基于有线电视网的股票接收系统设计和实现

随着经济的发展,股票的接收和在线交易越来越受到人们的关注。该文充分利用现有的有线电视网的资源,设计出了适用于智能化家庭信息平台的可移植股票接收系统,并且使用计算机对股票信息进行实时接收,并提出了在线交易的解决方案。     

永煤集团移动信息化综合管理系统的设计与实现

永煤移动信息化综合管理系统是在传统信息系统基础之上,结合手机移动通信技术的一套新技术、新形式的信息系统平台,通过实施移动信息平台建设,实现了通过手机便可接收系统发送的会议、工作等信息,实现了信息无线化、随时化应用,进一步提升了信息流转的效率。     

基于WinCE车载导航系统定位功能的实现

本系统采用GPS数据作为主要定位源数据,对车辆进行定位导航。本文描述了GPS的通信协议及数据格式,导航信息的接收和处理,同时在WinCE环境下,以ARM为平台对GPS导航信息进行接收和提取,最终实现了对车辆的导航和定位。     

基于XML建设行业信息交换平台的设计与实现

阐述一种建设行业信息交换平台的设计与实现,该平台在制订统一的行业信息交换规范的基础上,采用XML技术及IBM的消息中间件产品Webspere MQ来传送和接收信息,实现了各个单位不同的主机、操作系统、数据库、业务系统之间的数据交换及共享。     

基于物联网的农场信息接收与发布平台设计与实现

为了远程实时监测农场无线传感器网络的环境数据,使用B/S、C/S混合架构设计了农场信息接收与发布平台;系统由C/S服务器、数据库、B/S服务器、客户端浏览器组成;介绍了Socket数据通信、用户控制模块、节点分布显示模块的实现;重点阐述了平台数据异常检测、数据实时发布等关键技术;功能验证表明:平台通过友好的人机互交界面准确呈现农场实时环境数据,并具备管理员远程控制能力;信息发布与接收平台满足远程实时监控的要求,具有一定使用价值。     

基于Android智能手机的DICOM医学图像浏览系统设计与开发

为了方便医护人员更为快捷地接收查看患者的医学图像和相关信息,该文设计了基于Android智能平台的医学图像显示系统。该系统采用Java语言和Eclipse平台设计并实现了不同厂商的不同医学图像模态的DICOM图像参数的读取,图像的显示。该系统为推动医学图像的临床应用具有重要的应用价值。     

一款自动化车联网监视管理系统设计

设计了一款自动化车联网监视管理系统,其主要功能包括自动化的车载系统和监视管理系统两个方面。车载系统主要由通讯系统和车载定位系统组成,监视系统主要由监视及通讯系统组成。车载系统接收和获取到监视平台系统所有工作人员获得的所有车辆位置信息,并且把所有工作人员的所有车辆位置信息等运用无线通讯和网络直接传输给了监控平台,监视平台能够实现对该位置信息的采集与整合,呈现出一个由主检测系统自动调用的地图界面,并且能够将部分信息发送至车联网广播区域中对其界面信息进行了显示和展现。该监控系统的目标之一就是为了使得所有的车辆运行状态资料都可以通过一个数据库或者链路发送到监视中心进行传输。     

试论数字化校园中移动教务系统的应用

目前,数字化校园是高校建设的热点之一。数字校园是通过基础平台的搭建,来进行校园信息的整合。本文从数字化校园入手重要性,表达了随时随地接收信息的重要,论述了移动教务系统在数字化校园背景下的应用。     

嵌入式气象预警信息接收系统的设计与实现

设计了一种基于ARM920T微处理器和GPRS网络的无线气象预警信息接收系统。该系统采用GPRS作为信息接收的桥梁,通过短消息业务接收气象预警信息,利用嵌入式Linux操作系统资源和图形开发库QT／E实现气象预警信息的显示、语音播报。该方案有效地缩短了接收延迟时间,提高了预警信息接收的有效性,避免了传统的气象预警接收方式无法及时应对突发性气象灾害的情况。     

企业短信综合发布平台PMS的设计与实现

短信服务(SMS)在通信产业中正在占据越来越重要的位置。目前国内大多数短信服务平台的访问方式单一、局限性高、适用面窄。PMS系统使用了加强的CMPP协议,提高了系统的安全性,同时集成了不同平台的访问方式,用户既可以通过WEB,也可以通过企业内部PC客户端使用短信发布平台。工作人员无论在任何地点都可以通过PMS系统接收到公司的直接信息。PMS也适用于提供信息服务的网站。     

