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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.
361

Privatization of Airport Authority and Mass Transit Railway Corporation after 1997. / Privatization of Airport Authority and Mass Transit Railway Corporation after 1997.

January 1996 (has links)
by Ng Wai-Hung and Tong Chung-Yan = 吳偉鴻, 唐頌恩. / Thesis (M.B.A.)--Chinese University of Hong Kong, 1996. / Includes bibliographical references (leaves 181-187). / by Ng Wai-Hung and Tong Chung-Yan = Wu Weihong, Tang Song'en. / ACKNOWLEDGMENT --- p.ii / ABSTRACT --- p.iii / TABLE OF CONTENTS --- p.v / LIST OF APPENDICES --- p.vii / CHAPTER / Chapter I. --- INTRODUCTION --- p.1 / Chapter II. --- METHODOLOGY --- p.3 / Chapter III. --- LITERATURE REVIEW --- p.5 / Modes and Definitions --- p.5 / Motives and Objectives --- p.8 / The Issue Of Ownership --- p.12 / Objections --- p.15 / Case Study --- p.17 / British Airport Authority --- p.17 / The Albany County Airport --- p.23 / Los Angeles Airport --- p.25 / British Rail Privatization --- p.28 / Other Railway Privatization Examples in Europe --- p.35 / Railway Development and Operational Strategies in China --- p.37 / Privatization and Private Financing Examples in China --- p.45 / Private Financing Examples in Hong Kong - BOT --- p.52 / Kowloon-Canton Railway Corporation --- p.55 / Hospital Authority --- p.60 / Critical Success Factors --- p.64 / Chapter IV. --- SITUATIONAL ANALYSIS --- p.66 / Airport Authority --- p.66 / Background --- p.66 / Economical --- p.68 / Corporate Culture --- p.68 / Corporate Structure --- p.69 / Decision Making Process --- p.70 / Human Resources Policy --- p.70 / Potential for Efficiency Gain - Benchmarking --- p.71 / Competition --- p.74 / Profit Potential --- p.77 / Funding --- p.78 / Social --- p.80 / Aircraft Operators --- p.80 / Retailers --- p.81 / Airport Users --- p.82 / Authority Staff --- p.82 / The Public --- p.83 / Political --- p.84 / Summary --- p.88 / The Mass Transit Railway Corporation --- p.90 / Background --- p.91 / Introduction --- p.91 / Corporate Objectives --- p.93 / Economical --- p.94 / Corporate Structure --- p.94 / Management and ownership --- p.94 / Operating Organization --- p.96 / Customer Satisfaction --- p.98 / Market Analysis --- p.99 / Market Competition --- p.104 / Financial Conditions --- p.107 / Operational Performance --- p.119 / Social --- p.121 / Fare Policy --- p.121 / Employee Compensation --- p.125 / Political --- p.127 / The Local Government --- p.127 / China's Influences --- p.128 / Summary --- p.131 / MTRC Operating Railway and the Lantau and Airport Railway --- p.131 / MTRC New Extensions --- p.135 / Conclusions --- p.136 / Chapter V. --- RECOMMENDATIONS --- p.138 / Airport Authority --- p.138 / Short-term --- p.138 / Long-term --- p.139 / The Mass Transit Railway Corporation --- p.142 / Short-Term --- p.142 / Long-Term --- p.142 / Contingency Plan --- p.147 / APPENDIX --- p.152 / BIBLIOGRAPHY --- p.181
362

