基于多Agent的旅游电子商务系统的UML建模

基于多Agent的旅游电子商务系统,利用Agent技术,能够根据用户的需求和偏好,主动、智能和协作地从Internet和知识库中收集各类信息,并对收集到的信息进行过滤、管理和反馈,形成针对不同用户定制的个性化旅游线路.研究了该系统的多Agent体系结构,并通过扩展UML建立系统的静态结构和动态模型,从而提高系统的文档化、可视化和标准化,保证系统的可靠性和可复用性.     

我国场（厂）内机动车辆法规标准体系现状与发展思考

本文介绍了我国场车的法规标准体系,建立了我国场车标准化体系框架及主要内容,并从加紧培养标准化人才、引导企业参加标准化工作、加快制修订目前急需的相关标准等各方面,提出了推进我国场车标准化体系建设需要的具体发展策略。     

国内外食品接触材料标准及法规概述

本文比较了国内外食品接触材料相关标准及法规现状,阐述了食品接触材料相关法规及其添加剂检测标准现状,并对食品接触材料的研究方向及我国食品接触材料标准体系的发展趋势进行了展望。     

Reinforced masonry beams under shear load – Proposals for future designs / Bewehrte schubbeanspruchte Mauerwerksbalken – Vorschläge für zukünftige Bemessungen

This article is written against the backdrop of the work of the European standardisation committees on the amendment of EN 1996‐1‐1 [N 4] which will also exert an influence on the design of reinforced masonry in Germany. This paper focusses on the design approaches of DIN EN 1996‐1‐1 for untensioned reinforced masonry beams under shear load in the ultimate limit state (ULS). Proposals are made to discuss their revision. The contents of E DIN 1053‐3 [N 3] and of the final draft of the guideline ”Flat Lintels” [7] are taken into account.     

Environmental over enthusiasm

India needs large dams for water storage, hydropower and flood control. It also needs long-distance inter-basin water transfers. However, India has a complex and strict environmental regulatory system which ignores a developing economy's needs and peoples' aspirations and is often impractical. This is used by activists to thwart infrastructure building, and, when faced with development slowdown, the government tries to thwart the laws they themselves have made. India's food, water and energy security, economic, and poverty-alleviation plans are in jeopardy unless environmental regulators realize that the regulations are being misused and that environmental over-enthusiasm is benefiting neither development nor the environment.     

稳步推进长江流域综合管理的思考

在分析国外流域管理发展历程与现状的基础上,介绍了流域综合管理的概念、内涵、目标和任务。针对长江流域涉水事务管理现状和存在问题,从健全管理法规、创新管理体制、建立管理机制、完善管理制度、加强执法监督、提升管理能力等六个方面提出了推进长江流域综合管理的对策和措施。     

浅析水法规中一般法理要务

本文根据一般法理学要务分析水法规的研究对象和体系、研究的方法论、基本特征、法律要素,阐述法理要务是水法规的理论基础和出发点。     

Proposal for design rules of axially loaded CFRP strengthened cold formed lipped channel steel sections

Carbon fiber reinforced polymer (CFRP) composites are considered to have high performance and potential for use in strengthening , retrofitting and for the rehabilitation of structural sections. In this paper, design procedures are proposed for the axial load capacity of cold formed steel lipped channel columns strengthened with carbon fiber reinforced polymer (CFRP). For the purpose of validation, the results are based on the proposed design equation from the North American specification for the design of cold-formed steel structural members (AISI-2007) and Euro code for cold-formed members and sheeting (EC3-EN1993-1-3:2006) are compared against the experimental test data. The test results showed that the capacity of the columns are close to the theoretical values predicted by the AISI-2007 and EC 3 provisions. Some tested specimens showed reduced capacity and premature failure due to peeling and debonding of the CFRP from the steel. Various experimental investigations are suggested for future work to further validate and update the design equations. From the experimental studies, it has been observed that there is significant increase in strength due to CFRP strengthening.     

Determination of Ethyl Carbamate in Sake Using Headspace Solid Phase Microextraction

An analytical method for the determination of ethyl carbamate in alcoholic beverages has been developed and optimized. A combination of headspace solid phase microextraction (HS‐SPME), as the extraction technique, and GC/MS, as the determination technique, was utilized. Analytical grade ethyl carbamate dissolved in ethanol solution was analyzed to determine the optimum analytical conditions. Ethyl carbamate‐d₅ was added as an internal standard. The following HS‐SPME conditions were investigated: type of stationary phase of the fibre, ethanol content, sample volume and extraction time. The optimized procedure showed that the detection limit, relative standard deviation, and recovery were 6.7 μg/L, 0.4–2.0%, and 103.6–107.6%, respectively. The precision of this new method was equivalent to previous analyses. Finally, the developed method was applied to the analysis of ethyl carbamate in sake.