An interactive agent-based system for concept-based web search

Search engines are useful tools in looking for information from the Internet. However, due to the difficulties of specifying appropriate queries and the problems of keyword-based similarity ranking presently encountered by search engines, general users are still not satisfied with the results retrieved. To remedy the above difficulties and problems, in this paper we present a multi-agent framework in which an interactive approach is proposed to iteratively collect a user's feedback from the pages he has identified. By analyzing the pages gathered, the system can then gradually formulate queries to efficiently describe the content a user is looking for. In our framework, the evolution strategies are employed to evolve critical feature words for concept modeling in query formulation. The experimental results show that the framework developed is efficient and useful to enhance the quality of web search, and the concept-based semantic search can thus be achieved.     

Negotiating Dialogue Games

Recently in the field of agent communication, many authors have adopted the view of interaction as a joint activity regulated by means of dialogue games. It is argued in particular that this approach should increase the flexibility of dialogues by allowing a variety of game compositions. In this research note, we present a framework suited to this feature. A preliminary attempt to capture the negotiation phase (which allows agents to agree upon the dialogue game currently regulating their conversation) is discussed.     

生长抑素及其类似物的标记技术的发展

生长抑素受体显像剂是临床上应用最为普遍的放射性多肽类受体显像剂。用多种放射性同位素^111In、^90Y、^6Ga、^68Ga、^64Cu或是用^99Tc^m、^188Re以及卤族同位素^123I、^18F等对奥曲肽及其类似物进行标记得到的放射性多肽药物，已广泛用于临床显像。介绍了生长抑素类似物及标记技术的发展，对目前临床上比较成熟的生长抑素类显像剂做了综述和比较。同时介绍了目前在SST类似物开发领域及生物行为研究领域中的最新发展动态。     

腐植酸造粒粘合剂的研究

给出了用不同粘合剂制备颗粒状腐植酸的试验结果。研究表明，腐植酸钠作为造粒的粘合剂，具有良好的综合指标。当其加入量为腐植酸含量的４％￣５％时，颗粒状腐植酸制成品抗冲击指数达到８２％以上，磨损指数低于８．８％。     

有关行为主义人工智能研究综述

通过与传统人工智能的比较，介绍了基于行为的智能模拟技术的发展及现状，并详细评述了行为主义人工智能的研究方向以及在研究过程中涉及到的前沿技术，最后给出了基于行为主义人工智能构建智能主体系统的设计原则。     

Negotiation Agents that Make Prudent Compromises and are Slightly Flexible in Reaching Consensus

The contribution of this work is designing and developing enhanced market-driven agents with the flexibility to (1) respond to changing market conditions, and (2) raise and relax trade aspirations. Previous theoretical analyses have shown that market-driven agents ( MDA s) make prudent compromises by reacting to changing market situations by taking into account factors such as competition, deadlines, and trading options. This work augments the design of an MDA with three fuzzy decision controllers that guide the agent in (i) relaxing trade aspiration in face of intense negotiation pressure, and (ii) raising trade aspiration in extremely favorable markets. Results from extensive simulations conducted using an implemented testbed suggest that when compared to MDA s, agents in this work achieved (1) higher success rates in reaching deals, (2) higher average utilities, and (3) higher expected utility.     

钢铁精炼晶粒细化一步法初探

将自我研发从粉煤灰中分离提取微珠为主的新型钢铁用精炼晶粒细化复合材料，加入熔融钢铁液中，辅以惰性气体或机械搅动使之在数分钟内与钢液迅速反应，取样、铸坯、检测．精炼脱碳效果明显，晶粒细化等级提高，一步法实现了钢铁精炼脱碳、晶粒细化．在国内外尚属首次用此材料与方法试验研究．     

武钢第一炼钢厂钢包喷补工艺的应用

以碱性喷补料的损毁机理为根据，讨论了该类型喷补料的颗粒分布和结合理论，根据操作条件提出优化方案选取相应的产品，从而获得较好的使用效果。     

有机铬类调剖堵水剂室内研究

对有机铬类选择性调剖堵水剂的性能进行了评价,通过改变该调剖剂的温度、pH值、矿化度,对该调剖剂的抗温性和稳定性进行了综合评价,结果表明该调剖剂适合现场生产需要.通过岩心流动实验,研究了渗透率不同的岩心的堵水情况.研究结果表明:用该调剖剂适时地进行多轮次调剖堵水,能取得控水稳油、发挥高含水期生产潜力的理想效果.     

聚脲改性聚酰胺多胺环氧氯丙烷涂布抗水剂的研究

制备了高含固量，稳定性好的聚脲改性聚酰胺多胺环氧氯丙烷，通过实验研究了其作为涂布抗水剂的应用工艺及作用机理，分析了多种因素对产品性能和贮存稳定性的影响。