Change search
Refine search result
12 1 - 50 of 59
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • harvard-cite-them-right
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 1.
    Abrahamsson, Daniel
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Petersson, Oscar
    University of Borås, Faculty of Textiles, Engineering and Business.
    Anbud: Faktorer och förbättringsmöjligheter i anbudsprocessen2017Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The report shows how extensive the tender process is and what factors to consider in order tosubmit a winning bid. It highlights the different parts of the tender process and makes adeeper analysis of some of the most important factors. Bidding is not just about value whatsomething will cost. Because companies rarely are alone, they are finding ways and solutionsthat make the offer competitive. There is a high pace in the construction industry andconstruction companies currently have a lot to do.The report is written together with RO-Gruppen and a survey is the basis for the analysis. Thegoal was to describe RO-Gruppens work and to find possible improvement potential.As specifications, customers and procurement variations vary, it’s difficult to always followthe same template. Transparency and flexibility is required to analyze what exactly the clientis looking for. Experience proved to be a decisive factor, both according to the literature andthe questionnaire survey.

    Download full text (pdf)
    Anbud
  • 2.
    Akram, Hoger
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Kasem, Kani
    University of Borås, Faculty of Textiles, Engineering and Business.
    En jämförande studie mellan platsgjuten betongvägg och skalvägg: Kostnad och tid för respektive byggmetod2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The thesis is a comparison between two different construction methods: half shell precast walls and site cast concrete walls. The study has been made for SEFA Betongentreprenad AB who is aiming for the most profitable construction method.The important aspects, which are emphasized in this thesis are costs, time and working environment.The result shows that a building with half shell precast walls is causing increased material cost in the project which also leads to a higher prime cost for the concrete contractor. On the contrary it will require shorter time schedule compared to working with the site concrete wall which the main contractor benefits from, because less time equals decreased overhead cost and management cost. In addition half shell precast walls provides a better working environment compared to site cat concrete walls because less work activities are required at the worksite which also leads to a reduction of accidents.Time and cost is based on unit-time from Nybyggnadslistan 1999 and the price inquiry. To compile the prime cost and time for the total work a careful calculation has been performed in various computer programs so like Bluebem, Wikells and Excel. The survey is based on documentation of a project which includes both a school and student dormitory in Lund.

    Download full text (pdf)
    fulltext
  • 3.
    Al Sadi, Sarmad
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Hododi, Dylan
    University of Borås, Faculty of Textiles, Engineering and Business.
    Digitalisering av byggsektorn2018Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: The digital progress is slow within the constructional sector in comparison to other type of businesses and it has the reputation of being relatively conservative. To say that the progress is standing still would be mistake since the majority of constructional companies are working actively for a more digital construction site. Even though these companies are working hard towards a more digital sector the construction site is dominated by paper documents, non-autonomic systems and the labor is done the same way as it has been done for decades. Even though multiple digital tools and implementation models are available the construction sector is facing a lot of resistance. This report examines those digital innovations that are on the rampaging and can do a significant good within the construction sector.

    Method: Through search engines at the university's database, as well as the internet, collection of raw data was collected, which would then be analyzed and underlie for qualitative collection methods. The literature study was the foundation of the semistructured interviews, which in turn enabled a comparison between the theoretical framework and interview results.

    Findings: A vast majority of the interviewed participants believe that the 3D-printer sometime in the future may be used within the construction sector. An implementation of the 3D-printer would induce shorter production times, reduced production costs, elimination of waste and reduced costs for labor. Autonomic systems will probably not be implemented on construction sites within a short future since different construction projects are to diverse. If the construction would become more monotonic it would ease considerably, but today one project is rarely analogous to the other. Big data is an innovation that could revolutionize the construction sector in a lot of different ways. The respondents did not understand the meaning of the term, which interpret that it is not an innovation in focus for the time being. The possibilities of Big data are substantial and it could be used for more effective communication, more efficiency within the construction site, more detailed checkups of machinery and more controlled building material checkups.

    Implications: For a generally successful implementation of 3D-printers they need to be affordable for the smaller companies. Otherwise the larger firms risk to put the smaller firms out of business. Since concrete is a material with a relatively large impact on the environment this may cause consequences for the environment in the future since its already in an exposed situation. Since it´s globally working actively with improving the environment the focus should be in producing more environmentally acceptable concrete for the 31d-printers.

    Limitations: The study was limited to a handful of Swedish constructional companies within the Gothenburg region. In the report, only the opinions of a few respondent are taken to consideration.

    Download full text (pdf)
    fulltext
  • 4.
    Alobaidi, Ishtar
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Alissio, Zanyar
    University of Borås, Faculty of Textiles, Engineering and Business.
    Kommunikation inom byggprojektledning2018Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The key to a successful project is good communication between the parties that are involved, which can at times be a challenge. There are a lot of communication channels and communication methods in the construction industry for people to communicate and integrate with each other. It is important to clarify the rules and tools (project networks) used in each project. Communication shortages have an impact on the project budget and the final result. Swedish construction service claims that the construction industry's costs of communication shortages amount to approximately SEK 32 billion per year. The purpose of this survey is to find out how communication works at present in building project management and to find better communication paths and methods to reach out more effectively and minimize communication shortages. There are many questions about how to minimize communication bans. In this report, the following questions will be answered:

    • How clear is the communication in a construction project from start to finish?

    • Which communication routes prefer project managers and other project participants?

    • How is the communication of other receiving parties interpreted?

    • What do project managers and other project participants see on today's platforms?

    These issues were initially answered by a theory study to strengthen the background and give a deeper understanding of the subject. However, interview and questionnaires were conducted with 16 participants each. These participants were mainly project managers and construction managers, but also other project participants. The survey showed that between the communication channels (personal meetings, phone, platforms and e-mail), personal meetings were the most appreciated. The positive of meetings is that it gives the opportunity to answer the questions and concerns you have in place. The disadvantage of personal meetings is that it is time-consuming and costly in comparison with the other communication channels. What replaces the next personal meetings is video meetings. Video meetings are cheaper to communicate with, but is not often used amongst the participants. Studien also shows that IT tools in the construction industry are a few years after comparable with other industries. This is due to the complexity of the industry and that there is no single tool for communication. The result of this study shows that improved communication costs money by introducing more personal meetings. Probably, this is ultimately beneficial given the fact that mistakes and misunderstandings are minimized. Thus, it can be seen as a profit for each project.

    Download full text (pdf)
    fulltext
  • 5.
    Andersson, Niklas
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Henriksson, Sofie
    University of Borås, Faculty of Textiles, Engineering and Business.
    Retuprocessen ur återförsäljarnas perspektiv: En fallstudie på Volvo Cars Global Customer Service2018Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Processing and managing automotive parts have increased in recent years, and consequently increased the costs for companies. The objective of this thesis is to investigate the possibilities of optimizing the spare parts return process within the car industry. This thesis was carried out at Volvo Cars Global Customer Service, and thus limited the investigation on how their resellers of spare parts acknowledged the process in its entirety. The study was conducted by analysing the current situation, including interviews with representatives from Volvo’s sales department and other companies within the same industry. The aim of the study was to specifically identify areas of the return process, which could be more efficient. Furthermore, concrete improvements were then presented as solutions to the identified weak points. The following results obtained from the study shows, in some cases, that the return process is considered as very complicated. Moreover, there is a noticeable dissatisfaction amongst retailers regarding the system, which manages the return of spare parts. The opinion of many retailers is that it takes to much time to investigate and work beforehand instead of approving returns and then checking. The results yielded in this thesis shows the importance on how the proposed improvements can facilitate retailers, and, in long term, reduce the lead times for a more efficient process.

