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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.
21

Καταγραφή και επεξεργασία των γεωπεριβαλλοντικών χαρακτηριστικών για το Δήμο Νηλέως με τη χρήση των Γεωγραφικών Συστημάτων Πληροφοριών / The analyse of the geoenvironmental characteristics of area Nileos with the use of Geographical Information Systems

Αγγελή, Βασιλική 14 May 2007 (has links)
Kαταγραφή και Επεξεργασία για το Δήμο Νηλέως των τοπογραφικών, γεωλογικών και πληθυσμιακών χαρακτηριστικών με τη χρήση των Γ.Σ.Π. / The analyse of the topographical and geological characteristics and also elements about the popularity of area Nileos with the use of G.I.S.
22

Parental choice in secondary education : socio-spatial dynamics and motivation

Parsons, Edward Michael January 1999 (has links)
This thesis has two main aims. First, to establish whether the strengthening in 1988 of the right of parents to choose a secondary school for their child has led to increased travel to out-of-catchment schools in a case study area. Second, to identify the extent of socio-spatial variation of patterns and trends in choice of school. Secondary school transfer data relating to over 16,000 children for 1991 and 1993 to 1995 was analysed in a Geographical Information System (GIS). One hundred and sixty two parents of children about to transfer to secondary school were interviewed with the objective of revealing the contextual factors underlying the patterns and trends of pupil movements identified in the course of the GIS analysis. The practice and outcomes of parental choice were examined at four scales: the parent, the neighbourhood, the school and the LEA Area. Whilst the main value of this thesis lies in its presentation of empirical evidence of the socio-spatial outcomes of school choice, the results are placed in the context of relevant theoretical perspectives. The study finds that the proportion of children transferring to out-of-catchment secondary school has increased between 1991 and 1995 but that any increase in parental choice is constrained by a variety of factors that interact in complex ways to produce substantial socio-spatial variation in its expression. It is concluded that policy and practice relating to school choice can substantially affect educational equity and efficiency. It is recommended that the operation of local education markets be more closely monitored by LEAs and that GIS analysis, as used in this study, is an important tool for this purpose.
23

Urban land use modelling from classified satellite imagery

Mesev, T. Victor January 1995 (has links)
No description available.
24

Coastal aquaculture and resources management in the Mecoacan estuary, Tabasco, Mexico

Perez-Sanchez, Eunice January 2002 (has links)
By dealing with aspects of coastal aquaculture and resources management, an analysis is herein presented at the macro-scale using GIS techniques for the coastal zone of Tabasco state, and at the micro-scale with the description of the characteristics of a coastal community located in the Mecoacan estuary. Transfer of appropriate aquaculture technologies and introduction of sustainable farming systems are major challenges. The total area identified for aquaculture development through the GIS modelling accounted for 23 462 ha, 80% of which were located in the Centla Biosphere Reserve (Centla and Macuspana). The suitable area identified through the multi-criteria evaluation provided a structure in which requirements for aquaculture development could be met. An analysis of the fanning systems in the Mecoacan estuary was carried out to understand local attitudes, capabilities and processes and evaluate whether the potential identified by the GIS modelling can be realised. The results from participatory assessments showed that conditions within Mecoacan cooperatives have deteriorated and increasing interest in restructuring the organisations is regarded as a means of integrating employment and income generation alternatives such as aquaculture practices, to support and improve current levels of fisheries production, and to achieve gains in market development. The analysis of the economics of Mecoacan fishermen suggests that rural problems have not yet been engaged in progressive policies. It seems that previous forms of governance have been maintained to shore up power instead of laying the groundwork for viable rural production, as it is clear that some fishermen are competitive while others are not, regardless of whether or not they are associated in cooperatives. The large-scale exploitation of resources, degradation of the environment and increased conflict over resources in coastal communities suggest the need of an integrated multi-sectoral approach. A strategy towards an integrated coastal management for Tabasco coastal zone is discussed, including those related to aquaculture development.
25

Mapping practice : on the contingent politics of geographical information systems in UN peace operations

Loughlan, Victoria Elisabeth Elvira January 2014 (has links)
This thesis investigates the use of Geographical Information Systems (GIS) mapping in UN Peace Operations. On the one hand, GIS use has been assumed to increase the efficiency and coordination of multi-dimensional peace missions. On the other, the Western universalist epistemology underlying GIS is thought to render its application, particularly in non-Western contexts neo-colonialist. These two framings of GIS as either inherently scientifically progressive or politically oppressive are over-deterministic. I argue that the politics of GIS use is contingent upon the ways in which understandings of the map are negotiated in practice. As an ethnographic study of three UN GIS mapping sites (a field mission in Timor-Leste, the Cartographic Section at the UN headquarters, and the GIS Center at the UN Logistics Base), drawing on interviews with practitioners, the thesis gives an account of a) the role of GIS in the field mission, b) GIS practitioners’ management of the technology and their everyday interaction with their clients, and c) its organization within the United Nations. In the thesis I conceptualize an epistemological fault between the professional communities of mappers and their clients which organizes GIS use. This fault separates those who understand the map as political abstract model from those who see it as a mere image of the world. As a consequence, it also separates those who understand mapping as a political practice from those who see it as mere matter of logistics. The meaning and organization of GIS use is thus contingent upon how these different understandings are contested or affirmed in the interaction between mappers and clients. Overall, this thesis emphasizes the role of understanding technology, space and logistics in the context of the politics of Peace Operations.
26

