环境监测质量管理思考

环境监测是指通过对影响环境质量因素的代表值的测定,确定环境质量的污染程度以及变化的趋势。环境管理工作的基础是环境监测,也是必要的手段,能够准确、及时、全面地为环境管理、污染源控制、环境规划等提供科学依据,反映了环境监测质量的现状及发展趋势。本文阐述了环境监测质量管理的重要意义,并提出了提高环境监测水平的建议。     

环境监测质量管理思考

、环境监测是指通过对影响环境质量因素的代表值的测定,确定环境质量的污染程度以及变化的趋势.环境管理工作的基础是环境监测,也是必要的手段,能够准确、及时、全面地为环境管理、污染源控制、环境规划等提供科学依据,反映了环境监测质量的现状及发展趋势.本文阐述了环境监测质量管理的重要意义,并提出了提高环境监测水平的建议.     

浅析远程通信在环境监测技术的应用

环境监测技术在我国的环保工作中发挥着重要作用,它能够帮助我们掌握环境质量的实际状况,找出环保工作中存在的不足及问题,给环保工作的发展指引方向,还能够给环境决策和环境管理提供坚实的支撑.本文主要分析环境监测技术方案与应用,同时对环境监测的发展趋势也做出了研究,以期环境监测工作能够做的更好.     

环境监测概念

环境监测就是运用现代科学技术手段对代表环境污染和环境质量的各种环境要素（环境污染物）的监视、监控和测定,从而科学评价环境质量及其变化趋势的操作过程。环境监测在对污染物监测的同时,已扩展延伸为对生物、生态变化的大环境监测,环境监测机构按照规定的程序和有关标准、法规,全方位、多角度连续地获得各种监测信息,     

基于ZigBee无线传感器网络的大气环境监测系统

随着人们对生活环境质量的重视程度的不断提高,从而使得各种类型的环境监测系统也在不断的增多。常见的环境监测系统大多数采用的是RS-485、以太网、GPRS等方式进行通讯。上述方式往往存在着布线困难、费用高等特点,从而不易大面积的推广。本文设计的基于ZigBee的无线环境监测系统具有免授权频段、低功耗、耗资少、安全性高、灵活性强等优点。能够满足大多数场合的环境监控需求,达到了预期的设计目的。     

计算机技术在环境监控中的应用浅谈

环境监测控是环境管理和保护的重要组成部分,随着我国经济的迅速发展和小康社会的不断建设,人们对环境工作的效率、质量及透明名的要求不断提高。计算机技术的应用改变了传统环境监测手段,为当前我国环境监测注入了活力。过通过计算机信息化技术,对环境质量实施长期性、连续性的监测,使环境监控工作更加全面高效、科学精准。本文对计算机技术应用于环境监控的必然性、应用现状、功能三方面进行了探讨,以期为我国计算机环境监测工作提供一定的理论支持。     

基于虚拟仪器与总线技术的远程多点环境参数监测系统研究

环境监测是环境监理实施监督管理的耳目和手段,环境监测数据反映了环境质量状况情况,是环境预测、实时控制的基础.设计了一款以单片机为处理器,基于LabVIEW与RS485总线技术构成远程多点环境参数实时监测系统.以温度、湿度、光照度等环境参数为监测实例,详细介绍系统的组成及应用,验证了系统设计的可行性,实用性及灵活性.     

高校学生管理信息系统建设探析

科学的高校学生管理信息系统将大大地提升高校的管理工作效率,不仅能使高校的管理者能够真正地掌握学生的学习情况以及各个部门的运行情况,而且可以使高校的管理者能够及时地发现高校在运行过程中存在的问题.建立科学、完善的高校学生管理信息系统对于高校的高效运行十分重要的,然而,我国目前高校学生管理信息系统建设工作仍然比较滞后.因此,本文将通过对现阶段高校学生管理信息系统建设的现状分析,提出高校学生管理信息系统建设的重要意义,从而探讨如何加快高校学生管理信息系统建设的具体措施.     

环境监测中网关系统广泛接入机制研究

野外温湿度等环境参数监测与无线数据采集传输是物联网技术研究的热点,以ZigBee无线传感器网络为基础构建了环湖景点监测区域的环境监测系统。针对野外复杂环境下环境监测系统能够正常采集数据与监测环境的需要,对基于复杂环境中多种设备共同协作数据传输的网关系统广泛接入关键技术作了研究。研究结果表明,网关广泛接入机制的实现方法是可行的,具有广泛接入机制的网关能够提升环境监测系统的性能。     

关于GIS技术的测绘管理信息系统的设计研究

人类的活动75%都与地理位置有关,随着时代的发展,土地都逐渐地利用了起来。人类精心地为城市作规划,加快经济建设。但随着经济的迅速发展,带来的不仅是高收入,同时也带来了交通运输和环境方面的问题。地球只有一个,人类赖以生存的家园只有一个,不能一味地索取,人们要关爱我们的母亲——地球。人类要发展,也必须解决发展带来的问题。首先就要合理地利用土地,科学地对资源进行评价与管理。GIS(地理信息系统)的测绘管理信息系统对土地利用有很重要的作用。通过GIS(地理信息系统)的测绘管理信息系统和卫星遥感技术的结合,可以进行全球监测,时刻观察全球变化。GIS(地理信息系统)的测绘管理信息系统还可以收集、处理、管理、分析地理空间数据,这对合理利用土地有很重要的作用。除此之外,GIS(地理信息系统)的测绘管理信息系统对环境监测、经济建设、城市规划、交通运输等方面也有很重要的作用。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Technology innovation and process integrations for sub-100nm gate patterning

This paper presents a brief overview of the Applied Centura(R)DPS(R)system,configured with silicon etch DPS Ⅱ chamber, with emphasis on discussing tuning capability for CD uniformity control. It also presents the studies of etch process chemistry and film integration impact for an overall successful gate patterning development. Discussions will focus on resolutions to key issues, such as CD uniformity, line-edge roughness, and multilayer film etching integration.     

Complete approach to automatic identification and subpixel center location for ellipse feature

To meet the need of automatic image features extraction with high precision in visual inspection, a complete approach to automatic identification and sub-pixel center location for similar-ellipse feature is proposed. In the method, the feature area is identified automatically based on the edge attribute, and the sub-pixel center location is accomplished with the leastsquare algorithm. It shows that the method is valid, practical, and has high precision by experiment. Meanwhile this method can meet the need of instrumentation of visual inspection because of easy realization and without man-machine interaction.     

White organic light-emitting devices based on fac tris（2- phenylpyridine） iridium sensitized 5,6,11,12-tetraphenylnap -hthacene

We have fabricated the white organic light-emitting devices （WOLEDs） based on 4,4＇ -bis（2,2 -diphenyl vinyl）-1,1＇ - biphenyl （DPVBi） and phosphorescence sensitized 5,6,11,12,-tetraphenylnaphthacene （rubrene）. The device structure is ITO/2T-NATA （20 nm）/NPBX （20 nm）/CBP： x%Ir（ppy）3：0.5% rubrene （8 nm）/NPBX （5 nm）/DPVBi （30 nm）/Alq（30 nm）/LiF（0.5 nm）/A1. In the devices, DPVBi acts as a blue light-emitting layer, the rubrene is sensitized by a phosphorescent material, fac tris （2-phenylpyridine） iridium [Ir（ppy）3], acts as a yellow light-emitting layer, and N,N＇ -bis- （1-naphthyl）- N,N＇ -diphenyl -1, 1＇ -biphenyl-4,4＇ -diamine （NPBX） acts as a hole transporting and exciton blocker layer, respectively. When the concentration of Ir （PPY）3 is 6wt%, the maximum luminance is 24960 cd/m^2 at an applied voltage of 15 V, and the maximum luminous efficiency is 5.17 cd/A at an applied voltage of 8 V.     

小角度扩展相关性近似算法分析

本论文提出一种在多天线MIMO信道相关性建模中小角度扩展近似理论算法,并应用于分析MIMO系统性能。分析中分别对三种不同角能量分布情况下的空间相关性研发快速近似计算法,并同时提出双模(Bi-Modal)角能量分布情况下的近似运算。通过分析这些新方法的近似效率,可以得到计算简单、复杂度低、而且符合实际的MIMO相关信道矩阵,对系统级的快速高效计算法的研究和系统级的评估以及误差分析具有重要的意义。     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

A Versatile Mixed-Signal Pin Approach for Cost-Effective Test of Automotive ICs

Integrated circuits (ICs) intended for increasingly sophisticated automotive applications bring unique test demands. Advanced ICs for applications such as highly integrated automatic braking system (ABS) and airbag controllers combine high voltage digital channels, significant VI demands and precise timing capability. Along with continued missioncritical reliability concerns, the trend toward higher voltage operation and increased device integration requires specialized test capabilities able to extend across the wide operating ranges found in automotive applications. Among these capabilities, automotive test requirements increasingly dictate a need for a cost-effective versatile mixed-signal pin electronics with very high data rates reaching up to 50MHz with a voltage swing of-2 V to +28 V.     

A rigorous proof of MIMO channel capacity’s increase with antenna number

It is well known that adding more antennas at the transmitter or at the receiver may offer larger channel capacity in the multiple-input multiple-output（MIMO） communication systems. In this letter, a simple proof is presented for the fact that the channel capacity increases with an increase in the number of receiving antennas. The proof is based on the famous capacity formula of Foschini and Gans with matrix theory.     

Optical vibration and deviation measurement of rotating machine parts

It is of interest to get appropriate information about the dynamic behaviour of rotating machinery parts in service. This paper presents an approach of optical vibration and deviation measurement of such parts. Essential of this method is an image derotator combined with a high speed camera or a laser doppler vibrometer （LDV）.     

社长序言（英文）

正Happy New Year!As we step into a new year,we take a look back at the key feature topics covered in China Communications over the past 12 months and set out our expecta-