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  • 51. Ammilon, Henrik
    Rum för anpassning: En undersökning av skolbiblioteksrummet på en F-9 grundskola2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This bachelor thesis examines the access and pedagogic roles of the school library room at a primary school with students in preschool class up to ninth grade. As of 2017 the school library has new premises with the goal of making the school library more available for all students at the school. The purpose of the study was to gain knowledge about primary school students access to the library room, its role and how the room is used for pupils learning by teachers. The method used was semi-structured interviews with the librarian and two teachers from each of the three primary school stages. In the study I adapted Elisabeth Tallaksen Rafste's theory of school libraries as social systems and structures. I related to the influence of teachers and libraries on how they affect the role of the library room through their view of the library. The study shows that the library room is kept in high regard by the teacher, as well as being more available to the pupils than before. Due to circumstances at the school, only the older student had individual access to the library while the younger had to be accompanied by a teacher. None of the teachers use the room for pedagogic activities, though some see pedagogic roles in the room, such as student learning through social interactions. The room has both a learning and leisure role. An unexpected result was the teachers appreciation for and close bond to the librarian.

  • 52. Anderberg, Sebastian
    et al.
    Fernström, Johan
    Profilering på webben: En studie om internetanvändares inställning till datainsamling2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Data collection is a topic that affects every person that uses various Internet services and has been a current topic the past year among individuals and the actors that collects data. It concerns actors collecting and storing personal data from users that either have or have no knowledge about it. The Cambridge Analytica-scandal which affected over 50 million users on Facebook initiated a discussion which concerns if data collection is right or wrong, but also how actors handle personal data and how it affects the integrity. With the enforcement of General Data Protection Regulation GDPR the 25th of May which will affect actors involved with data collection or usage. The regulation is about how actors can store data and use it. The regulation will also provide users the right to demand to be removed from actor’s databases. There has been some research on opinions among users concerning data collection, but not how they can be different with the knowledge of GDPR. So how is the attitude towards data collection among internet users? Do internet users apply services to prevent data collection? Do they even know about GDPR? A survey was performed to answer these questions and where the answers were put together in the form of statistic data. The purpose of this pre-study is to examine what the attitude is towards data collection. The study also examines how technical knowledge, age and knowledge about GDPR can be related to answers given in the survey. Based on the empirical data and identified relations between measurable variables the study’s conclusions can be made: The attitude to data collection is significant between users who have knowledge about GDPR and those how don´t have. Another conclusion is that the attitude varies between ages, internet habit and which actors who provides the data.

  • 53. Anderson, D.
    et al.
    Andersson, F.
    Andersson, Peter
    University of Borås, School of Engineering.
    Billander, A.
    Desaix, Mats
    University of Borås, School of Engineering.
    The optimal journey from A to B2008In: American Journal of Physics, ISSN 0002-9505, E-ISSN 1943-2909, Vol. 76, no 9, p. 863-866Article in journal (Refereed)
    Abstract [en]

    How fast can you comfortably travel between two points A and B? This question is formulated as a minimization problem of a functional where the discomfort is quantified in terms of the integral of the square of the acceleration between A and B. The problem is solved in terms of the corresponding Euler-Lagrange equation and approximately using a direct variational approach based on trial functions and Ritz optimization. The main purpose of the analysis is to introduce undergraduate students to variational calculus in an interesting and pedagogical way.

  • 54. Anderson, D
    et al.
    Desaix, Mats
    University of Borås, Faculty of Textiles, Engineering and Business.
    Introduction to direct variational and moment methods and an application to the Child–Langmuir law2015In: European journal of physics, ISSN 0143-0807, E-ISSN 1361-6404, Vol. 36, no 6Article in journal (Refereed)
    Abstract [en]

    A short introduction is given of direct variational methods and its relation to Galerkin and moment methods, all flexible and powerful approaches for finding approximate solutions of difficult physical equations. A pedagogical application of moment methods is given to the physically and technically important Child–Langmuir law in electron physics. The analysis is shown to provide simple, yet accurate, approximate solutions of the two-dimensional problem (a problem which does not allow an exact analytical solution) and illustrates the usefulness and the power of moment methods.

  • 55. Anderson, D.
    et al.
    Desaix, Mats
    University of Borås, School of Engineering.
    Lisak, M.
    Rasch, J.
    Galerkin approach to approximate solutions of some nonlinear oscillator equations2010In: American Journal of Physics, ISSN 0002-9505, E-ISSN 1943-2909, Vol. 78, no 9, p. 920-924Article in journal (Refereed)
    Abstract [en]

    An analysis based on the Galerkin method is given of some nonlinear oscillator equations that have been analyzed by several other methods, including harmonic balance and direct variational methods. The present analysis is shown to provide simple yet accurate approximate solutions of these nonlinear equations and illustrates the usefulness and the power of the Galerkin method. (C) 2010 American Association of Physics Teachers.

  • 56.
    Anderson, D.
    et al.
    Chalmers University of Technology.
    Desaix, Mats
    University of Borås, Faculty of Textiles, Engineering and Business.
    Nyqvist, R.
    Chalmers University of Technology.
    The least uncomfortable journey from A to B2016In: American Journal of Physics, ISSN 0002-9505, E-ISSN 1943-2909, Vol. 84, no 9, p. 690-695Article in journal (Refereed)
    Abstract [en]

    A short introduction is given about direct variational methods and their relation to Galerkin and moment methods, all flexible and powerful approaches for finding approximate solutions to difficult physicalequations. An application of these methods is given in the form of the variational problem of minimizing the discomfort experienced during different journeys, between two fixed horizontal points while keeping the travel time constant. The analysis is shown to provide simple, yet accurate, approximate solutions of the problem and illustrates the usefulness and the power of direct variational and moment methods. It also demonstrates the problem of a priori assessing the accuracy of the approximate solutions and illustrates that the variational solution does not necessarily provide a more accurate solution than that obtained by moment methods.

  • 57.
    Anderson, Dan
    et al.
    Chalmers .
    Desaix, Mats
    University of Borås, Faculty of Textiles, Engineering and Business.
    Approximate solution of a Thomas-Fermi model equation for bulk self-gravitating stellar objects in two dimensions2017In: European journal of physics, ISSN 0143-0807, E-ISSN 1361-6404, Vol. 38, p. 1-8, article id 015406Article in journal (Refereed)
    Abstract [en]

    Direct variational methods are used to find simple approximate solutions of the Thomas–Fermi equations describing the properties of self-gravitating radially symmetric stellar objects both in the non-relativistic and ultra-relativistic cases. The approximate solutions are compared and shown to be in good agreement with exact and numerically obtained solutions.

  • 58. Andersson, Adam
    et al.
    Syldevik, Christoffer
    Hur påverkas systemutvecklingsprocessen av implementeringen av GDPR2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    On May 25th 2018 a new general data protection regulation called GDPR took effect. The regulation contains rules regarding usage, storage and handling of data from individuals resident within The European Union. The new regulation caused big headlines regarding the impact GDPR would have on the affected enterprises and organizations. One aspect that hasn’t been mentioned considerably is how GDPR has and will affect the system development process. The difficulty with implementing GDPR has shown to have its origin in the fact that the regulation is fairly new which means that it’s still ambiguous and difficult to apply. That means that there has been room for different takes on GDPR and its rules which has contributed to various opinions on how GDPR should be implemented.

