可编程控制器在南通狼山空中缆车中的应用

介绍了可编程控制器（ＰＬＣ）在南通狼山空中缆车中的应用及该系统的软、硬件结构。系统采用日本ＯＭＲＯＮ公司生产的Ｃ６０Ｐ－ＣＤＲ－Ａ主机、Ｃ６０Ｐ－ＥＤＲ－Ａ扩展机和少量的中间继电器来代替传统的继电－接触器控制系统,各接触器都有辅助触点反馈回ＰＬＣ,采用行程显示技术以实时显示吊厢的实际位置,出进站时的加减速均采用软硬件双重控制,用梯形图编制开／停车逻辑控制、速度给定处理、行程显示、各种紧停及报警处理程序。实践证明,该系统具有有效的故障自诊断能力,灵活的控制方式,检修、维护更简便,可靠性大大提高。     

基于模糊逻辑的新生心理健康评估专家系统的设计与实现

在研究了几种评估方法的基础上,提出了模糊评估与层次分析相结合的综合评估方法,并基于建立专家系统的基本设计思想,开发了一个基于Web的新生心理健康评估专家系统。针对新生所表现出的心理症状和潜在心理信息对新生存在的心理问题进行了诊断研究,为新生教育及管理提供了有价值的信息。     

基于CPLD的变量施肥控制系统开发与应用

为提高变量施肥系统的工作稳定性,开发了一种基于复杂可编程逻辑器件（CPLD）的变量施肥控制系统。自动模式下,系统接收GPS信号确定施肥机位置和行进速度;手动模式下,系统通过速度传感器获取速度信号。系统将施肥机的行进速度与施肥处方信息相结合,控制排肥轴转速实现变量施肥。应用该系统进行变量施肥田间作业,累计作业面积达72 hm2。应用结果表明,该系统以150～600 kg/hm2实施变量施肥作业时,其排肥量误差小于6%。     

模糊c-均值算法在区域土壤预测制图中的应用

基于模糊c-均值算法和地统计学空间插值,在面积约为1km2的研究区内进行区域土壤预测制图。研究结果表明:根据研究区123个剖面和土钻样点,通过分析它们在形态学上的特征和定量属性,建立了9类诊断特征土层。通过FCM算法模型,获得4类最佳分类数,模糊指数为1.7。类别数目与研究区受地形、母质和土地利用方式影响的主要成土过程决定的土纲下土壤类型数目一致。将经过对称对数比转换的隶属度成分数据进行单一模糊类别隶属度土壤预测制图,4种类别土壤在空间上具有明显的渐变过渡特征,制图结果较理想。在单一类别隶属度土壤图的基础上生成最大隶属度土壤图,与常规土壤调查土壤图具有共同参比的基础。     

文献采访定义新探

以往对文献采访这一概念定义存在经验和内涵对应上的不足,从逻辑学的角度重新定义,使这一概念符合逻辑定义的严密性和广义上的适用性,这对于文献采访实践和理论的建设都是十分必要的。     

国家职业教育发展政策的内在逻辑与演化规律研究

从学生发展体系、教师培养机制、资源获取途径和学校办学思路解读《国家职业教育实施方案》，可以发现国家职业教育政策发展的内在逻辑与演化规律，职业教育政策的发展动向是下沉式、产业型、国际化和双创式。     

Development of an adaptive neural-based fuzzy inference system for feeding decision-making assessment in silver perch (Bidyanus bidyanus) culture

The primary objective of this study was to develop an adaptive neural-based fuzzy inference system (ANFIS) for feeding decision-making in aquaculture. Silver perch (Bidyanus bidyanus) were raised under semi-intensive conditions in Taiwan. Because dissolved oxygen (DO) is a key factor that is helpful in detecting the appetite of fish at the initial period of the feeding activity and because the flocking and struggle behaviors of food-searching fish have a transient effect on the measurement of the DO, a simple water-reused rearing tank was prepared to measure the DO to develop a fuzzy logic controller (FLC). In the equivalent ANFIS of the FLC, two linguistic variables were used to describe the food-searching state of the fish population and establish a rule base composed of 15 rules. Furthermore, an alternate hybrid learning approach, which is a fuzzy logic technique based on artificial neural networks, was suggested to quickly model the linguistic variables and evaluate their relative contributions. The results indicated that a decision threshold of 0.17, which was inferred using the fuzzy logic approach, considerably benefits the feeding decision; the high rate of accurate judgments (with an accuracy of 97.89%), which was obtained by the ANFIS model, was close to the actual food searching behaviors of fish. Therefore, the application of the ANFIS model to the feeding decision system in an aquaculture rearing tank has considerable potential for success.     

产业集群升级研究的演进逻辑与趋势展望——从宏观到微观的三层次分析框架

通过对大量文献分析归纳的结果表明，产业集群升级的研究自20世纪90年代末以来大致沿着“集群外部层面→集群层面→集群异质性主体层面”的逻辑演进，其中全球价值链、全球生产网络理论从产业集群外部层面探寻产业集群升级的路径和模式，而产业集群升级的因素观点、结构观点和演化观点从产业集群整体层面探究集群资源、能力与网络的演化升级过程。从未来研究趋势来看，从集群内主体的“同质性假定”过渡到“异质性假定”，从“外因决定论”过渡到“内因决定论”或“内外因综合决定论”，从“结构主义导向”过渡到“行为主义导向”，将是未来产业集群升级研究的重要发展方向。     

物理化学课的逻辑结构教学法

本根据美国名教育学家J．S．布鲁纳的“结构主义”教学理论，结合物理化学学科的特点，针对教学过程中不同的教学内容，进行了一系列的研究与探讨，初步总结了物理化学的“逻辑结构”教学法。     

Research on Reliability of Water Delivery Pipeline System

In this paper,the reliability calculation models of water delivery pipeline system with setting up communicating tubes are studied by net decomposition method.The calculation results show that the reliability of water delivery pipeline system may be lowered or increased with increment of the communicating tube number,and the influence of reliability variety of tubulation of delivery main pipeline and T branch pipe is a sensitive factor influencing the reliability of the system.Therefore,the research results have the important leading meaning to the design,the choice of subassembly,the construction installation,maintenance management of the water delivery pipeline system,and looking for path with the biggest reliability of the system.