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  • 1.
    Abraham, Kaleb
    et al.
    Örebro University, School of Science and Technology.
    Lust, Andreas
    Örebro University, School of Science and Technology.
    JÄMFÖRELSE AV KLIMATPÅVERKANFÖR GLASULL OCH POLYURETAN: MPARISON OF CLIMATE IMPACT FOR GLASS WOOL AND POYURETHANE2023Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This study examines the climate impact of the thermal insulation materials, glass wool and polyurethane. Two wall constructions with a size of one square meter are used in the study to compare their carbon footprints and determine which material has the lowest environmental impact. For the walls to be comparable, they need to have the same U-value. The study will be limited to only examining the materials from a cradle-to-gate perspective. Literature searches will be conducted for data collection. For the calculation of environmental impact, the study will examine Life Cycle Assessment (LCA), Environmental Product Declarations (EPDs), and the Boverket’s Climate Declaration.Environmental data for building materials is calculated using LCA, and from this, EPDs can be generated, which contain summarized environmental data. This study collects environmental data from EPDs Boverket’s Climate Database. U-values are calculated using the U- and λ-value method, and then the mean value is derived. Subsequently, the quantities of the materials are determined, and the walls' total Global Warming Potential (GWP) is calculated.According to the results of the study, walls with polyurethane and glass wool insulation show a significant difference in their carbon footprints. GWP calculations show that the wall with polyurethane insulation emits approximately 33 kg CO2e (carbon dioxide equivalents), while the wall with glass wool insulation emits around 17 kg CO2e. The results also indicate that the insulation layers alone exhibit a significant difference in carbon footprint, approximately 20 kg CO2e for polyurethane and 4.0 kg CO2e for glass wool. The significant difference may be attributed to the oil-based production of polyurethane. The study also found that the manufacturing stage contributes the most to the climate impact for both insulation materials.When selecting insulation materials, other material properties also need to be investigated, such as fire resistance, acoustic performance, and more. The economic aspect also plays a significant role in the selection process.From an environmental perspective, the conclusion indicates that glass wool insulation is the better choice.

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  • 2.
    Afram, Christian
    et al.
    Örebro University, School of Science and Technology.
    Demir, Kamil
    Örebro University, School of Science and Technology.
    UTVECKLINGEN AV EN JÄMSTÄLLD REKRYTERINGHur påverkar olika stora aktörer rekryteringen i byggbranschen: THE DEVELOPMENT OF AN EQUAL RECRUITMENTHow do different large actors affect recruitment in the construction industry2022Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The construction industry has been the least gender equal and most male-dominated in Sweden and it is important to analyze the problem and the underlying causes. Statistics show that 99 % of all craftsmen were men in 2020. The recruitment process plays an important role in the gender equality issue considering that it is where corporations show their position on both gender equality and how they work with the gender equality issues they face.  The purpose of this study is to investigate the gender equality challenges in recruitment and how major operators work with this process.  The method used is literature studies and qualitative studies. Interview studies have been key to answering our questions. We have six interviewed operators with different turnover. Respondents selected by the individuals who recruit construction related personnel to their corporation.  The results show that different large corporations with different turnovers decide how they implement gender equality in their recruitment companies in the construction industry. It has also shown a clear connection with the fact that the large corporations with the most turnover have a much better grasp of the gender equality issue and work with constant improvements and challenges, which also shows a clear structure in gender equality work within recruitment in the corporation 

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  • 3.
    Agélii Genlott, Annika
    et al.
    Örebro University, Örebro University School of Business.
    Grönlund, Åke
    Örebro University, Örebro University School of Business.
    Att lära sig läsa och skriva - i nutid och för framtid2014In: Interaktiva medier och lärandemiljöer / [ed] Elza Dunkels; Simon Lindgren, Malmö: Gleerups Utbildning AB, 2014, 1, p. 155-166Chapter in book (Refereed)
  • 4.
    Akbar, Avan
    Örebro University, School of Science and Technology.
    HÅLLBAR FÖRVALTNING AV KONSTRUKTIONSBYGGNADER.En studie av hur effektiv förvaltning kan bidra till hållbart samhällsbyggande2022Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    fficient structures and a systematic way of working are required to maintain and keep an aging infrastructure of construction buildings to meet the requirements of road safety and function. Regular inspections and the right priorities regarding the need for operation and maintenance are an important prerequisite for long-term sustainable management and community building. This thesis aims to contribute to increased knowledge about municipal management of various types of construction buildings. By answering the three questions “How are municipal construction buildings managed?”, “What are the challenges for municipal managers?” and “Which maintenance strategies create the best conditions for ensuring maximum technical service life and thus a socio-economically sustainable development?”, the aim is investigate different structures and working methods to promote sustainable management by making the right priorities when there is a need for operation and maintenance. The methods chosen to produce this report are literature studies, interviews, email contact and meetings with a few different people in the public sector. Most of the report´s content is based on literature studies. Other methods that have been applied complement the literature study. The results showed that the majority of all municipal management of various types of construction buildings take place through the management system BaTMan with registered inspections and damages as a starting point for large and costly operation and maintenance measures. For ongoing operation and maintenance, other systems and tools are used as a complement to BaTMan. 

    The results also showed that there are a number of challenges for municipal managers who often face a rapid expansion development with many new buildings and ever-increasing number of inhabitants. Today, lack of communication and information between various municipal departments and administrations is a major problem when it comes to the construction of new construction buildings and the consequences these have for the operation and maintenance activities. Through increased cooperation across administrative boundaries, great coordination opportunities can be created to build more sustainably. From a socio-economic perspective, different maintenance measures can lead to different amounts of traffic disruption that can lead to costs for society. It is cheaper for society if the proportion of risk-reducing repairs is increased to recuse the need for urgent repairs. In addition to reduced costs, this could also lead to minor traffic disruptions.  

    The conclusion of the work is that today's and tomorrow's society is dependent on a well-unctioning infrastructure. Through a systematic approach with the right priorities,commitment and interest in efficient management, major socio-economic effects can be achieved.

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  • 5.
    Ali Hussein, Maliun
    et al.
    Örebro University, School of Science and Technology.
    Marqus, Linda
    Örebro University, School of Science and Technology.
    EN MILJÖVÄNLIG OCH KOSTNADSEFFEKTIV AVFALLSHANTERING .- analys för utomhus avfallshantering.: AN ENVIRONMENTALLY FRIENDLY AND COST-EFFECTIVE WASTE MANAGEMENT - analysis for outdoor waste management.2022Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    On average, a person disposes of almost half a ton of waste per year. The more a country grows in population, the more its waste production grows. The largest proportion takes place in close proximity to the home and therefore alternative waste systems in a housing association have been examined and analyzed in this thesis. The purpose was to find a functioning waste system for older buildings where there is a lack of space for waste management. A case study was done at the tenant-owner association Haubitsen 2. The aim of the thesis was to find a new waste system for older buildings whose existing waste system consists of garbage dumps that end up in containers in the basement. Due to current rules regarding working environment and environmental requirements, such a waste system is no longer possible and a new solution is necessary. Through interviews, questionnaires and site visits, information contributed to the report has been obtained. Results of thesis show that vessel cabinets with separate vessels for residual waste and food waste, in connection with a street is a suitable solution. It meets future requirements for sorting food waste from residual waste and is at the same time cost-effective as there is only a one-off cost. The location is on a street where garbage trucks can drive in when collection takes place, which thus improves the work environment as the workload becomes less. 

  • 6.
    Andersson, Johanna
    et al.
    Agriculture and Food, RISE Research Institutes of Sweden AB, Gothenburg, Sweden.
    Garrido-Bañuelos, Gonzalo
    Agriculture and Food, RISE Research Institutes of Sweden AB, Gothenburg, Sweden.
    Bergdoll, Marion
    Agriculture and Food, RISE Research Institutes of Sweden AB, Gothenburg, Sweden.
    Vilaplana, Francisco
    Division of Glycoscience, Department of Chemistry, School of Engineering Sciences in Chemistry, KTH Royal Institute of Technology, AlbaNova University Centre, Stockholm, Sweden.
    Menzel, Carolin
    Division of Glycoscience, Department of Chemistry, School of Engineering Sciences in Chemistry, KTH Royal Institute of Technology, AlbaNova University Centre, Stockholm, Sweden.
    Mihnea, Mihaela
    Material and Product Design, RISE Research Institutes of Sweden AB, Gothenburg, Sweden.
    Lopez-Sanchez, Patricia
    Agriculture and Food, RISE Research Institutes of Sweden AB, Gothenburg, Sweden; Division of Food and Nutrition Science, Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden.
    Comparison of steaming and boiling of root vegetables for enhancing carbohydrate content and sensory profile2022In: Journal of Food Engineering, ISSN 0260-8774, E-ISSN 1873-5770, Vol. 312, article id 110754Article in journal (Refereed)
    Abstract [en]

    Root vegetables have unique techno-functional and nutritional properties however, their use in processed foods is limited to a few species, partially due to a lack of knowledge related to the impact of thermal treatments on the sensory properties. This study investigated the effect of steaming and boiling on the microstructure, mechanical properties, and sensory profile of three model root vegetables with distinct carbohydrate composition: Jerusalem artichoke (Helianthus tuberosus L.), parsnip (Pastinaca sativa), and beetroot (Beta vulgaris). Thermally treated Jerusalem artichoke and parsnip showed higher content of cell wall polysaccharides, particularly β-glucans (e.g. cellulose) and pectic components, compared to raw. Steaming produced more cell shrinkage and loss of cell-cell adhesion than boiling, leading to softer vegetables. Processed beetroot showed loss of cell turgor and drastic softening but not clear changes in overall carbohydrate content. The scores for several flavour and in-mouth attributes were higher for steamed vegetables compared to boiled. Our results give insights on the processability of root vegetables towards products with enhanced sensory and nutritional properties.

  • 7.
    Andersson, Oscar
    et al.
    Örebro University, School of Science and Technology.
    Stenberg, Johan
    Örebro University, School of Science and Technology.
    SLAGGBETONG OCH DESS HÅLLFASTHETUTVECKLING VID OLIKA HÄRDNINGSTEMPERATURER .2022Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The construction and infrastructure sector consists of a lot of concrete structures where carbon dioxide emissions are a known problem in the concrete industry. The binder cement makes up the largest part of the carbon dioxide emissions, hence research is being done on alternative materials to cement and one of those materials is slag. Using concrete with high replacement proportions of slag is something that is possible under conditions that research is conducted, to ensure good function according to requirements. The thesis intends to investigate the effect of temperature in the curing process. The degree project was made possible with the help of a literature study, dialogue with Oskar Linderoth at Swerock and via casting of concrete cubes with water curing in a laboratory environment. Strength development was tested at Örebro University with a hydraulic press. The concrete compositions that were cast had 40% and 60% slag mixture, respectively. The concrete cubes were hardened in a water bath at 20°C in an indoor climate and at 40°C in a heating cabinet. Finally, the respective concrete composition was tested for strenght after 3, 7 and 28 days. In total, curing and casting comprised 12 cubes. 

    The results show that a higher curing temperature results in a higher compressive strength between 3 and 28 days both at 40% and 60% slag mixture, respectively. In the concrete with 40% slag mixture, the higher curing temperature initially gives a higher strength, but the concrete with a lower curing temperature coincides with the higher one after 28 days. The concrete with 60% slag mixture has a more parallel strength development between the lower and higher curing temperature, respectively, after 3 and 28 days. As before, the higher curing temperature results in a higher strength than the lower curing temperature. Finally, the results indicate that a higher slag mixture generally results in a slightly lower initial strength early in the hardening process, but that it is around 28 days higher than the concrete with less slag with the help of a higher curing temperature. The conclusion is that Swerock's products show tendencies that varying curing temperature influences concrete with varying proportions of slag. However, more castings would be needed to obtain a safer result and a wider spread to ensure that similar results are achieved with more cubes. 

