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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.
1

Análise das adversidades climáticas no oeste paulista e norte do Paraná

Berezuk, André Geraldo [UNESP] January 2007 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:32:20Z (GMT). No. of bitstreams: 0 Previous issue date: 2007Bitstream added on 2014-06-13T19:25:54Z : No. of bitstreams: 1 berezuck_ag_dr_prud.pdf: 3585867 bytes, checksum: 369d960412156cb7787dd35cbfac2fd4 (MD5) / A análise dos modos de atuação dos mecanismos atmosféricos é uma das bases da ciência climatológica, pois, através dessas, os pesquisadores estão aptos a fazer as diagnoses regionais, as prognoses climáticas, avaliar o possível impacto de variações climáticas e desenvolver projetos para mitigá-los. Seguindo essa lógica, foi elaborada a análise de adversidade climática do oeste paulista e do norte do Paraná. Para a efetuação dessa tarefa, foi utilizada a técnica de análise rítmica de Monteiro, sendo pesquisados os anos de 1997, 1998 e 2001 nas localidades de Presidente Prudente, Maringá e Londrina. Além da pesquisa dos dados diários desses três anos, em que foram criados 108 gráficos de análise rítmica e 108 gráficos de eventos climáticos, foram analisados 27 anos de dados mensais e anuais (1976- 2003) que possibilitaram a elaboração de 54 figuras, 67 tabelas, 102 gráficos e 9 organogramas, em que foram analisadas as características atmosféricas regionais, observando possíveis tendências de alterações climáticas futuras. Foram constatados, ao longo da análise, que a área de estudo está passando por um processo de aquecimento de até 1ºC, além de um processo de fortalecimento sazonal, com as estações mais secas e chuvosas tornando-se mais bem definidas, o que pode causar, futuramente, uma maior quantidade de eventos extremos e adversidades climáticas, que, por sua vez, podem afetar as cidades e a produção agrícola. / Analyzing how the atmospheric mechanisms act is a great base of the climate science because it allows the researches to know about the regional weather aspects, to discuss the possible impact of climatic variations and to develop projects in order to protect the region against these possible variations in the soon future. Following this idea, we elaborated an analysis about hazards in the Western Sao Paolo State and the North Parana State in Brazil. We based on the Monteiro rhythm analysis method to study the cities Presidente Prudente, Maringa and Londrina in the years 1997, 1998 and 2001. Through the search of diary weather statistics we created 108 rhythm analysis graphics and 108 climatic event graphics. Besides them, we studied 27 years of mensal and annual statistics (1976 - 2003) which allowed the creation of 54 figures, 67 tables, 102 graphics and 9 examples. Through these we analyzed regional climatic aspects, searching for future tendencies of climate variations. It was verified by the analysis a warming of one Celsius degree at the studied areas and also a process of sazonalization which showed more clearly the division of wet and dry seasons. We see that it could result in the future more cases of hazards that could affect the cities and the agricultural production. The thesis revels that the climatic rhythms study, the interpretation of regional climatic variation and the study of the necessary actions to protect the areas against hazards are complex questions which involve great series of variables that, sometimes, the statistical techniques are not able to solve, despite its powerful and recognition in science. Because of that, it is extremely important the careful interpretation of climatic aspects by rhythm paradigm, mainly linking it with statistical techniques as well.
2