A CASE STUDY ON USING GIS AS A TOOL TO ENABLE LEARNING OF SPATIAL PROBLEM SOLVING ABILITIES IN AN ONLINE ENVIRONMENT

Ball, Kendall C. 16 January 2010 (has links)
RENR 405 GIS Environmental Problem Solving is a course offered at Texas A
27

Geotecnologias digitais no ensino médio: avaliação prática de seu potencial

Di Maio, Angelica Carvalho [UNESP] 02 July 2004 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:30:27Z (GMT). No. of bitstreams: 0 Previous issue date: 2004-07-02Bitstream added on 2014-06-13T20:21:04Z : No. of bitstreams: 1 dimaio_ac_dr_rcla.pdf: 7208216 bytes, checksum: b807084d55f2e96d80b4a7024da95d17 (MD5) / A informatização está sendo introduzida na educação básica; contudo, ainda são limitadas, no País, as análises objetivas sobre sua real contribuição no ambiente escolar. Esta pesquisa se insere neste contexto, obtendo, a partir de teste na área de Geografia, indicadores do desempenho e da aceitação da educação informatizada no âmbito formal do ensino médio. Desta forma, este trabalho avaliou o ensino informatizado e pela Internet envolvendo geotecnologias, bem como gerou em ambiente digital o meio para esta avaliação. Foram desenvolvidas unidades instrucionais digitais, abrangendo cartografia, sensoriamento remoto e sistemas de informação geográfica, em consonância com os Parâmetros Curriculares Nacionais. Enfocou-se, por exemplo, aspectos da vegetação e ocupação urbana. Em tempo real, podem ser acessados dados de previsões meteorológicas e de queimadas, entre outros. Realizou-se a avaliação do material gerado junto aos professores e alunos de duas escolas públicas de São José dos Campos, SP, que indicou aproveitamento geral positivo e aceitação desta nova opção de ensino. O protótipo de Ensino Digital gerado, denominado GEODEM, utiliza versão simplificada do aplicativo SPRING na realização de exercícios. As informações dos alunos e professores forneceram indicadores e orientações quanto à incorporação de novas tecnologias para melhoria do ensino médio, em particular, na escola pública... / Computers are being introduced in basic education; however, objective analyses in the country regarding their effective contribution in the school environment are still limited. This research is related to this context, and from a test in the field of Geography obtained performance and acceptance indicators of digital education within the formal scope of secondary education. Computer-aided teaching, including Internet access and uses of geotechnologies were evaluated, and to do so the media needed for the evaluation was also produced. Digital educational units were developed, including cartography, remote sensing and a geographic information system, in accordance to the national official curricular guidelines. Focused were, among other subjects, vegetation and urban occupation changes; these tools allowed real-time access to weather forecasts and occurrences of forest fires data. The digital material evaluation was carried out with teachers and students of two public schools in Sao Jose dos Campos, SP; and indicated a general positive use and acceptance of this contemporary education option. The education prototype developed, called GEODEM, used the SPRING software base for the exercises. Information supplied by the students and teachers provided indicators and orientations for the incorporation of new technologies to improve secondary education, particularly in the public school...(Complete abstract click electronic access below)
28

Zoneamento ambiental como subsídio à gestão dos recursos hídricos na bacia hidrográfica do rio Capivari (SP)

Napoleão, Ricardo Pacheco [UNESP] 08 May 2003 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:26:12Z (GMT). No. of bitstreams: 0 Previous issue date: 2003-05-08Bitstream added on 2014-06-13T20:33:59Z : No. of bitstreams: 1 napoleao_rp_me_rcla.pdf: 3421790 bytes, checksum: 06666fbe30cc8c667b1737d893641378 (MD5) / Esse trabalho corresponde a um zoneamento ambiental da bacia hidrográfica do rio Capivari-SP com base em critérios dedutivos que levam em consideração aspectos ambientais relativos à área de estudo. Os aspectos ambientais considerados para a realização do zoneamento foram o elemento climático precipitação, a geologia, a geomorfologia, a pedologia, o uso e ocupação do solo e a cobertura vegetal. Com base nas informações ambientais disponíveis foi possível a elaboração de mapas de integração ambiental. Foram realizados três mapas de integração, o mapa de compartimentos ambientais, o mapa de vulnerabilidade aos processos erosivos e o mapa de potencial de retenção hídrica. O primeiro mapa corresponde a um mapa síntese dos aspectos ambientais da área de estudo e os outros correspondem a mapas elaborados partir de critérios dedutivos aplicados à base de informações e que consideram aspectos teóricos produzidos sobre os temas. O mapa final de zoneamento ambiental foi realizado considerando a aplicação de critérios sobre os mapas de integração e sobre o mapa de uso e ocupação dos solos e cobertura vegetal. Fez-se uso de técnicas de sistemas de informações geográficas para a integração e elaboração das informações referentes as etapas para a realização do zoneamento ambiental. / This work corresponds of an environment zoning of Capivari vale in the State of São Paulo. This zoning have with base deductive criterions that admit environment aspects of study area. The environment aspects use for realization of zoning was the element climatic precipitation, the geology, the geomorphology, the pedology, the use and occupation of soils and the vegetable cover. With base in available environment information was possible the construction of environment integration maps. Was constructed three integration maps: the map of environment compartments, the map of risk of erosion processes and the map of potential of water retention. The first map correspond of one synthesis map of environment aspects of study area and the others, correspond maps constructed with base in deductive criterions and with theoretical aspects about the theme. The final map of environment zoning was realized with the application of criterions over the integration maps and over the map of use and occupation of soils and vegetable cover. In this work was used techniques of geographical information systems for integration and construct of information referring to the stages for realization of the environment zoning.
29

