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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.
51

Trail Impacts on Movement in Wildlife Corridors: A Cleveland Metroparks Case Study

Escalambre, Michelle 10 July 2020 (has links)
No description available.
52

HELICOPTER BORNE TELEMETRY DATA ACQUISITION SYSTEM FOR DOWN RANGE APPLICATIONS

Varaprasad, K. S., Murthy, K. S. R. 10 1900 (has links)
ITC/USA 2005 Conference Proceedings / The Forty-First Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2005 / Riviera Hotel & Convention Center, Las Vegas, Nevada / The terminal phase telemetry data acquisition has always been a challenging task especially for long and medium range test launches. The task becomes more complicated if the article under test describes a very low altitude cruise terminal phase trajectory. Generally, for long and medium range missions test fired into sea the terminal phase data is acquired by deploying instrumented ships in the vicinity of impact point but beyond the safety corridor. But for long range missions with low altitude cruise terminal phase trajectory and wide safety corridor this conventional approach will not work out because of limitation of LOS from the ship platforms. Hence, for such applications an air borne telemetry receiving system is also to be added to the down range instrumentation network. This paper describes a typical and cost effective air borne system realized utilizing the Commercial Off The Shelf (COTS) products and technology. This paper also addresses as to how the signal scattering problems are tackled in the design implementation.
53

Political regionalisation and oil production in Africa: the case of the LAPSSET Corridor

