广州可持续发展多目标决策支持算法研究

以广州市为例,采用广州市历史统计数据,对将来的发展进行预测。在此基础上,探讨人口、资源、环境与经济之间的关系,建立了可持续发展多目标决策支持模拟系统。模型的计算结果可供政府及高、中层决策者制定政策时作参考。     

水库调度智能决策支持系统ROIDSS研究

本文采用决策支持系统、神经网络、知识工程等有关理论与方法，初步建立了ＰＫ地区水库调度智能决策支持系统ＲＯＩＤＳＳ，文中介绍了ＲＯＩＤＳＳ的总体设计及其决策支持方式，为ＰＫ地区水库调度决策提供了一种有效的决策支持环境。     

河北省可持续发展决策支持系统研究

阐述了河北省可持续发展评价指标体系及其评价方法，分析了建立河北省可持续发展决策支持系统（HBSDDSS）的意义、系统目标及其设计原则；最后给出了HBSDDSS的总体框架。     

不同决策支持层次对投资风险决策的影响

本研究在着重考察决策支持信息的结构层次、决策的知识结构以及它们之间交互作用对决策质量的影响。围绕投资风险决策问题运用不同决策支持信息层次，利用Q分类技术和多维量表分析法(MDS)，对决策的知识结构进行获取和分析，以决策的认知偏差的大小作为决策质量的指标，从而考查决策支持信息对于降低决策的认知偏差的作用，以及决策的知识结构和决策支持层次的交互作用。结果发现，决策支持信息能够将决策任务中所包含的信息更加明确、更加结构化地展示在决策的面前，有利于决策更加理性地作出决策判断，降低决策的认知偏差，提高决策质量；决策的知识结构以及知识结构和支持层次之间的交互作用对决策质量也有一定影响，但并未达到显。     

区域环境影响评价体系研究和实践

区域环境影响评价一般是指应用科学技术的原理和方法，揭示该区域环境中正在发生的和即将发生的与发展过程的自然作用和人类活动及其相互影响的规律。应用环境过程系统动力学方法建立系统动力学模型，对该区域环境巾进行的人类活动计划或规划实施后的影响做出客观评价和科学的预测，以满足区域可持续发展原则的要求，并为制定、修改和完善区域发展计划或规划提供科学依据。进行区域环境影响评价的目的是为了确保或满足研究区域内的社会、经济和环境协调发展，使该区域达到可持续发展战略规划的总体要求。     

分数阶非线性隔振系统的超谐波共振与周期运动转迁规律分析

针对具有非线性和黏弹性的隔振系统采用分数阶非线性Zener模型对其本构关系进行表征。将分数阶项等效成三角函数的形式，采用高阶谐波平衡法求解系统的稳态响应并结合多种方法对结果进行比较，数值模拟系统在低频区的动力学响应，采用Floquet理论对系统分岔类型进行判定，揭示了分数阶项对系统动力学响应的影响。研究结果表明，高次超谐波不仅存在跳跃现象且相邻次数超谐波转迁过程中存在周期运动多样性。数值模拟过程中还发现系统存在周期运动和混沌共存的现象，并总结了多态共存区域及其相邻区域的运动规律。     

卫星推进系统仿真平台架构设计与实现

针对卫星推进系统设计周期长、成本高、故障复现难度大等特点,文章利用数值仿真的方法构建了一种推进系统仿真平台。该仿真平台由卫星模拟系统、环境动力学模拟系统、数据处理系统和仿真时间管理系统四部分组成,四个模拟系统完成对卫星、空间环境、以及地面遥测遥控的模拟。在该平台下对推进系统进行了总体仿真。该仿真平台能够为推进系统故障复现与诊断提供支持。     

企业实施MRPⅡ的可行性评估指标体系

运用多项目决策与分析方法，提出了企业实施ＭＲＰⅡ的可行性评估指标体系，共计６个方面、３０条指标，并对每项指标的含义及其定量计算方法作了详尽说明，最后给出了实例研究。     

长三角城市树木标准体系构建研究

本文通过对长三角城市树木标准进行收集、梳理和分析，构建了长三角城市树木标准体系框架，形成了标准明细表，为长三角园林绿化主管部门开展区域联动、技术共享等工作提供数据支持。并从标准化的角度，提出推进长三角园林绿化发展的标准化建议，为制定促进长三角园林绿化高质量发展的决策提供参考。     

复杂产品虚拟样机综合集成型决策支持系统研究

现有常规决策方法和决策支持环境难以对复杂问题进行有效的决策支持和求解，复杂产品虚拟样机即属于该类问题，其决策支持环境的设计是虚拟样机工程需要解决的问题之一。在分析当前各种决策支持系统的特点并与综合集成型决策支持系统进行比较后，提出了只有构建综合集成型决策支持系统才能有效地解决复杂产品虚拟样机设计中的决策支持问题。从虚拟样机决策求解的过程分析了系统的需求，建立了B/S架构的、基于移动Agent技术的综合集成型决策支持系统，并阐明了系统的组织结构和功能，对系统实现的关键技术、仿真、信息和知识的综合集成进行了深     

Insertion of triangulated surfaces into a meccano tetrahedral discretization by means of mesh refinement and optimization procedures

In this paper, we present a new method for inserting several triangulated surfaces into an existing tetrahedral mesh generated by the meccano method. The result is a conformal mesh where each inserted surface is approximated by a set of faces of the final tetrahedral mesh. First, the tetrahedral mesh is refined around the inserted surfaces to capture their geometric features. Second, each immersed surface is approximated by a set of faces from the tetrahedral mesh. Third, following a novel approach, the nodes of the approximated surfaces are mapped to the corresponding immersed surface. Fourth, we untangle and smooth the mesh by optimizing a regularized shape distortion measure for tetrahedral elements in which we move all the nodes of the mesh, restricting the movement of the edge and surface nodes along the corresponding entity they belong to. The refining process allows approximating the immersed surface for any initial meccano tetrahedral mesh. Moreover, the proposed projection method avoids computational expensive geometric projections. Finally, the applied simultaneous untangling and smoothing process delivers a high‐quality mesh and ensures that the immersed surfaces are interpolated. Several examples are presented to assess the properties of the proposed method.     

Certification Institutions Expected to Update and Transfer Information on Present Standards

Standards are the basis for production enterprises to organize production, ex-factory inspection, trade (delivery) and technical exchanges, product certification, quality arbitration and supervision.……     

Flow calorimeter for enthalpy increment measurements on condensed gases

A flow calorimeter for enthalpy increment measurements on condensed gases is presented. A better knowledge of the properties of the liquefied natural gas is needed, and therefore a liquid loop has been designed for our flow calorimeter. The fluid loop in the calorimeter is designed in order to avoid the two-phase region, since two phases would give compositional disturbances in the measurements. The avoidance of the two-phase region is made possible by increasing the pressure of the test fluid after the measurement section, then heating the fluid at super-critical pressure past the critical point. Finally, the fluid is throttled to the low-pressure gas state at the inlet condition of the compressor that circulates the fluid. To perform the pressure increase, a new cryogenic pump has been designed. To evaluate the new equipment, measurements were taken on liquid ethane over the temperature range 146–256 K at pressure between 0.9 and 5.1 MPa.     

Refrigerators Enter a New Era of Health Preservation Frestech initiates the establishment of China's first standard for household sterilization refrigerators

On November 30, 2007, the China Association for Standardization (CAS) held a press conference at Beijing Diaoyutai State Guest House. Leaders from the China Household Electric Appliance Research Institute, the China Household Electric Appliance Association, and the China Consumers' Association attended and made speeches.……     

Optimum-Simulation von Ernteprozessen

Zusammenfassung Bei der Gestaltung von Ernteprozessen — beispielsweise des Prozesses Mähdrusch, Körnertransport und -abnahme — als transportverbundene Fließarbeitsverfahren mit mindestens zwei verschiedenen Arbeitsmitteln gibt es einen großen Optimierungsspielraum. Solche Prozesse sind mehrstufige Bedienungsprozesse mit gemischter Anordnung der Bedienungseinrichtungen. Außerdem besitzen sie stark ausgeprägte räumliche Aspekte. Es wird vor allem gezeigt, welche Merkmale solcher Prozesse in Simulationsmodellen abgebildet sein müssen, welche Zielgrößen in Abhängigkeit von welchen Einflußgrößen unter Berücksichtigung welcher Prozeßbedingungen ermittelt werden sollten und wie der Bewertungsprozeß zur Ermittlung der gewünschten Informationen gestaltet werden muß.     

A study of centrifugal cast high boron high speed steel

In the present study a high‐boron high speed steel (HSS) roll material was designed. Many expensive alloy elements have been substituted by cheap boron alloy, and high‐boron high speed steel roll has been manufactured by centrifugal casting method. The microstructures, mechanical properties and wear resistance of centrifugal casting high‐boron high speed steel roll have been investigated by optical microscopy (OM), scanning electron microscopy (SEM), and X‐ray diffraction (XRD) analysis, hardness test, impact test and wear test. The results indicated that the solidification microstructures of high‐boron high speed steel roll consisted of M₂(B,C), (W,Mo)₂(B,C), M₃(B,C), M₂₃(B,C)₆ type borocarbides and martensite, a small amount of retained austenite. Borocarbides were continuously distributed over the grain boundary. After quenching from 1050 °C, local broken network appeared in partial borocarbides, and fine secondary borocarbide precipitated from the matrix. After tempering from 525 °C, the amount of precipitated borocarbide increased significantly. After heat treatment, the hardness of high‐boron high speed steel roll excelled 60 HRC, and its impact toughness excelled 8.0 J/cm². The single groove steel rolling amount of high‐boron high speed steel rolls increases by 500% than that of bainite cast iron roll, when the rolls are used in K₁ mill housing of bar mill.     

Brainstorming for ISO Strategy 2016-2020

正Responding to ISO’s appeal for survey for the to-be-developed ISO Strategy Plan for 2016-2020,SAC hosted a special workshop over the needs and comments of various fi elds on June 8 in Beijing.The workshop was attended by ISO President-elect and Ansteel General Manager Zhang Xiaogang,SAC Vice-Administrator Yu Xinli,and 30 experts from     

CNAS Passes APLAC's PTP Review

正The review group of Asia Pacific Laboratory Accreditation Cooperation(APLAC)carried out a 4-day peer review of the proficiency testing provider(PTP)for China National Accreditation Service for Conformity Assessment(CNAS)from July 28 to 31,2014.CNAS passed the PTP review with excellent performance.Two senior peer reviewers of APLAC made a comprehensive,rigorous and detailed review of CNAS’s PTP accreditation activities,and made the on-spot inspection of the review groups in Shanghai and Shenzhen respectively.     

新闻(英文)

正China and Greece Sign the Standardization Cooperation Agreement Witnessed by Chinese Premier Li Keqiang and Greek Prime Minister Antonis Samaras,AQSIQ Minister Zhi Shuping and ELOT Chairman and Executive Director Angelos Tolkas signed the SAC-ELOT Standardization Cooperation Agreement.The Agreement is one of the critical cooperation documents signed during Li Keqiang’s visit in Greece,encouraging China and Greece to