Change search
Refine search result
1234567 1 - 50 of 1183
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 1.
    Abdallah, Lana
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Industrial Economics.
    Persson, Mattias
    Blekinge Institute of Technology, Faculty of Engineering, Department of Industrial Economics.
    The effects of environmental uncertainty conditions on organisational innovativeness and performance of SMEs.2014Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    Innovativeness is considered to be an important factor for firm’s survival and their ability to compete in today’s market. Therefore, researchers have become more interested in studying innovativeness and its drivers. Studies have also showed that there’s a positive relationship between environmental uncertainty and innovativeness. Organisations are responsive to turbulent environments through innovativeness in order to stay competitive and improve performance. The purpose of this thesis is to rank critical environmental factor’s effect on organisational innovativeness of small and medium enterprises in Sweden, through investigating the impact of market/demand turbulence and technological turbulence on innovativeness. Additionally, we want to examine the relationship between innovativeness and business performance, as well as the indirect relationship between environmental uncertainty and performance. Based on previous literature, we have developed hypotheses and proposed a research model to study the formulated problems. Data for the study were collected from 50 SMEs in Sweden, through a survey with well-known scales and were analysed using regression analysis. The results of the study, reveal that environmental uncertainty has a positive effect on the innovativeness of SMEs. In addition, technological turbulence showed to have a positive significant effect on an SME’s innovativeness; however, contrary to general belief, market/demand turbulence did not have any prominent effect. Our findings also proved that innovativeness have a strong positive impact on business performance, and that only technological turbulence have an indirect influence on performance through innovativeness. This study aimed to contribute to the management a better understanding, of which conditions of environmental turbulences SMEs should adapt to, in order to increase their level of innovativeness. Keywords: environmental uncertainty, organizational innovativeness, performance, market/demand turbulence, technological turbulence, SMEs.

  • 2.
    Abdulla, Akar
    Blekinge Institute of Technology, School of Engineering.
    Estimating Erosion in Oil and Gas Pipe Line Due to Sand Presence2011Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    Transporting solid particles in oil and gas flow cause erosion damage to the pipeline and fittings. The aim of this thesis is to study the effect of impact velocity on the erosion damage in 90 degree long elbow by using two different erosion models namely, Oka model and E/CRC model. Those correlation applied at air-borne sand eroding, methane-borne sand eroding, mixed gas-borne sand eroding, and multiphase (gas- oil) borne sand eroding Inconel 625. The commercial computational fluid dynamics (CFD) code STAR-CCM+ is used to obtain the average and maximum erosion rate by using the above mentioned models and compared them with the previous results.

  • 3.
    Abel, Kathleen A.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Integrating Economics with a Strategic Sustainable Planning Method; To enhance decision making processes.2005Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    Abstract: The complexity of environmental, social, economical, and technological objectives creates a challenge for decision makers when prioritizing the right measures that will move a project or organization toward sustainability at least cost. Currently there are methods or tools available to assist in this decision making and through a strategic approach potentially enhance the process. The focus of this thesis is to evaluate how the quantitative nature of economic detail as a tool which has been informed by a strategic sustainable framework can contribute to the complex decision making process for sustainable development when prioritizing measures. A two- step matrix format is used to represent the proposed approach. The complexity of sustainable development issues for decision makers within Sweden’s energy sector provides a suitable case study to explain this approach. Karlskrona, Sweden district heat was chosen. The results revealed an enhanced decision making process utilizing the proposed approach in district heat thus ensuring organizational and social profitability as defined by, static and dynamic efficiency and equitable allocation. The thesis concludes that the suggested approach has the potential to enhance the decision making process for strategic sustainable development when prioritizing measures in district heat and may be universal in its application in many other sectors. However, further validation of the approach through testing in real life situations is recommended.

  • 4.
    Abrahamsson, Marcus
    et al.
    Blekinge Institute of Technology, Department of Mechanical Engineering.
    Magnusson, Christian
    Blekinge Institute of Technology, Department of Mechanical Engineering.
    Svensson, Henrik
    Blekinge Institute of Technology, Department of Mechanical Engineering.
    Evrat, Xavier
    Blekinge Institute of Technology, Department of Mechanical Engineering.
    Driving Module For Existing Flight Carts2002Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [en]

    We needed to design an electric-driven module to place underneath a serving-cart, to facilitate the work made by the cabin personal and thereby prevent work injuries.

  • 5.
    Aco, Dekan
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Tillverkningsekonomisk utvärdering av återvinning och återanvändning av blyfri mässing2018Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This master thesis is part of a larger project (Evochip), conducted at Lund University, faculty of engineering, Industrial Production Department (iProd). The project is in collaboration with AB Markaryds metallarmatur and Mistra innovation. In this work, a dynamic cost model has been developed to calculate the manufacturing costs of components made from recycled chips of lead-free brass from the manufacturing processes of AB Markaryds metallarmatur (MMA).

    In the current situation, all rejected details and waste materials are sent to the material supplier in southern Europe for recycling. The transport takes place by trucks and the recycling process is based on an energy-intensive melting step. Development projects are currently underway to reuse the chips without melting at sight at MMA´s facilities, but the cost per detail has been unknown for the company. With the help of this thesis, the manufacturing price will be presented. The manufacturing process is divided into a total of 11 different processing stations. To estimate the costs, Jan-Eric Ståhl's dynamic cost model is used. Necessary data and information have been collected using interviews with the employees of the company and through the company's own documentation regarding the production lines. In order to reduce the error margin in the results, suitable Monte Carlo simulations have been performed.

    The work is also based on a sustainability perspective. In addition to eliminating transportations by trucks and energy-intensive melting processes for the products, the work also promotes the use and reuse of lead-free brass by pressing metal chips to form new bars. All this in order to avoid leaded brass components due to the negative health effects caused by the lead.

    The component investigated in this work is a radiator valve called EVO 10. The valve is found in the company's lead-free standard range. The cost model in this project is dynamic to the extent that it could be applied in the future to other lead-free brass components at MMA.

    A comparison of two different concepts is presented in the results section. Concept one represents the current manufacturing system, and concept two, the future compacting technology. Since many of the processing steps are the same for both systems, a comparison was made between the productions of the pellet through the two different concepts. The results show that pellets made according to today's manufacturing system cost 12.75 SEK / detail, and pellets manufactured according to concept two costs 9.61 SEK / detail.

    As concept two is dependent on chips from today's manufacturing system, MMA cannot completely switch to compacting chips to new pellets. More work must be done to find a balanced model between the two different manufacturing systems for the best possible results.The results from the Monte Carlo-simulations shows that the manufacturing cost with the chosen parameters and variables is 12.96 SEK/detail.

  • 6.
    Adediran, Oluseun A.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Analytical and Experimental Vibration Analysis of Glass Fibre Reinforced Polymer Composite Beam2007Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    The aim of this work is to investigate analytical and experimental vibration of composite beam. The composite beam is used as composite footbridge model prototype which is assumed. For the dynamic test, hammer excitation is used to excite the beam at fixed locations. The modal parameters are extracted from the time response using a time domain analysis, i.e. the stochastic subspace identification technique. Finite element models for different boundary conditions are constructed using the commercial finite element software package ANSYS for natural frequencies of the beam to support and verify the dynamic measurements. The result obtained from analytical solution, dynamic tests and the FEM are presented and analysed.

  • 7.
    Adnan, Md Asif
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Shehata, Ahmed
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Stress Analysis Validation for Gear Design2018Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Gear stress analysis and understanding the effect of misalignment and microgeometry is important for gear designers and for those who work in gear maintenance. The misalignment can lead to the higher stress acting in one side of the gear tooth and the micro-geometry modification can improve the stress distribution in the gear teeth. In this research, a helical gear pair was modeled using three different software and tools; LDP, KISSsoft and Abaqus. Three different cases were modeled to study the effect of misalignment and microgeometry. Finally, the results from different tools were presented and discussed. It was observed that the tooth contact analysis software resulted in significantly higher stresses than the FE software. The results have been discussed to understand the differences in the cases obtained from the used tools. The results showed how bad is the effect of the misalignment on the gear mesh and the stress distribution and how the microgeometry modifications are used to compensate that effect.

  • 8.
    Adolfsen, Linus
    Blekinge Institute of Technology, School of Engineering.
    Parameterstyrd tillverkning av rör för marina fartyg2012Student thesis
    Abstract [sv]

    Innehållet i denna rapport är ett resultat av ett moment i utbildningen till Utvecklingsingenjör i Maskinteknik. Arbetet har skett genom ett samarbete mellan Linus Adolfsen, Kockums AB och Blekinge Tekniska Högskola. Rapporten behandlar i stort två moment, ett praktiskt och ett teoretiskt. Den första delen, den praktiska, gick ut på att finna en metod för att överbrygga steget från modell till verklighet på ett effektivt sätt. Detta resulterade i en egenutvecklad programvara som kan läsa in utdatafilen från Tribon (CAD programvara) och översätta detta till en programfil för Herber CNC 90 bockningsmaskin. Den andra delen är teoretisk och är en analys av verksamheten utifrån perspektivet att medge förtillverkning. Resultatet blev en analys av den berörda verksamheten med förslag på hur man ska åtgärda de problem och hinder som finns idag. Det gav även stort upphov till förslag på vidare studier.

  • 9.
    Adolfsson, Erika
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Automatiseringskonstruktion till mätfixtur2019Independent thesis Basic level (university diploma), 12 credits / 18 HE creditsStudent thesis
  • 10. Adolfsson, Vilhelm
    et al.
    Goldberg, Max
    Jawerth, Björna
    Lennerstad, Håkan
    Localized Galerkin Estimates for Boundary Integral Equations on Lipschitz Domanis1992In: SIAM Journal on Mathematical Analysis, Vol. 5, no 23, p. 751-764Article in journal (Refereed)
    Abstract [en]

    The Galerkin method is studied for solving the boundary integral equations associated with the Laplace operator on nonsmooth domains. Convergence is established with a condition on the meshsize, which involves the local curvature on certain approximating domains. Error estimates are also proved, and the results are generalized to systems of equations.

  • 11.
    Agenyi, Benjamin
    Blekinge Institute of Technology, Faculty of Engineering, Department of Industrial Economics.
    Mobile Banking and Entrepreneurship in Developing Countries:A case study of Nigeria2013Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    The purpose of this study was to identify ways by which entrepreneurial mobile banking growth could be accelerated in developing countries. An exploratory research method was adopted to identify the facilitators and obstacles to entrepreneurial mobile banking. The finding reveals some facilitators which include government policies and efforts of donor agencies, stiffer competition among banks, need for efficiency and lower cost, telecoms focus on customers retention. While some obstacles include conservative and vague regulation, security issues, underdeveloped infrastructures, lack of interoperability and lack of basic need for financial services. The main contribution of this study is the concise identification of the facilitators and obstacles to entrepreneurial mobile banking especially in developing countries. Suggestion for further study was made. The findings could be useful to policy-makers, donor agencies and other development partners in designing and directing their policies intervention

  • 12.
    Aghdasi, AmirHossein
    Blekinge Institute of Technology, School of Engineering.
    Application of transmissibility measurement in estimation of modal parameters for a structure2013Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    Identification of modal parameters from output-only data is studied in this work. The proposed methodology uses transmissibility functions obtained under different loading conditions to identify resonances and mode shapes. The technique is demonstrated with numerical simulations on a 2-DOF system and a cantilever beam. To underpin the simulations, a real test was done on a beam to show the efficiency of the method. A practical application of the method can be to identify structures subjected to moving loads. This is demonstrated by using FEM-model of a cantilever beam with a moving load.

  • 13.
    Ahlberg, Mårten
    et al.
    Blekinge Institute of Technology, School of Technoculture, Humanities and Planning.
    Liedstrand, Peter
    Blekinge Institute of Technology, School of Technoculture, Humanities and Planning.
    24-timmarsmyndighetens användbarhet2004Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [en]

    Kommunikationen med myndigheter och förvaltningar via Internet har ökat under de senaste åren. Därför har vi valt att fokusera vårt kandidatarbete på detta områ-de, samt på behovet av användbara webbtjänster för medborgarna. I detta kandi-datarbete studerar vi en växande grupp användare, denna grupp är äldre medbor-gare. Under studien har vi analyserat 24-timmarsmyndighetens användbarhet ge-nom användartester. Kombinationen av samtal och möten med individer, iaktta-gelser av interaktioner och litteraturstudier ger oss möjligheten att utforska använ-darnas behov. Behovet hos användarna är det som är centralt i hur de uppfattar och interagerar med 24-timmarsmyndigheten. Webbplatserna vi har använt oss av vid våra användartester har anknytning till 24-timmarsmyndigheten. Genom att analytiskt studera informationen har vi kommit fram till fem viktiga designförslag och riktlinjer, som vi anser behövs när e-tjänster inom 24-timmarsmyndigheten utvecklas.

  • 14.
    Ahlberg, Tomas
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Anti-Legionella system för tappvarmvatten system2007Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    This thesis contains the product development work towards a, for Alfa Laval Lund AB, alternative product to eradicate Legionella bacteria from domestic hot water systems. The existing product at Alfa Laval Lund AB, the AquaProtect, is having problems to reach costumers with small and medium size systems. The product developed in this thesis should be in a much more attractive price range for small and medium size systems. It should also work in any domestic heating system with circulation. Making it possible for, for example, the vulnerable people at elderly care housings to have Legionella bacteria free water.

  • 15. Ahlin, Kjell
    Comparison of Test Specifications and Measured Field Data2006In: Sound and Vibration, ISSN 0022-460X , Vol. 40, no 9, p. 22-25Article in journal (Refereed)
    Abstract [en]

    It is not always obvious how to compare a given test specification with measured field data. This article presents a systematic method based on the shock response spectrum and the fatigue damage spectrum. A random-on-random test specification for tracked vehicles, AECTP 400, is used as an example.

  • 16. Ahlin, Kjell
    et al.
    Granlund, Johan
    Lindström, Fredric
    Comparing Road Profiles with Vehicle Perceived Roughness2004In: International Journal of Vehicle Design, ISSN 0143-3369, E-ISSN 1741-5314, Vol. 36, no 2-3, p. 270-286Article in journal (Refereed)
    Abstract [en]

    Accurate road profiles are useful in vehicle design, such as for simulation of durability and ride quality. Laser/inertial profilometers typically record I mm wide profiles. The question is how well such a profile matches perceived vehicle wheel roughness. The objective here was to create a more representative wheel track longitudinal profile. Simulated and measured wheel vibration was compared on a 6km long road. Simulations were made for several definitions of the profile. Results for single laser sensor profiles showed reasonable likeness to truck perceived roughness. By far the best likeness (14.5% better) was achieved when the profile was based on triangular 25%-50%-25% weighted data from three sensors in the wheel track. Clearly, vehicle engineers can benefit from using multiple laser profile sensors, instead of a single sensor. This will improve test accuracy, thus reducing vehicle design project lead times and costs.

  • 17. Ahlin, Kjell
    et al.
    Magnevall, Martin
    Josefsson, Andreas
    Simulation of forced response in linear and nonlinear mechanical systems using digital filters2006Conference paper (Refereed)
    Abstract [en]

    There exist many methods to calculate forced response in mechanical systems. Some methods are slow and the errors introduced are unknown. The paper presents a method that uses digital filters and modal superposition. It is shown how aliasing can be avoided as well as phase errors. The parameters describing the mechanical system are residues and poles, taken from FEA models, from lumped MCK systems, from analytic solutions or from experimental modal analysis. Modal damping may be used. The error in the calculation is derived and is shown to be only a function of the sampling frequency used. When the method is applied to linear mechanical systems in MATLAB it is very fast. The method is extended to incorporate nonlinear components. The nonlinear components could be simple, like hardening or stiffening springs, but may also contain memory, like dampers with hysteresis. The simulations are used to generate test data for development and evaluation of methods for identification of non-linear systems.

  • 18.
    Ahlqvist, Christian
    et al.
    Blekinge Institute of Technology, School of Engineering.
    Hedlund, Tobias
    Blekinge Institute of Technology, School of Engineering.
    Hållfasthetsanalys och optimering av pressplatta i balpressar2013Student thesis
    Abstract [sv]

    Nättraby Verktygs AB i Ronneby konstruerar och producerar balpressar vars funktion är att pressa samman kartong, plast eller liknande material till kompakta balar. Dessa balar medför underlättad hantering av material som kan återvinnas för företag. Balpressarna används främst inom verksamhetsområden med stor åtgång av återvinningsbart material, exempelvis livsmedelsaffärer. Problemställningen vid detta examensarbete är att i en äldre version av en balpress har sprickbildning på pressplattan upptäckts efter en viss tids användning. Huvuduppgiften för detta examensarbete har därför varit att utföra hållfasthetsanalyser på pressplattorna för tre olika balpressar i deras sortiment. Denna rapport beskriver momenten samt arbetsgången för att genomföra dessa analyser och beskriver utförligt metoderna som använts. Hållfasthetsanalyserna är uppdelade i två delar, en statisk FEM-analys och en utmattningsanalys av konstruktionen. I den första delen av rapporten genomförs en FEM-analys på den gamla varianten av pressplattan för att se om analysen påvisar samma kritiska områden som företaget upptäckt. Resultatet visade att spänningen var högre i dessa områden än i övriga konstruktionen men under sträckgränsen för materialet. Därför beskriver nästa del av rapporten utförandet av en utmattningsanalys av pressplattan. Denna analys består av en svetsanalys för de svetsförband som finns i de kritiska områdena. Som metod vid svetsanalysen har “hot spot-metoden” använts vilken ger en uppskattning av hur många lastcykler dessa svetsförband kan belastas innan sprickbildning sker. Därefter har samma analyser genomförts på den nuvarande pressplattan och en pressplatta för en kommande modell. I sista delen av rapporten tas ett koncept av en möjlig framtida pressplatta fram där fokus ligger på minskad vikt, minskat antalet detaljer samt ökad hållfasthet. Det framtagna konceptet analyseras på samma sätt som de tidigare tre pressplattorna för att verifiera om detta koncept har ökad hållfasthet och livslängd.

  • 19.
    Ahlström, Catharina
    et al.
    Blekinge Institute of Technology, Department of Human Work Science and Media Technology.
    Fridensköld, Kristina
    Blekinge Institute of Technology, Department of Human Work Science and Media Technology.
    How to support and enhance communication: in a student software development project2002Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [en]

    This report, in which we have put an emphasis on the word communication, is based on a student software development project conducted during spring 2002. We describe how the use of design tools plays a key role in supporting communication in group activities and to what extent communication can be supported and enhanced by tools such as mock-ups and metaphors in a group project. We also describe a design progress from initial sketches to a final mock-up of a GUI for a postcard demo application.

  • 20.
    Ahmed, Zaki
    Blekinge Institute of Technology, School of Engineering.
    Modeling and Simulation of Urea Dosing System2013Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    To protect our health and environment from pollution, among others regulatory agencies in the European Union (EU) and legislation from the U.S. Environmental Protection Agency (EPA) has required that pollutants produced by diesel engines - such as nitrogen oxides (NOx), hydrocarbons (HC) and particulate matter (PM) - be reduced. The key emission reduction and control technologies available for NOx control on Diesel engines are combination of Exhaust Gas Recirculation (EGR) and Selective Catalytic Reduction (SCR). SCR addresses emission reduction through the use of Diesel Exhuast Fluid (DEF), which has a trade-name AdBlue. Which is 32.5% high purity urea and 67.5% deionized water, Adblue in the hot exhaust gas decomposes into ammonia (NH3) which then reacts with surface of the catalyst to produce harmless nitrogen(N2) and water (H20). Highest NOx conversion ratios while avoiding ammonia slip is achieved by Efficient SCR and accurate Urea Dosing System it’s therefore critical we model and simulate the UDS in order to analyze and gain holistic understanding of the UDS dynamic behavior. The process of Modeling and Simulating of Urea Dosing System is a result of a compromise between two opposing trends. Firstly, one needs to use as much mathematical models as it takes to correctly describe the fundamental principles of fluid dynamics such as, (1) mass is conserved (2), Newton’s second law and (3) energy is conserved, secondly the model needs to be as simple as possible, in order to express a simple and useful picture of real systems. Numerical model for the simulation of Urea Dosing System is implemented in GT Suite® environment, it is complete UDS Model (Hydraulic circuit and Dosing Unit) and it stands out for its ease of use and simulation fastness, The UDS model has been developed and validated using as reference Hilite Airless Dosing System at the ATC Lab, results provided by the model allow to analyze the UDS pump operation, as well the complete system, showing the trend of some important parameters which are difficult to measure such as viscosity, density, Reynolds number and giving plenty of useful information to understand the influence of the main design parameters of the pump, such as volumetric efficiency, speed and flow relations.

  • 21. Akiyama, Masahiko
    et al.
    Kamakura, Tomoo
    Hedberg, Claes
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Parametric sound fields by phase-cancellation excitation of primary waves.2008Conference paper (Refereed)
    Abstract [en]

    By radiating bifrequency primary waves from two ultrasonic emitters with changing the phases of the primary waves, we can obtain the sound fields that are different from the usual in‐phase excitation. Especially, for the excitation of out‐phase by 180 degrees the difference frequency wave has the directivity of almost uniformity near the acoustic axis. Additionally, the sound pressure levels of the harmonic components of the difference frequency and the primary waves as well are suppressed by 10 dB and more

  • 22.
    Akram, Muhammad Shoaib
    et al.
    Blekinge Institute of Technology, School of Management.
    Asaduzzaman, Mohammad
    Blekinge Institute of Technology, School of Management.
    Sareen, Ritu Amar
    Blekinge Institute of Technology, School of Management.
    ‘‘Reduction in working hours’’ … a motivational tool & win-win situation for Employer, Employee & Economy2011Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    The Governments and workers have put in a great effort in regularizing the working hours and working week over the course of last one and a half century. The average work week in the world stands at 40 hours. With unemployment among all the work force in Sweden almost hitting 11 percent and in youth aged 15-24 hitting almost 27 percent. It’s definitely alarming and requires measures to reduce. Different political forces in Sweden including Green Party and left party have joined forces in reducing the working week to 30 hours. The reduction in the working hours certainly presents a solution to different issues like work life balance, quality of life and work satisfaction but is it a solution to reduce unemployment at the same time source of motivation? That is the fundamental question we have tried to answer in the pages to follow. The reduction in working hours, during the economic downturn of 2008, supported financially by Government of Germany actually helped save at least half a million jobs. Volvo Power Train saved a number of jobs in Sweden by reducing the working hours of all the employees, so did Scania, and Saab in Sweden. Toyota reduced the working hours of its employees in 1990s to increase motivation, job satisfaction and quality of life. Our research has shown that if working hours are reduced then jobs can not only be saved, but can be created as well. In the following pages you will come across information obtained through number of information sources and printed material which directly aims at looking into how reduction in working hours can reduce unemployment. Our research presents different scenarios where reduction in the hours can generate employments. The debate however is open for future researchers to test these scenarios and see if they are viable proposals and can help reduce the employment.

  • 23.
    Al Choueyri, Yousef
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Fayazi, Mojtaba
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Digital models of manufacturing: with emphasis on titanium welding for early product development2019Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This thesis work is part of the BTH research lab, focusing on developing the early product development, by analyzing how to integrate the manufacturing process with the early design process. A known problem in the manufacturing industry is the knowledge gap between the designers and the manufacturing process. Where in the early stages of the product development a knowledge regarding the manufacture process is needed. This is in many cases ignored by the designers because it is commonly thought that the responsibility of selecting the manufacturing processes for a product falls upon the manufacturers, despite the fact that the manufacturing processes in reality is highly dependent upon the design choses such as materials, size, shape, finishing and tolerances of the product. To mitigate this problem a variations of product ‘team’ approaches have been used where the idea is to involve a multitude of people with the necessary experience to produce a ‘production friendly product’. Those approaches have a few drawbacks mainly the problem of finding people with the relevant experiences or that the expertise only covers the manufacturing processes already used in the organization, losing the opportunity to benefit from any alternative manufacturing process.

    This thesis focuses on how the welding manufacturing technic, analysis can be integrated into the design process with the help of a digital model?

    To improve the communications between the manufacturers and designers, two excel files were developed. The first excel file aimed at the manufacturers where they can present the specific machines used in the workshop. Focusing on specific machine and workshops instead of on the general welding method will give the designers a better understanding of the feasibility of producing their design in a specific workshop instead of focusing on a specific manufacturing method.

    The second excel file is aimed at calculating and comparing the weld methods where the cost and requirements are derived for general welding methods and compared with the machine specifications gathered from the manufacturers using the first excel file. To assess the excel files, a parametrized CAD model of the rear engine turbine structure was developed, and three different cases were used to evaluate the developed excel files.

    The values used are presented in Appendix A: Table 11–15, and were gathered from public sources. Values were also approximated using regression analysis.

  • 24.
    ALAMSETTY, SREETEJA
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    VEMURI, SAITEJA
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Springback Analysis of Aluminium Alloy 2024 in Flex-forming Process2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
  • 25.
    Al-Attar, Aenas
    et al.
    Blekinge Institute of Technology, School of Engineering.
    Balakrishnan, Siddharth
    Blekinge Institute of Technology, School of Engineering.
    Ventilation systems in Volvo Cars Body Components2004Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    In this Master thesis work two types of ventilation system, mixed system and displacement system at the factory premises of Volvo Cars Body Components (VCBC) are investigated. A computer simulation technique was implemented to study the behavior of air movement and temperature distribution inside the factory for the two systems. The commercial CFD program Flovent is used for simulation purpose. Model verification was carried out with the measurements made. Results showed quite good agreement between these two values. The current model has then been used to predict the temperature distributions and air flow movement for different climate scenarios. Energy calculations were also made in order to find out the energy used by two systems annually. The results from the simulations showed that the displacement system gave better performance in every case in thermal comfort aspect, whereas in the energy aspect it was found that the displacement system used more energy annually compared to mixed system.

  • 26.
    Al-Delemi, Rafel
    Blekinge Institute of Technology, School of Management.
    Kommunikation i projekt2010Student thesis
    Abstract [en]

    Study of communication in the project and identification of conflicts that stand in opposition to the project .. The study consists of various tests, an interview and a Web page. These methods are appropriate for the studied project situation and structure and can test different angles in communication. Focus areas are: - Quality - Structure Based on the above factors, I have with the help of the project owner and the project manager made ​​some assumptions that affect communication in the project and then I have used various methods to test them. The answers that I got out of these reviews gave a picture of the validity and how the following tests were complementary to the previous ones.

  • 27.
    Ali, Israr
    et al.
    Blekinge Institute of Technology, School of Computing.
    Shah, Syed Shahab Ali
    Blekinge Institute of Technology, School of Computing.
    Usability Requirements for GIS Application: Comparative Study of Google Maps on PC and Smartphone2011Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    Context: Smartphone is gaining popularity due to its feasible mobility, computing capacity and efficient energy. Emails, text messaging, navigation and visualizing geo-spatial data through browsers are common features of smartphone. Display of geo-spatial data is collected in computing format and made publically available. Therefore the need of usability evaluation becomes important due to its increasing demand. Identifying usability requirements are important as conventional functional requirements in software engineering. Non-functional usability requirements are objectives and testable using measurable metrics. Objectives: Usability evaluation plays an important role in the interaction design process as well as identifying user needs and requirements. Comparative usability requirements are identified for the evaluation of a geographical information system (Google Maps) on personal computer (Laptop) and smartphone (iPhone). Methods: ISO 9241-11 guide on usability is used as an input model for identifying and specifying usability level of Google Maps on both personal computer and smartphone for intended output. Authors set target value for usability requirements of tasks and questionnaire on each device, such as acceptability level of tasks completion, rate of efficiency and participant’s agreement of each measure through ISO 9241-11 respectively. The usability test is conducted using Co-discovery technique on six pairs of graduate students. Interviews are conducted for validation of test results and questionnaires are distributed to get feedback from participants. Results: The non-functional usability requirements were tested and used five metrics measured on user performance and satisfaction. Through usability test, the acceptability level of tasks completion and rate of efficiency was matched on personal computer but did not match on iPhone. Through questionnaire, both the devices did not match participant’s agreement of each measure but only effectiveness matched on personal computer. Usability test, interview and questionnaire feedback are included in the results. Conclusions: The authors provided suggestions based on test results and identified usability issues for the improvement of Google Maps on personal computer and iPhone.

  • 28.
    Ali, Mazin
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Shahin, Mahdi
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Framtagning av kalibreringsverktyg för referensmätningar: Vardaglig kontroll av kalibrering i industriell provbänk för pneumatiskt styrda tågbromsar2019Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Faiveley Transport Nordic AB is a company in Landskrona and which is an international supplier in the railway industry. The industry sight in landskrona is mostly focused on developing and manufacturing train brakes.Today, Faiveley has a number of test benches that needs regular checks and re-calibration every three months. In the current situation, it is the responsibility of the lab engineer to check that the calibration is correct on the test benches and adjust if needed. The purpose of this research is to design a reference object that will be used for checking the calibration on a test bench.During the research, the product development process was used with some tools from the design thinking process. The research begins with a lot of theoretical background about BFC (Brake Friction Concept), test benches and calibration to develop a deeper understanding for the different concepts.Since Faiveley had already identified the problem, the method was started directly by looking for other solutions that could inspire the solution to the problem. The search for inspiration was conducted through various methods such as patent searching, trend watching and techwatching. The authors proceeded by choosing the best possible ideas for them to create a prototype of the best concepts.After creating a prototype of the reference object, the objects function was verified by testing on a test bench to check if it meets the preset requirements. The authors were able to get the result for each one of them three measurement parameters such as force, distance and pressure. Results showed that most of the requirements was accomplished.Based on the results several conclusions could be drawn. Such as that the reference object that was the solution to the problem worked and partly fulfills the associated requirements. Through this research a method has been created for how to generate reference values for similar parameters in general contexts, which others interested can use in the future.

  • 29.
    Allesson, Sara
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Sheet Metal Forming Simulations with Elastic Dies: Emphasis on Computational Cost2019Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The car industry produces many of their car parts by using sheet metal forming, where one of the most time-consuming phases is the development and manufacturing of new forming tools. As of today, when a new tool is to be evaluated in terms of usability, a forming simulation is conducted to predict possible failures before manufacturing. The assumption is then that the tools are rigid, and the only deformable part is the sheet metal itself. This is however not the case, since the tools also deform during the forming process. A previous research, which is the basis of this thesis, included a model with only elastic tools and showed results of high accuracy in comparison to using a rigid setup. However, this simulation is not optimal to implement for a daily based usage, since it requires high computational power and has a long simulation time. 

    The aim and scope for this thesis is to evaluate how a sheet metal forming simulation with elastic tool consideration can be reduced in terms of computational cost, by using the software LS-DYNA. A small deviation of the forming result is acceptable and the aim is to run the simulation with a 50-75 % reduction of time on fewer cores than the approximate 14 hours and 800 CPUs that the simulation requires today.

    The first step was to alter the geometry of the tools and evaluate the impact on the deformations of the blank. The elastic solid parts that only has small deformations are deleted and replaced by rigid surfaces, making the model partly elastic. Later, different decomposition methods are studied to determine what kind that makes the simulation run faster. At last, a scaling analysis is conducted to determine the range of computational power that is to be used to run the simulations as efficient as possible, and what part of the simulation that is affecting the simulation time the most.

    The correlation of major strain deviation between a fully elastic model and a partly elastic model showed results of high accuracy, as well as comparison with production measurements of a formed blank. The computational time is reduced by over 90 % when using approximately 65 % of the initial computational power. If the simulations are run with even less number of cores, 10 % of the initial number of CPUs, the simulation time is reduced by over 70 %.

    The conclusion of this work is that it is possible to run a partly elastic sheet metal forming simulation much more efficient than using a fully elastic model, without reliability problems of the forming results. This by reducing the number of elements, evaluate the decomposition method and by conducting a scaling analysis to evaluate the efficiency of computational power.

  • 30.
    Almgren, Gustaf
    et al.
    Blekinge Institute of Technology, Department of Mechanical Engineering.
    Fogelqvist, Christopher
    Blekinge Institute of Technology, Department of Mechanical Engineering.
    Tjädermark, Anders
    Blekinge Institute of Technology, Department of Mechanical Engineering.
    Nytt koncept för linspridning2001Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [en]

    Summary The degree project, New concept for spreading line, consists of further development of a baitcasting reel. The baitcasting reel that was used as a starting-point was Ambassadeur Classic 5000c, which is a former product. Abu Garcia is the company that initiated the project. The purpose consisted of designing a baitcasting reel, which could provide free casts. At today's baitcasting reel is the line forced to pass through the mechanism that spreads the line. This causes the line to follow the motion from the spreader-mechanism, during the cast. Because of this fact there will be a great deal of friction, which results in a shorter cast. If the spreader-mechanism would not be in contact with the fishing-line during the cast, it would provide a longer cast. It is important that the spreader-mechanism spreads the line at once when the user starts winding it up. If not, the line will create disorder on the spool, which may prevent the next cast. Integrated Product Development created by Professor Fredy Olsson, consists of a concept, a primary and a prototype design phase and has been used through the project. Twelve different principal suggestions due to the problem were produced in the concept design phase. These suggestions were further developed and evaluated. Two suggestions were brought into the primary design phase, which resulted in one finally product solution. There were two different solutions in the beginning of the primary design phase. One solution was based on an endless screw, which makes it possible to spread the line on the spool. Abu Garcia has investigated this matter according to the complex geometry of the endless screw. There for has no further development of this proposal been performed. During the primary concept phase parts were developed, components selected and also detail constructions of new parts were performed. The finally concept were produced with facilities like I-DEAS, which is a 3D-tool. The prototype design phase consist of manufacturing the parts and to make them fit together with the other parts and components. A test of the final product should also have been done, however a lack of time has prevented this.

  • 31.
    Alsén, Maria
    et al.
    Blekinge Institute of Technology, Department of Software Engineering and Computer Science.
    Järgenstedt, Nils
    Blekinge Institute of Technology, Department of Software Engineering and Computer Science.
    Kommunikation med hjälp av mock-uper2003Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    In several cases, systems that have been developed have been very time consuming and cost a lot of money, but they still do not fulfil the users requirements and requests. To make new systems better, you have to find a way to communicate that allows the developers to understand the needs of the user. The aim for our thesis is to highlight the importance of communication in system development. To investigate this we have choosen to do a study of the real-estate system. The work methods that have been used include mock-ups and informal conversations with the user, who is employed by the Church of Sweden in Ronneby. The purpose of this thesis is, among other things, to provide the Church of Sweden in Ronneby with a report, which can be of help for further development of the system. The system was developed by a work group at Blekinge Institute of Technology. Our question of issue is: Would the Church of Sweden in Ronneby obtain a more useful system if the developers applied the guidelines and experience that exists within the area of HCI? Further more we have looked in to if the communication has improved with the use of mock-ups to increase the interaction? Human-computer interaction as a term was adopted in the mid-1980s as a means of describing this new field of study. The focus of interest described the new way of looking at the interaction between computers and people. In this field it is important to involve the user in the developing process from the beginning to the end. Together with the user, we have made some propositions based on previous documentation from the project. Mock-ups are a prototype of paper that shows the user what the system will look like. This method was applied together with the user, to find a more logical structure for the system. After gathering the result of the case study, we can honestly say that communication do increase because of mock-ups. Good communication is not something that you can learn from books; you have to adjust to the situation. It is important when you develop a system to work with a model that allows you to go back and change things in previous phases that are incorrect, and also to include the user in the whole process.

  • 32.
    Amani, Ebrahim
    Blekinge Institute of Technology, School of Engineering.
    Investigation in the Simulation of the Human’s Heart Structure from the Mathematical Perspective2012Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    The present work has been done after a question defined by the author about the approaches of the human’s heart simulation. In this way, the structure and function of the heart have been investigated to understand the anatomy and physiology of the heart. Then, a literature study about the heart simulation has been done to figure out which modeling approaches have been applied in this way and how they have been implemented to represent the heart function. We have realized that lamped parameter, two dimensional and three dimensional models have been applied for this purpose and the Immersed Boundary Method introduced by C.S.Peksin has been considered as a powerful numerical method for simulation of the nonlinear fluid-structure interactions which is the base of one of the advanced three dimensional modeling approaches of the heart function. Besides, some of the applicable tools for the simulation of heart function are addressed.

  • 33.
    Ameen, Noor
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Safawizadeh, Hassan
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Visualizing Material on Site for Machines and Humans: A Step toward an Autonomous Construction Site2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The construction industry has not seen the same growth in productivity as e.g. the manufacturing- and automobile industry. This is largely due to the ease of implementing automation and robotics in the latter mentioned industries. Now more than before when the urbanization rate is increasing, there is a strong need in increasing the efficiency of the construction industry. That is why the research questions of this thesis work involves finding a complementary solution that will help autonomous construction machines operate in a dynamic construction site. The aim is permeated by two visions. The first one being to have autonomous construction machines collaborating with humans in the most remote places in the world. The second vision is that multiple smaller construction machines is more beneficial. Meaning a few machine breakdowns would not halt the entire construction process.

    During the research work, using the design research methodology and the innovation process, data showed that a construction site is very dynamic and complex. Having a change in factors such as size of construction site, number of involved stakeholders, location of the construction site, and time phase heavily affects the complexity of the site. Throughout the three case studies there were different characteristics, but there was a pattern. All the mentioned factors played a huge role in what needs expressed by the interviewees. The more complex a site was, the more there was a need to organize the material, personnel and machine flow. Therefore, the final solution is to decentralize the information flow of the construction site. Meaning that all humans, machines and material on site is to communicate its information. The suggested solution is the usage of a tag using GPS and Wi-Fi to communicate location and the necessary information. Thus, when attaching the tag onto a material, the workers and the machine will know of its information.

    The analogy is that when the implementation of autonomous machines is up to pace, the sites need to be prepared with all the errors and issues that might come with it. Since the autonomous construction machines will be collaborating with humans, it means that the issues expressed today will reappear in the future. Also, since the implementation of autonomy and robotics has been slow for the construction industry, there is a clear need of a complementary solution to speed up the process. By decentralizing the construction site and implementing tags on each interesting point, the once complex and changing construction site, will turn into a fully digitized infrastructure.

  • 34.
    An, Hai
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Gu, Lujun
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Main Success Factors for Developing Car-sharing in China2015Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
  • 35.
    Anastasiadis, Kleanthis
    Blekinge Institute of Technology, School of Technoculture, Humanities and Planning.
    Co-ordinating artefacts and actions in order to run a taxi business2004Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [en]

    Work place studies in a taxi business in order to identify eventual problems and give design solutions.

  • 36.
    Andersson, Antonia
    et al.
    Blekinge Institute of Technology, School of Management.
    Trygg, Emeli
    Blekinge Institute of Technology, School of Management.
    Motivation som verktyg för att minimera negativ stress i projekt2013Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [en]

    Purpose: To identify methods for project managers to use motivation as a tool for reducing negative stress among members of project teams. Method: Qualitative interviews Results: We have defined three methods that we find could contribute to initiate an internalization chain. Internalization increases the intrinsic motivation both for the project manager and for the project participants. The first method is about creating a model specifying what information the project managers will need from the client when a project is due to be ordered. The second method also addresses the need for increased procurement competence, and concerns the education of clients. The third method is about clarifying boundaries between the project managers and the participant´s superior´s responsibility when it comes to issues concerning motivation or stress related the project team members. The internalization chain contributes to facilitate the participants´ own internalization process, which to a greater extent makes the participants intrinsically motivated which reduces the risk for negative stress.

  • 37.
    Andersson, Carolina
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Fritidsbåt för alla2015Independent thesis Basic level (degree of Bachelor), 180 HE creditsStudent thesis
    Abstract [sv]

    Ett fysiskt handikapp kan innebära stora begränsningar i livet. För de som sitter i rullstol kan det vara mycket svårt eller till och med omöjligt att förflytta sig dit de vill och få uppleva aktiviteter som personer utan handikapp tar för givet. Det här kandidatarbetet har haft som syfte att ta fram en handikappanordning som ska göra det möjligt för rullstolsburna att kunna ta sig ombord och iland från fritidsbåtar. Det finns redan olika lösningar på marknaden som syftar till att möjliggöra en sådan förflyttning, men målet med det här arbetet har varit att ta fram en lösning som är annorlunda jämfört med de befintliga lösningarna framförallt vad gäller möjligheten till att använda den från båten istället för från kaj, samt att den ska kunna installeras till en rimlig kostnad och dess design ska passa flertalet fritidsbåtar utan alltför stora krav på båtens utformning. 

    Det viktigaste kravet på produkten är att den ska vara säker att använda. Det får inte föreligga någon risk för personskada. Andra krav som ställdes upp när problembeskrivningen arbetades fram är att anordningen ska vara enkel att använda. Installationen ska vara möjlig att göra i flertalet fritidsbåtar till en rimlig kostnad. Detta för att ett plötsligt behov av rullstolsanpassning inte nödvändigtvis ska behöva innebära inköp av en ny båt. Produkten ska vara hållbar (kunna vara monterad och användas under många år) och inte kräva service under den primära utnyttjandeperioden (under sommaren). Under utvecklingen togs hänsyn till miljöaspekter i val av tillverkningsmetoder och materialval. 

    Det slutliga produktförslaget, som arbetats fram efter att ha gjort flertalet analyser och utvärderingar av på marknaden befintliga lösningar, är en mast som monteras i durken på båten. Masten har ett stödben som placeras på bryggan/kaj, vilket ger stabilitet och därmed hög säkerhet för användaren. Detta då motorbåtar inte har en köl som kan fungera som motvikt för den sidobelastning som ombordstigningen innebär. 

  • 38.
    Andersson, Carry
    et al.
    Blekinge Institute of Technology, Department of Mechanical Engineering.
    Kisswani, Lennart
    Blekinge Institute of Technology, Department of Mechanical Engineering.
    Dynamic Characteristics of a Tool Holder Shank in Lathe2000Other (Other academic)
    Abstract [en]

    Dynamic characteristics of a Tool Holder Shank were determined by using the Finite Element Method and Experimental Modal Analysis. Good agreement between FE-model and the experimental model was obtained for the Tool Holder Shank itself. With the Tool Holder Shank in Lathe the agreement was less good. Reasons for this are discussed. Suggestions for further work on including actuators to reduce vibrations are given.

  • 39.
    Andersson, Elisabeth
    et al.
    Blekinge Institute of Technology, Department of Human Work Science and Media Technology.
    Palo, Catarina
    Blekinge Institute of Technology, Department of Human Work Science and Media Technology.
    Systemutveckling med fokus på kreativa processer och lärande2003Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [sv]

    Med denna uppsats vill vi (författarna) samla ihop 5 år av tankar, teorier och erfarenheter kring systemutveckling och lärande. Uppsatsen presenterar 8 projekt som är genomförda i Blekinge mellan 1995-1999. Med utgångspunkt i projekten behandlas en utvecklingsprocess för IT-system som är baserad på kreativitet och lärande miljöer. Särskilt lyfter uupsatsen fram behovet av att förändra processen för att möta slutanvändare av program och tjänster.

  • 40.
    Andersson, Eskil
    et al.
    Blekinge Institute of Technology, Department of Human Work Science and Media Technology.
    Akrawi, Sirvan
    Blekinge Institute of Technology, Department of Human Work Science and Media Technology.
    CU2: Design av ett PDA-baserat diskussionverktyg med ljud/bildkommunikation2001Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [sv]

    I detta arbete framlägger vi ett designförslag på hur ett diskussionsverktyg som stödjer ljud- och bildkommunikation kan se ut. Ett förslag som förbättrar och förenklar den distanskommunikation som idag sker med hjälp av mobiltelefoner, videokonferenssystem samt webbkameror anslutna till persondatorer. Den design vi föreslår möjliggör för mobila användare att visuellt föra flerpartssamtal med hjälp av PDA:er. Vårt designförslag har fått arbetsnamnet CU2 (see you too) och är tänkt att fungera i tredje och/eller fjärde generationens mobila nät. Vi har valt att genomföra vårt magisterarbete på företaget A Brand New World i Kista, Stockholm. Företaget utvecklar och säljer system inom mobilt Internet.

  • 41.
    Andersson, Helena
    et al.
    Blekinge Institute of Technology, Department of Human Work Science and Media Technology.
    Nilsson, Anna
    Blekinge Institute of Technology, Department of Human Work Science and Media Technology.
    Nilsson, Johan
    Blekinge Institute of Technology, Department of Human Work Science and Media Technology.
    Trouble Ticket "Kommunikationen gav oss vind i seglen"2002Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Rapporten huvudsyfte är att beskriva hur vi genom användning av språk och kommunikation har kunnat tillgodose våra användares krav på ett ärendehanteringssystem, samt på vilket sätt vi har använt artefakter för att kommunicera. Vi kommer att beskriva olika delar av projektet där språk och kommunikation har haft centrala "roller" och visat sig ha olika betydelse beroende på de personer som medverkar och i vilken miljö situationen har utspelat sig. Rapporten behandlar även hur resultatet av ovanstående har lett oss in i en utvecklingsprocess där vi försökt tillgodose användarens krav på bästa sätt. Vi kommer också att beskriva de kända och tidigare okända metoder som vi använt oss av för att uppnå vår målsättning, att överlämna en första prototyp av ett ärendehanteringssystem.

  • 42.
    Andersson, Jennie
    Blekinge Institute of Technology, School of Management.
    Vilka faktorer i service branschens arbetsmiljö har betydelse för social trötthet?2008Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Titel; Vilka faktorer i service branschens arbetsmiljö har betydelse för social trötthet? Hur ser sambanden ut mellan utbrändhet och social trötthet? Författare; Jennie Andersson Nyckelord; Utbrändhet, Social trötthet, arbetsmiljö Syftet med undersökningen har varit att få fram vilka faktorer i service branschens arbetsmiljö som har betydelse för social trötthet samt undersöka eventuella samband mellan utbrändhet och social trötthet. Undersökningen är riktat mot vårdanställda och reseledare då tidigare undersökning påvisat samband mellan social trötthet och reseledare. Undersökningen är av en kvantitativ metod i form av en enkät. Denna enkät skickades ut till sammanlagt 110 personer i service branschen (vårdanställda och reseledare). Materialet har sedan bearbetats för att göra jämförelser mellan utbrändhet och social trötthet samt se vilka faktorer som har betydelse för dessa. I resultaten har det påvisats att vårdanställda upplever en högre grad av social trötthet än vad reseledare gör om de inte trivs på arbetet. När det gäller utbrändhet så visar resultaten på att utbrändhets tendenser påvisas hos vårdanställda om de inte är tillfredsställda med sitt arbete, denna korrelation påvisas inte hos reseledare. Frågor gällande vilka faktorer i ens arbetsmiljö som har betydelse för social trötthet och utbrändhet visar på att psykosocial arbetsmiljö och arbetstillfredsställelse har betydelse för social trötthet och utbrändhet. Högst tendenser för utbrändhet och social trötthet påvisade vårdanställda. Till fortsatta forskning inom detta område skulle jag kunna undersöka om fenomenet social trötthet existerar inom andra yrkeskategorier än de undersökta. Frågeställningar 1. Vilka faktorer i service branschens arbetsmiljö har betydelse för social trötthet? 2. Hur ser sambanden ut mellan utbrändhet och social trötthet?

  • 43.
    Andersson, Johan
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Andersson, Peter
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Konceptlösning för upptagning av kabel ur karusell2019Independent thesis Basic level (degree of Bachelor), 12 credits / 18 HE creditsStudent thesis
    Abstract [en]

    In collaboration with Semcon Karlskrona, a conceptual solution regarding withdrawal of cable from a carousel was developed. The diameter of the cable were 300 mm and its weight were 160 kg/m. By brainstorming, a number of draft was conceived whereof one were chosen by Pugh's concept screening.

    The solution was an arm supported by a framework construction. The end of the arm is bent to match the minimum bending radius of the cable. The arm is capable to translate sideways by a puck located in runners. These runners are coated by the plastic material Robalon to achieve a good sliding surface. The translation will be made possible by using a wire and a a winch. At the back edge of the arm a hinge were attached, allowing rotation around the supporting pillar. At the centre och the carousel, an axis is located which will be used to fasten the centre pillar against.

    All of the bars that are used in the construction are hotrolled rectangular hollow sections as these are seen to be advatageuos from a manufacturing perspective. The dimensions of the construction was determined regarding buckling, compression, tension and shear. As were the welded and screwed joints.

  • 44.
    Andersson, Jörgen
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Interaktiv arbetsbeskrivning2004Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Under framtagandet av nya produkter måste ett antal prototyper tillverkas för att verifiera konstruktionen. För en metodingenjör som tar fram reparationsmetoder innebär prototyptillverkning att tankar som växt fram under utvecklingsfasen kan provas för första gången på en fysisk produkt. Detta sker relativt sent i produktutvecklingen och eventuella ändringar som kan uppstå på grund av att servicevänlighet inte uppnås blir mycket kostsamma. Om däremot prototypen där metoderna verifieras för första gången är digital och detta sker tidigt blir kostnaderna för eventuella ändringar avsevärt mycket mindre. Modellen som ligger till grund för metodstudierna kan sedan används för att skapa ett utkast till service litteratur, detta medför att även den delen av slutprodukten kommer att vara i fas med övriga utvecklings avdelningar. Under detta projekt har en digital prototyp av en Scania motor använts för genomförandet av metodstudier. Dessa studier har resulterat i animationer och illustrationer som sedan använts i ett exempel av en dynamisk interaktiv arbetsbeskrivning, även den skapad under projektet. Användandet av digitala prototyper har resulterat i ett förtydligande av hur användbart 3D modeller är i produktutvecklingsprocessen. Under arbetets gång har delar av Fredy Ohlssons principer för produktutveckling använts. Under the development of new products a number of prototypes must be built to confirm the products construction and strength. For an engineer whose job is to create instructions for repairing methods, building a prototype means that new ideas can be tested for the first time. This often happens rather late in the development process which means that changes made because of lack of serviceability becomes expensive. If the prototype is digital and confirmation of serviceability is done early this cost can be reduced. This digital prototype can be used as a basis for creating images to increase the understanding of an instruction. During this project a digital prototype of a Scania engine has been made and used to create repairing methods. This studies results in animations and illustrations which has been used in an example of a dynamic interactive work instruction, created under this project. Applying digital prototypes in this project has resulted in a clarification of the benefits when using 3d models in the development process. During the work with the project parts of “The principles of product development” by Fredy Ohlsson has been implemented.

  • 45.
    Andersson, Karl
    et al.
    Blekinge Institute of Technology, Department of Human Work Science and Media Technology.
    Dackemyr, Elisabeth
    Blekinge Institute of Technology, Department of Human Work Science and Media Technology.
    Teknikens Under: En problemrapport över arbetet på diariet, Regionens Hus i Mariestad2002Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Att en dator hänger sig, inte gör som man vill eller bara är obegriplig är inget nytt fenomen. Dock är detta en del av vardagen på diariet i Regionens Hus i Mariestad, där de tre registratorernas arbetsprocesser innehåller ett antal problem som bland annat är datorrelaterade. Rapporten beskriver arbetet på diariet, de problem som finns, vem som äger problemen, och innehåller också en diskussion runt de befintliga problemen. Rapporten tar upp allt från postöppning till sökfel i programmet Diabas och mycket annat som ingår i arbetet som registrator. De problem som finns i arbetet på diariet har hopat sig över registratorerna som känner att det inte finns någon självklar part som de kan vända sig till för att få hjälp. Känslan av maktlöshet är alltid närvarande i arbetet när registratorernas datoriserade hjälpmedel inte gör som de vill. Rapporten är ett steg i att kartlägga problemen och vem som äger dem, och avsedd att bli en hjälp för registratorerna.

  • 46.
    Andersson, Madelene
    Blekinge Institute of Technology, Department of Human Work Science and Media Technology.
    Systemutveckling i praktiken: konsten att tillmötesgå den okända användarens krav2002Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    ABSTRACT System development has become more and more concentrated on development for the Web and this has resulted in larger target groups. It will most surely continue to be so considering that the Web will be the infrastructure of business and services in the future. A big target group involves that the owner of a system can earn a lot of money from the paying users, but that assumes that the system can meet user needs. If a system on the Web does not satisfy the user?s demands then they will use the competitor?s system instead because it is only a mouse-click away. That is why the business, already during the development process, has to take the role of the users seriously. Even if all users cannot take part in the process at least some users can and it would be a shame not to take advantages of this kind of expert knowledge. This report describes how a system development project can be practised and how a developer can do to satisfy each user?s requirements even though he or she are not specified, and also why a useful system is classified as an investment in the future.

  • 47.
    Andersson, Mattias
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Jonsson, Henrik
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Löfqvist, Stefan
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Maigne, Remi
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Bravo, Unai
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Weldless Flange Connections2004Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [en]

    This development project is a bachelor’s degree thesis work that will conclude the education program ”Development Technology” at Blekinge Institute of Technology. The development project has been done in cooperation with Faurecia Exhaust Systems AB in Torsås that constructs and manufactures manifolds, catalytic converters, mufflers and whole exhaust systems. The task with this project was to find a new solution concept for the connection of pipes into flanges in manifolds. The concept that Faurecia uses today for their manifolds is based on welding the pipes into place in the flange. The product development model that is used in this project is written by Fredy Olsson. For this project have the parts ”Principal construction” and ”Primary construction” been used. During the principal construction has a product definition been made and the criterions that should be satisfied by the following solution concept was determined. Several solutions were designed and evaluated by the project members and in cooperation with the supervisors at Faurecia. The solutions that were subject for further development were prepared during the primary construction with for example CAD. Three solution concepts were the result from this thesis work. All of the solution concepts contain end shaped pipes that provides the sealing area against the engine. The main difference between them is that the flange is designed in different ways.

  • 48.
    Andersson, Mattias
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Sildén, Daniel
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Vidareutveckling av parkeringsbroms2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis report is the final work and summary for Bachelor of Science degree in Product Development. The program has emphasis in Mechanical Engineering, at Blekinge Institute of Technology, 2016.

    This assignment consists of a continued research and development study of a conceptual brake caliper operated by an electric servo-assisted motor.

    In the current situation there is a concept both as a CAD model and a 3D-printed physical plastic model of a parking brake. After a prolonged investigation seems to have brake for large physical dimensions, high weight, as well as for complex surface geometry. Another important part is that you do not in the current situation have found a suitable electric motor for the linear movement required for functionality to be maintained. Which led to the desire to explore the opportunities that exist to improve these points.

    The assignment has led to a series of improvements through further development based on the earlier concept proposal which found new solution proposals and component taking into account the comments they had regarding previous design and technical solutions. These design improvements have very little or no negative impact of previously established requirements and requests for the product, which has been seen as very positive.

  • 49.
    Andersson, Oscar
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Lu, Anqi
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Elektriskt drivsystem för tandemvält: En utvecklingsprocess2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    I dagens samhälle har det blivit mer och mer populärt med miljövänliga lösningar. Inom detta område har fordonsindustrin utmärkt sig de senaste åren genom utvecklandet av eldrivna bilar. Därför börjar även företagen som utvecklar tunga maskiner bli intresserade av att börja utveckla mer miljövänliga produkter.

     

    Syftet med arbetet som vi utfört i samarbete med Dynapac Compaction Equipment AB i Karlskrona har varit att utveckla ett koncept till en lösning av ett miljövänligt drivsystem för deras minsta tandemvält. Det är tänkt att motsvara den vardagliga prestationen av det dieseldrivna systemet, utan att bli för dyrt, samt undvika att använda specialbeställda produkter.

  • 50.
    Andersson, Pernilla
    Blekinge Institute of Technology, School of Management.
    Är människan formad med det karismatiska ledarskapet redan från tidig ålder.- En observerande studie över mindre barn.2007Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Abstract. Studiens syfte var att undersöka om människan är formad med det Karismatiska ledarskapet redan från tidig ålder. Då egenskaper är svåra att studera, som också litteraturen beskriver, så valdes mönster som är karateristiska för det karismatiska ledarskapet ut, som exempelvis; stark utstrålning, stor kommunikations förmåga, en ledare för gruppen. Dessa mönster valdes att studeras genom observation av en klass där barnen var i sju års ålder. Av datainsamlingen gjordes an analys och tolkning och av detta framkom ett resultat som i sig visade på att det fanns mönster och beteenden karakteristiska för karismatiskt ledarskap hos vissa av barnen. Barnen hade olika mycket av mönsterna men det visade sig ändock tydligt vilka som var av det karismatiska ledarskapet och som kamraterna lät sig ledas av. Studiens frågeställning anses då besvarad och visar på att människan är formad redan från tidig ålder med karismatiskt ledarskap

1234567 1 - 50 of 1183
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf