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  • 1251.
    Syberfeldt, Anna
    et al.
    University of Skövde, School of Technology and Society.
    Grimm, Henrik
    University of Skövde, School of Technology and Society.
    Ng, Amos
    University of Skövde, School of Technology and Society.
    Multi-Objective Simulation-Based Optimization of Production Systems with Consideration Noise2008In: / [ed] Bengt Åke Lindberg & Johan Stahre, Stockholm: Swedish Production Academy , 2008Conference paper (Refereed)
    Abstract [en]

    Many production optimization problems approached by simulation are subject to noise.When evolutionary algorithms are applied to such problems, noise during evaluation of solutions adversely affects the evolutionary selection process and the performance of the algorithm. In this paper we present a noise compensation technique that efficiently deals with the negative effects of noisy simulations in multi-objective optimization problems. Basically, this technique uses an iterative re-sampling procedure that reduces the noise until the likelihood of selecting the correct solution reaches a given confidence level. The technique is implemented in MOPSA-EA, an existing evolutionary algorithm designed specifically for real-world simulation-optimization problems. In evaluating the new technique, it is applied on a benchmark problem and on two real-world problems of manufacturing optimization. A comparison of the performance of existing algorithms indicates the potential of the proposed technique.

  • 1252.
    Syberfeldt, Anna
    et al.
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Grimm, Henrik
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Ng, Amos
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Andersson, Martin
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Karlsson, Ingemar
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Simulation-Based Optimization of a Complex Mail Transportation Network2008In: Proceedings of the 2008 Winter Simulation Conference / [ed] S. J. Mason, R. R. Hill, L. Mönch, O. Rose, T. Jefferson, J. W. Fowler, New York: IEEE conference proceedings, 2008, p. 2625-2631Conference paper (Refereed)
    Abstract [en]

    The Swedish Postal Services receives and distributes over 22 million pieces of mail every day. Mail transportation takes place overnight by airplanes, trains, trucks, and cars in a transportation network comprising a huge number of possible routes. For testing and analysis of different transport solutions, a discrete-event simulation model of the transportation network has been developed. This paper describes the optimization of transport solutions using evolutionary algorithms coupled with the simulation model. The vast transportation network in combination with a large number of possible transportation configurations and conflicting optimization criteria make the optimization problem very challenging. A large number of simulation evaluations are needed before an acceptable solution is found, making the computational cost of the problem severe. To address this problem, a computationally cheap surrogate model is used to offload the optimization process.

  • 1253.
    Syberfeldt, Anna
    et al.
    University of Skövde, School of Technology and Society.
    Grimm, Henrik
    University of Skövde, School of Technology and Society.
    Ng, Amos
    University of Skövde, School of Technology and Society.
    John, Robert I.
    Centre for Computational Intelligence, De Montfort University, Leicester, United Kingdom.
    A parallel surrogate-assisted multi-objective evolutionary algorithm for computationally expensive optimization problems2008In: 2008 IEEE Congress on Evolutionary Computation, CEC 2008, IEEE conference proceedings, 2008, p. 3177-3184Conference paper (Refereed)
  • 1254.
    Syberfeldt, Anna
    et al.
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Grimm, Henrik
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Ng, Amos
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Moore, Philip
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Multi-Objective Evolutionary Simulation-Optimization of a Real-World Manufacturing Problem2008In: Proceedings of The 18th International Conference on Flexible Automation and Intelligent Manufacturing (FAIM'08), Skövde: University of Skövde , 2008Conference paper (Refereed)
  • 1255.
    Syberfeldt, Anna
    et al.
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Karlsson, Ingemar
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Ng, Amos
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    An Industrial Case Study of Web-based Simulation-Optimization2011In: Proceedings of the 9th Industrial Simulation Conference, Eurosis , 2011, p. 115-120Conference paper (Refereed)
    Abstract [en]

    This paper presents a web-based simulation-optimization system for improving production schedules in an advanced manufacturing cell at Volvo Aero Corporation in Sweden. The optimization aims at prioritizing components being processed in the cell in a way that minimizes both tardiness and lead times. Results from evaluating the implemented system shows a great improvement potential, but also indicates that further development is necessary before the system can be taken into operation.

  • 1256.
    Syberfeldt, Anna
    et al.
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Karlsson, Ingemar
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Ng, Amos
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Svantesson, Joakim
    Volvo Aero Corporation, SE- 461 81 Trollhättan, Sweden.
    Almgren, Torgny
    Volvo Aero Corporation, SE- 461 81 Trollhättan, Sweden.
    A web-based platform for the simulation-optimization of industrial problems2013In: Computers & industrial engineering, ISSN 0360-8352, E-ISSN 1879-0550, Vol. 64, no 4, p. 987-998Article in journal (Refereed)
    Abstract [en]

    This study presents a platform for industrial, real-world simulation-optimization based on web techniques. The design of the platform is intended to be generic and thereby make it possible to apply the platform in various problem domains. In the implementation of the platform, modern web techniques, such as Ajax, JavaScript, GWT, and ProtoBuf, are used. The platform is tested and evaluated on a real industrial problem of production optimization at Volvo Aero Corporation, a company that develops and manufactures high-technology components for aircraft and gas turbine engines. The results of the evaluation show that while the platform has several benefits, implementing a web-based system is not completely straightforward. At the end of the paper, possible pitfalls are discussed and some recommendations for future implementations are outlined. (C) 2013 Elsevier Ltd. All rights reserved.

