基于Agent计算机支持的协同教学与学习环境

从Agent的基本概念、性质、结构等入手,讨论了基于Agent计算机支持的协同教学环境、学习环境,旨在研究实现网上协同教学、学习的技术,并投入实际应用.     

计算机支持的协同钻井工程设计系统模型研究

针对钻井工程设计具有群体性、分布性和协作性等特点,提出在计算机网络环境下,运用CSCW和Agent技术构建计算机支持的协同钻井工程设计系统。该系统可为钻井工程优化设计提供一个网上多群体协同设计的共享环境。详细描述了系统的结构模型﹑Agent的结构与通信机制以及用户管理与访问控制模型。     

计算机支持的协同教学系统研究

首先分析了计算机支持的协同教学的基本模式,然后给出了一个计算机支持的协同教学系统的总体设计,最后探讨了实现中的一些关键技术。实现了把Agent和计算机支持的协同工作技术应用于远程教学系统中。     

计算机支持的协同教学系统研究

首先分析了计算机支持的协同教学的基本模式,然后给出了一个计算机支持的协同教学系统的总体设计,最后探讨了实现中的一些关键技术.实现了把Agent和计算机支持的协同工作技术应用于远程教学系统中.     

基于Agent的协同远程教学模型

利用网络进行远程教学有很多优点.文章讨论如何把Agent和计算机支持的协同工作技术应用到远程教学中以增强教学效果.在多Agent通信语言KQML的基础上,提出了基于Agent的协同远程教学模型,并阐述了在此模型下协同远程教学的工作过程.     

基于Multi-Agent技术的个性化协同学习系统的研究与实现

计算机支持的协同学习是对传统教学方式的改革,可实现跨越时间和空间的教育过程,受到了越来越多研究者的关注.本文针对现有协同学习系统中普遍存在的智能性与个性化不足的问题,提出了个性化学习和联盟式协同学习的新方法,并且开发一个基于多Agent技术的个性化远程协同学习环境.     

基于Multi-Agent图案协同设计多维感知模型研究*

分析了计算机支持的协同工作（CSCW）感知研究现状,回顾了Agent技术的发展,研究了Agent技术与CSCW感知问题的契合点,并将Agent技术成功地应用到CSCW的智能感知研究和实践中,提出了基于MultiAgent的图案协同设计多维感知模型MMAMA。从而使感知具有了一定的智能性,同时提高了协同感知能力和协同工作效率。     

基于Multi-Agent图案协同设计多维感知模型研究

分析了计算机支持的协同工作（CSCW）感知研究现状,回顾了Agent技术的发展,研究了Agent技术与CSCW感知问题的契合点,并将Agent技术成功地应用到CSCW的智能感知研究和实践中,提出了基于Multi-Agent的图案协同设计多维感知模型MMAMA。从而使感知具有了一定的智能性,同时提高了协同感知能力和协同工作效率。     

连锁零售供应链多级库存协同决策研究

针对连锁零售供应链多级库存资源的动态优化配置问题,提出了在上层对库存策略和下层对物流分配方案协同寻优的多级库存双层规划模型。借鉴细粒度模型遗传算法的遗传操作具有局部性的特点,模拟微观群体交互作用的局部性,基于细粒度模型遗传算法的Agent群体行为优化算法和基于复杂适应系统涌现机理的协同决策机制,进行连锁零售供应链多级库存协同决策研究。通过算例实验对模型的有效性进行了验证。仿真实验结果表明,通过连锁零售供应链微观个体Agent的群体行为优化,从系统工程的角度,实现了连锁零售供应链多级库存的动态资源优化配置和信息共享,降低了多级库存管理与运营的总成本。     

基于Agent的网络协同设计系统

计算机支持协同设计是目前研究热点之一。结合基于Web和基于Agent的两种不同协同设计模式的优缺点,提出了一个混合模式的网络协同设计系统。给出了系统结构,就关键技术问题进行了讨论,指出了系统今后的研究方向。     

New quadratic models for the maximum weighted cut problem

New quadratic models are proposed to improve the upper-bound estimates in the maximum weighted cut problem. They are found by two original methods for deriving redundant quadratic constraints. A well-known linear model is shown to follow from the models proposed. Recommendations on how to develop its strengthened analogs are given. This study is partially sponsored from the grant UM2-2574-KV-03 (CRDF Cooperative Grants Program). __________ Translated from Kibernetika i Sistemnyi Analiz, No. 1, pp. 63—75, January–February 2006.     

Problems of discrete optimization: Challenges and main approaches to solve them

This paper briefly reviews the current state of the art in the field of discrete optimization problems. Emphasis is on the generalization of the experience gained at the V. M. Glushkov Institute of Cybernetics of the National Academy of Sciences of Ukraine in research and development of solution methods and software for various classes of complicated discrete programming problems. The study was partially sponsored by the grant UKM2-2812-KV-06 (SRDF Cooperative Grants Program). __________ Translated from Kibernetika i Sistemnyi Analiz, No. 4, pp. 3–25, July–August 2006.     

Functionally redundant constraints for Boolean quadratic-type optimization problems

A method of construction of functionally redundant quadratic constraints is proposed for Boolean quadratic-type optimization problems. The method is based on an extension of a set of Boolean variables and formation of functionally redundant constraints that relate the initial and added variables. Examples of improvement of Lagrangian dual quadratic estimates obtained by using the constructed redundant constraints are given. This work was carried out thanks to partial financial support under grant UM2-2547-KV-03 (CRDF Cooperative Grants Program.). __________ Translated from Kibernetika i Sistemnyi Analiz, No. 6, pp. 168–172, November–December 2005.     

An approach to determining Shor’s dual quadratic estimates

For a general quadratic problem, an analog is formulated as a homogeneous quadratic problem. The estimates ψ* constructed based on Shor’s dual quadratic estimates for these problems are proved to be equal. It is shown that, for the case of a homogeneous quadratic problem, finding ψ* is reduced to an unconstraint minimization problem for a convex function. The study was partially sponsored by the grant UKM2-2812-KV-06 (CRDF Cooperative Grants Program). __________ Translated from Kibernetika i Sistemnyi Analiz, No. 2, pp. 89–99, March–April 2008.     

LP-oriented upper bounds for the weighted stability number of a graph

Upper bounds for the weighted stability number of a graph are considered that are based on the approximation of its stable set polytope by linear inequalities for odd cycles and p-wheels in the graph. Algorithms are developed for finding upper bounds on the basis of solution of LP problems with a finite number of inequalities produced by the shortest path algorithm for a special graph. The results of test experiments are given for graphs with several hundred or thousand vertices. This work was partially financially supported by the CRDF Cooperative Grants Program under grant UKM2-2812-KV-06. Translated from Kibernetika i Sistemnyi Analiz, No. 1, pp. 157–170, January–February 2009.     

Development of the open system for the automation of scientific research in image understanding Black Square, Version 1.2

The automated software system Black Square, Version 1.2 is described. The system is intended for the automation of image processing, analysis, and recognition. It is an open system for generating new knowledge: objects, algorithms of image processing, recognition procedures originally not intended for image processing, and methods for solving applied problems. The system combines the features of information retrieval, reference, training, and computing systems. This work was partially supported by the Russian Foundation for Basic Research, project nos. 04-07-90187 and 05-07-08000; by the INTAS grant no. 04-77-7067; by the Cooperative grant “Image Analysis and Synthesis: Theoretical Foundations and Prototypical Applications in Medical Imaging” within agreement between Italian National Research Council and Russian Academy of Sciences (RAS); by the RAS Program “Fundamental Science to Medicine”; and by the Program of Scientific Research of the Presidium of RAS “Mathematical Modeling and Intellectual Systems.”     

A fuzzy case based reasoning approach to value engineering

This paper is intended to assist the experts during the creativity phase of value engineering through utilizing the past experiences and avoid them in a specific domain from repeating the same experience. To this purpose, a general fuzzy case based reasoning (CBR) system is developed. Our system benefits from a fuzzy clustering model for fuzzy data to facilitate case retrieval and reduce the time complexity. The inherent analogical nature of a case-based reasoning (CBR) model and its integration with fuzzy theory would facilitate access to more precise and systematically classified information during a VE workshop. In order to test the performance of the proposed system, it is applied to suburban highway design data extracted from National Cooperative Highway Research Program (NCHRP) Report 282.     

多级安全数据模型的主键漏洞问题及消除方法

随着多级安全数据库研究和实际应用的深入,对多级安全数据模型提出了新的要求。文章对现有多级安全数据模型具有的主键漏洞问题进行了详细分析和描述,并针对MLR模型提出了相应的改进方法。     

The risk-sensitive index and theH 2 andH ∞, norms for nonlinear systems

In this paper we study two measures of the size of systems, namely, the so-calledH ₂ and H norms. These measures are important tools for determining the influence of disturbances on performance. We show that the risk-sensitive index on an infinite time horizon contains detailed information concerning these measures, via small noise and small risk limits.The authors wish to acknowledge the funding of the activities of the Cooperative Research Centre for Robust and Adaptive Systems by the Australian Commonwealth Government under the Cooperative Research Centres Program. The first author was partially supported by AFOSR F49620-92-J-0081, ARO DAAL03-92-G-0115, and NSF DMS-9300048.     

Remote sensing of climate change,long-term monitoring of air pollution and stone material corrosion in Estonia

The Fifth National Communication Under the Framework Convention on Climate Change covered the policies and activities in Estonia of the period 2006–2009. Climate change and air pollution cause significant damage, especially to various materials. Worldwide, 387 objects belong to the United Nations Educational, Scientific and Cultural Organization (UNESCO) World heritage list, including the Old Town of Tallinn. The International Cooperative Programme on Effects on Materials, including Historic and Cultural Monuments (ICP Materials) is an ongoing research programme in the framework of which air pollution and the effect of climate on the corrosion of various natural and synthetic materials, including historical and cultural monuments, is studied. So far, the studies have shown that even though air pollution has continuously declined in Estonia, no significant reduction in corrosion has been noticed on the displayed limestone sample plates at the Lahemaa air monitoring station. On the contrary, in 2005–2006, the corrosion loss of limestone was greater compared with that in 1987–2003. It could be explained partly by changing environmental conditions but another possible explanation is that the Portland limestone as a stone material has a different quality.