The network approach to urban regeneration: The case of Yeoville

Farouk, Mahomed Ismail 14 May 2008 (has links)
Abstract Yeoville presents a particular context of the inner city in decline and has been identified by the city as a suburb in need of regeneration. In 2004, The Yeoville Rockey/Raleigh High Street Development was conceived as the urban regeneration strategy for the upgrading of the suburb. The objectives of this strategy were to upgrade strategic public facilities and to improve urban management of the area over a period of five years. Through the prioritisation of a privatised urban management system, the aim was to attract a new middle class back into Yeoville (gentrification). However, the absence of a plan for dealing with the socio-economic challenges faced by the existing poorer residents has leads to cultural and class conflicts. International experience has shown that in order to achieve the long-term, strategic regeneration of poorer neighbourhoods, social networks and community development should be prioritised. An effective regeneration strategy should budget for capacity building from the outset and should involve citizens in the design and decision making process in order to ensure that the needs of all the local actors are met and that all possible resources are mobilised. At the forefront of this approach are alternative methodologies like social network analysis, which aim to reconnect the social, cultural and economic dimensions of society to rhythms of space and time. The focus on the mapping of existing social capital resources helps to pinpoint the opportunities, and constraints presented within neighbourhoods and ultimately guide the restructuring process in a meaningful and relevant way.
3

Análise das adversidades climáticas no oeste paulista e norte do Paraná /

Berezuk, André Geraldo. January 2007 (has links)
Orientador: João Lima Sant'Anna Neto / Banca: Margarete Cristiane de Costa Trindade Amorim / Banca: José Tadeu Garcia Tommaselli / Banca: Inês Moresco Danni-Oliveira / Banca: Emerson Galvani / A análise dos modos de atuação dos mecanismos atmosféricos é uma das bases da ciência climatológica, pois, através dessas, os pesquisadores estão aptos a fazer as diagnoses regionais, as prognoses climáticas, avaliar o possível impacto de variações climáticas e desenvolver projetos para mitigá-los. Seguindo essa lógica, foi elaborada a análise de adversidade climática do oeste paulista e do norte do Paraná. Para a efetuação dessa tarefa, foi utilizada a técnica de análise rítmica de Monteiro, sendo pesquisados os anos de 1997, 1998 e 2001 nas localidades de Presidente Prudente, Maringá e Londrina. Além da pesquisa dos dados diários desses três anos, em que foram criados 108 gráficos de análise rítmica e 108 gráficos de eventos climáticos, foram analisados 27 anos de dados mensais e anuais (1976- 2003) que possibilitaram a elaboração de 54 figuras, 67 tabelas, 102 gráficos e 9 organogramas, em que foram analisadas as características atmosféricas regionais, observando possíveis tendências de alterações climáticas futuras. Foram constatados, ao longo da análise, que a área de estudo está passando por um processo de aquecimento de até 1ºC, além de um processo de fortalecimento sazonal, com as estações mais secas e chuvosas tornando-se mais bem definidas, o que pode causar, futuramente, uma maior quantidade de eventos extremos e adversidades climáticas, que, por sua vez, podem afetar as cidades e a produção agrícola. / Analyzing how the atmospheric mechanisms act is a great base of the climate science because it allows the researches to know about the regional weather aspects, to discuss the possible impact of climatic variations and to develop projects in order to protect the region against these possible variations in the soon future. Following this idea, we elaborated an analysis about hazards in the Western Sao Paolo State and the North Parana State in Brazil. We based on the Monteiro rhythm analysis method to study the cities Presidente Prudente, Maringa and Londrina in the years 1997, 1998 and 2001. Through the search of diary weather statistics we created 108 rhythm analysis graphics and 108 climatic event graphics. Besides them, we studied 27 years of mensal and annual statistics (1976 - 2003) which allowed the creation of 54 figures, 67 tables, 102 graphics and 9 examples. Through these we analyzed regional climatic aspects, searching for future tendencies of climate variations. It was verified by the analysis a warming of one Celsius degree at the studied areas and also a process of sazonalization which showed more clearly the division of wet and dry seasons. We see that it could result in the future more cases of hazards that could affect the cities and the agricultural production. The thesis revels that the climatic rhythms study, the interpretation of regional climatic variation and the study of the necessary actions to protect the areas against hazards are complex questions which involve great series of variables that, sometimes, the statistical techniques are not able to solve, despite its powerful and recognition in science. Because of that, it is extremely important the careful interpretation of climatic aspects by rhythm paradigm, mainly linking it with statistical techniques as well. / Doutor
4