  • 1257.
    Syberfeldt, Anna
    et al.
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Lidberg, Simon
    Volvo Cars Engine, Skövde, Sweden.
    Real-world simulation-based manufacturing optimization using cuckoo search2012In: Proceedings of the 2012 Winter Simulaiton Conference, IEEE, 2012, article id 6465158Conference paper (Refereed)
    Abstract [en]

    This paper describes a case study of real-world simulation-based optimization of an engine manufacturing line. The optimization aims to maximize utilization of machines and at the same time minimize tied-up capital by manipulating 56 unique decision variables. A recently proposed metaheuristic algorithm that has achieved successful results in various problem domains called Cuckoo Search is used to perform the simulation-based optimization. To handle multiple objectives, an extension of the original Cuckoo Search algorithm based on the concept of Pareto optimality is proposed and used in the study. The performance of the algorithm is analyzed in comparison with the benchmark algorithm NSGA-II. Results show that the combinatorial nature of the optimization problem causes difficulties for the Cuckoo Search algorithm, and a further analysis indicates that the algorith might be best suited for contiunuous optimization problems.

  • 1258.
    Syberfeldt, Anna
    et al.
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Ng, Amos
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    John, Robert I.
    De Montfort University.
    Moore, Philip
    De Montfort University.
    Evolutionary optimisation of noisy multi-objective problems using confidence-based dynamic resampling2010In: European Journal of Operational Research, ISSN 0377-2217, E-ISSN 1872-6860, Vol. 204, no 3, p. 533-544Article in journal (Refereed)
    Abstract [en]

    Many real-world optimisation problems approached by evolutionary algorithms are subject to noise. When noise is present, the evolutionary selection process may become unstable and the convergence of the optimisation adversely affected. In this paper, we present a new technique that efficiently deals with noise in multi-objective optimisation. This technique aims at preventing the propagation of inferior solutions in the evolutionary selection due to noisy objective values. This is done by using an iterative resampling procedure that reduces the noise until the likelihood of selecting the correct solution reaches a given confidence level. To achieve an efficient utilisation of resources, the number of samples used per solution varies based on the amount of noise in the present area of the search space. The proposed algorithm is evaluated on the ZDT benchmark problems and two complex real-world problems of manufacturing optimisation. The first real-world problem concerns the optimisation of engine component manufacturing in aviation industry, while the second real-world problem concerns the optimisation of a camshaft machining line in automotive industry. The results from the optimisations indicate that the proposed technique is successful in reducing noise, and it competes successfully with other noise handling techniques.

  • 1259.
    Syberfeldt, Anna
    et al.
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Ng, Amos
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    John, Robert I.
    Centre for Computational Intelligence, De Montfort University, Leicester, United Kingdom.
    Moore, Philip
    Computing Sciences and Engineering, De Montfort University, Leicester, United Kingdom.
    Multi-objective evolutionary simulation-optimisation of a real-world manufacturing problem2009In: Robotics and Computer-Integrated Manufacturing, ISSN 0736-5845, E-ISSN 1879-2537, Vol. 25, no 6, p. 926-931Article in journal (Refereed)
    Abstract [en]

    Many real-world manufacturing problems are too complex to be modelled analytically. For these problems, simulation can be a powerful tool for system analysis and optimisation. While traditional optimisation methods have been unable to cope with the complexities of many problems approached by simulation, evolutionary algorithms have proven to be highly useful. This paper describes how simulation and evolutionary algorithms have been combined to improve a manufacturing cell at Volvo Aero in Sweden. This cell produces high-technology engine components for civilian and military airplanes, and also for space rockets. Results from the study show that by using simulation and evolutionary algorithms, it is possible to increase the overall utilisation of the cell and at the same time decrease the number of overdue components.

  • 1260.
    Syberfeldt, Anna
    et al.
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Persson, Lars
    University of Skövde, School of Humanities and Informatics. University of Skövde, The Informatics Research Centre.
    Using Heuristic Search for Initiating the Genetic Population in Simulation-Based Optimization of Vehicle Routing Problems2009In: Proceedings of Industrial Simulation Conference, EUROSIS-ETI , 2009Conference paper (Refereed)
    Abstract [en]

    Genetic algorithms are nowadays commonly used in simulation-based optimization of vehicle routing problems. These algorithms work with a population of solutions that are iteratively improved in an evolutionary process. Usually, the initial population is created randomly. In general, this is not very efficient since it takes unnecessarily long time before sufficiently good solutions have evolved. For a better performance of genetic algorithms, this work describes the use of heuristic search for creating the initial population. A new heuristic search procedure is described in the paper and evaluated using a real-world problem of garbage collection. The results from the evaluation show that the new procedure is able to improve a genetic algorithm.

  • 1261.
    Syberfeldt, Anna
    et al.
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Syberfeldt, Sanny
    University of Skövde, The Informatics Research Centre. University of Skövde, School of Humanities and Informatics.
    A serious game for understanding artificial intelligence in production optimization2010In: Proceedings of the 2010 IEEE Conference on Computational Intelligence and Games, CIG2010, IEEE , 2010, p. 443-449Conference paper (Refereed)
    Abstract [en]

    This paper describes a serious game that can be used to teach and demonstrate production optimization using artificial intelligence techniques. The game takes place in a physical Lego factory and is designed to be an enjoyable learning experience.

