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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.
11

TSMC Customer Partnership Service Strategy

Wu, Peir-jeng 04 September 2007 (has links)
Customer service is one of the most important ingredients of the marketing mix for products and services. High quality customer service helps to create customer loyalty. A company would quickly lose business to competitors if under estimating the power of services. Therefore, the service management becomes more focus in foundry business. TSMC is the largest pure foundry service company with 50% of market share in foundry business. Customer partnership service is one of the core competences of TSMC. Long- term partnership is what TSMC treats customers and it¡¦s achieved by the win-win service strategy. There is a fewer paper to study the customer service in semiconductor foundry filed. This thesis is to study customer service strategy of TSMC. Why do chip design companies select TSMC as their major foundry source.
12

Research of Value Chain in Taiwan Foundry Industry Investment in China

Tsou, Li-Jen 17 June 2002 (has links)
Abstract This research describes the value chain development of Taiwan foundry industry¡¦s investment in China and analyzes how the foundry firm establishes its value chain and strategy in the different industry environment. The research also raises inferences about Taiwan foundry industry¡¦s value-chain mode and business model and expects to be reference materials for the industry and government. The research content includes the analysis of Taiwan and China semi-conductor industries¡¦ environment, the analysis of the industry value chain, and the scenario analysis of China¡¦s industry environment and Taiwan¡¦s foundry industry de velopment. Finally, here come the research findings of this thesis: 1. The foundry industry in Taiwan already established a stable competitive advantage. After investing in China, it will also play a key role in the development of China¡¦s semi-conductor industries. 2. Taiwan foundry industry will be the coordinator of China¡¦s semi-conductor industry value-chain, and promote the development there. 3. There exist the demand and trend which the foundry industry will raise its added value in the semi-conductor industry value-chain, especially after investing in China. 4. When the foundry industry tries to raise its added value, some activities like IP providing and IC design service will be the optimum alternatives. 5. After investing in China, the development of the foundry industry will be highly related to the progress of local system industry and IC design industry. 6. No matter how industry environment evolve, the foundry industry will change its value chain structure on the basis of reducing the transaction cost and developing the synergy. 7. The foundry industry won¡¦t do the real integration unless the foundry¡¦s potential profit be limited or the real integration can bring the huge profit. 8. No matter integrate or not, the foundry industry shouldn¡¦t compete with its customer. 9. The foundry industry establish a symbiosis system with its customer, but it will form the different strategies depend the customer classification.
13

Load-deformation behaviour of foundry moulding materials.

Bennett, C. G. Unknown Date (has links)
No description available.
14

Avaliação da influência do cromo e molibdênio na solidificação e formação de rechupes em ferros fundidos cinzentos. / Evaluation of the influence of chromium and molibdenum in the solidification and shrinkage defects in grey cast iron.

