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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.
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Showing 801 to 808 of 808 (0.02 seconds)| 801 |
Integrating Maintenance Planning and Production Scheduling: Making Operational Decisions with a Strategic PerspectiveAramon Bajestani, Maliheh 16 July 2014 (has links)
In today's competitive environment, the importance of continuous production, quality improvement, and fast delivery has forced production and delivery processes to become highly reliable. Keeping equipment in good condition through maintenance activities can ensure a more reliable system. However, maintenance leads to temporary reduction in capacity that could otherwise be utilized for production. Therefore, the coordination of maintenance and production is important to guarantee good system performance. The central thesis of this dissertation is that integrating maintenance and production decisions increases efficiency by ensuring high quality production, effective resource utilization, and on-time deliveries.
Firstly, we study the problem of integrated maintenance
and production planning where machines are preventively maintained in the context of a periodic review production system with uncertain yield. Our goal is to provide insight into the optimal maintenance policy, increasing the number of finished products. Specifically, we prove the conditions that guarantee the optimal maintenance policy has a threshold type.
Secondly, we address the problem of integrated maintenance
planning and production scheduling where machines are correctively maintained in the context of a dynamic aircraft repair shop. To solve the problem, we view the dynamic repair shop as successive static repair scheduling sub-problems over shorter periods. Our results show that the approach that uses logic-based Benders decomposition to solve the static sub-problems, schedules over longer horizon, and quickly adjusts the schedule increases the utilization of aircraft in the long term.
Finally, we tackle the problem of integrated maintenance planning and production scheduling where machines are preventively maintained in the context of a multi-machine production system. Depending on the deterioration process of machines, we design decomposed techniques that deal with the stochastic and combinatorial challenges in different, coupled stages. Our results demonstrate that the integrated approaches decrease the total maintenance and lost production cost, maximizing the on-time deliveries. We also prove sufficient conditions that guarantee the monotonicity of the optimal maintenance policy in both machine state and the number of customer orders.
Within these three contexts, this dissertation demonstrates that the integrated maintenance and production decision-making increases the process efficiency to produce high quality products in a timely manner.
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The social responsibility of South African trade unions : a labour law perspectiveManamela, Makwena Ernest 06 1900 (has links)
Trade unions have been in existence for many years. Although their introduction was generally met with resistance, since their establishment trade unions have been important agents of social change worldwide. Over the years, trade unions have been involved in politics and other societal activities. In South Africa, trade unions for many years not only fought for worker’s rights within the workplace but also beyond the workplace. Trade unions started as friendly societies aimed at assisting their members with various matters, including offering financial help for education purposes and also in cases of illnesses. Although the main purpose of trade unions is to regulate relations between employees and their employers, trade unions perform other functions in society which can be broadly referred to as their social responsibility role. Unlike corporate social responsibility, which is
recognised and formalised, trade union social responsibility is not, with the role and importance of social responsibility for trade unions having been largely ignored. This thesis aims at changing this by investigating their core responsibilities and their social responsibilities and subsequently making recommendations on how trade unions could recognise and accommodate their social responsibilities in their activities. It also considers factors that could assist trade unions in fulfilling their social responsibilities. Trade unions generally obtain legislative support for their core responsibilities, but not their social responsibilities; however this should not obstruct trade unions in such endeavours. As modern organisations it is high time that trade unions make a contribution towards sustainable development through their social responsibility role. / Private Law / LLD
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Sportovně relaxační centrum v Havlíčkově Brodě / Sports relaxation centre in Havlíčkův BrodBočková, Veronika Unknown Date (has links)
This diploma thesis deals with a project of an sports relaxation centre in Havlíčkův Brod Ledečská street on plots no. 561/1 and 664/17 that are slightly sloping. The building is non-basement with 2 above-ground floors. The exterior load-bearing walls are made of clay blocks complemented with thermal insulation system according to ETICS. The building foundations are designes as strip foundations from concrete. Horizontal load-bearing structures will be made of prestressed concrete floor slab Spiroll. The building is roofed with a warm flat roof. First ground floor consists of sport part, there are big and small gym, crossfit excercise hall, 3 excercises halls for group lessons and 2 squash courts. It is also possible to use workout playground which is approached from the gym. There is also a buffet near the entrance. Second ground floor serves for relaxation, there are salt cave, sauna world with 5 different saunas (Finnish and also steam) and Whirlpool. The sauna world has also a cooling pool. Visitors can also use the outdoor rest area with a cooling pond. There are also a massage room, pedicure/manicure, solarium and sports shop.
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Autosalon / AutosalonBalúch, Tomáš January 2017 (has links)
This master's thesis focuses on design and elaboration of documentation for construction of a Car Showroom. The building is divided to two functional parts. The building is to be situated on plot number 1333/21, cadastre unit: Bohunice. The building is to be located on an undeveloped plot in possesion of the investor. The parking lots are connected to a local road. All substantial infrastructures are located nearby the plot. The proposition and the design of the building have respect for both commune plan and current buildings. The documentation is elaborated with regard to the contemporary Czech legislative and standards. The project designs the building, which is divided in two functional parts: SO 01 & SO 02, both operationally and visually connected. Contructions of objects are structurally independent. The first object includes exhibition hall with capacity of 8 exhibited cars. There is also to be located the administrative part, waiting rooms for customers, facilities for employees and the warehouse. The second object includes car repair shop. There are also to be located facilities for employees of the service, workshop, room for a car handover, hand car wash and an utility room. Construction is designed as a reinforced concrete columnar structural system with prefabricated single footings, self-supporting foundation slab and reinforced concrete ceiling slab with integrated girders above first floor of the object SO 01. The roofs of the building are designed as a flat roofs and the support constructions are made of steel. Planned dimensions of autosalon are 41x18 metres. As a cladding of the first object is used the lightweight glass cladding. For masonry walls are used the 250 mm thick ceramic blocks, mineral insulation and ventilated external facade cladding with use of fiber-cement boards. Planned dimensions of car repair shop are 31x28 metres. As a cladding of the second object are used the sandwich panels with foam core made of PIR.
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MORAVSKÉ VINAŘSKÉ CENTRUM BRNO / Moravian wine centre BrnoPeková, Pavla January 2016 (has links)
This diploma thesis gives a proposal for a new Moravian wine center in the city center of Brno. Wine center is situated on the street Hlinka, where grapevines were planted in the Middle Ages. Demarcated land is narrow and elongated sloping towards to the south and connects the Yellow hills and the Brno Exhibition Centre. The main idea of this thesis is connect these two significant locations and offer the visitor a free passage along the entire length of the complex. Also main building Moravian Wine Centre reflects this fact and it expands the space of the street stalls and forms it into overgrown "arcade". The house is opened into this space - with glazed facade of the first two floors or with transmission into the rear wing. The main building consist of the cellar, where it is located wellness, winehouse, rentable wine boxes and tasting room connected with wine production. The rest of floors are designed for wine gallery, information center, reception, shop, restaurant, conference center and hotel. There is a café with roof terrace in the last floor. It offers a magnificent view into cityscape of Brno, Brno Exhibition Centre and the Yellow slope of the hill. There is designed a pond for relaxation in the courtyard. Nearby is situated Wine Institute building with facilities for making wine. In the second half of the land are located three blocks of luxury apartments in the middle of a vineyard. A leading construction is the most striking feature of the facade that reminds bougainvillea vines with vaulted arches wine cellars and attracts at first sight.
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Hudební život a významné hudební události u pražských křižovníků s červenou hvězdou v 18. století ve světle listinných pramenů / Music life and important music events at Prague Order of the Cross with Red Star in the 18th century in paper-source backgroundVeverka, Karel January 2017 (has links)
This dissertation thesis is focused on music performance within the bounds of Order of the Cross with Red Star in the 18th century. The history of the Knight's Order rises from the first half of the 13th century and concerns the only original Czech church order. In the 18th century Knights of the Cross belonged to the most significant patrons of Art in Czech lands. Church and monastery of St. František in Prague, the center of the Order, became the most influential culture center. The charity work of the Order of that time influenced the creation of the extraordinary institution - the Order's menza that had the significant importance for operating of organ lofts of St. František Church because it provided the sufficient amount of singers and musicians. The research is exclusively based on non-music materials deposited in the Cross paper fond (Nr.195) consigned in the 1st department of the National Archives in Prague. According the information of the inventory department, the fond contains altogether 2315 cartons of paper material and 3306 books. Until now, the researchers have been interested in these sources only marginally which was caused mostly by its disorderliness and most important discoveries have been realized mostly just by lucky coincidences. The main part of this work is devoted to St....
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Polyfunkční koncový dům v Karlových Varech / Multifunctional house in Karlovy VaryRůžička, Jiří January 2017 (has links)
The project solves a multifunctional Duma building in a vacant lot, contemplated the construction site is located in Carlsbad, in the street Vyhlíce. This is a protected site spa. Part of the project's layout and structural design of the house. It is a six-storey house with an attic and a basement floor. It is designed as a free-standing in the gap as the final house. The layout is divided into two complete units with their own input. There are spaces for business and residential units for permanent housing. Part of the living area are also room house equipment. Inputs to both parts are wheelchair accessible. The house is not wheelchair The house is designed as a brick building of brick masonry Porotherm the module dimensions of 250 (125) mm with reinforced concrete ceilings. Roofed by a hipped roof. The house is located on a private plot of 519 m2 built-up area of 221 m2. The land is gently sloping. The main orientation of the building to the cardinal's east and west. The south wall is adjacent to the neighboring house.
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GIS-based Episode Reconstruction Using GPS Data for Activity Analysis and Route Choice Modeling / GIS-based Episode Reconstruction Using GPS DataDalumpines, Ron 26 September 2014 (has links)
Most transportation problems arise from individual travel decisions. In response, transportation researchers had been studying individual travel behavior – a growing trend that requires activity data at individual level. Global positioning systems (GPS) and geographical information systems (GIS) have been used to capture and process individual activity data, from determining activity locations to mapping routes to these locations. Potential applications of GPS data seem limitless but our tools and methods to make these data usable lags behind. In response to this need, this dissertation presents a GIS-based toolkit to automatically extract activity episodes from GPS data and derive information related to these episodes from additional data (e.g., road network, land use).
The major emphasis of this dissertation is the development of a toolkit for extracting information associated with movements of individuals from GPS data. To be effective, the toolkit has been developed around three design principles: transferability, modularity, and scalability. Two substantive chapters focus on selected components of the toolkit (map-matching, mode detection); another for the entire toolkit. Final substantive chapter demonstrates the toolkit’s potential by comparing route choice models of work and shop trips using inputs generated by the toolkit.
There are several tools and methods that capitalize on GPS data, developed within different problem domains. This dissertation contributes to that repository of tools and methods by presenting a suite of tools that can extract all possible information that can be derived from GPS data. Unlike existing tools cited in the transportation literature, the toolkit has been designed to be complete (covers preprocessing up to extracting route attributes), and can work with GPS data alone or in combination with additional data. Moreover, this dissertation contributes to our understanding of route choice decisions for work and shop trips by looking into the combined effects of route attributes and individual characteristics. / Dissertation / Doctor of Philosophy (PhD)
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