    The purpose of this thesis was to study how the implementation of GDPR has affected the system development process among enterprises and organizations. The method that has been used in the thesis is a qualitative interview study of two enterprises. The acquired data have been collected mainly from four interviewing persons, two from each enterprise. The data collected from the interviews has been analyzed with the method grounded theory. The conclusion of the thesis is that the system development process has been affected by the implementation of GDPR. The regulation is however not believed to affect the enterprises to the extent that any extensive restructuring has been necessary. Based on the result from the interviews it is rather believable that GDPR actually had a positive effect among the enterprises. The thesis also resulted in a model which illustrates the system development process and the aspects of GDPR considered to have a substantial effect.

  • 59.
    Andersson, Björn
    et al.
    University of Borås, Faculty of Librarianship, Information, Education and IT.
    Eriksson, Felix
    University of Borås, Faculty of Librarianship, Information, Education and IT.
    Designförslag på belöningsfunktioner för självkörande bilar i TORCS som inte krockar2018Independent thesis Basic level (degree of Bachelor), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    For this study TORCS (The Open Racing Car Simulator) have been used, since it is an interesting game to create self-driving cars in. This is due to the fact there is nineteen different sensors available that describes the environment for the agent. The problem for this study has been to identify what sensor can be used in a reward function and how should this reward function be implemented. The study have been utilizing a quantitative experimental method where the research questions have been: How can a reward function be designed so that an Agent can maneuver in TORCS without crashing and at the same time have a consistent result

    The quantitative experimental method was picked since the writer’s hade to design, implement, conduct experiment and evaluate the result for each reward function. Fifteen experiments have been conducted over twelve reward functions on two different maps: E-Track 5 (E-5) and Aalborg. Each of the twelve reward function conducted an experiment on E-5, where the three once with the best result: Charlie, Foxtrot and Juliette conducted an additional experiment on Aalborg. The test on Aalborg was conducted in order to prove if the reward function can maneuver on more than one map. Juliette was the only reward function that managed to complete a lap on both E-5 and Aalborg without crashing. Based on the conducted experiment the conclusion that Juliette fulfills the research question was made, due to it being capable of completing both maps without crashing and if it succeeded it gets a consistent result. Therefor this study has succeeded in answering the research question.

  • 60.
    Andersson, Bo
    et al.
    Lunds Universitet.
    Hedman, Jonas
    University of Borås, School of Business and IT.
    Developing m-Services: Lesson Learned from a Developers Perspective2007Conference paper (Refereed)
  • 61. Andersson, Bo
    et al.
    Hedman, Jonas
    University of Borås, School of Business and IT.
    Developing M-Services: Lessons Learned From the Developers Perspective.2007In: Communications of the Association for Information Systems, ISSN 1529-3181, E-ISSN 1529-3181, Vol. 20, no 38, p. 605-620Article in journal (Refereed)
    Abstract [en]

    In recent years the Swedish Police Force (SPF) have encountered greater demands on availability and 24/7 services when dealing with errands that are regarded as low priority compared to regular police work, e.g. collecting tips from the public. One attempt to meet these increasing demands was the development of a mobile communications platform that allowed the public to communicate easily with the SPF using their own mobile phones by sending SMS and MMS. The focus of this paper is on the early phases of development of this m-service, in particular, on the specific technical issues such as interoperability and standards used by the actors on the scene affecting the development of mobile information systems. The learning experiences are as follows: First, mobile communication platforms have a large potential for contributing to the field of emergency management information systems since they can be based on open and nationally accepted standards. Second, global and national standards for sending multimedia messages are not always truly standardized. Operators and mobile phone manufacturers make minor alterations and interpretations of the standard and thereby some of the benefits found in standards disappear. Third, when developing mobile information systems we suggest and recommend that the analysis phase should be enhanced compared to traditional system development, and it should address the interoperability between mobile phones on one hand and operators on the other hand.

  • 62.
    Andersson, Bo
    et al.
    Lunds Universitet.
    Hedman, Jonas
    University of Borås, School of Business and IT.
    Diffusion of Advanced Mobile Services: A Survey of Large Swedish Firms2007Conference paper (Refereed)
  • 63. Andersson, Bo
    et al.
    Hedman, Jonas
    University of Borås, School of Business and IT.
    Lind, Mikael
    University of Borås, School of Business and IT.
    The Adoption of Advanced Mobile Services2007In: Expanding the Knowledge Economy: Issues, Applications, Case Studies. Volume 4, Part 1. / [ed] Paul Cunningham, Miriam Cunningham, IOS Press , 2007, p. 1508-1514Chapter in book (Other academic)
  • 64.
    Andersson Hagiwara, Magnus
    et al.
    University of Borås, School of Health Science.
    Suserud, Björn-Ove
    University of Borås, School of Health Science.
    Andersson-Gare, Boel
    Sjöqvist, Bengt-Arne
    Henricson, Maria
    Jonsson, Anders
    University of Borås, School of Health Science.
    The effect of a Computerised Decision Support System (CDSS) on compliance with the prehospital assessment process: results of an interrupted time-series study2014In: BMC Medical Informatics and Decision Making, ISSN 1472-6947, E-ISSN 1472-6947, Vol. 14, no 70Article in journal (Refereed)
    Abstract [en]

    BACKGROUND:Errors in the decision-making process are probably the main threat to patient safety in the prehospital setting. The reason can be the change of focus in prehospital care from the traditional "scoop and run" practice to a more complex assessment and this new focus imposes real demands on clinical judgment. The use of Clinical Guidelines (CG) is a common strategy for cognitively supporting the prehospital providers. However, there are studies that suggest that the compliance with CG in some cases is low in the prehospital setting. One possible way to increase compliance with guidelines could be to introduce guidelines in a Computerized Decision Support System (CDSS). There is limited evidence relating to the effect of CDSS in a prehospital setting. The present study aimed to evaluate the effect of CDSS on compliance with the basic assessment process described in the prehospital CG and the effect of On Scene Time (OST).METHODS:In this time-series study, data from prehospital medical records were collected on a weekly basis during the study period. Medical records were rated with the guidance of a rating protocol and data on OST were collected. The difference between baseline and the intervention period was assessed by a segmented regression.RESULTS:In this study, 371 patients were included. Compliance with the assessment process described in the prehospital CG was stable during the baseline period. Following the introduction of the CDSS, compliance rose significantly. The post-intervention slope was stable. The CDSS had no significant effect on OST.CONCLUSIONS:The use of CDSS in prehospital care has the ability to increase compliance with the assessment process of patients with a medical emergency. This study was unable to demonstrate any effects of OST.

  • 65. Andersson, Julia
    et al.
    Kjellgren, Lucas
    Svensson, Isac
    Anskaffning, värdering och utvärdering av IT-investeringar2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Almost all businesses are affected by the current trend of digitalization. To stay competitive, they need to find the right balance between innovation and exploitation. IT-investments could result in increased efficiency, as well as other competitive advantages. To be sure that the IT- investments contributes to these expected advantages, the businesses should evaluate their IT- investment. For the systems to continue to create value and to avoid the use of outdated systems, it’s also of major importance the IT-systems are assessed at a regular basis.

     

    The aim of this thesis is to investigate on what basis IT-investments are made, as well as what approaches organizations tend to adopt while valuating and evaluating their systems. The study was conducted through a qualitative method and the data-collection was made through semi- structured interviews with respondents from 6 different businesses who occupied positions such as chief information officer, chief digital officer and project manager. The part of empirics and analysis explains the results of the study and compares the empirical data with theory.

