简易智能加湿器设计

介绍一种以SPCE061A单片机为核心的湿度控制系统,实现对空气湿度的自动检测及显示。用湿度传感器采集空气中的湿度信号。被采集的模拟信号通过A/D转换后再根据传感器的湿度阻值曲线计算湿度值,并将其显示在数码管上。     

基于CD4052的温度采样系统的设计

在温度采样系统中,经常遇到单片机A/D引脚不够的情况,现以CD4052为基础,把软件操作系统分时复用的思想应用到单片机编程中,结合CD4052选通不同的通道,实现较少A/D引脚采样多处温度点的功能。     

发动机测试数据采集与处理系统的设计及实现

文章探索的是有关发动机性能测试数据方面的技术。对发动机需要测量的数据有转速、扭矩、功率、耗油率、耗油量、机油压力、机油温度、冷却水温等参数。发动机测试数据采集与处理系统由上位机和下位杌组成。下位机主要采用AT89C52单片机，用汇编语言编写相应的程序，用模一数转换器ADC0809把模拟量转换为数字量；而上位机采用PC机，程序语言用VB，存储数据采用Access数据库，最终实现试验数据的显示、存贮与打印等功能。     

Economic importance and statistical significance: Guidelines for communicating empirical research

Abstract

A critical objective for many empirical studies is a thorough evaluation of both substantive importance and statistical significance. Feminist economists have critiqued neoclassical economics studies for an excessive focus on statistical machinery at the expense of substantive issues. Drawing from the ongoing debate about the rhetoric of economic inquiry and significance tests, this paper examines approaches for presenting empirical results effectively to ensure that the analysis is accurate, meaningful, and relevant for the conceptual and empirical context. To that end, it demonstrates several measurement issues that affect the interpretation of economic significance and are commonly overlooked in empirical studies. This paper provides guidelines for clearly communicating two distinct aspects of “significance” in empirical research, using prose, tables, and charts based on OLS, logit, and probit regression results. These guidelines are illustrated with samples of ineffective writing annotated to show weaknesses, followed by concrete examples and explanations of improved presentation.     

Cournot Competition and Hit-and-Run Entry and Exit in a Teaching Experiment

Instructors can use a computerized experiment to introduce students to imperfect competition in courses on introductory economics, industrial organization, game theory, and strategy and management. In addition to introducing students to strategic thinking in general, the experiment serves to demonstrate that profits of a firm fall as the number of competitors is increased in a market and that firms enter profitable markets. The authors have used the experiment in undergraduate classes on strategy and management as well as in master of business administration courses with great success.     

论跨国破产的财产清偿问题

跨国公司在快速兴起的同时也面临着跨国破产问题.作为跨国破产问题的一部分,破产财产的清偿问题已成为业界关注的热点问题.本文首先阐述了跨国破产的定义、破产财产的范围及相关原则,随后以雷曼兄弟的破产案件为例,对跨国破产财产清偿原则作了进一步说明.     

Complementary technologies,knowledge relatedness,and invention outcomes in high technology mergers and acquisitions

Prior research on M&As and invention outcomes has not systematically examined the influence of two types of knowledge differences. Knowledge relatedness has typically been equated with knowledge similarity and the separate influence of knowledge complementarity has been overlooked. Similarly, studies examining innovation outcomes of M&As have typically focused on the role of technological knowledge and overlooked the influence of scientific knowledge. We develop a model of relatedness and invention performance of high‐technology M&As that considers science and technology similarity and complementarity as important drivers of invention. We test the model using a sample of M&As from the drug, chemical, and electronics industries and a fine‐grained measure of knowledge relatedness that distinguishes between science and technology relatedness. We find that complementary scientific knowledge and complementary technological knowledge both contribute to post‐merger invention performance by stimulating higher quality and more novel inventions. This suggests that high‐technology firms seeking acquisitions should search for, identify, and acquire businesses that have scientific and technological knowledge that is complementary to their own. Our results also suggest that similarities in knowledge facilitate incremental renewal, while complementarities would make discontinuous strategic transformations more likely, and that absorptive capacity research should be expanded to consider complementarities as well as similarities. Copyright © 2010 John Wiley & Sons, Ltd.     

并购重组需要发挥并购基金和高收益债券等债券产品的作用

中国人民银行、银监会等机构从2009年开始设立并购基金,引导和支持金融机构积极参与企业并购重组业务等活动,鼓励规范上市公司通过并购重组,促进资源整合和有效配置。当前应进一步解决支付手段单一和手续繁琐而导致的融资困难等瓶颈问题,同时应加大开发高收益债券等债券产品力度,使其发挥更大的作用。     

基于USB总线的航向姿态系统角度测量仪设计

本文简要介绍了基于USB总线的航向姿态系统角度测量仪的设计原理,并详细描述了其软件和硬件的组成结构。     

开放催生“双城记”

在中国，省会城市无疑是各省的龙头，在方方面面遥遥领先省内其他城市。尤其是前些年，省会城市在省内处于绝对的“垄断”地位。然而，改革开放以后，情况就大不一样，有发展较快的城市敢与省会叫板，致使省会城市“一城独大”的地位在削弱。笔者认为这是好现象，城市问可以在互相挑剔、取长补短、比拼式发展中跳跃前行……。