نتایج جستجو برای: core cities

تعداد نتایج: 268605  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه زنجان - دانشکده مهندسی برق و الکترونیک 1390

جهت انتقال داده ها در شبکه های کنونی، به طور گسترده از شبکه های مبتنی بر ip استفاده می شود. عیب استفاده از این نوع شبکه ها این است که سرویس دهی به در خواست ها در آنها، بر اساس طبقه بندی داده ها صورت نمی گیرد. از طرف دیگر، تکنولوژی های سوییچینگ نظیر atm وframe relay این مزیت را دارند که کیفیت سرویس تضمین شده را همراه با یک تکنولوژی ارسال سریعتر داده فراهم می کنند. به منظور استفاده از مزایای هر ...

Journal: :ISPRS international journal of geo-information 2021

China has entered an era of rapid high-speed railway (HSR) development and the spatial structure urban agglomerations will evolve in parallel with evolution HSR network. In this study, we explore how network evolves at regional local scales. Existing research into structures mostly been carried out a scale, therefore failed to reveal connections within city. work, progress science by exploring ...

Journal: :Agriculture 2023

Farmland transfer (FT) is the key to achieving moderate agricultural scale management in China. Clarifying spatial pattern of FT important improve strategies. In this study, multinomial logit model was used reveal Liaoning Province, Northeast On basis, reasons for its formation were discussed, and suggestions proposed. According statistical results, 39.7% sample peasant households participated ...

Journal: :Tijdschrift voor economische en sociale geografie 2023

In this paper, we build on a long research effort aimed at identifying the specific conditions, functional and structural characteristics of urban areas, that produce different levels residential segregation across cities. We explore in Poland's 87 largest cities, cities with more than 50,000 residents, by measuring indices dissimilarity relating to socio-professional status. then proceed exami...

Journal: :Journal of urban economics 1981
G K Ingram A Carroll

"Using published census data, metropolitan area population and employment statistics are constructed for several large Latin American cities in 1950, 1960, and 1970, and compared to similar statistics from selected North American cities. The Latin cities are experiencing decentralization of population and some decentralization of employment. Overall population density patterns of large Latin ci...

Journal: :Humanities & social sciences communications 2023

Abstract As an important supplement to “location space”, “flow space” has become trend in urban network research. At present, the theoretical basis and empirical research of structure from perspective are not completely clear. Based on spatial system framework, this paper comprehensively studies structure, pattern development mode Liaoning Province China by using multivariate data flow. The res...

2016
Justin L. Herrmann William D. Shuster Audrey L. Mayer Ahjond S. Garmestani Dustin L. Herrmann

Shrinking cities are widespread throughout the world despite the rapidly increasing global urban population. These cities are attempting to transition to sustainable trajectories to improve the health and well-being of urban residents, to build their capacity to adapt to changing conditions and to cope with major events. The dynamics of shrinking cities are different than the dynamics of growin...

Journal: :international journal of health policy and management 0
michael k. gusmano school of public health, rutgers university, new brunswick, nj, usa victor g. rodwin the hastings center, garrison, ny, usa

over half of the world’s population lives in cities and united nations (un) demographers project an increase of 2.5 billion more urban dwellers by 2050. yet there is too little systematic comparative research on the practice of urban health policy and management (hpam), particularly in the megacities of middle-income and developing nations. we make a case for creating a global database on citie...

2017
Yuming WANG Xinxin WANG Fangxia GUAN

BACKGROUND Creating healthy cities promotes socio-economic development, thus, the creation of such cities has been receiving more attention from the Chinese government and the Chinese people. In the current study, the intention was to conduct a comprehensive evaluation of the creation of healthy cities in Henan province in central China. METHODS We randomly selected 18 cities (7 healthy citie...

2014
Cammie Chaumont Menéndez Harlan Amandus Parisa Damadi Nan Wu Srinivas Konda Scott Hendricks

BACKGROUND Driving a taxicab remains one of the most dangerous occupations in the United States, with leading homicide rates. Although safety equipment designed to reduce robberies exists, it is not clear what effect it has on reducing taxicab driver homicides. FINDINGS Taxicab driver homicide crime reports for 1996 through 2010 were collected from 20 of the largest cities (>200,000) in the U...

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