GPA参加方公共采购实体性质研究

GPA文本对公共采购实体没有统一的界定,只用“政府目的”框定了采购实体的范围,致使GPA参加方在加入谈判时会对采购实体产生争议。我国自2007年启动加入GPA谈判以来,国有企业一直是各方焦灼的热点。本文通过分析美国、欧盟和韩国等GPA参加方公共采购实体的边界,并从设立依据、采用形式和政府控制这3个方面分析其共同特性,探讨了公共采购实体的法人性质,以期为我国开放政府采购市场谈判提供崭新的参考视角。     

政府采购对外开放与社会政策功能之间的关系研究

GPA是政府采购国际开放协议,原则上对各国把政府采购作为宏观调控工具持否定性态度,对保护政府采购市场的歧视性购买提出诸多的限制措施。但是,GPA参加方利用狭小的法律空间,保留了一定的政府采购社会政策功能。本文将以GPA参加方的出价清单为基本素材,分析GPA参加方如何融合政府采购对外开放与政府采购社会政策功能之间关系,实现在GPA的框架下适当保留本国的政府采购社会政策功能,以期为我国加入GPA之后相关功能制度设计提供参考。     

GPA出退价判断标准之解读

《政府采购协议》(GPA)是WTO政府采购领域的国际贸易协议.本文详细解析了WTO、GPA文本和案例中对出退价标准的界定,通过比对研究,分析了GPA出退价标准的差异及产生原因,进而为我国GPA出价提出建议.     

典型GPA参加方政府采购市场开放度研究

本文构建了政府采购市场开放度评价指标体系,通过测算典型GPA参加方的政府采购市场开放度,初步衡量GPA参加方"本土偏好"程度,为定量评估GPA规则的有效性提供数据支撑,为我国加入GPA出价谈判提供参考.     

典型GPA参加方政府采购市场开放度研究

本文构建了政府采购市场开放度评价指标体系,通过测算典型GPA参加方的政府采购市场开放度,初步衡量GPA参加方"本土偏好"程度,为定量评估GPA规则的有效性提供数据支撑,为我国加入GPA出价谈判提供参考.     

可从GPA参加方获得的采购规模的测算模型研究

本文构建了可从GPA参加方获得的采购规模的影响指标体系,提出了一种简化的测算方法模型,以我国可获得采购规模为例对测算模型进行了应用.该模型可用于分析GPA参加方采购市场的开放情况,评估GPA协议的有效性等.     

三维标注信息的管理方法研究

针对三维标注存在的“刺猬”现象,提出了一种基于关联关系图的三维标注信息管理思想.通过将标注信息关联的零件特征用图结构进行表示,以关联关系图为单位对标注信息进行显示和分类.研究了标注信息图的定义、建立方法和关联关系图的搜索算法,基于UG/NX7.5平台和VC++语言开发了原型软件,通过实例验证了该方法的可行性和实用性.     

基于实体-关系模型的标准元数据关系研究

本文梳理了编目学中“关系”的发展历程,结合实体-关系模型,分析标准文献包含的实体、属性,并基于实体间的关联关系和属性关系,开展标准元数据关系研究,同时提出下一步应用方向,包括加强实体关系抽取技术研究、构建标准标签集、开展知识链接研究等。     

利用关联关系的标准件参数化设计方法

分析了产品几何建模的参数化设计方法,提出了一种基于关联关系的标准件参数化设计方法。阐述了参数化设计方法的原理,即采用关联参数建立多个组件间的关联,以实现标准件的参数化设计。利用CATIA平台,给出了圆锥滚子轴承基于关联关系的参数化设计过程,证明了该设计方法的可行性。     

质量功能展开中关联关系确定的RBF方法

针对质量功能展开中存在顾客需求和工程特性之间的关联关系不确定和模糊等特质,提出了质量功能展开中关联关系的径向基函数(Radial Basis Function,RBF)神经网络方法。采用三层RBF神经网络,由质量屋中顾客需求组成RBF神经网络的输入层神经元,中间层选用高斯核函数,工程特性组成RBF神经网络输出层神经元,由顾客需求和工程特性关联关系评价样本集组成网络的训练样本集,通过网络训练的方式来获得最优的顾客需求与工程特性的关联关系。最后,结合天然光采光产品开发,进行了实例分析,说明该方法具有计算速度快,拟合精度高的特点。     