Stuewe, Luciana 02 October 2008 (has links)
Ferros fundidos cinzentos ligados com cromo e molibdênio são utilizados em cabeçotes de motor para se obter alta resistência à tração e à fadiga (com menores seções), maior resistência à temperaturas elevadas e maior estabilidade térmica. No presente trabalho é feita uma avaliação da influência da adição dos elementos de liga cromo e molibdênio na solidificação e na formação de rechupes em ferros fundidos cinzentos, através da fundição de corpos de prova com diferentes composições químicas, variando porcentagens de cromo e molibdênio comumente utilizadas em ferros fundidos cinzentos de alta resistência. Além da composição química, foi variada a porcentagem de inoculação nas ligas, através da adição de 0,2% e 0,6% do inoculante FeSi75. A simulação de fundição, utilizando o software para simulação do processo de fundição Magmasoft, foi aplicada para desenvolver um corpo de prova com tempo de solidificação similar ao de um cabeçote de motor. Depressões foram detectadas no topo dos corpos de prova, tendo sido caracterizadas como rechupes primários; microrechupes foram detectados no centro térmico, caracterizados por rechupes secundários. O volume das depressões foi medido, através de preenchimento com água. Os microrechupes foram avaliados de forma qualitativa através do ensaio de líquidos penetrantes e análise metalográfica. A avaliação da seqüência e morfologia de solidificação das fases formadas foi realizada através de análise térmica e, posteriormente, através de análises metalográficas. As temperaturas de reação eutética estável e metaestável foram calculadas através de software de termodinâmica computacional Thermocalc. A adição dos elementos de liga Cr e Mo em menores teores não causaram diferenças significativas no volume das depressões, tão pouco na presença de microrechupes. Porém adições combinadas de 0,4%, 0,6% e 1,0% de cromo e molibdênio apresentaram um aumento significativo no volume de depressão. Os resultados de simulação apresentaram resultados e curvas de solidificação similares às obtidas na prática industrial e maior tendência para a formação de rechupes primários com adições crescentes de cromo e molibdênio. Já em relação à tendência à formação de microrechupes somente adições combinadas de 0,6% e 1,0% apresentaram efeito significativo. Maiores porcentagens de adição de inoculantes aumentaram o volume tanto de depressões quanto de microrechupes, principalmente nas ligas contendo 1,0% de cromo e molibdênio. / Grey cast iron alloyed with chromium and molydnenum are used in cylinder heads to obtain high fatigue and ultimate strength (with less wall thickness), higher strength to elevated temperatures and higher thermal stability. This research presents an evaluation of the influence of chromium and molybdenum in solidification and shrinkage defects of grey cast iron alloys. The evaluation was made varying the percentages of chromium and molybdenum commonly used in high resistance grey cast iron alloys. Also the percentage of inoculation was varied with additions of 0,2% and 0,6% of the inoculant FeSi75. The foundry simulation, applying the software to simulate the foundry process MagmasoftÒ, was used to develop a test cast that should present the same solidification time of a cylinder head. Primary shrinkage defects were detected in the top of the test parts characterized as sinks and secondary shrinkage defects were detected in the hot spots, characterized as micro shrinkage porosity. Sinks volumes were measured by water filling. The micro shrinkage porosity was evaluated by liquid penetrant examination and metallographyc analysis. The solidification sequence and morphology of the phases were evaluated by thermal and metallographyc analysis. The stable and metastable eutectic reaction temperatures were calculated by ThermocalcÒ software. The compositions with less alloy additions did not present differences in the sinks or in the micro shrinkage porosity volumes. But combinations of 0,4%, 0,6% and 1,00 % of chromium and molybdenum presented a significant increase of sinks volumes. The simulation results presented similar results of solidification and cooling curves measured in the foundry and also presented the same tendency of primary shrinkage defects increase with additions of chromium and molydenum. Combinations of 0,6% and 1,00% of chromium and molybdenum presented an increase of micro shrinkage porosity volumes. Higher inoculant additions increased the volumes of both defects, mainly in combinations of 1,00% of chromium and molybdenum.
15

Avaliação da influência do cromo e molibdênio na solidificação e formação de rechupes em ferros fundidos cinzentos. / Evaluation of the influence of chromium and molibdenum in the solidification and shrinkage defects in grey cast iron.

