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The rapid expansion of self-employment has accompanied the rise of a market economy in urban China. According to the National Bureau of Statistics of China, the state-owned enterprises' share of the country's GDP has declined from over 90% in 1978 to below 50% in 2005. Urban entrepreneurship and self-employment is an emerging force that is shaping the(More)
Using microdata from the U.S. Survey of Business Owners (SBO) released in 2012, this study examines transnational activities of immigrant-owned businesses in three aspects: whether they export, outsource jobs, and have overseas establishments. Results show that immigrant-owned firms have significantly higher tendency to be involved in transnational economic(More)
Immigrants continue to settle in metropolitan areas across the United States and bring significant changes to various urban labor markets. The current Great Recession which officially 2010) further intensified the debate on immigration. It is important to understand how immigrants fared through this economic downturn and their evolving employment patterns(More)
Data from analgesic clinical trials have characteristics such as ordered categorical longitudinal responses with repeated measures, delay of effect with respect to analgesic plasma concentration, and right-hand censoring of response due to remedication. In order to determine the concentration-effect relationship of such data, we propose convolving an(More)
Public sector employment of immigrants can increase their economic assimilation and potentially improve their treatment by government. Yet, as we show using Census data from 1990, 2000, and 2009-11, immigrants are substantially under-represented in federal, state, and local governments. To understand why, we use logit analysis for federal and for state and(More)
In the development of an analgesic product, placebo-controlled clinical trials in patients with defined pain are used to study the dose-time-response relationship of the drug. In such trials, the response is usually an ordered categorical variable with longitudinal and subject-specific repeated measurements. The primary causal variables are time and(More)
(1) Theory and knowledge of how demography relates to urban development and public policy; (2) Using census data for analysis of local and regional changes; (3) Effective strategies for analysis and presentation of data; (4) Efficient communication of research findings. This graduate-level course addresses the role of demography in urban development,(More)
This study traces the geographic evolution of minority-owned businesses in sub-metropolitan areas across the United States and investigates potential factors that underlie their intra-metropolitan location shift. Using data from the 2002 and 2007 Survey of Business Owner, this study addresses these questions for Asian-, Black-and Hispanic-owned enterprises(More)