     

    The result of the study shows that IT-investments often are made to match the digitalization of society and that such investments are affected by factors such as competition and customer’s requests. The result also reveals that acquisition, through Business Case, often is made to decide whether the IT-investment should carry on or discontinue. Furthermore, the result shows that the work with system management often is conducted in a controlled and thoroughly way, but that the work with evaluation isn’t sufficiently comprehensive; which the businesses is aware of and wishes to do in greater extent.

  • 66. Andersson, L
    et al.
    Petersen, G
    Johnson, P
    Ståhl, Fredrik
    University of Borås, School of Health Science.
    A web tool for finding gene candidates associated with experimentally induced arthritis in rat2005In: Arthritis Research & Therapy, ISSN 1478-6354, E-ISSN 1478-6362, Vol. 7, no 3, p. R485-R492Article in journal (Refereed)
    Abstract [en]

    Rat models are frequently used for finding genes contributing to the arthritis phenotype. In most studies, however, limitations in the number of animals result in a low resolution. As a result, the linkage between the autoimmune experimental arthritis phenotype and the genomic region, that is, the quantitative trait locus, can cover several hundred genes. The purpose of this work was to facilitate the search for candidate genes in such regions by introducing a web tool called Candidate Gene Capture (CGC) that takes advantage of free text data on gene function. The CGC tool was developed by combining genomic regions in the rat, associated with the autoimmune experimental arthritis phenotype, with rat/human gene homology data, and with descriptions of phenotypic gene effects and selected keywords. Each keyword was assigned a value, which was used for ranking genes based on their description of phenotypic gene effects. The application was implemented as a web-based tool and made public at http://ratmap.org/cgc. The CGC application ranks gene candidates for 37 rat genomic regions associated with autoimmune experimental arthritis phenotypes. To evaluate the CGC tool, the gene ranking in four regions was compared with an independent manual evaluation. In these sample tests, there was a full agreement between the manual ranking and the CGC ranking for the four highest-ranked genes in each test, except for one single gene. This indicates that the CGC tool creates a ranking very similar to that made by human inspection. The exceptional gene, which was ranked as a gene candidate by the CGC tool but not in the manual evaluation, was found to be closely associated with rheumatoid arthritis in additional literature studies. Genes ranked by the CGC tools as less likely gene candidates, as well as genes ranked low, were generally rated in a similar manner to those done manually. Thus, to find genes contributing to experimentally induced arthritis, we consider the CGC application to be a helpful tool in facilitating the evaluation of large amounts of textual information.

  • 67. Andersson, Ludvig
    et al.
    Alexandersson, Robin
    Lien, Tom
    Den moderna banken: Tillämpning av Artificiell Intelligens i bankverksamhet2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Artificial Intelligence (AI) as a growing digitization technique appears in many contexts as something new and foreign. AI is considered by many as the driving force in the future of digitalization. The finance industry is one of the industries that may be affected since they already have several digitization tools today. Banks have an important function in our society and therefore it’s important for companies and also consumers, to understand what the application of AI can offer.

     

    The purpose of this study is to generate a greater understanding of how Artificial Intelligence (AI) is being used in Swedish banks today, which ethics- and regulatory aspects that can affect the implementation of AI and how banks take the future use of AI in consideration. The study is based on a qualitative method where five explorative and semi structured interviews with different banks have been conducted. Respondents consists of two niche banks and three more established banks where 35-60 minutes interviews have been done while the respondents explained how they use AI in daily activities, how they consider ethical aspects regarding the use of AI and how they see the future use of AI in daily activities. This study has come to the conclusion that the banks use AI in different ways and that they value AI differently. Well established banks work more with IT-support for the organization where support is of great importance while the niche banks works with AI from a more holistic perspective with credit- and loan processes in focus. It appears that banks also want to use AI in consideration of money laundering and compliance. This study also presents how banks take the law, ethical aspects and work environment in consideration and how these factors is affected or not affected with the application of AI.

  • 68. Andersson, Magnus
    et al.
    Hjalmarsson, Anders
    University of Borås, School of Business and IT.
    Avital, Michel
    Peer-to-Peer Service Sharing Platforms: Driving Share and Share Alike on a Mass-Scale2013Conference paper (Refereed)
    Abstract [en]

    The sharing economy has been growing continuously in the last decade thanks to the proliferation of internet-based platforms that allow people to disintermediate the traditional commercial channels and to share excess resources and trade with one another effectively at a reasonably low transaction cost. Whereas early peer-to-peer platforms were designed to enable file sharing and goods trading, we recently witness the emergence of a new breed of peer-to-peer platforms that are designed for ordinary service sharing. Ordinary services entail in tangible provisions and are defined as an economic activity that generates immaterial benefits and does not result in ownership of material goods. Based on a structured analysis of 41 internet-based rideshare platforms, we explore and layout the unique characteristics of peer-to-peer service sharing platforms based on three distinct temporal patterns that entail specific consequences for platform use as well as provide insights about their overall design imperative.

  • 69. Andersson, Magnus
    et al.
    Lindgren, Rikard
    University of Borås, School of Business and IT.
    Inscribing Interpretive Flexibility of Context Data in Ubiquitous Computing Environments: An Action Research Study of Vertical Standard Development.2009In: International Journal of Advanced Pervasive and Ubiquitous Computing, ISSN 1937-965X, E-ISSN 1937-9668, Vol. 1, no 2, p. 1079-1097Article in journal (Refereed)
    Abstract [en]

    Ubiquitous computing environments grant organizations a multitude of dynamic context data emanating from embedded and mobile components. Such data may enhance organizations’ understanding of the different contexts in which they act. However, extant IS literature indicates that the utility of context data is frequently hampered by a priori interpretations of context embodied within the acquiring technologies themselves. Building on a 5-year canonical action research study within the Swedish transport industry, this paper reports an attempt to shift the locus of interpretation of context data by rearranging an assemblage of embedded, mobile, and stationary technologies. This was done by developing a vertical standard as a means to inscribe interpretive flexibility of context data. With the objective to extend the current understanding of how to enable cross-organizational access to reinterpretable context data, the paper contributes with an analysis of existing design requirements for context-aware ecosystems. This analysis reveals the complexity of accomplishing collaborative linkages between socio-technical elements in ubiquitous computing environments, and highlights important implications for research and practice.

  • 70. Andersson, Sandra
    Lösenordsovanor – åldersrelaterat?2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This study aimed primarily at investigating if the role of age was important regarding password management and password habits of different users. Despite extensive research in password management, the problem remains that users create insecure passwords, leaving personal information and systems vulnerable to attackers. In order to examine users’ different password habits in different age categories, a multi-strategy study was conducted, which consisted of two methods, with both a questionnaire and interviews. The areas discussed in the study were whether the age was important on the user's password habits and the knowledge different users had about attacker's different methods. The study also discusses how the user thought about the creation of passwords in comparison with recommendations from existing studies of how a secure password is created and how the user remembered their password. The results of the surveys show no correlation between the user's age and password habits. However, a possible solution to the problem is finally discussed, as both previous studies and this study proves users today lack knowledge of secure passwords and lack of password habits.

