نتایج جستجو برای: central cities

تعداد نتایج: 521447  

Journal: :Chaos 2006
Paolo Crucitti Vito Latora Sergio Porta

Centrality has revealed crucial for understanding the structural properties of complex relational networks. Centrality is also relevant for various spatial factors affecting human life and behaviors in cities. Here, we present a comprehensive study of centrality distributions over geographic networks of urban streets. Five different measures of centrality, namely degree, closeness, betweenness,...

Journal: :PLoS ONE 2008
Georgiy Bobashev Robert J. Morris D. Michael Goedecke

Mathematical models that describe the global spread of infectious diseases such as influenza, severe acute respiratory syndrome (SARS), and tuberculosis (TB) often consider a sample of international airports as a network supporting disease spread. However, there is no consensus on how many cities should be selected or on how to select those cities. Using airport flight data that commercial airl...

2010
René Véron

Development and environmental issues of small cities in developing countries have largely been overlooked although these settlements are of global demographic importance and often face a “triple challenge”; that is, they have limited financial and human resources to address growing environmental problems that are related to both development (e.g., pollution) and under-development (e.g., inadequ...

Journal: :Japan architectural review 2023

Old Indian cities are often less accessible due to temporal restrictions and ever-rising pedestrian volume. In this research, the accessibility of footpath-level walkability condition old core has been assessed through Architectural Planning Research, considering 32 footpath stretches in Central Kolkata, India, as a case. The research considered 3 data sets, (a) 257 experts' opinions about univ...

Journal: :Annals of GIS 1999
Fahui Wang Yanchun Meng

Based on the subdistrict (jie-dao) data from 1982 and 1990 national population censuses, this research employs two approaches to investigate the urban population change patterns in Shenyang, China. The density function approach examines what function best characterizes its density distribution, how the density pattern has changed over time, how many centers can be identified in the city, and ho...

2011
Edward Glaeser

This is an enjoyably readable celebration of the city by a prominent urban economist, until now known more for heavy theory than writing for a popular audience. The basic target of the book is the anti-urbanism that abounds in the popular imagination, in the national politics of many countries, and even in certain corners of the academic community. Glaeser synthesizes the theory and evidence th...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1390

introruction khawf in(iran)-herat and mazaresharif and shirkhan bandar in (afghanistan)-dushanbe in (tajikistan)_(kirgizstan)-kashghar in(china) project railway network is under construction that it is as a significant corridor for revitalizing silk road corridor in the region .at the present there are three different gauge in the region central asia with 1,520 mm gauge and turkey-islamic repu...

2015
Jonathan Egbe

The issues of community health relative to the impact which waste management experts on the wellness of the community is central to the overall capacity of the community. This paper therefore correlates waste management with the promotion of community health for community development goals in urban cities. The gap in the study is that, the quantum of waste generated in urban cities constitutes ...

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