Genetic and photoperiodic control of an avian reproductive cycle

European blackcaps,Sylvia atricapilla, with one breeding season per year, have a single-peaked annual testes cycle. However, African conspecifics from the Cape Verde Islands with two breeding seasons per annum demonstrate a two-peaked cycle. Both population-specific cycles reflect differences in the respective endogenous circannual rhythms. Experimental hybridization of birds of the two populations resulted in an intermediate pattern of testes cycle, thus demonstrating that there are genetic components for some temporal aspects in an avian reproductive cycle. Another characteristic of the African birds, their extremely rapid juvenile development and early sexual maturity (at an age of 5–6 months) proved largely to be a photoperiodic (short-day) effect in birds hatched in autumn. The same effect could also be induced in European conspecifics exposed to correspondingly short day-lengths.     

MIS系统通用插入组件的设计与实现

论述了数据字典是实现通用插入功能的关键，并描述了利用Grid控件实现通用插入组件的一般方法，着重讲述了依据数据字典动态生成界面，动态消息响应的处理过程，有很大的应用价值。     

基于ASP技术对网上作文栏目的信息管理

通过ASP与HTML页、脚本命令和ActiveX组件组合,创建交互的Web页的应用程序,实现了网上作文栏目管理.     

元认知策略培训与大学英语写作的关系

通过对大学英语写作课堂融入元认知主体评估和元认知策略以及元认知任务评估的培训,以探讨元认知与大学英语写作能力发展的关系。结果表明,元认知不仅有利于中国学生摆脱母语思维的负迁移,提高学生的语言运用能力,而且能有效培养学生的自主学习能力。     

热处理炉计算机智能Fuzzy群控系统

针对我国热处理炉人工控制的现状,提出了一个可行的热处理炉计算机智能Fuzzy群控系统,研究了被控对象的数字模型Fuzzy控制算法,智能控制器设计及其控制结果,智能控制器采用生产式结构,参与过程的复合调节,控制结果表明,系统鲁棒性增强,跟踪和调节性能好,控温偏差和炉内温度不均度均在±3℃以内。     

复杂系统集成控制及其仿真研究

本文对于复杂系统提出一种集成控制策略,即解耦/模糊控制。并以机器人关节运动控制为例,进行仿真研究,仿真结果是令人满意的。全文包括五个部分:1.前言;2.复杂系统的解耦模型;3.复合规则库与模糊控制;4.仿真研究;5.结论。     

Decision Support Systems (DSS) development using a model of user inquiry types: Methodological proposals and a case study

A study of the DSS implementation area reveals an increased emphasis on methodologies for DSS development. As the DSS field matures, a larger number of methodological options are becoming available to the DSS developer. Existing methodologies have adopted various methods for performing the important task of DSS requirements analysis and specification. In envisaging a hierarchy of requirements analysis methods, a method for improved requirements analysis is proposed to remedy observed deficiencies within it. This method is based on a view of generic types of inquiries or solicitations made by the DSS user during decision-making. This formalism constitutes the basis of a proposed DSS development methodology that offers several benefits to DSS development. The intended benefits include a sharper and more focused requirements analysis to improve the DSS development process. This paper describes the model and methodology, alongside details of a real-world example of their use in developing a Marketing Decision Support System (MKDSS) for the support of marketing decision-making.     

小型水电站电气自动控制设备合理设置刍议——降低小水电造价的有效措施之二

本文综合介绍了在我国农村小型水电站建设中,直流电源和交流电源的使用情况,自动化控制设备的设置和使用情况,小型水轮发电机励磁系统的设置和性能比较,并据此提出如何合理设置小型水电站的操作和保护电源、电气自动化控制设备和小型水轮发电机励磁系统的选择,在保证小型水电站安全可靠运行的前提下尽量简化这些设备的设置,以降低小水电的造价。     

实现自动化测试系统中串行通信若干问题的研究

本文讨论研究了计算机与智能仪器串行通信的主要问题,首先分析了这种串行通信的特点,阐述了计算机串行通信方式的选择,接口硬件的连接及软件的编程。重点讨论了实现串行通信中的通信协议、流量控制和差错检测,经在PC—386工控机与数种智能仪器的串行通信实验,得到了令人满意的良好效果。文中提出的内容是理论与实践结合的经验总结,它对从事于计算机与智能仪器串行通信工作的人员具有重要的参考价值。     

多专家集成式决策支持系统探讨

本文在文献[1]给出集成式决策支持系统(I—DSS)的基本概念及提出I—DSS的两种主要形式的基础上,对I—DSS的形式之一——多专家集成式决策支持系统(MEI—DSSS)作了较深入的探讨。本文阐述了MEI—DSS提出的原因,给出了MEI—DSS的基本概念,概述了MEI—DSS同相关学科和技术的关系,提出了MEI—DSS的基本结构框架,并从知识表示、推理机制以及多专家系统动态组合进行问题求解的算法实现等方面探讨了该系统在大型决策中的应用。本文最后提出了MEI—DSS今后有待深入研究的课题。