可编程控制黼矿井提升信号系统中的应用

主要介绍了PLC可编程控制器在矿井提升信号系统中的应用，并对其特点、功能、及日常维护等做了详细说明。     

一种新的多功能智能化照明信号综合保护装置设计

本文主要介绍了一种新的智能化多功能的照明综合保护装置,采用了16位PIC单片机,配以高精度的数据处理及先进的保护算法,性能可靠,动作准确,具有过压、欠压、短路,漏电闭锁、漏电动作、及电缆绝缘危险指示等多种保护功能。     

现阶段农地流转中的关键问题与微观制度创新——四川省安岳县农村土地流转实践考察

现阶段我国宏观层面的农村土地“三权分置”制度和流转机制仍处于加紧构建和完善过程中，急需微观层面的创新实践提供经验支持和政策借鉴。四川省安岳县农村土地流转具有土地利用特色鲜明、推行时间长、流转规模大、流转效果较好等特征，但也存在流转行为不规范、农户利益难以保障、土地利用效率不高等关键问题。近年来，安岳通过建立“信用保证金”制度、“照市过价”制度和“土地再流转”制度，达到了规范土地流转行为、土地流转定价市场化和提高土地资源利用效率的目的，有效解决了当地农村土地流转中存在的突出问题。当前，在农村土地流转实践中，应加强对承包业主的信用评价与监管，积极推动土地流转定价市场化，充分提高土地资源利用效率。     

Does delaying service-failure resolution ever make sense?

Conventional wisdom suggests that service providers should respond to their failures as quickly as possible. Some research, however, points out that delaying resolutions may produce highly desirable results. The study here investigates these competing views by examining under which conditions an immediate or a delaying resolution produces more positive consumer responses in term of re-patronage and negative word-of-mouth intentions. Based on the concept of service separation, this research identifies an interaction effect between service separation (separated service, non-separated service) and response timing (immediate response, delaying response) on consumers' post-consumption intention. This research also finds that the relationship between service separation-response timing interaction and consumer response is mediated by consumers' negative emotions. This study contributes to refining our understanding of consumer psychology in service recovery. Practically, the studies also enable service providers to better allocate their resources to recover different types of services' failure.     

数字信号处理的发展与应用

本文通过概述数字信号处理的发展历程,主要介绍数字信号处理的发展与应用,并展望DSP发展前景。     

浅议高校公共基础课程考试制度

近年来,教考分离制度作为高校考试工作改革,得到广泛实施。本文分析卷面考试两种制度的优势,阐述了教考分离制度更有利于实现高校考试功能,也指出弊端和实施注意点,对当前教考分离工作的实施具有一定的借鉴作用。     

一种基于信号机制在UNIX实时应用中快速传递信息的方法

在多进程的实时应用程序中，进程之间往往需要通过传递一些信息来达到资源共享的目的。介绍了一种基于信号机制在UNIX实时应用中的两个进程之间实现快速传递信息的方法，提高了实时性。     

Information Cascades in the Labor Market

A model of herding behavior in the labor market is presented where employers receive signals with limited precision about the workers types, and can observe previous employers decisions. Both the employer and the worker can influence the signal probabilities. In particular, the employer tries to increase the precision of the signal about the workers type whereas the worker wants to get a good signal, independent of her type. In a two-period model, we derive conditions for an equilibrium in which only down-cascades occur, i.e., the second employer does not hire a worker with a bad history even if he receives a favorable private signal about the workers type, but he follows his own signal if the workers history is good.     

New technology and the urban environment

Technology has always had an influence on the form of settlements, but only since the coming of Information Technology has it aroused much interest from academics and planners. The impact that IT is likely to have on urban areas is debated, some foreseeing decentralisation and the end of place, while others see evidence of the centralisation of control in a global economy. Other new technologies may also affect cities as new materials provide the opportunity for different styles of building. As we enter the 21st century, however, we do so with the largest stock of urban capital ever, much of which is ageing and in need of maintenance. Technology is part of a complex interrelationship of influences on urban areas and much of it will have to be retrofitted on to the pre-existing environment.     

高炮随动系统自动测试中正弦机发送频率的确定

在某型高炮随动系统测试中,正弦机的发送频率直接影响着输出信号的平滑度,从而会影响测试的精度。为了避免在正弦机运行过程中,计算耗用过多机时,在正弦机发送之前,先计算出每个位置信号、前馈信号的数值,存放于内存中。本文根据该正弦机信号的特点,分析了几种正弦机角位置信号发送频率方式的优缺点,确定了正弦机发送频率的方式。