Variabilidade pluviométrica e a dinâmica atmosférica na bacia hidrográfica do rio Ivaí-PR

Baldo, Maria Cleide [UNESP] 25 April 2006 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:31:27Z (GMT). No. of bitstreams: 0 Previous issue date: 2006-04-25Bitstream added on 2014-06-13T20:22:11Z : No. of bitstreams: 1 baldo_mc_dr_prud.pdf: 5937302 bytes, checksum: fa59fda4cf03f83eefd28617ad952776 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Esta pesquisa objetivou analisar a dinâmica climática e a variabilidade pluviométrica para a determinação do padrão de precipitação predominante em diferentes escalas de análise e estabelecer a atuação dos sistemas atmosféricos e sua participação na geração de chuvas através da metodologia de análise rítmica proposta por Monteiro (1971). A bacia do rio Ivaí ocupa uma área de 35.845km2, sendo a segunda maior no território paranaense. Na primeira etapa do trabalho foi realizada a caracterização da pluviosidade através dos dados pluviométricos de 60 postos no período de 1976 a 2001. Foram calculadas as médias mensais, sazonais e anuais e os totais anuais para toda série histórica. Para alguns anos considerados atípicos (secos e chuvosos) foram calculados os desvios-padrão em relação à média. A segunda etapa do trabalho consistiu na aplicação da análise rítmica para os anos eleitos como padrão - 1998 (chuvoso), 1999 (seco) e 2001 (habitual) para Guarapuava e Maringá. Como resultado, constatou-se que a distribuição espacial da pluviosidade, para todas as escalas de análise, apresentou um padrão com os valores mais elevados a montante, devido ao efeito orográfico e ao clima subtropical predominante nessa porção, enquanto os menores valores foram observados a jusante, por estar ela numa área de clima tropical e baixas altitudes. No que se refere à análise rítmica, foi constatado, no ano de 1998, que os maiores valores precipitados sob atuação dos sistemas frontais ocorreram no outono para Guarapuava e no inverno para Maringá, e que somente a frente polar atlântica gerou 57% da pluviosidade para cada localidade em relação ao total anual. Para o ano de 1999 os sistemas frontais geraram valores pluviométricos semelhantes tanto no verão quanto na primavera, para Guarapuava e Maringá... / This research analyzes both the climate dynamics and the rainfall variability. It is aimed to determine the dominant rainfall pattern at different scales of analysis, to define the atmospheric systems and how they influence the rainfall generation. This research was performed according to the rhythm analysis methodology proposed by Monteiro (1971). The Ivaí River Basin drains an area of 35.845 kmø. It is the second largest river basin in the Paraná State. The first step of this research was to characterize rainfall regime based on 60 different rain gauge stations data, collected from 1976 to 2001. This basin monthly, seasonal, yearly averages and yearly totals were calculated based on its historic rainfall records. Atypical years (dry and rainy years) had their standard deviation calculated from mean values. During the second step of this research, rhythm analysis was performed for those years considered atypical - 1998 (rainy), 1999 (dry) and 2001 (typical) both for Guarapuava and Maringá. Each analysis scale showed that rainfall spatial distribution has a pattern of higher levels in the upstream basin. This is true because of the dominant subtropical climate and the orographic effects occurring in this area. Lower values occurred in the downstream basin because of the low altitude and its tropical climate. As far as rhythm analysis is concerned, it was evident that rainfall higher values under frontal systems occurred during the fall of 1998 in Guarapuava city and during the winter time in Maringá city, and also that the Atlantic polar front was responsible for 57% of rainfall measures for each locality in relation to the yearly total. In 1999, frontal systems values were similar in the summer and in the spring time, both in Guarapuava and in Maringá... (Complete abstract click electronic access below)
5

Variabilidade pluviométrica e a dinâmica atmosférica na bacia hidrográfica do rio Ivaí-PR /