  • 1262.
    Szekely, Bulcsu
    et al.
    Lappeenranta University of Technology.
    Hilletofth, Per
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Bakhsheshi, Amir Fazel
    Lappeenranta University of Technology.
    Role of Software Applications in Logistics Decision Making: Case of Warehouse Management Systems2009In: Networked Logistics and Production at South-East Finland, St Petersburg and Leningrad Oblast / [ed] Olli-Pekka Hilmola & Eugene Korovyakovsky, Lappeenranta University of Technology , 2009, p. 111-144Chapter in book (Other academic)
    Abstract [en]

    The ability of software applications to help solving logistics related problems has become of critical importance in general and bringing about productivity improvements in particular. This research is to scrutinize the role of IT solutions in this regard with warehouse systems in focus. According to the findings, software applications will contain increasing functionalities for training and guiding in finding and implementing novel logistics operational models with the goal of increasing return on investment with fewer resources. Intelligent automatically itself-adjusting service level agreement platforms might well be in the centre of focus of attention in the near future. The case study reveals that by synchronizing warehousing processes with advanced functionalities of a wms it becomes feasible to integrate strategic tactical considerations into operational matters in logistics decisions. In this manner it will be possible to enhance capacity utilization rates in executing processes despite large scale fluctuations in demand so as to increase responsiveness towards customers. In turn these factors will bring further simplicity and transparency into the contractual relations between the parties of a supply chain.

  • 1263.
    Szekely, Bulcsu
    et al.
    Lappeenranta University of Technology, Kouvola Research Unit, Finland.
    Saranen, Juha
    Lappeenranta University of Technology, Kouvola Research Unit, Finland.
    Hilmola, Olli-Pekka
    Lappeenranta University of Technology, Kouvola Research Unit, Finland.
    Toikka, Tero
    Lappeenranta University of Technology, Kouvola Research Unit, Finland.
    Hilletofth, Per
    University of Skövde, School of Technology and Society.
    Globalization and International Division of Work: New Ways of Co-operation within Lean Production Networks – Evidence from Russia, Finland & Sweden2008In: Fourth International Railway Logistics Seminar: Co-operation among Transportation Modes in Northern Europe / [ed] Olli-Pekka Hilmola, Lappeenranta University of Technology , 2008, p. 181-198Conference paper (Other academic)
  • 1264.
    Säfwenberg, Henrik
    et al.
    University of Skövde, School of Technology and Society.
    Andersson, Hanna
    University of Skövde, School of Technology and Society.
    Risk- och granskningshanteringsarbetet i större och medelstora börsnoterade bolag utan internrevisionsfunktion2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: The major accounting scandals in companies like Enron, Worldcom and armed was the start of the epidemic, which then came to play a major role in the improvement of corporate governance among companies worldwide. The requirements increased the information that companies released were accurate and complete. To ensure this was the Swedish Code of Corporate Governance presented as a complement to legislation touching corporations. The code does not require mandatory application in implementing the functions but have announced that the companies will make an active position adopted in the establishment of the functions in the code. A notable point is 7.4 where companies must describe in their annual reports whether they feel they need an audit function also called internal audit or not.

     

    Purpose: The purpose of this report is to provide an understanding of the motives of the Swedish companies with a turnover exceeding 3 billion had when they chose not to follow the internal audit function. Also they had describe how they conduct their risk and audit work on an alternative way to internal audit. The limit of three billion, we have chosen as it was before a requirement for companies across the border to follow and explain the principle. After the code was revised in 2008 now apply the principle for all listed companies.

     

    Methods: We conducted a qualitative study in which we have interviewed companies that has chosen not to establish an internal audit function without the use of alternatives to ensure the high quality of the financial reporting. The interviews conducted together with each company's published annual report and have been analyzed to derive contributing reasons for choosing not to establish internal audit and to find complementary functions to achieve the same result. Based on the annual reports and interview samples, we have been able to draw conclusions about how companies are reasoning around the election and to describe their alternative solution.

     

    Analysis and Conclusion: Using the institutional theory's three pillars, we have analyzed the collected empirical data to see how the company's reasoning in selecting alternative solutions for an active and structured risk and audit work. While analyzing and drawing conclusions about how they have justified its position on the internal audit function.

  • 1265.
    Sääker, Annica
    et al.
    University of Skövde, School of Technology and Society.
    Jange, Sara
    University of Skövde, School of Technology and Society.
    Utveckling av kaffekvarn anpassad för restaurangbranchen2010Independent thesis Basic level (degree of Bachelor), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    This report describes the development of a coffee grinder within the HoReCa (Hotel, Restaurant, Catering) sector. The coffee grinder is suitable for filter coffee and the work was carried out in collaboration with Crem International with the objective of developing a new exclusive coffee grinder.

    A feasibility study was conducted with a market analysis where the goal was to obtain thoughts on the uses of a coffee grinder. The results acquired made up the foundation for the requirements and specification of the coffee grinder with the specific requests of Crem International. Ideas for aesthetics, details, and uses of the coffee grinder was also developed and evaluated in collaboration with the company to generate a new concept. In order to optimize concepts regarding interface and interaction the work was given to another member outside the project. The changes that were made were later adapted to fit the materials chosen and the technical aspects produced for the coffee grinder.

    The work resulted in a new coffee grinder which aesthetics, function and material was different to any other of Crem International existing products. The final concept has with its design gotten an exclusive expression which is further strengthened with new functions. The concept was developed in Pro Engineer (a 3D modelling program), with the exact measurements and parameters. The rendering process was later done with Autodesk Alias Studio to try to get the most realistic renderings possible.