Aeródromos públicos e privados: os bens utilizados e cedidos aos particulares

Muraro, Igor Santos 20 March 2017 (has links)
Submitted by Filipe dos Santos (fsantos@pucsp.br) on 2017-03-30T13:29:01Z No. of bitstreams: 1 Igor Santos Muraro.pdf: 647376 bytes, checksum: e84f4e6aa3f2140a9c4575efd605213c (MD5) / Made available in DSpace on 2017-03-30T13:29:01Z (GMT). No. of bitstreams: 1 Igor Santos Muraro.pdf: 647376 bytes, checksum: e84f4e6aa3f2140a9c4575efd605213c (MD5) Previous issue date: 2017-03-20 / It is inteded, through this work, investigate the legal status of goods assigned to public and private airports, and all the activities that Federal Law 7.565/1986, the normative acts of ANAC and the concessions contracts of the airports, allow them to coexist in these areas. To do so, we first look at the concept of public areas, as well as its modality of use by individuals. Once this is done, we’ll turn our attention to private and public airports, as well as the kind of activities that the law allows to be performed in these areas, in order to verify the private or public nature of each one. Finally, under these premises, we identify the legal regime of the assets of privet airports, as well as those located at public airports, but ceded to private individual for their exploration / Pretende-se, por meio deste estudo, investigar o regime jurídico dos bens afetos aos aeródromos públicos e privados, bem como todas as inúmeras espécies de atividades que a Lei federal 7.565/1986, os atos normativos da ANAC e os contratos de concessões dos aeroportos, permitem que coexistam nessas áreas. Para tanto, primeiramente nos debruçamos sobre o conceito de bem público, bem como as suas modalidade de utilização pelos particulares. Feito isso, voltamos as nossas atenções aos aeródromos privados e públicos, bem como às espécies de atividades que a legislação de vigência permite que sejam desempenhadas nessas áreas para, com isso, verificar a natureza privada ou pública de cada uma delas. Por fim, com amparo nestas premissas, identificamos o regime jurídico dos bens dos aeródromos privados, bem como daqueles situado nos aeródromos públicos, porém cedidos aos particulares para sua exploração
363

Ruído sonoro no entorno de aeroportos: um estudo de caso no aeroporto de Ribeirão Preto / Noise in the vicinity of airports: a case study in Ribeirão Preto airport

Dinato, Antonio Carlos 27 June 2011 (has links)
Com o aumento do tráfego aéreo no aeroporto de Ribeirão Preto - SP e o conhecimento de várias reclamações sobre o incômodo sonoro junto ao Ministério Público é apresentada uma análise, através de simulação computacional, de como ficou as curvas de ruído deste aeródromo. O objetivo deste estudo foi verificar como a população, que está no seu entorno, é afetada pela operação das aeronaves e qual o percentual a ser encontrado após a simulação realizada com o programa INM (Integrated Noise Model). A simulação indicou que o aumento das operações no Aeroporto Leite Lopes SBRP não ocasionou um impacto maior na população afetada dentro da área definida pela curva de 65 dB(A), ficando este valor dentro de parâmetros aceitáveis pelas normas adotadas. A velocidade e a direção dos ventos locais contribuem para o aumento do impacto ambiental, sugerindo a necessidade de alterar as rotas das aeronaves conforme ocorrerem estas mudanças meteorológicas. O estudo indicou a necessidade de alteração das rotas de pouso e decolagem. Orientar os pilotos através dos controladores de voo que pousos e decolagens sejam efetuados pela cabeceira da pista 36 (trinta e seis), prolongando o eixo de decolagem em mais 2 milhas náuticas ou 2 km. Para mitigar o efeito do impacto produzido pelas operações das aeronaves no aeroporto, se faz necessário a realização de novos estudos para que possamos orientar o planejamento urbano do entorno utilizando novas rotas de voos com novos levantamentos de campo e simulações. / With increasing air traffic at the airport of Ribeirão Preto - SP and the knowledge of numerous complaints about noise nuisance with the Public Ministry, it is presented an analysis through computer simulation of how would be the noise curves of this airfield. The objective of this study was to determine how the population, which is in its surroundings, is affected by the operation of aircraft and what percentage to be found after the simulation performed with the program INM (Integrated Noise Model).The simulation indicated that the increase in operations in Leite Lopes Airport - SBRP did not cause increases in the affected population within the area defined by the curve 65 dB(A), with this value within acceptable parameters by the standards adopted. The speed and direction of local winds contribute to the increased environmental impact, suggesting the need to change the routes of aircraft as these weather changes occur. The study indicated the need for change in takeoff and landing routes. Guide the pilots through the flight controllers that takeoffs and landings are made by the end of the runway 36 (thirty six), extending the shaft off at over 2 nautical miles or 2 km. To mitigate the effect of the impact produced by aircraft operations at the airport, it is necessary to carry out further research so we can guide the planning of urban environment using new flight routes with new field surveys and simulations.
364

