城市滨水旧住区问题分析及对策研究——以上海市长风新村街道沿河旧住区为例

一、引言 进入21世纪以来,城市滨水地区由于其悠久的发展历史、丰厚的文化底蕴和重要的城市区位,成为政府、公众和开发商关注的焦点,因此,滨水地带的复兴成为中国城市发展的中心议题之一.     

Labor force participation and juvenile delinquency in Taiwan: a time series analysis

This study examines the null hypothesis of Granger no-causality between labor force participation (LFP) and juvenile delinquency in Taiwan. In order to explore this issue more thoroughly, this study adopts the approach proposed by Toda and Yamamoto (1995, Journal of Econometrics, 66(1–2), 225–250). It uses official time-series data provided by the Government of Taiwan. After estimating both a four- and five-variable VAR system, one that substitutes both male and female LFP rates for the aggregate LFP rate, the primary findings of this study reveal the following: The higher the past juvenile crime rate, the lower the future aggregate and female LFP rate will be. In addition, the higher the past male LFP rate, the higher the future juvenile crime rate will be. These findings are quite robust in terms of different lag-length structures.

现代企业演化理论:方法论、核心概念及其解释逻辑

基于奥地利学派的知识理论,企业演化的方法论应是个体与环境的互动主义。现代企业演化理论的核心概念是企业家精神、适应性学习和资本结构等,以此为基础建立的启发式的企业演化逻辑,可用于考察企业在不同的演化环境下所采取的不同内外部协调机制(紧密或松散)、学习模式以及知识类型(默会或编码)。此外,企业学习过程和选择过程是交互作用的,企业的创新活动必须考虑时间因素,这将使企业演化变得更加复杂。     

Transparency and Resource Allocation of Grassroots Nonprofits in China

VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - Organizational transparency has become a prominent concern for the nonprofit sector as it expands globally. Transparency...     

近代广东商业人群在广西的分布面及其梯度差考详——粤港商业经济对广西经济辐射研究之二

文章从中国近代史上城镇经济主体——商业经济的角度切入,运用各类历史资料,分区逐县地确证广东商业人群以及所造成的“无东不成市”格局在全广西的分布范围,并揭示其在广西不同地域的程度等差和梯度分布状态。从而,以原始的生活场景原生态地呈现出粤港澳地区对广西经济辐射由东而西逐步推进、由城市而圩市逐层次渗透的基本节奏和客观规律。     

Quantile regression for large-scale data via sparse exponential transform method

In recent decades, quantile regression has received much more attention from academics and practitioners. However, most of existing computational algorithms are only effective for small or moderate size problems. They cannot solve quantile regression with large-scale data reliably and efficiently. To this end, we propose a new algorithm to implement quantile regression on large-scale data using the sparse exponential transform (SET) method. This algorithm mainly constructs a well-conditioned basis and a sampling matrix to reduce the number of observations. It then solves a quantile regression problem on this reduced matrix and obtains an approximate solution. Through simulation studies and empirical analysis of a 5% sample of the US 2000 Census data, we demonstrate efficiency of the SET-based algorithm. Numerical results indicate that our new algorithm is effective in terms of computation time and performs well for large-scale quantile regression.     

Instrumental variable based variable selection for generalized linear models with endogenous covariates

We study the variable selection problem for a class of generalized linear models with endogenous covariates. Based on the instrumental variable adjustment technology and the smooth-threshold estimating equation (SEE) method, we propose an instrumental variable based variable selection procedure. The proposed variable selection method can attenuate the effect of endogeneity in covariates, and is easy for application in practice. Some theoretical results are also derived such as the consistency of the proposed variable selection procedure and the convergence rate of the resulting estimator. Further, some simulation studies and a real data analysis are conducted to evaluate the performance of the proposed method, and simulation results show that the proposed method is workable.     

Policies for Recruiting Talented Professionals from the Diaspora: India and China Compared

Despite the continuous asymmetrical power relations between the Global North and South, the “global race for talent” is no longer a privilege enjoyed only by developed countries. Comparative analysis of policy content and effectiveness has attracted increasing interest. The examination of policy initiatives resulting in return migration of highly‐skilled migrants from the Global North to the Global South, however, remains inadequate. In this article, we provide a comparative analysis of policies targeting high‐level Chinese and Indian professionals including full‐time returnees. Two key differences in policy instruments and outcomes in the two countries are identified and they have implications for migration policies in other countries in the Global South and North.     

农民工参与城镇医疗保障的行为研究

文章利用农民工调查数据,研究了农民工参与城镇医疗保障的影响因素以及城镇医疗保障对农民工医疗支出决策和医疗费用的影响,考察城镇医疗保障制度是否解决了农民工的医疗保障问题。研究结果发现,自评健康状况很好和很不好的农民工都不愿意参与城镇医疗保障,城镇医疗保障既存在逆向选择,也没有有效分散农民工的医疗风险。农民工是否有医疗支出和医疗费用的多少主要取决于疾病严重程度,农民工参与城镇医疗保障对此没有显著性影响。因此,现行农民工城镇医疗保障制度还没有起到为农民工提供足够的医疗保障作用。     

西夏文《经史杂抄》考源

西夏文《经史杂抄》一书出土已近百年,因首尾皆佚,内容芜杂,此前一直未获全文解读,出处亦不明。本文指出此书主要依据敦煌汉文文献《新集文词九经抄》编译而来,是目前所知西夏人编译的唯一一本通篇征引汉文俗文学的作品。对它的解读可以解决夏译汉籍悬而未决的最后一个谜团,从而为研究西夏教育和文化交流提供一份宝贵的材料。