نتایج جستجو برای: rail transportation

تعداد نتایج: 65841  

2007
David Levinson Feng Xie

This paper examines the nature of first mover advantages on spatiallydifferentiated surface transportation networks. The literature on first mover advantages identifies a number of sources that explain their existence. However whether those sources exist on spatial networks, and how they play out with true capital immobility have been unanswered questions. By examining empirical examples includ...

2010
Maite Peña

This paper deals with the design of timetables for complex railway systems. Rail transportation has become a rapid, clean and efficient way to transport passengers and freights. A good timetable design is crucial to ensure the quality of the services trying to improve the efficiency of the whole system. Only such a sustainable transportation system will be in accordance to the requirements of f...

Journal: :Health and human rights 2014
Lloyd Burton Paul Stretesky

The connection between human rights and climate change is most evident when examining carbon dioxide emissions that result from burning fossil fuels (e.g., sea level rise and displaced coastal cultures). However, the transport of fossil fuels also has human rights implications for human rights and climate change. This research focuses on the health and safety risks inflicted on those residents ...

Journal: :Transportation Science 2016
Hai Wang Amedeo R. Odoni

The Last Mile Problem (LMP) refers to the provision of travel service from the nearest public transportation node to a home or office. We study the supply side of this problem in a stochastic setting, with batch demands resulting from the arrival of groups of passengers who request last-mile service at urban rail stations or bus stops. Closedform approximations are derived for the performance o...

Today, transportation of hazardous materials (i.e., hazmat) is a very important issue for researchers due to the risk of this transit, which should be considered for development of industries and transportation. Therefore, a model that is useful should consider the risk and damage to humanitarian and environmental issues due to transit of hazmat materials. By considering the related cost, the r...

2017
BENJAMIN D. PORTER

J n response to the current and anticipated changes in the type and intensity of land use activities on Manhattan's West Side, the New York City Department of City Planning is conducting the West Side Transitway Study to ensure that adequate transportation services are in place to serve the new workers, residents, and visitors. The study, funded by the UMTA, is a four-phase effort that is exami...

2012
M. Miyoshi T. Takeba M. Miyatake

Although rail transportation is conventionally considered to be environmentallyfriendly, currently research is being carried out globally to find ways to improve energy-saving in rail transportation. Development of an energy management system for railways and new transport systems including the BRT (Bus Rapid Transit) system has begun. The railway energy management system manages and controls t...

2007
John F. McDonald Richard J. Arnott Daniel P. McMillen

This chapter is an introduction to the economics of the connection between urban transportation and land use. The nature of the transportation system strongly influences the patterns of land use in an urban area. Indeed, the long-run histories of urban areas sometimes are identified with the dominant mode of transportation of the time; the age of rail, the age of the automobile, and so on. Supp...

2008
Matthew W. Wilson Kevin S. Ramsey

1.0 Introduction Transportation agencies across the U.S. are challenged in their efforts to engage the public in the problems of prioritizing regional transportation improvement projects--such as highway expansions or new light rail lines--and determining how to fund such improvements. These decisions are typically shaped by a variety of local, state, and federal laws as well as the competing t...

2002
Cynthia Barnhart Amy M. Cohn Ellis L. Johnson Diego Klabjan George L. Nemhauser Pamela H. Vance

Crew scheduling can be defined as the problem of assigning a group of workers (a crew) to a set of tasks. The crews are typically interchangeable , although in some cases different crews possess different characteristics that affect which subsets of tasks they can complete. Crew scheduling problems appear in a number of transportation contexts. Examples include bus and rail transit, truck and r...

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