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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.
91

Analýza a řešení dopravy ve městě Litovel / Transport Analysis and Solutions in Litovel

Hrachovinová, Petra January 2020 (has links)
This diploma thesis focuses on the traffic situation in the town of Litovel in the Olomouc Region. Analysis of transport modes, especially road transport, cycling transport, parking and a proposal of their optimization, is the content of this thesis. The first part of the thesis describes the current traffic situation in the town of Litovel, the determination of traffic load according to the Nationwide Traffic Census and the degree of automation as per public databases operated by authorities of the state administration of the Czech Republic. Furthermore, the thesis deals with localities of frequent accident rates, the determination of their risks leading to traffic accidents, and it proposes measures to improve the comfort and safety of road users. In the chapters devoted to parking in various areas of the town, divided according to their functional use, the deficiencies of parking spots are discovered and subsequently their optimal solutions are elaborated. The last part of this thesis deals with cycle routes in the town, it searches for specific places with imperfections and the concept of their solution.
92

Studie distribuce ve vybraném podniku / The Study Logistics Supply in the Selected Company

Čumová, Šárka January 2015 (has links)
The thesis monitors the distribution logistics of company CommScope at the local and corporate level. The aim of this work is the optimization of the current state and the proposal to use the combined mode of transport for the largest customer in Europe. The theoretical part is focused on the current method of arranging transport and carrier choise. The practical part is a detailed analysis of the road transport from manufacturer to the customer and proposal for using an alternative mode of combined transporport is formulated.
93

Problematika odborné způsobilosti řidičů motorových vozidel k provozu na pozemních komunikacích ČR / The Issue of the Competence of Drivers of Motor Vehicles to Drive on the Roads of the Czech Republic

Chodurová, Zuzana Unknown Date (has links)
The theme of this master’s thesis is The Issue of the Competence of Drivers of Motor Vehicles to Drive on the Roads of the Czech Republic. It includes an analysis of the current state legislative requirements for obtaining professional qualifications of drivers in the Czech Republic and in neighboring states and comparison of selected specifics of the issue. An analysis was made of traffic accidents in the Czech Republic and comparison of basic indicators of accidents with neighboring states. Based on the analysis of the current state, then the practical part includes a questionnaire survey and suggestion of measures for improving road safety.
94

Geografické aspekty cenotvorby nákladní silniční dopravy / The geographical aspects of pricing in the field of freight road transport

Čermák, Jan January 2011 (has links)
The aim of this paper is to show what relation is between the distance and the transport price and which factors can contribute to the expected irregularity. Based on the real freight transport prices the paper is looking for and finding significant differences in the relative transport prices between chosen regions. It seems that the quality of the transport price is influenced by factors like the location of the target region within Europe and towards Czechia, within transportation routes and networks, its economic power and structure and possibly also by the mutual relations that the source and target regions have within the global supply chains. The quality of the transport connection between the regions is further compared with the connection that these regions have within the global city network. As was found out, these two kinds of connection do not have to necessarily be the same. A short questionnaire was taken among chosen transport experts to get the basis for a better interpretation of the paper's conclusions and also to get their opinion on the sense of the geographical research in the field of international transport and logistics. Keywords: international freight road transport, transport pricing, transport price, logistics, supply chains, geographical aspects of pricing
95

Impact of fuels and exhaust aftertreatment systems on the unregulated emissions from mopeds, light and heavy-duty vehicles non réglementées des scooters, voitures et camions / Influence du carburant et des systèmes de post-traitement des gaz d'échappement sur les émissions non réglementées des scooters, voitures et camions

Clairotte, Michaël 10 December 2012 (has links)
Le secteur du transport joue un rôle majeur dans le changement climatique et la pollution atmosphérique. Parmi les secteurs d'origine anthropique, le transport routier est considéré comme le premier contributeur au réchauffement climatique, due notamment aux émissions de CO2, de précurseurs d'ozone, et d'aérosols carbonés (carbone noir). De plus, les émissions liées au transport routier telles que les oxydes d'azote (NOx), l'ammoniac (NH3), les carbonyles volatiles, les hydrocarbures gazeux, et les aérosols, contribuent à la dégradation de la qualité de l'air.Le but de cette étude était d'approfondir l'état des connaissances en termes de facteurs d'émissions associés au transport, pour les polluants en phases gazeuse et solide. Un intérêt particulier a été apporté sur l'influence des systèmes de post-traitement des gaz d'échappement, et de la qualité du carburant, sur les émissions d'espèces réglementées et non-réglementées. Des campagnes de mesure ont été menées sur différentes catégories de véhicules dans le laboratoire d'étude des émissions (VELA) du centre commun de recherche de la commission Européenne (JRC-EC) à Ispra, en Italie. La flotte de véhicules choisie comprenait des camions (moyens et poids lourds), des voitures et des deux-roues formant un ensemble représentatif des véhicules circulant en Europe. En plus des carburants classiques, essence et diesel, les véhicules ont été alimentés avec des carburants alternatifs tels que le bioéthanol, et le gaz de pétrole liquéfié. Les émissions en phase gazeuse ont été mesurées par spectroscopie infra-rouge à transformé de Fourier (FT-IR; pour les composés azotés, les carbonyles volatiles et les petits hydrocarbures), par spectrométrie de masse à temps de vol après ionisation multi-photonique résonnante (REMPI-ToF-MS; pour les hydrocarbures aromatiques mono et polycycliques), par spectromètrie de masse haute résolution à temps de vol dédié à l'analyse des aérosols atmosphériques (HR-TOF-AMS; pour les aérosols organiques), et par photométrie d'absorption multi-angle (MAAP; pour le carbone élémentaire).Parmi les véhicules étudiés, les scooters ont été les plus gros émetteurs d'aérosols organiques primaires et d'hydrocarbures mono et polycycliques. De plus, le système de post-traitement des gaz d'échappement étudié pour le scooter le plus récent (conforme à la réglementation Euro 2) pourrait être responsable d'émissions importantes d'aérosols organiques. Concernant les voitures, et en particulier celles équipées de moteurs à allumage par étincelle, la plupart de leurs émissions intervenaient en début de cycle, avant que la température d'amorçage du pot catalytique soit atteinte. Ces émissions liées au démarrage à froid du véhicule pouvaient masquer les effets bénéfiques des carburants alternatifs en terme d'émissions de précurseurs d'ozone. Finalement, les camions étaient les plus gros émetteurs de suie (carbone élémentaire) et de NOx. Malgré le fait que plusieurs systèmes de retrofit se sont montrés particulièrement efficaces pour réduire les émissions des polluants réglementés (particules et NOx) de ces véhicules, certains d'entre eux produisaient des quantités significatives de NH3. Ce projet a permis de collecter des informations précieuses pour l'élaboration de la législation relative au développement d'un transport durable en Europe. / Transport sector plays a key role in global warming and air pollution. Among the anthropogenic sectors, on-road transport is recognized as the first contributor to global warming, mainly due to its emission of carbon dioxide, ozone precursors and carbonaceous aerosols. In addition, on-road transport contributes to the deterioration of air quality by releasing nitrogen oxides, ammonia, carbonyls, hydrocarbons and aerosols. However, the current European legislation of vehicles emissions focusses on a limited number of pollutants, namely hydrocarbons, carbon monoxide, nitrogen oxides, and particulate matter.The aim of this work was to improve the knowledge about the emission factors of gas phase and particle-associated emissions from vehicle exhaust. The impacts of aftertreatment devices and fuel quality on regulated and unregulated species were studied. Several sampling campaigns with different types of vehicles were conducted in the vehicle emission laboratory (VELA) at the European Commission Joint Research Centre (EC-JRC) Ispra, Italy. The vehicles chosen were representative of some categories circulating in Europe (heavy duty vehicles, light duty vehicles, two-stroke mopeds), and either standard fuel or some alternative fuels (ethanol and liquefied petroleum gas) were used. The gas phase was monitored by a Fourier transform infrared spectrometer (carbonyls, nitrogen-containing species, small hydrocarbons), and a resonance-enhanced multiphoton ionization time-of-flight mass spectrometer (mono and polycyclic aromatic hydrocarbons). The particulate phase was analyzed by a high-resolution time-of-flight aerosol mass spectrometer (organic aerosol, chloride, nitrate), and a multiangle absorption photometer (black carbon). The mopeds were found to have the higher emission factors of primary organic aerosol and polycyclic aromatic hydrocarbons. While efficient to reduce the regulated emissions, the after-treatment used to comply with the moped Euro 2 emission standard might be responsible of large emission of unregulated organic aerosols. Most of the emission linked to the gasoline light duty vehicles were released before the light-off of the catalyst. Whereas alternative fuels studied helped to reduce ozone precursor emissions, the emissions associated to the cold start of the vehicle reduced this beneficial effect. Finally, the heavy duty diesel vehicle featured the highest NOx and black carbon emissions. Despite efficient retrofit and after-treatment systems (for particles and NOx), these vehicles could release significant amount of NH3. These results provided valuable insights for the drafting of legislation related to the achievement of sustainable transport in Europe.
96

Studie oblasti Sadová v Brně / Study of the Sadova area in Brno

Souček, Petr January 2022 (has links)
The diploma thesis focuses on the assessment of transport infrastructure in Brno, the Sadová area and presents a solving proposal for selected problems. The work is based on the site's survey and measurement, as well as data collected from all available sources. The CDV methodology on road safety inspections in accordance with EU Directive 2008/96/EC was used as a basis for processing the analysis of individual sites. A detailed risk assessment is performed at four sites in the area where problems are identified and a proposal for their solution is given. In relation to public transport, the work also evaluates the individual bus stops, identifies major drawbacks, and contains suggestions for a comprehensive solution of bus stops emplacement. The proposal also includes suitable places for the implementation of pedestrian crossings on Kociánka.
97

Analýza a srovnání dopravní nehodovosti České republiky, Norska a Finska / Analysis and Comparison of Traffic Accident Data in the Czech Republic, Norway and Finland

Zemánek, Lukáš January 2011 (has links)
The master‘s thesis deals with accidents in road transport in the Czech Republic, Norway and Finland. It includes analysis and comparison of accident rates in those states, an overview of accidents in recent years, legislative requirements and trends in this area and then based on analysis of current proposals includes measures to increase safety in road transport.
98

Analýza dopravy a návrh řešení ve městě Šlapanice / Transport analysis and proposal of solution in Šlapanice

Frýbort, Miroslav Unknown Date (has links)
This diploma thesis focuses on the analysis and solution of selected transport modes of the town of Šlapanice in the South Moravian Region. This work contains an analysis of transport modes, especially for road transport, parking and cycling and proposes their optimization to increase safety, fluidity or comfort for residents. The first part describes the current state of road, rail, public and bicycle transport. In the second part, the work focuses on road transport, evaluated in terms of traffic safety and compliance with legislative requirements with a proposed solution. Furthermore this work solve parking, when the town of Šlapanice was divided into functional zones according to use and shortcomings were found in selected localities with stating the proposed solution. In the last part, the cycle routes are solved, their shortcomings are found and solutions are given.
99

Transport under Emission Trading: A Computable General Equilibrium Assessment

Abrell, Jan 12 July 2010 (has links)
This thesis analysis the impact of private road transport under emission trading using two different Computable General Equilibrium models. A static multi-region model with special emphasis on the European Union, addresses the welfare impact of road transport under the European Emission Trading System. Including terms-of-trade effects, this model does not account for congestion which is the main externality of road transport. Furthermore, technological details of electricity generation which are an important factor in evaluating climate policies are not included. Therefore, the second model is a static Small Open Economy model of the German economy including congestion effects and detailed technological characteristics of electricity generation. The results of both models highlight the important role of already existing taxes on transport fuels for the evaluation of carbon mitigation measures in road transportation.
100

Electric roads as future road transport : A study of Electric Road System (ERS) to facilitate sustainable road transport for passenger cars

Nashed, Rose-Marie January 2019 (has links)
Sweden is a geographically large and sparsely populated country, with a need for road transport for individuals as well as for logistics. Domestic road transport largely contributes to air pollutions, where passenger cars account for the largest share. Looking ahead, the present rate of reduction of emissions is not enough to reach the climate targets of a fossil free transport sector.  Electric road system (ERS) has emerged to deal with drawbacks of electric vehicles. Several solutions are being evaluated at demonstration projects. Until now, ERS is mainly associated with heavy vehicles and the relation to passenger cars is not as clear, where this study explores the social advantages of ERS and passenger cars.  A case study is conducted, where an ERS implementation between Helsingborg and Malmö as part of the European route E6 in Sweden is modelled. The NPV with an economic lifespan of 20 years and an interest rate of 3.5 percent amounts to 350 MSEK, considered as high profitable. The CO2 emissions of the studied system would be reduced by 102 000 tonnes CO2, corresponding to a decrease of about 60 percent. Looking at the studied system, heavy trucks are contributing to the most impact. Nevertheless, there is great potential for passenger cars utilising ERS to decrease their emissions and fuel costs.  Several semi-structured interviews have been conducted to highlight the prevailing views of ERS and passenger cars and the impact of cost-benefit analysis (CBA) for decision-making of transport investments. Several diverse views of ERS and passenger cars exist. ERS is a large investment, where the main need is among heavy vehicles. However, the profitability would increase as the amount of vehicles utilising ERS increases. In a future road transport system, it is possible that several technologies such as ERS, fast chargers and autonomous vehicles could be utilised simultaneous, and complete each other rather than being substitutes. It is conceivable that ERS is planned out of the needs of heavy vehicles, where passenger cars might benefit of the system as well. More passenger cars would likely utilise ERS as it is implemented to a greater extent.  Further, CBA could provide a perception of the investment. However, it does not ensure that the projects are performed or chosen out of highest NPV, since several aspects besides the profitability are considered. Available information of ERS for CBA is yet limited and more data, such as effect relations is needed to facilitate well-founded decisions. In the future, it is likely that CBA of transport investments would become more complex, where several technologies would be considered. The transport sector will most likely alter, and existing assessment methods will presumably be adjusted in line with this. / Sverige är ett geografiskt stort och glesbefolkat land med ett stort behov av vägtransporter för såväl privatpersoner som för logistik. Inrikes vägtransport bidrar i stor utsträckning till luftföroreningar, där personbilar står för den största andelen av utsläppen. Den nuvarande minskningstakten av utsläpp är inte tillräcklig för att nå klimatmålen om en fossilfri transportsektor.  Elvägar (ERS) har utvecklats för att hantera utmaningar med elfordon. Flera lösningar av teknologin testas vid demonstrationsprojekt och hittills är ERS främst förknippat med tunga fordon. Dock är relationen till personbilar inte lika tydlig, där denna studie undersöker de samhälleliga fördelarna med ERS relaterat till personbilar.  En fallstudie har genomförts, där en installation av ERS mellan Helsingborg och Malmö som en del av E6 i Sverige modelleras. Nettonuvärdet med en ekonomisk livslängd på 20 år och en internränta om 3,5 procent uppgår till 350 MSEK, vilket betraktas som hög lönsam. Koldioxidutsläppen från det studerade systemet skulle minskas med 102 000 ton CO2, vilket motsvarar en minskning med drygt 60 procent. Utifrån det studerade systemet bidrar tunga lastbilar till den största inverkan. Likväl finns stor potential för personbilar att nyttja den installerade elvägen för att minska sina utsläpp och bränslekostnader.  Flera semistrukturerade intervjuer har genomförts för att lyfta fram de rådande synsätten på ERS och personbilar och effekterna av samhällsekonomiska analyser (CBA) vid beslutsfattande av transportinvesteringar. Det finns flera olika synsätt på ERS relaterat till personbilar. ERS är en stor investering, där det största behovet finns bland tunga fordon. Emellertid ökar lönsamheten med antalet fordon som använder systemet. I ett framtida vägtransportsystem är det möjligt att flera teknologier såsom ERS, snabbladdning av elbilar och autonoma fordon utnyttjas samtidigt och används som komplement istället för att ersätta varandra. Det är tänkbart att ERS planeras och installeras utifrån behoven hos tunga fordon, där även personbilar kan dra fördel av systemet. Dessutom är det sannolikt att fler personbilar skulle utnyttja ERS allteftersom det installeras i större utsträckning.  Vidare kan CBA ge en uppfattning om investeringen. Det säkerställer dock inte att projekten genomförs eller väljs utifrån högsta nettonuvärde, eftersom flera aspekter utöver lönsamheten beaktas. Tillgänglig information om ERS för CBA är ännu begränsad och mer data såsom effektsamband behövs för att säkerställa välgrundade beslut. I framtiden är det troligt att CBA av transportinvesteringar blir mer komplexa, där flera tekniker behöver beaktas. Transportsektorn kommer sannolikt att förändras, och befintliga bedömningsmetoder kommer förmodligen att anpassas i linje med detta.

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