  • 1266.
    Söderberg, Malin
    et al.
    University of Skövde, School of Technology and Society.
    Mancu, Valentina
    University of Skövde, School of Technology and Society.
    Holm, Alexander
    University of Skövde, School of Technology and Society.
    Konsumentbeteende: Vilka kriterier spelar roll vid val av kaffe i köpprocessen?2013Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    There is tough competition among companies to get the consumers to choose their products. It's all about branding themselves and to create an attractive mix of goods that will reflect the company's role in the market. To reach success today requires a wide knowledge and information to understand consumers' purchasing behavior and through this one can satisfy customer needs better than competitors.

    The consumption is increasing rapidly, especially when we visit the local grocery store every other day. That the Swedes drink a lot of coffee is not either newness and therefore it is essential to find out which criteria that are the most important for Swedish coffee consumers and their purchasing decisions.

    This report will therefore be focused on the consumer buying process and which criteria that is most important when it comes to choosing the type of coffee. Are there any similarities and differences when it comes to gender and age perspective? To get an answer to the given problem statement has a survey been conducted with 120 respondents participating in close connection to a grocery store and this by an asset of a theoretical basis.

    The key conclusions that emerge in this report are that there are more similarities than differences. Both women and men of all ages believe that taste is of most importance when it comes to choice of coffee. However, we could see that the younger generation is more price sensitive, while the middle-aged generation places a greater commitment at the ethical issues involved, and the older generation is more close to the taste.

  • 1267.
    Söderström, Eva
    et al.
    University of Skövde, School of Humanities and Informatics.
    Åhlfeldt, Rose-Mharie
    University of Skövde, School of Humanities and Informatics.
    Eriksson, Nomie
    University of Skövde, School of Technology and Society.
    Standardisation as a Means to Improve Information Security in Process-Oriented Distributed Healthcare2008In: Proceedings of the 13th EURAS Workshop on Standardisation (EURAS2008) / [ed] Jakobs, Kai & Söderström, Eva, Aachen: Mainz , 2008, p. 233-244Conference paper (Refereed)
    Abstract [en]

     

     

    Regardless of who we are, where we are, and when we get sick, we expect the healthcare sectors to take care of us. And we expect it to treat us with respect. Not the least, this concerns treating our personal information with care. However, the reality is that most healthcare institutions work separately, and that the flow of patient information therefore is less than optimal. This paper aims to investigate how current standards map against the concept of information security, and how process-orientation can be used in conjunction with standards to create secure information flows in healthcare. It does so by describing information security and process-orientation, and investigates how standards for information security apply in a process-oriented, distributed healthcare sector. The result shows that a dual focus is needed,on document and process standardisation, and that healthcare is facing great challenges in order to make this work.

     

     

  • 1268.
    Söderström, Eva
    et al.
    University of Skövde, School of Humanities and Informatics. University of Skövde, The Informatics Research Centre.
    Åhlfeldt, Rose-Mharie
    University of Skövde, School of Humanities and Informatics. University of Skövde, The Informatics Research Centre.
    Eriksson, Nomie
    University of Skövde, School of Technology and Society.
    Standards for information security and processes in healthcare2009In: Journal of Systems and Information Technology, ISSN 1328-7265, E-ISSN 1758-8847, Vol. 11, no 3, p. 295-308Article in journal (Refereed)
    Abstract [en]

    Purpose - Regardless of who or where we are and when we get sick, we expect healthcare to make us well and to handle us and our information with care and respect. Today, most healthcare institutions work separately, making the flow of patient information sub-optimal and the use of common standards practically unheard of. The purpose of this paper is to emphasise the use of standards to improve information security in process-oriented distributed healthcare. Design/methodology/approach - The paper introduces a real-life case which is analysed to highlight how and where standards can and should be used in order to improve information security in process-oriented distributed healthcare. Findings - In total, 11 flaws or problems in information security and process-orientation are identified. From these, six changes are suggested which address how information is handled, and how organizational routines should be standardized. Research limitations/implications - The case setting is Swedish healthcare, but problems can be shared across international borders. The purpose is to highlight the issues at hand. Practical implications - If suggested changes are implemented, healthcare processes will be more streamlined and focused on patients. Routines will be standardized and uncertainties thus removed in terms of how to act in certain situations. Originality/value - Healthcare and academia has yet to address both document and process issues concerning standardization in distributed healthcare. There are also few actual cases from a patient perspective. This paper provides lessons learned from a real-life case, where results may impact how standardization is addressed in healthcare organizations.