Lund, Svein Sørlie 04 1900 (has links)
Thesis (MA)--Stellenbosch University, 2015. / ENGLISH ABSTRACT: This study analyses regionalism in Africa from a theoretical and an applied perspective. The purpose of the study is to contribute to the critical and reflectivist corpus of theories of regionalism. This field is dominated by rationalist theories that are largely preoccupied with formal inter-­‐state and market-­‐driven processes of regional integration. The rationalist theoretical hegemony in academia and politics serves to reinforce and reproduce neoliberal ideology informing global political economic practices. This study illustrates the limitations and normative assumptions of these orthodox frames and demonstrates the multidimensionality of regionalisation. The study applies a combination of three critical reflectivist theories: the World Order Approach, the New Regionalism Approach and the New Regionalisms Approach/Weave-­‐ world in an analysis of an ongoing regional oil and infrastructure project in East Africa called the Lamu Port, South Sudan and Ethiopia (LAPSSET) Corridor. The study’s primary research question investigates the extent to which oil production is driving the manifestation of (new) regionalism in East Africa, especially in terms of the LAPSSET Corridor, with secondary questions identifying the actors involved in this regionalisation, and what the theoretical framework reveals about the regionalisation in East Africa. After a review of some of the most influential theoretical contributions to the study of regions a critical reflectivist approach is suggested as an alternative to conventional rationalist theories. A broad historical overview of the East African region is elaborated with a focus on Uganda and Kenya, highlighting the social, cultural, political and economic evolution of the region before reflection on how forces of production relate to regime type in East Africa. Subsequently, a case study establishes an assessment of the historical and social construction of the LAPSSET Corridor. The objectives of the LAPSSET Corridor and its implementation mechanisms are scrutinised and viewed in comparison with its potential for inclusiveness of local participation and sustainable socio-­‐economic development. Two important conclusions can be drawn from this study. The first is that oil production is critical in the current regionalisation in East Africa. However, the nature of this regionalisation flows contrary to other regional motives. The second conclusion is that the anti-­‐reductionist and critical reflectivist approach is indeed essential to fully understand the variety of multi-­‐level factors of structures and agency that influence regionalism and regionalisation in East Africa. / AFRIKAANSE OPSOMMING: Hierdie studie analiseer regionalisme in Afrika vanaf ‘n teoretiese en ‘n toegepaste perspektief. Die doel van die studie is om by te dra tot die kritiese en reflektiwistiese liggaam van teorie oor regionalisme. Hierdie studieveld word gedomineer deur rasionalistiese teorieë wat meerendeels besig is met formele inter-­‐staat en markgedrewe prosesse van regionale integrasie. Die rasionele teoretiese hegemonie in akademia en politiek versterk en herproduseer sodanig neoliberale ideologie wat global politiek-­‐ekonomiese praktyk bepaal. Hierdie studie wys die beperkinge en normatiewe aannames van hierdie ortodokse beskouings uit, en ontbloot die multidimensionaliteit van regionalisering. Die studie pas ‘n mengsel van krities-­‐reflektivistiese teorieë toe: die Wêreldorde Benadering, die Nuwe Regionalisme Benadering, en die “Verweefde Wêreld” Benadering in ‘n analise van die regionale olie en infrastruktuurprojek in Oos-­‐ Afrika wat die “Lamu Port, South Sudan and Ehtiopia” (LAPSSET) Korridor genoem word. Die studie se primêre navorsingsvraag fokus op die mate waartoe olieproduksie die manifestering van (nuwe) regionalisme in Oos-­‐Afrika dryf, veral in terme van die LAPSSET Korridor, met sekondêre vrae om die akteurs te identifiseer wat betrokke is by hierdie regionalisering, en wat die teoretiese benadering blootlê aangaande die regionalisering in Oos-­‐Afrika. Na ‘n oorsig van die belangrikste teoretiese bydraes tot die studie van streke word ‘n krities-­‐reflekiwistiese benadering voorgestel as ‘n alternatief vir konvensionele rasionele teorieë. ‘n Breë historiese oorsig van die Oos-­‐Afrika streek word verskaf, met ‘n fokus op Uganda en Kenia, en dit beklemtoon die sosiale, kulturele, politieke en ekonomiese ontwikkeling van die streek voordat ‘n oordenking van hoe die magte van produksie betrekking het op regimetipe in Oos-­‐Afrika. Voorts verskaf die gevallestudie ‘n oorsig van die historiese en sosiale daarstel van die LAPSSET Korridor. Die doelwitte van die LAPSSET Korridor en sy implementeringsmeganismes word geëvalueer en beskou in vergelyking met sy potensiaal vir die insluiting van plaaslike deelname en volhoubare sosio-­‐ekonomiese ontwikkeling. Die studie maak twee belangrike gevolgtrekkings moontlik. Die eerste is dat olieproduksie krities belangrik is in die huidige regionalisering in Oos-­‐Afrika. Maar tog is die aard van die regionaliseringspatrone teenstrydig met ander streeksmotiverings. Die tweede gevolgtreking is dat die teen-­‐reduksionistiese en krities-­‐reflektiwistiese benaderings wel sentraal staan tot ‘n volle beskouing van die verskeidenheid van veelvlakkige faktore wat regionalisme en regionalisering in Oos-­‐Afrika beïnvloed.
54

A Survays On Fading Channel Over West - Java Area for Flight Test Radio Telemetering Purposes

Soelaiman, Adi Dharma, Pudjiastuti, Rina 10 1900 (has links)
International Telemetering Conference Proceedings / October 17-20, 1988 / Riviera Hotel, Las Vegas, Nevada / This paper discusses one approach to determine a characteristic of West - Java's air and ground segment as a block-box to accomodate radio waves propagation, especially in L-band ranges, by evaluating both the topographical data and radio reception pattern as measured from ground based telemetry receiving-end system. All the measured signals are random and assumed to be stationair and ergodic. In order to characterize the channel for polarization diversity reception, some statistical analysis are applied to the signal strength measured of both - RHCP and LHCP components of 1531 MHz propagated waves as transmitted fr om NC212-200 PK-NZJ-aircraft. Some computer calculated correlograms of measured data are shown herewith, it is focused for a certain radio corridor at radial 265E relative to the ground based receiving antenna. More over some curves of predicted multipath gain factor are also presented to gain more theoretical back ground. When this paper is written, a further field experiments on the matter concerned is beeing conducted.
55

