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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

Vehicle for an aerial transport system

Louw, Elita 26 November 2008 (has links)
This thesis deals with the interior architecture of the vehicle for an aerial transport systems as a method of transport. The hypothesis argues that social barriers can be challenged through the physical formation of the systems,its structure,assembly and adaptability to seasonal site. The platform used to explore this premise is the Sani Pass in the Southern Drakensberg.There is a stigmatization around cable car systems within the raw,primal,vast and overwhelming South African landscape. It is a silent debate lingering within every mind at the mere mentioning of an aerial ble car system. / Dissertation (MInt(Prof))--University of Pretoria, 2009. / Architecture / unrestricted
2

Models for Life Cycle Cost Estimation of Spare and Wear Parts for Urban Gondola Lift Systems : A Case Study

Borhidai, András January 2019 (has links)
Urban gondola lift systems are becoming a regular sight rather than a rarity throughout the globe. Authors attribute their increasing popularity to factors such as environmental sustainability, operational reliability and cost efficiency compared to other right-of-way transit solutions. Replacing conventional modes of transit with urban gondolas cannot however be achieved without tackling several operational challenges. As potential new operators often lack the human resources and knowledge base required to successfully man, operate and maintain systems, they turn to manufacturers for increased after-sale support. Companies of the Doppelmayr Garaventa Group, the world’s largest manufacturer of gondola lifts, responded to these demand patterns by offering complete operations & maintenance contracts which, among other services, include the delivery and installation of reserve components. Calculating the total cost of such components for the life cycle of a system however still proves to be demanding and requires new computational models to increase its efficiency. The applicative purpose of this paper was thus set to formulate a model that is capable of performing life cycle cost calculations for components of urban gondola lift systems, according to a set of criterion defined by industrial entities. Its research aim is accordingly to answer questions about how concurrent instruments are set up, what models does contemporary research regard as efficient in similar industries and whether these models are able to enhance life cycle cost calculation capability within the urban gondola lift market. These aims were achieved through an analysis of current company practices, followed by the formulation of two new model alternatives based on a review of contemporary scientific literature, and concluded by an iterative process wherein the two alternatives were compared to each other in terms of performance and then merged to combine the best performing features of each version. Through a second iteration, the merged model was then compared to current instruments and established as the superior choice, using industry criteria. The paper concludes by resolving the research questions it set out to answer and making further recommendations for the direction of future research and studies.
3

goG - die Neue Urbane Mobilität

Höhne, Hans-Georg 09 September 2021 (has links)
Es wird ein umfassendes Verkehrskonzept für das urbane Umfeld beschrieben, welches durch den neuen kollaborativen Fahrzeugtyp mit dem Namen goG [go 'dschi] ermöglicht wird. Fahrzeuge dieses Typs können sich nahtlos im bestehenden Straßenverkehr eingliedern, ohne dass daran Anpassungen vorzunehmen sind. Auf Grund seiner kollaborativen Fähigkeiten können goGs aber auch zu Konvois des ÖPNVs formiert werden und annähernd 80% der im Vergleich für PKWs benötigten Parkplatzfläche einsparen. Des weiteren befähigen sie das goG in voller Fahrt von der Straße an eine über der Straße verlaufenden Umlaufseilbahn zu wechseln. Ein gittergleiches Netzwerk solcher Seilbahnen erlaubt das automatische Durchrouten von goGs 6 Meter über dem Straßenniveau, bei einer konstanten Geschwindigkeit von 50 km/h. An Seilbahnknotenpunkten werden durch Manipulatoren die goGs in voller Fahrt von einer Seilbahn in die vorgesehene nächste Seilbahn umgehängt. Durch hängebrückenartige Aufhängung der Umlaufseilbahnen oberhalb bestehender Straßenzüge werden keine zusätzlichen Flächen benötigt. Der Durchsatz einer Fahrbahn vergrößert sich durch die darüber geführte Umlaufseilbahn um mehr als das Doppelte. Ein autonomes Fahren bei maximal 6km/h zur nächsten goG-Linie des ÖPNV bzw. Seilbahn führt zu einer Vielzahl von Synergieeffekten.

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