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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

A traffic behaviour study with particular reference to bus operations at the stop area with mixed traffic

Guo, Jin January 1996 (has links)
No description available.
2

Modelling of traffic operations in urban networks in developing countries

Hossain, Moazzem January 1996 (has links)
No description available.
3

Vliv aktivního a paasivního zotavení na opakovaný krátkodobý motorický výkon / The ifluence of active and passive recovery for repetitive short-term motorised exercise

Šilar, Martin January 2015 (has links)
Title: The ifluence of active and passive recovery for repetitive short-term motorised exercise Objectives: To explore and discover the influence of active and passive recovery for repetitive short-term motorised exercise. Methods: Research of the professional publications used during the process. Target group sample consists of female footballers of FK Dukla Praha, who actively play the chosen sport - football. The entire sample were divided into two groups containing 5 members. Each group completed 2 tests with a different type of recovery and a 48 hour break. The results were measured with a photocell and then evaluated and utilised. Results: We discovered that during repetitive short-term motorised exercise passive recovery is better than active recovery. For passive recovery, the overall average of the measured values of 10.6 and active recovery, it was 10.67. Keywords: active recovery, passive recovery, motorised excercise, agilities of performance
4

A comparative study of mechanized cable harvesting systems in New Zealand

Nuske, Samuel Ryan January 2014 (has links)
Productivity and safety concerns of traditional cable harvesting systems have been the key drivers for increasing levels of mechanisation in New Zealand. The use of grapples in cable yarding could eliminate the need for motor-manual tree fallers and breaker-outs in most situations. A comparative time study was carried out on two mechanised cable harvesting systems utilising grapple carriages in an attempt to better understand the benefits and limitations of each system in different harvest settings. These systems include the Mechanical system which involved a swing yarder operating a mechanical grapple carriage and the Motorised system, which used a tower yarder with a motorised grapple carriage. The Mechanical system took less time to accumulate felled trees but took longer to unhook trees on the landing than the Motorised system. The Mechanical system had a shorter cycle time (2.07 minutes) than the Motorised system (2.32 minutes) and extracted 1.3 tonnes more than the Motorised system per cycle. The Motorised system had shorter cycle times when in horizontal haul distances of less than 90 metres, but had the longest times when the distance exceeded this. Utilisation rates were similar between the two systems, although the main difference in delays between the two systems was the use of surgepiles on the landing by the Motorised system. Both systems were effective, although on average the Mechanical system was more productive, with a productivity of 45 t/SMH, compared to 40 t/SMH for the Motorised system. The Mechanical system was the most productive when extracting mechanically felled and pre-bunched or trees while the Motorised system was the most productive when extracting motor-manually felled trees. Pre-bunching with an excavator was a more cost effective method than handing stems directly to the grapple carriage. Further research of the Mechanical system under more adverse conditions would allow a better overall comparison.
5

An analysis of accessibility to grocery stores by walking and cycling. : A comparative study of Ålidhem, Tomtebo, Carlshem and Sofiehem neighbourhoods in Umeå using ArcGIS Network Dataset

Namoobe, Choolwe Chisuta January 2018 (has links)
Accessibility is a gateway to accessing opportunities or service sites, i.e., grocery shopping, healthcare and jobs and it has been used as a proxy to measure inequalities. The equity, in travel time or distance, to accessing of these services is vital to ensure high accessibility hence providing equality. Population increase leading to urban sprawl affects accessibility in the absence of prudent residential spatial planning and transport systems and infrastructure. Urban sprawl creates a distance between populations and centres of services such as grocery stores. This promotes the growth of car-dependency to accessing these services that are not easily reachable by non-motorised transport of walking and biking.This thesis measures accessibility to grocery stores by comparing the travel time of populations in the four neighbourhoods, of Ålidhem, Tomtebo, Carlshem and Sofiehem, by walking and biking. The measuring is done by using the ArcGIS Network Analyst to create and build a single-modal network dataset of pedestrian and bike lanes in the study area. Accessibility to grocery stores is measured using the service areas created based on the grocery store location and it highlights all the accessible streets from the centre within a time impedance. Afterwards, the populations are aggregated in each service area of each neighbourhood to compare the time difference of accessibility to a grocery store.With distance decay effects, the walking time distance restricts accessibility to grocery stores to a limited population in the neighbourhoods. The bike time distance, however, increased the residents in the study area who can access the grocery stores. The new location for a Coop grocery store provides the highest accessibility to grocery stores compared to the Ålidhem Centre grocery store.From the results of the analysis, the bike travel is the most equitable hence equal mode of active transport for all the four neighbourhoods. / <p>The best time to build walk and cycle paths was 20 years ago. The second best time is now! This publication is my first and very close to my heart as it shows how land use and transport are related to reduce travel times and also promote more non-motorised transport usage. </p>
6