    Download full text (pdf)
    fulltext
  • 6.
    Andersson, Roy
    et al.
    University of Borås, School of Engineering.
    Månsson, Bo
    University of Borås, School of Engineering.
    Yar Hamidi, Daniel
    University of Borås, School of Business and IT.
    Resilience in the supply and demand chain a new management strategy2012Conference paper (Other academic)
    Abstract [en]

    The length and complexity of the supply chain tend to increase, rather than diminish, thereby making the supply chain riskier and less predictable and, hence, more vulnerable. At the same time, customers are becoming increasingly demanding. The challenge to businesses today is to create a resilient supply chain in order to manage and mitigate risk and vulnerability. The purpose of this paper is to describe the use methods and tolls from quality and logistics can improve supply chain resilience. There are five principles that characterise supply chain resilience: risk management culture, agility, design-and innovation-led organisations, collaboration and spreading and anchoring of the vision, goal, values and methods. Using a combined quality management philosophy, the speed of process could be increased, and the responsiveness and flexibility could be improved, which means quicker response to changes. It has also been indicated that a combined quality management philosophy improves the companies’ resilience, due to their increased agility and strengthened ability to handle variability and risk management. Quality management tools can be very effective in the companies’ efforts to control supply chain risk and to identify risk sources of variation, even outside the focal company.

  • 7.
    Anell, Nicklas
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Haverstal, Albin
    University of Borås, Faculty of Textiles, Engineering and Business.
    Sociala aspekter på en multikulturell byggarbetsplats: Arbetsmiljö & säkerhet2017Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The report is written in collaboration with H2 Entreprenad AB and focuses on the workenvironment with foreign subcontractors on the Swedish labor market in the constructionindustry. A comprehensive literature study has been done and completed with an interviewstudy.The construction industries production rate is at levels equal to the days of the millionprogram in the 60s and 70s. 710 000 new homes are needed between 2015 and 2025according to Boverket. With such pressure on the construction industry, companies havedifficulty in obtaining labor. This is one of the reasons why posted workers have increasedsignificantly in Sweden in recent years.The foreign labor force gives access to new skilled labor, which is usually cheaper. However,the requirements of management of foreign subcontractors taken in are increasingsignificantly, leading to enlarged costs. The risk of a foreign worker being injured in aSwedish workplace is also 36 % higher, and the risk of dying is four times the size of aSwedish. This means that a greater focus on a functioning work environment is needed, whichwill operate despite language barriers.The social and cultural differences are analyzed and processed in the report, how hierarchiesand guidance for professional workers are done in a comparison between Swedish and foreignsubcontractors.

    Download full text (pdf)
    fulltext
  • 8. Axelson, Mats
    et al.
    Nagy, Agnes
    University of Borås, School of Engineering.
    Träkonstruktioner EK5 Materialegenskaper och dimensioneringsregler för balkar, pelare och förband2011Book (Other academic)
    Abstract [sv]

    Standarden Eurokod 5 är gällande dimensioneringsstandard sedan januari 2011. Denna handbok innehåller en samling av formler och tabeller för materialegenskaper och dimensionering av träkonstruktioner enligt Eurokod 5. I skriften behandlas både brottkraven som ställs på bärande konstruktioner och funktionskraven såsom nedböjning. Spik- och skruvförband, dimensioneringsformler och minimikrav presenteras följt av en samling av praktiska övningar med lösningsförslag. Handboken framställdes i samarbete mellan Högskolan i Borås och SP Trätek.

  • 9.
    Bliander, Malin
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Nyström, Viktor
    University of Borås, Faculty of Textiles, Engineering and Business.
    En studie för en förbättrad besiktningsprocess inom bostadsproduktion2017Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Within the construction industry, inspections of the construction are made to secure that thequality and its functions are accurate according to the demands from the purchaser of theproject. This study examines different tools that can be helpful to use in order to secure a lowrange of inspection remarks to achieve an improved inspection process within the constructionindustry. To investigate how and where an improvement can be made, a survey of inspectionremarks were performed. The survey was supplemented by an interview to gain employersaspect on how Skanska could achieve an improved inspection process. Skanska has recentlyintroduced a new routine of the inspections, with the purpose of reducing the number of remarksand getting satisfied customer.The effect of the new routine has been studied and the result shows that Skanska is not far fromreaching the goal, however improvements can still be made. The new routine provides a betteropportunity to locate the remarks earlier in the construction process and there for more time torepair the remarks is gained. Thus there will be fewer remarks on the final inspection eventhough the overall numbers of remarks during the whole inspection process will remain thesame.Both the survey and interview manifested the areas where focus should be directed in order toimprove the inspection process. The contributing factors to the results are discussed andproposals for improvements are presented.This study will hopefully contribute to an understanding for the inspection process within theconstruction industry. Also bring understanding for the reasons why construction often gets alarge number of inspection remarks and how they could be avoided.

    Download full text (pdf)
    fulltext
  • 10.
    Carlsson, Jenny
    University of Borås, Faculty of Textiles, Engineering and Business.
    Intressentdialog och väsentlighetsanalys på Wästbygg: Hållbarhetsredovisning enligt det internationella ramverket GRI, Global Reporting Initiative2017Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Kraven från omvärlden om att företag ska ta ett aktivt ansvar för ett hållbart samhälle ökar hela tiden. Företagen ansvarar inte längre bara för att generera en god avkastning till sina aktieägare utan också för att agera för en hållbar utveckling. EU-direktivet som kom 2014 med krav på hållbarhetsredovisning i medlemsländerna införlivades i svensk lag den 1 december 2016 med start för räkenskapsåret 2017. Hållbarhetsredovisningen ska redogöra för hur företag arbetar med miljö, mänskliga rättigheter, sociala förhållanden och motverkande av korruption. Detta berör alla större företag i Sverige som för vart och ett av de två senaste räkenskapsåren uppfyller två av tre kriterier att ha överstigit; 350 miljoner kronor (40 miljoner Euro) i nettoomsättning, medeltalet anställda med 250 och en balansomslutning på 175 miljoner kronor (20 miljoner Euro). Wästbygg är ett entreprenad- och projektutvecklingsbolag som bygger och utvecklar logistikanläggningar, kommersiella fastigheter och bostäder. Företaget växer stadigt och har idag cirka 230 anställda. Nettoomsättningen uppnår till drygt 2 miljarder kronor. Inom de närmaste åren kommer man enligt lagen att behöva hållbarhetsredovisa. Syftet med magisteruppsatsen är att hjälpa Wästbygg att genomföra en intressentdialog och väsentlighetsanalys som är det inledande steget i en hållbarhetsredovisning enligt det internationella ramverket GRI. Resultatet ska visa på vilka hållbarhetsfrågor som intressenterna anser ska högst prioriteras och adresseras av Wästbygg. Detta kommer ligga till grund för Wästbyggs första hållbarhetsredovisning med ramverket GRI. Intressentdialogen genomfördes under våren 2017 genom webbaserad enkät, personliga intervjuer och dialog med blivande byggingenjörsstudenter. I väsentlighetsanalysen framkom det enhälligt att intressenterna anser att sociala aspekten hälsa och arbetsmiljö bör vara den högst prioriterade frågan för Wästbygg. Redan idag är frågan prioriterad då Wästbygg är ISO-certifierade enligt standarden för arbetsmiljö: OHSAS 18001. Andra hållbarhetsfrågor som intressenterna anser bör prioriteras av Wästbygg är de ekologiska aspekterna; utfasning av miljö- och hälsofarliga byggnadsmaterial och energieffektiva byggnader och byggarbetsplatser samt sociala aspekten etik och antikorruption.