Baldo, Maria Cleide. January 2006 (has links)
Orientador: João Lima Sant'Anna Neto / Banca: José Tadeu Tommaselli / Banca: Margarete Cristiane de Costa Trindade Amorim / Banca: José Bueno Conti / Banca: Luci H. Nunes / Resumo: Esta pesquisa objetivou analisar a dinâmica climática e a variabilidade pluviométrica para a determinação do padrão de precipitação predominante em diferentes escalas de análise e estabelecer a atuação dos sistemas atmosféricos e sua participação na geração de chuvas através da metodologia de análise rítmica proposta por Monteiro (1971). A bacia do rio Ivaí ocupa uma área de 35.845km2, sendo a segunda maior no território paranaense. Na primeira etapa do trabalho foi realizada a caracterização da pluviosidade através dos dados pluviométricos de 60 postos no período de 1976 a 2001. Foram calculadas as médias mensais, sazonais e anuais e os totais anuais para toda série histórica. Para alguns anos considerados atípicos (secos e chuvosos) foram calculados os desvios-padrão em relação à média. A segunda etapa do trabalho consistiu na aplicação da análise rítmica para os anos eleitos como "padrão" - 1998 (chuvoso), 1999 (seco) e 2001 (habitual) para Guarapuava e Maringá. Como resultado, constatou-se que a distribuição espacial da pluviosidade, para todas as escalas de análise, apresentou um padrão com os valores mais elevados a montante, devido ao efeito orográfico e ao clima subtropical predominante nessa porção, enquanto os menores valores foram observados a jusante, por estar ela numa área de clima tropical e baixas altitudes. No que se refere à análise rítmica, foi constatado, no ano de 1998, que os maiores valores precipitados sob atuação dos sistemas frontais ocorreram no outono para Guarapuava e no inverno para Maringá, e que somente a frente polar atlântica gerou 57% da pluviosidade para cada localidade em relação ao total anual. Para o ano de 1999 os sistemas frontais geraram valores pluviométricos semelhantes tanto no verão quanto na primavera, para Guarapuava e Maringá... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: This research analyzes both the climate dynamics and the rainfall variability. It is aimed to determine the dominant rainfall pattern at different scales of analysis, to define the atmospheric systems and how they influence the rainfall generation. This research was performed according to the rhythm analysis methodology proposed by Monteiro (1971). The Ivaí River Basin drains an area of 35.845 kmø. It is the second largest river basin in the Paraná State. The first step of this research was to characterize rainfall regime based on 60 different rain gauge stations data, collected from 1976 to 2001. This basin monthly, seasonal, yearly averages and yearly totals were calculated based on its historic rainfall records. Atypical years (dry and rainy years) had their standard deviation calculated from mean values. During the second step of this research, rhythm analysis was performed for those years considered "atypical" - 1998 (rainy), 1999 (dry) and 2001 (typical) both for Guarapuava and Maringá. Each analysis scale showed that rainfall spatial distribution has a pattern of higher levels in the upstream basin. This is true because of the dominant subtropical climate and the orographic effects occurring in this area. Lower values occurred in the downstream basin because of the low altitude and its tropical climate. As far as rhythm analysis is concerned, it was evident that rainfall higher values under frontal systems occurred during the fall of 1998 in Guarapuava city and during the winter time in Maringá city, and also that the Atlantic polar front was responsible for 57% of rainfall measures for each locality in relation to the yearly total. In 1999, frontal systems values were similar in the summer and in the spring time, both in Guarapuava and in Maringá... (Complete abstract click electronic access below) / Doutor
6

Détection, localisation, caractérisation de transitoires acoustiques sous-marins / Detection, localization, characterization of underwater acoustic transients.