Production control: Current developments and future trends

Manufacturing industry is going through a period of unprecedented change as a result of the developments in micro-electronic technology. This is bringing about a transformation not only in hardware, in the form of computer-aided manufacturing, but in the manner in which production is organised and controlled.It is in the latter connection that the present paper sets out to review current developments and future trends. In particular the machine readable bar-code is seen as a key element in extending computerised control to cover not only the machines, but tools, materials and parts and their movement in the development of fully integrated manufacturing systems.As the move towards automation gathers pace it is forecast that manufacturing industry will become more process industry like in form, with consequences for the way in which production is organised and controlled.Finally consideration is given to the manner in which these current developments in the field of production are giving rise to a structural alteration in industrial labour requirements in which, in the future, fewer people will be required but on highly enriched work tasks.     

Methods of system development in Finland

Interest in the use of different methodologies, methods and tools for information systems analysis and design has been increasing for the last decade in Finland. This has resulted in the founding of a special interest group in systems analysis and design within the Finnish Data Procesing Association and in its making a survey of the methods and tools in use in Finland in 1980. This survey was in the form of a questionnaire mailed to the company members of the association. The results of the survey show a wide use of different tools in the design and implementation of information systems. In the analysis phase, there seems to be a need for more and better methods and tools. In 1980 several companies began to use new methodologies, methods and tools in the field; the most common are: the Swedish ISAC, Jackson's JSP, and the data dictionary.     

The influence of IT: perspectives from five Australian schools

Abstract Information and Communication Technologies (ICT) are now widespread in Australian schools but with variation in how, where, when and how much they are used. Computers may be located in a computer laboratory, distributed throughout the school, or students may use their own laptop computers. IT may be a subject in its own right or ICT may be used across all areas of the curriculum. It is how ICT is used in the school setting that is important in providing students with the skills to be participate in a 'knowledge society'. This paper examines the ways in which information and communication technologies influence teaching and learning in five Australian schools. Data were gathered through observation, interviews and document analysis in schools operating at the elementary and secondary grades in relatively technology rich environments. Each of the schools participated in the Australian component of the Second Information Technology in Education Study – Module 2 (SITES-M2) of innovative pedagogical practices. Several of the studies were of specific projects where ICT was the key enabler of the learning programme. Others focused on an entire school's approach to ICT as an agent for changed approaches to learning.     

The positive and negative implications of anonymity in Internet social interactions: “On the Internet, Nobody Knows You’re a Dog”

The growth of the Internet at a means of communication has sparked the interest of researchers in several fields (e.g. communication, social psychology, industrial-organizational psychology) to investigate the issues surrounding the expression of different social behaviors in this unique social context. Of special interest to researchers is the increased importance that anonymity seems to play in computer-mediated communication (CMC). This paper reviews the literature related to the issues of anonymity within the social context, particularly in CMC, demonstrating the usefulness of established social psychological theory to explain behavior in CMC and discussing the evolution of the current theoretical explanations in explaining the effects of anonymity in social behavior in CMC environments. Several suggestions for future research are proposed in an attempt to provide researchers with new avenues to investigate how anonymity can play both positive and negative roles in CMC.     

利用MODIS EVI时间序列数据分析福建省植被变化(2000~2017年)

以全国森林覆盖率最高的福建省为研究对象,利用2000~2017年夏季的MODIS EVI植被指数数据和气象与非气象因子进行协同分析,以揭示近17年福建植被的时空变化及其影响因子。结果表明:研究期内福建的EVI均值整体上升,从2000年的0.454上升至2017年的0.505,17 a间上升了11.2%,表明福建省的植被整体处于变好的状态,且在中部和西南部的变化最明显。相关分析表明,在研究期内,气象因子(气温和降水)对EVI变化的影响不显著,植被的变好主要为非气象因子的作用。EVI的提高主要得益于2003年福建省建设生态省后森林覆盖率的提高,并和2012年开始的水土流失治理有明显关系,这说明人类活动的积极作用对福建植被的变好起到了关键的作用。     

Combined effects of fabric air permeability and moisture absorption on clothing microclimate and subjective sensation during intermittent exercise at 27 degrees C