关于政府采购工程服务统计分类体系的初步思考

政府采购数据采集系统的建立和完善是我国政府采购制度的重要组成部分。政府采购客体包括货物、服务和工程三大部分,工程是政府采购的主要支出部分。近年来,我国各项工程建设进入快速发展期,政府采购工程服务额度增长较快,据统计,2009年我国政府采购规模为7413.2亿元,其中,工程类采购规模为3858.4亿元,占政府采购总规模的52.1%,因此,需不断完善政府采购工程服务统计口径,以满足日益增长的政府采购活动的要求。本文以加入GPA谈判为背景,拟从我国与政府采购相关的工程服务分类体系建设与实践活动出发,分析国际、国外与政府采购有关的典型工程服务统计分类体系的基本依据以及与我国政府采购工程管理实践的差异,提出构建一个立体的政府采购工程服务统计分类体系的基本思路。     

Real-time procurement policy with yield and price uncertainty

This study formulates and analyses a procurement model in which a procurer faces both yield and price uncertainty. We propose a simple and effective real-time procurement policy where the decisions are made only based on the current arriving price and inventory level. The only information we need is the first two moments for the random yield rate, and the lower and upper bounds for price. Thus, our policy delivers robust performance to changing yield and price over time. In addition, simple decision rules are summarised for determining the optimal procurement quantity for different cases. Analytical results and numerical experiments are presented to show that the proposed policy achieves a superior performance guarantee.     

Privacy-preserving association rule mining for horizontally partitioned healthcare data: a case study on the heart diseases

In recent years, a trend of electronic health record (EHR) system can be seen increasingly in the hospitals, which has generated huge amount of electronically stored data of patients. Association rule mining technique is very helpful in the numerous applications of healthcare (e.g., correlation between disease and symptoms, disease and offering effective treatment and predicting risks of disease based on the historical data, etc.). The data collected by an EHR system are very important for the medical research. Currently, a patient health report is derived on the basis of a physician’s own experience and on the association rule mining results of a local EHR system maintained by a particular hospital. Association rule mining results will be more accurate if the data of all local EHR systems are integrated and association rule mining is performed. Integration of local EHR systems requires the sharing of local EHR data. Sharing of patient records violates the privacy of patients. Hence, medical research is focused on the problem of mining association rules without sharing of local private EHR data. Privacy-preserving distributed association rule mining (PPDARM) solves this issue by mining the association rules while preserving the privacy of patients. In this paper, an approach for the PPDARM is proposed for collaboratively performing association rule mining by all local EHR systems while preserving the privacy. The proposed approach is also analysed with the heart disease dataset.     

Simultaneous planning of the project scheduling and material procurement problem under the presence of multiple suppliers

Simultaneous planning of project scheduling and material procurement can improve the project execution costs. Hence, the issue has been addressed here by a mixed-integer programming model. The proposed model facilitates the procurement decisions by accounting for a number of suppliers offering a distinctive discount formula from which to purchase the required materials. It is aimed at developing schedules with the best net present value regarding the obtained benefit and costs of the project execution. A genetic algorithm is applied to deal with the problem, in addition to a modified version equipped with a variable neighbourhood search. The underlying factors of the solution methods are calibrated by the Taguchi method to obtain robust solutions. The performance of the aforementioned methods is compared for different problem sizes, in which the utilized local search proved efficient. Finally, a sensitivity analysis is carried out to check the effect of inflation on the objective function value.     

A fault analysis for health impact assessment: procurement,competence, expectations,and jurisdictions

This paper describes and analyses failures in the health impact assessment process of five different major international projects owned by various multinational consortia. The objective is to improve the process. The paper examines how the consortia approached the issue of procurement of consultancy services, and the competence with which consultancy companies offering such services respond. It looks at issues of jurisdiction over management and content and the ethics and expectations of baseline studies. Finally, it offers solutions to some of the challenges described.