for their constructive suggestions on an earlier draft of this report. They bear no responsibility for remaining shortcomings. The views expressed in this discussion paper are those of the authors and are not necessarily those of the trustees, officers, or staff members of The Brookings Institution. ABSTRACT Single-mother families' success in moving from welfare to work under the 1996 federal w...

Taking the Pearl River-West River Economic Belt as an example, based on five development principles, this study explores its high-quality level and evolving trends from 2015 to 2020 using evaluation systems, entropy-weighted method, Gini coefficient method. The results show that: (1) of urban economy in has increased steadily year by year, with a relatively slow growth rate. Except for openness...

Hierarchy is implicit in the very term city. Cities grow from hamlets and villages into small towns and thence into larger forms such as ‘metropolis’, ‘megalopolis’ and world cities which are ‘gigalopolis’. In one sense, all urban agglomerations are referred to generically as cities but this sequence of city size from the smallest identifiable urban units to the largest contains an implicit hie...

Detailed studies on the spatiotemporal patterns of urban agglomeration in the Middle Yangtze River Basin (MYRB) are rare. This paper analyzed the spatiotemporal patterns of urbanization in the MYRB using multi-temporal remote sensing data circa 2000, 2008 and 2016 integrated with geographic information system (GIS) techniques and landscape analysis approaches. A multi-level analysis of the rate...

China is the largest developing country worldwide, with rapid economic growth and the highest population. Light pollution is an environmental factor that significantly influences the quality and health of wildlife, as well as the people of any country. The objective of this study is to model the light pollution spatial pattern, and monitor changes in trends of spatial distribution from 1992 to ...

Regional and local authorities have the obligation to design air quality plans and assess their impacts when concentration levels exceed the limit values. Because these limit values cover both short- (day) and long-term (year) effects, air quality plans also follow these two formats. In this work, we propose a methodology to analyze modeled air quality forecast results, looking at emission redu...