Sistema logístico de recepção e movimentação de cargas aéreas: o caso do Pólo Indústrial de Manaus (PIM)

Nascimento, Enily Vieira do 13 December 2011 (has links)
Made available in DSpace on 2015-04-22T22:10:32Z (GMT). No. of bitstreams: 1 Enily Vieira.pdf: 1694755 bytes, checksum: 6d8dfa6ad931b649316127bb22700791 (MD5) Previous issue date: 2011-12-13 / The airport infrastructure and services of customs clearance of imported cargo can be considered a competitive advantage of companies in the Industrial Pole of Manaus (PIM). Reducing the time of cargo clearance would be just one advantage. The study aims to propose a management model agile and flexible in receiving air cargo imported inputs so that it satisfactorily meets the agile supply chain, which has the ability to respond to change, diversity, the unpredictable demands of customers, and which reduces the risk of pipeline breaks for companies in the PIM. This work, which culminates with a case study not only addresses the manufacturers of high-tech and innovative products that are of high value added, but all the actors (INFRAERO, RFB, ANVISA, MAP, broker, importing companies) involved import cargo, since his arrival in TECA to the delivery of cargo to the importer. The research call attention to the importance of infrastructure and services in the fast release of imported cargo through a management model able to include in the PIM requirements of external competitiveness of supply chains, using appropriate strategies such as model uncertainty supply chain (MICS). As a result, obtained presents an alternative model identified as the Special Customs Regime of Industrial Warehouse on Computerized Control (Ricof), considered an instrument of attraction and facilitator of global business development of products considered as part of the chain of uncertainty, so that gain is observed not only the logistical and tax, knowing that in Brazil there are no special schemes and atypical, as the companies of the Industrial Pole of Manaus (PIM). / A infraestrutura aeroportuária e os serviços de desembaraço aduaneiro de cargas importadas podem ser considerados uma vantagem competitiva das empresas no Pólo Industrial de Manaus (PIM). A redução do tempo de liberação de cargas seria apenas uma das vantagens. O estudo tem como objetivo propor um modelo de gerenciamento ágil e flexível na recepção de cargas aéreas de insumos importados de modo que este atenda satisfatoriamente a Cadeia de Suprimentos Ágil, que tem a capacidade de responder as mudanças, diversidades, demandas imprevisíveis dos clientes, e que reduz os riscos de interrupções dos fornecimentos para as empresas do PIM. Este trabalho, que culmina com um estudo de caso, não somente aborda os fabricantes de produtos high-tech e inovadores, que são de alto valor agregado, mas todos os atores (INFRAERO, RFB, ANVISA, MAPA, DESPACHANTE, Empresas Importadoras) envolvidos na importação da carga, desde sua chegada no TECA até a entrega da carga para o importador. A pesquisa dá visibilidade à importância da infraestrutura e rapidez nos serviços de liberação de cargas importadas, através de um modelo de gerenciamento capaz de incluir o PIM nas exigências da competitividade externa entre as cadeias de suprimento, fazendo uso de estratégias adequadas como o modelo de incerteza da cadeia de suprimentos (MICS). Como resultado obtido é apresentado um modelo identificado como alternativa ao Regime Aduaneiro Especial de Entreposto Industrial sobre Controle Informatizado (RICOF), considerado instrumento de atração e facilitador de desenvolvimento das empresas globais de produtos considerados como integrantes da cadeia de incerteza, de modo que seja observado o ganho logístico e não apenas o tributário, sabendo que no Brasil não se inclui os regimes especiais e atípicos, como as empresas do Pólo Industrial de Manaus (PIM).
365

