用于实时仿真的高阶Runge—Kutta方法

本文简要分析低阶实时仿真算法，构造实时的高阶（ｓ＝６，ｐ＝５）实时Ｒｕｎｇｅ—Ｋｕｔｔａ方法，分析了该方法的收敛阶条件和稳定性，并具体给出了三组实时仿真算法公式，数值试验结果表明，构造的实时高阶Ｒｕｎｇｅ—Ｋｕｔｔａ方法是可行的、有效的。     

基于流媒体技术的远程教育课件制作

浙江省农业科技远程教育培训系统在建设中应用了流媒体技术、宽带传输技术等当代先进技术，集成了图像、声音、文字等多媒体信息，具有传播范围广、不受时空限制、直观便捷、实时互动等综合优势，为开展农村、农民科技文化素质教育提供了新的思路和模式，可以更广泛地实现资源共享，更有效地发挥现有农业科技资源的集成优势，     

基于Web的油田集输中心平台控制系统的设计与实现

介绍了基于Web的油田集输中心平台控制系统的开发背景、系统的实现方案以及涉及到的一些关键技术.实践表明该方案可行、技术非常有效,并具有重要的参考价值.     

CAWS600自动气象站系统参数设置问题

介绍了地面测报业务软件和自动站实时监控软件的参数设置方法,以帮助有关人员快速、准确地设置好系统参数,确保系统的正常运行。     

N－乙烯基咔唑－丙烯酸共聚物的分析应用Ⅱ荧光熄灭法测定微量铅

Ｎ－乙烯基咔唑－丙烯酸共聚物的分析应用Ⅱ荧光熄灭法测定微量铅敖登高娃，赛音，盛显良，格日勒图（１．内蒙古大学化学系０１００２１，呼和浩特；２．内蒙古师范大学化学系０１００２０，呼和浩特；第一作者３７岁，女，讲师）关键词铅，Ｎ－乙烯基咔唑－丙烯酸共聚物...     

浅析数列极限定义

极限是学习高等教学的基础和工具，而数列极又是学习极限的基础，学好数列极限首先要对它的定义有深入的理解，本就此谈了自己的一些认识。     

中心性浆液性脉络膜视网膜病变眼底荧光血管造影分析

目前认为中浆的病理改变是脉络膜毛细血管通透性增强及视网膜色素上皮屏障功能的破坏。其眼底荧光血管造影表现主要为渗漏点、视网膜色素上皮脱离和神经上皮脱离。本文就以上内容分析了506例中浆的发病机转,并提出了中浆急性期、中浆迁延期、中浆间歇期和陈旧性中浆四种诊断类型。     

基于WEB的实时实物演示厅的实现

首先分析了目前电子商务系统中产品介绍方法的特点。着重描述了我们所开发的电子商务系统中产品实时演示厅的关键技术与实现方法。此展厅可以向客户展示真实产品，用户只要进入本地浏览器，就可在线观看产品的实时运行情况；并可通过浏览器控制该产品的运行。另外，可以通过浏览器控制展厅内的摄像头的转动，从而根据自己的需要观看产品的演示。     

Spatial and temporal variations of zooplankton composition and quantity distribution in the upper waters around Nansha Islands

This study aims to examine spatial and temporal variations of zooplankton species composition, density and biomass distribution and community structure, based on the data obtained from three separate cruises carded out in November 1997, April and July 1999. Results show that 244 species of zooplankton and 8 groups of planktonic larvae were identified, which were dominated by copepods, followed by amphipods, ostracods and medusae. The total species were 201 and 198 for the cruises of November 1997 and July 1999, respectively, and no obvious seasonal variation of species richness was observed. The distribution of zooplankton species richness decreased from pelagic to coastal waters. Average richness of species in each station was higher in the cruises of November 1997（62） and April 1999（61） than in the cruise in July 1999 （56）, which was mainly a result from the pelagic or coastal water mass movement made by the monsoon. Zooplankton in the upper waters （0--100 m） around Nansha Islands belonged to the typical tropic pelagic fauna, most of them were pelagic warm-water species, followed by coastal warm-water species and euryhaline warm-water species. The number of dominant species ranged from 5 to 7 in each cruise. No obvious seasonal succession of dominant species was ob- served. Sagitta enflata, Cypridina narni, Cosmocalanus darwinii, Pleuromamma gracilis and Echino-pluteus larva were the main dominant species. The average of zooplankton biomass and density in three cruises were 31, 32, 28 mg·m^-3 and 31, 39, 35 ind·m^-3, respectively. Copepods were the most abundant, followed by chaetognaths. Zooplankton high biomass distributed mainly in the northwestern waters around Nansha Islands, and generally occurred in the areas of oceanic front and upweUing. The main reason for zooplankton quantity without obvious seasonal variation was the relative steady temperature dynamics in the waters around Nansha Islands.