Thesis (M.S.)--Ohio University, June, 2005. / Includes bibliographical references (p. 33-37)

Thesis (M.S.)--Ohio University, June, 2005. / Title from PDF t.p. Includes bibliographical references (p. 33-37)

En se basant sur l’approche des corridors de transport de fret, cette thèse se propose d’étudier les impacts différenciés des politiques d’infrastructures de transport et de télécommunication sur la spécialisation régionale et, par conséquent, sur le développement polycentrique et durable de l’espace européen. Ce faisant, un premier modèle théorique mixte de la NouvelleEconomie Géographique et de l’économie urbaine a été développé. Il montre d’un côté que le commerce interrégional dépend de la taille et des structures internes des zones urbaines ; d’un autre côté, il souligne le fait que l’intégration régionale influence la taille, les structures de ces zones et, par conséquent, leur spécialisation régionale. Ensuite, un deuxième modèle théorique de la Nouvelle Economie Géographique est développé pour étudier les impacts des politiques d’infrastructures de transport et de télécommunication sur la spécialisation régionale. On montre cependant que le secteur technologique joue un rôle essentiel dans la répartition spatiale des activités industrielles et, par conséquent, dans le développement polycentrique de l’espace européen. Enfin, un modèle économétrique basé sur la problématique de couplage est mobilisé pour tester la relation entre la demande de transport maritime international de marchandises et la croissance économique. On souligne ainsi le fait qu’une approche par corridors peut être un outil de découplage, en permettant un système de transport efficace et durable dans la région euro-méditerranéenne. / Based on the freight corridors approach, in this thesis we explore differentiated impacts of transport and telecommunication infrastructure policy on regional specialization and consequently on polycentric and sustainable development of the European area. Within this framework the first mixed theoretical model of New Economic Geography and urban economics was developed. On the one hand it shows that interregional trade depends on the size and internal structure of urban zones; on the other hand it emphasizes that regional integration influences the size and structure of these zones and, as a result, their regionalspecialization. Then the second theoretical model of the New Economic Geography is developed to study the impact of transport and telecommunication infrastructure policy on regional specialization. We demonstrate, however, that technological sector plays an essential role in the spatial distribution of industrial activities, and consequently in the polycentric development of the European space. Finally, an econometric model based on the problem of coupling is applied to test the relation between the demand for international maritime transport and economic growth. Thus it is emphasized that the approach of corridors may beused as an instrument of decoupling, allowing to develop an efficient and sustainable transport system in the Euro-Mediterranean region.

At most of the US signal, pedestrian walk timings run in concurrence with relevant vehicular traffic signal phases which means that major-street coordinated operations can be interrupted by a pedestrian call. Such interruption may increase delays and stops for major traffic flows. An alternative to this design is to increase the cycle length and embed pedestrian timings within the ring-barrier structure of the prevailing coordination plan. Both approaches have advantages and disadvantages. This study attempts a novel approach to address this situation by a comprehensive experimental evaluation of traffic performance under various pedestrian signal timing strategies. Findings show that either abovementioned approach works well for very low traffic demands. When the traffic demand increases findings cannot be generalized as they differ for major coordinated movements versus overall network performance. While coordinated movements prefer no interruption of the coordinated operations, the overall network performance is better in the other case. / Includes bibliography. / Thesis (M.S.)--Florida Atlantic University, 2018. / FAU Electronic Theses and Dissertations Collection

Graduation date: 1995

In the course of the European Commission’s aim at planning for economic territorial cohesion, an increased accessibility of the European regions and a strengthening of the regions’ competitiveness, focus have been drawn on the improvement of infrastructure for transport. This research deals with what can be seen as a pre-discourse in the front end of a planning process for a future transport corridor between the cities of Hamburg and Stockholm, during which the actors are positioning themselves. This is done by a qualitative analysis of selected policy documents from the national, regional and municipal level in Sweden, Denmark and Germany and the European commission. The results indicate that the actors involved interpret the concept of a transport corridor in various ways, since the policy documents that have been analysed for this research reveal possible inherent conflicts. The most considerable differences can be seen between the authorities on the national level on the one hand and the authorities on the regional and municipal level on the other. However, the location of a municipality or region does also influence their interpretation of a future transport corridor.

Thesis (M.S.C.E.)--University of Central Florida, 2009. / Adviser: Mohamed Abdel-Aty. Includes bibliographical references (p. 155-159).

Thesis (Ph.D.)--University of Oklahoma, 1998. / Includes bibliographical references (leaves 131-139).

Texas features a growing economy and population. The state boasts a large and well-developed network of roads, freight railroads, and air facilities, which make the state a vital link in the movement of people and goods. However, as the state continues to grow in population and economic significance, these systems are straining to meet state, national, and even global needs. It is increasingly obvious to residents and state officials that Texas should consider implementing alternative modes of transport, including development of passenger rail, for which Texas currently lags behind many of its peer states. Passenger rail provides quantifiable benefits in displacing less energy-efficient and higher pollutant-emitting air and automobile modes while generating potential positive economic impacts and enhancing consumer choice and multimodalism. Conveniently, renewed national interest in rail has invigorated research measuring the applicability of passenger rail services to many different regions of the United States, with the possibility that future national transportation visions will include passenger rail as an essential element. This thesis seeks to clarify the potential for passenger rail specifically in Texas through comparison and contrast with other regions and nations in the midst of new national-level knowledge and the changing transportation opportunities and challenges facing the state. Some of the ideal characteristics of successful international passenger systems exist in Texas, including optimal city spacing and a well-established rail network, which have fuelled ongoing interest demonstrated by various system proposals for high-speed intercity transportation in Texas over the last four decades. Despite these characteristics, the state presents a number of barriers to rail transport rooted in low transit use coupled with generally lower density and ambivalent support from politicians and residents when officials present realities of eminent domain and land use changes. However, with revitalized national rail interest and new federal rail planning requirements, the state may yet be able to work through these challenges to exploit the opportunities the state possesses. / text

Exotic plant species can be a serious threat to native ecosystems and the human economy. They have often been found to grow in greater abundance along roadsides, and seem to use them as corridors of invasion into the surrounding habitats. This study sought to determine whether there were any relationships between the distribution of exotic plant species and adjacency to roads in southern Illinois. To test this question, I conducted two research projects. For the first project, I ran transects from active and abandoned roadsides into adjacent forest interiors to collect data on the presence and abundance of exotic species. Along most roads, exotic species richness declined with increasing distance from the road. In most cases, abandoned roads were more likely than active roads to have a high abundance of Lonicera japonica and Rosa multiflora. For the second project, I collected geographical data for exotic species from field studies, herbaria records, and literature records, and compared them based on distance from the nearest road, family composition, and life form composition by both number of species and number of records. On average, herbaria records were farther from the road than field studies. Composition of families and variety of life forms were not significantly different when comparing by number of species, but were significantly different when comparing by number of records.