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  • 8. Arnroth, Thomas
    et al.
    Danielsson-Tham (Intervjuobjekt), Marie-Louise
    Örebro University, School of Hospitality, Culinary Arts & Meal Science.
    Därför bildas dammråttor2014In: Din Bostadsrätt, ISSN 1653-6258, no 2Article in journal (Other (popular science, discussion, etc.))
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  • 9.
    Arén, Björn
    Örebro University, School of Science and Technology.
    Dimensionering efter hållfasthet av olika slag2009In: Uppfinnaren & konstruktören, ISSN 0284-9682, no 5, p. 32-34Article in journal (Other (popular science, discussion, etc.))
  • 10.
    Ballester, Jordi
    et al.
    Université de Bourgogne, Centre des Sciences du Goût et de l’Alimentation, Dijon, France.
    Mihnea, Mihaela
    Université de Bourgogne, Centre des Sciences du Goût et de l’Alimentation, Dijon, France.
    Peyron, Dominique
    Université de Bourgogne, Centre des Sciences du Goût et de l’Alimentation, Dijon, France.
    Valentin, Dominique
    Université de Bourgogne, Centre des Sciences du Goût et de l’Alimentation, Dijon, France.
    Exploring minerality of Burgundy Chardonnay wines: A sensory approach with wine experts and trained panellists2013In: Australian journal of grape and wine research, ISSN 1322-7130, E-ISSN 1755-0238, Vol. 19, no 2, p. 140-152Article in journal (Refereed)
    Abstract [en]

    Background and Aims: The use of minerality as a wine descriptor has increased in the last few years. Minerality always suggests high quality and evokes a link between wine and the soil. The sensory meaning of minerality, however, is not yet clearly understood. The present study was designed to understand how wine experts conceptualise minerality and to explore whether they can judge wine minerality in a consensual way.

    Methods and Results: Experts carried out an orthonasal free sorting task on 16 Chardonnay wines. Afterwards, they rated their mineral character according to two conditions: orthonasally and on the palate while wearing a nose-clip. The experts also answered a questionnaire in which they defined minerality. A trained panel independently performed a sensory description of the samples. The wine experts showed strong disagreement in their minerality judgements under both conditions. Three groups of experts emerged for each condition. Each group considered as mineral wines with quite different sensory characteristics which prevents any generalisation concerning the sensory meaning of minerality. Surprisingly, definitions of minerality by the experts showed some commonality despite the use of idiosyncratic terms.

    Conclusions: Minerality is an ill-defined sensory concept, despite the apparent consistency emerging from verbal definitions by the experts.

    Significance of the Study: Minerality is nowadays a popular term in wine marketing. Some attempts to understand its chemical origin have been made; however, this study has shown that a sensory definition of minerality should first be developed.

  • 11.
    Ballester, Jordi
    et al.
    Centre des Sciences du Goût et de l’Alimentation, Dijon, France; IUVV Jules Guyot, Université de Bourgogne, Dijon, France.
    Mihnea, Mihaela
    Centre des Sciences du Goût et de l’Alimentation, Dijon, France.
    Peyron, Dominique
    Centre des Sciences du Goût et de l’Alimentation, Dijon, France; IUVV Jules Guyot, Université de Bourgogne, Dijon, France.
    Valentin, Dominique
    Centre des Sciences du Goût et de l’Alimentation, Dijon, France; AGROSUP Dijon, Dijon, France.
    Perceived minerality in wine: a sensory reality?2014In: Wine & Viticulture Journal, ISSN 1838-6547, Vol. 29, no 4, p. 30-33Article in journal (Refereed)
  • 12.
    Bengtsson, André
    et al.
    Örebro University, School of Science and Technology.
    Uppström, Ida
    Örebro University, School of Science and Technology.
    ÅTERANVÄNDNINGSPOTENTIALEN AV STOMME I STÅLHALL: THE POTENTIAL OF REUSING STEEL COMPONENT IN STEEL CONSTRUCTIONS2023Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The construction industry accounts for about 20% of society's total greenhouse gas emissions and steel production is one of the major climate villains. To achieve set climate goals and slow down global warming, all actors, large and small, must take responsibility. One way to reduce emissions from the steel is to reuse it as it avoids the demanding manufacturing process. In Sweden, interest in the racket sport of padel has increased in recent years and many padel companies therefore chose to build padel halls around the country. The halls are now for many in terms of the number of players and most padel companies are forced into bankruptcy.This development means that empty halls will be standing around the country.The purpose of this study is to investigate the reuse potential of the frame of an existing steel hall. Is it economically and environmentally justifiable to reuse an existing steel frame compared to producing a new one? The study is based on climate calculations and cost calculations for the reuse of existing frame and new production of identical frame. Climate calculations are carried out using two different methods, one based on Boverket’s generic climate database, and one based on product-specific climate data from environmental product declarations. Through requests for quotations and discussions with actors involved in the reuse and new production process, costs are obtained for reuse and new production of frame. This study shows that it is beneficial to reuse the existing frame from an environmental and an economic perspective. The economic comparison shows that it costs about 46% less to reuse the frame compared to producing it again and in this case, it corresponds to about SEK 528,000. The product-specific climate calculations are considered more realistic and are therefore valued higher than the climate calculations based on Boverket's generic climate database. The recycled frame generates 1015 kg of carbon dioxide equivalents and the newly produced generates 17 666 kg of carbon dioxide equivalents. The climate footprint of recycled frame corresponds to about 6% of newly produced.

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  • 13.
    Bhatt, Mehul
    et al.
    Örebro University, School of Science and Technology. University of Bremen, Bremen, Germany.
    Lewis, Clayton
    University of Colorado, Boulder, USA.
    Multimodality in Embodied Experience Design: Workshop at INTERACT 2017, Mumbai, INDIA2017In: Human-Computer Interaction – INTERACT 2017, Part IV, Springer, 2017, Vol. LNCS-10516, p. 533-534Conference paper (Refereed)
    Abstract [en]

    The workshop on Multimodality in Embodied Experience Design addresses the role of multimodality and mediated interaction for the analysis and design of human-centred, embodied, cognitive user experiences. Research topics being addressed encompass formal, computational, cognitive, design, engineering, empirical, and philosophical perspectives at the interface of artificial intelligence, cognitive science, and interaction design.

  • 14.
    Danielsson-Tham, Marie-Louise
    et al.
    Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala.
    Tham, WilhelmDepartment of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala.
    Proceedings of the symposium Food Associated Pathogens, May 6-8, 1996, Uppsala, Sweden1996Conference proceedings (editor) (Refereed)
  • 15.
    de Miranda, Luis
    et al.
    School of Literatures, Languages and Culture, The University of Edinburgh, UK.
    Ramamoorthy, Subramanian
    School of Informatics, The University of Edinburgh, UK.
    Rovatsos, Michael
    School of Informatics, The University of Edinburgh, UK.
    We, Anthrobot: Learning from Human Forms of Interaction and Esprit de Corps to Develop More Diverse Social Robotics2016In: WHAT SOCIAL ROBOTS CAN AND SHOULD DO, IOS Press, 2016, Vol. 290, p. 48-59Conference paper (Refereed)
    Abstract [en]

    We contend that our relationship with robots is too often seen within a universalistic and individualistic mind-frame. We propose a specific perspective in social robotics that we call anthrobotics. Anthrobotics starts with the choice to consider the human-machine intertwining as a dynamic union of more or less institutionalised collectives rather than separated discrete realities (individual humans, on one side, and discrete individualised machines on the other). We draw on our research in types of social interaction and esprit de corps to imagine more plural and harmonious forms of shared natural-artificial cognitive systems. We propose to look at four types of organised groups: conformative, autonomist, creative, and universalistic, that may provide guiding principles for the design of more diverse anthrobots.

  • 16.
    Dehghanian, Parmida
    et al.
    Örebro University, School of Science and Technology.
    Mardani Azari, Deniz
    Örebro University, School of Science and Technology.
    ASFALTENS FRAMTID UR ETT HÅLLBART PERSPEKTIV2022Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Asphalt is a material used to lay several different types of roads. It has been used in Sweden for more than 200 years. During these years, the work with asphalt has changed, ingredients have been replaced and manufacturing methods have been updated. In modern asphalt, bitumen is used as a binder. It is extracted from crude oil, which is a fossil substance that will not exist forever and also has a bad impact on the environment, therefore people have worked to find new ideas. This report will be about two methods of working for a more sustainable future. The construction and real estate company NCC works with asphalt recycling and the construction company Peab is researching if lignin can be used as a binder. The purpose of this report is to find out which of these methods leaves the least climate footprint. Asphalt is 100% recyclable, but to only use recycled asphalt in new production is not possible, as the quality does not measure up. Lignin is obtained from residual products from the forest industry, which means it is fossil-free. The work with lignin is currently at the research level, so it is not used as standard yet. In order to obtain a result, interviews with people who work at Peab and NCC have been conducted. These people have been able to answer our questions as they work on the topic. Recycling has been used for several decades, therefore the work has come significantly further than the work with lignin which has only been in progress since 2018. For this reason it is difficult to determine which method is most sustainable in the long run. What has been concluded is that when lignin is mixed with bitumen, the durability increases, hence the life-span. We have come to the conclusion that both companies think it is important with recycling, but also that they can see a future with a shortage of recycled asphalt. 

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  • 17.
    Demir, Hamdullah
    et al.
    Örebro University, School of Science and Technology.
    Ahmad, Ali
    Örebro University, School of Science and Technology.
    FÖRETAGENS ROLL INOM UTVECKLING AV BIM.- Betydelse av företagens storlek.2022Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The technology and digitization are constantly evolving today. This development means that many of today's construction companies need to adapt to the development by switching from working with various drawings in 2D format to working with coordinated models in 3D format. A relatively clear problem with this is that many of these construction companies are still lagging in the development of technology due to various factors. One solution to counteract this problem is to apply BIM in the business. However, studies have shown that the possibilities of influencing the development of BIM vary according to the resources of the enterprises in the form of working and economic conditions. The purpose of the study is to investigate and compare how the size of different companies varies the use of BIM in terms of their turnover and number of employees. Furthermore, the purpose is to study how companies contribute to the development of the industry within BIM and the opportunities that exist to develop BIM. The method used during the study is a literature and questionnaire studies. The literature study is used to collect and obtain knowledge about BIM and its development in the industry. The survey is conducted at six different companies to analyze and compare how the companies work with BIM in their operations. 

    The results show that the larger companies are generally at the forefront of the development of BIM. The larger companies apply BIM to a greater extent than the smaller companies that only apply BIM without any clear structure in the operations. The results also show a clear connection that the size of the companies has a significant role if the company can contribute to the development of BIM based on their existing turnover and number of employees. The conclusion is that the larger companies are further ahead in the development of BIM. The larger companies have more assets in the form of resources, more employees and a higher turnover in comparison to the smaller companies. This is also depending on that the smaller companies have less commitment to implementing BIM in their operations, which leads to smaller companies having limited opportunities to influence the work and development of BIM. 