  • 71.
    Andrén, Erik
    et al.
    University of Borås, Faculty of Librarianship, Information, Education and IT.
    Petersson Sällberg, Fanny
    University of Borås, Faculty of Librarianship, Information, Education and IT.
    Dokumentdatabaser i praktiken: En studie om användandet av MongoDB2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Informationshantering med dokumentdatabaser har ökat i omfattning de senaste åren och tekniken finns nu representerad bland de fyra mest använda databaserna i världen. Den här studien undersöker användningen av dokumentdatabaser samt vad som kan ligga bakom valet att börja använda dem. För att studera användandet av dokumentdatabaser har den mest populära dokumentdatabasen, MongoDB, valts ut som studiens undersökta fall. Studien har genomförts genom att studera litteratur och publicerat material om databastekniken samt genom att utföra intervjuer med användare av denna. MongoDB har beskrivits som lämplig för användning vid hantering av olika typer av applikationer eller system med ostrukturerad data och för användning i skalbara miljöer. Den har även beskrivits som lättillgänglig och enkel att lära sig då den har en gratisversion och mycket manualer på internet. Studien har visat att dokumentdatabaser kan användas för att hantera information i avgränsade miljöer så som mobil- eller webbapplikationer men även i skalbara system med stora mängder data. Dokumentdatabaser har visat sig motiveras för användning tack vare sin möjlighet att hantera flexibilitet i datastruktur och datavolym. För att kunna erbjuda flexibilitet kring struktur och volym har vissa avkall gjorts gällande transaktionssäkerhet och dataintegritet för dokumentdatabaser. Detta har kunnat påvisas som de främsta motiveringarna för användning av dokumentdatabaser men också som en av de främsta motiveringarna emot att använda dem.

  • 72. Aneja, Arun
    et al.
    Pal, Rudrajeet
    University of Borås, Swedish School of Textiles.
    Militky, Jiri
    Kupka, Karel
    Kremenakova, Dana
    Torstensson, Håkan
    University of Borås, Swedish School of Textiles.
    Textile Thru the Looking Glass: A Novel Perspective2013Conference paper (Other academic)
    Abstract [en]

    Today, textiles and fiber science in US, Europe and Japan from its once lofty perch in the global economy, stands in stark contrast to its preeminent position of few decades ago. Its influence on the society as a whole has eroded enormously. Many of the synthetic fiber products that once fuelled the rapid growth of the industry have become mature commodity products now characterized by low growth and lower profit margins. To add to the current dilemma, organizational ‘health’ and growth processes are constantly threatened in this era of turbulence. Thus the drive for survival and success has translated, in recent times, to quest for resiliency – to survive and thrive in turbulences. On the other hand, most managers and academicians agree that innovation ensures superior organizational performance while recent research has shown that most resilient companies can dynamically orchestrate diverse innovation strategies. Resiliency in such a context has become a prerequisite for a sustained long term business prosperity fuelled by diverse technological innovations. This has intensified the organization’s search for differentiated products and services, processes, business models, technology, strategies etc. pushing firms to gain competitive advantage and also to develop new knowledge and innovation performance to drive sustainable growth. Organizations now follow multiple innovation strategies to pragmatically devise their innovation repertoire for delivering growth, hence, success in turbulent times while emphasizing resiliency. What does the future hold and how can we reverse the trend to achieve and sustain the impressive credentials of the past? To understand the significance of what the future may hold, and to reverse the downward spiral of the industry, we must evaluate the successes and failures of the past and come to grips with rapid global changes and turbulences currently underway. The present article seeks to explore such an inexorable phenomenon of quantifying and correlating innovation and business resiliency over a time line, from the annual financial data of 35 healthy and unhealthy companies along with 5 textile companies over a span of few decades. These are then extrapolated with certain predictive capabilities to suggest future trends and strategies for the textile companies. Learning from these companies, if adopted, will yield capacity to transform the scenario. Assessments and classification of the economic health of a company is typically made based on some quantity derived from selected indices, such as Altman’s Z-score. These methods can describe an instantaneous status, or a “time snap” of an economical subject but lack information about the time-dynamics of the assessment, which is important for investors, shareholders and the management. We suggest using historical data to estimate current trends in the form of the first and second time-derivative of the appropriate quantity in the time domain. This new information is independent on the quantity itself and beside more precise description can be used as new predictor to improve effectiveness of classification of successful and unsuccessful subjects. This approach is further discussed in this paper.

  • 73.
    Anic, Filip
    et al.
    University of Borås, Faculty of Librarianship, Information, Education and IT.
    Sahlqvist, Henrik
    University of Borås, Faculty of Librarianship, Information, Education and IT.
    Fyra prediktionsmetoder som skrivhjälpmedel för personer med kognitiv funktionsnedsättning2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    People with cognitive disabilities can have various difficulties with typing on mobile devices(smartphones or tablets). The difficulties they face could be spelling and writing in normal typing speed. This study has compared different writing aids against no writing aid in the means to evaluate which ones can help improve typing speed and spelling. The study has also evaluated what people with cognitive disabilities think about these type of writing aids to help future development of software.

    The writing aids used in the study were;

    ● Word prediction

    ● Word prediction with a easy dictionary

    ● Keyboardprediction

    ● Word prediction combined with keyboardprediction

    The study answered two questions. The first question was what people with cognitive disabilities thought about the writing aids used in the study. The second answered whether the writing aids improved test participants writing speed, keystroke savings and spelling. To answer these questions a withinsubject design was used. The data collected was quantitative, where the first question collected data through questionnaires while the other collected via tests that were available via an application. The goal of this study was to test four different writing aids and compare them against writing without aid to show which can contribute most to the increase in write speed, to the reduction of keystrokes and reduction in typos. To reach these targets we used a withinsubject design, meaning that all participants tested all writing aids. Participants were given a few short questions on the writing aids after the tests through surveys. Collection of data was through a quantitative approach. The results showed that all writing aids increased writing speed, decreased keystrokes and improved spelling. Word prediction with an easy dictionary increased writing speed the most, to 9,87 words per minute, compared to results without prediction which had 7.67 words per minute. Word prediction had the most keystroke savings, with a savings amount of 14,04%. There were very few typing errors for all prediction methods, but they all had better results than without prediction which had the most errors per person. However, only some of these results could be shown with statistical significance. This paper can help developers who develop write aids for people with cognitive disabilities to determine what type of writing aid they may invest in development.

  • 74.
    Appiah-Kubi, Ohene
    et al.
    University of Borås, Faculty of Librarianship, Information, Education and IT.
    Faheem, Muhammad
    University of Borås, Faculty of Librarianship, Information, Education and IT.
    Impact of Technological Devices on Mathematical Skills: A Technological Adaption Perspective on Mathematics Education2017Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    We live in a world where the use of technology plays a key role in our daily activities. Many professions rely on the use of technology to enable them to provide a better, faster, and the best of services to their clients. Due to the numerous benefits technology provides, there has been the need for its adoption into the educational sector to make learning easier for students. Through technology adoption students and teachers can get easy access to online resources. Students can study at their own pace and share resources with their peers. Despite the fact that the use of technological devices in the educational sector comes with some benefits, its introduction into the classroom at the elementary stage, especially in solving mathematics problems, has raised several controversies among stakeholders in the educational sector. There are those who are of the view that, the use of technological devices for computational purposes at the elementary stage will cause students to become reliant on them without using their mind to solve simple mathematical problems. Other stakeholders, however, think otherwise, they believe the use of technological devices used in teaching mathematics at the elementary school enhances student problem-solving skills. In this study, we determined the impact of technology adoption on mathematical skills in elementary schools in Pakistan. This research was conducted using semi-structured interviews and experiment between two elementary schools in Pakistan where one school believes in the adoption of technology in teaching and learning mathematics and the other school does not believe in the adoption of technology in teaching and learning mathematics. Students were chosen from grade 8 who were within the same age group and living within the same community for this study because they are within a transition stage from elementary school to upper secondary school and it is important to know how the use and non-use of technology have affected their mathematical capabilities and whether it was important for schools to adopt or not to adopt the use of technological devices in mathematics instructions. The results of the study indicate that the use of technological devices in solving mathematics problems at the elementary school has a greater negative impact than a positive impact on student computational skills and this affects the adoption of technological devices in mathematics instructions at most elementary school in Pakistan. The impact of technology plays a key role in technology adoption for potential adopters in developing countries and for this reason when potential adopters do not see the positive impact of technology from those using them; it serves as a barrier for the potential adopter.

