ESTIMATION OF SPATIAL ARMA MODELS

Spatial ARMA models are considered using the nonsymmetric half plane ordering on a lattice of data. A method is given for the estimation of the orders and the coefficients of such models under an identifiability condition and the condition that the beat linear predictor is the best predictor in the mean square sense. Under these conditions, the strong consistency of the estimators ia established. The usual methods for ARMA modelling in Time Series Analysis require estimation of the innovations. The method of this paper introduces an inveree model complementary to the original model so that the estimation of the innovations is avoided. This leads to a substantial reduction in the computational complexity in the two-dimensional case.     

网络安全法律的符号学阐释

基于自建语料库,研究发现信息（数据）是美国、中国和欧盟网络安全法律的核心规制对象。网络安全法律及其中的法律术语具有符号学时空性特点。一方面,美国、中国和欧盟在网络安全法律内容及其法律术语阐释方面存在空间性的差异,即在不同的司法管辖区,对网络安全法律以及同一法律术语存在不同的解释项;另一方面,法律术语作为语言符号具有时间性,规范现实空间的传统法律术语已不适应网络时代社会的发展,亟须对其进行重构以适用于网络空间。此外,社会发展、法的发展和各国互联网技术发展水平的不平衡性决定了网络安全法律移植的必要性,而在移植过程中,应充分考虑网络安全法律及其术语的空间性、本国国情以及国外法与本国法之间的兼容性。     

社会共治下的食品企业失信经营问题三方演化博弈研究

针对食品企业失信经营的问题,借鉴日常活动理论,从机会、动机和控制方法三个方面,对企业失信经营进行了分析。在监管机构传统监管与共治监管两种方式下,基于演化博弈方法,构建了食品企业、消费者、监管机构的三方演化博弈模型。依据企业失信经营获利的大小,从博弈均衡上对食品企业失信经营问题进行了研究,并运用Matlab对博弈模型进行了分析验证。通过对两种监管方式的效率和应用范围进行深入分析,研究结果表明处罚和赔偿可有效降低食品企业失信经营的动机;当企业失信经营动机较小时,传统监管方式即可有效威慑食品企业,从而使其选择诚信经营策略;当企业失信动机较大时,即便使用共治监管方式仍无法有效监管食品企业失信经营。     

Closing the Loophole: A Case Study of Organizing for More Equitable and Affordable Access to Health Care in San Francisco

This paper presents in-depth case study of a successful hybrid political and community organizing campaign to ensure equitable access to health care through the perspective of a grassroots San Francisco community-based organization, the Chinese Progressive Association (CPA), which has been organizing low-income Chinese immigrants for over four decades. First, it outlines the Health Care Security Ordinance (HCSO), which, since its passage in 2006, has established a near-universal health care access program, helping to make health care accessible and affordable to individuals living and working in San Francisco. Then it presents the campaign to save the HCSO, focusing on CPA’s participation in the HCSO coalition. Finally, it discusses health care as it relates to the San Francisco’s affordability crisis and the political economic context in which it is taking place. Despite the limitations inherent in small case studies like this one, it nevertheless provides a valuable opportunity to better understand how one politically progressive city attempted to address the problem of grossly inequitable health care access through the lens of community organizing, advocacy, and coalition building. San Francisco, like many major American cities today, is being confronted with rapid gentrification and growing economic inequality—the backdrop to the HCSO. Through innovative experiments in social responsibility like the HCSO, however, the city has made leaps in health care access. It concludes with lessons learned from local organizing and advocacy to save the HCSO as these may inform other local efforts to promote health care for all.     

Welfare Index of Migrant Workers in the Gulf: the Case of Qatar

In December 2010, Qatar won the rights to host the 2022 FIFA World Cup games. The FIFA announcement came with increasing pressure from international human rights organizations, media and other groups for Qatar to reform its labour law, which governs the lives and working conditions of foreign workers in the country. Although Qatar continues to develop and implement major reforms to its labour laws, until now there was no one unique tool based on survey data to evaluate the impact of the government’s policies on guest workers. The objective of this article is to present the Qatar Guest Workers’ Welfare Index (GWWI),¹ a multi-dimensional comprehensive tool based on survey data of migrant workers developed by the Social and Economic Survey Research Institute (SESRI). In addition to assessing and tracking the welfare of this population, the objective of the index is to identify areas of improvement to guide policy formulation.     

两岸青年学生对社会文化集群认知研究

青年学生是两岸文化迈向深度交流的生力军。针对两岸青年学生群体设计的"两岸青年学生对当代社会文化的看法"调查问卷结果发现,两岸青年学生对当代社会文化问题既有趋同认知,也存在着明显的集群差异。以调查问卷和深度访谈为样本,采用统计学、社会学、文化研究等方法,可以发现这种差异的形成既受到两岸经济社会发展差距的影响,也受到两岸文化观念等群体意识差异的影响,其根本原因在于两岸是两个不同的文化意义系统,彼此内部具有不同的集群认知和群体记忆。在全球化语境下,两岸民众应共享中华文化的多元性,在宏观层面实现两岸文化的包容性融合,在微观层面结合青年人的心理和社会状态,在秉承传统文化、正视认知差异、增进两岸交流、加强理论研究、推动协议商签等方面建构起共同文化认知体系的路径。     

An analytical management framework for new product development processes featuring uncertain iterations

This paper presents an analytical framework for effective management of projects with uncertain iterations. The framework is based upon: (1) the combination of two complementary techniques, one focused on improving iterative process architectures, the Design Structure Matrix, and one focused on predicting project performance, the Graphical Evaluation Review Technique; and (2) the introduction of an activity set-based criticality measure. The intent of the framework is to help project managers and researchers identify and evaluate alternative process architectures, in order to help them determine the alternative which best balances risk and other project performance parameters, as illustrated through an example application.     

大学物理实验课程考试改革的探索

论述了在大学物理实验课程的教学过程中把教学效果进行科学量化（考试）的重要性。针对大学物理实验课程考试中存在的问题，根据教育测量的理论，结合大学物理实验课程的教学实际，提出了大学物理实验课程考试改革的具体措施。     

Linear rank tests for censored survival data

We describe a class of rank test procedures for the two-sample problem with right censored survival data. The class of tests is directly generalized from the linear rank tests by assigning each observation a rank according to its corresponding Wilcoxon scores. It allows a flexible choice of score functions, in particular, those powerful against scale differences between the two survival distributions. Monte Carlo simulations have shown that some members of this class have great power in detecting crossing-curve alternatives (alternatives where underlying survival curves cross over). The class also contains tests essentially equivalent to the Gehan-Wilcoxon and the logrank tests.