The present paper aimed at determining the combined effects of two different levels of air permeability and moisture absorption, in terms of clothing microclimate and subjective sensation, in resting and exercising subjects at an ambient temperature of 27 °C, a relative humidity of 50% and an air velocity of 0.14 m s^-1. Three kinds of clothing ensemble were investigated: (1) polyester clothing with low moisture absorption and low air permeability (A), (2) polyester clothing with low moisture absorption and high air permeability (B), and (3) cotton clothing with high moisture absorption and high air permeability (C). The subjects exercised for 10 min on a cycle ergometer at an intensity of 30% maximal oxygen uptake and then had a 10 min rest. This sequence was repeated four times. The main findings are summarized as follows: (1) The clothing microclimate humidity in the back area was significantly higher in A than in B, and in C than in B. (2) The clothing microclimate temperature in the chest area was significantly higher in B than in A, and in B than in C. (3) The clothing microclimate temperature in the back area was significantly higher in C than in B. (4) The clothing surface temperature was significantly higher in C than in B. (5) Although the positive relationships between the microclimate humidity and forearm sweat rate was significantly confirmed in all three kinds of clothing, the microclimate humidity at chest for the same sweat rate was lower in C than in A and B. (6) Although the positive relationships between subjective sensation and forearm sweat rates were significantly confirmed in all three kinds of clothing, the subjective discomfort seemed to be reduced more effectively in C than in A and B for the same sweat rate. These results were discussed in terms of thermal physiology and combined effects of air permeability and moisture absorbency of the fabrics.     

青藏高原1982~2015年FPAR时空变化分析

植被吸收利用太阳光合有效辐射比率反映了植被固碳释氧能力,根据青藏高原GIMMS NDVI3g（1982~2015年）和MODIS NDVI（2001~2015年）数据,采用非线性半理论半经验模型进行FPAR反演及时空变化分析。结果表明：①2001~2015年GIMMS NDVI3g和MODIS NDVI反演FPAR在空间分布上具有较高的一致性,相关系数为0.82（P<0.01）,年际变化趋势一致至少6年的区域占80%;②青藏高原FPAR受坡度和海拔影响较大,其中15~35坡度FPAR变化最快,700~2 100 m海拔区间FPAR值最大;不同坡向对应的FPAR除南坡方向偏低外其他方向差异不大。③1982~2015年青藏高原四季FPAR时空变化研究中,冬季FPAR年际变化最明显,约78.5%的区域表现为增长趋势;秋季FPAR下降区域最多,但超过71.5%区域变化不显著;④基于MODIS NDVI和GIMMS NDVI两数据反演的所有植被类型的FPAR都在2012年间出现小幅度下降趋势,且不同植被类型FPAR的年际变化趋势各不相同。     

Ergonomic planned supply in an automotive assembly line

The objective of this research is to identify the benefits of ergonomic improvements in workstations and in planned parts supply in an automotive assembly line. Another aim is to verify to what extent it is possible to create competitive advantages in the manufacturing area with reduction in vehicle assembly time by using technological investments in ergonomics with benefits to the worker and to the company. The Methods Time Measurement (MTM) methodology is chosen to measure the process time differences. To ensure a reliable comparison, a company in Brazil that has two different types of assembly line installations in the same plant was observed, and both assembly lines were under the same influences in terms of human resources, wages, food, and educational level of the staff. In this article, the first assembly line is called “new” and was built 6 years ago, with high investments in ergonomic solutions, in the supply system, and in the process. The other is called “traditional” and was built 23 years ago with few investments in the area. © 2010 Wiley Periodicals, Inc.     

HOW OP-20-G GOT RID OF JOE ROCHEFORT

ABSTRACT

In late October 1942, LtCmdr Joseph Rocherfort, USN, was dismissed from his job as officer in charge of the Navy's radio intelligence center in Honolulu. Trained in both Japanese language and radio intelligence, he had been sent there a little over a year before by OP-20-G, the element in naval communications in overall charge of radio intelligence. During that time he had seen his beloved Pacific Fleet in both defeat and victory. His contributions in radio intelligence in that short time were legendary among his colleagues in Hawaii and his services were so highly valued by the Commander in Chief of the Pacific Fleet, Admiral Chester Nimitz, that, after the American victory at Midway, he was recommended for a Distinguished Service Medal. This article describes how and why, so early in the war, this multi-talented naval officer lost his job in Hawaii and spent virtually the entire war outside the intelligence field altogether.