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Sequencing and Sorting in Just-In-Time Production
13,90 CHF *
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Diploma Thesis from the year 2004 in the subject Mathematics - Applied Mathematics, grade: 1.3, Brandenburg Technical University Cottbus (Institut für Mathematik), 60 entries in the bibliography, language: English, abstract: Since Karl Benz built the first motor driven vehicle in 1886 a new industry was born which is still one of the most important and influential sectors of economy. His 0.9 horse-power engine only reached 15 kilometers per hour but gave the starting shot for more and more inventions and a rapidly growing automobile industry. First cars where used for racing only but during the first period of the twentieth century it established its position as a new and individual means of transport. In 1936 the first Volkswagen called Beetle, a vehicle for the masses, was developed by Ferdinand Porsche and has been produced for 67 years. The last Beetle was built in the summer of 2003 in Mexico. Worldwide 100.000 new cars are being produced every day and in 2010 there will be over 1 billion private cars all over the world. This development requires perfectly organized and well optimized production processes and still calls for new inventions and improvements. The production process in automobile manufacturing splits into three major stages. The moulding and welding of the car body in the body shop, the painting of the welded car bodies in the paint shop and the customization of the painted car bodies in the assembly shop. The work presented here deals with the last two stages. The production plant contains a system of production lines which sometimes split into parallel lines and reunite to a non-parallel line. Each of these lines can require some set of restrictions on the cars sequenced on that line. In the paint shop the cars are being painted on a line by a robot which through jets sprays the color onto the surface of the car body. Whenever the next car on the line has the same color the jets can be re-used. Otherwise they have to be cleaned which requires time and causes pollution. Therefore, minimizing the color changes that occur in the paint shop can save non negligible costs. In the assembly shop separate teams install different options into the cars such as sun-roof, air-conditioning, central locking system etc. Therefore the order of the cars on the line has to fulfill some restrictions considering that each option requires a fixed time for installation and resources which have to be available at the time of installation.

Anbieter: Orell Fuessli CH
Stand: 06.07.2020
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Grid Connection of Gotikhel Micro Hydropower Pl...
27,80 € *
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Master's Thesis from the year 2011 in the subject Electrotechnology, grade: 1.7, Brandenburg Technical University Cottbus, course: Electric Power Engineering - Micro Hydro-power and its grid connection, language: English, abstract: 1. Introduction Gotikhel Hydropower Plant (GHP) is one of the nearest Isolated Micro Hydropower Plant (MHP) from the main city out of 650 isolated MHPs available in Nepal which still supplies electrical power to 173 Households, one hull machine and one school. The extension of national grid has made life of MHPs insecure as consumers want the energy from more reliable source i.e. from national grid. In the context of Nepal, especially in rural areas, construction of MHPs are very costly and because of unplanned extension of national grid, some of MHPs are in closing conditions and same cases will continue more in future. So, there is a huge risk in big investments and valuable efforts of villagers. Synchronization of MHPs to the national grid will be the ultimate solution for the existence of MHPs in Nepal. So, this Master Thesis will also focus on grid connection of GHP and consequent impacts on technical as well as financial sectors before and after the grid connection of GHP. 2. Objectives Taking GHP as a private/ community pilot project for grid connection in Nepal, the following objectives of grid-connected MHPs has been generalized: . To ensure optimum use of national resource and fulfill the possible new demand of energy in rural areas since grid connection and Power Exchange Agreement (PEA) allow the Rural Electrification Entity (REE) to sell their excess energy to Nepal Electricity Authority (NEA) grid and the REE can purchase the required energy from the grid when the demand of its members surpass the generation by MHP(s) under it. . To facilitate development of new MHPs by local communities, Individual Power Producers as they can profiteer by selling the excess energy to the grid. . To ensure market for spill energy of MHPs. . 3. Contents of the thesis This thesis includes following: . Introduction of GHP . Problem Analysis of GHP . Technical aspects of GHP - Turbine and turbine selection - Turbine Control System - Generator - Distribution Transformer - Switchgear Equipment - Protection system - Transmission and distribution systems - Instrumentation - Single line diagram of GHP - Synchronization . Short circuit and load flow analysis . Financial aspects of GHP . Impacts of grid connection . Conclusion

Anbieter: Thalia AT
Stand: 06.07.2020
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Sequencing and Sorting in Just-In-Time Production
10,99 € *
ggf. zzgl. Versand

Diploma Thesis from the year 2004 in the subject Mathematics - Applied Mathematics, grade: 1.3, Brandenburg Technical University Cottbus (Institut für Mathematik), 60 entries in the bibliography, language: English, abstract: Since Karl Benz built the first motor driven vehicle in 1886 a new industry was born which is still one of the most important and influential sectors of economy. His 0.9 horse-power engine only reached 15 kilometers per hour but gave the starting shot for more and more inventions and a rapidly growing automobile industry. First cars where used for racing only but during the first period of the twentieth century it established its position as a new and individual means of transport. In 1936 the first Volkswagen called Beetle, a vehicle for the masses, was developed by Ferdinand Porsche and has been produced for 67 years. The last Beetle was built in the summer of 2003 in Mexico. Worldwide 100.000 new cars are being produced every day and in 2010 there will be over 1 billion private cars all over the world. This development requires perfectly organized and well optimized production processes and still calls for new inventions and improvements. The production process in automobile manufacturing splits into three major stages. The moulding and welding of the car body in the body shop, the painting of the welded car bodies in the paint shop and the customization of the painted car bodies in the assembly shop. The work presented here deals with the last two stages. The production plant contains a system of production lines which sometimes split into parallel lines and reunite to a non-parallel line. Each of these lines can require some set of restrictions on the cars sequenced on that line. In the paint shop the cars are being painted on a line by a robot which through jets sprays the color onto the surface of the car body. Whenever the next car on the line has the same color the jets can be re-used. Otherwise they have to be cleaned which requires time and causes pollution. Therefore, minimizing the color changes that occur in the paint shop can save non negligible costs. In the assembly shop separate teams install different options into the cars such as sun-roof, air-conditioning, central locking system etc. Therefore the order of the cars on the line has to fulfill some restrictions considering that each option requires a fixed time for installation and resources which have to be available at the time of installation.

Anbieter: Thalia AT
Stand: 06.07.2020
Zum Angebot