计算机房计费管理系统设计与实现

计算机计费系统是为了解决集中计算机机房的科学管理需要，实现帐务管理、机房监控、上下机管理、客户端管理和查询统计等管理功能，其目的是实现开放式机房的管理自动化。主要介绍计费管理系统所采用的主要技术方法以及利用Socket舜口Winsock实现TCP／IP协议的客户，月艮务器通信。     

计算机房计费管理系统设计与实现

计算机计赍系统是为了解决集中计算机机房的科学管理需要,实现帐务管理、机房监控、上下机管理、客户端管理和查询统计等管理功能.其目的是实现开放式机房的管理自动化.主要介绍计费管理系统所采用的主要技术方法以及利用Socket和Winseck实现TCP仃P协议的客户,服务器通信.     

机房上机预约系统的设计与实现

设计并实现的机房上机预约系统有教师、管理员、学生三个角色。教师角色功能主要为:机房预约、预约机房管理、个人课表查询等;管理员通过对机房、课程、学生信息、教师信息、班级信息、教学计划、学期等信息的管理及维护系统资源;学生拥有查询上机信息的权限。该系统实现了数据流的自动化与一体化,通过对机房信息的高效管理从而达到了纯人工管理所无法比拟的层次。该系统可望往嵌入式软件方面进行研究,使得系统更加方便化、实用化。     

广电机房动力环境监控的尝试与探索

概述 姜堰广电目前通过建设机房动力环境监控系统实现了机房入电、配电、精密空调、UPS、机房漏水、机房温、湿度、门禁及图像等项目的监控管理、告警派单、统计分析。主要通过现代数字采集、视频、智能控制技术,对机房环境、设备进行实时监测,通过异常告警、短信提示告警、历史查询、远程管理等手段实现信息集中存放统一管理的目的,以达到高效率、低成本的管理目标。     

DZK—1电视制作设备计算机管理控制系统

本文介绍了计算机网络和磁卡技术在电视台制作设备管理中的应用，解决了以往人工管理中存在的许多问题，使电视台制作机房管理趋向科学化，自动化，文章对管理控制系统的软件硬件构成及相关技术作了详细的介绍。     

计算机实验室的维护与管理

计算机实验室作为计算机教学的主要场所,承担着计算机辅助教学的重要任务。科学地管理计算机机房是关系到教学效果的重要前提。机房硬件维护是基础,而软件故障的排除及维护才是关键。这里通过公用机房的日常管理和维护实现对机房环境的保护．确保每台机器正常运行和实验课程顺利开展。     

关于高校计算机机房管理的几点探讨

本文从机房管理与教学实践出发,探讨了高校计算机机房硬件管理和软件管理所涉及的内容和方法,结合联想网络同传系统及其硬盘保护系统,重点介绍了构建机房计算机软件环境和软件使用维护的方法,为机房管理提供了有益的指导。     

浅谈机房库存经济化管理系统的设计

机房库存经济化管理系统能够实现用户对于库存基本信息及出入库信息的增、删、改、查等各种常规类操作,最大程度的节约成本,实现经济效益最大化。本系统采用双重加密技术来保证信息的安全保密性:密码加密,以及给不同的用户以不同的权限。机房库存管理系统能够对用户的操作进行跟踪,并对改变数据库原有数据的操作进行记录,为管理工作带来极大的方便。机房库存管理系统能满足多条件的查询,并能将查询结果生成报表。另外,系统对短线货品及超储货品进行预警,并能实现对数据库的备份和恢复。     

计算机机房的硬件建设与管理

高校计算机公共机房建设与管理的现状普遍不容乐观,信息技术和计算机硬件技术的发展对高校计算机公共机房的硬件建设与管理提出了更高的要求。本文以山西大学商务商院为例,在总结多年管理经验的基础上对公共机房的硬件建设及管理提出可行性建议。高校计算机公共机房不仅是高校进行教学活动的重要场所,还是丰富高校学生业余文化生活的重要阵地,其硬件设施的优劣和管理水平的高低,不仅体现高校教学质量的水平,而且影响高校的校园文化生活[1]。而公共机房又面临着设备更新、应用软件过多、病毒困扰等多重问题的影响[2],因此,高校计算机公共机房的建设与管理,值得研究与探讨。     

NOVELL网络管理应用于学生用机房的管理

本文较详细地介绍了Novell网络管理学生用机房的硬件配置以及规划与设计。     

On a wing and a prayer

Aircraft giants Boeing and Airbus are pinning their hopes on very different visions of how air travel will evolve in the coming decade.     

Building a in a flash supercomputer

A flash mob is a group of strangers, organized over the Internet, that comes together briefly, acts out a predetermined scenario-often something as simple as clapping for 30 seconds-and then disperses. A supercomputer is a very fast and powerful computer that outperforms most mainframes, at a cost, typically, of millions of dollars. Can a flash mob build a supercomputer? It can sure try, and so it did on 3 April at the University of San Francisco's Koret athletic center. The goal was to run the Linpack benchmark, a standard method of assessing the speed of supercomputers, to achieve a speed of at least 403 gigaflops (billion floating point operations per second). This would be fast enough to earn the system a place on the list of the world's fastest 500 supercomputers. The goal was not reached. The group reached just 180 gigaflops before it was time to pack up the computers and go home. However, even though the San Francisco effort fell short of speed goal, it did ignite imaginations.     

一年之间，物换星移

去年的这个时候,供货商们还在为生存而挣扎。如今,2009年的年报已经公布,许多供应商的年报业绩之好,就连最乐观的分析师也始料未及。这种变化的原因很简单：供应商们大幅削减成本,接下来是强劲的需求,这又导致了随后高企的设备利用率。     

Cooperative control of a human and a robot manipulator for positioning a cart on a frictionless plane

Robots may be expected to execute some tasks in cooperation with humans. Control systems for such robots should be appropriate to adapt to human characteristics in order to successfully accomplish the task. Pushing a cart on a frictionless plane in cooperation with a human is a basic example to such a task. To control the motion of an object from one point to another on a frictionless plane is impossible by only pushing in one direction without supporting it in the opposite direction, since as soon as the force is applied, the object will move without stopping its motion. In this paper, compliant cooperative positioning of a cart on a frictionless plane by a human and a manipulator is proposed using impedance control method with the parameters obtained from human–human cooperation.     

Analysis of a coaxial-to-waveguide adaptor including a discendedprobe and a tuning post

A field matching analysis of a coaxial-to-waveguide adaptor incorporating a disc-ended probe and a tuning post is presented. In this analysis, the tuning post is considered as a short-circuited second probe. A computer algorithm for calculating the input impedance of this structure is developed. This algorithm is used to investigate and improve the operation of a commercially available coaxial-to-waveguide adaptor     

Transmission-Line Properties of a Strip on a Dielectric Sheet on a Plane

The subject is a strip Iine formed of a strip and a parallel ground plane separated by a dielectric sheet (commonly termed "microstrip"). Building on the author's earlier papers all the significant properties are formulated in explicit form for practical applications. This may mean synthesis and/or analysis. Each formula is a close approximation for all shape ratios, obtained by a gradual transition between theoretical forms for the extremes of narrow and wide strips. The effect of thickness is formulated to a second-order approximation. Then the result is subjected to numerical differentiation for simple evaluation of the magnetic-loss power factor from the skin depth. The transition formulas are tested against derived formulas for overlapping narrow and wide ranges of shape. Some of these formulas are restated from the earlier derivations and others are derived herein. The latter include the second-order approximation for a narrow thin strip, and a close approximation for a narrow or wide square cross section in comparison with a circular cross section. Graphs are given for practical purposes, showing the wave resistance and magnetic loss for a wide range of shape and dielectric. For numerical reading, the formulas are suited for programming on a digital pocket calculator.     

基于智能手机压电基片上微液滴位置分析章

为了降低微流分析成本,该文提出了基于智能手机检测压电基片上目标微液滴方法,并开发出相应的应用软件,通过分析微液滴颜色信息和几何信息定位目标微液滴位置,结合分析时间获取微液滴输运速度。为验证提出方法的正确性,以5 μL黑色墨水溶液微液滴为研究对象,进行压电基片上微液滴识别和位置分析实验。结果表明,该文所提方法和开发的应用软件可识别和定位压电基片上微液滴,在功率为27.5 dBm时,第2~10 s段内微液滴输运速度为0.416 mm/s。     

The measurement of a large antenna using a spacecraft as a receiver

Two computational methods for obtaining the gain pattern of a large antenna using power levels recorded by a spacecraft are developed from the transmission equation. Nominally, the large antenna is linearly polarized while the spacecraft's receiving antennas are circularly polarized. Since the spacecraft has no attitude control system, the orientation of the receiving antennas is not known a priori nor its orientation the same from orbit to orbit. The first method relies on an independent spacecraft attitude determination system to furnish the orientation of the receiving antennas. It combines this information with receiving-antenna gain measurements to give the power level of the incident radiation. Losses due to polarization mismatch are taken into account, but polarization loss factors are not actually computed. The second method relates simultaneous measurements made by separate channels with separate receiving antennas. By solving a system of equations numerically, one can determine the direction of the incident radiation as well as its power level. This alleviates the need for an attitude determination system. These methods originated in the operations of the spacecraft NUSAT1 (northern Utah Satellite)