Luciana Stuewe 02 October 2008 (has links)
Ferros fundidos cinzentos ligados com cromo e molibdênio são utilizados em cabeçotes de motor para se obter alta resistência à tração e à fadiga (com menores seções), maior resistência à temperaturas elevadas e maior estabilidade térmica. No presente trabalho é feita uma avaliação da influência da adição dos elementos de liga cromo e molibdênio na solidificação e na formação de rechupes em ferros fundidos cinzentos, através da fundição de corpos de prova com diferentes composições químicas, variando porcentagens de cromo e molibdênio comumente utilizadas em ferros fundidos cinzentos de alta resistência. Além da composição química, foi variada a porcentagem de inoculação nas ligas, através da adição de 0,2% e 0,6% do inoculante FeSi75. A simulação de fundição, utilizando o software para simulação do processo de fundição Magmasoft, foi aplicada para desenvolver um corpo de prova com tempo de solidificação similar ao de um cabeçote de motor. Depressões foram detectadas no topo dos corpos de prova, tendo sido caracterizadas como rechupes primários; microrechupes foram detectados no centro térmico, caracterizados por rechupes secundários. O volume das depressões foi medido, através de preenchimento com água. Os microrechupes foram avaliados de forma qualitativa através do ensaio de líquidos penetrantes e análise metalográfica. A avaliação da seqüência e morfologia de solidificação das fases formadas foi realizada através de análise térmica e, posteriormente, através de análises metalográficas. As temperaturas de reação eutética estável e metaestável foram calculadas através de software de termodinâmica computacional Thermocalc. A adição dos elementos de liga Cr e Mo em menores teores não causaram diferenças significativas no volume das depressões, tão pouco na presença de microrechupes. Porém adições combinadas de 0,4%, 0,6% e 1,0% de cromo e molibdênio apresentaram um aumento significativo no volume de depressão. Os resultados de simulação apresentaram resultados e curvas de solidificação similares às obtidas na prática industrial e maior tendência para a formação de rechupes primários com adições crescentes de cromo e molibdênio. Já em relação à tendência à formação de microrechupes somente adições combinadas de 0,6% e 1,0% apresentaram efeito significativo. Maiores porcentagens de adição de inoculantes aumentaram o volume tanto de depressões quanto de microrechupes, principalmente nas ligas contendo 1,0% de cromo e molibdênio. / Grey cast iron alloyed with chromium and molydnenum are used in cylinder heads to obtain high fatigue and ultimate strength (with less wall thickness), higher strength to elevated temperatures and higher thermal stability. This research presents an evaluation of the influence of chromium and molybdenum in solidification and shrinkage defects of grey cast iron alloys. The evaluation was made varying the percentages of chromium and molybdenum commonly used in high resistance grey cast iron alloys. Also the percentage of inoculation was varied with additions of 0,2% and 0,6% of the inoculant FeSi75. The foundry simulation, applying the software to simulate the foundry process MagmasoftÒ, was used to develop a test cast that should present the same solidification time of a cylinder head. Primary shrinkage defects were detected in the top of the test parts characterized as sinks and secondary shrinkage defects were detected in the hot spots, characterized as micro shrinkage porosity. Sinks volumes were measured by water filling. The micro shrinkage porosity was evaluated by liquid penetrant examination and metallographyc analysis. The solidification sequence and morphology of the phases were evaluated by thermal and metallographyc analysis. The stable and metastable eutectic reaction temperatures were calculated by ThermocalcÒ software. The compositions with less alloy additions did not present differences in the sinks or in the micro shrinkage porosity volumes. But combinations of 0,4%, 0,6% and 1,00 % of chromium and molybdenum presented a significant increase of sinks volumes. The simulation results presented similar results of solidification and cooling curves measured in the foundry and also presented the same tendency of primary shrinkage defects increase with additions of chromium and molydenum. Combinations of 0,6% and 1,00% of chromium and molybdenum presented an increase of micro shrinkage porosity volumes. Higher inoculant additions increased the volumes of both defects, mainly in combinations of 1,00% of chromium and molybdenum.
16