Le Bot, Olivier 09 October 2014 (has links)
Le milieu marin est insonifié par une grand variété de sources acoustiques, qui peuventêtre monitorées par des enregistreurs acoustiques passifs autonomes. Parmi les sons enregistrés, ontrouve un grand nombre de signaux transitoires (signaux éphémères de durée courte), auxquelsappartiennent notamment les signaux impulsionnels que nous étudions dans cette thèse. Les signauximpulsionnels ont des propriétés spécifiques, telles que leur durée très courte (<1ms), leur faiblenombre d’oscillations, leur forte directivité, qui les rendent difficiles à étudier avec les outils detraitement du signal traditionnels (transformée de Fourier, autocorrélation, etc.).Dans un premier temps, nous nous intéressons à la détection des sources qui émettent des sériesd’impulsions rythmées (dauphins, cachalots, bélugas). Cette détection, s’appuie uniquement surles temps d’arrivée des impulsions reçues, pour effectuer une analyse du rythme au moyen d’uneautocorrélation complexe, et construire une représentation temps-rythme, permettant : i) de détecterles rythmes, ii) de connaître les temps de début et fin des émissions rythmées, iii) de connaître lavaleur du rythme et son évolution.Dans un second temps, nous étudions le potentiel d’une technique appelée analyse par récurrence desphases, pour caractériser les formes d’onde des impulsions. Après avoir présenté le cadre général decette méthode d’analyse, nous l’utilisons dans trois chaînes de traitement répondant à chacune destâches suivantes : i) détection des transitoires, ii) caractérisation et reconnaissance des transitoires,iii) estimation des différences des temps d’arrivée des transitoires sur deux capteurs.Toutes les méthodes développées dans cette étude ont été testées et validées sur des données simuléeset sur des données réelles acquises en mer / The underwater environment is insonified by a wide variety of acoustic sourcesthat can be monitored by autonomous passive acoustic recorders. A large number of the recordedsounds are transient signals (short-finite duration signals), among which the pulse signals that westudy in this thesis. Pulse signals have specific properties, such as a very short duration (<1ms), fewoscillations, a high directivity, which make them difficult to study by classical signal processing tools(Fourier transform, autocorrelation).In the first part of this study, we develop a method to detect sound sources emitting rhythmic pulsetrains (dolphins, sperm whales, beluga whales). This detector uses only the time of arrival of pulses atthe hydrophone to perform a rhythm analysis based on a complex autocorrelation and a time-rhythmrepresentation. This allows : i) to detect rhythmic pulse trains, ii) to know the beginning and endingtimes of pulse trains, iii) to know the value of the rhythm.In the second part of this thesis, we study the potential of a method called Recurrence Plot Analysis tocharacterize waveforms of pulse signals. After a general presentation of this method we develop threesignal processing architectures based on it, to perform the following tasks : i) transient detection, ii)transient characterization and pattern recognition, iii) estimation of time difference of arrival of thetransient on two hydrophones.All the methods developped in this thesis are validated on simulated and real data recorded at sea.
7

Jak vypadá neviditelné město / What does an invisible city look like

Gavriněvová, Kristýna January 2012 (has links)
The subject of this thesis entitled What does an invisible city look like is the perception of a city and the way it is represented. The work is based on urban semiotics that sees urban environment as a particular system of communication. The methods of sensory urbanism and rhythm analysis are employed as well. The author asks whether the cities could be represented by other than visual symbols as it is usually the case for the products of tourism industry (guidebooks, souvenirs, etc.). Usually, the symbol of a particular city is formed by the image of its skyline. In Prague, this is the skyline of the Prague Castle, in Paris, it is the Eiffel tower, in New York, it is the Statue of Liberty, etc. But every city has definitely many other qualities. What are they? To find the answer, the author asks for help the visually impaired people. These people can tell easily what are the non-visual qualities of the urban space as they experience them necessarily in their everyday life and use them for better orientation. The author interviewed the visually impaired people and she also observed the way they read the city in real. The practical part of the thesis focuses on the Prague city centre.

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