Building an integrated transport system in Northeast Asia : a Delphi study

Zhou, Tianlan January 2011 (has links)
In the current international environment characterized by globalization and regionalization, the importance of the transport and logistics system integration which is the basis of regional economic cooperation has been highlighted. Northeast Asian Region which covers 5.7% of the total world’s area and has around 25.8% of the total world’s population has been one of the most active regions of economic and social development in recent two decades largely due to the emergence of China and Russia in the world market. However, different from the EU which provides an excellent example of economic and transport integration, the transport and logistics system in Northeast Asia still has massive room for improvement. The concept of transportation corridor construction has been adopted in the research and the five most important international transportation corridors in Northeast Asia have been fully examined in terms of current situation and major problems and issues. The major issues include inadequate and imbalanced transportation infrastructure, lack of funding as well as insufficient institutional mechanisms. Consequently, the policy and action plans in four sectors are formulated to improve the performance of the transport and logistics system in Northeast Asia. The current research was facilitated by experts mainly from the transport and logistics field in Northeast Asia, through the application of the Delphi Method. The consensus achieved will provide useful guidance for building a well integrated transport and logistics system in Northeast Asia. The political and economic stability of North Korea is a prerequisite for transport and logistics system construction in Northeast Asia. Furthermore, improving basic transport infrastructure, promoting logistics and transport facilities, building a logistics cooperation system and training logistics specialists are the four most important aspects for the development of the transport and logistics system in the region.
56

Using Aqueous Soil Extracts to Study Organic Matter Leaching From Soils of Different River Corridor Land Covers in Vermont

Hampsch, Alyson 01 January 2016 (has links)
Soils represent an important terrestrial carbon (C) sink, storing up to three times the amount of atmospheric C, however climate and land use changes may transform soils into C sources. River corridor (RC) soils and associated C are at risk to become mobilized by erosion such as bank failure and scour events. Once soil-derived organic C is transferred into the stream, microbial processes and photodegradation of the dissolved, labile (or bioavailable) fractions can lead to the production of CO2, which can evade and increase atmospheric CO2 levels. Because predicted increases in heavy precipitation will likely increase this type of riverine erosion, it is important to better understand the potential for the release of bioavailable C from RCs. One objective of this thesis was therefore to identify and characterize representative samples of soils from a typical Vermont RC for common land covers and simulate the production of dissolved organic matter (DOM) during riverine soil erosion. Field sites representative of typical agricultural and forested land uses were selected based on the analysis of 106 existing samples and resampled multiple times over the summer of 2015. Production of DOM from riverine erosion was simulated using aqueous soil extracts (ASE), where soil and water were shaken at fixed ratios followed by the separation of the extract. To study the characteristics of these extracts (which serve as analogue of stream water after erosion), water extractable C (WEOC) concentrations, water extractable nitrogen, fluorescence properties of DOM, and bioavailability were determined. Results indicated a common, dominantly terrestrial source material for all land covers, but C concentrations and fluorescence properties differed. High but variable amounts of soil organic C and WEOC were observed in agricultural riparian and agricultural stream bank samples, and lower concentrations in agricultural field, forest, forest riparian, and forest stream banks. WEOC bioavailability was high in all agricultural land covers and low in forested land covers. Because this study is the first in which ASE are used as analogues for stream water after riverine erosion, a second objective was to test laboratory methods used in this study for their effect on WEOC, fluorescence properties, and bioavailability. Specifically, the effects of soil drying, soil storage, and the effects of the extraction solution were tested. For this, ASE were prepared from soils that were field moist, dried, and after two years of storage. In addition, dried soils were extracted using different solutions including a salt solution, river water, and double deionized (DDI) water. Results indicated WEOC concentration and microbial humic-like fluorescence from extracts of dried soils were higher than those in extracts of field moist soils, while WEOC concentration and microbial humic-like fluorescence was highest in extracts of soils stored long term. In addition, the bioavailability of WEOC was higher in dried soils than field moist soils. The extraction solutions of DDI water and river water produced DOM with similar fluorescence properties, while the salt solution extracted a different, less humified pool of C. Overall, the ASE methods used in this study are effective in simulating stream bank erosion and subsequent C release into stream water, however the effects of drying the soils need to be considered when assessing DOM.
57