Návrh manipulátoru vzorku pro CCHM mikroskop / Design of manipulator of the sample for CCHM microscope

Špaček, Matěj January 2021 (has links)
In the Laboratory of the Experimental Biophotonics at Brno University of Technology, a new generation of the Coherence-Controlled Holographic Microscope (CCHM) is being developed. Because of the automation of certain microscope procedures, a fully motorized three axis computer controlled manipulator of the sample is to be employed. A fast and accurate lateral positioning in a range of several centimeters is required. For the focusing capability, very precise positioning in the optical axes is required as well. Initially, the basics of microscope manipulator design are presented. Then, commercially available solutions are introduced and compared with special focus on its possible implementation in the new generation of CCHM. However, due to the specific design of the new CCHM, available manipulators are not suitable. Therefore, a new optimized manipulator design is introduced in the second part of the thesis. A selection of its appropriate elements, especially actuators, is based on a review. For the new manipulator design, a technical documentation was made and a testing software was developed. A crucial part of the manipulator was assembled and tested.
7

Les loisirs motorisés hors route. Conflits controverse et réseaux d'actants / Off road motorised recreation : Conflicts, controversy and actor-network

Haye, Lisa 28 November 2012 (has links)
Le développement récent des Loisirs Motorisés Hors Route (LMHR) suscite une controverse et de vives réactions dans les milieux du sport et de la protection de l'environnement. Le phénomène est encore peu étudié, à la fois du fait qu'il est récent, que l'argumentation relève de plusieurs disciplines et que les loisirs motorisés, s'ils font partie sans problème de l'outdoor recreation nord-américaine, sont rejetés en France par les autres sportifs et ne sont pas reconnus de façon évidente comme relevant du domaine d'une discipline particulière. Afin de combler un manque dans la littérature scientifique française, cette thèse vise à apporter une connaissance fine de la dynamique de la controverse – en tant qu'échange d'arguments génériques – et des conflits dont les LMHR font l'objet. Elle présente deux originalités majeures : sa thématique et son approche combinant les théories de l'acteur-réseau avec les outils de visualisation et d'analyse de réseau basés sur la théorie des graphes. Cette construction théorique et méthodologique visait à interroger les interrelations entre la controverse portée par des collectifs présents sur la scène nationale et les conflits et interactions sur le terrain. Pour cela, nous avons mené des enquêtes sur quatre scènes : la scène nationale (composée de collectifs pro et anti-motorisé, de Fédérations, de constructeurs, de gestionnaires et décideurs et d'élus) ; deux scènes locales conflictuelles où des démarches de gestion sont en cours (le PNR du Pilat et les Chambarans) ; une scène locale où aucun conflit n'est visible sur la scène publique (le canton de La Grave – Villar d'Arène). Nos résultats montrent, que bien que la controverse trouve ses racines dans des conflits sur le terrain, il n'existerait pas de coprésence entre acteurs qui s'opposent. D'abord, en l'absence de conflit, la scène de La Grave apparaît déconnectée du reste du réseau. Ensuite, les détracteurs des LMHR se mobilisent dans la controverse mais ne cherchent pas directement à agir sur le terrain. Par contre, les défenseurs de la pratique s'impliquent, eux, aux deux niveaux. Enfin, les gestionnaires et agents de la police de l'environnement confrontés à la gestion des activités, nouent des liens sur le terrain et au niveau national, à la fois avec les défenseurs et les détracteurs des LMHR ; devenant parfois des acteurs-passerelles. D'un point de vue théorique et méthodologique, les outils de visualisation et d'analyse de réseau ont montré leur intérêt dans le cadre d'une approche par l'acteur-réseau ; les perspectives apparaissent riches. Mots-clés : Sociologie, loisirs motorisés hors route, théories de l'acteur-réseau, visualisation et analyse de réseau, controverse, conflits, gestion / The recent expansion of off road motorized recreation raises controversy and strong reactions from the worlds of sports and environmental protection. The phenomenon is still poorly studied, because it is recent, because the argumentation falls across disciplines and because motorized recreation is rejected by other recreationists. Moreover, motorized recreation is obviously not recognized as a domain of a particular discipline in France, whereas it is truly integrated to outdoor recreation in North America. To fill a gap in the French literature, this thesis aims to provide a detailed understanding of the dynamics of the controversy - as an exchange of generic arguments - and conflicts around motorized recreation. The thesis has two main peculiarities: its theme and its approach combining the actor-network theory, visualization tools and network analysis based on graph theory. The aim of this theoretical and methodological building was to examine the interrelationships between the controversy – carried by groups who are present on the national scene – and conflicts and interactions in the field. To do this, we investigated four scenes: the national scene (composed of pro-motorized and anti- motorized collectives, Federations, manufacturers, managers, policy makers and elected officials), two local scenes where conflict management approaches are in progress (NRP Pilat and Chambarans), a local scene where no conflict is visible in the public arena (the township of La Grave - Villar d'Arene). Our results show that although the controversy is rooted in conflicts on the field, there would be no copresence between opposing stakeholders. First, in the absence of conflict, the scene of La Grave is disconnected from the network. Second, critics of motorized recreation rally in controversy but do not try to act directly on the field. By contrast, the defenders of those activities imply them at both levels. Finally, managers and actors in charge of environmental police who face the management of the activities, build relationships in the field and at a national level, with both defenders and detractors of motorized recreation, sometimes becoming gateways actors. From a theoretical and methodological point of view, tools for visualization and network analysis have shown their interest in the context of the actor-network theory: perspectives appear to be rich. Key words : Sociology, off road motorized recreation, Actor-Network Theory, viualization and network analysis, controversy, conflicts, management.
8

Konflikter på gång och cykelbana. : Ett skadepreventivt perspektiv. / Conflicts on pedestrian and bicyclepaths : an injury prevention perspective

Pettersson, Marie January 2010 (has links)
Att vistas på gång- och cykelbanor kan vara en situation som upplevs som otrygg av de oskyddade trafikanterna som delar på detta utrymme. Samexistens och hänsyn till medtrafikanter är av vikt för att minska konflikter och skador som uppstår i denna miljö. En anledning till konflikter mellan fotgängare och cyklister är den höga hastigheten som cyklister kan färdas i. Denna hastighet skapar otrygghet bland fotgängare samt hos de cyklister som färdas i ett långsammare tempo. Otryggheten, beteende hos de båda trafikantgrupperna samt hastigheten leder i vissa fall till konflikter med kollisioner och personskador som följd. Att separera gång- och cykeltrafiken minskar till viss del konflikterna mellan dessa två grupper, men konflikten mellan cyklister som färdas fort och de cyklister som färdas långsamt kvarstår samt att otryggheten till viss del kvarstår hos fotgängarna, speciellt i de fall separeringen enbart skett med färgmarkering. Andra orsaker till otrygghet och konflikter inom och mellan dessa grupper kan bland annat vara ljus och mörkerförhållanden, vägens underlag, tekniska fel på cykeln samt beteende hos trafikanterna. Fotgängare och cyklister drabbas hårt vid en olycka även med en annan oskyddad trafikant. Den upplevda känslan av otrygghet är större än den faktiska risken för att en olycka faktiskt skall inträffa. Kollisioner mellan fotgängare och cyklister på gång och cykelbanor är inget stort problem, statistiskt sett, men grundat på den upplevda oron och brist på trygghet i denna miljö får problemet större proportioner än det statistiska underlaget påvisar / Using the footpaths and cyclelanes may be a situation that is perceived as unsafe by the vulnerable road users who share this space. Coexisting and consideration for other road users is important to reduce conflicts and damages arising in this environment. One reason for conflicts between pedestrians and cyclists are the high speed at which cyclists can travel in. This speed creates insecurity among pedestrians and cyclists that chooses to move in a slower pace. Insecurity, behavior of the road user and the speed of the cyclist results in certain cases to conflicts with collisions and injuries as a result. Separating pedestrian and bicycletraffic decreases part of the conflicts between these two groups, but the conflict between cyclists who are traveling at high speed and the cyclists are traveling at a slow pace, persist and insecurity to some degree remains with the pedestrian, especially in cases separation occurred only with separation through a coloured centerline. Other causes of insecurity in a traffic environment and conflict within and between these groups may include how the roads are lit during the dark hours, darkness and sunflares, road surface, technical failure of the cycle and behavior of road users. Pedestrians and cyclists receive severe injuries even in an accident with another unprotected road user. The perceived sense of insecurity is greater than the actual risk of an accident actually occurring. Collisions of pedestrians and cyclists on footpaths and cyclelanes is rarely a problem, statistically, but based on the perceived fears, insecurity and lack of security in this environment, the problem may be of greater proportions than the statistical data reveals.
9

Non-motorised transport as key element to an integrated rapid public transport network: the Cato Manor case

Cele, Nomfundo Gugulethu Precious 12 1900 (has links)
In South Africa, non-motorised transport (NMT) modes such as cycling and walking are generally used by poor people to access centres of employment, public services (for example, library, educational institutions, public transport) and other amenities as well as for recreational activities. Notably, the lack of integration among the different public transport modes (namely, NMT, bus, train and minibus) creates a major obstacle in the provision of an integrated, sustainable and effective public transport system. Likewise, the absence of proper recognition of NMT in government and social strata creates a problem in the supply of a satisfactory public transport service, that is, a public transport service that meets the needs of all users. Motivated by the gap in NMT integration with the overall public transport system, the study was undertaken to explore enabling factors to integrate NMT as a key element of the Integrated Rapid Public Transport Network (IRPTN). Social and political factors were explored, specifically, post-modern theory in urban transport planning and policy. In addition, the study explored enabling factors to integrate NMT as a feeder service and key element of an IRPTN from the perspectives of the participants of the study. The results of the study showed that infrastructure, the environment, promotion, and safety and security were identified as enabling factors to integrate NMT as a key element of an IRPTN. According to the results, government needs to promote NMT use. Subsequently, construction and the repair or widening of sidewalks and roads needs to be done. The results also showed that attractive NMT environments are necessary as well as adequate safety and security measures along NMT routes. It is suggested that a seamless, safe, inclusive, affordable, effective and reliable public transport system could be provided once these enabling factors are in place. Further research is advised, within the wider public transport population in eThekwini, as well as other NMT and public transport systems. The emphasis of this research should be on finding out whether the broader public transport population responds in the same way to the idea of integrating NMT and public transport. / Transport Economics, Logistics and Tourism / M. Com. (Transport Economics)
10

A study on the sustainability of a non-motorised transport CBD in Upington / Barend Jacobus Scheepers

Scheepers, Barend Jacobus January 2014 (has links)
The introduction of the private vehicle in urban communities (towns and cities) resulted in numerous urban problems experienced in the developed and developing world. These include, inter alia, economic inefficiency due to traffic congestion; a high mortality rate relevant to vehicle users and non-vehicle users; air & noise pollution and overall poor quality of life for residents. As part of the literature review, it was found that the level of urban problems experienced will intensify and worsen, if sustainable transportation systems were not introduced in urban areas. These predictions were made based on the following three factors: * The increase of the world population – It was predicated that the world population will increase by 2.3 people billion between 2011 and 2050. The total world population is therefore expected to be 9.3 billion in 2050. * The urbanisation rate experienced – It was predicated that the entire world population growth, along with an additional 300 million people, will be absorbed by urban areas between 2011 and 2050. Urban communities will therefore accommodate 6.2 billion people, or 67% of the world population, in 2050. * The level and growth in private vehicle ownership – The developed world consists of a high level of vehicles per 1 000 residents (655 in 2010), but experienced a decline in growth of 0,8% between 2005 and 2010. Contrary to the developed world, the developing world had a low level of vehicle ownership per 1 000 residents (128 in 2010), but experienced an increase of 21.9% between 2005 and 2010. Apart from the above data, the literature review introduced planning theories and international as well as national policies. The three planning theories that were researched each revealed ten principles of sustainable alternative transportation measures for an unsustainable private vehicle orientated urban area. These sustainable measures were used to introduce the option of a sustainable non-motorised transportation system to the demarcated study area. The three planning theories researched were: * The Smart growth theory * New urbanism, and * Pedestrian mall developments. International and national policies were scrutinised to obtain a point-of-view on how different countries, cities, spheres of government and type of documentation addressed non-motorised transportation developments. The examination of the policies also provided insight on how South African spheres of government were addressing non-motorised transportation in South African urban communities, if at all. The international policies include the “Share the road” document compiled by the United Nations in 2010; Mount Rainier Town Centre Urban Renewal Plan (2005) (USA) and Ottawa’s Transport Master Plan (2008) (Canada). The South African policies included the National Non-motorised Transportation Policy (2008); National Transport Master Plan (2011); Northern Cape Provincial Spatial Development Framework (2012) and //Khara Hais Spatial Development Framework (2012) (local municipality). Following the literature review, is an empirical study consisting of 2 sections. Firstly, a pilot study, which consists of international and local examples, was researched. These examples were identified as they consist of vehicle-free areas within the central business district. The success of the vehicle-free developments was measured and the information utilised to guide recommendations for the demarcated study area within the town of Upington (case study). Pilot study examples include Copenhagen, Denmark; Ghent, Belgium; Santa Monica, USA and Cape Town, South Africa. Secondly, a case study was analysed. A study area within the South African town of Upington, Northern Cape Province was demarcated. The status quo of relevant aspects, including but not limited to; the climate, coverage, parking, road hierarchy and transport modes were obtained and analysed. This analysis was conducted in order to establish a) if the study area experienced urban transport related problems and b) if the implementation of a non-motorised transport system will be more sustainable for the general public of Upington, as opposed to the current private-vehicle dependable system. Inputs from Town Planners were also obtained in order to obtain a multi-dimensional point-of-view. In the conclusion of the researched study it was found that a) the planning theories have been successfully implemented in the examples of the pilot studies and therefore these principles could apply to the demarcated study area in Upington. b) International policies addressed non-motorisation developments more comprehensively than the South African policies. Shortages especially existed at the provincial and local spheres of government where implementation should take place. c) Through the analysis of the case study it become evident that the demarcated study area within Upington was burdened by private vehicle orientated transport problems. However, the analysis also indicated that the study area has the potential to make a successful transition from being dependable on unsustainable private vehicles to sustainable non-motorised transportation. Finally, tailor-made recommendations (based on information derived from planning theories, policies, pilot study and case study) were made for the study area situated within Upington. These recommendations include the phased development of a pedestrian-only area, the development of parking garages (outside the pedestrian area), which are linked to the pedestrian-only area and the development of a public transportation system by means of busses. / MArt et Scien (Urban and Regional Planning), North-West University, Potchefstroom Campus, 2014

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