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  • 1.
    Hakim, Ali
    Linköping University, The Department of Physics, Chemistry and Biology.
    Characterization of Hard Metal Surfaces after Various Surface Process Treatments2008Independent thesis Advanced level (degree of Master), 20 poäng / 30 hpStudent thesis
    Abstract [en]

    The aim of this thesis is to investigate how material surfaces are affected by various surface treatments and how this relates to the adhesion of the coating. The materials that were studied were WC-Co and Cermets and the surface treatments used were polishing, grinding with coarser and finer abrasive grains, and finally wet blasting and dry blasting. Focus was on deformations and residual stresses in the surface, surface roughness and cracks. The test methods used for examining the samples included surface roughness measurements, residual stress measurements, adhesion tests using Rockwell indentation and SEM images of the surface and the cross section.

    The results concluded that polishing gives very good adhesion. Additionally, the adhesion for ground surfaces was good for WC-Co but very poor for Cermets. Furthermore, it was observed that finer abrasive grains did not result in better adhesion. In fact, the coarser grains gave slightly better results. Finally, it was concluded that wet blasting has a clear advantage over dry blasting and results in much better adhesion, especially for the Cermets. The results for the WC-Co were a bit inconsistent and so further research is required.

  • 2.
    Reinelt, Wolfgang
    Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, The Institute of Technology.
    Loop Shaping of Multivariable Systems with Hard Constraints on the Control Signal2001In: Electrical engineering (Berlin. Print), ISSN 0948-7921, E-ISSN 1432-0487, Vol. 83, no 4, 169-177 p.Article in journal (Refereed)
    Abstract [en]

     A general framework for the design of multivariable control systems subject to hard constraints on each control channel is developed. The design procedure is based on the ℋ∞ loop shaping and relies on the calculation of the maximum possible control amplitude for a class of reference signals, bounded in amplitude and rate. Special attention is given to adjustment of the design weights in order to meet prescribed bounds on each control signal. A simulation example, the control of the vertical dynamics of an aircraft, illustrates the suggested procedure.

  • 3.
    Karlsson, Astrid
    Linköping University, Department of Computer and Information Science.
    Sammanhangets påverkan på språkförståelse: Sammanhang som underlättar för förståelse när tal är svårt att förstå2015Independent thesis Basic level (degree of Bachelor), 12 credits / 18 HE creditsStudent thesis
    Abstract [en]

    How hard it is to understand speech can be affected of noise in the surrounding and/or the individual ability to hear. This study examines if semantic coherence and previous knowledge in the form of textprimes, increases the perceptual clearity of speech that is degraded by Noise Vocoding (see: Shannon, Zeng, Kamath, Wygonski, & Ekelid, 1995). This study showed that the perceptual ability of a degraded speech sentence increased if the sentence was presented after a textprime, compared to if no prime was shown. The perceptual clearity of degraded speech sentences was also increased if the sentence was semantically coherent. This study showed significant results for increased perceptual clearity for the condition with matching primes, independent of if the sentence was semantically coherent or not. The perceptual clearity of spoken sentences was significantly increased if the sentence was semantically coherent, and presented after a matching prime, or if the speech-sentence was less degraded. The perceptual clearity was experienced as highest when a speech sentence was both semantically coherent and presented after a matching textprime. This shows that previous knowledge and semantic context influences perceptual clearity, both together and as separate variables. 

  • 4.
    Eriksson, Björn
    Linköping University, Department of Computer and Information Science, Software and Systems.
    A study of Bitcoin as a currency for email-based micro-transactions2016Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    Bitcoin is a cryptocurrency that has been the focus of a lot of discussions lately and has attracted a large number of users. Its offers many possibilities for cheap transactions and unregulated finances which has been realized in numerous sites and applications on the web and in mobile phones. One medium that seem to have been neglected when it comes to Bitcoins development is email. This is curious since Bitcoin by its nature seem to have many properties that would work well with texted messages. The purpose of this study it to analyze the current papers about Bitcoin to find the current status of email based Bitcoin services,  and try to analyze if email as a tool is a suitable medium to be used with Bitcoin. This analyze is done through a systematic literature review of current papers, followed by an examination of past and current Bitcoin companies that has used email as part of their service. In the end the results suggested that the low security in email, and the apparent lack of services that would benefit from an email based Bitcoin service suggest that a service like that would be hard to develop today and not very useful to the public.

  • 5.
    Servitja Robert, Maria
    Linköping University, Department of Mathematics, Mathematical Statistics . Linköping University, Faculty of Science & Engineering.
    A First Study on Hidden Markov Models and one Application in Speech Recognition2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Speech is intuitive, fast and easy to generate, but it is hard to index and easy to forget. What is more, listening to speech is slow. Text is easier to store, process and consume, both for computers and for humans, but writing text is slow and requires some intention. In this thesis, we study speech recognition which allows converting speech into text, making it easier both to create and to use information. Our tool of study is Hidden Markov Models which is one of the most important machine learning models in speech and language processing.

    The aim of this thesis is to do a rst study in Hidden Markov Models and understand their importance, particularly in speech recognition. We will go through three fundamental problems that come up naturally with Hidden Markov Models: to compute a likelihood of an observation sequence, to nd an optimal state sequence given an observation sequence and the model, and to adjust the model parameters. A solution to each problem will be given together with an example and the corresponding simulations using MatLab. The main importance lies in the last example, in which a rst approach to speech recognition will be done.

  • 6.
    Asklund Andersson, Alexandra
    Linköping University, Department of Computer and Information Science. Linköping University, Faculty of Science & Engineering.
    Digitala spel och dyslexi2015Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    In the modern world there is a great emphasis on the individuals ability to partake in written information; however, as there is between 5% and 8% of the Swedish population that suffers from a learning disability, this can quickly become a problem. The fact that Dyslexia is hard to detect early on adds to the burden of those affected and can even lead to low self-esteem and failing motivation to study.

     

    Therefore, there is a need for new screening tools that can detect dyslexia early, an idea centered on a game for such a tool is what this study has chosen to focus on. The viability of such a game has been tried through a series of 16 qualitative interviews and 15 benchmarking analyses. The author makes the case for the requirement specification such a game based screening tool will have, what must be considered in its development, and how kids reflect upon games.

     

    The requirement specification presented in the results serves not only as a basis for a screening tool but also gives valuable insight into the opinions of children on the topic of gaming and provides the more practical suggestions for the tool itself.

  • 7.
    Widerberg, Annie
    et al.
    Linköping University, Department of Management and Engineering, Economics. Linköping University, Faculty of Arts and Sciences.
    Hjalte, Matilda
    Linköping University, Department of Management and Engineering, Economics. Linköping University, Faculty of Arts and Sciences.
    En plats för livet: En jämförande fallstudie om hur två kommuner hanterar de demografiska förändringarna2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Currently there are big differences between municipalities in Sweden. These differences leadto two dissimilar tendencies: the population is aging and the degree of urbanisation increases.The urbanisation has set several smaller municipalities in a severe economic situation and alot of municipalities are facing to either raise the local tax or reduce the public service. In thispaper the authors’ research through economic concepts how two medium sized municipalitieshave handled the demographic changes and what the municipalities should do in order toincrease their attractiveness.The findings of this study indicate that the demographic changes, to a large extent, dependson previous recessions in the municipalities which still is causing an unbalanced economy.The municipalities are facing a downward spiral that is hard to emerge from. On the otherhand some municipalities managed the recessions in a more successful way and are nowfacing a more positive economic position. Further, there is a clear correlation between a wellfunctioningintegration on the labour market and public finances. The result of the paper alsoshows that a well-functioning labour market, housing market and commercial supplydetermines municipalities’ attractiveness.

  • 8.
    Lidestam, Helene
    Linköping University, Department of Management and Engineering.
    Factors reflecting bids in procurement of bus transport2013In: Management of environmental quality, ISSN 1477-7835, E-ISSN 1758-6119, Vol. 24, no 4, 526-537 p.Article in journal (Refereed)
    Abstract [en]

    Purpose– To facilitate the choice of the winning bid in the public procurement of bus transports in Sweden and to make sure that the winning bid has the qualities that are requested, the placed demands are very detailed. On the other hand, the detailed demands will lead to limitations and could force the operator to use less environmentally friendly alternatives.

    The purpose of this paper is to identify factors regarding the buses and their properties that are commonly used in the public procurement process and analyze their level of details.

    Design/methodology/approach– The method is to collect and study foundations from the process of public procurement of bus transport for three years in Sweden.

    Findings– The result shows the most common and relevant aspects regarding the buses and their properties that have been requested and taken into consideration when creating the final contracts. Most of the demands regarding the factors were also described in very great detail.

    Research limitations/implications– The study is done with data from three years. The demands have only been classified on two levels: detailed and non‐detailed.

    Practical implications– The results enlighten the amount of demands that are specified in the foundations for public procurement of bus transports. While these demands make the base for the contracts, they are important for the decision makers in public transports.

    Originality/value– The paper shows a general overview of hard and soft demands regarding factors that have been expressed in the foundations for public procurement of bus transports for the previous three years.