POTENCIALIDADES E IMPACTO ECONÔMICO DAS CARGAS AÉREAS NO NOVO AEROPORTO DE GOIÂNIA

Magalhães, Danilo Nogueira 25 June 2018 (has links)
Submitted by admin tede (tede@pucgoias.edu.br) on 2018-10-01T18:12:04Z No. of bitstreams: 1 DANILO NOGUEIRA MAGALHÃES.pdf: 1353811 bytes, checksum: 91486d52a20c4f3b4617285bc1a86e60 (MD5) / Made available in DSpace on 2018-10-01T18:12:04Z (GMT). No. of bitstreams: 1 DANILO NOGUEIRA MAGALHÃES.pdf: 1353811 bytes, checksum: 91486d52a20c4f3b4617285bc1a86e60 (MD5) Previous issue date: 2018-06-25 / Analyze means of transport is fundamental for the understanding of the formation of large urban centers and economic development, whether local, regional or national level. Based on this premise, this study sought to point out the economic potential and the challenges encountered in the new air terminal in Goiânia, Goiás state, opened in the year 2016. In addition, addressed the relationship between logistics and the means of transport, particularly air transport, the importance of airport infrastructure efficiently to the dynamics of the market, as well as the relationship between the airport of Goiânia and regional development. It was verified that: even with the inauguration of the new terminal, there was no significant increase in the volume of cargo transported; the base of the economy in Goiás depends fundamentally on the road and rail modes, with the exception of pharmaceutical and automotive industries, which use the air service; and the proximity to Brasília hinders investment and development in the sector, as it is not economically viable to two poles nearby. / Analisar meios de transporte é fundamental para a compreensão acerca da formação dos grandes centros urbanos e o desenvolvimento econômico local, regional e nacional. Com base nessa premissa, o presente estudo buscou apontar as potencialidades econômicas e os desafios encontrados no novo terminal aéreo de Goiânia, estado de Goiás, inaugurado no ano de 2016. Diante disso, abordou-se a relação entre a logística e os meios de transporte, em especial o aéreo, a importância de uma infraestrutura aeroportuária eficiente para a dinâmica de mercado, bem como a relação entre o aeroporto de Goiânia e o desenvolvimento regional. Constatou-se que: mesmo com a inauguração do novo terminal, não houve aumento significativo no volume de cargas transportadas; a base da economia em Goiás depende fundamentalmente dos modais rodoviário e ferroviário, com exceção das indústrias farmacêutica e automobilística, que utilizam o serviço aéreo; e a proximidade com Brasília dificulta investimentos e desenvolvimento no setor, visto não ser economicamente viável dois polos próximos
366

Retour d’expérience pour l’évaluation des risques dans les bâtiments performants en zone aéroportuaire / Feedback for risk assessment in buildings performing in airport area

