世界体系中的"华南经济圈"及其参与中国-东盟自由贸易区的优势问题--全球化背景下的华南经济圈研究之一

世界各地的华侨华人经济联系建构了世界华商网络 ,并以此融入世界体系 ,形成了整个“中华经济圈” ;而包括粤港澳台闽桂琼在内的“华南经济圈”则构筑了“中华经济圈”的圆心 ,并维系其经济增长 (“圆周半径”)的动态平衡。“华南经济圈”由闽台经济区、珠江三角洲经济区、环北部湾沿岸经济区和环南中国海经济区所构成 ,它参与中国———东盟自由贸易区的优势主要在于地缘经济优势、特区经济优势和会展经济优势     

Opportunities for woman-initiated HIV prevention methods among female sex workers in southern China

Rapid changes in China over the past two decades have led to significant problems associated with population migration and changing social attitudes, including a growing sex industry and concurrent increases in STIs and HIV. This article reports results of an exploratory study of microbicide acceptability and readiness and current HIV prevention efforts among female sex workers in two rural and one urban town in Hainan and Guangxi Provinces in southern China. The study focused on these women's knowledge and cultural understandings of options for protecting themselves from exposure to STIs and HIV, and the potential viability and acceptability of woman-initiated prevention methods. We report on ethnographic elicitation interviews conducted with women working within informal sex-work establishments (hotels, massage and beauty parlors, roadside restaurants, boarding houses). We discuss implications of these findings for further promotion of woman-initiated prevention methods such as microbicides and female condoms among female sex workers in China.     

Outlier detection and robust variable selection via the penalized weighted LAD-LASSO method

This paper studies the outlier detection and robust variable selection problem in the linear regression model. The penalized weighted least absolute deviation (PWLAD) regression estimation method and the adaptive least absolute shrinkage and selection operator (LASSO) are combined to simultaneously achieve outlier detection, and robust variable selection. An iterative algorithm is proposed to solve the proposed optimization problem. Monte Carlo studies are evaluated the finite-sample performance of the proposed methods. The results indicate that the finite sample performance of the proposed methods performs better than that of the existing methods when there are leverage points or outliers in the response variable or explanatory variables. Finally, we apply the proposed methodology to analyze two real datasets.     

辽宁装备制造业的全新道路

用具有自主知识产权的先进设备装备各个工业部门,是中国发展装备制造业的重要目标,因为重大装备制造业关系国家经济安全,必须要在加大投入、加强研发的基础上提高自主创新的能力,拥有自主知识产权。沈阳机床等一批辽宁装备制造业企业探索出一条成功的自主发展之路。     

Parallels Between Objective Indicators and Subjective Perceptions of Quality of Life: A Study of Metropolitan and County Areas in Taiwan

This study explores the consistency between objective indicators and subjective perceptions of quality of life in a ranking of survey data for cities and counties in Taiwan. Data used for analysis included the Statistical Yearbook of Hsiens and Municipalities and the Survey on Living Conditions of Citizens in Taiwan, both given for the year 2000. The Quality of life was examined in seven domains: medical services, domestic finances, work, education, leisure, public safety, and environmental quality. Subjective and objective rankings for each domain of quality of life for 23 areas (some areas are cities and some are counties) are compared. Analysis by means of nonparametric correlation coefficients indicates that there is no significant correlation between objective indicators and subjective perceptions, except in Education and Environmental Quality. Objective indicators of Environmental Quality (air pollution and garbage) are positively correlated with subjective satisfaction with residential environment. But inexplicably, higher levels of literacy and educational achievement are negatively correlated with satisfaction with the educational system. It may be considered that disparity in either average objective conditions or in average subjective perceptions may not adequately depict quality of life differences.

低生育水平下的生育成本收益研究——来自江苏省的调查

文章应用江苏生育意愿与生育行为调查结果,研究符合二孩生育政策妇女的生育行为、生育计划和生育观念,主要从妇女的角度分析生育威本和生育收益,并应用多元统计分析方法重点分析生育成本对妇女生育计划的影响.研究发现,育龄妇女大多认为满足精神需求是最重要的生育理由,而第二个孩子的养育成本是主要考虑因素.在控制了年龄、受教育程度、居住地、户口性质、婚姻状况、生育观念等特征后,生育的经济成本和心理成本对妇女生育二孩的计划有显著影响.     

广西北部湾经济区文化发展研究

广西北部湾经济区文化发展是作为国家战略的<广西北部湾经济区发展规划>不可缺少的有机部分.根据文化发展理论与区域文化现状,探索适合北部湾城市群文化发展模式,目标是建设一个经济发达、社会文明、文化繁荣的文化城市群.其核心是,共建文化服务体系、共建文化市场体系、共建文化企业体系、共同配置文化资源、共同制定文化政策、共同实行文化体制改革,为国内中西部地区的文化发展起到示范与引领作用.     

A Warning Zone Method for the Multiperiod Cost Variance Investigation Problem

This paper develops a warning zone approach to make variance investigation decisions for a multiperiod process. The assumed cost generation process varies between an in-control and out-of-control state. These states cannot be directly observed, but must be inferred from the reported cost variances. Using the warning zone method of inference, the manager investigates the process whenever an upper threshold is exceeded or a lower threshold is exceeded for two consecutive periods. A four-state Markov chain models the resulting decision process. Steady state probabilities are derived for this chain and are used to obtain explicit formulas for the effectiveness and efficiency of the decision process. These formulas permit computation of the cost savings attainable by the warning zone method. Compared to other decision rules, the warning zone method is much simpler than the theoretically optimal Bayesian revision method, but uses more information than the Markovian control limit method. Numerical comparison of results shows that the warning zone method usually captures most of the available cost savings, even in cases where the Markovian control limit method does not perform well.     

A study of quadratic inference functions with alternative weighting matrices

Quadratic inference function (QIF) is an alternative methodology to the popular generalized estimating equations (GEE) approach, it does not involve direct estimation of the correlation parameter, and thus remains optimal even if the working correlation structure is misspecified. The idea is to represent the inverse of the working correlation matrix by a linear combination of some basis matrices. In this article, we present a modification of QIF with a robust variance estimator of the extended score function. Theoretical and numerical results show that the modified QIF attains better efficiency and achieves better small sample performance than the original QIF method.