    Download full text (pdf)
    fulltext
  • 11.
    Darányi, Sándor
    University of Borås, Swedish School of Library and Information Science.
    Látvány és jelentés: Budapesti épuletszobrok elemzése és fejlödéstörténeti modellezése2007Conference paper (Other academic)
  • 12.
    Dessne, Karin
    University of Borås, Faculty of Librarianship, Information, Education and IT.
    Vägen till samarbete: Innovationsplattform Norrby och Textile Fashion Center2016Report (Other academic)
    Abstract [sv]

    Samarbete mellan organisationer som kan främja forskning och utveckling sker ofta i regional kontext mellan akademi, näringsliv och myndigheter. Två sådana regionala samarbeten för Borås återfinns som fallstudier i denna rapport: Innovationsplattform Norrby och Textile Fashion Center.

    Många studier kring samarbete har sin hemvist främst inom management och ekonomi där fokus ligger på att identifiera framgångskoncept för att styra, kontrollera och hantera samarbete. Kunskap ses som något som bör överföras till nytta för den enskilde aktören och lärande ses som en konsekvens av att systematiskt överföra kunskap mellan organisationer. Dessa studier har även konstaterat att det i samarbete över organisationsgränser bland annat finns skillnader i kulturer och rutiner, bristande tillit och bristande respekt av varandras kompetens. Hur dessa faktorer påverkar de sociala relationerna har dock inte studerats i någon större utsträckning. Färre är således de studier som i stället med sociala utgångspunkter undersöker lärande mellan organisationer när det gäller själva dynamiken i relationerna – särskilt på den operativa nivån. Det behövs mer kvalitativt inriktad forskning för att förstå samarbete som äger rum i sådana relationer för att på så sätt också få insikt i hur samarbete mellan organisationer kan skapas, underbyggas och utvecklas.

    Denna rapport presenterar en kvalitativ studie som undersöker hur relationer i ett samarbete mellan organisationer kan se ut och på vilka sätt organisationer kan skapa förutsättningar för att bygga samarbete utifrån ett socialt lärandeperspektiv. Studien har genomförts inom ramen för Collaboration Arenas, CARENA, ett större forskningsprojekt finansierat av Vinnova. I CARENA arbetade sex lärosäten tillsammans för att utveckla modeller eller arenor för strukturerat och långsiktigt samarbete. Förutom Högskolan i Borås medverkade högskolorna i Trollhättan, Skövde, Jönköping, Halmstad och Malmö.

    Download full text (pdf)
    fulltext
  • 13.
    Ekwall, Daniel
    University of Borås, Faculty of Textiles, Engineering and Business.
    Cargo theft at non-secure parking locations2015In: International Journal of Retail & Distribution Management, ISSN 0959-0552, E-ISSN 1758-6690, Vol. 432, no 1, p. 204-220Article in journal (Refereed)
    Abstract [en]

    Purpose – The purpose of this paper is to examine the patterns of reported cargo thefts at

    non-secure parking facilities in Europe, the Middle East, and Africa (EMEA) with respect to stolen

    value, frequency, incident category, and modi operandi.

    Design/methodology/approach – This study is based on a system-theoretical approach that

    emphasizes on a holistic rather than an atomistic view. The research method used in this paper is

    deductive; the analysis is based on data obtained from the incident information service (IIS), a database

    of transport-related crimes from the Transported Asset Protection Association (TAPA) in the EMEA

    region. The results are analysed and discussed within a frame of reference based on supply chain risk

    management (SCRM) and criminology theories.

    Findings – We found that 97 per cent of all attacks during a stop occur at non-secure parking

    locations. Cargo thefts at these locations are more of a volume crime than high-value thefts. Seasonal

    variations were seen in these thefts, and the most common type was an intrusion on weekdays

    during winter.

    Research limitations/implications – This study is limited by the content of and the classifications

    within the TAPA EMEA IIS database.

    Practical implications – This paper is directly relevant to the current EU discussions regarding the

    creation of a large number of secure parking facilities in the region.

    Originality/value – This is one of the first papers in the field of SCRM that utilizes actual crime

    statistics reported by the industry to analyse the occurrence of cargo theft by focusing on the

    non-secure parking aspect in the transport chain.

    Download full text (pdf)
    fulltext
  • 14.
    Ekwall, Daniel
    University of Borås, Faculty of Textiles, Engineering and Business.
    Modi operandi for cargo theft in EMEA—A seasonality analysis2015In: Journal of Transportation Security, ISSN 1938-7741, Vol. 8, no 3-4, p. 99-113Article in journal (Refereed)
    Abstract [en]

    This paper identifies patterns and trends in cargo theft by analysing seasonal

    variations (by time of year and time of week) in the relationship between value

    (reported stolen value) and various reported modi operandi. This research is exploratory

    in nature; it is based on theories derived from criminology and logistics as well as

    secondary data related to cargo theft. For practical purposes, the research is geographically

    limited to EMEA; however, the frame of reference is applicable to the analysis of

    antagonistic threats to transport worldwide. Though patterns differ across categories,

    for some modi operandi, seasonal patterns are found across both months of the year and

    days of the week. Despite variations in hot spots, incident categories, stolen and

    endangered objects, and handling methods, the basic theoretical framework is generally

    applicable. This research is limited by the content and classificatory scheme of the TAPA

    EMEA IIS database. However, this is the best available database and it contains anonymous

    reports that are mainly from TAPA member companies that are in the industry itself.

  • 15.
    Ekwall, Daniel
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Brüls, Helmut
    FreightWatch International, Head of EMEA Intelligence.
    Wyer, Daniel
    Freightwatch International, EMEA Intelligence Analyst.
    Theft of pharmaceuticals during transport in Europe2015In: Journal of Transportation Security, ISSN 1938-7741, E-ISSN 1938-775X, Vol. 9, no 1, p. 1-16Article in journal (Refereed)
    Abstract [en]

    The purpose of this paper is to identify and describe the scale of cargo theft in

    the European pharmaceutical supply chain in 2014. The study is based on a systemtheoretical

    approach which emphasises a holistic rather than atomistic view. The

    research in this paper is deductive and descriptive in its nature and aims to present a

    current description of theft of pharmaceuticals in a European perspective. This paper’s

    hypotheses on cargo theft have been developed from theories of criminology, for

    applicable use, to strengthen the scientific field of logistics. A survey was conducted

    in autumn 2014 whereby the respondents were asked to provide their opinions in

    relation to eleven questions. The survey was sent out to all major players in the

    European pharmaceutical sector – manufacturers and logistics providers specializing

    in pharmaceuticals. The survey captured more or less 80 % of the European pharmaceutical

    manufacturers' market share.We found that the current threats against European

    pharmaceutical transport are small in relative occurrence terms (relatively few attacks on

    a yearly basis compared to other product categories) but on an impact basis thefts of

    pharmaceuticals place as one of the top targets (value wise) for criminals. This research

    supports other sources that the current geographical hot spot for these thefts in Europe is

    in Italy. The top risks are rated as either robbery or theft from vehicle at unsecure parking

    areas. These two different modi operandi can be divided into one frequency related

    threat (theft from unsecure parking) and one impact related risk (robbery).