  • 1269.
    Söderström, Eva
    et al.
    University of Skövde, School of Humanities and Informatics. University of Skövde, The Informatics Research Centre.
    Åhlfeldt, Rose-Mharie
    University of Skövde, School of Humanities and Informatics. University of Skövde, The Informatics Research Centre.
    Eriksson, Nomie
    University of Skövde, School of Technology and Society.
    Trusting Digitized Patient-Related Information: The Need for a New Approach2011In: Proceedings of the 5th International Symposium on Human Aspects of Information Security and Assurance (HAISA 2011) / [ed] Steven Furnell, Nathan Clarke, Plymouth Center for Security, Comunications & Network Research, University of Plymouth , 2011, p. 119-129Conference paper (Refereed)
    Abstract [en]

    Trust the receiving increasing attention nowadays, particularly since new technology enables communication and collaboration like it has never been seen before. However, trust is a fuzzy concept that needs further examination and attention from multiple levels. For examples, security is very important from a user's point of view in trusting that technology will function in accordance with the user's intended and requested function. This paper reviews the concept of patient safety, which thus far has been discussed and defined from a narrow technical perspective. We demonstrate that it is much more complex, and that it is not primarily the technical issues that are problematic, but rather the cultural, process-related and personnel issues. Our results point to a need for a new approach, which takes the patient's view of healthcare and the patient-related digital information as its focus. The discussion is made from a Swedish perspective, but the issues are international. The needs for information and knowledge in healthcare are obvious. Without clear definitions of concepts and roles, a good information flow or process cannot be designed. Our discussion shows that trusted digital patient information gives an opportunity for a patient-focused healthcare. Multidimensional trust must be addressed on all levels; organization, person and technology. More empirical research into trust in digital patient-related information is necessary, to develop a model for patient safety from a trust perspective that encompasses all levels of trust.

  • 1270.
    Söderström, Ingrid
    et al.
    University of Skövde, School of Technology and Society.
    Gustafsson, Johanna
    University of Skövde, School of Technology and Society.
    Development of trapeze system for dinghy sailing2008Independent thesis Basic level (degree of Bachelor), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

     

    This is a Bachelor degree project report describing the

    development process of a trapeze system for dinghy

    sailing. The project was performed in cooperation with

    Seldén Mast AB, manufacturer of spars and rigging

    systems for yachts and dinghies.

    The trapeze system is used in some dinghy sailing

    classes. It is used to move the weight of the crew outside

    of the boat to compensate the force created by the wind

    in the sails. The system consists of a number of

    components. Focus of the project was set on the position

    adjustment device and the attachment to the harness.

    The product development process included a pre study,

    a Product Design Specification, a function analysis,

    concept development, embodiment, and detail design.

    The project resulted in three products: two variants of

    trapeze cleats (adjustment devices) and a trapeze ring (to

    enable attachment to the harness).

     

  • 1271.
    Sörqvist, Karin
    University of Skövde, School of Technology and Society.
    Motivational factors within the consulting business: differences between formal and occasional work-place2008Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
  • 1272.
    Takang, Felix Achou
    et al.
    University of Skövde, School of Technology and Society.
    Ntui, Claudine Tenguh
    University of Skövde, School of Technology and Society.
    Bank performance and credit risk management2008Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Banking is topic, practice, business or profession almost as old as the very existence of man, but literarily it can be rooted deep back the days of the Renaissance (by the Florentine Bankers). It has sprouted from the very primitive Stone-age banking, through the Victorian-age to the technology-driven Google-age banking, encompassing automatic teller machines (ATMs), credit and debit cards, correspondent and internet banking. Credit risk has always been a vicinity of concern not only to bankers but to all in the business world because the risks of a trading partner not fulfilling his obligations in full on due date can seriously jeopardize the affaires of the other partner.

    The axle of this study is to have a clearer picture of how banks manage their credit risk. In this light, the study in its first section gives a background to the study and the second part is a detailed literature review on banking and credit risk management tools and assessment models. The third part of this study is on hypothesis testing and use is made of a simple regression model. This leads us to conclude in the last section that banks with good credit risk management policies have a lower loan default rate and relatively higher interest income.

  • 1273.
    Tchape Tchapi, Pierre Douglas
    et al.
    University of Skövde, School of Technology and Society.
    Rosenfeld, Elina
    University of Skövde, School of Technology and Society.
    Environmental Concerns and Banking Sector in Sweden2008Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This study concentrates on two questions – “Should banks take environmental concerns?”and “What is the attitude of Swedish banks towards sustainability?” The theory related to environmental concerns in the financial sector is presented and further on the empirical data

    describing the situation within the Swedish banking sector is discussed. The empirical data was collected with the aid of a semi-structured interview and offers a real-life example of actions and attitudes of two case banks in Sweden – SEB and Handelsbanken. The aim of this paper is not restricted to presenting and discussing the collected theoretical and empirical data but also to involve the reader in the environmental way of thinking. This text is based on

    the idea that banks are liable for the indirect impact on the environment and need to acknowledge that some borrowers involve in environmentally harmful businesses. The research method used for this study is of a qualitative nature, more precisely it is an exploratory research which aims to explain. The semi-structured interview used to study the attitudes of the chosen Swedish case banks, was composed of two types of questions – closed- and open-ended. Special characteristics of a semi-structured interview are the prompts and probes in its structure. These are the approaches to guide the respondent to reach broader coverage and greater depth in his/her answers.

    Through the interview results, it became evident that the environmental issues have gained certain visibility within the Swedish banking sector. The given answers pointed towards the impression that maintaining a sound corporate image is the prior concern of a bank and

    indicated that banking sector in Sweden undergoes external pressure to pursue environmentally friendly activities. It is clear that banks play a major role by financing the continuous damage to our planet, and it is comforting to know the banking sector is undergoing the pressure of becoming more involved in sustainable development. The

    conclusions and the empirical evidence presented in this study are hoped to give a simplified view on environmental concerns within banking sector.

