基于CTI技术的守时系统故障报警实现

介绍了计算机电话集成(CTI-Computer Telephony Integration)技术在守时系统故障自动报警中的应用。简要介绍了构成报警系统的两个关键产品，电话语音卡和TTS(Text-To-Speech)，详细讨论了ActiveX控件(Phonic．OCX)编程接口的一系列事件和方法以及由此而开发的故障报警模块。该模块不仅用于守时主系统的故障报警，也将用于电源系统、钟房环境监控系统的故障报警。     

An optimized method for automated analysis of algal pigments by HPLC

A recent development in algal pigment analysis by high-performance liquid chromatography (HPLC) is the application of automation. An optimization of a complete sampling and analysis protocol applied specifically in automation has not yet been performed. In this paper we show that automation can only be successful if the various methodological aspects of the sampling and analysis protocol are considered in coherence. We introduce an optimized protocol that involves freeze-drying of the sample, subsequent extraction in 90% acetone and the application of water-packing during analysis. The method was evaluated on both natural plankton populations and a broad spectrum of microalgal cultures: Thalassiosira weisflogii (Bacillariophyceae), Emiliania huxleyi (Prymnesiophyceae), Phaeocystis globosa and Phaeocystis antarctica (Prymnesiophyceae) and Pyramimonas sp. (Prasinophyceae). Whereas pigment extracts were unstable in methanol, with recorded chlorophyll a losses from 10% to 60% per day, pigment degradation rates in acetone were generally less than 1% over 18 h storage in the autosampler (4 °C). In addition, it was found that the extraction efficiency of acetone significantly increased upon freeze-drying prior to extraction. Increases as high as 50–60% were measured in P. antarctica. The application of water-packing of the sample during injection resulted in improved peak shape and peak separation, without diluting the pigment concentrations. Automation is especially beneficial for application in the field, when mixed algal assemblages and low biomass put a high demand on the sensitivity as well as reproducibility of the method.     

土地利用规划电子政务系统的设计与实现

本文在分析了电子政务的内涵和作用的基础上,阐述了建设土地利用规划电子政务系统的必要性。依据国土资源电子政务系统建设目标和规范,在MapGuide平台上应用办公自动化、GIS、Oracle数据库等技术,确定了系统的总体设计。完成了土地利用规划电子政务系统的建设,实现了规划和国土资源管理的公平、公开、公正和公信,促进了规划和国土资源管理的科学化和规范化,大大提高了土地利用规划工作的效率。     

政府办公自动化系统建设和应用浅谈

本文简要地介绍了办公自动化的发展过程,分析了其常用的功能、特点,以及内容分类,论述了目前办公自动化系统的技术支撑和实现,并指出政府办公自动化系统在开发和应用中存在的问题和解决思路。对系统的推广使用具有一定的参考意义。     

地下管线探测工程的资料自动化整理

地下管线探测工程一般分为野外探测和室内资料整理两阶段。内业整理包括成果表的编制、管线综合分布平面图和管线数据库。由于管线探测工程数据多,为了充分利用外业探测成果,应用Visual Basic 6.0(VB6)开发了一套地下管线管理信息系统(UTMIS),该系统实现了地下管线探测工程内业整理的自动化,极大地提高了工作效率数据精确度。     

开发MapObjects为城市绿地管理服务

从控件技术出发，介绍了对象链接与嵌入技术—Activex控件技术，并将GIS控件MapObjects应用到长春市城市绿地管理领域中。开发出的长春市城区绿地地理信息系统具有地图管理和信息查询及修改功能，实现了地图的放大、缩小、平移以及由空间查属性和由属性查空间的双向查询功能，并以多媒体形式展示长春市绿化情况，为长春市实现科学管理绿地提供了技术支撑工具。     

毫米波雷达云回波的自动分类技术研究

毫米波雷达在云探测方面比厘米波天气雷达和激光雷达具有显著优势,可获得更多的云粒子信息,是研究云特性的主要遥感探测设备。为了开展对毫米波雷达探测的云回波进行自动分类的研究,利用161次云回波的个例数据,统计得到了卷云、高层云、高积云、层云、层积云和积云6类云型的特征量和其他参量的数值范围,利用分级的多参数阈值判别方法,达到了自动分类的目标,通过与人工分类的初步验证,两种分类结果的一致性达到84%,其中,层云和积云的识别一致较低的原因在于样本数据有限,仅有6次层云和8次积云的个例样本数据。通过更多样本的处理,提取的特征参量更可靠,自动分类的准确率会得到提高,以便将基于毫米波雷达的云分类技术应用于将来的云观测自动化业务。      

基于LabVIEW的电机调试软件系统

介绍了图形化编程语言LabVIEW的特点,重点介绍了如何利用LabVIEW开发平台设计实现一个电机调试软件系统。被调试目标是以Lattice公司的XP系列的FPGA芯片为核心,以无刷电机为控制目标的系统。软件通过编程实现导入Excel后再经串口通信把电机的转矩、加速度、步数等关键参数一次性送至FPGA芯片进行调试,并且能实时修改参数,使得调试快速、直观、利于保存。为LabVIEW在工程上的灵活应用提供了一种新的方法和思路。     

海上设施自动化系统软件认可流程与技术要求研究

随着计算机及通信技术的发展,海上设施自动化水平的不断提高,海上设施运营的安全可靠性越来越依赖于自动控制系统,尤其是软件部分。由于软件本身在设计和开发中可能存在的缺陷引起系统故障或失效,将给设施及利益方带来不可估量的损失。文章结合IEC61508系列标准、ISO9000—3标准,针对自动化系统软件有关要求和国际船级社协会及船级社等机构有关规范和标准的内容进行分析研究,系统地分析总结出海上设施软件的认可流程及对应技术要求,为我国海工装备设计制造业提供指导。     

Application of AMD to the Determination of Cropprotection Agents in Drinking Water. Part III: Solid Phase Extraction and Affecting Factors Anwendung der AMD-Technik zur Bestimmung von Pflanzenbehandlungsmittel-Wirkstoffen im Trinkwasser. Teil III: Festphasenextraktion und ihre Einflußfaktoren

The more sensitive an analysis method the more care must be given to sample preparation. Solid phase extraction (SPE) onto RP 18 phases has established itself as a general purification and enrichment technique for trace components in aqueous samples. Various factors may thereby influence the recovery rate. For example, the ratio amount of sorbent and sample volume should be taken into account to avoid breakthrough of the investigated substance. Extracting phenylurea herbicides from drinking water, the ratio should be 1 g RP 18 sorbent per 1 L water sample. Concerning the flow rate for the fungicides procymidone, vinclozolin, and iprodione, the recovery rate decreases using higher flow rates than 3 or 6 mL/min. In the case of phenylurea herbicides, a flow rate of 10 or 14 mL/min showed best results. Even the coefficient of variation is below ± 5% at these flow rates. Furthermore, the company dependence should be considered because the recovery rate might differ by up to 40% using the nominally identical material. The same applies to the batch dependence of quality from the same company. The concentration of the eluate must also be monitored and carried out with great care to avoid decreasing the recovery rate. Considering these factors of influence, SPE is a very useful tool in sample preparation, particularly if an automated system is used.