The unexpected in unlikely spaces: an experience along the Rock Island corridor

Demos, Laura January 1900 (has links)
Master of Landscape Architecture / Department of Landscape Architecture/Regional and Community Planning / Blake Belanger / Metropolitan Kansas City is a growing area, and the communities are considering new transportation options including a fixed guideway system. The addition of a fixed guideway system is often seen as controversial to people of the communities it affects, and many will not be in favor of it. Rail lines are great option for transportation because they are designed for the efficiency of getting people from place to place. However, they typically do not offer much of a visual experience to commuters. Making the transportation corridor more than just a transportation corridor through interactive, art installations will open people up to the idea of a fixed guideway system, provide trail users with destinations, and provide commuters with something interesting to look at creating a vibrant, visual experience. The RIC will become a place of destinations, recreation, vibrancy, sustainable features, and visual stimulants through the connection of the rail line, MetroGreen trails, installations, and the RIC communities. Locating literature related to the commuter rail, visual design, experience, aesthetics, and sustainability helped to determine how these elements fit into this project. Conducting precedent studies helped set guidelines for the design of installations. A process of using certain specifications in ArcGIS determined general suitability for installations resulting in twenty-eight identified sites. The development of a basic design framework through a set of matrices involving installation attributes and site conditions helped to determine site suitability for specific types of installations, which allowed me to develop a design specific to the site conditions taking the number of suitable sites down to twenty-one. Each site has a set of parameters specific to each installation. Some sites are fully designed and developed, while others are to be commissioned out to artists for design and development. This set of proposals presents a vision of the RIC as a place of destinations, recreation, vibrancy, sustainable features, and visual stimulants through the connection of the rail line, MetroGreen trails, installations, and the RIC communities. The transformation of the corridor through art installations enhances people’s experience of the corridor, promotes both the rail line and the MetroGreen trails, connects people to the corridor, and encourages sustainability.
58

Mapeamento de áreas de pressão à ocupação irregular da faixa de passagem: o caso da linha Anhanguera-Guarulhos / Mapping pressure areas with a tendency of illegal occupation in the line transmission corridors: the case of Anhanguera-Guarulhos line transmission

Souto, Janio Queiroz 22 February 2017 (has links)
As linhas de transmissão no Brasil formam uma imensa rede de transporte de energia elétrica denominada SIN (Sistema Interligado Nacional). Ao longo das áreas próximas às linhas existem corredores denominados faixa de passagem. Devido à alta tensão dos cabos energizados e aos riscos para a população e para o sistema, essas áreas têm restrições de uso. Contudo, sabe-se que, frequentemente, são registradas ocorrências de ocupações ilegais. O presente trabalho discute a questão das ocupações irregulares nas faixas de passagens das linhas de transmissão de energia elétrica em áreas urbanas no Brasil. Isto porque as variáveis que influenciam para ocorrência da infração estão localizadas preferencialmente nas cidades. A análise está focada nos fatores presentes nas adjacências das faixas de passagens. Foram identificadas três características propulsoras do descumprimento da regra: a tipologia do uso do solo, a associação das condições socioeconômicas e a densidade demográfica nas imediações dessas faixas. O estudo baseia-se nessas variáveis e faz uso das técnicas do geoprocessamento para a realização de uma série de tarefas necessárias para a execução do trabalho, como mapeamento do uso do solo, geração de buffer análise e produção de overlays. Os recursos das análises de agrupamento foram o meio usado para sintetizar os dados referentes à população, à renda e à escolaridade. O modelo desenvolvido foi aplicado e testado nos arredores da Linha de Transmissão 345 kV - Anhanguera-Guarulhos, situada na zona norte da cidade de São Paulo e que perpassa por áreas com diversos tipos de urbanização, diferentes níveis de renda, variadas classes sociais e muitos tipos de uso e ocupação do solo. / The Electric Power Transmission Lines in Brazil form an immense network of electricity transportation named the National Interconnected System (SIN). Along the nearby areas of the lines transmissions, there is a zone called line transmissions corridor. Due to the high-voltage of the power cables and the risks to the population and to the system, these areas have restrictions of use. However, it is known that illegal occurrences are frequently registered. The present work discusses the matter of irregular occupations in the line transmission corridors of the electric power transmission lines in urban areas in Brazil. It is because of the fact that the variables that influence this type of infringement are exceedingly present in cities. The focus of the analysis is on factors found in the vicinities of the lines transmission corridors. Three propelling characteristics of the rules non-compliance were identified: the soil use type, the association of socioeconomic conditions and the demographic density of the surrounding area. The study is based on these factors and uses geoprocessing techniques to perform a series of tasks required for the execution of this work, such as mapping the land use, generating the buffer analysis and producing the overlay analysis. The resources of the cluster analysis were used to synthesize data referring to the population, income and education. The developed model was applied and tested in the surroundings of the 345kV electric line transmission Anhanguera-Guarulhos, located in the northern part of the city of São Paulo, passing through areas with different types of urbanization, different income levels, various social classes and many types of land use.
59