  • 1274.
    Tchou Folkesson, Ida
    et al.
    University of Skövde, School of Technology and Society. Motala.
    Pettersson, Sara
    University of Skövde, School of Technology and Society. Motala.
    Servicemötet: En studie om vilka brister och förbättringsmöjligheter som finns i servicemötet mellan säljare och kund2013Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
  • 1275.
    Tejning, Klas
    et al.
    University of Skövde, School of Technology and Society.
    Johansson, Freddy
    University of Skövde, School of Technology and Society.
    Marknadskommunikation via sociala medier: En studie av Facebook som marknadskommunikationskanal2010Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The development of the Internet has opened up new possibilities for communication. It has created platforms where people can share information, knowledge and opinions. These platforms are called social media and with this new technology people have greater opportunities to interact with each other without physically being in the same place.

    Today Facebook is one of the most visited web pages with over 400 million active users. This means that it is an exciting channel for companies to use for marketing purposes. Facebook is a new phenomenon regarding marketing and is a relatively unexplored area. We have studied how Facebook works as a marketing communication channel and the risks and opportunities that it may imply.

    In our study we have used models and theories within the area of marketing communication. We have also interviewed companies and consultants, and made an observational study to research how Facebook works in practice as a marketing communication channel.

    The result of the study has resulted in strengths and weaknesses as well as opportunities and risks it may imply using Facebook as a marketing communication channel.

  • 1276.
    Tekeste, Abel
    et al.
    University of Skövde, School of Technology and Society.
    Suraiya, Tariq
    University of Skövde, School of Technology and Society.
    Venture Capital & Banklån: Småföretagsfinansiering2009Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    There are many different forms of financing for small businesses and two common financing options mentioned in the study, bank loans and Venture Capital.Venture Capital is a form of risk capital financing, investing in unlisted stock market. The feature of the arrangement is that those people are trying to find companies that can offer unique, attractive and in demand products on a strong growing market. Since VC-firms are taking a big risk in cooperation with the investment, the VC-company strong demands while assessments are made on the company will generate a return in the future.

    Bank loans are the most common form of financing for companies in the market. Requirements and assessment under the law is hard especially for small businesses because financing entails high risks. Banks require that the liquidity management in the enterprise should be stable because the bank's main objective is to repayment of debt and the interest payable on the capital.

    The purpose of this study is to examine the requirements and assessments VC-firms and banks make use of the financing of small businesses.

     

  • 1277.
    Tekmen, C.
    et al.
    Dokuz Eylul University, Metallurgical and Materials Engineering Buca, Izmir 35160, Turkey.
    Saday, F.
    Dokuz Eylul University, Metallurgical and Materials Engineering Buca, Izmir 35160, Turkey.
    Cocen, U.
    Dokuz Eylul University, Metallurgical and Materials Engineering Buca, Izmir 35160, Turkey.
    Ljungberg, Lennart Y.
    University of Skövde, School of Technology and Society.
    An investigation of the effect of SiC reinforcement coating on the wettability of Al/SiC system2008In: Journal of composite materials, ISSN 0021-9983, E-ISSN 1530-793X, Vol. 42, no 16, p. 1671-1679Article in journal (Refereed)
    Abstract [en]

    In this study, the wetting behavior of oxide and metallic coated SiC substrate with Al-Si-Mg alloy has been investigated. SiC substrate and particles were coated with SiO(2), TiO(2), and metallic Ni by using thermo-chemical treatment, sol-gel and electroless coating techniques, respectively. Also, the effect of doping elements (Ni, Cu and Fe in TiO2 coating) on the wettability has been investigated. Coatings were characterized by SEM, EDS, XRD, and by means of surface roughness. Contact angle results demonstrate that metallic Ni coating significantly improves the wettability. However, doping elements did not alter the results due to their detrimental effect on surface roughness.

