一阶超对策模型中结局偏好认知信息集结的模式识别法

针对一类一阶n人超对策模型．提出了一种结局偏好认知信息的集鲒方法．首先通过对单一局中人中不同专家给出的对其他局中人结局偏好信息的不同认知进行关联分析，确定出专家的权重评价值．进而运用模糊模式识别原理，通过建立一个非线性规划模型，给出了一种新的超对策结局偏好认知信息的集结方法．最后。用一个数值例子对文中所提方法进行了说明．     

离散互联模糊系统的分散控制及稳定性条件

本文针对一类离散互联模糊系统,提出了一种新的模糊分散控制器的设计方法,给出了控制系统稳定的充分条件,应用Lyapunov函数法和线性矩阵不等式理论证明了模糊分散控制系统的稳定性.所提出的模糊分散控制方法和稳定性条件克服了已有模糊分散控制算法的保守性.仿真结果进一步验证了所提的模糊分散控制理论的正确性和方法的有效性.     

基于偏好信息的实数型不确定交通安全测度研究

由于交通安全问题的复杂性和交通安全测度者认识的不确定性,在实数型不确定交通安全测度过程中可能会给出不同形式的偏好信息。针对互反判断矩阵、模糊互补判断矩阵、残缺互补判断矩阵和混合判断矩阵4种测度对象偏好信息,分别采用特征向量法、最小方差法、残缺互补判断矩阵的线性方程组法和混合判断矩阵的线性目标规划法计算出相应的排序向量,然后采用WAA算子合成出每个交通安全测度对象的综合测度值,并排序。算例研究证明该方法的有效性和易操作性。     

区间数多指标决策问题的模糊层次分析法

分别给出了刻画区间数大小比较的相对优势度的概念和模糊互补判断矩阵排序的一种新方法，利用区间数间的两两比较，构造了评价指标相对于决策总目标的模糊互补判断矩阵，以及各区间数可行方案相对于各给定评价指标的模糊互补判断矩阵。然后根据模糊互补判断矩阵的排序方法，分别求出了各评价指标的权重，以及各区间数可行方案相对于各给定评价指标的重要程度的取值。在此基础上，对各区间数可行方案进行层次总排序，该方法简单、实用，所需信息少。     

基于遗传算法的潜射反舰导弹综合作战效能分析

提出了直接根据单指标相对隶属度的模糊评价矩阵，构造层次分析法中的判断矩阵用以确定各评价指标权重的方法，给出了用遗传算法检验和修正判断矩阵的一致性和计算判断矩阵各要素的权重的模糊综合评价模型，对潜射反舰导弹作战效能进行了综合评估和排序．实例表明，该方法简便通用，计算结果较为客观和稳定．     

模糊信息的信息量及其计算

定义了有关信息的基本概念，给出了一种关于位置的模糊信息即闭区间[a，b]上模糊数的信息量计算公式，讨论了模糊数信息量的性质，最后介绍了在模糊层次分析的比较判断矩阵构造中的算例。     

一种面向患者门诊预约满意的决策方法

针对患者给出关于医生和就诊时段的偏好的门诊预约决策问题,给出了一种门诊预约决策方法。首先依据每个患者给出的预约偏好构建其针对医生的偏好向量和针对就诊时段的偏好矩阵,然后分别计算出患者针对医生和就诊时段的满意度,进而将两者集结得到患者在每个就诊时段内接受各医生服务的满意度,进一步地,以所有患者满意度之和最大为目标,构建了门诊预约决策的优化模型,通过模型求解得到最终的预约决策结果。最后,通过一个算例证明了所提出方法的实用性和有效性。     

考虑用户共识的包装机械色彩意象模糊优选方法

目的提高包装机械色彩意象评价的科学性和客观性。方法考虑到包装机械色彩意象评价中的用户认知模糊性和差异性问题,利用梯形模糊数表达用户感性偏好,建立包装机械色彩意象模糊评价矩阵,通过构建用户感性评价共识度模型,对用户评价结果进行共识度评判与处理,提高用户感性意象评价的一致性水平。结合逼近理想解排序法和灰关联分析法对包装机械色彩意象评价结果进行排序,实现包装机械色彩方案的模糊评价和优选。结果实例分析表明,用户的认知差异问题切实存在,评价共识度会影响包装机械色彩意象评价结果。结论通过将用户共识纳入包装机械色彩意象评价过程,可以减小用户认知差异带来的影响,提高包装机械色彩意象评价质量。     

一类离散非线性时滞互联系统的模糊分散控制

本文对一类离散非线性互联时滞系统,给出了模糊分散状态反馈和基于观测器的分散输出反馈模糊控制方法。设计中,首先采用模糊T-S模型对非线性互联时滞系统进行模糊建模,在此基础上,给出模糊分散状态反馈和基于观测器的模糊分散控制的设计。应用Lyapunov函数方法和线性矩阵不等式方法给出和证明了模糊分散控制系统稳定的充分条件。仿真结果进一步验证了所提出的模糊分散控制方法的有效性。     

切削过程再生颤振的模糊稳定性分析

在机床切削颤振分析中首次考虑了模糊不确定性因素的影响，利用模糊数学分析方法详细论述了切削过程再生颤振的模糊稳定性分析问题，给出了模糊稳定性极限切削宽度集合的可能性分布及其置信区间表达式，最后依据本文的理论分析，经计算机编程绘制了模糊稳定性图     

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