نتایج جستجو برای: urban transportation networks

تعداد نتایج: 639481  

2016
Bo - Kui Chen Ya - Chun Gao Wen - Ting Li

Traffic networks and communication networks, the two integral parts of urban infrastructure, have many common characteristics. For example, they both are carriers for transporting agents, as traffic network is a carrier for running vehicles and communication network for transmitting the information packages. Besides, in both networks, the transportation efficiency and congestion problems are cr...

2002
Hong YUAN Huapu LU

This paper first studies the definition and connotation of transportation efficiency. From the viewpoint of different groups participating in urban transportation systems, different system functions and targets required by each group are analyzed. Then the corresponding system targets and evaluation rules required by the administrator are mainly studied. Four primary aspects which have great im...

Guiding vehicles to their destination under dynamic traffic conditions is an important topic in the field of Intelligent Transportation Systems (ITS). Nowadays, many complex systems can be controlled by using multi agent systems. Adaptation with the current condition is an important feature of the agents. In this research, formulation of dynamic guidance for vehicles has been investigated based...

2017
Yu Sun Yin Cui Zhimei Tao

The economic, social and environmental benefits generated by the use of urban public transportation infrastructure constitute a complex dynamic urban public transportation infrastructure utilization benefit system. This paper evaluates the coupling coordination among these three benefits taking four Chinese autonomous municipalities as an example. These four cities have large-scale urban public...

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...

2007
Atulya Nagar Hissam Tawfik

This paper presents an approach for analysing and prototyping urban road network routes based on multiple criteria, such as spatial quality, transportation cost and aesthetics, in order to evaluate the quality of people’s use of road networks. A prototype is developed to analyse routes and accessibility in road layouts from a number of design and user related perspectives. A case study is used ...

Journal: :Physical review letters 2013
Lucas Lacasa Jesús Gómez-Gardeñes

We propose a new measure to characterize the dimension of complex networks based on the ergodic theory of dynamical systems. This measure is derived from the correlation sum of a trajectory generated by a random walker navigating the network, and extends the classical Grassberger-Procaccia algorithm to the context of complex networks. The method is validated with reliable results for both synth...

Journal: :CoRR 2011
Sonic H. Y. Chan Reik V. Donner Stefan Lämmer

Urban road networks have distinct geometric properties that are partially determined by their (quasi-) two-dimensional structure. In this work, we study these properties for 20 of the largest German cities. We find that the small-scale geometry of all examined road networks is extremely similar. The objectsize distributions of road segments and the resulting cellular structures are characterise...

2007

Project Summary The recent loss of lives, and traffic jams stretching for tens of miles as hurricanes Rita and Katrina approached the Gulf Coast demonstrate the enormous difficulty of evacuating urban areas. Mass evacuations are among the most difficult problem areas in Transportation Science because they violate key assumptions underlying traditional theories, e.g., Wardrop equilibrium among s...

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