  • 18.
    Eriksson, Emil
    et al.
    Örebro University, School of Science and Technology.
    Moberg, Mattias
    Örebro University, School of Science and Technology.
    UTREDNING OCH UTFORMNING AV BALKONG I KL-TRÄ .Som är fuktsäker och går att utföra praktiskt.2022Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    CLT is becoming a more popular building method. Therefore, the design documentation for CLT is not as developed as other frame systems. The solutions that exist today are only project-based and not always as well thought out as compared to how prefabricated concrete systems is designed. Some principles can be applied to CLT but since this is a different type of material the solutions need to become more specific to CLT.  The purpose with our study is to develop a standardized balcony detail in CLT which is moisture-proof and can be applied in practice. It must also meet the requirements and regulations for a balcony set by the authorities.  The report uses qualitative methods as a methodology to analyse the work that exist today for a balcony in CLT. We used literature studies and conducted 11 interviews with experts obtained from Kåver & Mellin. The study is limited to wall-mounted balconies attached with tension rods. The facade systems are limited to Rockwool´s RED air or PAROC zero. The detail in the report is only for apartment buildings and will meet the requirements set for a balcony. No calculations for load bearing capacity have been conducted where the solution is based on an existing solution. 

    As a result, from the literature studies and interviews, a balcony detail in CLT has been projected. The detail uses similar attachments as the detail the report is based on. The result from the methodology was that the steel frame that is applied around the CLT-panel must be replaced with a L shaped steel frame. The attachments for the tension rods must be placed on the sides of the balcony. Balconies in CLT must have the same triangle formed element as prefabricated concrete balconies has and be drawn all the way to the front edge of the CLT-panel. The balconies need to be made with duckboard which makes it easier to meet the requirements of accessibility and provides a more moisture-proof construction. The waterproof layer needs to be able to withstand the load bearing coming from duckboard. The boards closest to the threshold can be replaced with a floor grate. The balconies that is extra exposed to bad weather can have an extra outer wall construction. The conclusion is that a balcony in CLT need extensive measures for it to become as durable as concrete balconies. Material selection and the work performance have the biggest impact on the result. The study has resulted in a solid design documentation for a balcony in CLT and an alternative solution has been produced which is moisture-proof and can be applied in practice. 

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  • 19.
    Eriksson, Martin
    et al.
    Örebro University, School of Science and Technology.
    Ngea Chit, Pyo
    Örebro University, School of Science and Technology.
    LCC VÄRMESYSTEM X- En livscykelkostnadsstudie av fyra värmesystem utifrån småhus med varierande storlek, energibehov och geografisk placering.: LCC HEATING SYSTEM X- A life cycle cost study of four heating systems based on residential houses with varying size,energy requirements and geographical locations.2024Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    For homeowners, there are economic incentives to reduce the annual energy demand for heating and domestic hot water preparation, as these constitute the main part of the total annual energy demand for houses in Sweden. The choice of heating system is therefore important as it can have more or less favorable economic consequences over longer periods of time, as the amount of purchased energy required by the system can lead to savings that weigh against the economic investment in the system. The purpose of this study has therefore been to create a reference framework for four different heating systems, comparing them across houses of different sizes, geographical locations, and insulation standards, to identify the most economically beneficial heating systems over a 50-year period, that can be interpreted based on these parameters. The houses compared in the study were single-story houses with three assumed sizes: 89.7/120/150.3 m². They have been compared in Malmö, Stockholm, Sundsvall and Luleå, with each size having three different assumed average thermal transmittance values, average U-values. The study was conducted using energy calculations based on the degree-hour method, and the economic analysis was performed using calculated life cycle costs, LCC, for the different system configurations. Four heating systems were investigated: district heating, geothermal heat pump, air-to-water heat pump, and exhaust air heat pump. The exhaust air heat pump was incorporated as an MEVHR ventilation system, mechanical exhaust air ventilation with heat recovery, while the other three systems were combined with an HRVventilation system, mechanical exhaust and supply air ventilation with heat recovery. The results have shown that HRV systems, compared to MEVHR systems, reduce the annual heating energy demand, the amount of energy that must be supplied to the building, for all studied buildings in Malmö by 36-71%, while in Luleå it is reduced by 32-61%. The annual energy procurement, the amount of energy that must be purchased for the heating systems to generate the required heating energy and domestic hot water preparation, is consistently lowest for the geothermal heat pump system combined with the HRV. The system configuration with the highest proportion of purchased energy throughout the study is district heating combined with HRV. When comparing life cycle costs, LCC, it was found that district heating combined with HRVis the most economically beneficial system only when the annual demand for purchased energy is very low, and becomes the most expensive option at higher demands. The exhaust air heat pump is a cost-effective option in the majority of analyzed cases, thanks to lower investment costs that offset the higher heating energy demand induced by this type of ventilation. Geothermal heat pump combined with the HRV is the most expensive option in most cases when the annual demand for purchased energy is low but shows economic advantages at high energy demands. The air-to-water heat pump combined with the HRV is relatively similar to the geothermal heat pump but has not been shown to be the cheapest option in any of the studied cases. When comparing the exhaust air heat pump with the geothermal heat pump combined with the HRV, it is found that for all objects analyzed in the study, the largest price difference is, averaged over 50 years, less than 1,800 SEK/year. Based on the presented parameters, the feasibility of creating a reference framework for the cost-effectiveness of heating and ventilation systems in houses has been demonstrated, which can be assessed based on the house size, U-value, and geographical location.

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  • 20.
    Escher, Cecilia
    et al.
    CLINTEC-Department of Clinical Science Interventions and Technology, Karolinska Institutet, Stockholm, Sweden; CAMST-Center for Advanced Medical Simulation and Training, Karolinska University Hospital, Stockholm, Sweden.
    Rystedt, Hans
    Department of Education, Communication and Learning, University of Gothenburg, Gothenburg, Sweden.
    Creutzfeldt, Johan
    CLINTEC-Department of Clinical Science Interventions and Technology, Karolinska Institutet, Stockholm, Sweden; CAMST-Center for Advanced Medical Simulation and Training, Karolinska University Hospital, Stockholm, Sweden.
    Meurling, Lisbet
    CLINTEC-Department of Clinical Science Interventions and Technology, Karolinska Institutet, Stockholm, Sweden; CAMST-Center for Advanced Medical Simulation and Training, Karolinska University Hospital, Stockholm, Sweden.
    Nyström, Sofia
    Department of Behavior Sciences and Learning, Linköping University, Linköping, Sweden.
    Dahlberg, Johanna
    Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden.
    Edelbring, Samuel
    6Department of Medical and Health Sciences, Linköping University, Linköping, Sweden; Department of Learning, Informatics, Management and Ethics, Karolinska Institutet, Stockholm, Sweden.
    Nordahl Amorøe, Torben
    Simulator Centre West, Sahlgrenska University Hospital, Gothenburg, Sweden.
    Hult, Håkan
    CLINTEC-Department of Clinical Science Interventions and Technology, Karolinska Institutet, Stockholm, Sweden.
    Felländer-Tsai, Li
    CLINTEC-Department of Clinical Science Interventions and Technology, Karolinska Institutet, Stockholm, Sweden; CAMST-Center for Advanced Medical Simulation and Training, Karolinska University Hospital, Stockholm, Sweden.
    Abrandt Dahlgren, Madeleine
    Department of Medical and Health Sciences, Linköping University, Linköping, Sweden.
    Method matters: impact of in-scenario instruction on simulation-based teamwork training2017In: Advances in Science and Technology Research Journal, ISSN 2364-3277, E-ISSN 2059-0628, Vol. 2, article id 25Article in journal (Refereed)
    Abstract [en]

    Background: The rationale for introducing full-scale patient simulators in training to improve patient safety is to recreate clinical situations in a realistic setting. Although high-fidelity simulators mimic a wide range of human features, simulators differ from the body of a sick patient. The gap between the simulator and the human body implies a need for facilitators to provide information to help participants understand scenarios. The authors aimed at describing different methods that facilitators in our dataset used to provide such extra scenario information and how the different methods to convey information affected how scenarios played out.

    Methods:  A descriptive qualitative study was conducted to examine the variation of methods to deliver extra scenario information to participants. A multistage approach was employed. The authors selected film clips from a shared database of 31 scenarios from three participating simulation centers. A multidisciplinary research team performed a collaborative analysis of representative film clips focusing on the interplay between participants, facilitators, and the physical environment. After that, the entire material was revisited to further examine and elaborate the initial findings.

    Results: The material displayed four distinct methods for facilitators to convey information to participants in simulation-based teamwork training. The choice of method had impact on the participating teams regarding flow of work, pace, and team communication. Facilitators’ close access to the teams’ activities when present in the simulation suite, either embodied or disembodied in the simulation, facilitated the timing for providing information, which was critical for maintaining the flow of activities in the scenario. The mediation of information by a loudspeaker or an earpiece from the adjacent operator room could be disturbing for team communication.

    Conclusions:  In-scenario instruction is an essential component of simulation-based teamwork training that has been largely overlooked in previous research. The ways in which facilitators convey information about the simulated patient have the potential to shape the simulation activities and thereby serve different learning goals. Although immediate timing to maintain an adequate pace is necessary for professionals to engage in training of medical emergencies, novices may gain from a slower tempo to train complex clinical team tasks systematically.

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    Method matters: impact of in-scenario instruction on simulation-based teamwork training
  • 21.
    Flyktman, Stefan
    et al.
    Örebro University, School of Science and Technology.
    Johansson, Jan
    Örebro University, School of Science and Technology.
    Tillverkningsmetoders påverkan på en transmissions vikt och tillverkningskostnad2010Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Volvo Powertrain, VPT, in Köping currently manufactures transmissions for heavy-duty vehicles. For medium-duty vehicles Volvo purchase transmissions from their parts supplier ZF. Volvo wants to investigate the scenario to develop AMT - gearboxes for medium-duty vehicles. The I-shift model AT2412, which is designed for a maximum load of 2400 Nm and adapted for heavy-duty vehicles, would be able to function even in the medium-duty vehicles, but would be oversized and excessively heavy.

    In view of future development Volvo need to increase their knowledge in how the choices of manufacturing methods affect the mass and the manufacturing costs. They need to increase the understanding to make the optimal priorities with respect to mass and manufacturing costs. This study aimed to provide this understanding of how different processes affect a transmission design with respect to mass and measures from a given torque range. The aim of the study was to demonstrate the influence of the choice of production methods for individual items and how much it can affect the complete transmission's mass and manufacturing cost. The work was limited to analyzing the modified gears in the base unit.

    The first part of the work consisted of designing new gears designed for a maximum load of 1600 Nm, based on the same list of operations as the existing gears, which are found in AT2412. The second part consisted of revealing the factors for the different processes affecting the design regarding to fatigue and structural strength. For eight combinations of manufacturing processes the mass and manufacturing cost was calculated for each gear. Finally, a summary was made to show which combination of manufacturing methods that would give the optimum transmission based on minimum mass and minimum manufacturing cost.

    The results show that the choice of production methods leads to more or less reduction of mass of the gears. Generally, the calculations show that the gear that is ground, shootpeened and manganese phosphated get the lowest mass and become the most expensive to produce. On the other hand, lower manufacturing cost can be achieved by excluding certain manufacturing operations as shootpeening and manganese phosphate, but this must be compensated by increased facewidth of the gear, leading to increased mass.

    If VPT decide to develop a new variant of the I-shift in which the gears are designed for 1600Nm then the gearbox can be 6-11 kg lighter and the manufacturing costs of the gears can be reduced by about 10 percent.