  • 9.
    Ödling, Mattias
    Linköping University, Department of Management and Engineering, Environmental Technology and Management. Linköping University, Faculty of Science & Engineering.
    How Provider Value is Perceived in regards to Integrated Product Service Offerings and why: A case study2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    As companies grow larger and become more international, it is likely that it comes to a point where it would be cheaper to produce on site, or at least have distribution centers, rather than having a centralized production that requires long range shipping. As this occurs, there is a wide range of challenges that the company must face, however these challenges are by now well documented and while not to be underestimated and called “easy” it is nothing new as a wide range of companies have done it before. One aspect that however is less known is the influence that external differences has, in other words factors that would produce a differing result even with the exact same internal setup, on the perceived aspects (referred to as Values in this work) from the providers point of view. In particular what is interesting is the perceived positive impacts above expectations that is gained from having external differences. To be able to better understand and quantify this impact the term “Provider Value” has been created and is being researched towards understanding what Values exist and how they are being affected.Provider Value (PV) is a cutting edge concept within eco-design research that this work is based on and in particular ProVa – Provider Value Evaluation for Integrated Product Service Offerings (Matschewsky et al. 2015) is the latest step to date towards creating the tools needed to increase the utilization, and reap the benefits, of PVs. Another interesting and relevant aspect to PV is how Product/Service System (PSS) could be an essential part in paving a new way of avoiding increased environmental impact while having economic growth. This is done by adding services on top of already existing products (Sakao et al. 2009).To find out more about what kind of external factors that might be behind the differences a case study was conducted, interviewing employees at two companies within one concern in Sweden and Japan. The results of this work indicates that if the company want its PVs to remain the same the main obstacle is external economic differences. In this particular study it is also clear that differences in business model and company structure has a big impact. With all the discussion regarding environment it was on a surprisingly low level of interest at both companies and what mattered was that the products cleared the minimum requirements, nothing more, as “any additional return is hard to estimate”. If PV keeps growing and tools are made to assist, this could not only help simplify the transitioning to other countries and help utilizing existing Values from the start, it could also increase the utilization in general, in particularly in regards to the Environment.

  • 10.
    Lönnerud, Sara
    Linköping University, Department of Physics, Chemistry and Biology, Biology. Linköping University, Faculty of Science & Engineering.
    Effekter av kalkning på fosforhalten i en kalkrik sjö – ett mesokosmexperiment i Tåkern2015Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    One of the major current environmental issues is eutrophication of aquatic environments. Measures to reduce eutrophication of lakes and streams are of high priority in Sweden. There are several negative implications of eutrophication such as lowered water quality, reduced biodiversity and loss of recreational values. These negative effects can be correlated to high phosphorus concentrations. The purpose of this study was to investigate the possibility of reducing the amount of available phosphorus during spring using liming in Lake Tåkern in southern Sweden. The study was conducted in April of 2015 in five mesocosms, three were treated with a mixture of limestone powder (CaCO3) and slaked lime (Ca(OH)2) to pH and two were untreated (controls). The aim of the liming was to precipitate calcite, to which phosphorus adsorbs. The variables used to document effects of liming include particulate phosphorus (PP), total phosphorus (TP), soluble reactive phosphorus (SRP) and complementary water chemistry. In addition to this experiment, samples of TP from a previous mesokosm experiment in July 2014 were analysed for comparison. Results showed no significant effects of liming on either PP, TP or SRP. The lack of effects from liming was most likely a result of low concentration of SRP in Lake Tåkern. Conclusions from this study were that liming at one occasion is not suitable for control of phosphorus concentration, the low observed concentrations of SRP over a longer period also indicates that repeated liming’s would not affect phosphorus concentration in Lake Tåkern.

  • 11.
    Rosenvik, Niclas
    Linköping University, Department of Computer and Information Science, Software and Systems. Linköping University, Faculty of Science & Engineering.
    Study of the Time Triggered Ethernet Dataflow2015Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    In recent years Ethernet has cought the attention of the real-time community. the main reason for this is that it has a high data troughput, 10Mbit/s and higher, and good EMI characteristics. As a protocol that might be used in real-time anvironments such as control systems for cars etc, it seems to fulfil the rquirements. TTEthernet is a TDMA extention to normal Ethnernet, designed to meet the hard deadlines required by real-time networks. This thesis describes how TTEthernet handles frames and the mathematical formulas to calculate shuffle delay of frames in such a network. Open problems related to TTEthernet are also discussed.

  • 12.
    Gilchrist, Philip
    Linköping University, Department of Management and Engineering, Business Administration. Linköping University, Faculty of Arts and Sciences.
    Relationship Marketing in the FMCG: The Forgotten Consumer2015Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Many producers in the FMCG experience immense pressure from strong retailers and hard discounters. One solution proposed by academics is through engaging in Relationship Marketing with the end consumer to create a strong pull-effect and loyalty to the brand. In order to understand how producers make use of Relationship Marketing, 5 case studies with Swedish FMCG- producers has been conducted. It has been found that producers merely make any use of Relationship Marketing towards consumers, albeit focus a lot of resources on Relationship Marketing towards the immediate customers. The author examines the feasibility of Relationship Marketing in the FMCG, and concludes that the producers overlook many of the outlined benefits of Relationship Marketing.

  • 13.
    Jägestedt, Linnea
    Linköping University, Department of Management and Engineering, Political Science. Linköping University, Faculty of Arts and Sciences.
    Implementering av Lvux12 i SFI: En fallstudie baserad i Linköping2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This essay investigates how the new school curriculum, Lvux12, have been implemented in Linköping, with focus on the education Swedish for Immigrants (SFI). A lot of criticisms have been aimed at the SFI educations around the country and this is partly what the reform is based on, to be able to improve the education to the better. Despite this reform, criticisms are still being heard, so is the implementation of the reform really a success and has it been any changes?

    In this essay there are mainly two analytical perspectives being used; bottom-up and top-down. Based on these, the empirical materials collected through interviews are analyzed in comparison with already existing publications about the implementation process.

    The focus of the essay is concentrated to the information process, the adaptation level at micro level relative the directive from macro level, and also implementation barriers. It proves that there are some problems during the information process which did not execute the way described in the publications prior to the implementation. It has also emerged implementation barriers related to this since the information didn’t reach through, probably due to poor structure or due to pure reluctance. One big problem is the lack of follow-up and evaluation, both at local and national level.

    Even if it has been possible to enforce many adaptations and it has been possible to work with the reform from the micro level, it is still missing resources and some organizational support from further progress.

    The question whether the implementation has been a success or not is complex and a hard one to answer. There are many aspects to consider and different results points in different directions. Over all, the conclusion has to be that the implementation is a success, although with several possibilities for improve­ment.

    The question still has many question marks left and it is both relevant and important to continue to investigate the subject to reach appropriate measures. A lot is working well, but it can always get better and one has never learnt enough.

  • 14.
    Magnusson, Karolina
    Linköping University, Department of Biomedical Engineering. Linköping University, Faculty of Science & Engineering.
    Mechanical heart rate detection using cardiogenic impedance - a morphology approach2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The objective of this thesis is to examine the possibility to determine the mechanical heart rate using intracardiac impedance in the time domain. Deducing the mechanical heartrate from the impedance could help improve the performance of implanted devices that today depend on the measurement of the heart’s electrical activity. Cardiogenic – also known as intracardiac – impedance is based on the difference in conductivity between heart muscle tissue and blood, making the impedance vary as the heart is filled and emptied. The data used in this thesis was acquired from three previous studies performed by St Jude Medical, two clinical and one preclinical. Two impedance measurement configurations were chosen from these studies, one bipolar and one quadropolar. To deduce the heart rate from the intracardiac impedance six algorithms were evaluated. Three using continuous peak detection and three evaluating small frames of the impedance signal.The peak detection algorithms were peak detection on the impedance signal itself, on its derivative  and on its integral. The three others were an Auto Correlation Function (ACF), an Average Magnutide Difference Function (AMDF) and an Average Wave Comparison Function (AWCF). In order to assess the heart rates deduced from the intracardiac impedance by the algorithms, these rates were compared to both the IEGM or the ECG (depending on which study was at hand) and the blood pressure.

    Several issues affected the performance of the algorithms. Impedance morphology can vary between patients. Some display so called “double peaks”, making it hard to decide whether a patient has for example a pulse of 80 bpm or of 160 bpm. The impedance morphology was also affected by amplitude modulation with the respiration frequency which in some patients cause difficulties to analyze the impedance signal. The results show that the two impedance measurement configurations perform equally well and that the ACF method was the overall best performing algorithm. They also show that individual patient impedance morphology has a large influence on the results and for future studies it should therefore be interesting to calibrate the algorithms for each patient, as this should improve performance.

  • 15.
    Strömgren, Oliver
    Linköping University, Department of Computer and Information Science, Software and Systems. Linköping University, Faculty of Science & Engineering.
    Usage of Constraint Programming for Nurse Rostering Problems: A literature study2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Constraint Programming can be used to solve many problems and this thesis is about getting an overview on the usage of Constraint Programming for Constraint Satisfaction Problems, both interactive and explorative. Many problems can be mathematically modeled as a Constraint Satisfaction Problem but this thesis will focus on the Nurse Rostering Problem since it is a well-studied area. The problem when creating a schedule for nurses is that it can easily be over-constrained and a solution could be hard to find. This thesis will investigate whether if Constraint Programming is a good technique for solving the Nurse Rostering Problem but also if user interaction is considered when solving the problem. The method for this is a literature study where a number of research articles has been reviewed and categorized, and resulted in 27 different kinds of sources that were used. The conclusion is that there exists better ways to solve these problems than the use of pure Constraint Programming. To answer the second part of the thesis, it seems like the solution for the problem is the main focus and therefore is user interaction something that is given less attention.

  • 16.
    Strand, Viktor
    et al.
    Linköping University, Department of Management and Engineering, Engineering Materials.
    Ödmar, Emil
    Linköping University, Department of Management and Engineering, Engineering Materials.
    Dragprovning av plastpåsar av återvunnen plast2015Independent thesis Basic level (degree of Bachelor), 12 credits / 18 HE creditsStudent thesis
    Abstract [en]

    When manufacturing products from recycled plastic, they obtain a varying quality because of the unknown composition of the plastic. This is because it is hard to sort out the materials that are made of unwanted plastic types, or not made of plastic at all.

    The results show that there is a big difference between the machining and cross machining direction, particularly regarding the elongation at break. Several different positions on the bags are tested and compared. The center position on the bag is generally weaker than other positions for the plastic shopping bag. The elongation at fracture is on the same level as virgin plastic for both of the tested plastic bags.

    The project aims to determine a method for testing variations in the mechanical properties in plastic bags and conduct tests for different positions on the bags. To test the bags, tensile testing was used to compare modulus of elasticity, yield strength, ultimate tensile strength and elongation at fracture. 

  • 17.
    Backlund, Eric
    et al.
    Linköping University, Department of Management and Engineering, Business Administration. Linköping University, Faculty of Arts and Sciences.
    Sörensson, Jonathan
    Linköping University, Department of Management and Engineering, Economics. Linköping University, Faculty of Arts and Sciences.
    Valuta och internationellt bistånd: Svenska biståndsorganisationers hantering av valutaköp och valutarisk2015Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Background: Non-governmental organizations (NGOs) are active in most parts of the world and are consequently exposed to foreign exchange risk. The organizations manage aid funds in both common and uncommon types of currency when they in different ways finance local cooperation partners. The amount of previous research how aid organizations handle the management of currency trade and foreign exchange risk is limited and this study aims to examine the area further.

    Aim: The study aims to analyse the complex of problems regarding exposure to foreign exchange risk for both Swedish NGOs and their cooperation partners, to do so on the basis of foreign exchange risk theory and best practice. The aim is in such a way to discuss general strategies for currency trade and foreign exchange risk management for Swedish NGOs.

    Completion: The qualitative approach consists of nine interviews that have been designed in accordance with theory and previous research. A picture of the organizational processes and needs of Swedish NGOs regarding foreign exchange risk- and currency trade management was given by five interviews with NGOs. Information concerning how foreign exchange risk- and currency trade management is utilized in practice and how experts in the field perceive current management of NGOs was gathered from four interviews with actors within foreign exchange risk- and currency trade management. The empirical data is analysed on the basis of the theoretical framework and previous research.

    Conclusion: The study shows that the complex of problems regarding foreign exchange risk- and currency trade management are not as straightforward as at first glance. It also indicates that foreign exchange risk management differs between for-profit businesses and non-profit organizations. It appears that NGOs currently transfer all foreign exchange risk exposure to its counterpart through contracts. The investigation and implementation of foreign exchange risk management is not possible for NGOs with a large ratio of restricted funds. Finally a number of strategies have been developed for a more cost-effective currency trade. 

  • 18.
    Grönhult, Magnus
    et al.
    Linköping University, Department of Management and Engineering, Business Administration. Linköping University, Faculty of Arts and Sciences.
    Karlsson, Felicia
    Linköping University, Department of Management and Engineering, Business Administration. Linköping University, Faculty of Arts and Sciences.
    Key Account Managements värde för säljande tjänsteföretag2015Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    To build strong and long-lasting customer relationships has become a necessity in industrial marketing, whereat the relationships in itself can be viewed as the most important asset for the company. Key Account Management has its roots in relationship marketing and has grown in popularity the past decades. By selecting and focusing primarily on a few key customers, which the company deems to be the most important, Key Account Management is purposed to generate and locate value. The purpose of this paper is to describe and substantiate the potential value, seen as the difference between advantages and disadvantages, that Key Account Management may provide for the selling company. The study has a qualitative approach consisting of six interviews. Two companies with Key Account Management, two companies without KAM and two customer companies were interviewed in a comparative design. One of the customers had a relationship to one of the companies with KAM, whilst the other one did not. By having a supporting organization, four critical aspects to the companies KAM, a qualified Key Account Manager, and active customers, soft values as improved relationships and customer understanding are guaranteed. These can in turn enable access to other soft and hard values that leads to higher profit. KAM is however an investment which occupies a lot of resources, alongside with creating potential disadvantages. The value has in this study been identified as the difference between potential advantages and disadvantages, but these differ from company to company which in turn makes the actual value from KAM various.

  • 19.
    Carlsson, Victoria
    et al.
    Linköping University, Department of Management and Engineering, Business Administration. Linköping University, Faculty of Arts and Sciences.
    Löfgren, Cecilia
    Linköping University, Department of Management and Engineering, Business Administration. Linköping University, Faculty of Arts and Sciences.
    Sinar svensk mjölkproduktion?: En studie om en bransch i kris2015Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Background: In 1990, the Swedish food market was deregulated to be enforced with theEuropean food market. Since then, the number of dairy farms has dropped from roughly 25000 companies, to a little bit more than 4 000 companies. During the end of year 2014 andthe beginning of 2015 the price paid to dairy farmers by dairies has been extremely low,which has had an impact on the dairy farmers profitability. Each dairy farmer has one dairycompany affiliation, and it is the dairy companies who decide which price they will pay forthe milk that is produced. Because of the monotone production of dairy farmers, it isusually hard for them to differentiate their product and they often end up in an unprofitablesituation.

    Aim: This study aims to examine the dairy industry and the structural problems Swedishdairy farmers perceive within it. Given the perceived structural problems, we want toexamine the approach Swedish dairy farmers holds to the possibilities they considerthemselves to have, to influence their role within the dairy industry.

    Completion: The study begun by reading newspaper articles, specialist literature and othere-references regarding the dairy industry. The collecting of secondary data was followed upby collection of primary data through several visits by dairy farms, surveys, one case studyand one telephone interview. The study has an abductive approach, and therefore theory andempirical data were collected parallelly. During the collection we used both a qualitativeand a quantitative method. The quantitative information was collected by using semistructuredand structured interviews but also by doing observations. The quantitative datawere collected using surveys.

    Conclusion: Swedish dairy farmers are today in a severe situation. They suffer from lowprofitability, and it is hard for them to influence their income in the current dairy industrystructure. Because dairy farmers experience low control in their daily work, and at the sametime have a very high work strain, it is possible that it will affect their health in a negativeway. However, we believe that dairy farmers, like many of them selves, can influence theirposition in the dairy industry, even though a lot of work will be needed. If dairy farmerswould like to affect their position in the industry, it would be helpful for them to develop aclear strategy for their companies, something we do not percept that many Swedish dairycompanies have today.

  • 20.
    Gustavsson, Emily
    et al.
    Linköping University, Department of Management and Engineering, Business Administration. Linköping University, Faculty of Arts and Sciences.
    Mlivic, Anja
    Linköping University, Department of Management and Engineering, Business Administration. Linköping University, Faculty of Arts and Sciences.
    Medelstora företags inköpsarbete och affärsrelation med en större leverantör2015Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Background

    Purchasing has been more acknowledged during the last couple of years.Higher demands from customers have led to companies seeingadvantages with close business relationships. However, medium-sizedenterprises have influences from both big and small enterprises and it istherefore hard to know what starting position they have in businessrelationships. The literature review shows that research is lacking foronly medium-sized enterprise’s buying process. Therefore it isinteresting to study purchasing in medium-sized enterprises with focuson their business relationship with a larger supplier, to be able to see howboth parties perceive the business relationship and if medium-sizedenterprises can be classified in the same definition.

    Aim

    The aim with this study is to gain a greater insight of purchasing inmedium-sized enterprises, with a focus on their business relationshipwith a larger supplier. The study aims to gain a bigger insight of how acustomer and its supplier perceive and manage the business relationship.

    Methodology

    The study has a qualitative approach and is built on a case-study withinterviews from one supplier and three customers, to gain a biggerinsight of purchasing and to be able to see how each party perceive thebusiness relationship.

    Conclusion

    The results of the study show that medium-sized enterprises work a lot tomake purchasing more efficient and they all believe that purchasing is avalue adding function. Therefore they should not be classified in thesame definition as small-sized enterprises. One of the most importantcomponents in a business relationship is trust and power should not beused.

  • 21.
    Källström, Johannes
    Linköping University, Department of Culture and Communication. Linköping University, Faculty of Arts and Sciences.
    Vi vilja vara svenskar!: Ecklesiologi och historik från Svensk-finska St. Mikaels församling i Tallinn 1919-19442014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    ”Vi vilja vara svenskar!” svarade Hjalmar Pöhl, dåvarande kontraktsprost i svenska kontraktet i Estland, när han i oktober 1941 precis fått lämna landet och står inför en nystartad räddningskommitté för estlandssvenskarna i Stockholm. I Estland hade nazisterna kört ut Sovjet, innan det hade landet och kyrkan gått igenom en fruktansvärd tid med deporteringar, avrättningar och förföljelse. Frågan som besvarades gällde huruvida man nu ville leva under tyskarna eller få tillbaka en fri estnisk stat. Inget av detta intresserade kontraktsprosten – han ville vara svensk. Orden ringar väl in något som under 1900-talets första hälft präglat arbetet inom hela den estlandssvenska minoriteten och St. Mikael församling; arbetet för svenskhetens bevarande i öst.