Camara, Tamba 14 November 2018 (has links)
Dans les pays en voie de développement, le rythme croissant de l’urbanisation entraîne un rapprochement rapide des habitations aux infrastructures des transports (aéroports, aérogares). En plus de ces constats, les conditions difficiles d’accès aux ressources énergétiques et l’inadéquation des techniques de construction avec le climat et l’environnement, les pays tropicaux doivent s’orienter vers les techniques favorisant l’utilisation du potentiel de construction durable (concepts passifs et bioclimatiques) afin de garantir les conforts (aspects acoustique et thermique) des habitants au sein des bâtiments. Le potentiel de construction durable, actuellement faiblement exploré, est très important dans ces pays. Face à ces défis, le concept de bâtiment durable est l’une des meilleures alternatives pour tisser l’harmonie entre le bâtiment et son environnement. Les techniques de construction durable passent par la connaissance parfaite du site, du climat local, les besoins de conforts (aspects acoustique et thermique) des habitants. Dans le cadre de notre contribution à ces problématiques, une étude d’évaluation de risques affectant les performances des bâtiments a été initiée. Toutefois, la majeure partie des travaux qu'on retrouve dans la littérature se focalise sur l’utilisation des approches analytiques qui s’avèrent parfois insuffisantes, en l’absence de la prise en compte des réalités pratiques. Une méthodologie d’analyse et d’évaluation des risques affectant la performance dans les bâtiments basée sur l’approche de capitalisation et d’exploitation des connaissances issues des processus de retour d’expérience est développée. Deux bâtiments tests (un bâtiment aéroportuaire et un bâtiment résidentiel du type F3B) sont choisis à Bamako afin d’appliquer la méthode d’évaluation avec le concours des experts, des techniciens du secteur du bâtiment et des usagers. Pour le premier bâtiment, l’évaluation est relative aux risques affectant la performance acoustique dans le contexte aéroportuaire tandis pour le second, elle est relative aux risques affectant la performance énergétique dans le contexte bioclimatique. L’effort se concentre sur l'identification des non qualités et des facteurs d’inconfort dont la résolution contribue à améliorer la performance acoustique, énergétique et environnementale des bâtiments. Pour ce faire, des visites de terrain (enquêtes auprès des usagers des bâtiments et interviews auprès des acteurs de la construction) ont été réalisées pour identifier d’une part les besoins et le comportement des habitants et d’autre part les techniques et les connaissances pratiques des acteurs de construction. Des fiches de questionnaires ainsi que des capteurs de mesures in situ (thermomètres, hygromètres et sonomètres) et des logiciels de traitements de données sont utilisés comme outils pour l’évaluation de risques affectant les performances sur les bâtiments tests. Des investigations sous forme de mesures in situ des paramètres (de températures, d’humidité et de niveaux de pression acoustique) respectivement à l’intérieur et à l’extérieur du bâtiment aéroportuaire et du bâtiment résidentiel du type F3B sont menées à l’aide de ces capteurs. Ces données sont ensuite traitées à l’aide des logiciels de traitements de données pour intégrer les connaissances et stratégies de construction durable. La capitalisation des informations issues de ces études sert de retour d’expérience à travers des propositions de solutions correctives et de bonnes pratiques pour la résolution des problèmes de performance (les pathologies, les dommages, et les autres dysfonctionnements) observés sur les bâtiments. / In developing countries, the growing importance of urbanization is bringing housing closer to transport infrastructure (airports, air terminals). Beside these observations, the difficult conditions of access to energy resources and the construction techniques inadequacy with the climate and the environment must enable tropical countries to move towards lasting potential construction techniques and use (passive, bioclimatic concepts) in order to guarantee the comfort (acoustic, thermal) of the inhabitants within the buildings. The sustainable construction potential, poorly explored, is very important in these countries. In the face of these challenges, the lasting buildings concept is one of the best alternatives for weaving harmony between the building and its environment. Lasting construction techniques go through a perfect knowledge of the site, the local climate and the inhabitants needs of comfort (acoustic, thermal). As part of our contribution to these issues, a risk assessment study and risk factors for building performance are initiated. However, most of the literature works focuses on the analytical approaches use that are sometimes insufficient, in the absence of taking into account practical realities. An analysis and assessment of risk performance methodology in buildings based on the capitalization and knowledge exploitation approach from return experience processes is developed. Two test buildings (an airport building and a F3B type residential building) are chosen in Bamako in order to apply the evaluation method with experts’ assistance, building technicians and users. For the first building, the assessment is relative to acoustic performance risks in the airport context while for the second; it relative to energy performance risks in the bioclimatic context. The effort focuses on the identification of non-qualities and the discomfort factors whose resolution contributes to improving the building acoustic, energy and environmental performance. To do this, field visits (surveys with building users and interviews with construction stakeholders) were conducted to identify on the one hand the residents’ needs and behavior and on the other hand, the construction actors’ techniques and practical knowledge. Questionnaire forms as well as measuring sensors in-situ (thermometers, hygrometers and sound level meter) and data processing software are used as tools for the performance risks assessment on test buildings. Investigations in the form of in-situ measurements, parameters (temperature, humidity and sound pressure levels) respectively inside and outside the airport and residential building type F3B are carried out with these sensors. These data are then treated with data processing software to integrate lasting construction knowledge and strategies. The capitalization of the information from these studies serves as experience feedback through corrective solutions propositions and good practices for the performance problems resolution (pathologies, damages, and others dysfunctions) observed on buildings.
367