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    FULLTEXT01
  • 22.
    Freudendal, Simon
    et al.
    Örebro University, School of Science and Technology.
    Fransson, Jakob
    Örebro University, School of Science and Technology.
    KOLDIOXIDUPPTAG I KROSSAD BETONG: - Kvantifiera samt effektivisera karbonatiseringsprocessen2023Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Strangbetong crushes discarded hollow core slabs, which are used for filling materials in new castings. The crushed concrete is stored in a pile outside before it is used. The first material was crushed during 2020 and the latest material were crushed in the winter of 2022. The concrete carbonates, a process where the concrete absorbs carbon dioxide from the air. The point of this project is to quantify the carbon dioxide which is absorbed and find solutions to make the carbonation more efficient. 

    To understand how concrete carbonation works, information has been searched for by studying already existing research reports. As there is a lack of information about carbonation of crushed concrete assumptions have been made to move the project forward. Which means that the calculations need more specific data to show a more reasonable result. 

    The crushed concrete was analyzed with a carbonation indicator to see how far the material had carbonated, depending on how long the material had been untouched. 

    Theoretic calculations were made throughout two different exposures, rain and covered from rain and different exposure time, the carbon dioxide uptake increases if the pile is covered from rain. Structured picking of material around the pile results in a longer exposure time for the material, therefore a higher uptake of carbon dioxide compared to how the material is picked today where the material is picked from the same side all the time. 

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  • 23.
    Frid, Emma
    et al.
    KTH Royal Institute of Technology, Stockholm, Sweden.
    Moll, Jonas
    Uppsala University, Uppsala, Sweden.
    Bresin, Roberto
    KTH Royal Institute of Technology, Stockholm, Sweden.
    Sallnäs Pysander, Eva-Lotta
    KTH Royal Institute of Technology, Stockholm, Sweden.
    Haptic feedback combined with movement sonification using a friction sound improves task performance in a virtual throwing task2019In: Journal on Multimodal User Interfaces, ISSN 1783-7677, E-ISSN 1783-8738, Vol. 13, no 4, p. 279-290Article in journal (Refereed)
    Abstract [en]

    In this paper we present a study on the effects of auditory- and haptic feedback in a virtual throwing task performed with a point-based haptic device. The main research objective was to investigate if and how task performance and perceived intuitiveness is affected when interactive sonification and/or haptic feedback is used to provide real-time feedback about a movement performed in a 3D virtual environment. Emphasis was put on task solving efficiency and subjective accounts of participants’ experiences of the multimodal interaction in different conditions. The experiment used a within-subjects design in which the participants solved the same task in different conditions: visual-only, visuohaptic, audiovisual and audiovisuohaptic. Two different sound models were implemented and compared. Significantly lower error rates were obtained in the audiovisuohaptic condition involving movement sonification based on a physical model of friction, compared to the visual-only condition. Moreover, a significant increase in perceived intuitiveness was observed for most conditions involving haptic and/or auditory feedback, compared to the visual-only condition. The main finding of this study is that multimodal feedback can not only improve perceived intuitiveness of an interface but that certain combinations of haptic feedback and movement sonification can also contribute with performance-enhancing properties. This highlights the importance of carefully designing feedback combinations for interactive applications.

  • 24.
    Gonzáles-Sanjosé, Luisa
    et al.
    Departamento de Biotecnología y Ciencias de ls Alimentación, Universidad de Burgos, España.
    Mihnea, Mihaela
    Departamento de Biotecnología y Ciencias de ls Alimentación, Universidad de Burgos, España.
    Ortega-Heras, Miriam
    Departamento de Biotecnología y Ciencias de ls Alimentación, Universidad de Burgos, España.
    Pérez-Magariño, Silvia
    ITACYL, Instituto Tecnológico Agrario de Castilla y León, España.
    Efecto de diversas técnicas de Maceración pre-fermentativas sobre los compuestos volátiles mayoritaros de vinos blancos de Albarín2013Conference paper (Other academic)
  • 25.
    Gustavsson, Jennifer
    et al.
    Örebro University, School of Science and Technology.
    Nolåkers, Emma
    Örebro University, School of Science and Technology.
    HÅLLBAR STADSPLANERING. Örebro kommuns strategier för minskad klimatpåverkan2022Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    One fifth of Sweden's climate impact comes from the building and construction sector, and in 2017 the Parliament voted that Sweden, by 2045 at the latest, will achieve net zero emissions of greenhouse gases. Örebro municipality has produced its own governing document, Climate strategy for Örebro municipality, which describes the climate impact, what the municipality needs to do and what milestones and stage goals are in the geographical area. The purpose of this study is to investigate how Örebro municipality works actively to reduce climate impact through community planning in connection with the city's growth. The study has been based on literature studies and interviews with four participants from Örebro municipality and three participants from the County Administrative Board in Örebro County. The study has been limited to a specific stage goal in Örebro municipality's climate strategy and the ways in which they work to achieve the stage goal - climate-smart community planning. The results indicate that Örebro municipality has many documents to relate to in order to reduce the climate impact. One of these documents is the master plan. This document is considered to be the main tool for community planning, as other planning documents have been worked into the master plan. The traffic strategy is one of these planning documents that forms the basis for promoting sustainable travel. 

    The County Administrative Board has the task of providing the municipalities with different planning documents and arranging different meetings with the municipalities. In community planning, there are many aspects to take into account and then the County Administrative Board can set good examples, disseminate knowledge and provide guidance to the municipalities. The municipality of Örebro has produced its own tool to be able to streamline and influence the land allocation process known as the Örebro model. The municipality has the power to decide who will be allocated land by evaluating the construction actors' implementation ambitions in the expressions of interest. In addition, the municipality may want the construction actors’ implementation ambitions to be climate-related. To enable climate work in the municipality even more, the conclusion is that a change in laws and clearer positions in politics are needed. If policy is to be able to take a stand, it is required that civil servants have the competence and the opportunity to convey what measures are needed. 

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  • 26.
    Gustavsson, Jenny
    et al.
    Örebro University, School of Science and Technology.
    Högstedt, Oscar
    Örebro University, School of Science and Technology.
    INOMHUSKLIMATETS OLIKA FAKTORERS PÅVERKAN PÅ MÄNNISKANS VÄLBEFINNANDE: - En jämförelse mellan två förskolors inomhusklimat2024Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    People today spend more than 90% of their time indoors, making the indoor climate an important and significant part of their health and well-being, especially for younger people. The purpose of this report is to investigate and compare the indoor climate of two preschools in Hallsbergs Municipality, Äppellunden and Kompassen, with the following questions: - How is the indoor climate of Preschool Kompassen perceived in relation to measurements of the indoor climate? - How is the indoor climate of Preschool Äppellunden perceived in relation to measurements of the indoor climate? - How do the perceived indoor climate and measurements of indoor climate compare between the two preschools regarding operative temperature, air quality, air velocity and humidity? The study was conducted over a limited period and only examined the rooms in the preschool where the children are continuously present. The study does not consider factors such as noise, light, and smell. The indoor climate was studied through a survey sent to all educators at the two preschools and complemented by independent measurements of air quality and temperature. The two preschools are fundamentally very different Äppellunden is a newly built preschool from 2019, while Kompassen is an industrial building from 1981 that was converted to a preschool in 2014. Indoor climate is influenced by many different factors that all need to work together. This includes ventilation, whose main function is to remove polluted air and bring in fresh air. The indoor climate should also have a comfortable temperature, with requirements based on the operative temperature. The indoor air should not be too humid or too dry indoors, and people should not feel drafts. For all factors, there are requirements or guidelines that should be followed to establish a good indoor climate. Projects like BETSI and the ELIB survey have previously conducted nationwide studies on indoor climate. To investigate how the indoor climate is perceived at the preschools, a survey about the indoor climate was sent to the educators. In the same preschools, measurements of mean radiant temperature, air temperature, relative humidity, and carbon dioxide levels were taken, and the operative temperature calculated. This was done in one room per department and at four points in each room. Overall, the measurements showed that the preschools have a good indoor climate; however, they both have dry indoor air. Previous studies have shown that dry air often becomes a larger problem in big buildings. This was a study on multi-family houses, but some parallels to the preschools can still be drawn. From the survey, it was found that the educators mainly had problems with a varying room temperature at Äppellunden. This may be due to Äppellunden having a ventilation system with varying air flow. Kompassen mainly suffered from dry air, varying room temperature, and a feeling of stale air. All measurements performed met the requirements and recommendations from authorities, except for one measurement at Kompassen.

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    INOMHUSKLIMATETS OLIKA FAKTORERS PÅVERKAN PÅ MÄNNISKANS VÄLBEFINNANDE
  • 27.
    Haglund, Felix
    et al.
    Örebro University, School of Science and Technology.
    Bojestig, Isak
    Örebro University, School of Science and Technology.
    PÅVERKAN AV SILIKATBASERAD MEMBRANHÄRDARE PÅ BETONG: Vad gäller uttorkning och hållfasthet2024Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Concrete is one of the most common building materials in the world, consisting of cement, aggregate, water and optional additives. Despite its widespread use, problem often arise. To counteract these issues, concrete is treated in various ways, such as moist curing after casting, as insufficient moisture during hydration can halt strength development. The aim of this study is to investigate how moist curing with a water-based membrane hardener containing silicate affects dehydration and strength for concrete with low water-tocement ratio (w/c). The study compares complete moist curing with plastic, moist curing with membrane hardener and uncured concrete. The membrane hardener used is a water- based membrane hardener with silicate, and the concrete used has a water-to-cement ratio of 0,38 and a strength class of C45/55. The development of strength in concrete begins as soon as cement is mixed with water, and this chemical reaction is called hydration. During hydration, belite (C2S) and alite (C3S) in the cement react with water and form, among other things, calcium silicate hydrate (C-S-H), which is the component that gives concrete its strength. Factors that affect the strength development of concrete include moisture availability, temperature, type of cement, and water-cement ratio. Immediately after casting, concrete contains large amounts of moisture, both as free water and in the form of water vapor, which needs to dry out. The drying of concrete takes a long time and continues until it reaches moisture equilibrium with the surrounding environment. The drying rate depends on various factors such as water-cement ratio and additives, and the method of moisture curing can also affect the drying time. To address the objective, concrete cubes were cast and cured using either a membrane curing compound or by being wrapped in plastic, while some cubes were air-cured. Moisture meters were placed in some of the concrete cubes to measure relative humidity. The remaining test cubes were subjected to compression testing to determine their compressive strength. The results indicate that the membrane hardener leads to slower drying compared to uncured concrete cubes, but shorter drying times compared to plastic sheet curing. Regarding strength, the results shows that that cubes treated with membrane hardener exhibit higher average compressive strength than uncured cubes but lower average compressive strength then the cubes moisture cured with plastic. The discussion addresses the results and potential sources of error, and other things that can affect the result. The significant deviation in strength for uncured cubes compared to those subjected to moist curing greatly impacts the average compressive strength. The conclusion suggests trends indicating longer drying times compared to uncured concrete cubes, moisture curing with plastic curing demonstrating longer drying times than membrane hardening with the specific membrane hardener used. Regarding strength, no clear correlation is observed between strength and membrane hardener, indicating the need for further testing with more specimens for reliable results.

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    PÅVERKAN AV SILIKATBASERAD MEMBRANHÄRDARE PÅ BETONG
  • 28.
    Hajder, Arnes
    et al.
    Örebro University, School of Science and Technology.
    Loyola, Rodrigo
    Örebro University, School of Science and Technology.
    Mätning av akustiska parametrar i olika lokaler2009Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this report is to find out how an acoustic measurement is done. The measurement results are used to see if the facility meets the requirements of the different parameters for the tenant's use. The parameters are reverberation, clarity grade for speech and music. To make such a measurement requires both theoretical and practical knowledge in acoustics and technology.

