农产品物流元数据应用规范研究

从农产品物流研究元数据应用与信息资源生命周期的关系入手,引出农产品物流研究元数据应用与设计的一般原则,探讨并构建农产品物流元数据应用体系模型——构建农产品物流元数据核心集、建农产品物流元数据基本结构(包括扩展规则)及应用纲要,同时对元数据开放机制的建立以及建农产品物流元数据应用的一般流程给出建议,为物流不同环节异构数据管理平台建立具有可操作性的以物流数据为核心的农产品供应链全程数据交换模型系统应用规范.     

异构环境下农产品物流数据集成规范研究

本文在指出异构数据交换基本方式的基础上,分别分析了农产品物流企业的数据集成方案和几个主要的标准化集成规范.前者主要通过建立数据库管理系统或基于使能器的集成框架实现集成.后者主要包括CORBA、DCOM、EJB和XML.最后指出,结合农产品物流企业特征、基于WEB、建立在标准规范基础上的集成将是解决农产品物流企业数据集成的主要方式.     

附加端子及其对智能机器人类型产品电磁兼容检测的适用性分析

讨论和分析了智能机器人类型产品进行电磁兼容检测的标准适用性问题。结合标准CISPR 14-1给出的限值和测试要求,描述了在电源端子和附加端子上进行传导骚扰测试的测量程序。分析了标准CISPR 14-1中对使用不同电源（供电网络供电,或者电池供电）要求的测试要求。使用某型号智能机器人产品分析了其附加端子的特征,讨论了如何对附加端子进行分类,并提供了对此类产品进行电磁兼容检测的规范流程。     

水产养殖产品精制加工与质量安全发展战略研究

本文基于对我国养殖水产品精制加工和质量安全现状、存在问题的客观分析,提出了"构建以加工引导养殖、保障消费的现代水产业发展新模式,促进养殖、加工与物流业同步发展""完善科研经费投入体制,构建以加工引导养殖、以加工保障消费的渔业科技创新体系""强化源头创新,研发关键配套技术,解决水产加工产业发展的瓶颈问题"及"加强顶层设计,增强政策、法律法规与科研项目引导,切实保障养殖水产品质量安全"等促进水产品加工业健康发展的建议,并提出了发展我国水产品加工产业的关键技术,为推动我国水产业转型升级、实现现代化提供理论支撑。     

我国蔬菜种业发展战略研究

我国是世界第一大蔬菜生产国与消费国,蔬菜种业是确保现代蔬菜产业发展和蔬菜周年均衡供应的重要物质基础。实现蔬菜种业的可持续发展要靠科技创新。我国蔬菜种业发展进入了一个关键的时期。本文分析了我国蔬菜种业与种业科技的现状,对比了国外蔬菜种业发展的情况,针对我国蔬菜种业的主要问题,提出了我国蔬菜种业的发展战略、目标、任务、保障措施和政策建议。     

SYSTEMS EDUCATION AT THE FIELDING INSTITUTE

This is an exposition of the post-graduate program evolving at the Fielding Institute to train professionals in social praxis—ting system theory and methods into programs that effect social change. We illustrate herein how the practice of intervention in social systems calls upon systems praxis, and we argue that the practitioners must have, in addition to a background in the social sciences, a pragmatic access to theories of personal, social and institutional change. The foundation of an education for systems praxis requires intermingling theoretical ideas with skills that can affect the social system. We propose three essential elements for the education of system practitioners: (1) the process of decision-making. (2) processes of inquiry suitable to living systems at personal and at societal levels, and (3) system thinking. Finally, we describe how the whole process requires self-reflection and personal maturity to maintain authentic human engagement     

REMARKS TOWARD A GENERAL THEORY OF ORGANIZATION

The paper contains the following elements: (1) a discussion of the role of logical formalisms in scientific theory as a way of establishing legitimacy for general organization theory, (2) a discursive account of the relation between information and entropy in endosomatic and exosomatic evolution, and the deficiencies in such an approach, (3) a formal derivation of the relation between organization, information, and entropy utilizing the work of Brillouin and Watanabe and notions from statistical mechanics, and (4) an application of the theory of organization to the evolution of the scientific process, as well as some suggestions for applications elsewhere.     

The optimal level of fuzz: case studies in a methodology for psychological research

Cognitive science research is hard to conduct, because researchers must take phenomena from the world and turn them into laboratory tasks for which a reasonable level of experimental control can be achieved. Consequently, research necessarily makes tradeoffs between internal validity (experimental control) and external validity (the degree to which a task represents behaviour outside of the lab). Researchers are thus seeking the best possible trade-off between these constraints, which we refer to as the optimal level of fuzz. We present two principles for finding the optimal level of fuzz, in research, and then illustrate these principles using research from motivation, individual differences and cognitive neuroscience.     

Optimal control of LQG problem with an explicit trade-off between mean and variance

For discrete-time linear-quadratic Gaussian (LQG) control problems, a utility function on the expectation and the variance of the conventional performance index is considered. The utility function is viewed as an overall objective of the system and can perform the optimal trade-off between the mean and the variance of performance index. The nonlinear utility function is first converted into an auxiliary parameters optimisation problem about the expectation and the variance. Then an optimal closed-loop feedback controller for the nonseparable mean–variance minimisation problem is designed by nonlinear mathematical programming. Finally, simulation results are given to verify the algorithm's effectiveness obtained in this article.