基于光纤的瓦斯传感器的检测方法

本文首先介绍光纤传感器的类型和特点,并选择了典型的瓦斯传感器结构进行了模块分析,并预测了光纤瓦斯传感器的发展趋势。     

一种基于无线传感器的温室环境监测系统实现方法

本文针对当前温室环境监测系统的不足,将无线传感器网络技术[1]、Zig Bee技术和嵌入式技术相结合,探索出实现低成本、高效率的温室监测系统,为降低温室监测系统的造价,为提高设施农业发展水平提供必要的支持。     

基于超低功耗单片机控制的物流运输状态检测系统的设计

为了解决精密仪器或易碎货物在运输过程中发生跌落冲击造成损伤或破碎以及由于包装不合理等原因导致对外界敏感仪器损坏的问题,设计了基于超低功耗单片机MSP430为核心的物流安全记录仪对整个运输过程进行实时监控。该系统利用美国ADI公司生产的三轴加速度传感器对运输过程中冲击事件进行实时采集捕获,采用瑞士SENSIRION公司生产的温湿度传感器对当前货物外部环境进行检测。     

RFID与WSN融合技术的研究

本文探讨了RFID与WSN融合的技术,对其融合方案进行了比较,并分析了RFID与WSN相互融合的状况和发展趋势。     

基于动态规划的无线传感器网络的路由算法

在无线传感器网络的研究中,其中一个重要的问题就是路由问题,在数据传送方面具有多跳的特点,表现这一特点的原理就是动态规划原理,借用此原理来设计传感器网络的路由算法显得最适合不过了。文章经过分析研究和测算,认为路由算法能最大限度的实现能量节省。     

初识无线传感器网络

文章简要介绍了无线传感器网络的构成,其出现对社会发展的影响;重点介绍了无线传感器网络的应用领域及其现阶段存在的一些问题。     

抽油机井远程监测示功图质量可靠性改进

针对普通载荷传感器接线插头随驴头往复运动，易松动导致信号传输可靠性差，影响示功图的上传问题。设计了游梁式栽荷传感器，在确保示功图信号准确传输的条件下，改进了接线插头连接方式，使信号线紧固在传感器上。经过现场试验，认为远程监测示功图的质量可靠性得到了提高。     

Let's make a deal in the classroom: Institutional solutions to the Monty Hall Dilemma

The authors describe how the Monty Hall Dilemma, a well-known choice anomaly, can be demonstrated with a simple and versatile classroom experiment. In addition to demonstrating the anomaly, the experiment can be used to introduce students to some institutional modifications that have been shown to ameliorate it. This experiment, which can be tailored by instructors to meet specific learning objectives for a variety of courses, can also be used to frame broader discussions about rationality, institutions, and choices under uncertainty.     

Scientific and technical planning in the People's Republic of China

At a time when Western market economies are struggling with ways of directing and stimulating technological innovation, China, with a highly centralized system for the planning and coordination of science and technology, offers an unusual perspective on the feasibility and operations of a large-scale, national organization of scientific and technical resources. This paper describes the mechanics of the science and technology planning process in the Chinese system and then draws conclusions on a variety of pertinent issues, such as: whether or not planning is actually conducted at a macrolevel; what are the useful sources of information for scientific and technical decision making within the system; what are the motivations for doing research in China's planned economy and how do they affect the research that is done; and, in summation, does the Chinese attempt at macroscience and technology planning really work?     

MRO parts service in the machine tool industry

This article examines the post purchase Parts servicing of Machine Tools. Survey results outline the policies and criteria that influence the degree to which replacement parts will be provided for old machines. The survey indicates that the policies of some American manufacturers leave service gaps that can be exploited by foreign as well as domestic competitors.