基层科技信息工作如何应对信息集成时代的到来

In accordance with the opportunities and challenges confronted by the basic-level scientific and technical information in the information integration environment, this article points out that the primary task of the basic-level scientific and technical information organization is to control information communication effectively and make the best use of information.     

Analysis and Application of Intelligent Transportation Systems to Taxi System in Cameroon

Most traffic control systems available in major cities in Cameroon are still out dated, make use of theories and models which are very slow to implement, waste resources and their efficiency is very low. Thus the number of road accidents encountered on our major highways and inter urban traffic networks has been increasing despite the various efforts made by government and certain NGO to synthesize road users on certain aspects of traffic control and safety road use. Taxis are not left out in the whole show and most of the blame always falls on them. The need to use available Information and Communication Technology ICT to improve on the control of traffic in inter urban cities and major highways is imperative. ITS optimizes the use of resources, reduce pollution, contribute to environmental protection and increases the national economy. . This paper starts by giving a brief situation of the transportation system in Cameroon, its drawbacks and proposes an optimized ITS based system.     

电子商务与信息交流

Electronic Commerce is a new business mode. Proceeding from information communication, this paper analyzes the information communication mode in Electronic Commerce, the impetus of information communication to Electronic Commerce and the influence of information communication on all stages of Electronic Commerce.     

试论网上专利统计信息的开发

Based on a summary of the present patent statistical information on Internet, this article puts forward an idea of developing Chinese patent statistical information on Internet,that is, developing a Chinese patent statistics system. It also discusses the function of this system and the way to realize and use this system.     

高校文科图书引进的信息量与信息价值

How to effectively use the special fund for importing liberal arts books is an important problem. In this paper, two basic indices, information quantity and information value, are proposed. The system of factors involved in the actual measurement and the computing formulas are described. The paper points out the importance of sharing imported books and discusses how to realize resources sharing.     

Grice＇ s Cooperative Principle and Humor

In this article, attention will be focused on the relationship between the cooperative principle and humor. Grice claimed that for the sake of the success of communication, both sides have the obligation to provide enough and proper information for a successful communication, and try to have the related reaction.     

Experimental quantum teleportation of a two-qubit composite system

Quantum teleportation, a way to transfer the state of a quantum system from one location to another, is central to quantum communication and plays an important role in a number of quantum computation protocols. Although significant experimental advances h…     

IA应用研究--我国政府网站考察与评价

Issuing government information is a major task of the government Website. So it‘‘s important that the government Website is organized in accordance with the users‘‘ need and habit. In this article, the theory of Information Architecture (IA) is used to examine and evaluate some government Websites in an attempt to investigate some elements of government Websites such as the navigation system, information retrieval method and ways of information organizing and labeling.     

Frogs Communicate by Means of Ultrasonic Sounds

People are always fascinated by ways that some members of mammalian species (such as dolphins, bats and some rodents) communicate using sounds that we cannot hear. But think twice if you say the capacity of producing and detecting ultrasounds (frequencies greater than 20kHz) is limited to mammalians. A study implemented by Prof. SHEN Junxian from the CAS Institute of Biophysics (IBP) and colleagues in CAS and abroad showed that a rare frog species in China should also be added to that list. It is the first documented case of a non-mammalian species being able to use ultrasonic communication. Their work was reported in the March 16 issue of the journal Nature.     

Probing into Protection of“Associated Designs”under the Current Legal System

It is one of the fundamental principles of the patent sys- tem to prohibit doubt patenting.As for the design patent,the law provisions relating to this principle are Articles 23 and 9 of the Patent Law and Rule 13,paragraph one of the Imple- menting Regulations of the Patent Law.However,whether the above principle is applicable to associated designs is yet to be explicated in the Chinese law provisions.By way of analysis of a series of cases,this article is meant to present     

跨文化商务交际语用原则及其运用

随着国际间商务活动日益频繁,在跨文化商务语境中如何得体有效地进行语言交际成为了人们关注的问题。合作原则和礼貌原则是人们语言交际需要遵循的语用原则。本文论述了合作原则和礼貌原则以及它们在跨文化商务交际中的运用。     

通信原理实验模式研究

实验是通信原理课的重要教学环节,本文在原有验证性实验模式基础上,规划了综合性实验、软件仿真实验和软件无线电实验,并以课余实验活动作为有效补充手段,形成了层次化实验体系,为通信原理教学提供了有力支撑。     

一种新型通用测温控制仪表的设计

文中以AT89C52单片机为核心,阐述了多场合温度测量控制系统的设计,讨论了系统软件、硬件的设计原理和方法。可实现温度的测量、显示和控制,以及与微机的串口通讯,提高了仪表的适应性,扩大了仪表的通用性,给用户带来更多的方便。该仪表能满足大多数温度测量控制系统的要求。     

浅析3G通信基站电源系统组成及防雷解决方案

3G通信基站电源系统是3G系统重要组成部分。首先介绍了3G通信基站电源系统的原理及组成,然后针对故障原因进行分析,并提出了防雷的解决方案。实践证明,方案简单可行。     

通信故障集中监视系统在城市轨道交通工程中的应用

介绍通信故障集中监视系统的功能、工作原理以及系统构成,城市轨道交通工程通信系统通过设置故障集中监视系统实现对通信各子系统进行集中监视告警管理。     

海洋渔业船舶GPS导航通信指挥系统

将 Ｇ Ｐ Ｓ和移动通信组合起来,构成一个导航通信指挥系统,以提高海洋渔业的现代化管理指挥能力⒚本文介绍了该系统的组成、工作原理及系统的实现⒚     

一种爬壁机器人的无线通讯系统设计

针对大飞机无损检测智能化的需求,研发一种大飞机蒙皮结构健康检测真空吸附爬壁机器人.设计了一种基于PTR8000模块的用于爬壁机器人的无线通信系统.首先介绍了机器人的总体设计;然后介绍了无线系统的硬件原理框图和接口设计,建立了爬壁机器人无线通讯系统的硬件平台;设计了爬壁机器人的无线通讯软件;最后进行了收发通讯和性能指标的...     

基于nRF401/nRF403的公交车电子候车牌设计

论述了公交车电子候车牌的工作原理，设计出一种可行的设计方案，它是由一台PC机、多个无线收发模块及以单片机为核心的显示电路构成的一个局部无线网络。论述了单片机与无线收发模块的硬件接口设计，点对多点无线通信协议的编写，点对多点无线通信系统的软件设计，并对该系统的实现原理和主机端模拟行车路径进行初步论述。     

一例大学生社交恐怖症咨询案例报告

通过运用森田疗法和艾利斯合理情绪疗法,对一例社交恐怖症患者进行了咨询。通过咨询,求助者的社会交往障碍得到基本的控制,基本达到了咨询的效果。经过这次咨询,证明森田疗法和艾利斯合理情绪疗法对社交恐怖症进行咨询和治疗是有效的。     

浅析电力系统无功补偿

无功补偿在电力系统中起到提高功率因数的作用,合理地使用无功补偿设备,可降低设备和线路的损耗,对调整电网电压,提高供电质量,抑制谐波干扰,保证电网安全稳定的运行具有十分重要的作用。本文从电力无功补偿的基本原理、无功不足的危害、补偿方式、运行管理及实际应用几个方面进行分析,阐述了无功补偿在电力电网中应用的意义和作用。