    We read a lot of literature on the topic acoustics and how to conduct an acoustic measurement. We made a number of measurements in different rooms at the school premises we chose to measure in the concert hall and studio. We measured reverberation time, clarity grade for speech and music. After the measurements were carried out, we got the results we expected to get. Because these facilities are built of high quality and meets the requirements of ISO source [11].

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  • 29.
    Heinonen, M.
    et al.
    VTT Technical Research Centre of Finland, Centre for Metrology MIKES, Espoo, Finland.
    Bell, S.
    National Physical Laboratory, Teddington, UK.
    Il Choi, B.
    Korea Research Institute of Standards and Science, Daejeon, Republic of Korea.
    Cortellessa, G.
    Università degli Studi di Cassino e del Lazio Meridionale, Cassino, Italy.
    Fernicola, V.
    Istituto Nazionale di Ricerca Metrologica, Turin, Italy.
    Georgin, E.
    Centre Technique des Industries Aérauliques et Thermiques, Lyon, France.
    Hudoklin, D.
    Faculty of Electrical Engineering, University of Ljubljana, Ljubljana, Slovenia.
    Ionescu, G. V.
    National Institute of Metrology, Bucharest, Romania.
    Ismail, N.
    National Institute of Standard, Giza, Egypt.
    Keawprasert, T.
    National Institute of Metrology, Pathumthani, Thailand .
    Krasheninina, M.
    Ural Research Institute for Metrology, Yekaterinburg, Russia.
    Aro, R.
    University of Tartu, Tartu, Estonia.
    Nielsen, J.
    Danish Technological Institute, Aarhus, Denmark.
    Oğuz Aytekin, S.
    TÜBİTAK Ulusal Metroloji Enstitüsü, Kocaeli, Turkey.
    Österberg, P.
    University of Oulu, Kajaani, Finland; Measurepolis Development Ltd, Kajaani, Finland.
    Skabar, J.
    Instituto Nacional de Tecnologia Industrial, Buenos Aires, Argentina.
    Strnad, R.
    Czech Metrology Institute, Brno, Czech Republic.
    New Primary Standards for Establishing SI Traceability for Moisture Measurements in Solid Materials2018In: International journal of thermophysics, ISSN 0195-928X, E-ISSN 1572-9567, Vol. 39, article id 20Article in journal (Refereed)
    Abstract [en]

    A European research project METefnet addresses a fundamental obstacle to improving energy-intensive drying process control: due to ambiguous reference analysis methods and insufficient methods for estimating uncertainty in moisture measurements, the achievable accuracy in the past was limited and measurement uncertainties were largely unknown. This paper reports the developments in METefnet that provide a sound basis for the SI traceability: four new primary standards for realizing the water mass fraction were set up, analyzed and compared to each other. The operation of these standards is based on combining sample weighing with different water vapor detection techniques: cold trap, chilled mirror, electrolytic and coulometric Karl Fischer titration. The results show that an equivalence of 0.2 % has been achieved between the water mass fraction realizations and that the developed methods are applicable to a wide range of materials.

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    New Primary Standards for Establishing SI Traceability for Moisture Measurements in Solid Materials
  • 30.
    Hellman, Anna
    et al.
    Örebro University, School of Science and Technology.
    Säfström, Hanna
    Örebro University, School of Science and Technology.
    BIM SOM VERKTYGFör digitalisering inom installationssamordning: BIM AS A TOOLFor digitization in MEP coordination2023Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The digitalization in the society is increasing and it is crucial for societal development, and it is therefore included in the UN Agenda 2030 and the EU's Digital Compass. The Swedish National Board of Housing, Building and Planning has been commissioned by the Swedishgovernment to develop a digital environment for the Planning and Building Act (PBL). Most of the digital services are developed and available on the National Board's website, but hard copies are still required according to the law.Building Information Modeling (BIM) has become increasingly common in Sweden, but since there are no national requirements or standards for BIM, it is up to each company to implement the working method according to their own abilities. As buildings become more complex, the number and complexity of installations required within these structures hasincreased. Despite the growing adoption of BIM, the number of issues related to installations has remained stagnant or even increased during the past decade.The aim of this report is to investigate whether digitization through BIM can simplify the Mechanical, Electrical, and Plumbing (MEP) coordination in construction projects, as well as the challenges that may arise during the implementation and utilization of BIM.Survey studies and observations have been conducted at the consulting company calledKAMTech in Örebro, Sweden, to investigate the MEP coordinator's work and their use of BIM. Literature studies have been conducted to investigate prior research within the field and to explore the potential for digitization in MEP coordination through the implementation of BIM.The survey results show that clear communication, shared planning, and requirements are essential for successful MEP coordination. According to the responders, the use of BIM in projects offers a sense of clarity and improved project overview. They also express that early clash detections have a positive impact of the project’s result. Survey results and observations also indicate that there are challenges to keep the model updated to the latest version in theprojects.Currently, BIM is primarily utilized by MEP coordinators to conduct clash detections. The MEP coordinators believe that having capability to establish protocols for coordinated checks, accompanied by hyperlinks to drawings and descriptions, would facilitate their work.The conclusion is that digitization through BIM can simplify the MEP coordination in construction projects by gathering all data in one place to organize and create clarity. The utilization of BIM can enhance efficiency and productivity in projects through its ability to provide a visual overview of the entire project. However, the implementation of BIM can be challenging due to the lack of legislated requirements and standards in Sweden.

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  • 31.
    Jarl, Magnus
    et al.
    Örebro University, Department of Technology.
    Axelsson, Fredrik
    Wear of dies, measured and calculated by the process control system in a drawing machine2009In: Wire Journal International, ISSN 0277-4275, Vol. 42, no 10, p. 80-83Article in journal (Refereed)
  • 32.
    Karlsson, Anton
    et al.
    Örebro University, School of Science and Technology.
    Ivarsson, Casper
    Örebro University, School of Science and Technology.
    ENERGIEFFEKTIVISERING AV ELEMENTFASADER MED INTEGRERADE SOLCELLER.2022Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    With today's demands to build in a more energy efficient and sustainable manner, there is a great need to build with a low U-value to reduce energy needs, and to try to make the building self-sufficient to the best extent possible with the help of solar cells. The purpose of the investigation is to create a lot with integrated solar cells and a lower U-value than a standard element facade that is being built today, which in this investigation is compared to a facade from Bas Barkarby in Järfälla. However, daylight requirements must still be met for the facade to be able to build it in practice.  The facade is developed using the software SchüCal, which also provides data for U-value. This new facade is drawn in Schüco's system AF UDC 80. The program Calumen was used to report data for the window glass. The energy simulations for the facade were performed through the IDA ICE based program ESBO where the building was placed in Västerås and performed as a typical office room. The estimate of how much energy the solar cells produce was determined through the EU's PVGIS program. The U-value of the developed facade was 0,254 W/m2K which is lower than Barkarby's 0,522 W/m2K, with the help of an extra internal insulation layer of 70 mm. The integrated solar cells produce 430.6 kWh per year and facade direction. This results in a need to buy 133 kWh per year when using the new facade, which is lower than Barkarby's need of 733 kWh per year. 

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  • 33.
    Karmi, Rahmatullah
    et al.
    Örebro University, School of Science and Technology.
    Gaorieh, Gaby
    Örebro University, School of Science and Technology.
    Undersökning av kostnadsöverskridande byggprojekt: Investigation of cost overruns in construction projects - Factors that result in increased costs beyond the expected budget2023Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

     

    Cost overrun is a common problem in the construction industry and can have a negative impact on the scope of a project. This problem is based on several factors. The purpose of this study has been to investigate the main causes of cost overrun in construction projects and to identify the best possible measures for addressing these causes.

     

    To achieve this purpose, we conducted an extensive literature review and examined previous research on the subject. We also collected data from survey studies involving various stakeholders from different companies. This data was gathered through a survey that the companies responded to.

     

    The results confirm that cost overruns are a problem in the construction industry, and they demonstrate that there are many different causes that contribute to exceeding costs. The major causes include inaccurate project estimation and uncertainties and unforeseen events occurring in the world that prevent the project from being completed within the planned budget.

     

    The measures that have emerged from the results include, among others, the need for competent organizations to take action and have realistic estimates. Additionally, well-thought-out project management should be implemented in a timely manner.

  • 34.
    Kondyli, Vasiliki
    et al.
    Örebro University, School of Science and Technology.
    Bhatt, Mehul
    Örebro University, School of Science and Technology.
    Cognitive Modelling of Visuospatial Complexity in the Streetscape2021In: Proceedings of the 8th International Conference on Spatial Cognition: Cognition and Action in a Plurality of Spaces (ICSC 2021) / [ed] Thomas Hünefeldt; Marta Olivetti Belardinelli, Springer , 2021, Vol. 22, no Suppl. 1, p. 44-44, article id Suppl. 1Conference paper (Refereed)
    Abstract [en]

    Background: Incorporating knowledge about human behaviour and the effect of the environment is a major goal for the design and engineering of human-centred autonomous vehicles. Systems that aim to establish a common interaction ground with humans require systematic modelling of empirically established behavioural norms customised to specific contexts.

    Aims: Focusing on aspects pertaining to visual attention in driving, we develop a cognitive model of visuospatial complexity for naturalistic driving scenes and explore its effect on visual attention tasks (e.g., involving visual search) during everyday driving.

    Methods: By analyzing dynamic naturalistic scenes, we define a scale of visuospatial complexity based on a taxonomy of quantitative, structural, and dynamic attributes. We re-create real-world instances in virtual reality (VR) in four levels of visuospatial complexity. The human-centred basis of the model lies in its behavioural evaluation with human subjects with respect to psychophysical measures (e.g. eye-tracking) pertaining to embodied visuospatial attention.

    Results: Empirical results show the levels of visuospatial complexity of the scene correlate with visual search performance parameters, however different categories of attributes contribute differently to the overall effect. We report work-in-progress on the development of a (sample) dataset with the central emphasis on the evaluation of the visuospatial complexity levels on driving stimuli within VR.

    Conclusion: The presented cognitive model of visuospatial complexity in everyday driving situations can be used as a basis to design, and evaluate visuospatial sensemaking capabilities of autonomous vehicles. We posit that our methodology encapsulates key cognitive principles founded on empirically established behavioural patterns under naturalistic conditions.

  • 35.
    Kondyli, Vasiliki
    et al.
    Örebro University, School of Science and Technology.
    Bhatt, Mehul
    Örebro University, School of Science and Technology.
    Multimodality on the Road: Towards Evidence-Based Cognitive Modelling of Everyday Roadside Human Interactions2020In: Advances in Transdisciplinary Engineering / [ed] Lars Hanson, Dan Högberg, Erik Brolin, IOS Press , 2020, Vol. 11, p. 131-142Conference paper (Refereed)
    Abstract [en]

    We propose an evidence based methodology for the systematic analysis and cognitive characterisation of multimodal interactions in naturalistic roadside situations such as driving, crossing a street etc. Founded on basic human modalities of embodied interaction, the proposed methodology utilises three key characteristics crucial to roadside situations, namely: explicit and implicit mode of interaction, formal and informal means of signalling, and levels of context-specific (visual) attention. Driven by the fine-grained interpretation and modelling of human behaviour in naturalistic settings, we present an application of the proposed model with examples from a work-in-progress dataset consisting of baseline multimodal interaction scenarios and variations built therefrom with a particular emphasis on joint attention and diversity of modalities employed. Our research aims to open up an interdisciplinary frontier for the human-centred design and evaluation of artificial cognitive technologies (e.g., autonomous vehicles, robotics) where embodied (multimodal) human interaction and normative compliance are of central significance.

