战备物资合同储备合谋防范策略研究

战备物资委托企业合同储备过程中存在多重委托代理关系,结合博弈理论,分析军方-军代表-代储企业三方损益,考虑合谋惩罚因素和名誉损失惩罚因素。在分析合谋形成条件的基础上,建立战备物资合同储备预防合谋机制模型,得出混合战略均衡解,模型的均衡解反映了代储企业与军代表选择违规获取合谋收益的最佳概率,以及军方监管机构选择监督的均衡概率,得出监管力度和监管成本的合理组合,实现监管效益最大化。通过实例仿真讨论模型在不同参数下的合谋条件,识别合谋监管的关键变量,为完善战备物资合同储备监管机制提供参考。     

我国地方政府户籍制度改革的案例比较分析

在中央稳妥推进户籍制度改革的总要求下,各地户籍制度改革的力度及方式并不相同,其效果也呈现较大差别。对地方户籍制度改革的典型实践做出对比分析,有助于认识各地户籍制度改革实践的优劣及户籍制度改革应遵循的一般规律,从而为中国的户籍制度改革提供理论借鉴和现实参考。基于此,选取成都、重庆、郑州、中山4个城市的户籍改革案例进行比较研究,从改革措施、改革绩效等方面进行对比分析。认为现有地方政府户籍制度改革的自利性倾向较强,以人为本的价值理性诉求较为缺失。因此,要推进以“人”的城镇化为核心的户籍制度改革,同时降低户籍制度改革的相关风险,地方政府应充分尊重转户者意愿,并严格执行城市分类管理原则,在国家顶层设计方面,应重点着力于政绩评价体制以及社会保障体制方面改革。     

Privileged policies versus lack of care and engagement: the lives of retired veteran cadres in a residential community of Jinan Municipal Party Committee,China

Abstract

The Retirement System for Veteran Cadres (Lixiu) is one part of China’s dual-track retirement system. According to some official policies, retired veteran cadres should enjoy a number of privileges in terms of pension, health care, use of government vehicle, housing and peculiar political rights. Based on participant observation and semi-structured interview, the study looks into the life of the population in a residential community of Jinan Municipal Party Committee, Shandong Province. By incorporating Maslow’s hierarchy of needs theory, the study finds that in China, services for retired cadres still fall short of the expectations of policy. Establishment of ‘big communities’ with the idea of ageing-in-place is suggested.     

面向机械行业的产品信息协同管理集成平台

针对现阶段多数PIM( product information management),ERP( enterprise resource planning)系统中BOM( bill of material)系统无法真正满足机械行业产品管理的现状,提出一种面向机械行业建立BOM产品协同管理平台的解决方 法。以某机械制造企业为研究背景,设计了BOM产品协同管理平台的体系结构;详细设计了其功能模型及数据库结构, 并在此基础上开发了基于B/S( browser/server)结构的BOM协同管理平台系统软件。通过企业相关人员使用测试的反 馈效果来看,该系统平台不仅稳定可靠,而且有效提高了企业生产管理的效率和质量。将协同管理技术运用到产品信息 管理中,开发面向机械行业的产品信息协同管理平台,可以有效提高金业产品信息化管理水平,具有重要的研究价值和 实用意义。     

Sexual dysfunction predicts depressive symptoms during the first 2 years postpartum

Background

The association between sexual function and depression has yet to be examined in a prospective cohort study with prolonged postpartum follow-up.

On the consistency and the robustness in model selection criteria

Abstract

In the model selection problem, the consistency of the selection criterion has been often discussed. This paper derives a family of criteria based on a robust statistical divergence family by using a generalized Bayesian procedure. The proposed family can achieve both consistency and robustness at the same time since it has good performance with respect to contamination by outliers under appropriate circumstances. We show the selection accuracy of the proposed criterion family compared with the conventional methods through numerical experiments.     

浅议医学院校化学教学改革的必要性

为了提高高等医学院校学生学习化学的兴趣，培养学生宽厚的知识面。笔者以医学院校的特点及化学教学中普遍存在的问题为出发点，讨论了如何通过教学改革的方法在基础教学中缩短教与学、理论与实践的距离感，激发学生学习化学的积极性、主动性，并结合自身教学经验对医学院校化学教学改革的必要性进行详细论证。     

Strategic corporate sustainability performance of Chinese state-owned listed firms: A meta-frontier generalized directional distance function approach

Although sustainability recently became a key factor in social science, little progress has been made toward improving the measurement of sustainability performance. This paper proposes composite corporate sustainability performance indicators using a meta-frontier generalized directional distance function. This advanced approach can measure the efficiency of corporate social responsibility activities by benchmarking, while simultaneously considering industrial heterogeneities, using the meta-frontier approach. First, we propose the concept of a meta-frontier generalized directional distance function. Second, several standardized composite indicators related to corporate sustainability performance are developed. The meta-frontier directional distance function is estimated by solving a series of data envelopment analysis models. Chinese state-owned listed enterprises are then empirically examined using the proposed model. We find significant group heterogeneities in terms of corporate sustainability performance. We also derive some policy implications using the empirical results.     

A Note on Estimation of a Distribution Function in a Nonparametric Set-up Using Stein’s Shrinkage Estimation Technique

Based on Stein’s famous shrinkage estimation of a multivariate normal distribution, we propose a new type of estimators of the distribution function of a random variable in a nonparametric setup. The proposed estimators are then compared with the empirical distribution function, which is the best equivariant estimator under a well-known loss function. Our extensive simulation study shows that our proposed estimators can perform better for moderate to large sample sizes.