Evaluating the Core Competence of Chinese Security Companies：A Three-dimensional Model

In this paper, the core competence of Chinese security companies is analyzed first. Then a three-dimensional evaluation model is proposed based on systematic thought to evaluate the core competence of security companies, as well as method： the optimized point. The projection analysis of this model is further discussed.     

A logistic two-population mortality projection model for modelling mortality at advanced ages for both sexes

In the current literature, numerous mortality projection models have been proposed and tested, but in general they have been designed for and applied to mainly ages below 90. As medical advances are being shifted to older ages over time and there is a rapid growth in the number of centenarians, there is a need to expand the modelling to older ages. We propose a logistic two-population mortality projection model for the death rates at ages 80 to 100+ for both sexes. We apply this model and its extensions to high quality old-age mortality data of Belgium, Sweden, Switzerland, and the UK and produce decent model performance in both mortality fitting and forecasting. The model structure also provides a reasonable way to close off the life table, which is supported by both theoretical arguments and empirical evidence.     

城市湿地保护区重建模式--以佛山市三水区云东海湿地为例

湿地是城市地区最能体现生物多样性的自然生态环境,不仅能满足城市居民对舒适性环境的需求,对城市可持续发展也具有十分重要的意义.以云东海湿地为例,提出城市湿地保护区恢复与重建必须从目标定位开始,科学分区,调整土地利用方式,形成保护区内生态平衡体系.并相应地提出了城市湿地保护措施.     

可视化仓库管理系统的设计

介绍了可视化仓库管理系统的概念以及系统的配置方案，并就系统的功能和特点进行了详细描述。     

Projection properties of certain three level orthogonal arrays

Two orthogonal arrays based on 3 symbols are said to be isomorphic or combinatorially equivalent if one can be obtained from the other by a sequence of row permutations, column permutations and permutations of symbols in each column. Orthogonal arrays are used as screening designs to identify active main effects, after which the properties of the subdesign for estimating these effects and possibly their interactions become important. Such a subdesign is known as a ``projection design'. In this paper we have identified all the inequivalent projection designs of an OA(27,13,3,2), an OA(18,7,3,2) and an OA(36,13,3,2) into k=3,4 and 5 factors. It is shown that the generalized wordlength pattern criterion proposed by Ma and Fang [23] can distinguish between most, but not all, inequivalent classes. We propose an extension of the Es² criterion (which is commonly used for measuring efficiency of 2-level designs) to distinguish further between the non-isomorphic classes and to measure the efficiency of the designs in these classes. Some concepts on generalized resolution are also discussed.     

湿地生态系统服务市场机制研究

湿地破坏的根本原因在于人们片面追求短期利益而忽视长期利益、追求个人局部利益而忽视社会整体利益。湿地生态系统服务市场机制能够促进湿地保护、恢复和重建。在湿地动植物产品、生态旅游和污水处理等方面，湿地生态系统服务市场具有很大发展潜力。明晰产权是建立市场机制的基础，湿地资源的产权界定要依据其外部性和公共物品的特性。土地利用者应比较湿地开发与保护的净效益选择净效益最大的方案。政府可采取适当的激励措施减少目前许多湿地产品和服务市场仍存在的缺失或缺陷，为生态系统服务市场的建立和发展提供条件。     

Austerity and Private Debt

This study provides empirical evidence that the costs of austerity crucially depend on the level of private indebtedness. In particular, fiscal consolidations lead to severe contractions when implemented in high private‐debt states. Contrary, fiscal consolidations have no significant effect on economic activity when private debt is low. These results are robust to alternative definitions of private‐debt overhang, the composition of fiscal consolidations, and controlling for the state of the business cycle and government debt overhang. I show that deterioration in household balance sheets is important to understand private debt‐dependent effects of austerity.     

变迁中的我国产品质量监督管理——制度与模式的考察

文章在系统阐述我国产品质量监管制度现状的基础上，通过回顾我国产品质量监管制度的演变过程与借鉴国外模式的成功经验，比较分析得出我国产品质量监管的问题及解决问题的基本思路，并对今后我国产品质量监管发展趋势做出预测。     

浅谈土地测量的面积计算方法

讨论高斯投影变形对土地测量面积计算的影响,以及土地测量面积计算的几种方法,并以实例说明这些方法所带来的土地测量面积计算的差异。     

行业创业活跃度的投影寻踪聚类研究——基于山西省2007-2011年数据的实证分析

创业者的行业选择不仅关涉创业活动的成败,而且也会影响到区域的产业成长性。在对测量区域行业创业活跃度的两个指数IPEEI和IIEEI进行定义基础上,测算了山西2007-2011年间19个行业的行业创业活跃度指数。同时运用投影寻踪聚类方法,将山西19个行业创业活跃度划分为5类。