    Download full text (pdf)
    Multimodality on the Road: Towards Evidence-Based Cognitive Modelling of Everyday Roadside Human Interactions
  • 36.
    Kristoffersson, Annica
    et al.
    Örebro University, School of Science and Technology.
    Coradeschi, Silvia
    Örebro University, School of Science and Technology.
    Loutfi, Amy
    Örebro University, School of Science and Technology.
    A review of mobile robotic telepresence2013In: Advances in Human-Computer Interaction, ISSN 1687-5893, E-ISSN 1687-5907, Vol. 2013, p. 902316-Article, review/survey (Refereed)
    Abstract [en]

    Mobile Robotic Telepresence (MRP) systems incorporate video conferencing equipment onto mobile robot devices which can be steered from remote locations. These systems, which are primarily used in the context of promoting social interaction between people, are becoming increasingly popular within certain application domains such as health care environments, independent living for the elderly and office environments. In this review, an overview of the various systems, application areas and challenges found in literature concerning mobile robotic telepresence is provided. The survey also proposes a set terminology for the field as there is currently a lack of standard terms for the different concepts related to MRP systems. Further, this review provides an outlook on the various research directions for developing and enhancing mobile robotic telepresence systems per se, as well as evaluating the interaction in laboratory and field settings. Finally, the survey outlines a number of design implications for the future of mobile robotic telepresence systems for social interaction.

    Download full text (pdf)
    fulltext
  • 37.
    Kruszewski, Tomasz
    et al.
    Örebro University, School of Science and Technology.
    Olsson, Anna
    Örebro University, School of Science and Technology.
    VÄRMEGENOMGÅNGSTALETS UTVECKLING: Progress of the heat transfer coefficient2023Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    By 1947, k-value, was the standard value and Sweden was divided into different zones with local building regulations. Since then, the progress of the building legislation has been moving forward. The law has changed, and many new regulations and instructions have been published during the years. There are no longer any zones or local regulations. Today, the current concepts are U-value and EPpet. This report includes a compilation of allowed values for k-value and how it has been developing since 1947 until today. The purpose of the report is to create a simplified compilation of how k-value has been developing historically regarding building legislation. An overview of the numbers of small houses and apartment buildings are also included. Compilations of this type of values are an important part in the preparatory work to Fit for 55 and are also valuable for upcoming environmental work. The literature study has been done from the regulations BABS, SBN, NR and BBR. The statistics of the numbers of homes has been collected from the SCB. The work covers building regulations from BABS 46 until BBR 29 and only includes the building parts floor, wall, and roof. The compilation of the development of k-value is limited to residences.The outcome/result is reported in charts and graphs. The compilation gave a clearer picture of how k-value has developed and where the biggest changes occurred. The purpose was to compile a simplified version of the k-values development throughout history, a purpose which was achieved.

    Download full text (pdf)
    fulltext
  • 38.
    Lopez Valladares, Gloria
    Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland.
    Human listeriosis: Grouping of human Listeria monocytogenes isolates with PFGE and AscI restriction enzyme2019Doctoral thesis, comprehensive summary (Other academic)
    List of papers
    1. Division of Human Listeria monocytogenes Pulsed-Field Gel Electrophoresis (PFGE) Types Belonging to Lineage I (Serovar 4b, 1/2b, and 3b) into PFGE Groups
    Open this publication in new window or tab >>Division of Human Listeria monocytogenes Pulsed-Field Gel Electrophoresis (PFGE) Types Belonging to Lineage I (Serovar 4b, 1/2b, and 3b) into PFGE Groups
    2015 (English)In: Foodborne pathogens and disease, ISSN 1535-3141, E-ISSN 1556-7125, Vol. 12, no 5, p. 447-453Article in journal (Refereed) Published
    Abstract [en]

    The 63 pulsed-field gel electrophoresis (PFGE) types identified among 427 clinical isolates of Listeria monocytogenes that were characterized in a previous study by serotyping and PFGE (AscI) could be further divided into 17 PFGE groups. While the 63 PFGE types, all part of lineage I, were established based on the number and distribution of all bands in each DNA profile, the 17 PFGE groups were based on the configuration of small bands with sizes L. monocytogenes serovar 4b isolates (n=334) were divided into 8 PFGE groups; the 32 PFGE types of serovar 1/2b isolates (n=90) and the serovar 3b isolates (n=3, 1 PFGE type) were divided into 9 PFGE groups. An association was observed between PFGE groups and serovars. L. monocytogenes isolates belonging to PFGE groups I, J, Q, R, X, Z, o-4, and o-5 all shared serovar 4b, whereas isolates from PFGE groups D, G, O, P, T, U, o-1, o-2, and o-3 shared serovar 1/2b. Small fragments L. monocytogenes isolates. From the results of the present study, a procedure for accelerating the identification of PFGE types when analyzing new PFGE profiles can be suggested. Therefore, we propose a stepwise procedure to PFGE profiling by first identifying the PFGE group using the smaller band patterns <145.5 kb, and then determining PFGE types based on the band patterns >145.5 kb.

    Place, publisher, year, edition, pages
    Mary Ann Liebert, 2015
    National Category
    Other Social Sciences not elsewhere specified
    Research subject
    Culinary Arts and Meal Science
    Identifiers
    urn:nbn:se:oru:diva-44674 (URN)10.1089/fpd.2014.1880 (DOI)000353777800010 ()25803595 (PubMedID)2-s2.0-84929458142 (Scopus ID)
    Note

    Funding Agency:

    Stiftelsen Grythytte Akademi Stipendiefond

    Available from: 2015-05-22 Created: 2015-05-22 Last updated: 2023-12-08Bibliographically approved
    2. Lineage II (Serovar 1/2a and 1/2c) Human Listeria monocytogenes Pulsed-Field Gel Electrophoresis Types Divided into PFGE Groups Using the Band Patterns Below 145.5 kb
    Open this publication in new window or tab >>Lineage II (Serovar 1/2a and 1/2c) Human Listeria monocytogenes Pulsed-Field Gel Electrophoresis Types Divided into PFGE Groups Using the Band Patterns Below 145.5 kb
    2017 (English)In: Foodborne pathogens and disease, ISSN 1535-3141, E-ISSN 1556-7125, Vol. 14, no 1, p. 8-16Article in journal (Refereed) Published
    Abstract [en]

    Among 504 clinical lineage II isolates of Listeria monocytogenes isolated during 1958-2010 in Sweden, 119 pulsed-field gel electrophoresis (PFGE) types (AscI) have been identified based on the number and distribution of all banding patterns in each DNA profile. In this study, these types were further divided into PFGE groups based on the configuration of small bands with sizes <145.5 kb. The 504 isolates included 483 serovar 1/2a isolates distributed into 114 PFGE types and 21 serovar 1/2c isolates distributed into 9 PFGE types; these were further divided into 21 PFGE groups. PFGE group, that is, configuration of small bands below 145.5 kb, and serovars were correlated. L. monocytogenes isolates belonging to PFGE groups A, B, C, E, F, H, K, L, M, S, V, W, Y, and Ö-6 to Ö-12 shared serovar 1/2a, with one exception. PFGE group E also included two PFGE types sharing serovar 1/2c and four PFGE types belonging to either serovar 1/2a or 1/2c. Isolates belonging to PFGE group N shared serovar 1/2c. In contrast to lineage I isolates, small fragments <33.3 kb were visible in all L. monocytogenes isolates belonging to lineage II. In the results from both the present and previous studies, the genomic region of small bands was genetically more conservative than in large bands. The distribution of these small bands established the relatedness of strains and defined a genetic marker for both lineages I and II, while also establishing their serogroup. The division of L. monocytogenes PFGE types into PFGE groups is advantageous as the profile of every new isolate can be identified easily and quickly through first studying the PFGE group affiliation of the isolate based on the smaller band patterns <145.5 kb, and then identifying the PFGE type based on the band patterns >145.5 kb.

    Place, publisher, year, edition, pages
    New Rochelle, USA: Mary Ann Liebert, 2017
    Keywords
    PFGE type, PFGE group, Listeria monocytogenes, serovar, lineage II
    National Category
    Genetics Food Science
    Identifiers
    urn:nbn:se:oru:diva-53597 (URN)10.1089/fpd.2016.2173 (DOI)000391818800002 ()27860487 (PubMedID)2-s2.0-85009260194 (Scopus ID)
    Note

    Funding Agency:

    Stiftelsen Grythytte Akademi Stipendiefond

    Available from: 2016-11-21 Created: 2016-11-21 Last updated: 2020-01-28Bibliographically approved
    3. Human isolates of Listeria monocytogenes in Sweden during half a century (1958-2010)
    Open this publication in new window or tab >>Human isolates of Listeria monocytogenes in Sweden during half a century (1958-2010)
    Show others...
    2014 (English)In: Epidemiology and Infection, ISSN 0950-2688, E-ISSN 1469-4409, Vol. 142, p. 2251-2260Article in journal (Refereed) Published
    Abstract [en]

    Isolates of Listeria monocytogenes (n=932) isolated in Sweden during 1958–2010 from human patients with invasive listeriosis were characterized by serotyping and pulsed-field gel electrophoresis (PFGE) (AscI). Of the 932 isolates, 183 different PFGE types were identified, of which 83 were each represented by only one isolate. In all, 483 serovar 1/2a isolates were distributed over 114 PFGE types; 90 serovar 1/2b isolates gave 32 PFGE types; 21 serovar 1/2c isolates gave nine PFGE types; three serovar 3b isolates gave one PFGE type; and, 335 serovar 4b isolates gave 31 PFGE types. During the 1980s in Sweden, several serovar 4b cases were associated with the consumption of European raw soft cheese. However, as cheese-production hygiene has improved, the number of 4b cases has decreased. Since 1996, serovar 1/2a has been the dominant L. monocytogenes serovar in human listeriosis in Sweden. Therefore, based on current serovars and PFGE types, an association between human cases of listeriosis and the consumption of vacuum-packed gravad and cold-smoked salmon is suggested.

    Keywords
    Cheese, Listeria monocytogenes, PFGE, serotyping, salmon
    National Category
    Occupational Health and Environmental Health
    Research subject
    Culinary Arts and Meal Science
    Identifiers
    urn:nbn:se:oru:diva-40067 (URN)10.1017/S0950268813003385 (DOI)000344921000003 ()24480252 (PubMedID)2-s2.0-84909991349 (Scopus ID)
    Note

    Funding Agency:

    Research Foundation of Ivar and Elsa Sandberg 

    Available from: 2014-12-30 Created: 2014-12-30 Last updated: 2020-01-28Bibliographically approved
    4. Gravad (Gravlax) and cold-smoked salmon, still a potential source of listeriosis
    Open this publication in new window or tab >>Gravad (Gravlax) and cold-smoked salmon, still a potential source of listeriosis
    Show others...
    2009 (English)In: Journal of Foodservice, ISSN 1748-0140, Vol. 20, no 1, p. 15-20Article in journal (Refereed) Published
    Abstract [en]

    Gravad (Gravlax) and cold-smoked salmon are associated with human listeriosis in Sweden. The present investigation of Listeria monocytogenes in salmon was a follow-up of a similar study in the middle of the 1990s. Since our first study, there has been an increasing focus on food hygiene in general and specially on self-inspection and Hazard Analysis and Critical Control Points from the authorities and food producers. L. monocytogenes was isolated from 11 (three manufacturers) of the 56 products analyzed. The highest level of L. monocytogenes was 1500 cfu/g from a cold-smoked salmon product; however, the level was low (<100 cfu/g) in most products. Serovar 1/2a was predominant, followed by 4b. restriction enzyme analysis/ pulsed-field gel electrophoresis typing of the 56 salmon isolates identified five types of L. monocytogenes. One type was identical to a human type, whereas two other were closely related. These findings suggest that gravad and coldsmoked salmon are still possible sources of listeriosis in Sweden.