Corridors de demande : Modélisation et contributions à l’évaluation du niveau de durabilité / Demand corridors : Modeling approach and contributions in supply sustainability level assessment

Bahbouh, Kinan 02 December 2016 (has links)
L’utilisation du concept de corridor dans le domaine du transport n’est pas nouvelle. En effet, il existe une importante littérature qui étudie le corridor en tant que produit économique et politique issu du développement urbain notamment associé à la présence de services et d’infrastructures de transport. Cependant, l’utilisation de ce concept plurivoque dans la planification et l’évaluation de l’offre au niveau urbain demeure encore limitée, compte tenu de l’absence d’une définition claire et d’une approche de modélisation adaptée à la nature des déplacements, très dispersés, dans l’aire urbaine. Cette thèse contribue à la modélisation des corridors de déplacement en milieu urbain et au diagnostic de l’offre associée. Dans cette optique, la thèse offre une réflexion approfondie sur la définition et les caractéristiques d’un corridor de transport et propose un cadre de modélisation dont l’identification repose sur la demande. Les corridors de demande qui en émergent sont par la suite utilisés en tant qu’unités de référence à l’échelle collective, ce qui permet d’évaluer l’éloignement entre la demande et l’offre d’un corridor. La thèse définie le corridor comme l'enveloppe qui encapsule une forte concentration de trajectoires similaires. Ainsi, elle propose un algorithme, appelé Trajectory Clustering for Desire Line (TraClus-DL), pour identifier les corridors à partir des données origine-destination (OD) désagrégées (lignes de désir). Par la suite, la thèse distingue trois types de corridor de demande et illustre leurs potentiels dans les processus de planification. La thèse propose un cadre d’évaluation du niveau de durabilité de l’offre reposant sur le concept de corridors de demande. De plus, elle évalue les différentes facettes de la structure spatiale de l’offre en utilisant ce cadre. Les résultats obtenus par l’étude des corridors de demande permettent d’avoir une réflexion plus profonde face au concept des corridors et leur rôle dans les processus de planification. Le potentiel de synthétiser une grande matrice OD en illustrant les principaux flux de mobilité offre aux planificateurs un outil « neutre » de visualisation distant de l’offre et des découpages administratifs ou opérationnels. Les mêmes résultats permettent de tracer les axes denses de mobilité ce qui facilite l’identification des potentiels d’amélioration ou la désignation et la planification de l’offre. Enfin, la demande et l’offre sont inséparables. La combinaison entre les deux visions permet de couvrir un angle plus large qu’une étude basée uniquement sur la demande ou sur l’offre. Le but ultime de cette thèse est d’explorer le concept et les limites d’une approche basée sur la demande brute uniquement pour mieux comprendre la mobilité. Cette compréhension amène à identifier les besoins et les potentiels d’amélioration selon une perspective distante de tous les obstacles et les limites préconçues au niveau opérationnel, technique et politique. / Many researchers have benefited from the concept of the transport corridor to cover mobility issues. However, the use of the concept of the transport corridor in the urban transportation assessment and planning process remains limited due to the lack of a clear definition and modeling approach adapted to the very scattered nature of travel in urban areas. This thesis provides a deep reflection on the transport corridor’s definition and characteristics and offers a modeling framework to identify urban transportation corridors using the transport demand, represented by the Origin and Destination (OD), in the absence of supply elements. In addition, the thesis provides new insights into the possible ways that demand corridors can be seen and used to understand mobility patterns so to assess, plan, and improve the transportation supply. Furthermore, it proposes a global framework and constructs some indicators that incorporate demand corridor as a “fair” comparison unit, to assess the adequacy of transportation supply with respect to the demand. The first main chapter proposes define corridor as the envelope that encapsulate a high concentration of similar trajectories. Then, it defines demand corridors using demand elements such as origin destination data. The second chapter proposes an algorithm called Trajectory Clustering for Desire Line (TraClus-DL) to identify demand corridors. The followed chapter defines three types of demand corridors and highlights their potential use in transportation planning. The next chapter proposes a framework to assess the supply sustainability level by benefiting from the demand corridor as a reference unit. Work in the following chapter benefits from the framework and provides new insights into the possible ways of assessing the spatial characteristics of the supply structure. The results obtained by studying the demand corridors allow a deep reflection on the concept of corridors and their role in transportation assessment and planning. In addition, to synthesizing and visualizing OD matrixes, demand corridors trace the shape of dense mobility axes and appear as relevant tools for transportation planning, and in the decision-making processes in which an indicator is needed to evaluate the current or planned supply. The use of the demand corridor as a reference unit reflects the collective demand standpoint and offers the possibility to rank supplies based on each supply's level of compliance to the demand flow. Finally, the demand and the supply are inseparable. The combination of the demand corridor studies and the supply corridor studies covers a wider angle than studying the demand or the supply. The ultimate goal of this thesis is to explore the concept and limits of an approach based on the unprocessed demand to better understand the mobility. This understanding leads to identify the needs of potential improvements in the absence of preconceived operational, technical, or political limitations.
60