  • 75.
    Arja, Mina
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Akbar Mirzaei, Ali
    University of Sistan and Baluchestan, Zahedan 98135-674, Iran.
    Mahmood Davarpanah, Abdol
    University of Sistan and Baluchestan, Zahedan 98135-674, Iran.
    Masoud Barakati, Seyed
    University of Sistan and Baluchestan, Zahedan 98135-674, Iran.
    Mohsenzadeh, Abas
    University of Borås, Faculty of Textiles, Engineering and Business.
    Atashi, Hossein
    University of Sistan and Baluchestan, Zahedan 98135-674, Iran.
    Bolton, Kim
    University of Borås, Faculty of Textiles, Engineering and Business.
    DFT studies of hydrocarbon combustion on metal surfaces2018In: Journal of Molecular Modeling, ISSN 1610-2940, E-ISSN 0948-5023, Vol. 24, p. 47-Article in journal (Refereed)
  • 76. Arnegärd, Lovisa
    et al.
    Sjödahl, Gisela
    Risker med Smarta Hem: En kvantitativ studie om individens riskmedvetenhet2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Smart homes are a growing digital phenomenon worldwide. It is widely used in everyday life by many people and the number of users increases significantly the more the area develops. The smart home contributes to many advantages both from an environmental perspective and from a comfort perspective, but as with most digital solutions, smart homes also have a backside, in the form of security problems. There are many risks associated with using a smart home, and the purpose of the study is to find out to what extent the individuals are aware of the risks associated with smart homes, and to find out which risks affect the individuals the most, based on their own point of view. The questions underlying the study are as follows: "To what extent is the individual aware of the risks associated with smart homes?" and "What risks have the greatest impact on the individual?". In order to answer these questions, the study has been carried out through a quantitative method in which a questionnaire was designed, the survey presented, among other things, the risks that were chosen from the theory where we asked the respondents how conscious they are about these risks. The result shows that the majority of respondents are aware that there are risks with smart homes. The study shows that the greatest knowledge existed about the risks of eavesdropping and traffic analysis, even for those who were not users of smart homes and regardless of age group. As for the other risks, it is users of smart homes who have the greatest knowledge about the risks and also individuals aged 30-39. Eavesdropping is the risk that the individuals consider to be the most and least serious risk. Future research in the field can be to find out how the users protect themselves against the risks and to carry out a similar study with a qualitative method to get more nuanced answers.

  • 77.
    Arvidsson, Philip
    et al.
    University of Borås, Faculty of Librarianship, Information, Education and IT.
    Ånhed, Tobias
    University of Borås, Faculty of Librarianship, Information, Education and IT.
    Sequence-to-sequence learning of financial time series in algorithmic trading2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Predicting the behavior of financial markets is largely an unsolved problem. The problem hasbeen approached with many different methods ranging from binary logic, statisticalcalculations and genetic algorithms. In this thesis, the problem is approached with a machinelearning method, namely the Long Short-Term Memory (LSTM) variant of Recurrent NeuralNetworks (RNNs). Recurrent neural networks are artificial neural networks (ANNs)—amachine learning algorithm mimicking the neural processing of the mammalian nervoussystem—specifically designed for time series sequences. The thesis investigates the capabilityof the LSTM in modeling financial market behavior as well as compare it to the traditionalRNN, evaluating their performances using various measures.

  • 78.
    Atalar, Aras
    et al.
    Chalmers University of Technology.
    Gidenstam, Anders
    University of Borås, Faculty of Librarianship, Information, Education and IT.
    Renaud-Goud, Paul
    Chalmers University of Technology.
    Tsigas, Philippas
    Chalmers University of Technology.
    Modeling Energy Consumption of Lock-Free Queue Implementations2015In: 2015 IEEE International Parallel and Distributed Processing Symposium, IPDPS 2015, Hyderabad, India, May 25-29, 2015, IEEE Computer Society, 2015, p. 229-238Conference paper (Refereed)
    Abstract [en]

    This paper considers the problem of modelling the energy behaviour of lock-free concurrent queue data structures. Our main contribution is a way to model the energy behaviour of lock-free queue implementations and parallel applications that use them. Focusing on steady state behaviour we decompose energy behaviour into throughput and power dissipation which can be modeled separately and later recombined into several useful metrics, such as energy per operation. Based on our models, instantiated from synthetic benchmark data, and using only a small amount of additional application specific information, energy and throughput predictions can be made for parallel applications that use the respective data structure implementation. To model throughput we propose a generic model forlock-free queue throughput behaviour, based on combination of the dequeuers' throughput and enqueuers' throughput. To model power dissipation we commonly split the contributions from the various computer components into static, activation and dynamic parts, where only the dynamic part depends on the actual instructions being executed. To instantiate the models a synthetic benchmark explores each queue implementation over the dimensions of processor frequency and number of threads. Finally, we show how to make predictions of application throughput and power dissipation for a parallel application using lock-free queue requiring only a limited amount of information about the application work done between queue operations. Our case study on a Mandelbrot application shows convincing prediction results.

  • 79.
    Atanasiu, Dragu
    University of Borås, School of Engineering.
    Spectral Measures on Compacts of Characters of a Semigroup2010Conference paper (Refereed)
  • 80.
    Atanasiu, Dragu
    University of Borås, School of Engineering.
    The Disc Algebra and a Moment Problem2007In: Function Spaces: Fifth Conference on Function Spaces, May 16-20, 2006, Southern Illinois University, Edwardsville, Illinois, American Mathematical Society , 2007, p. 53-56Chapter in book (Other academic)
  • 81.
    Atanasiu, Dragu
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Bengtsson, Anders
    University of Borås, Faculty of Textiles, Engineering and Business.
    Modern differential- och integralkalkyl2015 (ed. 1)Book (Refereed)
  • 82.
    Atanasiu, Dragu
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Mikusinski, Piotr
    Department of Mathematics,University of Central Florida, Orlando, FL, USA.
    An elementary operational calculus2015In: Mathematical Gazette, ISSN 0025-5572, Vol. 99, no 544Article in journal (Refereed)
  • 83.
    Atanasiu, Dragu
    et al.
    University of Borås, School of Engineering.
    Mikusinski, Piotr
    Fourier transform of Radon measures on a locally compact group2010In: Integral transforms and special functions, ISSN 1065-2469, E-ISSN 1476-8291, Vol. 21, no 11, p. 815-821Article in journal (Refereed)
    Abstract [en]

    A space of generalized functions is constructed that allows us to generalize Bochner's theorem so that all Radon measures on a locally compact group are in a one-to-one correspondence with elements of that space of generalized functions. This defines a Fourier transform for all Radon measures on a locally compact group.