    Place, publisher, year, edition, pages
    Oxford: Blackwell Publishing, 2009
    National Category
    Medical and Health Sciences
    Research subject
    Culinary Arts and Meal Science; Biomedicine
    Identifiers
    urn:nbn:se:oru:diva-2999 (URN)10.1111/j.1748-0159.2008.00118.x (DOI)
    Available from: 2008-09-05 Created: 2008-09-05 Last updated: 2020-01-28Bibliographically approved
    5. More than one variant of Listeria monocytogenes isolated from each of two human cases of invasive listeriosis
    Open this publication in new window or tab >>More than one variant of Listeria monocytogenes isolated from each of two human cases of invasive listeriosis
    Show others...
    2007 (English)In: Epidemiology and Infection, ISSN 0950-2688, E-ISSN 1469-4409, Vol. 135, no 5, p. 854-856Article in journal (Refereed) Published
    Abstract [en]

    Two variants of Listeria monocytogenes were isolated from blood cultures from each of two patients with listeriosis. Each variant displayed a two-band difference in DNA profile from the other by pulsed-field gel electrophoresis. Although this difference in profile is insufficient to distinguish clearly between the variants, the possibility of co-infection with different strains of L. monocytogenes needs to be considered. We suggest that more than one colony should be selected for molecular typing to aid interpretation during investigation of the sources and routes of Listeria infection.

    National Category
    Nutrition and Dietetics Other Medical Sciences not elsewhere specified
    Research subject
    Culinary Arts and Meal Science; Household Science
    Identifiers
    urn:nbn:se:oru:diva-6162 (URN)10.1017/S0950268806007503 (DOI)000248778300018 ()17109771 (PubMedID)
    Available from: 2009-03-30 Created: 2009-03-30 Last updated: 2022-11-25Bibliographically approved
    Download full text (pdf)
    HUMAN LISTERIOSIS – GROUPING OF HUMAN LISTERIA MONOCYTOGENES ISOLATES WITH PFGE AND ASCI RESTRICTION ENZYME
  • 39.
    Lunden, Tobias
    et al.
    Örebro University, School of Science and Technology.
    Widlund, Oskar
    Örebro University, School of Science and Technology.
    Vägprojektering. Vägprojektet KarlsdalsvägenIndependent thesis Basic level (university diploma), 5 credits / 7,5 HE creditsStudent thesis
    Abstract [sv]

    Sammanfattning

    Troligtvis känner de flesta till problemen med Rudbecksgatan i centrala Örebro. Vägen är hårt

    belastad av trafik, både person- och godstrafik. Den tunga trafiken skapar buller,

    miljöproblem och långa köer. Varför leds trafiken igenom centrala staden?

    I Kommunens översiktsplan punkt 10.5.8 omläggning av Riksväg 51, finns tre alternativ på

    att leda trafiken från Riksväg 51 Norrköpingsvägen över till E20.

    Ett av alternativen intresserade oss mer än de andra. Det var alternativ 3; Riksväg 51 leds in

    över Ladugårdsängen, genom Aspholmen och ut på Västerleden. Detta alternativ berör även

    en annan flaskhals som påverkar många dagligen. Flaskhalsen omfattar korsningen mellan

    järnvägen och Gustavsviksvägen/Gamla vägen i Örebro.

    Vi har i detta arbete tagit fram förslagsritningar för alternativet samt gjort en

    miljökonsekvensbeskrivning och bullerberäkning. För att kunna säkerställa arbetet så har vi

    varit ute på plats och gjort en kontroll med GPS.

    Resultat blev en genomfartsled med gång- och cykelväg, 50km/h, 8 meter bred och 1450

    meter lång. Av den miljökonsekvensbeskrivning vi gjorde behövs inga större åtgärder

    genomföras.

    Det fanns två fastigheter i riskzonen för att påverkas av buller men resultatet av

    bullerberäkningen visar att våra värden ligger under Naturvårdsverkets riktvärden.

  • 40.
    Längkvist, Martin
    et al.
    Örebro University, School of Science and Technology.
    Loutfi, Amy
    Örebro University, School of Science and Technology.
    Learning feature representations with a cost-relevant sparse autoencoder2015In: International Journal of Neural Systems, ISSN 0129-0657, E-ISSN 1793-6462, Vol. 25, no 1, p. 1450034-Article in journal (Refereed)
    Abstract [en]

    There is an increasing interest in the machine learning community to automatically learn feature representations directly from the (unlabeled) data instead of using hand-designed features. The autoencoder is one method that can be used for this purpose. However, for data sets with a high degree of noise, a large amount of the representational capacity in the autoencoder is used to minimize the reconstruction error for these noisy inputs. This paper proposes a method that improves the feature learning process by focusing on the task relevant information in the data. This selective attention is achieved by weighting the reconstruction error and reducing the influence of noisy inputs during the learning process. The proposed model is trained on a number of publicly available image data sets and the test error rate is compared to a standard sparse autoencoder and other methods, such as the denoising autoencoder and contractive autoencoder.

  • 41.
    Lööw, Sebastian
    et al.
    Örebro University, School of Science and Technology.
    Björndahl Konjhodzic, Simon
    Örebro University, School of Science and Technology.
    FRAMGÅNGSFAKTORER FÖR ETT EFFEKTIVT BYGGPROJEKT.Faktorer från bygg- och anläggningssektorn ställt mot projekt i elkraft.2022Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    There is currently a difference in efficiency between the construction industry and the rest of the manufacturing industry, where the construction industry lags. This report aims to find key factors for conducting an effective construction project. An effective project has in this report been defined as a project that meets the schedule, budget and achieves good quality. Through literature studies and interviews with employees at the company Evolent AB, several success factors were identified, which in one way or another contributed to a more efficient project. These success factors could improve the construction industry's efficiency and more specifically for Evolent AB. From the study presented, it was clear that the most important success factor for being able to conduct an effective construction project was the planning basis. According to both the interviews and the literature studies, a well-developed planning basis with a schedule is crucial to being able to conduct a successful project. It affects all aspects of what has been identified as efficiency during this report. Reducing waste was also a success factor with the potential to streamline a project and increase profits in general, but also specifically for Evolent AB. Knowledge feedback is also a strong key factor for running a successful project. In conclusion, the following points answer the purpose of the study: 

    •    Detailed planning documentation, preferably with extra time in case of risk of theft or unforeseen events.•    

    Clear sub-goals that the project revolves around. These must keep to the schedule.•  

     Invest in the schedule and keep it alive throughout the project.•  

     Reduce waste during production. Not only the use of resources but also faults and controls, health and safety, and systems and structures.•    Knowledge feedback:

    -    Use previous inspection protocols at start-up meetings of similar projects.-    ERFA meetings, address the points which worked well and less well.-    The same person who has been involved in previous projects should also be involved in the next project if its similar.

  • 42.
    Mihnea, Mihaela
    et al.
    Department of Food Science and Biotechnology, Faculty of Science, University of Burgos, Burgos, Spain.
    González-Sanjosé, M L
    Department of Food Science and Biotechnology, Faculty of Science, University of Burgos, Burgos, Spain.
    Ortega-Heras, M
    Department of Food Science and Biotechnology, Faculty of Science, University of Burgos, Burgos, Spain.
    Pérez-Magariño, S
    Instituto Tecnológico Agrario de Castilla y León, Consejería de Agricultura y Ganadería, Ctra Burgo.
    A comparative study of the volatile content of Mencía wines obtained using different pre-fermentative maceration techniques2015In: Lebensmittel-Wissenschaft + Technologie, ISSN 0023-6438, E-ISSN 1096-1127, Vol. 64, no 1, p. 32-41Article in journal (Refereed)
    Abstract [en]

    The effects of five pre-fermentative maceration processes (enzymes, refrigerated maceration during 3 and 6 days and cryo-maceration during 3 and 6 days) on volatile composition of Mencía red wines were studied. This study was carried out during three consecutive vintages, and semi-industrial scale effect was also assayed during third one.

    Cluster analysis revealed that the different pre-fermentative maceration techniques tested led to wines with different volatile composition. Forward stepwise discriminate analysis selected 22 volatiles, mainly corresponding to fermentative compounds showing that the effects of pre-fermentative maceration techniques are mainly related to effects on fermentative aroma precursors. Generally, macerated Mencía wines were richer on alcohols and ethyl vanillate, but poorer on some of the ethyl esters under study. However, the effects of the techniques are quantitatively and qualitatively different, allowing the possibility of obtaining wines specifically adapted to the consumers' taste or wines personalised according to the enologists' preferences. 

  • 43.
    Mihnea, Mihaela
    et al.
    Department of Food Science and Biotechnology, Faculty of Science, University of Burgos, Burgos, Spain.
    González-Sanjosé, M. L.
    Department of Food Science and Biotechnology, Faculty of Science, University of Burgos, Burgos, Spain.
    Ortega-Heras, M
    Estación Enológica, Instituto Tecnológico Agrario, Rueda, Spain.
    Pérez-Magariño, S
    Estación Enológica, Instituto Tecnológico Agrario, Rueda, Spain.
    García-Martin, N
    Grupo de Superficies y Materiales Porosos, Faculty of Science, University of Valladolid, Valladolid, Spain.
    Palacio, L
    Grupo de Superficies y Materiales Porosos, Faculty of Science, University of Valladolid, Valladolid, Spain.
    Prádanos, P
    Grupo de Superficies y Materiales Porosos, Faculty of Science, University of Valladolid, Valladolid, Spain.
    Hernández, A
    Grupo de Superficies y Materiales Porosos, Faculty of Science, University of Valladolid, Valladolid, Spain.
    Impact of must sugar reduction by membrane applications on volatile composition of Verdejo wines2012In: Journal of Agricultural and Food Chemistry, ISSN 0021-8561, E-ISSN 1520-5118, Vol. 60, no 28, p. 7050-7063Article in journal (Refereed)
    Abstract [en]

    Climate changes are inducing increased sugar levels of must, which produces negative effects on wine quality, as unbalanced wines with high degrees of alcohol. So, effective strategies to control the increase of sugar levels in must have been studied. One of them is the use of a membrane process, and this is applied in this work. The sugar level of white must from Verdejo (Vitis vinifera variety) was reduced using diverse membrane processes, and the effect of this fact on the volatile composition of the corresponding wines is studied. The study was carried out during three consecutive vintages. An important impact of the reduction of sugar levels of must on the volatile composition of the obtained wines was detected, which was due to some retention phenomena of aromatic and precursor compounds. To minimize the volatile composition modifications, an appropriate selection of the nanofiltration membrane must be done. 

