Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 1981. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ROTCH. / Bibliography: leaves 311-320. / by Benjamin Reif. / Ph.D.

The following essays examine the nature of product co-production patterns in India—what factors cause these patterns to emerge, and why they are valuable to study. The first chapter establishes a motivation. It takes a measure of product co-production established in the literature—the “proximity” matrix of Hidalgo et al. (2007)—and shows that this measure is an excellent predictor of new product additions by firms and states, even controlling for other potentially relevant explanatory variables. The following chapter employs a reduced-form approach with regression analysis to uncover the factors that could be giving rise to these patterns of co-production. Using this approach, demand complementarities and patterns of input similarity seem to have the most explanatory power for the observed patterns. The final chapter improves the estimation by incorporating product paths and firm profitability into a structural model. We adapt the gravity model of Morales et al. (2015) to our setting to identify costs associated with adding new products based on characteristics of the relationship between the firm and its potential products. In the model, firms seek to expand their product scope into the most profitable products, where this profit is diminished by “distance” they would have to traverse through a characteristic space. Using the moment inequalities method of Pakes et al. (forthcoming), we are able to estimate which dimensions in that space have the greatest effect on firm profits. We find the physical distance to the nearest location of production had the greatest impact, followed by input similarity between their products and potential products.

by Ng Suk Fung. / "February 18, 2002." / Thesis (Ph.D.)--Chinese University of Hong Kong, 2002. / Includes bibliographical references (p. 215-222). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Electronic reproduction. Ann Arbor, MI : ProQuest Information and Learning Company, [200-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Mode of access: World Wide Web. / Abstracts in English and Chinese.

A utilização de gás natural tem ganhado espaço na matriz energética brasileira, principalmente dentro do setor industrial. Para um conjunto de segmentos e processos industriais, a utilização de gás natural como energético ou matéria prima envolve significativos ganhos do ponto de visto ambiental, técnico e econômico. A hipótese motivadora deste trabalho está relacionada ao potencial papel de indutor do desenvolvimento regional que a disponibilidade de gás natural possui. Uma vez que a presença de gasodutos exibe um evidente padrão de concentração espacial bem definido, seria natural esperar que as indústrias que levassem em conta a disponibilidade deste energético em sua decisão de localização se tornassem mais concentradas, acompanhando o traçado dos principais gasodutos. Foram definidas duas principais vias de análise: (i) a avaliação do nível de concentração geográfica (ou espacial) da indústria, verificando-se a existência de padrões distintos para a média da indústria e um grupo de setores definidos como heavy users de gás natural (cerâmica, têxtil e química), e (ii) a avaliação e mapeamento das correlações espaciais entre o emprego industrial (proxy da atividade industrial) e a presença de gasodutos. Para o Brasil, os resultados não permitiram concluir pela existência de relação entre concentração industrial e disponibilidade de gás natural. Porém, para o Estado de São Paulo verificou-se que existe uma forte correlação positiva entre a presença de gasodutos e o nível de emprego para os segmentos heavy users, mesmo quando se consideram os efeitos de outras variáveis relevantes (custos de transporte, qualificação da mão de obra e ganhos com a especialização). / The use of natural gas has gained space in the Brazilian energy matrix, especially in the industrial sector. For a set of segments and industrial processes, the use of natural gas as a fuel or raw material involves significant environmental, technical and economic gains. The hypothesis motivating this work is the potential role that the availability of natural gas has as a promoter of regional development. The natural gas pipelines exhibits a clear pattern of spatial concentration, therefore it would be natural to expect that industries that took into account the availability of energy in their location decision became more concentrated, following the route of main pipelines. We defined two main pathways of analysis: (i) assessing the level of industry geographical (or spatial) concentration, verifying the existence of distinct patterns for the industry as a whole and a group of sectors defined as heavy users of natural gas (ceramics, textiles and chemicals), and (ii) the assessment and mapping of the spatial correlations between manufacturing employment (a proxy for industrial activity) and the presence of pipelines. For Brazil, the results failed to establish the existence of a relationship between industrial concentration and availability of natural gas. However, for the State of São Paulo has been found that there is a strong positive correlation between the presence of pipelines and employment for heavy users segments, even when considering the effects of other relevant variables (transportation costs, qualification of labor and gains from specialization - agglomeration economies).

Abstract With the decoding of human genome, biotechnology has been regarded as to be one of the most prospective technologies in the next decades. Many countries have actively undertaken various R&D projects in order to get the leading position in this field. According to American and European experience in developing biotechnology industry, the development of biotechnology park serves the purposes of bettering production environment domestically and drawing international investment. The main purpose of the study is to find the optimal location of biotechnology park. Using the Analytic Hierarchy Process (AHP), which has the characteristic with multi-criteria, indefinite, group decision-making, qualitative, this study has established an evaluation structure for development preference order based on biotechnology industry, science-based industrial park and location theory. The empirical study find out that the preference order from high to low of the priorities of the location choice factors is ¡§human resource,¡¨ ¡§R&D environment,¡¨ ¡§industrial environment,¡¨ ¡§public facilities¡¨ and ¡§communications and transportation.¡¨ And that the preference order from high to low of the optimal location of biotechnology industry is ¡§Hsin-Chu Science-based Park,¡¨ ¡§South Science-based Park¡¨ and ¡§Central Science-based Park.¡¨

published_or_final_version / abstract / toc / Geography / Master / Master of Philosophy

No abstract available. / Thesis (M.S.U.R.P.)-University of Natal, Durban, 1998.

No description available.

No description available.

Thesis (MA)--University of Stellenbosch, 2006. / Bibliography. Also available via the Internet.