  • 84.
    Atanasiu, Dragu
    et al.
    University of Borås, School of Engineering.
    Mikusinski, Piotr
    On the fourier transform, Boehmians, and distributions2007In: Colloquium Mathematicum, ISSN 0010-1354, E-ISSN 1730-6302, Vol. 108, no 2, p. 263-276Article in journal (Refereed)
    Abstract [en]

    We introduce some spaces of generalized functions that are defined as generalized quotients and Boehmians. The spaces provide simple and natural frameworks for extensions of the Fourier transform.

  • 85.
    Atanasiu, Dragu
    et al.
    University of Borås, School of Engineering.
    Mikusinski, Piotr
    The Fourier transform of Lévy measures on a semigroup2008In: Integral transforms and special functions, ISSN 1065-2469, E-ISSN 1476-8291, Vol. 19, no 8, p. 537-543Article in journal (Refereed)
  • 86.
    Atanasiu, Dragu
    et al.
    University of Borås, School of Engineering.
    Mikusinski, Piotr
    Nemzer, Dennis
    An algebraic approach to tempered distributions2011In: Journal of Mathematical Analysis and Applications, ISSN 0022-247X, E-ISSN 1096-0813, Vol. 384, no 2, p. 307-319Article in journal (Refereed)
    Abstract [en]

    A space of pseudoquotients is introduced that is shown to be isomorphic to the space of tempered distributions on RN. The Fourier transform is defined as a map from the space of pseudoquotients to the space of tempered distributions and as a transformation on pseudoquotients.

  • 87.
    Atanasiu, Dragu
    et al.
    University of Borås, School of Engineering.
    Mikusinski, Piotr
    Siple, Angela
    Pseudoquotients on commutative Banach algebras2014In: Banach Journal of Mathematical Analysis, ISSN 1735-8787, Vol. 8, no 2, p. 60-66Article in journal (Refereed)
    Abstract [en]

    We consider pseudoquotient extensions of positive linear functionals on a commutative Banach algebra A and give conditions under which the constructed space of pseudoquotients can be identified with all Radon measures on the structure space A.

  • 88.
    Atanasiu, Dragu
    et al.
    University of Borås, School of Engineering.
    Nemzer, Dennis
    Extending the Laplace Transform2008In: Mathematics Student, ISSN 0025-5742, Vol. 77, p. 203-212Article in journal (Refereed)
  • 89. Axborn, Ludwig
    et al.
    Rydberg, Robin
    Elektroniska val i Sverige2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This research report aims to provide a picture of Sweden's current attitude and approach to future digitization of the election system and how this change process can take place. It also aims to provide answers to our formulated research questions:

     

    What is people's attitude to the current election system and future digitization of the election system?

     

    How could the current Swedish electoral system be changed with the help of digitalisation and what could these changes look like?

     

    Furthermore, it describes the methods and tools used for the collection of information and thus provides an accurate basis of the current situation through a summary of previous research on the subject through a literature study. Furthermore, the method chapter describes in detail the collection of information that was done through a quantitative and a qualitative study. First, an investigation is done on the current situation at the Swedish electoral authority. This investigation then forms the basis of the online survey that collected information from private individuals to give an understanding of their view and attitude on an electronic voting system. The results of this information collection are compiled and then presented in our results. This result is then discussed in our method chapter where we ourselves reflect on the information and responses we collected. In our discussion we also give examples of whether and how the introduction of a digital election system can and should take place. We do this by identifying different levels of digitization based on the results and presenting them together with a number of identified criteria. Finally, this research report can serve as a basis for answering the question of and in what way Sweden should introduce a digital election system.

  • 90. Baccari, Flavio
    et al.
    Cavalcanti, Daniel
    Wittek, Peter
    University of Borås, Faculty of Librarianship, Information, Education and IT.
    Acín, Antonio
    Efficient device-independent entanglement detection for multipartite systems2016In: arXiv, article id 1612.08551Article in journal (Other academic)
    Abstract [en]

    Entanglement is one of the most studied properties of quantum mechanics for its application in quantum information protocols. Nevertheless, detecting the presence of entanglement in large multipartite sates keeps being a great challenge both from the theoretical and the experimental point of view. Most of the known methods either have computational costs that scale inefficiently with the number of parties or require more information on the state than what is attainable in every-day experiments. We introduce a new technique for entanglement detection that provides several important advantages in these respects. First, its scales efficiently with the number of parties, thus allowing for application to systems composed by up to few tens of parties. Second, it needs only the knowledge of a subset of all possible measurements on the state, therefore being apt for experimental implementation. Moreover, since it is based on the detection of nonlocality, our method is device-independent. We report several examples of its implementation for well-known multipartite states, showing that the introduced technique has a promising range of applications.

  • 91.
    Bader, Caroline
    et al.
    University of Borås, Faculty of Librarianship, Information, Education and IT.
    Castefelt, Eva-Louise
    University of Borås, Faculty of Librarianship, Information, Education and IT.
    Gunnarsson, Louise
    University of Borås, Faculty of Librarianship, Information, Education and IT.
    The Recipe for Cookies: A studies about cookies & the GDPR-law2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The term cookie regarding IT is still a relatively new term. It is rarely discussed among internet users. The name cookie is fairly known but the concept not as much. Cookies are well established by different companies and organizations that in some way offer online services. Today visitors of the internet meet cookies almost every time they go online. For the users who choose not to accept cookies the online experience becomes highly limited. Cookies store information of the visitors in order to improve their experience but also to help the organization.

    The majority of webpages online that uses electronic commerce or in any way can benefit from storing the customers information uses cookies. Cookies can be sold or exchanged between organizations to increase their profit and range. In 2011 a provision regarding all organizations using cookies were implemented. Every internet user visiting these pages had to be notified about their use of cookies immediately. New laws are established in order to control or regulate the exertion of other people’s personal information at the same pace as cookies are further developed. The next law to be established is GDPR, General Data Protection Regulation, which will be focused on in this thesis.

    The purpose of this study is to explore the phenomenon of cookie-use and how it affects internet users and organizations in synergy with the GDPR-law. To achieve the desired result a mixed method has been applied involving both interviews and a survey. The interviews consisted of pre-determined questions and dynamic follow-up questions. Three different organizations participated in the interviews, an university, an organization using e-business and a media agency. The survey consisted of a few mandatory closed questions. The distribution of the survey led to right above 130 respondents.

    The gained results from the use of a quantitative methods hinted that barely half of the respondents knew what a cookie actually was. Several of the participants were curious about learning more about the phenomenon while a lower percentage did not consider it important. Knowledge or ignorance regarding cookies turned out to have a great impact on the respondent’s comfortableness and behavior online. The results from the qualitative method showed that the organizations working with cookies will be affected by GDPR.

    Following thesis will contribute to the field of informatics by consequently process the empiric data collected with support from theoretic competences. It will contribute as a source of information regarding cookies within information technology.