  • 1278.
    Tengblad, Stefan
    University of Skövde, School of Technology and Society.
    Conclusions and the way forward: Towards a practice theory of management2012In: The Work of Managers: Towards a Practice Theory of Management / [ed] Stefan Tengblad, Oxford: Oxford University Press, 2012, p. 337-356Chapter in book (Refereed)
  • 1279.
    Tengblad, Stefan
    University of Skövde, School of Technology and Society.
    Cooptation2013In: Encyclopedia of Management Theory / [ed] Eric H. Kessler, Los Angeles: Sage Publications, 2013, p. 154-155Chapter in book (Refereed)
  • 1280.
    Tengblad, Stefan
    University of Skövde, School of Technology and Society.
    "Idén om medarbetarskap: En studie av en idés resa in i och genom två organisationer” by Karin Kilhammar.2012In: Arbetsmarknad & Arbetsliv, ISSN 1400-9692, Vol. 18, no 3, p. 91-94Article, book review (Other academic)
  • 1281.
    Tengblad, Stefan
    University of Skövde, School of Technology and Society.
    Management Roles2013In: Encyclopedia of Management Theory / [ed] Eric H. Kessler, Los Angeles: Sage Publications, 2013, p. 462-470Chapter in book (Refereed)
  • 1282.
    Tengblad, Stefan
    University of Skövde, School of Technology and Society.
    Managerial work at the top: Tracing changes in work practices and efforts towards theory development2012In: The Work of Managers: Towards a practice theory of management / [ed] Stefan Tengblad, Oxford: Oxford University Press, 2012, p. 226-242Chapter in book (Refereed)
  • 1283.
    Tengblad, Stefan
    University of Skövde, School of Technology and Society.
    Medarbetarskap på 60 minuter2010Report (Other academic)
  • 1284.
    Tengblad, Stefan
    University of Skövde, School of Technology and Society.
    Overcoming the rationalistic fallacy in management research2012In: The Work of Managers: Towards a Practice Theory of Management / [ed] Stefan Tengblad, Oxford: Oxford University Press, 2012, p. 3-17Chapter in book (Refereed)
  • 1285.
    Tengblad, Stefan
    University of Skövde, School of Technology and Society.
    The Work of Managers: Towards a Practice Theory of Management2012Collection (editor) (Refereed)
  • 1286.
    Tengblad, Stefan
    University of Skövde, School of Technology and Society.
    Vad gör en chef?2010In: Företagsekonomins frågor / [ed] Nils Brunsson, Stockholm: SNS förlag, 2010, 1, p. 146-152Chapter in book (Other academic)
  • 1287.
    Tengblad, Stefan
    University of Skövde, School of Technology and Society.
    Visionen om det samhällsnyttiga företaget2011In: Volvo i våra hjärtan - hur skall det gå?: En närdiskussion om "nationalklenoden" Volvo / [ed] Sten Jönsson & Mikael Wickelgren, Malmö: Liber, 2011, 1, p. 63-85Chapter in book (Refereed)
  • 1288.
    Tengblad, Stefan
    University of Skövde, School of Technology and Society.
    What can leadership research learn from the research about managerial work?2010Conference paper (Refereed)
  • 1289.
    Tengblad, Stefan
    et al.
    University of Skövde, School of Technology and Society.
    Alvesson, Mats
    Leadership2013In: Management: An Advanced Introduction / [ed] Lars Strannegård & Alexander Styhre, Lund: Studentlitteratur, 2013, p. 157-180Chapter in book (Refereed)
  • 1290.
    Tengblad, Stefan
    et al.
    University of Skövde, School of Technology and Society.
    Andersson, Thomas
    University of Skövde, School of Technology and Society.
    Employees’ orientation to the employer – An analysis of different concepts2007Conference paper (Refereed)
  • 1291.
    Tengblad, Stefan
    et al.
    University of Skövde, School of Technology and Society.
    Andersson, Thomas
    University of Skövde, School of Technology and Society.
    The responsible worker: Expectations of and responses on responsibility at work2008Conference paper (Refereed)
  • 1292.
    Tengblad, Stefan
    et al.
    University of Skövde, School of Technology and Society.
    Ohlsson, Claes
    Göteborg University.
    The Framing of Corporate Social Responsibility and the Globalization of National Business Systems: A Longitudinal Case Study2010In: Journal of Business Ethics, ISSN 0167-4544, E-ISSN 1573-0697, Vol. 93, no 4, p. 653-669Article in journal (Refereed)
    Abstract [en]

    The globalization movement in recent decades has meant rapid growth in trade, financial transactions, and cross-country ownership of economic assets. In this article, we examine how the globalization of national business systems has influenced the framing of corporate social responsibility (CSR). This is done using text analysis of CEO letters appearing in the annual reports of 15 major corporations in Sweden during a period of transformational change. The results show that the discourse about CSR in the annual reports has changed from a national and communitarian view of social responsibility (cf. a negotiated view of CSR) toward an international and individualistic view of social responsibility (cf. a self-regulating view of CSR). The article contributes theoretically (1) by adding a national-global dimension to previous conceptualizations of CSR and (2) by showing that the rise of CSR discourse and activities in the last 10 years does not have to imply an increased commitment and interest in corporate responsibility per se, only that there are increased societal expectations that corporations should develop the capability to act more independently as moral agents.

  • 1293.
    Tengblad, Stefan
    et al.
    University of Skövde, School of Technology and Society.
    Vie, E.
    The legacy of research in management in practice: Overview of classic studies on managerial work2011Conference paper (Refereed)
  • 1294.
    Tengblad, Stefan
    et al.
    University of Skövde, School of Technology and Society.
    Vie, O. E.
    Management as work practices2012Conference paper (Refereed)
  • 1295.
    Tengblad, Stefan
    et al.
    University of Skövde, School of Technology and Society.
    Vie, Ola Edvin
    Management in practice: Overview of classic studies on managerial work2012In: The Work of Managers: Towards a Practice Theory of Management / [ed] Stefan Tengblad, Oxford: Oxford University Press, 2012, p. 18-44Chapter in book (Refereed)
  • 1296.
    Thams, Christian
    et al.
    University of Skövde, School of Technology and Society.
    Nilsson, Micaela
    University of Skövde, School of Technology and Society.
    Development of a System to Seal Paper Bags for Recycling Food Waste2012Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Sorting food waste is important to utilize it as fuel or fertilizer. Food waste is placed in food waste paper bags and then a waste suction system can be used to transport the waste to a processing factory. The current method of sealing food waste bags for a suction system is ineffective and expensive. This project researches if a solution of sealing the bags can be made easier to apply and cheaper to implement.

    By observing the current system a requirement specification was created to make guidelines of what criteria the solution must achieve to give satisfactory results. This also resulted in two areas of development, the optimal seal and how the user is going to apply it.

    To find a new solution to seal the bag, existing solutions in other areas of interest were investigated. This resulted in a discovery of a method for joining paper together, which due to legal implications will be called “Harry”. “Harry” can be applied to the bag in various configurations. Tests were conducted so that the strongest configuration was achieved. The winning configuration was then chosen as the seal to be implemented.

