Agent communication channel based on BACnet

We analyze the common shortcoming in the existing agent MTPs (message transport protocols).With employing the File object and related service AtomicWriteFile of BACnet (a data communication protocol building automation and controlnetworks),a new method of agent message transport is proposed and implemented. Every agent platform (AP) has one specified File object and agents in another AP can communicate with agents in the AP by using AtomicWriteFile service.Agent messages can be in a variety of formats.In implementation,BACnet/IP and Ethernet are applied as the BACnet data link layers respectively.The experiment results show that the BACnet can provide perfect support for agent communication like other conventional protocols such as hypertext transfer protocol(HTTP),remote method invocation (RMI) etc.and has broken through the restriction of TCP/IP.By this approach,the agent technology is introduced into the building automation control network system.     

CuS-poly （N-isopropylacryl-amide-co-acrylic acid） composite microspheres with patterned surface structures： preparation and characterization

N-isopropylacrylamide (NIPAM) and acrylic acid (AA) copolymer microspheres with various compositions were prepared by reverse suspension polymerization technique. The microspheres thus prepared were employed as micro-reactors for the deposition of CuS. In this way, several CuS-P(NIPAM-co-AA) composite microspheres with different surface morphologies were prepared. It was demonstrated that the surface structures of the composite microspheres can be tailored to a certain extent by varying the ratio of the two monomer units in the template (microgels) and/or the amount of CuS deposited. It is in prospect that the inherent advantages of microgel templates (the size, composition, charge nature and density, and crosslinking density could be easily controlled) would make the microgel template method extremely useful in the preparation of composite microspheres with different patterned surface structures.     

气动人工肌肉主动悬架系统的可变自整定离散PID控制

构建以气动人工肌肉为新型执行器的车用主动悬架系统实验平台，为简化的基于1／4悬架模型的主动悬架系统设计了基于DRNN神经网络的可变自整定离散PID控制算法，分析了可变自整定离散PID算法的控制性能，为提高气动人工肌肉主动悬架系统的减震性能提供理论依据。     

移动Agent安全技术的研究

针对现有移动Agent安全系统在大规模开放式网络应用中存在的问题,提出了一种解决移动Agent系统安全性问题的模型———移动Agent安全管理器(MASM),给出了MASM的结构和功能,并设计了具体的实施方案;以IBM的Aglet为平台,对此模型进行了验证。说明了该方法的可行性和有效性。     

Subharmonic and ultraharmonic emissions based on the nonlinear oscillation of encapsulated microbubbles in ultrasound contrast agents

Subbarmonics or ultraharmonics provides better contrast-to-tissue ratio （CTR） than the fundamental or the second harmonics, having prospective application in medical diagnosis. In this paper, subharmonic and ultraharmonic emissions are theoretically studied through nonlinear oscillation of encapsulated bubbles. The optimized frequencies for emissions of the subharmonics and ultraharmonics are discussed. In addition, sound pressure dependences of the subharmonics and ultraharmonics are studied in theory as well as in measurement. Results reveal that the developments of both subharmonics and ultraharmonics have the same trend, i.e. occurrence, growth and saturation, but the generation of ultraharmonic is a little earlier than that of subharmonic.     

Morphological Transformation of Plant Cells in vitro and Its Effect on Plant Growth

Enhancement of cell growth in suspension cultures is urgently needed in plant cell culture engineering. This study investigates the relationship between morphological transformation and cell growth in callus and suspension cultures of saffron cells belonging to the cell line C96 induced from Crocus safivus L In the suspension culture, an unbalanced osmotic pressure between the intracell and extracell regions induced a large morphological transformation which affected normal division of the saffron cells. An increase in osmotic pressure caused by the addition of sucrose inhibits the vacuolation and shrinkage of cytoplasm in the cells. As the sucrose concentration increases, the total amount of accumulated biomass also increases. Besides the sucrose concentration, increased ionic strength and inoculation ratio also help restrain to a large extent the vacuolation and shrinkage of the cytoplasm in the suspended cells, which results in increased biomass. The conditions for optimal biomass are： Murashige and Skoog＇s （MS） medium with 40 g/L sucrose and 60% （v/v） inoculation ratio.     

《中国高校科技与产业化》杂志理事会名单

Influence factors of the different complexing agents and auxiliary are discussed according to technology of electroless nickel plating and characteristic of the wastewater. The Treatment methods of the two chemical sediment and oxidation to adding to DTC are mentioned. Characteristic technology and existing questions in dealing with the wastewater are expounded. This method has a certain referable value for treating electroless nickel plating wastewater of the small enterprises .     

工业窑炉尾气中SO2的治理

二氧化硫(SO2)是工业窑炉尾气的主要污染物之一，其进入大气会对大气环境产生严重影响。文章分析讨论了二氧化硫尾气的来源及其对环境的污染问题，在此基础上提出控制二氧化硫污染物的治理方法，并对脱硫剂的选择进行了试验。     

基于Agent的分布式数据库设计及其在飞行计划系统中的应用

介绍了航班飞行计划的算法，分析了所涉及的源数据，提出了一个基于Agent的分布式数据库解决方案，提高了终端用户的平均响应时间．基于分布式数据库的飞行计划系统已被成功应用于实际，显示了很好的应用前景。     

孤岛油田三元复合驱结垢机理与防垢技术

针对孤岛油田三元复合驱试验过程中出现的结垢现象 ,应用 X-射线 (粉末 )衍射、扫描电镜及能谱分析等方法 ,对三元复合体系驱油过程中的结垢机理、垢样组成及预防等方面进行了研究 ,结果表明 ,垢主要以碳酸钙和碳酸镁为主 ,在此基础上研究的 HMP防垢剂 ,矿场采用后 ,效果十分明显 .