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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.
11

On Demand Mobility Commuter Aircraft Demand Estimation

Syed, Nida Umme-Saleem 12 September 2017 (has links)
On-Demand Mobility (ODM) is a concept to address congestion problems. Using electric aircraft and vertical take-off with limited landing (VTOL) capabilities, the ODM concept offers on demand transportation service between designated landing sites at a fraction of driving time. The purpose of this research is to estimate the potential ODM demand and understand the challenges of introducing ODM using the Northern California region (including major cities like San Francisco, Sacramento, and San Jose) as an area of study and a second, less rigorous analysis for the Washington-Baltimore region. A conditional logit model was developed to estimate mode choice behavior and to estimate ODM demand; presenting automobile and public transportation as the two competing modes to ODM. There are significant challenges associated with the service including ability to operate in bad weather, vehicle operating cost, siting and cost of landing sites, and overall public acceptance of small, remotely operated aircraft. Nine scenarios were run varying the input for a base fare, landing fare, cost per-passenger-mile, auto operational costs, and ingress (waiting) times. The results yielded sensitivity of demand to all these parameters and especially showed a great difference in demand when auto costs were decreased from the standard American Automobile Association (AAA) cost per mile to a likely, future auto operating cost. The challenge that aerospace engineers face is designing an aircraft capable of achieving lower operational costs. The results showed that in order for the ODM to be a competitive mode, the cost per passenger-mile should be kept at $1. / Master of Science / On-Demand Mobility (ODM) is a concept to address congestion problems. Using an electric propulsion aircraft, the ODM concept offers on demand transportation service between designated landing sites at a fraction of driving time; an “air taxi” or “air Uber” as coined by media outlets. The purpose of this research is to estimate the potential ODM demand and understand the challenges of introducing ODM using the Northern California region (including major cities like San Francisco, Sacramento, and San Jose) as an area of study and a second, less rigorous analysis for the Washington-Baltimore region. A model was developed to estimate mode choice behavior and to estimate ODM demand based on existing travel behavior and patterns in the Northern California region. There are significant challenges associated with the service including ability to operate in bad weather, vehicle operating cost, siting and cost of landing sites, and overall public acceptance of small, remotely operated aircraft. The results from the model yielded sensitivity of demand to these challenges and especially showed a great difference in demand as the cost of operating the car decreases in the future, making it a great competitor to the ODM concept. The major challenge that aerospace engineers face is designing an aircraft capable of achieving lower operational costs. The results showed that in order for the ODM to be a competitive mode, the cost per passenger-mile should be kept at $1.
12

Riyal balances : monetary adjustment in Saudi Arabia (1978-1998)

Taher, Nahed January 2001 (has links)
No description available.
13

Long term load forecasting for the Central Region of Saudi Arabia

Al-Aoudah, Ahmed A. January 2002 (has links)
No description available.
14

An investigation of investment theory and its application to the demand for tractors in the European Economic Community

Fletcher, G. A. January 1987 (has links)
No description available.
15

The application of short-term forecasting techniques applied to the control of electrical load in an energy management scheme

Sherwood, P. M. January 1988 (has links)
No description available.
16

A forecasting study of the aluminium industry : A pre-investment study of the Nigerian aluminium industry

Onwugbolu, C. A. January 1981 (has links)
No description available.
17

Server and management system design for a distributed VoD service

Papanikolaou, Aikaterini January 2001 (has links)
No description available.
18

The study of motorway operation using a microscopic simulation model

Sultan, Beshr January 2000 (has links)
No description available.
19

A critique of Lancaster's approach to the economics of quality : an agricultural economics approach

Bowbrick, Peter January 1994 (has links)
No description available.
20

Buffer stock money, disequilibrium, and the disequilibrium real balance effect

Barlow, David January 1993 (has links)
No description available.

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