Spatial variations in the intra-urban response to a noise source

Conder, Wilbur David 01 May 1973 (has links)
Most research on the urban sonic environment has been recent. One finding has been that physical noise exposure indices calibrate poorly with human noise response. The vagaries of human response to noise have given impetus to research to isolate the factors that differentiate human response to noise. The present thesis continues this research. The thesis specifies human noise response to occur on three levels: awareness, annoyance, and complaint. The factors that structure each level of noise response are identified in the published Iiterature. Noise awareness is a function of noise exposure. Noise annoyance is a function of noise exposure to a lesser degree. In addition annoyance is structured by attitudes toward the noise source, special interests in its economic benefits and personal susceptibility to noise irritation. Complaint concerning noise involves the previous factors plus an affluence or socio-economic component. The trend as one moves upward in the noise response hierarchy is for the structuring factors to become specific to individuals rather than location. Hence, noise awareness with respect to a stationary noise source will vary spatially, while complaint will be random in space. In testing these premises the author has made use of noise exposure indices for Portland International Airport and a social survey of response in the area surrounding the airport. The noise exposure indices were supplied by the consulting firm of Bolt, Beranek, and Newman Inc. and the social survey was conducted and tabulated by the Center for Population Research and Census at Portland State University. Multivariate methods were used for testing the premises concerning the hierarchical relationships between awareness, annoyance, and complaint.The variables representing awareness, annoyance, and complaint are quantified from the survey data through principle component and factor scores computer programs. The noise awareness measure is selected for greatest emphasis since it underlies to annoyance and complaint. The noise awareness measure is investigated and errors in its measurement are estimated through psychometric methods. Trend surface techniques are used to test the spatial regularity of awareness, annoyance, and complaint. As hypothesized, awareness is regular in space, annoyance less so, and complaint is random. Through multiple regression analysis noise awareness is tested against socio-economic measures, noise exposure measures, attitudes, and special interest. Noise exposure variables account for the largest part of the variation in noise awareness. A trend surface analysis is conducted on the values of awareness predicted by a large number of exposure, attitude, and other variables. The process is repeated for the residual values from the multiple regression. Predicted values are systematic in space but the residual values are largely random. The predicted values are mapped and compared with the actual smoothed awareness response surface. The two maps correspond well. It is concluded that noise exposure corrected for ambient noise levels adequately approximates the noise awareness response surface.
368

Aircraft noise and public health : acoustical measurement and social survey around Sydney (Kingsford Smith) Airport

Issarayangyun, Tharit, Civil & Environmental Engineering, Faculty of Engineering, UNSW January 2005 (has links)
The development of major commercial airports promotes the air transport industry and generates positive economic benefits to the airport and to its host economy. However, external costs are associated with these benefits. Any increase in aircraft movement causes negative environmental impacts, especially noise pollution. Governments have reduced aircraft noise levels at their sources, or introduced aircraft noise management strategies (ANMS); however the problems have never been satisfactorily resolved. This research aims at developing a better understanding of the impacts of aircraft noise on community health and well-being by exploring two core research questions: (1) ???Is health related quality of life worse in communities chronically exposed to aircraft noise than in communities not exposed????; and (2) ???Does long-term aircraft noise exposure associate with adult high blood pressure level via noise stress as a mediating factor????. The Sydney (Kingsford Smith) Airport has been selected as a case study. The health survey instruments have been developed and piloted, and then translated from English into Greek and Arabic. A postal self-administrative health survey (with follow-up letters) has been implemented in the areas surrounding Sydney Airport (called ???aircraft noise exposure group???) and in the matched control group. The total sample size was 1,500 with 47% response rate. This thesis has developed a ???new??? noise index (named Noise Gap Index, NGI) to describe and assess aircraft noise in such a way that is easily understood by the layperson. Factorial analysis of covariance revealed that ???Health related quality of life, in term of physical functioning, general health, vitality, and mental health, of community chronically exposed to high aircraft noise level were worse than the matched control area???. Binary logistic regression analysis found that ???Subjects (aged 15 ??? 87) who have been chronically exposed to high aircraft noise level have the odds of 2.61 of having chronic noise stress. In addition person who have chronic noise stress have the odds of 2.74 of having hypertension compared with those without chronic noise stress???. Finally, the robust hypotheses of effects of aircraft noise on community health and well-being for future experimental study were proposed.
369

An Inquiry Into The Architectural Program Of The Contemporary Airports

Kaya, Asli 01 September 2012 (has links) (PDF)
Architectural program of airports has evolved from being a mere transportation space into a &ldquo / city&rdquo / containing various activities along with transportation at its core. This thesis aims to discuss and criticize it, by arguing that the city and the airport are to be integrated by giving a special importance to the user (both the passenger and the inhabitant of the city). The discussion is focused on three dialectically related constituents of the program: Process, User and Product (building). Rather than the architectural design process generating the built form, process refers to the influential actors in shaping the space of airport. User refers to both the active and passive actors of the organization of space. Product denotes the space itself, transformed according to the wishes and demands of both the user and the mode of production. These constituents are accepted as significant factors in the development of the airport architectural program in a way to answer the requirements of the integration with the city. In contemporary airports, users do not have enough rights over the space to be able to show their existence against the domination of capital&#039 / s spaces. Therefore, this thesis proposes an alternative airport architectural program integrating the airport with the city by placing the user at the center.
370

Efficient Solution Procedures for Multistage Stochastic Formulations of Two Problem Classes

Solak, Senay 24 August 2007 (has links)
We consider two classes of stochastic programming models which are motivated by two applications related to the field of aviation. The first problem we consider is the network capacity planning problem, which arises in capacity planning of systems with network structures, such as transportation terminals, roadways and telecommunication networks. We study this problem in the context of airport terminal capacity planning. In this problem, the objective is to determine the optimal design and expansion capacities for different areas of the terminal in the presence of uncertainty in future demand levels and expansion costs, such that overall passenger delay is minimized. We model this problem as a nonlinear multistage stochastic integer program with a multicommodity network flow structure. The formulation requires the use of time functions for maximum delays in passageways and processing stations, for which we derive approximations that account for the transient behavior of flow. The deterministic equivalent of the developed model is solved via a branch and bound procedure, in which a bounding heuristic is used at the nodes of the branch and bound tree to obtain integer solutions. In the second study, we consider the project portfolio optimization problem. This problem falls in the class of stochastic programs in which times of uncertainty realizations are dependent on the decisions made. The project portfolio optimization problem deals with the selection of research and development (R&D) projects and determination of optimal resource allocations for the current planning period such that the expected total discounted return or a function of this expectation for all projects over an infinite time horizon is maximized, given the uncertainties and resource limitations over a planning horizon. Accounting for endogeneity in some parameters, we propose efficient modeling and solution approaches for the resulting multistage stochastic integer programming model. We first develop a formulation that is amenable to scenario decomposition, and is applicable to the general class of stochastic problems with endogenous uncertainty. We then demonstrate the use of the sample average approximation method in solving large scale problems of this class, where the sample problems are solved through Lagrangian relaxation and lower bounding heuristics.

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