L—fuzzy拓扑空间中的I型强连通性

利用准闭集和Ｐ远域引入和研究了Ｌｆｕｚｙ拓扑空间中的Ｉ＊型强连通性概念，它保持了一般拓扑空间连通集的若干重要性质．     

MULTIPLE CRITERIA DECISION MAKING： DISCORDANT PREFERENCES AND PROBLEM DESCRIPTION

There are many practical decision problems where decision makers＇ preferences may be inconsistent and contradictory. In this paper, new methods for ordering and classifying multi-attribute objects by discordant collective preferences are suggested. These methods are based on the theory of multiset metric spaces. The proposed techniques are applied to ranking companies and a competitive selection of projects, which are estimated by several experts upon multiple qualitative criteria.     

Robust model predictive control of continuous uncertain systems*

The authors concern robust model predictive control for linear continuous systems with polytopic uncertainties and input constraints. At each sampling time, a piecewise constant control sequence is obtained by solving a set of linear matrix inequalities. The sufficient conditions on the existence of the model predictive control are given, and the robust stability of the closed-loop systems is guaranteed. A simulation example illustrates the efficiency of the proposed method.     

An approximate analytical solution to the ultrafiltration profile in a hemodialysis process between parallel porous plates

In a hemodialysis process, the blood that runs through straight channels exchanges substances with the dialysate through a semi-permeable membrane. The waste products, such as urea and creatinine, are therefore removed from the plasma by the membrane. In the analysis of this process, determination of the ultra-filtration profile along the porous membrane surface remains a difficult problem. In this work, an analytical solution to the derivation of such a profile was detailed, and the feasibility of this solution was discussed. The ultra-filtration profile was found to be in a cosine shape.     

新阻燃剂磷酸三(2-羟基)丙基酯锑的合成及性质

将环氧丙烷与磷酸反应,首次合成磷酸三(2-羟基)丙基酯,再将其与三氧化二锑反应,得出一种新型锑-磷复合阻燃剂——磷酸三(2-羟基)丙基酯锑;研究了反应体系酸度、反应温度及反应时间等因素对反应产率的影响;制得的产品经化学分析、红外光谱等测试,证明了化合物的结构为CH_3CH(OH)CH_2OP(O)[OCH_2CHO(CH_3)]_2SbOH。将其添加于氯丁橡胶及环氧树脂中,当该阻燃剂用量达到12.5％时,阻燃制品氧指数分别可达到38,39;实验结果表明,将反应体系pH控制在5.5左右、反应温度100℃、反应5h时,可制得阻燃抑烟性能优良的产品,产率达到89％。     

A Contact and Non-Contact Hybrid Profilometer with Large Range

A novel hybrid instrument of contact and non-contact measurement with large range is developed, and both measurement systems are based on a Linnik interference microscope and on white-light interference measuring techniques. The ambiguity presented in conventional monochromatic interferometers is not present in the contact and non-contact measurement, and they have a virtually unlimited unambiguous range. For the contact measurement, the vertical measuring range is ±5 mm with a resolution of 1 nm and the horizontal measuring range is ±25 mm in x-range and y-range with a resolution of 1.25 μm; for the non-contact measurement, the vertical measuring range is ~5 mm with a resolution of 1 nm and the horizontal resolution better than 0.5 urn.     

On the Hejek-Renyi Inequality

In this paper we give an elementary and unified proof of the Hajek-Renyi inequality, and get a general version of this inequality which not only covers the all known results but also derives some new results.     

对我国发行地方政府债券的思考

我国《预算法》明确规定地方政府不能发行债券进行公用事业建设项目的融资,但是随着经济发展和改革深入,当时制定法律所考虑的因素已发生了变化,我们应该重新审视地方政府债券发行条件,对是否允许发行地方政府债券作出判断,并作出决策,以顺应改革及经济发展的需要。     

Best weight pattern evaluation based security constrained power dispatch algorithm

This paper presents a methodology which determines the allocation of power demand among the committed generating units while minimizes number of objectives as well as meets physical and technological system constraints. The procedure considers two decoupled problems based upon the dependency of their goals on either active power or reactive power generation. Both the problems have been solved sequentially to achieve optimal allocation of active and reactive power generation while minimizes operating cost, gaseous pollutants emission objectives and active power transmission loss with consideration of system operating constraints along with generators prohibited operating zones and transmission line flow limits. The active and reactive power line flows are obtained with the help of generalized generation shift distribution factors （GGDF） and generalized Z-bus distribution factors （GZBDF）, respectively. First problem is solved in multi-objective framework in which the best weights assigned to objectives are determined while employing weighting method and in second problem, active power loss of the system is minimized subject to system constraints. The validity of the proposed method is demonstrated on 30-bus IEEE power system.     

Internet QoS: Architectures, Strategies and Mechanisms

As an extensive study of Internet QoS, a framework for emerging Internet QoS strategies is presented. Integrated service (Intserv/R SVP), Differe ntiated service (Diffserv), MPLS, and QoS routing, are overviewed. The key issue s and relationship of these QoS architectures are discussed. Some algorithms in IP QoS implementation and unsolved problems are also studied in this paper. Furt hermore, a new strategies of incorporating Intserv with Diffserv to archive end - to-end QoS is proposed. It is also discussed why MPLS and QoS routing are introduced into this framework, how they differ from and relate to other sch emes and where they fit into the Diffserv architecture. The timesc ales of different QoS strategies are also studied and some proposals for Qo S routing deployment are given.