The research of Wafer Foundry industry competition advantage

Wu, Chien-Nan 14 August 2004 (has links)
After Taiwan and China joined WTO and the world industry globalization trend, the competition is intense that enterprise management and worldwide allocation between Pure-Play and IDM wafer foundry. And in Mainland China, they promoted and developed IT industrial very active, specially in wafer foundry industry. By Michael E. Porter¡¦s Diamond Theory, 1. Production ; 2. Demand ; 3. Relevant and Support industry ; 4. Strategy, Structure and Competitor of Enterprises. Meanwhile, it is important of government policy, culture and leadership glamour. If we can well manage these influence factors, the country will be increased their national competition advantage. So, these are government's important duty. In this thesis, there is one synthetical comparison with five factors, such as Technical Capability, Manufacturing Managemet, Financial Advantage, Cost Controlling and Marketing. We try to study the Strategy of Positioning, Cluster Effect and Competition Advantage for wafer foundry industry of Taiwan. In Taiwan, Taiwan Semiconductor Manufacturing Corporation (TSMC) and United Microelectronics Corporation (UMC), they are world-leading semiconductor foundry companies. There is one competitor --- IBM with technology and price and another potential competitor --- SMIC with low price and capacity of mass-production
17

Use Diamond Model to study the business model of Taiwan foundry industry as they invest in Mainland China

Wen, Cheng-Bin 19 June 2002 (has links)
Mainland China is an emerging market. The labor cost is very cheap in the market, and the growth rate of market is high. For saving manufacturing cost and expanding business, many companies, including those from Taiwan, invest in Mainland China. For fulfilling a great amount of demand in IC and encouraged by China government, SMIC has established a foundry in China. TSMC and UMC also plan to set up their foundries there in 2002. What is the best strategy and how to compete are the most things the Taiwan companies concerned, since the foundry industry in Mainland China is developing. This study is based on the Diamond Model (Porter, 1990) and foreign invest theories, and tries to analyze the foundry industrial structure in Taiwan and China. This study also finds out the strategic considerations, which can explain why Taiwan foundry companies invest in China. Then this study predicts the situation of the development of foundry industry in Mainland China in the future. Finally, the study tries to suggest better strategies to Taiwan foundry companies. This study finds out the strategic considerations of Taiwan foundry companies when they invest in Mainland China. They are: 1.Ownership advantage of technology, capacity and service; 2.Location advantage of the market potential in China and reward offered by China government; 3.Internalization advantage of setting up a wholly owned subsidiary; 4.Competitive pressure in foundry industry. The strategic suggestions are: 1.Being the leading company in Mainland China; 2.Using the resources of China market; 3.Focusing on foundry; 4.Cross-Strait joint production. Making use of these four suggestions, Taiwan foundry companies will enlarge the market share in the worldwide foundry market.
18

Fluid flow, particle motion and mixing in ladle metallurgy operations

Mazumdar, Dipak, 1932- January 1985 (has links)
Extensive computer predictions have been carried out by the author to study flow, addition dispersion and particle motion during central gas injection into cylindrical vessels. In conjunction with numerical computations, experiments were conducted in a 0.30 scale water model of a 150 ton steel processing ladle, using a Froude number scaling criterion. Two typical gas injection configurations (i.e., conventional central injection and C.A.S. alloy addition procedure) were investigated. / Flow visualization studies were carried out using a suspended network of silken threads, mean velocity vectors and overall flow patterns were determined by video recording techniques, while mean velocity vectors and associated turbulence level were also measured with laser doppler velocimetry. These measurements show very reasonable agreement with equivalent numerical predictions. / To simulate the subsurface motion of additions, spherical wooden balls of various densities were dropped from typical heights, and their subsurface trajectories, immersion times, etc., recorded by means of a video recorder. Frame by frame analysis of the video tapes showed trends which are in good accord with computed trajectories. / Mixing times of simulated molten additions were measured by the conductivity measurement technique. These were compared with prediction from an equivalent tracer dispersion model and excellent agreement achieved. / For industrial application, flow, particle motion, and mixing times in a 150 ton steel processing ladle have been predicted and their technological significance discussed.
19

Thermal conductivity of bentonite-bonded molding sands at high temperatures

Park, Sang-il 05 1900 (has links)
No description available.
20

A study of metal penetration in commercial steel castings

Svoboda, John McVay, January 1966 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1966. / eContent provider-neutral record in process. Description based on print version record. Bibliography: l. 73-90.

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