Geotecnologias digitais no ensino médio : avaliação prática de seu potencial /

Di Maio, Angelica Carvalho. January 2004 (has links)
Resumo: A informatização está sendo introduzida na educação básica; contudo, ainda são limitadas, no País, as análises objetivas sobre sua real contribuição no ambiente escolar. Esta pesquisa se insere neste contexto, obtendo, a partir de teste na área de Geografia, indicadores do desempenho e da aceitação da educação informatizada no âmbito formal do ensino médio. Desta forma, este trabalho avaliou o ensino informatizado e pela Internet envolvendo geotecnologias, bem como gerou em ambiente digital o meio para esta avaliação. Foram desenvolvidas unidades instrucionais digitais, abrangendo cartografia, sensoriamento remoto e sistemas de informação geográfica, em consonância com os Parâmetros Curriculares Nacionais. Enfocou-se, por exemplo, aspectos da vegetação e ocupação urbana. Em tempo real, podem ser acessados dados de previsões meteorológicas e de queimadas, entre outros. Realizou-se a avaliação do material gerado junto aos professores e alunos de duas escolas públicas de São José dos Campos, SP, que indicou aproveitamento geral positivo e aceitação desta nova opção de ensino. O protótipo de Ensino Digital gerado, denominado GEODEM, utiliza versão simplificada do aplicativo SPRING na realização de exercícios. As informações dos alunos e professores forneceram indicadores e orientações quanto à incorporação de novas tecnologias para melhoria do ensino médio, em particular, na escola pública...(Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Computers are being introduced in basic education; however, objective analyses in the country regarding their effective contribution in the school environment are still limited. This research is related to this context, and from a test in the field of Geography obtained performance and acceptance indicators of digital education within the formal scope of secondary education. Computer-aided teaching, including Internet access and uses of geotechnologies were evaluated, and to do so the media needed for the evaluation was also produced. Digital educational units were developed, including cartography, remote sensing and a geographic information system, in accordance to the national official curricular guidelines. Focused were, among other subjects, vegetation and urban occupation changes; these tools allowed real-time access to weather forecasts and occurrences of forest fires data. The digital material evaluation was carried out with teachers and students of two public schools in Sao Jose dos Campos, SP; and indicated a general positive use and acceptance of this contemporary education option. The education prototype developed, called GEODEM, used the SPRING software base for the exercises. Information supplied by the students and teachers provided indicators and orientations for the incorporation of new technologies to improve secondary education, particularly in the public school...(Complete abstract click electronic access below) / Orientador: Janine Gisele Le Sann / Coorientador: Alberto Waingort Setzer / Banca: Regina Araújo de Almeida / Banca: Tania Maria Sausen / Banca: Magda Adelaide Lombardo Fruehauf / Banca: Rosângela Doin de Almeida / Doutor
30

Integrating Geographical Information Systems and Artificial Neural Networks to improve spatial decision making

Eksteen, Sanet Patricia 20 October 2010 (has links)
GIS has been used in Veterinary Science for a couple of year and the application thereof has been growing rapidly. A number of GIS models have been developed to predict the occurrences of certain types of insect species including the Culicoides species (spp), the insect vectors responsible for the transmission of the African horse sickness (AHS) virus. AHS is endemic to sub-Saharan Africa and is carried by two midges called Culicoides Imicola and Culicoides Bolitinos. The disease causes severe illness in horses and has significant economic impact if not dealt with timeously. Although these models had some success in the prediction of possible abundance of the Culicoides spp. the complicated nature and high number of variables influencing the abundance of Culicoides spp. posed some challenges to these GIS models. This informs the need for models that can accurately predict potential abundance of Culicoides spp to prevent unnecessary horse deaths. This lead the study to the use of a combination of a GIS and an artificial neural networks (ANN) to develop a model that can predict the abundance of C. Imicola and C. Bolitinos. ANNs are models designed to imitate the human brain and have the ability to learn through examples. ANNs can therefore model extremely complex features. In addition, using GIS maps to visualise the predictions will make the models more accessible to a wider range of practitioners. / Dissertation (MSc)--University of Pretoria, 2010. / Geography, Geoinformatics and Meteorology / MSc / Unrestricted

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