  • 16.
    Ekwall, Daniel
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Lantz, Björn
    Chalmers University of Technology.
    Cargo theft risk and security: product and location2017In: NOFOMA 2017 THE 29TH NOFOMA CONFERENCE: TAKING ON GRAND CHALLENGES / [ed] Daniel Hellström, Joakim Kembro, Hajnalka Bodnar, Lund, 2017Conference paper (Other academic)
    Abstract [en]

    Purpose - The purpose of the study is to explore cargo theft risk and security for different product types at different locations along a transport chain. Design/methodology/approach - This study is based on a system-theoretical approach. The research method is deductive as the analysis is based on secondary data and results from a questionnaire. The results are analyzed based on supply chain risk management (SCRM) and criminology theories. Findings - Due to substantial interaction effects, the type of product and transport chain location must be considered to determine the correct level of security. Specifically, the product type is more significant since the general cargo theft risk is higher. Furthermore, the transport industry has three perspectives of security responses to cargo theft: demanded, needed, and actual security, which differ depending on the product type and transport chain location. Research limitations/implications - This study is limited by the content and classifications of the Transported Asset Protection Association (TAPA) of the Europe, Middle East, and Africa (EMEA) Incident Information Service (IIS) database as well as by the attendees of the 2015 TAPA EMEA Q4 conference. Practical implications - This paper has both research and practical implications as it studies security within freight transport from three perspectives as linked to general cargo theft risk and goods owners’ requirements. Originality/value - This paper addresses the contemporary SCRM problem of cargo theft using actual crime statistics and the industry understanding of generic required security levels.

    Download full text (pdf)
    fulltext
  • 17.
    Ekwall, Daniel
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Lantz, Björn
    Chalmers University of Technology.
    The use of violence in cargo theft – a supply chain disruption case2018In: Journal of Transportation Security, ISSN 1938-7741, E-ISSN 1938-775XArticle in journal (Refereed)
    Abstract [en]

    This paper examines patterns of reported cargo thefts involving violence in the Europe, Middle East, and Africa region with regard to the value of stolen goods, incident frequency, transport chain location, and incident category. The research method is deductive and is based on analyses of secondary data obtained from the Incident Information Service by the Transported Asset Protection Association. The results are discussed within a frame of reference based on supply chain risk management and supply chain disruption literature. We found that perpetrators who use violence seem to cause greater losses per theft than those who use other types of modus operandi. Further, the most common type of violent cargo theft occurs on Mondays in January when cargo vehicles are robbed on the road and consumer electronics are stolen. In terms of supply chain disruption, violent cargo thefts can be seen as externally-caused disruptions, which can indirectly cause major problems for the supply chain.

    Download full text (pdf)
    fulltext
  • 18.
    Ekwall, Daniel
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Lantz, Björn
    Chalmers University of Technology.
    THEFT OF GOODS IN PORTS A review of TAPA EMEA IIS statistics2018Report (Other academic)
    Abstract [en]

    This report examines patterns of reported cargo thefts at maritime transport facilities in Europe, the Middle East, and Africa (EMEA) with respect to frequency, incident category, modus operandi, and targeted product category. The analysis is based on data obtained from the Incident Information Service (IIS), a database of transport-related crimes from the Transported Asset Protection Association (TAPA) in the EMEA region. The results are analysed and discussed within a frame of reference based on supply chain risk management and criminology theories. We find that maritime transport facilities constitute a rare target location for cargo thieves, as only 102 of more than 24,500 incidents (0.4%) in the IIS database occur there. Nevertheless, some conclusions can be made. First, there seems to be seasonality in day of the week, but probably not in month of the year. Second, violent and fraudulent modi operandi of theft at maritime transport facilities are about as common as in the whole data set. Thus, it could be conjectured that the impact from violent and fraudulent incidents is several times higher than the most common types of incident category or modus operandi, although this is unsupported in this study. The product categories signal that there is big variation in value in stolen goods. Third, it is possible that potential perpetrators consider security levels at maritime transport facilities to be higher, leading to fewer theft attempts. This study is limited by the content of and classifications within the TAPA EMEA IIS database.

    Download full text (pdf)
    fulltext
  • 19.
    Ericsson, D.
    University of Borås, School of Engineering.
    Demand Chain Management2012Conference paper (Other academic)
  • 20.
    Ericsson, Dag
    University of Borås, School of Engineering.
    Demand Chain Management: The evolution2011In: ORiON: The Journal of ORSSA, ISSN 0529-191X, Vol. 27, no 1, p. 45-81Article in journal (Refereed)
    Abstract [en]

    The concepts of Supply Chain Management (SCM) and Demand Chain Management (DCM) are among the new and debated topics concerning logistics in the literature. The question considered in this paper is: \Are these concepts needed or will they just add to the confusion?" Lasting business concepts have always evolved in close interaction between business and academia. Di erent approaches start out in business and they are then, more or less simultaneously, aligned, integrated, systemised and structured in academia. In this way a terminology (or language) is provided that helps in further di usion of the concepts. There is a lack of consensus on the de nition of the concept of SCM. This may be one of the major reasons for the difficulty in advancing the science and measuring the results of implementation in business. Relationships in SCM span from rather loose coalitions to highly structured virtual network integrations. DCM is a highly organised chain in which the key is mutual interdependence and partnership. The purpose is to create a distinctive competence for the chain as a whole that helps to identify and satisfy customer needs and wishes. The classical research concerning vertical marketing systems is very helpful in systemising the rather unstructured discussions in current SCM research. The trend lies in increasing competition between channels rather than between companies, which in turn leads to the creation of channels with a high degree of partnership and mutual interdependence between members. These types of channels are known as organised vertical marketing systems in the classic marketing channel research. The behaviour in these types of channels, as well as the formal and informal structures, roles in the network, power and dependence relations, etc. are well covered topics in the literature. The concept of vertical marketing systems lies behind the de nition of demand chains and demand chain management proposed in this paper. A demand chain may be de ned as an integrated and aligned chain built on partnership and mutual interdependence aiming at the creation of a unique competence to identify and satisfy customer perceived value, while demand chain management may be de ned as the e ort to create, retain and continuously develop a dynamically aligned demand chain.

  • 21.
    Gustafsson, Sebastian
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Jansson, Gösta
    University of Borås, Faculty of Textiles, Engineering and Business.
    Avvikelser mellan projekterad och verifierad energiprestanda för nyproducerade lågenergibyggnader: En studie av AB Bostäders svårigheter att leva upp till uppsatta energikrav i deras nybyggda flerbostadshus2017Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The energy performance of buildings directive means that all new buildings must be nearly zero energy buildings by 31 December 2020. The current requirements mean that constructor companies must tighten their energy requirements when procuring multi-family houses. Lowenergy buildings as concepts play an important role in achieving sustainable development, and it is of the utmost importance that future construction projects become effective both in the construction process and on further operation.  New construction of low-energy buildings has proved to be quite problematic in many aspects, where the measured energy performance in many cases proved to be significantly higher than projected. With the new building practice with better insulation, air tightness and ventilation with recycling – hot water supply and household appliances become the largest energy posts in a building's energy balance.  The purpose of this master thesis is to concretize the problems that exist for newly produced multi-family houses with energy requirements for low-energy buildings. Based on this, focus has been on two building that AB Bostäder Borås recently has built – both built to achieve low energy requirements.  As expected, this master thesis shows the difficulty to deduce the problem to specific aspects. The construction process itself may be the source of error, where time shortages, inadequate communication and lack of knowledge concerning low energy buildings are present in an industry with difficulties catching up with the demanded volume of new construction. Regarding specific sources of vulnerability to energy performance, our report supports previously published reports where the lack of input data for energy calculations, the impact of the construction process, negligence of losses due to recirculation of hot water and the importance of user behaviour have been highlighted.

    Download full text (pdf)
    fulltext
  • 22.
    Hagberg, Ebba
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Björklund, Markus
    University of Borås, Faculty of Textiles, Engineering and Business.
    Koldioxidreducerande åtgärder inom ett anläggningsprojekt2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This report is a part of the three-year Bachelor in Civil Engineering program at the University of Borås. The study describes the potential of improvement that the project Knutpunkt Gamlestaden have, in order to reduce the carbon footprint. Brief descriptions of the items rebar, asphalt, fuel and slabs of natural stone is given, where the production and  ransportation are considered.