  • 92.
    Baghaei, Behnaz
    et al.
    University of Borås, School of Engineering.
    Skrifvars, Mikael
    University of Borås, School of Engineering.
    Berglin, Lena
    University of Borås, Swedish School of Textiles.
    Hybrid natural fibre reinforcements and prepregs for thermoplastic composites with improved performance and properties2014Conference paper (Other academic)
  • 93.
    Baghaei, Behnaz
    et al.
    University of Borås, School of Engineering.
    Skrifvars, Mikael
    University of Borås, School of Engineering.
    Berglin, Lena
    University of Borås, Swedish School of Textiles.
    Manufacture and characterisation of thermoplastic composites made from PLA/hemp co-wrapped hybrid yarn prepregs2013In: Composites. Part A, Applied science and manufacturing, ISSN 1359-835X, E-ISSN 1878-5840, Vol. 50, p. 93-101Article in journal (Refereed)
    Abstract [en]

    PLA/hemp co-wrapped hybrid yarns were produced by wrapping PLA filaments around a core composed of a 400 twists/m and 25 tex hemp yarn (Cannabis Sativa L) and 18 tex PLA filaments. The hemp content varied between 10 and 45 mass%, and the PLA wrapping density around the core was 150 and 250 turns/metre. Composites were fabricated by compression moulding of 0/90 bidirectional prepregs, and characterised regarding porosity, mechanical strength and thermal properties by dynamic mechanical thermal analysis (DMTA) and differential scanning calorimetry (DSC). Mechanical tests showed that the tensile and flexural strengths of the composites markedly increased with the fibre content, reaching 59.3 and 124.2 MPa when reinforced with 45 mass% fibre, which is approximately 2 and 3.3 times higher compared to neat PLA. Impact strength of the composites decreased initially up to 10 mass% fibre; while higher fibre loading (up to 45 mass%) caused an increase in impact strength up to 26.3 KJ/m2, an improvement of about 2 times higher compared to neat PLA. The composites made from the hybrid yarn with a wrapping density of 250 turns/metre showed improvements in mechanical properties, due to the lower porosity. The fractured surfaces were investigated by scanning electron microscopy to study the fibre/matrix interface.

  • 94.
    Baghaei, Behnaz
    et al.
    University of Borås, School of Engineering.
    Skrifvars, Mikael
    University of Borås, School of Engineering.
    Salehi, Masoud
    Bashir, Tariq
    University of Borås, School of Engineering.
    Rissanen, Marja
    Nousiainen, Pertti
    Novel aligned hemp fibre reinforcement for structural biocomposites: Porosity, water absorption, mechanical performances and viscoelastic behaviour2014In: Composites. Part A, Applied science and manufacturing, ISSN 1359-835X, E-ISSN 1878-5840, Vol. 61, p. 1-12Article in journal (Refereed)
    Abstract [en]

    This paper examines the thermal and mechanical behaviour as well as moisture absorption of aligned hemp composites using hemp/PLA wrap spun yarns. Uniaxial composites were fabricated with 30 mass% hemp using compression moulding. The properties of composites in terms of hemp fibre orientation (aligned and random), off-axis angle and alkali treatment were investigated. It was found that the testing direction influenced the mechanical properties of the composites. Compared with all the fabricated composites, the aligned alkali hemp/PLA yarn composite possessed the best mechanical properties, including tensile, flexural and impact strengths, lower porosity and water absorption. The water absorption for all composites was higher than for neat PLA, both at room temperature and 80 C. The PLA in its treated composites had higher crystallinity, which was attributed to effective heterogeneous nucleation induced by hemp. Based on SEM observation and theoretical analysis of DMTA data, there was a favourable interfacial adhesion in all composites.

  • 95.
    Bakare, Fatimat
    et al.
    University of Borås, School of Engineering.
    Åkesson, Dan
    University of Borås, School of Engineering.
    Skrifvars, Mikael
    University of Borås, School of Engineering.
    Bashir, Tariq
    University of Borås, School of Engineering.
    Ingman, Petri
    Srivastava, Rajiv
    Synthesis and characterization of unsaturated lactic acid based thermoset bio-resins2014In: European Polymer Journal, ISSN 0014-3057, E-ISSN 1873-1945, Vol. 67, p. 570-582Article in journal (Refereed)
    Abstract [en]

    Bio-based thermoset resins have been synthesized using lactic acid oligomers, which were functionalized with carbon–carbon double bonds, in order to allow their crosslinking by a free radical mechanism. Two different resin structures were synthesized. One resin was composed of an allyl alcohol terminated lactic acid oligomer, which was end-functionalized with methacrylic anhydride (MLA resin). The second resin was a mixture of the same allyl alcohol-lactic acid oligomer, and penthaerythritol. This mixture was end-functionalized with methacrylic anhydride, in order to get a methacrylate functionalized lactic acid oligomer, and methacrylate functionalized penthaerythritol (PMLA resin). The synthesized resins were characterized using FT-IR, 1H NMR and 13C NMR spectroscopy, differential scanning calorimetry as well as dynamic mechanical analysis to confirm the resin structure and reactivity. The flow viscosities were also measured in order to evaluate the suitability of the resins to be used as a matrix in composite applications. The results showed that the PMLA resin has better mechanical, thermal and rheological properties than the MLA resin, and both had properties which were comparable with a commercial unsaturated polyester resin. The high biobased content of 90% and the high glass transition temperature at 100 °C for the PMLA resin makes it an attractive candidate for composite applications where crude oil based unsaturated polyester resins are normally used.

  • 96.
    Barghi, Hamidreza
    University of Borås, School of Engineering.
    Functionalization of Synthetic Polymers for Membrane Bioreactors2014Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Membrane bioreactors (MBRs) show great promise for productivity improvement and energy conservation in conventional bioprocesses for wastewater reclamation. In order to attain high productivity in a bioprocess, it is crucial to retain the microorganisms in the bioreactors by preventing wash out. This enables recycling of the microorganisms, and is consequently saving energy. The main feature of MBRs is their permeable membranes, acting as a limitative interface between the medium and the microorganisms. Permeation of nutrients and metabolites through the membranes is thus dependent on the membrane characteristics, i.e. porosity, hydrophilicity,and polarity. The present thesis introduces membranes for MBRs to be used in a continuous feeding process, designed in the form of robust, durable, and semi-hydrophilic films that constitute an effective barrier for the microorganisms, while permitting passage of nutrients and metabolites. Polyamide 46 (polytetramethylene adipamide), a robust synthetic polymer, holds the desired capabilities, with the exception of porosity and hydrophilicity. In order to achieve adequate porosity and hydrophilicity, bulk functionalization of polyamide 46 with different reagents was performed. These procedures changed the configuration from dense planar to spherical, resulting in increased porosity. Hydroxyethylation of the changed membranes increased the surface tension from 11.2 to 44.6 mJ/m2. The enhanced hydrophilicity of PA 46 resulted in high productivity of biogas formation in a compact MBR, due to diminished biofouling. Copolymerization of hydrophilized polyamide 46 with hydroxymethyl 3,4-ethylenedioxythiophene revealed electroconductivity and hydrophilic properties, adequate for use in MBRs. To find either the maximal pH stability or the surface charge of the membranes having undergone carboxymethylation, polarity and the isoelectric point (pI) of the treated membranes were studied by means of a Zeta analyzer. The hydroxylated PA 46 was finally employed in a multilayer membrane bioreactor and compared with hydrophobic polyamide and PVDF membranes. The resulting biogas production showed that the hydroxylated PA 46 membrane was, after 18 days without regeneration, fully comparable with PVDF membranes.

  • 97.
    Barghi, Hamidreza
    et al.
    University of Borås, School of Engineering.
    Skrifvars, Mikael
    University of Borås, School of Engineering.
    Taherzadeh, Mohammad J.
    University of Borås, School of Engineering.
    Catalytic Synthesis of Bulk Hydrophilic Acetaldehyde-Modified Polyamide 462014In: Current Organic Synthesis, ISSN 1570-1794, E-ISSN 1875-6271, Vol. 11, no 6, p. 288-294Article in journal (Refereed)
    Abstract [en]

    Hydrophilization of Polyamide 46 (PA46) via modification with acetaldehyde in continuous phase was studied. The chemical modification of PA 46 with acetaldehyde resulted in a water-swollen polymer with hydrophilic property. The polyamide 46 undergoes a nucleophilic addition with acetaldehyde in the presence of aluminum chloride as a catalyst. The extent of bulk hydroxyethylation using AlCl3 resulted in 95.65% modification counted as total N-hydroxyethylated polyamide 46. The modification resulted in improved hydrophilic properties, and a maximum surface free energy of 44.6 mJ/m2 was achieved after 3 h reaction, whereas the unmodified PA46 had a surface free energy of 11.2 mJ/m2. In addition, thermal properties of the polymers were studied using differential scanning calorimetry and thermogravimetric analyses. The functionalization leads to decrease in the crystallization energy from 88 J/g to 51 J/g, while the melting energy is changed from 110 J/g to 53 J/g. Furthermore, the thermal stability of the PA46 to pyrolysis was diminished after hydroxylation.

  • 98. Barkman, Simon
    et al.
    Mattsson, Marcus
    Microtransactions and lotteries in video-games2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Microtransactions are part of a business model used almost extensively in the video-gaming industry where developers offer virtual goods or features via micropayments. The concept is relatively new and still unknown to many but deeply rooted in modern video-game developers’ business strategies. Microtransactions are found in smartphone applications, online games played on computer or gaming consoles, and while the concept might be unfamiliar to many, the odds are most have encountered it.

     

    Most published games will feature in-game purchases where users have to option to purchase features, items or content for a small amount of money. A microtransaction in its most simplistic form is ad-removal, here developers offer the user a way to get rid of ads by charging a small amount, like $.99. While one microtransaction may seem insignificant, multiple impulsive purchases can quickly add up to considerable sums. This has resulted in the use of microtransactions becoming the most profitable business strategy for game developers.

     

    This study seeks to describe what stimulates a person to complete a purchase by using the components of hedonic motivation from the HMSAM theory leading to the research question: Which hedonic motivations induce use of microtransaction systems and does it vary by age? To research the phenomena a quantitative questionnaire was formed based on hedonic motivations, including three motivations added by the author, gathering responses from 398 video-game players having completed a microtransaction purchase.

     

    After analyzing the results, some components protruded more than others while the consensus suggested that the influence of hedonic motivation was comparatively low. The argument for this outcome may be that players see in-game items as objects of real-world value, making the microtransaction system within a game a utilitarian-motivation system. The general attitude towards microtransactions appeared to be poor which contradicts some elements of previous research while supporting others.

     

    This thesis will contribute to the field of informatics by complementing the traditional technology acceptance model (TAM) with hedonic motivations, as proposed by Lowry et al. in 2013. The author of this study argue it is a modernized way of researching intentions to use asort of system.

  • 99.
    Bashir, Tariq
    et al.
    University of Borås, School of Engineering.
    Ali, Majid
    Persson, Nils-Krister
    University of Borås, Swedish School of Textiles.
    Ramamoorthy, Sunil Kumar
    Skrifvars, Mikael
    University of Borås, School of Engineering.
    Stretch Sensing Properties of Conductive Knitted Structures of PEDOT-coated Viscose and Polyester Yarns2013In: Textile research journal, ISSN 0040-5175, E-ISSN 1746-7748, Vol. 84, no 3, p. 323-334Article in journal (Refereed)
    Abstract [en]

    Wearable textile-based stretch sensors for health-care monitoring allow physiological and medical evaluation without interfering in the daily routine of the patient. In our previous work, we successfully coated viscose and polyester (PES)fibers with the conjugated polymer poly(3,4-ethylenedioxythiophene) (PEDOT), using a chemical vapor deposition (CVD) process. In the present paper we report the possibility of producing a large quantity of PEDOT-coated conductive fibers with acceptable mechanical strength and frictional properties, so that knitted stretch sensors can be produced. In utilizing these knitted structures we have demonstrated the possibility of producing a textile-based monitoring device which is more readily integrated into wearable clothing than the previous metal-containing structures. The performance of viscose and PES knitted structures as stretch sensors has been investigated using a cyclic tester of our own design. For imitation of respiratory and joint movement, the variation in electrical properties of the knitted structures was examined at 5 to 50% elongation, and the performance of knitted viscose and PES structures was then compared on the basis of the cyclic testing results. In order to determine the effect of washing on PEDOT coatings and the knitted structures, two washing cycles were performed. After washing, the persistence of PEDOT coating on knitted structures was investigated using FT–IR spectroscopy and thermogravimetric analysis. In the case of PES fiber, it was revealed that stretch sensing behavior persisted even after the washing cycles. These structures thus have the potential to be utilized in medical textiles for monitoring the physiological activities of patients, such as breathing rate and joint movement.

  • 100.
    Bashir, Tariq
    et al.
    University of Borås, School of Engineering.
    Bakare, Fatimat
    University of Borås, School of Engineering.
    Baghaei, Behnaz
    University of Borås, School of Engineering.
    Mehrjerdi, Adib Kalantar
    Skrifvars, Mikael
    University of Borås, School of Engineering.
    Influence of different organic solvents and oxidants on insulating and film-forming properties of PEDOT polymer2013In: Iranian polymer journal, ISSN 1026-1265, E-ISSN 1735-5265, Vol. 22, no 8, p. 599-611Article in journal (Refereed)
    Abstract [en]

    Processing of conjugate polymers has always been a challenge because of their poor solubility and infusibility in organic and inorganic solvents. The processibility and applications of intrinsically conductive polymers (ICPs) can be enhanced by producing their solutions or dispersions in different suitable solvents. It can also be achieved by preparing un-doped or electrically neutral polymers, which can further be transformed in semiconductor after oxidation/reduction reaction. The present study focuses on the preparation of active dispersions of poly (3,4-ethylenedioxythiophene) (PEDOT) conductive polymer in various organic solvents. For this purpose, the polymerization of 3,4-ethylenedioxythiophene (EDOT) monomer was carried out in three different organic solvents, ethanol, 1-butanol and acetonitrile with two commonly used oxidants, ferric (III) chloride (FeCl3) and ferric (III) p-toluenesulfonate (FepTS). In this regard, the oxidant and monomer solutions with variable molar concentrations (0.25, 0.5, 1.0 M) were prepared in particular solvents and then these solutions were mixed with different monomer/oxidant volume ratios. The obtained dispersions of PEDOT can readily be polymerized on the surface of different materials after solvent evaporation and a uniform film can be achieved. The effect of molar as well as volume concentrations of EDOT monomer and oxidant on insulating (undoped/neutral) and film forming properties of PEDOT was investigated. These dispersions were applied on a transparent PET film and cellulosic fibers (viscose), dried at room temperature and analyzed using scanning electron microscope (SEM), optical microscope and ATR-FTIR spectroscopic analysis. The electrical characterization of undoped PEDOT-coated fibers was performed on Keithly picoammeter. This study contributes to obtain a simpler and instantaneous polymerization method of PEDOT preparation and to enhance its application area.

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