    To develop how users are going to apply the seal, brainstorming was used to create different concepts and ideas. Three concepts were chosen to be tested using a focus group, feedback was given on all three concepts and the winner was “Concept 2” where the “Harry” technology is implemented in a fixed clamp on the food waste bag kitchen vessel. This solution was further developed and became the final concept.

    The result improves usability and ensures that the end product can be used in a processing factory. There are however factors of concern, if the seal will hold in a real environment and if the solution is usable enough.

  • 1297.
    Thannan, Andreas
    et al.
    University of Skövde, School of Technology and Society.
    Göransson, Andreas
    University of Skövde, School of Technology and Society.
    Utformining av vindavledare för flakkåpa2012Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Due to future EU-regulations, car manufacturers need to reduce their carbon dioxide emissions in order to compete with other companies. This report discusses the development of a wind deflector for Auto-kaross i Floby AB´s Ekobox mounted on a Volkswagen Transporter. The goal is to, due to future regulations of a maximum of 175 CO2/km for lightweight transport vehicles, reduce fuel costs and carbon diox-ide emissions by reducing air resistance. A study of aerodynamics and today’s market was made to find solutions applied to similar prob-lems. Through a costumer survey made by Autokaross, customer needs could be identified which formed the product specification. To gather a big amount of ideas during the concept generation several brainstorming methods were applied in sessions. The ideas were de-veloped into concepts and through consultations from the supervisor at Autokaross the most interesting concepts were picked out. The most important part in the project was the analysis in CFD, Computational Fluid Dynamics, where different cross sections were tested as well as full 3D-models to see what forms performs best and gets the lowest air resistance. When the final concept was to be chosen a concept selec-tion matrix was made were the results from the CFD-simulations had the biggest impact. The final result consists of two parts, a roof spoiler and a boattail, together with Autokaross existing side skirt which ful-fills the goal to reduce the air resistance and thus the carbon dioxide emission and the fuel costs. With these three parts the air resistance is reduced by 27 percent.

  • 1298.
    Thorvald, Peter
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Comparing the use of article numbers to alternate information syntaxes2013In: Proceedings of NES 2013, 45th Nordic Ergonomics & Human Factors Society conference, Iceland, August 2013, 2013Conference paper (Refereed)
    Abstract [en]

    Using article numbers as identifiers in industry is a well-established practice. However, previous investigations have indicated, although failed to confirm, shortcomings in this tradition when used in human based assembly. This paper will report findings from an experimental study where subjects were asked to perform a reaction test designed to test the response to different types of syntaxes. These syntaxes where article numbers (control), symbols, and names of famous figures. Results show that subjects were able to significantly faster identify a trigger and respond accordingly when dealing with triggers with semantic content (symbols and names) than with article numbers.

  • 1299.
    Thorvald, Peter
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Presenting Information in Manual Assembly2011Doctoral thesis, monograph (Other academic)
    Abstract [en]

    Ever since industrialization, manufacturing companies have competed with each other in trying to make the best and the cheapest product and the automotive industry is definitely no exception. The ‘arms race’ between truck and car manufacturers has pushed manufacturing technology and production practice to where it is today. However, whereas companies have traditionally competed with the engineering excellence and technology of their products, the human effort in production is often neglected. After all, there are still many tasks that require the flexibility and intelligence of a human worker.

    This thesis focuses entirely on the information context of assembly workers. It investigates and discusses their general information behaviour in terms of information need, syntax of information, information sources and technology as well as basic cognitive abilities used to utilize information such as attention and memory. The thesis presents relevant literature on the subject of information behaviour and pinpoints potential hazards of information design in manual assembly. It also identifies three hypotheses that suggest improved productivity and quality of work as a result of certain changes in the information landscape. One hypothesis deals with the layout of information, a second deals with the syntax used to identify parts and a third deals with the information medium used to convey information.

    Analysis of empirical data gathered shows, among other things, that using unstructured and batched information favours productivity of work; using a syntax with semantic content as opposed to traditional article numbers without any semantic content also improves productivity of work; and using a mobile information unit betters the quality of work.

    The purpose of the thesis is to present the beginnings of a road map towards the greater understanding of information presentation in manual assembly. As previous research on this application area has been scarce, it draws upon existing theories found in other sciences, primarily cognitive science and its applications such as Human-Computer Interaction (HCI), information theory and human error.

    􀀁

  • 1300.
    Thorvald, Peter
    et al.
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Brolin, Anna
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Högberg, Dan
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Case, Keith
    Mechanical and Manufacturing Engineering, Loughborough University.
    Using Mobile Information Sources to Increase Productivity and Quality2010In: Proceedings of the 3rd Applied Human Factors and Ergonomics (AHFE) International Conference / [ed] Gavriel Salvendy, Waldemar Karwowski, Louisville: AHFE International , 2010Conference paper (Refereed)
    Abstract [en]

    This paper presents an experimental study made on the use of different kinds of information sources in manual assembly. The general idea is that only the necessary information should be presented to the worker and it should be presented where and when the worker needs it as this is believed to both save time and unload cognitive strain. To account for the latter two aspects of this thought, where and when, this paper investigates the use of a handheld unit as an information source in manual assembly. Having a mobile information system, such as a Personal Digital Assistant (PDA), that can be carried with you at all times, as opposed to a stationary one, such as a computer terminal, is hypothesized to greatly improve productivity and quality. Experimental results show that the use of a PDA significantly improves quality whereas productivity does not significantly improve.

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