L'axe Dakar-Touba (Sénégal) : analyse spatiale d'un corridor urbain émergent

Thiam, Ousmane 28 March 2008 (has links) (PDF)
L'urbanisation dans les pays en développement suscite depuis quelques années de nouvelles interrogations. Plus que jamais, ses mécanismes comme ses logiques de production se sont complexifiés au point de remettre en cause des idées reçues et obliger à refonder le questionnement sur l'urbain sur de nouvelles bases. Autour des grandes agglomérations surtout, l'attention est de plus en plus attirée par les transformations spatiales qui s'y opèrent et à travers lesquelles s'esquissent de nouveaux rapports entre villes et espaces environnants. <br />Au Sénégal, les schémas de la production urbaine ont, à l'instar de ce qui se passe dans la plupart des pays de l'Afrique côtière, constamment évolué ces deux dernières décennies. S'inscrivant de plus en plus dans une logique de développement axial, la dynamique urbaine s'apprécie désormais à l'échelle locale à deux niveaux : le niveau urbain et le niveau périurbain. La dynamique de ce dernier est mécaniquement liée à celle du premier. Cependant, la situation est spatialement très différenciée. C'est surtout dans la partie ouest-centrale du pays et dans l'axe Dakar-Touba plus particulièrement que l'on observe les nouvelles dynamiques urbaines les plus importantes. Les évolutions observées autour des agglomérations de cet axe posent beaucoup de questions. L'une d'elles concerne la capacité des évolutions en cours à influer durablement sur la dynamique du système urbain sénégalais. L'objectif principal de ce travail est d'identifier les dynamiques nouvelles qui marquent une rupture dans la configuration et le fonctionnement du système urbain traditionnel particulièrement influencé par la macrocéphalie dakaroise. Si elle se confirme, cette nouvelle configuration constituera une alternative à la suprématie urbaine de Dakar et de son agglomération.

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