  • 44.
    Mihnea, Mihaela
    et al.
    Department of Food Science and Biotechnology, Faculty of Science, University of Burgos, Burgos, Spain; Department of Viticulture and Enology, Stellenbosch University, Stellenbosch, South Africa.
    González-Sanjosé, María Luisa
    Department of Food Science and Biotechnology, Faculty of Science, University of Burgos, Burgos, Spain.
    Velasco-López, María Teresa
    Department of Food Science and Biotechnology, Faculty of Science, University of Burgos, Burgos, Spain.
    Rivero-Pérez, María Dolores
    Department of Food Science and Biotechnology, Faculty of Science, University of Burgos, Burgos, Spain.
    Ortega-Heras, Miriam
    Department of Food Science and Biotechnology, Faculty of Science, University of Burgos, Burgos, Spain.
    Pérez-Magariño, Silvia
    Instituto Tecnológico Agrario de Castilla y León, Consejería de Agricultura y Ganadería, Valladolid, Spain.
    Effect of Pre-Fermentative Strategieson the Composition of Prieto Picudo (Vitis vinífera) Red Wines2016In: OALib Journal, ISSN 2333-9705, Vol. 3, article id e3197Article in journal (Refereed)
    Abstract [en]

    The actual wine global market presents the risk of standardization of the wines and the losses of wine grape peculiarities. To combat this fact, autochthonous wine grapes are extremely interesting to use for winemaking. The use of the pre-fermentative maceration technique in autochthonous grape varieties could be an alternative of increasing their complexity. The aim of the present work was to compare the effect of five different pre-fermentative maceration treatments on the colour, phenolic and volatile composition of Prieto Picudo (PP) autochthonous red wines. The evolution during 12 months of the different wines was also studied for one vintage. Enzymatic, refrigerate and cryo-maceration treatments were applied to PP autochthonous grape varieties. The study was carried out during two consecutive vintages. Results showed that enzymatic maceration was the most effective treatment to improve levels of phenols, colour intensity and volatile compounds. Cold maceration showed also good effects. However, it was not able to improve the extractive effects of enzymatic macerations. Generally, wines obtained with pre-fermentative maceration techniques showed better colour and volatile stability than control wines.

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  • 45.
    Olofsson, Oscae
    et al.
    Örebro University, School of Science and Technology.
    Culafic, Andjela
    Örebro University, School of Science and Technology.
    COVID-PANDEMINS PÅVERKAN PÅ BYGGBRANSCHEN2022Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The Covid-19 pandemic is something that has been relevant for a while and that has affected most people in one way or another. For this reason, the link between the construction industry and the pandemic is interesting to investigate. The purpose of this study is to investigate how the Covid-19 pandemic has affected construction companies in Örebro County. If the companies experienced any difficulties during the pandemic and how they dealt with them. To be able to carry out the study, a qualitative research study was used in the form of interviews. The method was used to allow companies to express their own experiences of the pandemic. The companies interviewed were Byggföretagen, OBK Sverige, Tida Byggpartner and NA Bygg. Furthermore, literature studies were also used to be able to achieve the purpose of the study. 

    The results of the study show that all companies have been affected in some way by the pandemic. The companies expressed that the social aspect has suffered due to the pandemic. When the government introduced restrictions, companies could no longer have staff parties, training on-site, physical meetings, or lunch together. There have been consequences, as a result a company noticed that loyalty in the company has decreased. The aspect that has had the greatest impact from the pandemic is the material. During this time there has been a noticeable lack of material. This has led to all companies that were interviewed at some point during the pandemic having to rethink and change the material or come up with some other solution. The lack of materials has also led to a substantial price increase, which has created uncertainty in the industry. 

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  • 46.
    Olstorpe, Matilda
    et al.
    Department of Microbiology, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Borling, Jenny
    Department of Microbiology, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Schnürer, Johan
    Department of Microbiology, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden.
    Passoth, Volkmar
    Department of Microbiology, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Pichia anomala yeast improves feed hygiene during storage of moist crimped barley grain under Swedish farm conditions2010In: Animal Feed Science and Technology, ISSN 0377-8401, E-ISSN 1873-2216, Vol. 156, no 1-2, p. 47-56Article in journal (Refereed)
    Abstract [en]

    Preservation of moist crimped cereal grain is made feasible through fermentation by lactic acid bacteria. Climatic variations make it difficult to harvest at moisture contents (0.30-0.45 g/g) to Support Optimal fermentation under practical conditions. Therefore, the yeast, Pichia anomala J121, previously found to prevent mould spoilage and improve preservation of moist grain in malfunctioning airtight silos, was added to moist crimped cereal grain stored in large plastic tubes. Freshly harvested barley grain was crimped and inoculated with P. anomala (10(5) colony-forming units/g grain). Due to the local weather conditions, harvest was delayed and moisture content in the cereal grain had decreased to 0.16-0.18 g/g. P. anomala was inoculated into three batches of barley, each comprising 16 tonnes packed into large plastic tubes. Three additional sets of plastic tubes were packed with cereal grain without addition of P. anomala. The grain tubes were left closed for 5 months, after which feeding to cattle commenced. In both the P. anomala inoculated and the control barley, the population diversity of lactic acid bacteria (LAB) was very high over the duration Of Storage. However, the dominant LAB shifted over the course of storage to Pediococcus pentosaceus and Lactobacillus paracasei, in inoculated and control barley, respectively. The yeast Population in the inoculated barley was totally dominated by P. anomala during the entire storage period. In the control grain, the yeast population was more diverse, displaying shifts in the dominant species during storage. Pichia burtonii was the dominant species at the last sampling occasion. In P. anomala inoculated barley, numbers of naturally Occurring Moulds were reduced by about two log units. and the number of Enterobacteriaceae was reduced to below detection.

  • 47.
    Olstorpe, Matilda
    et al.
    Department of Microbiology, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Schnürer, Johan
    Department of Microbiology, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden.
    Passoth, Volkmar
    Department of Microbiology, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Microbial changes during storage of moist crimped cereal barley grain under Swedish farm conditions2010In: Animal Feed Science and Technology, ISSN 0377-8401, E-ISSN 1873-2216, Vol. 156, no 1-2, p. 37-46Article in journal (Refereed)
    Abstract [en]

    This Study investigated feed hygiene during airtight storage of non-dried barley grain under farm conditions. Microorganisms on the grain were sampled and quantified in seven Swedish firms throughout the storage period using culture dependent methods. The dominant lactic acid bacteria (LAB) and yeasts were identified by rRNA gene sequencing and moulds by morphological characterisation. Moisture content (MC) and pH of the grain were also monitored. It was difficult to obtain the optimal MC(0.30-0.45 g/g) that is necessary to initiate fermentation in the grain. Feed hygiene was maintained during storage of cereals when MC below 0.17 g/g. Intermediate MC (0.17-0.23 g/g) of the grains was conducive to mould growth, including growth of potential producers of mycotoxins, which can diminish feed safety and nutritional value. Enterobacteriaceae were found in all barleys, even at low MC, but their numbers were substantially decreased when the number of LAB was high. True fermentation of moist crimped cereal grains was only obtained on one farm with all initial barley MC of 0.3 g/g. Here, LAB reached high numbers during storage, whereas numbers of spoilage microorganisms that may reduce feed hygiene decreased considerably. However, the pH of the barley did not differ among farms. Storage stability in airtight stored barley may thus be the result of low oxygen tension, viz. airtight storage, and competition for nutrients by the microorganisms, rather than formation of lactic acid. At harvest, Enterococcus caccae dominated the LAB Population in five barleys and Lactobacillus fermentum at the remaining two. The dominant yeast species were Aureobasidium pullulans, Cryptococcus wieringae, Kazachstania aerobia and Rhodotorula glutinis. After storage, L fermentum was dominant among the LAB. The yeast species composition was highly diverse and differed among barleys. Among others, C. wieringae, Debaryomyces hansenii, K. aerobia, R. glutinis and Sporobolomyces ruberrimus were detected. This Study shows that the microbial population in airtight stored moist barley is highly diverse and not predictable. Thus, it may be necessary to influence the microbial population in the storage system by adding a starter culture.

  • 48. Patmalnieks, Ann
    et al.
    Danielsson-Tham (Intervjuobjekt), Marie-Louise
    Örebro University, School of Hospitality, Culinary Arts & Meal Science.
    Hallå där, Marie-Louise Danielsson-Tham2014In: Hotellrevyn, ISSN 1654-7683, Vol. 25 juniArticle in journal (Other (popular science, discussion, etc.))
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  • 49.
    Persson, Hanna
    et al.
    Örebro University, School of Science and Technology.
    Enevad, Linnéa
    Örebro University, School of Science and Technology.
    ROBOTAR I BYGGBRANSCHEN,Är Jaiboten lösningen på byggbranschens arbetsmiljöproblem?2022Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The construction industry is one of the industries with the most occupational accidents and injuries. Overload injuries, uncomfortable working positions and heavy lifting are commonplace for many professional workers in the construction industry. Because of this many professionals state that they will not be able to work until retirement due to difficulties with their work. Other work environment loads that can cause injuries and problems in both long and short terms are loud noises, dust and vibration damage. There are aids and personal protective equipment to prevent injuries and problems that occur at a construction site, but according to statistics from the Swedish Work Environment Authority, the work environment has not improved in the last 20 years. Therefore more needs to be done.  The purpose of the report is to investigate whether the drilling robot Jaibot is a possible solution to the construction industries work environment problem during the production phase. The study aims to open up the possibility of an improved work environment and to increase interest in the use of innovations.  The methodology used to achieve the purpose includes conducting interviews and literature studies. The interview method used is semi-structured and has been performed at Skanska’s NVM project. The respondents have different roles in the project and they all have experience with the drilling robot Jaibot in the project in Malmö. The method includes literature studies containing previous studies on the subject, books and the Swedish Work Environment Authority’s regulations and statistics. 

    The working environment loads addressed in the study are dust, vibration, noise and load ergonomics.  The robot Jaibot is a semi-automatic drilling robot from Hilti. The robot drills holes between 6 mm and 16 mm in the ceiling.  All interviewees think that the Jaibot has a positive effect on the work environment, as it takes in to account several major work environment problems. The Jaibot eliminates the risk of vibration damage and reduces the risk of dust, load damage and noise. The respondents have many suggestions for improvement to the robot. Several interviewees mention core drilling as an important part of the robot’s development. All interviewees are positive that the Jaibot is the future way of working. However, efficiency, the working environment and the economy must be favored by the robot in order for its use to continue.  The conclusion is that the robot Jaibot is a possible solution to the construction industry’s work environment problems during the construction phase.  

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  • 50.
    Pettersson, Anna
    et al.
    Örebro University, School of Science and Technology.
    Dolmaya, Milad
    Örebro University, School of Science and Technology.
    HUR PÅVERKAS MILJÖN NÄR ICKE FÖRNYBARA BYGGMATERIAL ERSÄTTS MED FÖRNYBARA? - GÖR DET NÅGON SKILLNAD?2022Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    According to Boverket - The Swedish National Board of Housing, Building and Planning, 21 percent of greenhouse emissions are caused by the Swedish building industry. To make a change the building industry should focus more on sustainable building. The main cause of greenhouse emissions within the construction sector is caused by extracting the raw materials, transport, and manufacturing of material. To build sustainably, nonrenewable materials can be changed to renewable materials to reduce greenhouse emissions. An example is to change plastic with windproof board. Wood is a good example of a renewable material.  In this study, the house Astrid, which is a turnkey house from Älvsbyhus, was analysed. The house Astrid has a living area of 107 m2 including three rooms and a kitchen. The purpose is to get a wooden house which is equivalent to the house Astrid when it comes to energy performance, but with a lower greenhouse emission by changing nonrenewable material to wood products. The method used was to firstly inventory the house Astrid and to be able to see which materials that could be changed. Through research and gathering information, alternative material and other relevant facts were found. Then the average heat transfer coefficient - Um was calculated. Where Um for both houses must be equal to be able perform the materials change without affecting the construction. Afterwards, an Environmental Product Declaration- EPD were used to see the different products' environmental impact. 

    The results showed that the Um became the same which means that the energy performance is equal both houses. The renewable materials contributed to reducing the greenhouse emission of the new house. The conclusion shows that the studied materials’ environmental impact for the house Astrid decreased with up to 41 percent. 

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