    Denna uppsats avser att försöka ge en historisk bild av St. Mikaels församling och för den estlandssvenska minoriteten under åren 1919-1944, även om tiden innan i viss mån måste skildras för att skapa en helhetsbild. Jag har i mitt arbete främst utgått från Riksarkivets samlingar runt St. Mikaels församling, Hans Pöhl, Ivar Pöhl och Hjalmar Pöhl, prosten Erik Petzäll och Elmar Nygren. Till detta kommer polis- samt säkerhetspolisens utredningar om händelserna runt den estlandssvenska evakueringen.

    Jag avser att skildra St. Mikaels församlings konstitution och uppbyggnad, dess huvudsakliga verksamheter och ledande personer samt extraordinära händelser. Jag kommer också belysa det nära samarbete som försiggick mellan Svenska Kyrkan, församlingen och den estniska lutherska kyrkan EELK. Vi skall se att två svenska ärkebiskopar, Nathan Söderblom och Erling Eidem personligen engagerat sig i arbetet ända ned på detaljnivå.Jag vill i mitt arbete komma åt församlingens självuppfattning, deras ecklesiologi. Därför inleds arbetet med en ecklesiologisk teoriöversikt. Jag väljer i arbetet som metod en syntes mellan induktion och deduktion som innebär att empiriskt material, ecklesialiteten, reflekteras mot en teoretisk fond, för att urskilja vad som kan kallas en implicit ecklesiologi. Min teoretiska fond blir Martin Luthers kyrkosyn, St. Mikaels församling kallade sig luthersk-evangelisk. Avslutningsvis utför jag analysen, filtrerar empiri genom Luther och stämmer av vad som är i paritet med denne och vad som avviker – för att därmed se vad som verkligen föreligger. Vi skall se att St. Mikaels församling i stort är en luthersk församling – men begreppet etnicitet griper igenom hela verksamheten. Församlingen och den estlandssvenska gruppens strävan efter ett bättre liv i en synnerligen hård tillvaro är symbiotiska. Att vara svensk och evangeliskt-luthersk troende är samma sak och framträder som en vital väg för överlevnad under hela perioden. Under inledningsfasen med kontakter mot Sverige, vid 1900-talets början, är folkgruppen betydligt eftersatt. Gideon Danell, svensk språkforskare, skriver hem och ordinerar ett recept:

    Svensk gudstjänst, svensk själavård och svensk folkskola. Denna inställning skall präglas alla inblandade, från estlandssvenskt och svenskt håll.

    Vid överflyttningen till Sverige under 40-talet är församlingens präster, Ivar och Hjalmar Pöhl ledande i arbetet. I de flesta skriftliga beskrivningar är de antingen strukna eller svartmålade. Jag anser mig ha nog med information för att nyansera och utmana denna bild.

  • 22.
    Persson Olsmyr, Sofia
    Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, The Institute of Technology.
    Scheduling of luggage handling staff at Landvetter airport2014Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Schemaläggning är en utmaning för de flesta företag och så även hos ground handling bolaget Aviator på Göteborg Landvetter Airport. Flygbranschen är en komplex bransch som påverkas av konjunkturer och efterfrågan. Branschen präglas av hård konkurrens och för Aviator är personalkostnaden den dyraste posten vilket gör schemaläggningen viktig, men svår. De upplever problem med sin schemaläggning som läggs på längre sikte i fyra veckors perioder, främst tidsåtgången det tar att schemalägga. Tidsåtgången beror på många olika faktorer som skall tas i hänsyn, så kallade input. Examensarbetet har utförts på uppdrag av Aviator, Göteborg Landvetter Airport, främst Mathias Johansson som är stationschef och schemaläggare. Syftet är att kartlägga processen av vilka input de använder sig av och hitta svagheter och styrkor i deras schemaläggning. Den metod som använts vid undersökningen av problemet har huvudsakligen varit litteraturstudier, observationer och en intervju. Det har resulterat i en processkartläggning av schemaläggningen och en SWOT-analys som identifierar svagheterna och styrkorna. Resultatet är en rekommendation till företaget om hur de skall gå tillväga för att få en mer tidseffektiv schemaläggning samt reducera kostnader och slöseri. Några av de förslagna förbättringarna är att genomföra ett system som samlar all data på ett ställa, anställa en person som enbart jobbar med schemaläggningen, se över sina processer oftare samt eventuellt börja använda sig av bemanningsföretag för att kunna hänga med i de olika konjunkturerna.

  • 23.
    Gråd, Erik
    et al.
    Linköping University, Faculty of Arts and Sciences. Linköping University, Department of Management and Engineering, Economics.
    Riis, Sonny
    Linköping University, Faculty of Arts and Sciences. Linköping University, Department of Management and Engineering, Economics.
    Att dela eller inte dela?: Vad som möjliggör respektive förhindrar produktdelningssystem2014Student paper other, 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Product sharing systems is recently starting to become a more common phenomenon. Carpools exist in more than 40 Swedish towns and both Stockholm and Gothenburg have established bicycle sharing systems. Other products for which sharing systems have been established throughout Sweden are clothing and tools. From the point of view of the consumer, product sharing systems is a form of consumption which can be placed somewhere in between renting and privately owning a product, where the consumers usually pay a membership fee or a monthly fee to have access to the products whenever they need them. The concept is relatively new, and there are many products for which product sharing systems do not exist. As a consequence, previous research in the area is scarce, with the exception of car pools. However, some research discussing product sharing systems in general exists, such as the research by Lamberton & Rose and Mont. In this thesis, previous research is further developed by analyzing what enables and hinders product sharing systems, and for what type of products these systems are suitable. A mix between a quantitative and a qualitative method is used, as both interviews with owners of sharing systems and a questionnaire survey with potential consumers are carried out. To analyze the concept, institutional and behavioral economic theory is used as well as traditional microeconomics. Both the interviews and the survey indicate that the general knowledge of product sharing systems is low and that it is hard in general for companies to reach out to new users. For the consumers, one of the biggest problems is the perceived risk of not having access to the products when they are needed. Another conclusion is that products for which variety is desired, such as clothing and books, that are used frequently, are especially suitable for product sharing systems.

  • 24.
    Bygdén, Johan
    et al.
    Linköping University, Department of Management and Engineering, Quality Technology and Management. Linköping University, The Institute of Technology.
    Johansson, Henrik
    Linköping University, Department of Management and Engineering, Quality Technology and Management. Linköping University, The Institute of Technology.
    Värdeflödesanalys i processindustri med kontinuerlig tillverkning: Fallstudie på Billerud Korsnäs AB Skärblacka2014Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Lean production is a philosophy which purpose can be simplified as: Produce more products with the usage of fewer resources by eliminating waste in the system. At the beginning it was part manufacturing companys who started using the different techniques within lean but in recent years lean has been widespread and applied in service organizations like health care for example. The development of lean against the process industries has however been slower which implies that the companys within that industry still have a lot to learn when it comes to lean. Some critics argue that the possibilities of applying lean techniques in the process industries are limited. Others claim that you just need a different approach and that the lean methods might need to be adjusted so that the conditions of the industry are considered.

    When the main purpose of lean is to eliminate waste from the system there is a generally accepted method called value stream mapping (VSM). The method is used in order to map the material- and information flow and hence identify the waste existing in the system. There is a limited amount of literature considering the applicability of this method in the process industry, whereupon this study comes in handy. This master thesis was carried out as a case study at BillerudKorsnäs Skärblacka’s craft paper production and the purpose is to investigate how VSM can be applied at this type of production in order to eliminate waste. The study resulted in a description of the conditions necessary for the method to be used successfully, how the distinctive characteristics of the process industry affect the implementation of the method and which modifications that needed to be done.

    When the material- and information flow was mapped a number of problem areas were identified where the waste in the system was revealed. It was then detected that the biggest focus should be on the material flow and the production equipment. The identified problem areas lead to a number of improvement suggestions whose purpose is to decrease the amount of waste in the system. Recommendations were also proposed, discussing how the company henceforth can work iteratively with value stream mapping as a part of a process with continuous improvements.

    After the method was carried out conclusions could be drawn. The applicability of the method was considered as good due to problem areas and waste was identified and presented in a lucid way. Though, the data collection and calculation of the included parameters were very time-consuming. The reasons for that were that this was the first time the method was used at the company and the fact that all the data was stored in different systems. With continued mappings of the value stream the data collection and calculation will be less time-consuming parts due to all the formulas are already specified and lessons can be learned from the performance of this study. Due to the fact that radical changes of layout or flow pattern are hard or even impossible to carry out in this kind of industry the main focus of the VSM should be the mapping where the purpose is to identify existing problems and wastes. Hence the output from this method could be foundation for future investments and improvements.

  • 25.
    Andersson, Victor
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Björs, Matilda
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Internal communication of a brand - A comparative study within the municipality of Norrköping2014Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The municipality of Norrköping is a large organization with lots of different areas of expertise. To make sure that the values are the same throughout the organization is a heavy task but important if you want the brand to be communicated in the right way in all instances of the organization. An internal review of the employees opinions takes place every other year with the last one taking place in 2013. The results from the review made the municipality of Norrköping realise that they needed to increase their internal work with brand knowledge. The municipality of Norrköping took action and created a platform of communications called Let´s Create Norrköping. The problem they stand before now is that they're not sure if the employees have interpreted the information the correct way regarding the brand. This case study aims to investigate how the brand Norrköping is communicated throughout the plattform Let´s Create Norrköping and how the employees perceives the brand of the municipality of Norrköping.

    To answer the cause of the report a data collection has been made with interviews divided into two parts. The first part consists of an interview with Tina Vennerholm, brand developer at the communications department of the municipality of Norrköping. The main objective of this interviews was to conclude the main objectives of the platform Let´s Create Norrköping. The second part was conducted with five employees within the organization of the municipality of Norrköping. It was conducted to conclude their point of view of the platform Let´s Create Norrköping. Conclusions that can be drawn from the study include that the employees lack the presence of the representatives of the municipality of Norrköping at their working places. The employees have a positive opinion regarding the platform Let´s Create Norrköping although they have not received any internal information regarding the plattform. The reason to their positive opinions ought to be that they have been affected by external marketing regarding the plattform. This leads to the employees having a hard time with implementing the message of the platform in their work.

    Recommendations given to the municipality of Norrköping is to be visible at the various working places, to show the worker which people who are responsible for the communication at their workplace. to give the employees a personal connection to the source of the information that is given which makes it easier for the worker to accept and implement the information.

    The employees all have positive connections to the city of Norrköping. That is why the conductors of this study recommend that the municipality of Norrköping should make a connection to the city with the work that is made by the employees on all the different areas in the organization. This is to engage and motivate the employees and make them see and understand the connection between the city and the organization and the part that they play in it.

  • 26.
    Holm, Anna
    Linköping University, Department of Computer and Information Science. Linköping University, Faculty of Arts and Sciences.
    Making or breaking personnel with documentation2014Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    In order to support a standardized and uniform documentation one can use different types of aids such as influencing attitudes, provide training and customize tools for documentation. This study looks at documentation in elderly care from the personnel’s perspective and seeks to better understand their view of and experience with documentation in relation to the aids described above. By holding semi-structured interviews with 12 people working with elderly care qualitative data were obtained and later analyzed using Interpretative Phenomenological Analysis (IPA). A range of different thoughts and attitudes towards documentation were found, some that could facilitate documentation, but also some that could hinder a good documentation practice. Also different insecurities were found such as lack of experience/knowledge about documentation, technology or language. Colleagues are a great resource for helping and educating personnel but it might be hard for them to explain some things they do if they aren’t aware of how they do it. It might also take time to readjust to new procedures such as a common information structure, especially for the experienced workers that have formed routines for how to do things. Contextual factors are important and the documentation systems have the ability to make or break the users.

  • 27.
    Axelblom, Alec
    Linköping University, Department of Management and Engineering. Linköping University, Faculty of Arts and Sciences.
    Mjuk makt i en förändrad värld2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this essay is to examine the concept of ‘soft power’. Soft power is a relatively new term that was coined by the political scientist Joseph Nye in the year 1990. Since then this new term has changed how we today perceive international power. Using attraction and appeal actors use soft power to try to gain influence. The opposite of soft power, hard power, is another tool that states use to gain influence by trying to induce or threaten. These two tools and their usefulness for a state have become a topic of debate in the current international politics discourse.

    The concept of soft power is constantly evolving and it is being shaped by experts and politicians around the world who embrace the term. Soft power does have its weaknesses; it is hard to measure and analyze, and it is also hard for a state to use soft power actively. But it has become a tool that is vital for states in the 21st century to maximize the effectiveness of one’s foreign policy.

    The empirical material in this essay is partially based on Swedish soft power, but also includes various greater powers and their soft power. Using qualitative content analysis I have tried to discern what is relative to the essay and what are the most vital things to include.

  • 28.
    Jonsson, Emil
    Linköping University, Department of Electrical Engineering, Information Coding. Linköping University, The Institute of Technology.
    Modeling and Simulation of Cells2011Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The aim of this thesis is to create a computer program that simulates the motionof cells in a developing embryo. The resulting simulator is to be used by in the CellLineage project (Robert Forchheimer et al.) as an input to their genetic model, themeta-Boolean model [18]. This genetic model is not the focus of this work. Sincethe simulated system is highly complex, with fluids and deforming soft bodies, itis unfeasible to simulate the system in a physically realistic manner while keepingexecution time to reasonable values. Therefore some physical realism is sacrificedin favor of simulation stability and execution speed.The resulting simulator, Cell-Lab, uses Position Based Dynamics (PBD) [17] toimplement a number of different models for the cell’s mechanical properties. PBDis well suited for this purpose since it, while not taking excessively long time toexecute, guarantees an unconditionally stable simulation. The simulator includesa hard eggshell surrounding the cells. Cells can be split during the simulation,emulating mitosis. There is also the possibility to simulate cell adhesion usinga cadherin like mechanism. To control when and how cells are split and fetchinformation about the current state of the simulation there is an interface to beused by external applications. The meta-Boolean model can be implemented insuch an application

  • 29.
    Andersson, Emil
    Linköping University, Department of Management and Engineering, Environmental Technology and Management. Linköping University, The Institute of Technology.
    Material Flow and Stakeholder Analysis for a Transfer & Recycling Station in Gaborone, Botswana2014Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Landfilling waste material is still one of the most common methods to take care of waste in a big part of the world. Gaborone, the capital of Botswana located in the southern part of Africa is no different in this way. The major part of all waste is landfilled in Gaborone and there is only a minor part of all collected material that is recycled. One solution that earlier studies suggest is to build a transfer and recycling station in the city of Gaborone that can contribute to a more sustainable waste management. This study aims to identify the major waste streams of recyclable waste and also the major stakeholders that are active in this area through an exploratory study involving interviews, a workshop and a survey. The result of this thesis can hopefully assist in the preparations for such a transfer station. The conclusions of this study are many and contains of both hard facts and also loose ends that can contribute to pursue further studies. The first important result is that all the waste collection companies transports everything they collects to a landfill and it is only recycling organizations that are working with collection and recycling in Gaborone. These recycling organizations are a few but smaller compared to the waste collection companies in collected amounts of material. Besides these collection organizations, Gaborone City Council, the local municipality works with collection of household waste and the collaboration between these three groups that operates in the same environment is very poor. All the interviewed stakeholders showed a positive interest in the transfer and recycling station but there is only a small part of the commercial business in Gaborone that believes in a more serious waste management than landfilling. Despite that one major shopping mall actually sort out recyclables and saves 30% in waste management costs thanks to that. Another issue is the prevailing cultural contradictions that is obvious among the organizations in Gaborone. The last two bigger issues is the tremendously dull political bureaucracy that is appearing in Botswana and also that voices are raised that corruption is great beneath the surface.

  • 30.
    Johansson, Marcus
    Linköping University, Department of Computer and Information Science. Linköping University, Faculty of Arts and Sciences.
    Trollbridge: Order effects, and moral dilemmas with three choice alternatives2014Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Research about morality heavily relies on using questionnaires and moral dilemmas when answering different research questions. Despite this very little focus has been put on how the order of presentation alters response frequencies. A test was put forth to test if there is any effect based on order of presentation, and despite that it has been found before, no such effects were found. Why no order effects were found here are not clear, but it shows that it is something that needs to be controlled for in research on moral dilemmas. Secondly, in moral research a lot of focus is put on moral principles to use as explanation for whole groups of respondents, such as deontology, utilitarianism and the DDE. To see if these are strong indicators of what humans will do in these moral dilemmas, two versions of the trolley and footbridge dilemma was put together, where all three response alternatives were presented at once, that is push the stranger, pull the switch or do nothing. In one of these conditions one person are on the side tracks in the switch condition, and in the second three workers are on the side tracks. It was found that although individuals motivate their actions in line with utility and the DDE, less people decide to act when three alternatives are presented. This shows that people are not consistent with their moral evaluation, and that it might be hard to predict what one will do in these situations.

  • 31.
    Nordin, Fredrik
    et al.
    Linköping University, Department of Management and Engineering, Information Systems. Linköping University, The Institute of Technology.
    Larsson, Henrik
    Linköping University, Department of Management and Engineering, Information Systems. Linköping University, The Institute of Technology.
    De agila principerna: Fortfarande aktuella och tillämpbara ett decennium senare?2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Agile methodology and models has a wide group of supporters among organizations and companies and is often seen as innovative. The agile methods are now 13 years and a lot has happened since then, both in our ways of working and in the technology we use. The agile methodology is based on two documents, the agile manifesto and the agile principles. The principles embodies the manifesto and in our view creates a strong connection with reality and by that a strong connection with how software is developed. To find out if the principles still are viable and used among developers and if a revision of them is needed we performed a survey based on four interviews and a previously conducted quantitative study.

    The conclusion of this survey is that the principles are used and works well in development projects and are well thought of by the developers but there is still a need for a revision. How this revision would look and when it should be done is hard to say, the need for it aren’t urgent because of the general support of the original principles are still strong. There are a couple of different areas that our respondents point out as important where quality and documentation stands out as the most important that organizations working agile have to focus on in their daily work. Our survey and the study we used as an inspiration ends up in mostly the same conclusions with only few differences, which we see as a confirmation that our study reflects the developers’ view.

  • 32.
    de-Wall Larsson, Pernilla
    Linköping University, Department of Computer and Information Science. Linköping University, The Institute of Technology.
    Applikationsutveckling baserad på mobilkameran2014Independent thesis Basic level (university diploma), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    Mobile application demands a lot of attending to the program code. There are lots of different development platforms that can be used for development. Not only for the specific operating system there are also lots of different cross-platforms that should minimize the amount of program code. This report is comparing the way of creating an android application in the cross platform Xamarin versus in the platform Eclipse using the Android plugin. It contains a part about the architecture of Android and its functions. The report will show the aspects of why Eclipse feels like the more technical and economic platform. The company SysPartner in Mjärdevi has recently started to develop some mobile applications that uses the mobile phone like a scanner. In order for the phone to read text from a picture it needs to be in high quality and sharp. Sometimes it can be hard to take a good picture and therefore this work involves looking into the possibilities to support the user to capture a better picture.

  • 33.
    Hanssen Seferidis, Johan
    Linköping University, Department of Computer and Information Science. Linköping University, The Institute of Technology.
    Geoexplorer: A framework for black-box testing and scraping information from geographic services.2013Independent thesis Basic level (university diploma), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    This is a report on the development of a free open-source framework. The framework is meant to be used to mainly black-box test and/or scrape information from a geographic service like Google Places, Facebook Places or Foursquare. In reality any service that is based on geographic coordinates can be used with the framewok.

    Amongst others, the framework offers functionalities like visualisation on-the-fly and logging of different aspects of the service. There are a few similar tools scattered on the world-wide web, but they usually are hard to find and if they are found, they either are not open-source, free or they lack in functionality. Another major drawback is that the available solutions are very generic, and thus limiting their capabilities. The work described here is an attempt for a concise, easy to use, extendible framework solely focused on geographic services.

    In this report, the technologies used are demonstrated, while at the same time the reasons are given as to why a specific technology was selected in each case. Some documentation is also presented and a few references to the actual code-base in case someone wants to extend Geoexplorer or use it at their organization.

  • 34.
    Hanssen Seferidis, Johan
    Linköping University, Department of Computer and Information Science. Linköping University, The Institute of Technology.
    Geoexplorer: A free open-source framework for black-box testing and scraping information from geographic services2013Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    This is a report on the development of a free open-source framework. The framework is meant to be used to mainly black-box test and/or scrape information from a geographic service like Google Places, Facebook Places or Foursquare. In reality any service that is based on geographic coordinates can be used with the framewok.

    Amongst others, the framework offers functionalities like visualisation on-the-fly and logging of different aspects of the service. There are a few similar tools scattered on the world-wide web, but they usually are hard to find and if they are found, they either are not open-source, free or they lack in functionality. Another major drawback is that the available solutions are very generic, and thus limiting their capabilities. The work described here is an attempt for a concise, easy to use, extendible framework solely focused on geographic services.

    In this report, the technologies used are demonstrated, while at the same time the reasons are given as to why a specific technology was selected in each case. Some documentation is also presented and a few references to the actual code-base in case someone wants to extend Geoexplorer or use it at their organization.

  • 35.
    Saleem, Hassan
    Linköping University, Department of Physics, Chemistry and Biology, Nanostructured Materials. Linköping University, The Institute of Technology.
    Thermal Stability of cubic and nanocrystalline arcevaporated TiCrAlN coatings2014Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    (TixCryAlz)N coatings were deposited on WC-Co substrate using cathodic arc evaporation technique to investigate phase transformation, thermal stability, and high temperature mechanical properties. Two compositions Ti0.34Cr0.33Al0.33N and Ti0.24Cr0.02Al0.74N were studied and compared with industrial standard hard TiAlN coating. These compositions were annealed at 800 oC up to 1100 oC. X-ray diffractogram showed a mixture of cubical and hexagonal phases in as-deposited state for high Al content composition. Differential scanning calorimetry showed that spinodal decomposition starts late compared to TiAlN coating. The results from nanoindentation did not show age hardening in Ti0.34Cr0.33Al0.33N composition while composition Ti0.24Cr0.02Al0.74N showed a significant increase in hardness compared with TiAlN coating. Also the Ti0.24Cr0.02Al0.74N retains its hardness over a wide temperature range while TiAlN coating hardness decreases after annealing at 900 oC. Upon annealing at 1400 oC, the coating decomposes into equilibrium phases i.e., c-TiN and h-AlN while Cr found to be in oxides form. HRTEM results revealed that the coating consists of nanocrystalline grains with defects rich regions.

  • 36.
    Linde, Elin
    et al.
    Linköping University, Department of Medical and Health Sciences, Division of Physiotherapy. Linköping University, Faculty of Health Sciences.
    Gustafsson, Lina
    Linköping University, Department of Medical and Health Sciences, Division of Physiotherapy. Linköping University, Faculty of Health Sciences.
    Sjukgymnasters upplevelser av arbete på särskilt boende för äldre: En intervjustudie2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: The conditions for the physiotherapists’ work in housing for the elderly vary depending on number of care recipients, the availability of the physiotherapists and the resources provided at the county level in Sweden. Previous studies have shown that the lack of resources makes the work difficult for the physiotherapists. Moreover, it is hard to meet the needs of individual care recipients when physiotherapists have the medical rehabilitation responsibility for a large number of care recipients. Rehabilitation is carried out on a specific level and a general level and often delegated to care assistants. Purpose: The aim of this study was to examine physiotherapists’ perceptions of their work in housing for the elderly. Method: Seven physiotherapists working in houses for the elderly were interviewed with the help of a semi-structured interview guide. The interviews were analyzed with qualitative content analysis. Results: The analysis revealed five categories: controlling factors, priorities, cooperation around the care recipient, the breadth of the work and self-image and status. Conclusion: The participants’ perceptions of work in housing for the elderly were that the job was fun and varied but influenced by stress and lack of resources. The work was perceived as consisting of a lot of prioritizing; however, the grounds on which the decisions were made varied as did the perception of support from guidelines. The participants reported that they desired a well-functioning working relationship with the care assistants because the physiotherapy inputs were often delegated to them.

  • 37.
    Claar, Moa
    et al.
    Linköping University, Department of Clinical and Experimental Medicine. Linköping University, Faculty of Health Sciences.
    Larsson, Lina
    Linköping University, Department of Clinical and Experimental Medicine. Linköping University, Faculty of Health Sciences.
    Ironi: Akustikens roll vid uppfattande av ironi och andra emotionella uttryck2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Have you ever experienced doubt in whether a person is being ironic? It is hard to identify irony, especially when you don't know the context. Acoustic features, such as pitch, intensity and duration, have in previous studies been detected to explain differences between emotions. Irony and sarcasm have been found to have a higher pitch, intensity and longer duration than other emotions. In this study 20 people listened to 26 samples, from the test material made by Peder Palmér from the Institution of Behavioral science and Teaching in the University of  Linköping, and were asked to determine which emotion that was used in each sample. Irony, sarcasm, anger, happiness and seriousness were portrayed emotions in the audio files. The results showed that the emotion happiness was the easiest and women were better able to determine this emotion. Acoustic differences were analyzed in Praat, the acoustic parameters used were based on previous surveys. Lower pitch, intensity and a longer duration were found to be characteristic for irony and sarcasm in this research. The outcome does not correlate with several of previous studies, probably because previous studies are not made in Swedish but one survey in German shows similar results. Another acoustic feature that was found in our survey is that the penultimate word has longer duration in irony and sarcasm than in other expressions.

  • 38.
    Woxström, Sanna
    Linköping University, Department of Culture and Communication. Linköping University, Faculty of Arts and Sciences.
    Som en hård spagetti som blivit kokt: Gymnasieelevers upplevelser av muntlig framställning2014Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    I dagens samhälle blir människans kommunikationsförmåga allt viktigare, så även i skolan. Därför är syftet med denna undersökning att ta reda på hur gymnasieelevers upplevelser av muntlig framställning ser ut. Jag avser även undersöka vilka faktorer som påverkar elevernas upplevelser och hur undervisningen kan organiseras så att elevernas upplevelser blir mer positiva. För att ta reda på detta har enkäter med öppna frågor använts. Efter en analys av enkätsvaren framkom att eleverna går att dela in i fyra kategorier. I den första är elevernas upplevelser positiva, i den andra känner de en stark nervositet som de dock kan kontrollera, i den tredje återfinns talängsliga elever och i den fjärde kategorin har eleverna varken positiva eller negativa upplevelser. Vidare visar elevernas svar att flickorna upplever mer ångest och oro i samband med muntlig framställning än pojkar och att framför allt eleverna på estet- och samhällsvetenskapsprogrammet är de som har de mest positiva upplevelserna. Andra saker som eleverna menar påverkar upplevelserna är publiken, klassrumsklimatet, hur väl förberedda de är, hur vana de är och vad de talar om. Läraren bör ta hänsyn till elevernas upplevelser och de faktorer som påverkar den när han eller hon organiserar undervisningen kring muntlig framställning. Dessutom förespråkar tidigare forskning en systematisk talträning och att eleverna får grunder i retorik och i den retoriska arbetsprocessen. 

  • 39.
    Axelsson, Peter
    et al.
    Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, The Institute of Technology.
    Petersson, Jonas
    Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, The Institute of Technology.
    Remote Tower Centre - Configuration and Planning of the Remote Tower Modules2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Today, many small aerodromes have a hard time surviving economically, and amongst the largest cost is air traffic control. Airlines are cutting costs where they can, and many times this affects the aerodromes as well, e.g. when airlines decide to park remotely instead of at the gate. The project called Remotely Operated Towers, initiated by SESAR and run by Saab and LFV, is aiming to address this problem. The project revolves around remotely providing ATS to aerodromes where it is deemed suitable. A big challenge in this project is how to assign aerodromes to remote tower modules in the remote control centre. There are many ways to do this, but there is only a few ways to do it to achieve the least amount of modules. This thesis aims to find an optimal solution to the challenge mentioned above. The thesis resulted in a model where the user can provide the input of choice, i.e. aerodromes with associated ATS operating hours and movements, for a specific period – and receive the assignment schedule for the modules, saying exactly which aerodrome are to be controlled by which module at what time.

  • 40.
    Hamnqvist, Fabian
    et al.
    Linköping University, Department of Management and Engineering, Business Administration. Linköping University, Faculty of Arts and Sciences.
    Svensson, Emma
    Linköping University, Department of Management and Engineering, Business Administration. Linköping University, Faculty of Arts and Sciences.
    Bokakademin i Östergötland AB möter framtiden: En studie av studenters köpbeteende vad gäller kurslitteratur och ett förslag på marknadsföringsstrategi för Bokakademin2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Bakgrund

    Denna kandidatuppsats presenterar en marknadsundersökning genomförd vid Linköpings universitet. Fokus har legat på en specifik butik på Campus Valla och dess konkurrenssituation samt kundkrets, nämligen en butik tillhörande företaget Bokakademin i Östergötland AB, Bokakademin fortsättningsvis. Denna marknadsundersökning har genomförts våren år 2013 under författarnas sista termin på sin kandidatutbildning inom ämnesområdet företagsekonomi.

    Företagets VD har uppfattningen om att företaget står inför en hård konkurrens och vill därför informera sig om marknaden. Författarnas avsikt med denna undersökning har varit att kunna ge företaget en ökad förståelse för sin konkurrenssituation och ny kunskap om sina kunder. Bokakademin bedriver försäljning av kurslitteratur till studenter och på grund av internets utbredning råder idag mer transparens på marknaden än tidigare. Forskning har visat att kunder har blivit mer krävande och att de inte uppvisar en hög grad av lojalitet till återförsäljare, det råder alltså ökad konkurrens och en minskad kundlojalitet på den marknad som Bokakademins är verksam på. Av dessa skäl menar författarna att det är av relevans och intresse att undersöka och studera detta ämne, detta styrks av att tidigare forskning har bedrivits inom området.

    Syfte Syftet med denna uppsats är att undersöka studenters köpbeteende vid köp av kurslitteratur samt att utifrån denna information föreslå en lämplig marknadsföringsstrategi för Bokakademin att möta den nya marknadssituationen.

    Metod Den metodansats som uppsatsen har utgått ifrån är av induktiv karaktär då den har haft sin utgångspunkt i empiri, den empiriska data som har samlats in har legat till grund för den marknadsföringsstrategi som presenteras i uppsatsen. Det underlag som uppsatsen har baserats på har i första hand utgjorts av en enkätundersökning omfattande 200 respondenter ur Bokakademins potentiella kundkrets och målgrupp. Dessa respondenter har fått besvara frågor rörande deras köpvanor och köppreferenser vid köp av kurslitteratur, en kvantitativ undersökning har med andra ord genomförts. Utöver detta har en intervju med bokhandelns VD samt åtta stycken uppföljningsintervjuer med utvalda respondenter genomförts. Samtliga intervjuer har varit av mer samtalsliknande karaktär och kan anses utgöra kvalitativa informationskällor. Genom intervjuerna har författarna erhållit ytterligare data angående Bokakademin och dess kundkrets. För att uppnå ett mer kvalitativt djup i denna undersökning har författarna valt ut en respondent för att sedan jämföra denna persons uppfattning om hur mycket pengar denne spenderar på kurslitteratur per termin mot vad denne, enligt inhämtad kurs- och prisinformation, borde spendera på kurslitteratur per termin. Vad gäller den teori som presenteras i denna uppsats utgörs den främst av grundläggande teorier presenterade i Jobber och Fahy (2009) samt Blackwell et al. (2006). Denna litteratur har kompletterats med teoriavsnitt som återger teorier samt forskning av exempelvis Kotler (1999), Kotler et al. (2013), Wilson et al. (2012), Foucault och Scheufele (2002) samt Parment (2013).

  • 41.
    Malekzadeh, Mahnaz
    Linköping University, Department of Computer and Information Science. Linköping University, The Institute of Technology.
    Design Optimization of Soft Real-Time Applications on FlexRay Platforms2013Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    FlexRay is a deterministic communication bus in the automotive context that supports fault-tolerant and high-speed bus system. It operates based on the time-division-multiple-access scheme and allows transmission of event-driven and time-driven messages between nodes in a system. A FlexRay bus has two periodic segments which form a bus cycle: static segment and dynamic segment. Such a bus system could be used in a wide area of real-time automotive applications with soft and hard timing constraints.

    Recent research has been focused on the FlexRay static segment. As opposed to the static segment, however, the dynamic one is based on an event-triggered scheme. This scheme is more difficult to be temporally predicted. Nevertheless, the event-triggered paradigm provides more flexibility for further incremental design. The dynamic segment is also suitable for applications with erratic data size. Such advantages motivate for more research on the dynamic segment.

    In a real-time system, results of the computations have to be ready by a specific instant of time called deadline . However, in a soft real-time application, the result can be used with a degraded Quality of Service even after the deadline has passed while in a hard real-time system, missing a deadline leads to a catastrophe. This thesis aims at optimizing some of the parameters of the FlexRay bus for soft real-time applications. The cost function which helps to assess the solution to the optimization problem is the deadline miss ratio and a solution to our problem consists of two parts: (1) Frame identifiers to messages which are produced at each node. (2) The size of each individual minislot which is one of the FlexRay bus parameters.

    The optimization is done based on genetic algorithms. To evaluate the proposed approach, several experiments have been conducted based on the FlexRay bus simulator implemented in this thesis. The achieved results show that suitable choice of the parameters which are generated by our optimization engine improves the timing behavior of simulated communicating nodes.

  • 42.
    Stoltz, Jonathan
    Linköping University, Department of Computer and Information Science. Linköping University, Faculty of Arts and Sciences.
    Naturljud inomhus - En pilotstudie i tre fall2013Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    It's an everyday experience shared by many that nature can be of help in relieving pain, reducing stress, support mental recovery etc. In the last three decades or so this experience has also found support in a large number of scientific investigations. Among other things the experience of nature has been shown to reduce stress and pain in patients and to boost concentration and reduce impulsive behavior in children. Most of this research however has mainly been concerned with the visual modality. In this thesis the aim has been to focus on the auditory modality in this context by trying to reveal some effects on people from the exposure of nature sounds played indoors in three different environments: a grammar school class room, a kindergarten play room and a post-surgery wake up room at an intensive care unit. The results from the class room revealed a great difference among the children in how they perceived the sounds and how the sounds affected their self-reported ability to concentrate. The sounds of nature seemed to have no great impact on the kindergarten children; however the impact that was found was slightly positive. No impact on the investigated parameters of blood pressure, heart rate and respiration rate was found in the subjects at the intensive care unit; though the number of subjects was very small and they were all under heavy influence of anesthesia and analgesic drugs during the sound exposure. Also, the sound environment in the wake up room was very hard to control and was sometimes noisy.

  • 43.
    Lundgren, Jesper
    Linköping University, Department of Computer and Information Science. Linköping University, The Institute of Technology.
    Search-based Procedural Content Generation as a Tool for Level Design in Games2013Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The aim of this thesis is to evaluate the use of Search-based Procedural Content generation (SBPCG) to help a designer create levels for different game styles. I show how SBPCG can be used for level generation in different game genres by surveying both paper and released commercial solutions. I then provide empirical data by using a Genetic Algorithm (GA) to evolve levels in two different game types, first one being a space puzzle game, and the second a platform game. Constraints from a level designer provide a base to create fitness functions for both games with success. Even though difficulties with level representation make it hard for a designer to work with this technique directly, the generated levels show that the technique has promising potential to aid level designers with their work.

  • 44.
    Bovellan, Johan
    et al.
    Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
    Talani, Elias
    Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
    Analysis of electric quality2005Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    In todays society it’s usual with non linear loads in the electric power system. These loads contribute to the problems in the distriubution net.

    This student thesis will describe the different types of problems that can evolve with specific focus on a problem at Billerud AB Skärblacka. The purpose with the work was to see what causes a heat problem in one of their transformers.

    The report begins with a theoretic part that describes diffrent power quality concepts and informations areas necessary for the work.

    After the theoretical part the system is described and also the harmonics- and asymmetry measurments done with purpose to analyze the heat problem.

    The measurments were logged for a couple of days to be able to get information about different loads, to see if that had any effect on the amount of the harmonics.

    There is also a simulation of the system done, which indicates that the problem doesn’t have to depend on the frequency converter in the system.

    The investigation indicates that it can be the transformer that isn’t correctly dimensioned to handle the amount of harmonics from the frequency converter and that’s why it gets overheated.

    The result indicates that the amount of harmonics from the converter is as the supplier issued. A difficultiy during the work was to be able to measure on all connections, since the voltage and current are too high for the measurement equipment and also hard to reach in all areas of the system.

    Further measurments would lead to more specific analysis. The final part of the report gives different proposals for an upcoming work.

  • 45.
    Axenborg, Emelie
    et al.
    Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
    Strindlund, Lisa
    Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
    Teknisk användarhandbok för mindre tidningar2005Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The idea with a technical manual for small-sized newspapers is to facilitate the work for others that will create a newspaper. Students and other people who work in similar projects can easily use the manual. You can follow the work with newspaper production step by step with this manual. The report is introduced with a theoretical part that summarizes those concepts that are used in graphical design. The theoretical part is followed by the technical manual. The manual describes the technical part when it comes to creating a newspaper. Adobe InDesign and Adobe Photoshop are the programmes that are being used and the technical manual is based on these programmes.

    This project also includes a practical part. The University of Linköping works hard on recruiting new students. A newspaper is therefore created to promote Linköpings University and the two cities. The manual is also based on the practical part.

    Stockholm, Gothenburg and Malmö are all big cities. These cities are well known and get students anyway. Linköping and Norrköping are also rather big cities with great possibilities and ambitions, but they need to do investments for promotion to reach new students.

  • 46.
    Olsson, Sebastian
    et al.
    Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
    Strömberg, Sofie
    Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
    Modellering av 3D-miljöer utifrån geografisk data2005Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Simulations are used in many areas to support the understanding of events that can be hard to grasp or understand. Often huge amounts of data must be shown to the user. In cases where visual representations are to be used in real-time, non-vital data must be sorted out in order to maintain interactive frame rates.

    At the Swedish Defence Research Agency, FOI, simulation and visualization is used as a tool to study the complex interaction between measures and countermeasures in electronic warfare scenarios. To be able to use the vast geographical areas needed in the simulations, a tool has been developed.

    The result of this work is an application that, on the basis of geographical data, produces 3D landscapes suitable for real time simulation.

  • 47.
    Barkman, Martin
    Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
    Effective utilization of IT within a logistics facility2005Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Exel is a global company providing core expertise in contract logistics and freight management. Exel Sweden is currently in a growth phase and as part of its development, Exel strives to establish a homogenous IT structure. A vital part of an IT structure for logistics purposes is a Warehouse Management System (WMS). To make full use of a WMS, it is imperative to attain knowledge regarding the capabilities of these systems. Exel has on a global level decided to use a WMS from the WMS vendor Red Prairie. The intended system for Exel Sweden is a budget version, containing only the most basic functions, but with the possibility for future upgrades.

    The aim of this thesis is to create a knowledge base concerning the capabilities of such a system and with its help, analyze the need for WMS at the first site, LC GOT, where Red Prairie’s WMS is to be implemented.

    In the knowledge base I have defined a number of benefits that can derive from the effective utilization of a WMS. Each benefit is catalogued under one of the following categories:

    􀂃 Reduction of operational costs

    􀂃 Less capital tied up

    􀂃 Increased customer service levels Moreover different functions and technologies of WMS are identified and defined.

    In order to provide with a holistic view of the potential role of a WMS in warehouse processes, these processes are presented with descriptive flowcharts. (This is the public version of the thesis and as a consequence it does not include the case study. The reason for this is that it contains sensitive information). In the case analysis, the specific needs for WMS at LC GOT are checked against the functions and technologies defined in the knowledgebase. Finally, Red Prairie’s responses to the needs of LC GOT are analyzed. The main conclusion of the case study is that the present need for WMS at LC GOT is, due to a very low workload, very rudimentary, limited to a few basic functions and technologies;

    􀂃 Inventory management

    􀂃 Basic transport administrative functions

    􀂃 Electronic Data Interchange (EDI)

    􀂃 Web interface technologies As a consequence of the low workload, substantial improvements should not be expected to derive from the implementation of the WMS.

    Red Prairie’s WMS is fully covering the present need for functions but does however lack EDI and web interfacing capabilities. The present system, GTS2000 provides with these technologies. Due to the high implementation costs for EDI, this capability should be

    EFFECTIVE UTILIZATION OF IT WITHIN A LOGISTICS FACILITY sustained by the old system, until financially motivated. It is however not suitable to

    maintain the web interface of the old system as it would practically double the administrative work. Despite the lack of expected improvements and problems related to lack of technologies, the new WMS will be a great asset in a possible, more work intensive future. But for this to be true, it needs to be effectively utilized with the appropriate upgrades. The conclusions of the thesis as a whole are that a WMS can deliver significant improvements to a warehouse if properly utilized. In order to achieve this, a number of factors have to be taken into consideration:

    􀂃 The technology factor: To facilitate most functions of a WMS, it needs to be supported by different technologies, of which Radio Frequency (RF) and Electronic Data Interchange (EDI) are the two most vital.

    􀂃Capacity: Many of the improvements a WMS can deliver are related to the reduction of operational costs. This is practically done by making different warehouse processes more efficient. If a warehouse is operating well below its maximum capacity there is not much for a WMS to make more effective.

    􀂃 Critical mass: The implementation of a WMS can be very cost intensive and the costs are not completely correlated with the warehouse size. A larger warehouse will also experience more considerable improvements than a smaller. As a consequence of this, a complete WMS can be hard to financially motivate for smaller warehouses.

    Even though some of the capabilities of a WMS can be difficult to financially motivate, other things have to be taken into consideration. The single most important factor is customer demands. On a highly competitive market like that of 3PL/4PL providers, the capabilities to offer the best possible services will always be imperative for success. The effective utilization of WMS and other IT systems is and will continue to be essential for attaining this success.

  • 48.
    Dahlberg, Christer
    Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
    Utveckling av en dynamisk webbsajt med interaktiva möjligheter2006Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Sales Partner Group is a company located in Nyköping. It is focused on education and recruitment in the sales market. The company contacted Linköpings University as they were in need of a new graphical profile, especially for the Internet. A new user-friendly and dynamic website with the purpose of grouping costumers, salesmen and employees together in one place, was what they asked for. In addition to a dynamic and user-friendly website they also wanted a website which should be easy to update, offer interactivity and give certain users a possibility to discuss and have access to important information in a personal community.

    The result is a database driven website that is combined of HTML, CSS, PHP and MySQL. The design is created in view of usability rules for the Internet and general guides for layout and design. To make the website accessible to a great extent, it is developed and tested in the two main web browsers Internet Explorer and Mozilla Firefox. An interface for administrating the website has been created as one of the requirements was an easy-to-update website. According to that a help manual in digital and printed format has been created to facilitate the use of the interface.

    The work took a great amount of time which mostly depends on the requirements of the website which changed throughout the project and the fact that things proceeded more slowly than expected. A clear and strict plan could have prevented this, but as similar project hasn’t been done before, it was hard to measure the amount of time each part of the project would take. Even though, both Sales Partner Group and I are very satisfied with the result.

  • 49.
    Hökerberg, Camilla
    Linköping University, Department of Management and Engineering, Carl Malmsten - furniture studies. Linköping University, The Institute of Technology.
    Intarsia i läder: Intarsiateknikens tillämpbarhet inom tapetserarens arbetsfält2012Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    This thesis examines the conditions for the intarsia technology’s applicability in the upholsterer’s field. I have by studying the different crafts and techniques in Intarsia gained a greater understanding of these and able to reflect on their use for upholstery tasks. After trying and comparing different techniques, materials and approaches and traded my experiments in a chair outfit I have come to the following: When comparing and evaluating the results it is evident that among the varying leather materials and adhesives I´ve tried there is no one more preferable, nor unpreferable, than the other. All materials included in my study works well on both arched and flat surfaces, on hard as well as on soft surfaces - under the circumstances for which I give a detailed account in my work. My experiments so far have also shown that both the approach I have chosen, cutting out the pattern by hand and laser cutting, are associated with problems that make the technology difficult in the current situation incompatible with the requirement of labor economics and precision. Punching is probably the most interesting technology, but the technology was not included in the study.

  • 50.
    Östervall, Daniel
    Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
    Energibesparing genom styrning av kontorsbelysning2009Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This report describes the work that's been made, in cooperation with Sapa Industriservice AB, to modernize the lighting installation in a specific office building at Sapa industrial park in Finspång, known as Building 80. The purpose of the work was to reduce the energy consumption of the lighting. As in many other old buildings nothing has been done to avoid unnecessary energy consumption and today's rising energy prices and tougher environmental standards requires an increased awareness of the energy consumption.

    The report begins with a brief theory section to clarify the methods available to control the lighting, followed by a description of the existing installation, how the specification for the lighting control was developed and how a test installation was carried out. The report is concluded by the results from the test installation and proposals on how to proceed with the work.

    The work has shown that there are big profits to do if the energy consumption is taken into account already in the planning of a new installation, and that it may be hard to achieve good results while trying to use the existing installation to reduce the investment cost during a renovation.

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