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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
61

Metodik för robotsimulering och programmering av bågsvetsrobotar / Methodology for robot simulation and programming of arc welding robots

Hänninen, Sofia, Karlsson, Gunilla January 2008 (has links)
Det finns flera fördelar med robotiserad bågsvetsning jämfört med manuell bågsvetsning. När det gäller produktivitet och repeterbarhet är robot överlägsen människa, vilket gör att produkterna håller jämnare kvalitet. I slutet av 80-talet började offline-programmering att tillämpas. Att programmera en robot offline innebär att utföra programmeringen med dator utan direkt tillgång till roboten. Genom simulering visualiseras ett robotprogram i en grafisk modell av den fysiska robotcellen utan att den fysiska roboten behöver tas ur produktion. För att systemet för offline-programmering (OLP) ska vara effektivt, måste dess modellers kinematik överensstämma med dess fysiska motsvarigheter. En virtuell modell av en cell skiljer sig dock alltid något från verkligheten. Därför krävs kalibrering När simuleringsprogrammet är färdigt och kalibreringen är utförd, ska programmet översättas till ett för roboten specifikt programspråk. Detta görs genom en så kallad translator. Denna rapport har skrivits på uppdrag av Delfoi. Delfoi har i flera år använt sig av DELMIA IGRIP för offline-programmering av bågsvetsningsrobotar. DELMIA har nu gett ut en ny generation program i den gemensamma plattformen V5. Plattformen innehåller bland annat DELMIA V5 Robotics och CATIA V5. Området för bågsvetsning har varit relativt outforskat. Därför vill företaget undersöka hur långt V5 Robotics har utvecklats inom detta område. Syftet är att undersöka om utvecklingen av V5 Robotics kommit tillräckligt långt för att kunna säljas till kund för offline-programmering av bågsvetsning. Arbetet påbörjades genom att kartlägga den arbetsmetodik som Delfoi använder sig av vid bågsvetsning i IGRIP. Detta har skett i programvaran UltraArc, som innehåller IGRIP’s applikation för bågsvetsning. Dessutom gjordes en kartläggning av användandet av AMP, Arc weld Macro Programming, vid offline-programmering av bågsvetsning. Nästa del var att ta fram en metodik för bågsvetsning i V5 Robotics. De båda programmen och dess metodik har sedan jämförts, för att ta reda på om V5 Robotics är tillräckligt utvecklat för att migrera från IGRIP till V5 Robotics. Demonstrationer av arbetssättet i V5 Robotics har genomförts på Delfoi samt hos en av Delfois kunder, BT Industries i Mjölby. Författarnas slutsats är att V5 Robotics är redo att användas för OLP av bågsvetsning. För de företag som använder sig av CATIA V5 finns det stora fördelar med att starta migrationen från IGRIP till V5 Robotics. Metodiken mellan de båda mjukvarorna har stora likheter, men vissa delar har utvecklats till det bättre i V5 Robotics. Dock kan den nya programvaran behöva testas i verkliga projekt för att säkerställa att hela programmeringsprocessen fungerar tillfredsställande innan bytet genomförs. / There are several advantages in robotic arc welding, compared to manual arc welding. When it comes to productivity and repeatability, robot is superior to man, which generates more even quality in products. In the end of the 1980’s, offline programming was put into practice. To program a robot offline means to perform the programming on a computer with no direct access to the robot. Through simulation, the robot program is visualized as a graphic model of the actual workcell, without having to take the actual robot out of production. For the offline programming system (OLP) to be efficient, the kinematics of the models need to correspond to its physical counterpart. A virtual model is always slightly different from the reality. That is why calibration is necessary. When the simulation program is complete and the calibration is done, the program needs to be translated to the language of the target robot. This is done through a post processor. This thesis was written as an assignment from the company Delfoi. Delfoi has been using DELMIA IGRIP for offline programming of robotic arc welding for several years. DELMIA now has released a new generation of programs in the common platform V5. The platform includes for example DELMIA V5 Robotics and CATIA V5. The area of arc welding has been relatively unexplored. That is why the company wants to investigate how far V5 Robotics has developed in this area. The purpose is to investigate if the development of V5 Robotics has come far enough for V5 Robotics to be taken to customers for OLP of arc welding. The work was begun by surveying the methodology used by Delfoi in arc welding in IGRIP. This has been done in the software UltraArc, which consists of the arc welding application from IGRIP. There was also a surveillance of the application of AMP, Arc weld Macro Programming, in offline programming of arc welding. The next step was to evolve a methodology for arc welding in V5 Robotics. The two softwares and their methodologies were then compared to find out whether or not V5 is enough developed for migration from IGRIP to V5 Robotics. Demonstrations of the method of working in V5 Robotics were held on Delfoi and on BT Industries in Mjölby, which is one of Deloi’s clients. The conclusion of the writers is that V5 Robotics is ready to be used in OLP of arc welding. For companies using CATIA V5, there are great advantages in migrating from IGRIP to V5 Robotics. The methodoldgies of the softwares show great similarities, but some parts have been developed to the better in V5 Robotics. Though, the new software needs to be tested in real projects to assure that the entire process of programming functions satisfying before the change is completed.
62

Identitetens transparenta gränser : Iscensättning av identitet, begär och kroppslighet inom sociala medier.

Lindberg, Martin January 2012 (has links)
The aim for this master thesis is to create an understanding of the intersubjective processes of how individuals are experimenting with their identities in social media and the consequences for the identity and embodiment. The thesis is completed with the help of discourse analysis and a starting point in four complementary theories. Central to the implementation of the analysis is the concept of diffraction. Therefore the thesis is, which is reflected in the choice of theoretical approaches and methods, critical to many aspects of classical philosophy of science and method. The empirical material is based on interviews. During the analysis the theory is applied to empirical data received from the interviews, but the empirical data will also be used as inspiration for examining my chosen theories. The analysis covers several topics. First I discuss how a web-identity is constructed and how this can be considered as a process of negotiation with other users on the same website. Furthermore I discuss how my informants negotiate about boundaries conserning sexuality and corporeality, but that the subjective boundaries shift in the encounter between different discursive claim to legitimate expression of body and sexuality. In the final section, before the final discussion, I discuss the body's impacts on communication on a website. During the final discussion several questions are being raised. Centrally, however, is how the essays selected theories help to demonstrate how the negotiation of boundaries in social media is complex, and that experimentation with the identity of a website partly dependent on society's other discourses on gender, body and desires. But it is also discussed how discourses of gender, body and desire is shifted inside the selected websites, and that these sites creates new opportunities for identification and self-knowledge.
63

Information gathering considering the influence of brand- awareness and attitude : A study focusing on young female consumers behavior in the cosmetic industry

Färemo, Emma, Fredriksson, Angelica January 2015 (has links)
Problem: Research shows that it is crucial to acknowledge the information search step to understand consumer decision-making. Moreover, consumers‟ buying behavior is affected by their brand awareness. A problem is however that there exist a gap in previous research on understanding the consumers‟ actual behavior and why they choose certain platforms for their information gathering. Purpose: The purpose of the thesis is to get an understanding of consumers‟ information gathering process about cosmetic products and in turn to what extent that can create brand- awareness and attitudes. The thesis aims at filling the gap of truly understanding consumers inter-action in media and their behavior. The target audience to be stud-ied is young women, age 18-26, in the cosmetic industry. The inten-tion is to take an exploratory research view and to understand how this group of customers behave and also to describe why that is the reason. Methodology: To meet the purpose of the thesis, a qualitative research design was chosen since it allows the participants to express their opinions, re-flections and feelings as well as truly understanding the target in the way it enables deeper discussions. Three focus groups were con-ducted with young female consumers, and one in-depth interview was held with the partner company The Body Shop. The data was color-coded and presented separately in the result section, so that every participant‟s opinion was visible, before combining the results with theoretical reasoning in the analysis section. Conclusion: This study shows that young female consumers spend most of their information search on Instagram and Youtube since it is quick, fun and give inspiration, but they also value recommendations from friends. On all platforms they highly value a feeling of personal rela-tionships. Regarding brand- awareness and attitudes, it was found that brands are for the most part very important for the young fe-male consumers and they learn about brands both in their infor-mation search online and offline when talking to friends or visiting stores.
64

Online going offline : Why online fashion retailers expand through an offline strategy

Bövik, Therese, Pålsson, Lisa January 2015 (has links)
During the previous years there has been a lot of focus on e-commerce in the fashion and clothing industry and that everything will be bought online in the future. However, several e-commerce companies have decided to expand into offline retail. This dissimilarity between theory and reality creates an interest for further research and a curiosity of how the future within retail will develop. The purpose of this research is to understand why Swedish online fashion retailers expand through an offline strategy. An Expansion Theme Model, which emerged from the theoretical framework, is used throughout the research to create a cohesive presentation of the material. In this research two case studies were conducted with e-commerce companies that are moving towards offline retail, one that is planning to open their own offline store and the other that is selling to external offline retailers. The findings present the reasons for expanding into offline retail according to the respondents in the two cases. Two reasons that were discussed in both cases were to enhance the brand image and use offline retailing as a marketing tool to reach a larger customer group and ultimately enhance the company’s profit. The findings present several problems within each case that can be solved by expanding into offline retail. The first problem is about suppliers that protect offline retailers. The second problem is about how to reach the minimum quantities that the suppliers require. The third problem is how to achieve a better negotiation power with the suppliers. The fourth problem discusses the challenge of displaying products online. The view of the future within retail is also presented, where all of the respondents agreed that the two selling channels will be more integrated in the future. Finally, the transition towards offline retail creates many new possibilities in the world of retail that is yet undiscovered and it is therefore exciting to follow this development.
65

Business opportunity creation through Social Networking Sites : A network perspective

Arnell, Matilda, Bilinskaya, Yuliya January 2012 (has links)
No description available.
66

Seeking Social Connectedness Online and Offline: Does Happiness Require Real Contact?

Holmberg, Lena January 2014 (has links)
Although online social connectedness is increasing, many assumptions about online social network use still remain. For example, that offline social connectedness is superior to online social connectedness. This cross-sectional study addresses these assumptions by studying online and offline social connectedness in relation to happiness, in a sample of 293 young adults from Sweden, between the ages 18-48. Results show that both online and offline social connectedness was associated to happiness. Moreover, three groups varying on happiness did not differ on various forms of social connectedness; however, very happy individuals reported having more genuine online friends than all other groups. The implications of the study and future directions are discussed.
67

Building a scalable virtual community on commodity hardware and open source software / by Andreas Alberts

Alberts, Andreas Jacobus January 2008 (has links)
The information era has brought upon us waves of change that brings affordable technology Within the reach of the average person. Computers connected to the Internet, part of our daily living, have led to the formation of online communities. In the spirit of communal efforts, a community cannot be controlled or managed into a specific form or direction. A community has a need to concentrate its efforts towards a common goal or vision, therefore sufficiently nonrestrictive infrastructure is needed to enable the community members to contribute towards their goal. We design and build infrastructure to support a virtual community, according to the needs of the community. Community members can easily locate and exchange files among each other, interact in private and public chat rooms by means of instant text messages, as well as make announcements and participate in group discussions in a Web based environment. Additional needs are identified and tended to by means of various value adding services. We also formulate a management strategy to lead the community towards self-sustenance / Thesis (M. Ing. (Computer and Electronical Engineering))--North-West University, Potchefstroom Campus, 2009.
68

Building a scalable virtual community on commodity hardware and open source software / by Andreas Alberts

Alberts, Andreas Jacobus January 2008 (has links)
The information era has brought upon us waves of change that brings affordable technology Within the reach of the average person. Computers connected to the Internet, part of our daily living, have led to the formation of online communities. In the spirit of communal efforts, a community cannot be controlled or managed into a specific form or direction. A community has a need to concentrate its efforts towards a common goal or vision, therefore sufficiently nonrestrictive infrastructure is needed to enable the community members to contribute towards their goal. We design and build infrastructure to support a virtual community, according to the needs of the community. Community members can easily locate and exchange files among each other, interact in private and public chat rooms by means of instant text messages, as well as make announcements and participate in group discussions in a Web based environment. Additional needs are identified and tended to by means of various value adding services. We also formulate a management strategy to lead the community towards self-sustenance / Thesis (M. Ing. (Computer and Electronical Engineering))--North-West University, Potchefstroom Campus, 2009.
69

Entwicklung von thermisch gespritzten Schichtverbundwerkstoffen durch Optimierung robotergestützter Brennerbewegungsabläufe

Candel Ruiz, Antonio January 2009 (has links)
Zugl.: Stuttgart, Univ., Diss., 2009
70

Metodik för robotsimulering och programmering av bågsvetsrobotar / Methodology for robot simulation and programming of arc welding robots

Hänninen, Sofia, Karlsson, Gunilla January 2008 (has links)
<p>Det finns flera fördelar med robotiserad bågsvetsning jämfört med manuell bågsvetsning. När det gäller produktivitet och repeterbarhet är robot överlägsen människa, vilket gör att produkterna håller jämnare kvalitet. I slutet av 80-talet började offline-programmering att tillämpas. Att programmera en robot offline innebär att utföra programmeringen med dator utan direkt tillgång till roboten. Genom simulering visualiseras ett robotprogram i en grafisk modell av den fysiska robotcellen utan att den fysiska roboten behöver tas ur produktion. För att systemet för offline-programmering (OLP) ska vara effektivt, måste dess modellers kinematik överensstämma med dess fysiska motsvarigheter. En virtuell modell av en cell skiljer sig dock alltid något från verkligheten. Därför krävs kalibrering När simuleringsprogrammet är färdigt och kalibreringen är utförd, ska programmet översättas till ett för roboten specifikt programspråk. Detta görs genom en så kallad translator.</p><p>Denna rapport har skrivits på uppdrag av Delfoi. Delfoi har i flera år använt sig av DELMIA IGRIP för offline-programmering av bågsvetsningsrobotar. DELMIA har nu gett ut en ny generation program i den gemensamma plattformen V5. Plattformen innehåller bland annat DELMIA V5 Robotics och CATIA V5. Området för bågsvetsning har varit relativt outforskat. Därför vill företaget undersöka hur långt V5 Robotics har utvecklats inom detta område. Syftet är att undersöka om utvecklingen av V5 Robotics kommit tillräckligt långt för att kunna säljas till kund för offline-programmering av bågsvetsning.</p><p>Arbetet påbörjades genom att kartlägga den arbetsmetodik som Delfoi använder sig av vid bågsvetsning i IGRIP. Detta har skett i programvaran UltraArc, som innehåller IGRIP’s applikation för bågsvetsning. Dessutom gjordes en kartläggning av användandet av AMP, Arc weld Macro Programming, vid offline-programmering av bågsvetsning. Nästa del var att ta fram en metodik för bågsvetsning i V5 Robotics. De båda programmen och dess metodik har sedan jämförts, för att ta reda på om V5 Robotics är tillräckligt utvecklat för att migrera från IGRIP till V5 Robotics. Demonstrationer av arbetssättet i V5 Robotics har genomförts på Delfoi samt hos en av Delfois kunder, BT Industries i Mjölby.</p><p>Författarnas slutsats är att V5 Robotics är redo att användas för OLP av bågsvetsning. För de företag som använder sig av CATIA V5 finns det stora fördelar med att starta migrationen från IGRIP till V5 Robotics. Metodiken mellan de båda mjukvarorna har stora likheter, men vissa delar har utvecklats till det bättre i V5 Robotics. Dock kan den nya programvaran behöva testas i verkliga projekt för att säkerställa att hela programmeringsprocessen fungerar tillfredsställande innan bytet genomförs.</p> / <p>There are several advantages in robotic arc welding, compared to manual arc welding. When it comes to productivity and repeatability, robot is superior to man, which generates more even quality in products. In the end of the 1980’s, offline programming was put into practice. To program a robot offline means to perform the programming on a computer with no direct access to the robot. Through simulation, the robot program is visualized as a graphic model of the actual workcell, without having to take the actual robot out of production. For the offline programming system (OLP) to be efficient, the kinematics of the models need to correspond to its physical counterpart. A virtual model is always slightly different from the reality. That is why calibration is necessary. When the simulation program is complete and the calibration is done, the program needs to be translated to the language of the target robot. This is done through a post processor.</p><p>This thesis was written as an assignment from the company Delfoi. Delfoi has been using DELMIA IGRIP for offline programming of robotic arc welding for several years. DELMIA now has released a new generation of programs in the common platform V5. The platform includes for example DELMIA V5 Robotics and CATIA V5. The area of arc welding has been relatively unexplored. That is why the company wants to investigate how far V5 Robotics has developed in this area. The purpose is to investigate if the development of V5 Robotics has come far enough for V5 Robotics to be taken to customers for OLP of arc welding.</p><p>The work was begun by surveying the methodology used by Delfoi in arc welding in IGRIP. This has been done in the software UltraArc, which consists of the arc welding application from IGRIP. There was also a surveillance of the application of AMP, Arc weld Macro Programming, in offline programming of arc welding. The next step was to evolve a methodology for arc welding in V5 Robotics. The two softwares and their methodologies were then compared to find out whether or not V5 is enough developed for migration from IGRIP to V5 Robotics. Demonstrations of the method of working in V5 Robotics were held on Delfoi and on BT Industries in Mjölby, which is one of Deloi’s clients.</p><p>The conclusion of the writers is that V5 Robotics is ready to be used in OLP of arc welding. For companies using CATIA V5, there are great advantages in migrating from IGRIP to V5 Robotics. The methodoldgies of the softwares show great similarities, but some parts have been developed to the better in V5 Robotics. Though, the new software needs to be tested in real projects to assure that the entire process of programming functions satisfying before the change is completed.</p>

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