    The authors have looked at alternative producers and materials, which ultimately reduces the project's total carbon footprint. It has also been taken into account if these options are available and realistic to implement in the project. The possible advantages and  isadvantages that the change can bring are discussed. With help from Skanska's in-house climate calculation tool, the potential for improvement is graphically described. This is to demonstrate the carbon load and to be able to compare the new options to the existing ones.

    Download full text (pdf)
    fulltext
  • 23.
    Haji, Hassan Yasin
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Beigi, Younes
    University of Borås, Faculty of Textiles, Engineering and Business.
    Ersättning av naturgrus med krossat berg i betong2017Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Concrete is one of the most used building materials in the world. It consists of a mixture of cement, water and aggregate. The concrete constitutes of approximately 65-75% of aggregates. Most of this used aggregate is natural aggregate. A replacement of natural aggregate is desirable in accordance with the Government's environmental objective for '' Groundwater of Good Quality ', which means that the use of natural aggregate will be reduced to 1-3 million tones/year by 2020. In this master thesis a study to test the replacement of natural aggregate with crushed stone in concrete is presented. The goal was to produce equivalent properties to standard concrete in the new concrete mix, both in terms of compressive strength and workability. Another goal was to find out how an increasing use of crushed aggregates would contribute to achieve sustainable development in the concrete industry. The work was carried out in cooperation with Ulricehamn Betong AB (UBAB), a concrete factory near Ulricehamn. The work consisted of laboratory study where two test series results were compared with tests from a "reference concrete". The reference concrete is based on a well-known and proven concrete recipe from UBAB. The two test series comprise two parameters that are varied in the concrete mixture, the crushed rock fraction and the amount of additive, so-called superplasticizer. The purpose was to investigate how the variation of these two parameters in the concrete mixture affects the properties of concrete such as compressive strength and workability. The tests were carried out on cast cubes at 1 and 28 days of age and, when appropriate, at 5 days of age. The results of all these tests are presented and analyzed in the report. A sustainability analysis of aggregate in general and concrete aggregate in particular is also presented in the report. This sustainability analysis describes the environmental impact of transport that is attributed to aggregate material both in a local and global perspective. Test results from all trials show that these essential properties are unchanged and are equivalent to the concrete which mostly contains natural aggregates. The rock is available nearby area, which in turn leads to less transport and less emissions to the air. Increased consumption of concrete with most of crushed rock contributes to the sustainability of the concrete industry in general and the achievement of UBAB's sustainability targets on reduced CO2 emissions. From a social sustainability perspective, a concrete with up to 70% crushed rocks is a work environmentally friend and a sustainable solution to the ending natural aggregates. To achieve a concrete production with more crushing rock, a research on the subject should be done until the replacement of the natural aggregates comprises 100% of the concrete ballast and at least 3 tests of same attempt must be done to exclude the chance.

    Download full text (pdf)
    fulltext
  • 24.
    Huč, Sabina
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Hozjan, Tomaž
    University of Ljubljana.
    Svensson, Staffan
    University of Borås, Faculty of Textiles, Engineering and Business.
    Rheological behavior of wood in stress relaxation under compression2018In: Wood Science and Technology, ISSN 0043-7719, E-ISSN 1432-5225Article in journal (Refereed)
    Abstract [en]

    Rheological behavior of wood under uniaxial compression along and perpendicular to the grain in constant environment was examined. Tests with constant deformation rate until failure and stress relaxation tests with constant deformation applied stepwise were carried out. The experimental results of stress relaxation showed nonlinear material behavior over time that got more prominent under high deformation levels. Considerable amount of stress relaxed during applying the deformation. Wood experienced greater stress relaxation along the grain than perpendicular to it. Three rheological models for orthotropic material were calibrated to the experimentally determined stress–time curves in longitudinal and transverse directions simultaneously. Small deformation levels assuming linear strains were accounted for in the models. Required elastic material parameters were determined from the tests with constant deformation rate. A model including the highest number of viscoelastic material parameters was the most successful in predicting stress relaxation of wood under stepwise deformation. Modeling indicated that wood behavior was very close to linear viscoelastic in relaxation under small deformation. The obtained material parameters made the model suitable for predicting rheological behavior of wood comprehensively, under sustained deformation or load in constant conditions

  • 25.
    Huč, Sabina
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Svensson, Staffan
    University of Borås, Faculty of Textiles, Engineering and Business.
    Coupled two-dimensional modeling of viscoelastic creep of wood2018In: Wood Science and Technology, ISSN 0043-7719, E-ISSN 1432-5225, Vol. 52, no 1, p. 29-43Article in journal (Refereed)
    Abstract [en]

    Three coupled two-dimensional viscoelastic creep models for orthotropic material are analyzed. The models of different complexity are mathematically formulated and implemented in a finite element software. Required viscoelastic material parameters are determined by calibration procedure, where numerical results are compared against experimentally obtained viscoelastic strains caused by tensile or shear loading. Finally, a comparison method is used to evaluate the accuracy of strain predictions of each particular model. The analysis shows that all the models are able to accurately predict viscoelastic creep simultaneously in two perpendicular directions for various periods of time and wood species. Calculated numerical values of the viscoelastic material parameters suitable for the three models and wood species, i.e., Douglas fir (Pseudotsuga menziesii), Norway spruce (Picea abies), Japanese cypress (Chamaecyparis obtusa), and European beech (Fagus sylvatica L.), under constant tensile loading are also given.

  • 26.
    Johansson, Mikael
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Hedberg, John
    University of Borås, Faculty of Textiles, Engineering and Business.
    Säker arbetsmiljö med visuell planering2017Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Work environment is one of the top priorities during production in the construction industry today. The production increases steadily and with this also the employment in the industry. Despite the high priority of a good and safe work environment it still occurs to many accidents on the building sites today. The objective of this report is to measure the safety culture of a department-group in NCC infrastructure, and provide them with suggestions of visual tools. That could contribute to enhance the safety culture, which is the main purpose of this research.  A safety culture survey-tool was used to conduct the measurement of the safety culture to officials and skilled workers on the selected department-group. The results have identified areas for improvement in the working environment. These results have been the base for the suggested improvement proposals for the work environment. This project have been demarcated to investigate how work environment can bee improved with visual communication, that were derived from the philosophy Lean Production in this study.    The results of the study indicate a high-risk acceptance among workers during the influence of time pressure. Above all, the result showed that skilled workers were more susceptible to risk behaviour, but it also showed that officials felted that risks were taken during time pressure. With this results as a base has the study focused on the importance of identifying risks before an operation are performed. At the same time could all involved be notified regarding these risks. Further have a visual board been prepared as an suggestion of improvement, there week timetables, incident reporting, and preparing safety work are visualized. This is the purpose with the visual board, to make everyone involved and notified about the risks. Participations are utmost important after that the study have shown that early involvement are extremely important because it generates a larger engagement and contributing to a sense of better health amongst the workers.  With visual planning of work environment on building sites is the anticipation that it will clarify and simplify the demanded routines that are necessary in the work towards a safer building site.

    Download full text (pdf)
    fulltext
  • 27.
    Kader, Narmin
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Khoshdel, Kimia
    University of Borås, Faculty of Textiles, Engineering and Business.
    Fuktsäkerhet inom nyproduktion: Väderskydd2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This report is created in order to pay attention to moisture safety in new constructions with the help of weather protection systems. This is a new technique which has been introduced to the construction business, but it is a technique that has still not raised enough attention in the business. It is obvious that the advantages with such a system outweigh the cons although most clients choose the traditional way of retaining a smaller budget when the production starts, a short term solution which leads to greater risks due to a lack of moisture protection during construction. It could be difficult to win procurement for an entrepreneur, with calculations included for weather protection system because of high costs. The combination of weather protected construction and prefabricated material can be used to minimize the risk of moisture damage. Prefabricated construction also contributes to shorter construction times and less workspace. Due to the difficulty in presenting concrete calculations for usage of weather protection systems, the efficiency gains are highlighted to promote knowledge about benefits. The earlier the decision of implementation of weather protection systems are made, the better the construction is secured from moisture. Many clients have been interviewed during this project and they found the high costs of such a system to be a disadvantage. The purpose of this research is to change this viewpoint and prove the long-term practical and economic advantages. Production not reliant on weather will yield favorable results for multiple parties invested in the project.

    Download full text (pdf)
    fulltext
  • 28.
    Katainen, Fredrik
    University of Borås, Faculty of Textiles, Engineering and Business.
    Dimensionering av byggnadsställningskonstruktioner: Handledning vid beräkning2016Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The report provides a base of documents for design of scaffolding not covered by typical

    cases.

    The documents have since been applied to two examples and then evaluated with regard

    to the appropriate calculation time and working method.

  • 29.
    Kurkinen, Kimmo
    University of Borås, School of Engineering.
    Moisture conditions in a cold attic: Case study of design2014Conference paper (Refereed)
  • 30.
    Kurkinen, Kimmo
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Almgren, Thomas
    Afzali, Mansoor
    Tidiga erfarenheter av en kallvind med minimal ventilation2016In: Bygg & teknik, ISSN 0281-658X, no 4, p. 16-20Article in journal (Other academic)
  • 31.
    Ma, Ke
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Gustafsson, Eva
    University of Borås, Faculty of Textiles, Engineering and Business.
    Pal, Rudrajeet
    University of Borås, Faculty of Textiles, Engineering and Business.
    IDENTIFYING INTER-ORGANIZATION COLLABORATION TYPES AND RESEARCH ADVANCEMENTS IN SUPPLY CHAIN CONTEXT2015In: The Proceedings of 20th International Symposium on Logistics (ISL 2015): Reflections on Supply Chain Research and Practice / [ed] KS Pawar, H Rogers and E Ferrari, Nottingham, NG8 1BB UK: Centre for Concurrent Enterprise, Nottingham University Business School, 2015, p. 165-172Conference paper (Refereed)
    Abstract [en]

    The main purpose of this state-of-the-art paper is to make a synthesis analysis oncollaboration in supply chain by literature review of all relevant articles, conceptualizingcollaboration in supply chain and providing implications for future research. Based ondesigned material collection standard, up to year 2014, a total of 1250 papers are usedfor descriptive analysis and a total of 509 papers are carefully reviewed for furtherclassification, conceptualization and comparison analysis. Research in this field is in anincreasing trend in general but most of collaboration in supply chain is still in a low levelin research. Another interesting finding is that logistics seems to be the most promisingsupply chain stage for research about collaboration in supply chain.

    Download full text (pdf)
    IDENTIFYING INTER-ORGANIZATION COLLABORATION TYPES AND RESEARCH ADVANCEMENTS IN SUPPLY CHAIN CONTEXT
  • 32.
    Manfredsson, Peter
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Andersson, Roy
    Jönköping University.
    Lantz, Björn
    Technology Management and Economics, Chalmers.
    Total productive maintenance in support processes: an enablerfor operation excellence2015In: Total Quality Management and Business Excellence, ISSN 1478-3363, E-ISSN 1478-3371, Vol. 26, no 10, p. 1042-1055Article in journal (Refereed)
    Abstract [en]

    In order to stay competitive in today’s marketplace, it is vital to reduce activities that do

    not create value. Lean production has in the last decade been seen as a philosophy to

    reduce non-value time. The office environment often presents a major improvement

    opportunity to reduce non-value time. Lean contributes positively to business

    performance applied in a manufacturing context and is also suggested to do the

    same in a service context. The purpose of the paper is to analyse and determine how

    total productive maintenance (TPM) can be applied within the support process and

    to identify effects from an employee and business perspective. A case study has

    been performed and a qualitative research approach was selected. Empirical data

    were gathered by using semi-structured interviews at one case company, but from

    several teams that had applied TPM. The result was then used as an inductive

    approach to explore how TPM can be applied in a support process. To implement

    and apply TPM within an office context, it should be structured in three steps

    (i) define, (ii) implement and (iii) sustain. TPM should be conducted as a part of the

    ordinary day-to-day work. The planning and discussions connected to TPM can be

    included in regular daily departmental ‘stand-up meetings’ involving everybody. The

    work with 5S and maintenance should also be a part of the TPM structure,

    connecting it as a system and not as an isolated activity. TPM can create value from

    both a business and an employee perspective. In the employee perspective, TPM

    reduces the risk of missing/forgetting areas of responsibility and creates more

    involvement. In the business perspective, objectives such as cost and quality are

    improved, but TPM also enables the reduction of waste.

  • 33.
    Munch-Andersen, J.
    et al.
    Danish Timber Information.
    Svensson, Staffan
    University of Borås, Faculty of Textiles, Engineering and Business.
    Fasteners and connections in the next Eurocode 52013In: Proceedings of the Cib - W18: Working Commission W18 - Timber Structures, ISSN 1864-1784, p. 399-401Article in journal (Refereed)
  • 34. Männistö, Toni
    et al.
    Hintsa, Juha
    Urciuoli, Luca
    University of Borås, School of Engineering.
    Supply Chain Crime Taxonomy Development and Empirical Validation2014In: International Journal of Shipping and Transport Logistics, ISSN 1756-6517, E-ISSN 1756-6525, Vol. 6, no 3, p. 238-256Article in journal (Refereed)
  • 35.
    Nagy, Agnes
    University of Borås, School of Engineering.
    Fiberförstärkt massivträ2013Report (Other academic)
    Abstract [sv]

    Syftet med projektet är att förbättra massivträprodukters mekaniska egenskaper både avseende styrka och töjbarhet genom att förstärka dem med textilmatta.

    Download full text (pdf)
    FULLTEXT01
  • 36.
    Omar, Yusuf
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Bellvik, Emil
    University of Borås, Faculty of Textiles, Engineering and Business.
    Underentreprenörernas säkerhetsarbete genom arbetsberedningar: Riskinventering, riskbedömning och arbetsberedning2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Each year there are serious accidents on building sites in Sweden. This thesis has been carried out in cooperation with Skanska House Region Gothenburg and aims to improve the safety of subcontractors to Skanska.The aim of the work was to find appropriate methods and tools that Skanska as the main contractor can use to support their subcontractors to a better security planning.The work begins with a literature study of how the accident statistics looks at construction sites, as well as a theoretical background to the process of risk inventories, risk assessments and work preparation is handled. The approach has been to examine through interviews, questionnaires and site visits to seven selected construction sites in western Sweden on how the subcontractors manages risk inventories, risk assessments and work preparations. We have also investigated what is being done today in the procurement process to ensure that subcontractors meet their responsibilities in terms of work environment at construction sites and what can be improved.The results of the research show that there are clear differences between how the safety cultures were among the various subcontractors. One of the problems is that the entrepreneurs do not have sufficient understanding of what they have for responsibility in the work environment at construction sites. To solve this, it has been investigated to what is important to strengthen subcontractor’s involvement and commitment that gives the employees the opportunity to improve their own responsibility.

    Download full text (pdf)
    fulltext
  • 37.
    Pak, Alexander
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Saleh, Reazhwan
    University of Borås, Faculty of Textiles, Engineering and Business.
    Krossad betong som ballast i självkompakterande betong: Experimentell studie om tryckhållfasthet och arbetbarhet2018Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This project is based on experimental studies. It is about the preparation and evaluation of self-compacting concrete (SCC) using Recycled Concrete Aggregate (RCA), replacing all natural aggregate fractions with 100% RCA. This degree project is part of RE:Concrete and focuses on concrete workability and compressive strength. The work was carried out in collaboration between the University of Borås and RISE CBI Concrete Institute. The purpose of the thesis was to produce a SCC with 100% RCA. Furthermore, cast cubes would give a compressive strength equivalent to 40 MPa after 7 days and 60 MPa after 28 days. Recycling of building materials is a hot topic in today's society, and interest in it is constantly increasing. This work is about closed loop recycling in the sense that RCA has been obtained from supporting elements to make SCC for supporting elements. As of today, there is a standard in Sweden regulating the use of recycled building materials in concrete production. The standard only deals with replacement of coarse aggregates in limited proportions. The results obtained in this work show that it is fully possible to manufacture a concrete for supporting structures. The highest compressive strength value obtained in this study is 56.1 MPa after 7 days with a slump flow meeting SCC requirements, however, this concrete had poor workability due to high dose of superplasticizer. In the last experimental casting, a slump flow of 750 mm has been achieved with good workability and a compressive strength after 7 days at 26.1 MPa. The latter provides a SCC with a strength class C20 / 25.

    Download full text (pdf)
    fulltext
    Download (pdf)
    avtal
  • 38.
    Pal, Rudrajeet
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Larsson, Jonas
    University of Borås, Faculty of Textiles, Engineering and Business.
    Harper, Sara
    University of Borås, Faculty of Textiles, Engineering and Business.
    Vellesalu, Ann
    University of Borås, Faculty of Textiles, Engineering and Business.
    Competitive manufacturing for reshoring textile and clothing supply chains to high-cost environment – A delphi approach2017In: Data Driven Supply Chains / [ed] K. S. Pawar; A. Potter and A. Lisec, Nottingham: Centre for Concurrent Enterprise, Nottingham University Business School, 2017, p. 70-80Conference paper (Refereed)
    Abstract [en]

    Existing knowledge of reshoring, enabled largely by competitive manufacturing (CM) strategies in high-cost locations, is limited particularly in context to labour-intensive industries, like textile and clothing (T&C). The purpose of the paper is to identify and prioritize various CM-related supply chain factors that can enable reshoring of T&C to high-cost area. Following a systematic literature review, a multiple round Delphi study is conducted with T&C manufacturers in Sweden to seek practitioners’ perspective. While there is high consensus on the success factors, flexibility to meet short lead times, high product/service quality, and product/service customization; low degree of agreement is reached for the perceived challenges. Some out of literature debates emerged in terms of challenges related to CM in high-cost area, regarding increased fixed costs of production, rise in inventory level due to high product variety requirement, and low skill level against access to skills. Along with the decisive knowledge on the CM-related success factors for reshored supply chains, the Delphi study offers an interesting practitioners’ perspective from a labour-intensive sector like T&C.

  • 39.
    Pecenko, R.
    et al.
    Univ. Ljubljana.
    Svensson, Staffan
    University of Borås, Faculty of Textiles, Engineering and Business.
    Hozjan, T.
    Univ. Ljubljana.
    Model evaluation of heat and mass transfer in wood exposed to fire2016In: Wood Science and Technology, ISSN 0043-7719, E-ISSN 1432-5225, Vol. 50, no 4, p. 727-737Article in journal (Refereed)
    Abstract [en]

    The paper presents sensitivity analysis of coupled heat and moisture transfer model for timber exposed to fire. The objective of the analysis is to discover the non-influential model parameters and the model simplification accordingly. To achieve this, the standardized regression coefficient (SRC) method is introduced to determine the impact of specific permeability of dry timber K, bound water diffusion coefficient , vapour diffusion coefficient and heat of sorption on the two model outcomes, charring depth and total moisture content . The SRC method revealed that the least influential parameter is specific permeability of dry timber K. Therefore the model was adequately simplified by a more simple description of the energy equation, while preserving the accuracy of the results. Thus, the efficiency of the present coupled heat and moisture transfer model was increased.

  • 40.
    Pecenko, R.
    et al.
    University of Ljubljana.
    Svensson, Staffan
    Hozjan, T.
    University of Ljubljana.
    Modelling heat and moisture transfer in timber exposed to fire2015In: International Journal of Heat and Mass Transfer, ISSN 0017-9310, E-ISSN 1879-2189, Vol. 87, p. 598-605Article in journal (Refereed)
  • 41. Pietrzyk, K.
    et al.
    Kurkinen, Kimmo
    University of Borås, School of Engineering.
    Hagentoft, C-E.
    Application of risk assessment technique to moisture problems in buildings2003In: Research in Building Physics: Proceedings of the 2nd International Conference on Building Physics. Leuven, Belgium, Taylor and Francis , 2003, p. 605-612Conference paper (Other academic)
  • 42.
    Rahman, Abdulsattar
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Ali, Hassan
    University of Borås, Faculty of Textiles, Engineering and Business.
    Återvunnen betong som ballast i ny betong: experimentell studie om partikelgradering, arbetbarhet och tryckhållfasthet2018Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Concrete is and has been for a long time the most common building material in Sweden. It is a robust and multipurpose building material with several advantages. This report is about an experimental study of concrete waste from Hedareds sand & betong. The concrete waste is crushed to a new aggregate and then sifted and casted into new concrete. The study was conducted in the Concrete Laboratory at University of Borås for crushing and casting of concrete. Recipes are supplied by Hedareds sand & betong as a starting point, which is later modified gradually to achieve better results. The purpose of this study is to investigate the possibilities for using recycled concrete in new constructions. It is also examined if the recycled concrete is technically sustainable and if the workability is good enough for using in load bearing structures. Different properties are studied such as compressive strength, particle distribution, water absorption and workability to achieve equivalent results as the reference concrete. The result obtained in this study shows that it is possible to recycle concrete by replacing aggregates to 100 % in new concrete. Workability is good in several tests, but it should be improved to achieve the same workability as the reference concrete. The reference concrete's compressive strength is 59 MPa and the best compressive strength obtained for recycled concrete is 57.2 MPa. This indicates positive results and the recycled concrete in this study can replace ordinary concrete in a load bearing construction.

    Download full text (pdf)
    fulltext
  • 43.
    Rorig-Dalgaard, I.
    et al.
    DTU.
    Svensson, Staffan
    University of Borås, Faculty of Textiles, Engineering and Business.
    High accuracy calibration of a dynamic vapor sorption instrument and determination of the equilibrium humidities using single salts2016In: Review of Scientific Instruments, ISSN 0034-6748, E-ISSN 1089-7623, Vol. 87, no 5Article in journal (Refereed)
    Abstract [en]

    We present a procedure for accurately calibrating a dynamic vapor sorption (DVS) instrument using single salts. The procedure accounts for and tailors distinct calibration tests according to the fundamental properties of each salt. Especially relevant properties influencing the calibration are the heat of solution, heat of condensation, and the kinetics connected to the salt phase transition, as these influence the microclimate surrounding the salts during calibration. All these issues were dealt with to obtain precise calibration results. The DVS instrument comprises two control modes to generate and measure the relative humidity (RH). Both control modes were separately examined and combined to overcome the shortcomings of each of the two control modes and thereby obtain the most accurate results. Repeated calibration testing with the single salts (LiCl, MgCl2, Mg(NO3)2, NaCl, and KNO3) enables five discrete sorption isotherm measurements within the range of 11%-93%RH. The equilibrium RH of the solution for LiCl, MgCl2, Mg(NO3)2, NaCl, and KNO3 was determined with a standard deviation of 0.06%-0.15% (0.45% for KNO3) RH. By comparing the measured calibration values with the well-known equilibrium RH of each salt solution, the presented method's results are both accurate with significant agreement and precise with small variation.

  • 44.
    Sadagopan, Madumita
    University of Borås, Faculty of Textiles, Engineering and Business. Högskolan i Borås.
    Life Cycle Assessment: Concrete Hollow Core Slab2013Report (Other (popular science, discussion, etc.))
    Abstract [en]

    A report about the environmental impacts involved in the use of recycled concrete waste as aggregates in new concrete. The environmental impacts were assessed based on a simple LCA using a prefabricated concrete producing company in Sweden as a case study. The results of the LCA revealed that major environmental impacts arised from the crushing and extraction processes as these were diesel fuel intensive. Comparatively, the use of recycled concrete as aggregates in new concrete saw a reduction in the environmental impacts as the need for extraction had reduced with the introduction of recycled aggregates. 

    Download full text (pdf)
    LCA- concrete recycling
  • 45.
    Sadagopan, Madumita
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Malaga, Katarina
    University of Borås, Faculty of Textiles, Engineering and Business.
    Nagy, Agnes
    University of Borås, Faculty of Textiles, Engineering and Business.
    A modified pycnometer method to determine the water absorption of combined crushed concrete aggregate fractions2019In: International Conference on Sustainable Materials, Systems and Structures (SMSS2019): Novel Methods for Characterization of Materials and Structures / [ed] Gabrijel I, Grosse C, Skazlić M, 2019, p. 286-292Conference paper (Refereed)
    Abstract [en]

    Crushed Concrete Aggregates (CCA) as fine and coarse aggregates in new concrete helps achieve closed-loop recycling. Assessment of workability, mechanical properties and durability of concrete demands knowledge of the water absorbed by the CCA. The EN 1097-6standard method is difficult to execute due to the presence of entrapped air and CCAsedimentation while performing water absorption experiment for fine CCA. Additionally, the assessment of Saturated Surface Dry (SSD) state seems operator specific and nonreproducible;moreover, giving water absorption measurement only at 24 hours. However, findings from this paper show measurements at 15 minutes is influential for concrete workability. The modified pycnometer method analyses the water absorption of a combined fraction consisting of coarse and fine CCA as proportioned in a given concrete recipe. Furthermore, sedimentation and entrapped air are prevented by pre-soaking the CCA in a solution of distilled water and poly-carboxylate based superplasticizer before commencing the experiment. Ultimately, the combined fraction is drained to SSD condition by vacuum filtration, which is easy to handle by professional operators. In this way, the water absorption development is measured from starting point to 24 hours for the combined fraction to determine the appropriate water amount to saturate CCA during concrete mixing.

    Download full text (pdf)
    fulltext
  • 46.
    Sadagopan, Madumita
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Malaga, Katarina
    University of Borås, Faculty of Textiles, Engineering and Business.
    Nagy, Agnes
    University of Borås, Faculty of Textiles, Engineering and Business.
    Modified pycnometer method to measure the water absorption of crushed concrete aggregates2020In: Journal of Sustainable Cement-Based Materials, ISSN 2165-0373, E-ISSN 2165-0381Article in journal (Refereed)
    Abstract [en]

    The water absorption of crushed concrete aggregates (CCA) has a major influence on concrete workability. In order to determine the water absorption of CCA, a more porous material than natural aggregates, modifications to the standard pycnometer method are proposed as: (1) Water absorption is measured on a combined fraction CCA consisting of fine and coarse aggregates proportioned according to concrete recipe. (2) The CCA is pre-processed to mitigate sedimentation. (3) Saturated surface dry condition of aggregate is assessed by vacuum filtration and ocular technique. Water absorption development is measured at 0 min, 15 min, and 24 h. About 90% of the 24-h water absorption occurs in 15 min, value which is introduced in the concrete recipe; slump flow and compressive strength are determined. The modified pycnometer method shortens test duration, is operator insensitive and gives reliable water absorption result for CCA leading to concrete workability fitting industrial application.

  • 47.
    Sadagopan, Madumita
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Nagy, Agnes
    University of Borås, Faculty of Textiles, Engineering and Business.
    Malaga, Katarina
    University of Borås, Faculty of Textiles, Engineering and Business.
    RE:Concrete- Study on Concrete Recycling in Sweden2017In: Nordic Concrete Research: Proceedings of XXIIIth Nordic Concrete Research Symposium Aalborg, Denmark 2017 / [ed] Marianne Tange Hasholt, Oslo, 2017Conference paper (Refereed)
    Download full text (pdf)
    fulltext
  • 48.
    Sadagopan, Madumita
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Nagy, Agnes
    Malaga, Katarina
    University of Borås, Faculty of Textiles, Engineering and Business.
    RE:Concrete- Study on Recycling of Concrete in Sweden2017In: Nordic Concrete Research, ISSN 0800-6377, no 56, p. 83-99Article in journal (Refereed)
    Abstract [en]

    Sweden’s concrete waste is recycled for use in low-utility purposes such as in the construction of sub-bases in roads but hardly as aggregates in new concrete. To analyse the potential for high-utility recycling, a literature study was conducted on the regulatory instruments, building standards, production and properties of recycled concrete aggregates and the recycled aggregate concrete for Sweden and European countries. Results urge statistics to quantify recycled concrete; regulations like source sorting of waste and selective demolition could potentially optimize recycled aggregate production. Also, the compressive strength of recycled concrete aggregate’s parent concrete influences the properties of the new concrete.

    Download full text (pdf)
    fulltext
  • 49.
    Sandberg, Erik
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business. Linköping University.
    Pal, Rudrajeet
    University of Borås, Faculty of Textiles, Engineering and Business.
    Dynamic capabilities in the used clothing supply chain2017In: Data Driven Supply Chains / [ed] K.S. Pawar, A. Potter and A. Lisec, Nottingham, UK, 2017, p. 730-737Conference paper (Refereed)
    Abstract [en]

    The purpose of this paper is to identify the dynamic capabilities present - and the ones missing - in used clothing supply chains. Such capabilities ensure ability to cope with the rapidly changing conditions in the used clothing supply chain, by creating, modifying and renewing the existing resource base. Particular empirical focus in the paper is given to fashion retailers and charities operating on the Swedish market. Based on the dynamic capabilities classes of sensing, seizing and reconfiguring, empirical data exemplify contemporary dynamic capabilities present among these actors. Theory on dynamic capabilities has to a very limited extent been applied in a reverse supply chain setting. The used clothing supply chain offers an interesting case for the exploration of the dynamic capabilities needed in such a reverse supply chain environment.

  • 50.
    Svensson, Pauline
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Lostin, Fanny
    University of Borås, Faculty of Textiles, Engineering and Business.
    Arbetsmiljöattityder hos underentreprenörer: agerande och attityder på arbetsplatser2017Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In collaboration with NCC, a study has been made. The study´s intention is to investigate the reason why the subcontractors don´t always follow NCC´s public order and safety rules. The study also explores how the attitude to the rules of the subcontractors changes, depending on how the rules are followed by the employees on each project. It will also cover how subcontractors act when employees put themselves or others at risk at workplaces.A comprehensive literature study has been made, where relevant material has been used to expand the knowledge and to function as the foundation for a quantitative method. Information was collected through email contact with the subcontractors contact persons and in the two surveys where the supervisors of NCC and subcontractors participated.Suggestions for measures have been discussed based on the result and comparison with the literature. These suggestions may help NCC to continue to create a better working environment and improve the work against their vison.In the study, it is clear that there are many factors that influence the attitude towards the public order and safety rules of the subcontractors. Furthermore the cooperation between all the parties that are involved at the workplaces needs to improve, in order to achieve a safe and secure working environment.

    Download full text (pdf)
    fulltext
12 1 - 50 of 59
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • harvard-cite-them-right
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf