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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.
331

Knowledge-based design of reconfigurable manufacturing system advisor.

Mpofu, Khumbulani. January 2010 (has links)
D. Tech. Mechanical Engineering. / Describes reconfigurable manufacturing (RM) is a paradigm that promises to meet the turbulent demands in current global manufacturing. The major findings of this thesis are as follows; 1. The functional description of the machine tool provides a handy mechanism of aiding COTS machine builders come up with vary configurations of machine tools and their classification from a predefined set of COTS modules. 2. The process of linking the respective part demands to the relevant COTS RMT is a rigorous and tiresome process that demands computational power provided for by the KBS. 3. The subjective linguistic manner of linking the parts and the machine configuration can be managed by including an objective constraint for the fuzzy model. 4. Coupling the decision making using a mathematical model with the use of a KBS brings about the optimum route to arriving to the desired configuration.
332

Securing the just-in-time delivery for the after-market : Study at Volvo car customer service

Allgurén, Olivia, Patama, Sanna January 2015 (has links)
The thesis has been performed at Volvo Car Customer Service in Gothenburg, Sweden. The output from the study will support Volvo to secure the Just-In-Time delivery of referrals for the after-market. The scope was limited to referrals from pre-planned orders, which occurs when there is no availability in the distribution centre where the orders were placed. Volvo's main warehouse in Europe is the Central Distribution Centre, which process referrals. The warehouse had an ongoing organisational change during this study. The concern was that the change would not lead to optimal conditions for processing referrals for different markets. It was therefore important to preserve the market knowledge in order to maintain a reliable referral service. A qualitative study was used and the information was gathered primarily through semi-structured interviews. Literature was studied both initially and continuously through the study. Analyse of the literature, current situation and data collection generated ideas for possible ways of securing the referral process and improvements. Benchmarking and Workshop was also performed in order to obtain further ideas. The result of this study was an information material containing information about all concerned markets, overview of referral flow and information regarding how the Central Distribution Centre needs to print referrals. The proposals suggested for future work were explained in long- and short-term. The short-term suggestions include use of the developed material in order to preserve the knowledge along with providing correct working conditions. For long-term suggestions focus has been on how to reduce or remove the printing problem. For future work Volvo Car Customer Service should consider these proposals in order to secure and improve the referral service.
333

Application of lean scheduling and production control in non-repetitive manufacturing systems using intelligent agent decision support

Papadopoulou, Theopisti C. January 2013 (has links)
Lean Manufacturing (LM) is widely accepted as a world-class manufacturing paradigm, its currency and superiority are manifested in numerous recent success stories. Most lean tools including Just-in-Time (JIT) were designed for repetitive serial production systems. This resulted in a substantial stream of research which dismissed a priori the suitability of LM for non-repetitive non-serial job-shops. The extension of LM into non-repetitive production systems is opposed on the basis of the sheer complexity of applying JIT pull production control in non-repetitive systems fabricating a high variety of products. However, the application of LM in job-shops is not unexplored. Studies proposing the extension of leanness into non-repetitive production systems have promoted the modification of pull control mechanisms or reconfiguration of job-shops into cellular manufacturing systems. This thesis sought to address the shortcomings of the aforementioned approaches. The contribution of this thesis to knowledge in the field of production and operations management is threefold: Firstly, a Multi-Agent System (MAS) is designed to directly apply pull production control to a good approximation of a real-life job-shop. The scale and complexity of the developed MAS prove that the application of pull production control in non-repetitive manufacturing systems is challenging, perplex and laborious. Secondly, the thesis examines three pull production control mechanisms namely, Kanban, Base Stock and Constant Work-in-Process (CONWIP) which it enhances so as to prevent system deadlocks, an issue largely unaddressed in the relevant literature. Having successfully tested the transferability of pull production control to non-repetitive manufacturing, the third contribution of this thesis is that it uses experimental and empirical data to examine the impact of pull production control on job-shop performance. The thesis identifies issues resulting from the application of pull control in job-shops which have implications for industry practice and concludes by outlining further research that can be undertaken in this direction.
334

The planning implications of just-in-time production systems : a case study of the automotive components industry.

Ellingson, Julie-May. January 1999 (has links)
No abstract available. / Thesis (M.T.R.P)-University Natal, Durban, 1999.
335

Intervention divine et violence sacrée dans les Gesta Dei per Francos de Guibert de Nogent et la Vita Ludovici Grossi regis de Suger

Thériault, Gabriel January 2008 (has links)
Mémoire numérisé par la Division de la gestion de documents et des archives de l'Université de Montréal
336

Jus ad bellum and Canada's war in Afghanistan

Lemay, Denise Marie 07 September 2012 (has links)
The purpose of this study is to examine the utility of a just war explanation in understanding Canada’s decision to enter into the war in Afghanistan. It examines Canada’s three phases of the war under the lens of jus ad bellum. The concentration is upon jus ad bellum’s core criteria of legitimate authority, public declaration of intent, just cause, last resort, reasonable chance of success and proportionality and then applies it to the three phases. By examining Canada’s international role, paying close attention to Canada’s association with the UN, NATO and its ally status with the United State are important explanations of why Canada entered into the Afghanistan war. This analysis strives to provide a holistic comprehension by exploring the utility of an ignored body of explanation and extrapolates from this analysis the contemporary use of jus ad bellum.
337

Modifying Lean Production for Implementation in Production of Digital, Customized Products

Kemperyd, Emmeline, Mideklint, Susanne January 2014 (has links)
Purpose To evaluate how lean production should be modified to be suitable for implementation in the production of digital, customized products and how the first phase of this implementation can be conducted. Research Questions RQ1: What constitutes waste when producing digital, customized products, and to what extent can the waste be eliminated? RQ2: Which lean concepts and tools are suitable to apply in the production of digital, customized products? RQ3: What steps are necessary for initial implementation of lean production for production of digital, customized products, and how should they be prioritized? Methodology The empirical findings are the result of a single case study focused around in-depth analysis and understanding of concepts and relationships. The data is collected through interviews work shops and observations during a period of three months. Conclusions RQ1: The types of waste are; Waiting, Transportation, Over processing or incorrect processing, Excess inventory, Unnecessary efforts, Defects and Unused employee creativity. Waste are further classified as removable, non-removable and in some instances necessary. RQ2: Unsuitable concepts: Value stream mapping (varying level of unsuitability), Kaikaku, Just in time, Stopping the  line (without modifications) and Physical visual controls. Redundant concept: Pull. Especially suitable concepts: 5 Why, Decentralized responsibility, Digital visual controls and Isolating variation. Suitable concepts: Elimination of waste, Root cause analysis, Genchi genbutsu, Kaizen events, Flow, Stopping the line (with modifications) and Standardization. RQ3: Step I: Aligning the production strategy and process with the organization’s strategy and goals. Step II: Standardization. / Syfte Att utvärdera hur lean production bör modifieras för att vara lämpligt för implementering i produktion av digitala, kundanpassade produkter och hur den första fasen av implementationen bör genomföras. Forskningsfrågor F1: Vad utgör slöseri när man producerar digitala, kundanpassade produkter, och i vilken utsträckning kan slöseriet elimineras? F2: Vilka lean-koncept och lean-verktyg är lämpliga att använda i produktion av digitala, kundanpassade produkter? F3: Vilka steg är nödvändiga för initial implementation av lean production i produktion av digitala, kundanpassade produkter, och hur ska de prioriteras? Metod En fallstudie med fokus kring djupgående analyser och förståelse för koncept och samband utgör de empiriska resultaten. Datan är inhämtad genom intervjuer, work shops ochobservationer under tre månader. Slutsatser F1: Typerna av slöseri är: väntetid, transport, onödiga eller felaktiga processteg, överproduktion, onödig ansträngning, defekter och outnyttjad kreativitet. Typerna av slöseri är vidare klassificerade som eliminerbara, icke eliminerbara eller i vissa fall nödvändiga. F2: Olämpliga koncept: värdeflödesanalys, kaikaku, just in time, jidoka, fysisk visuell kontroll. Redundanta koncept: pull. Speciellt lämpliga koncept: 5 Why, decentraliserat ansvar, digital visuell kontroll och isolering av variation. Lämpliga koncept: eliminering av slöseri, analys av rotorsaker, Genchi genbutsu, Kaizen event, Flöde, Jidoka (med modifikation) och Standardisering. F3: Steg I: Strömlinjeforma produktionsstrategin med organisationens strategi och mål. Steg II: Standardisering.
338

Idealism and Actualization. Saint-Just in Theory, Practice, and Exigency

Schamel, Craig R 01 January 2012 (has links)
Louis-Antoine Léon de Saint-Just (1767-1794) was a revolutionary, a statesman, and a political philosopher, yet it is largely only as a revolutionary that he is remembered. As a political person who occupied these three different but overlapping roles, Saint-Just is ideal as the subject and center of a study of actualization, the taking of political ideals into reality. Saint-Just’s political philosophy was that of an idealist, and yet he, by force of circumstance, ability, and audacity, had the opportunity in his short life to attempt to establish and put into practice his political ideals. In his work as a political person Saint-Just created templates for the understanding of the relationship between political theory and political action. Saint-Just’s political theory is examined in relation to his political action, using the concepts of ‘the natural’, ‘the civil’, ‘the social’ and ‘the political’, concepts which are central in Saint-Just’s political philosophy. Saint-Just’s formulations of these concepts, concepts which have also been central to the history of political philosophy, and his understanding of the relations between these concepts, helps to establish him as a political philosopher of some importance, as does the theory and practice approach to politics which his attempts demanded and which his political life demonstrated. In Saint-Just’s function as political philosopher the thesis finds the theoretical element of politics, which becomes redefined in its interaction with Saint-Just’s other functions as statesman and revolutionary, the latter two of which correspond roughly to practice and exigency. As a theorist who is also a statesman in a context of exigency, or revolution, Saint-Just’s political life is a constantly rearranged juxtaposition of theory, practice, and revolution, albeit one which never loses it essential ties to its philosophical base, even in the hours of greatest emergency. Such dedication to a philosophical base, one which refuses to dispense with political philosophy, demonstrates a new conception of political philosophy for the modern world, fills in elements of a theory of revolution as a phenomenon of both theory and action, and provides a contained case for examination of political philosophy and political action, questioning their disunity.
339

Material Handling System Design: A Case-Study in Bosch Rexroth Japan

Akincilar, Sera, Rad, Cameron January 2013 (has links)
In today’s fierce competitive global markets, customers are demanding adjustable lot sizes, shorter lead times, higher quality and flexibility; in short, they want it all. In order to stay competitive in the market, companies need to attain both customer satisfaction and cost reduction in production operations. Material Handling Systems (MHS) is the place to accomplish this goal, since they have a direct impact on production. Therefore, the aim of this study was to design an in-house MHS that could be efficient for the production it serves. With this intention, a case-study has been conducted in Bosch Rexroth Japan. During the study, the information gathered through various sources; interviews, observations and measurements. Further, the gathered data is evaluated according to main pillars of the theoretical framework, which includes design principles and physical elements, information and software, human and management. By analyzing the findings from literature review and empirical study, first problems and challenges related to MHSs are identified. Thereafter, possible features that the system should posses are elicited and a design is built out of the selected features. To conclude, the results show that the success is not solely depending on system’s physical attributes; on the contrary, it is more related to rapid and accurate information sharing within the system. Another vital element is the interaction between system and the people, who are utilizing and operating the system. In general terms, the research took MHS design problems from one-dimensional equipment selection processes and enriches them by adding information sharing, human and management angles to design steps.
340

Jus ad bellum and Canada's war in Afghanistan

Lemay, Denise Marie 07 September 2012 (has links)
The purpose of this study is to examine the utility of a just war explanation in understanding Canada’s decision to enter into the war in Afghanistan. It examines Canada’s three phases of the war under the lens of jus ad bellum. The concentration is upon jus ad bellum’s core criteria of legitimate authority, public declaration of intent, just cause, last resort, reasonable chance of success and proportionality and then applies it to the three phases. By examining Canada’s international role, paying close attention to Canada’s association with the UN, NATO and its ally status with the United State are important explanations of why Canada entered into the Afghanistan war. This analysis strives to provide a holistic comprehension by exploring the utility of an ignored body of explanation and extrapolates from this analysis the contemporary use of jus ad bellum.

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