Serial communications programming in Windows95 with API functions

This paper introduces the usage of these functions. It presents the technique of how to program with them to perform the serial communications between a computer and other digital devices by the serial porst in Windows95. The related sample codes of the applications of this technique written in C++ programming language are also given. This technique is applied successfully to receive the data of the radio noise from a frequency monitor. Foundation item: Supported by the 863 High Technology Project of China (863-818-01-02) Biography: Wang Cheng-hu(1975-), male, Master candidate, research direction: ocean remote sensing.     

TP 和 GP 方案治疗晚期非小细胞肺癌的临床对照研究

目的观察紫杉醇联合顺铂（TP方案）和吉西他滨联合顺铂（GP方案）对临床III期、IV期非小细胞肺癌（NSCLC）的疗效和安全性。方法47例晚期NSCLC患者随机分成2组分别接受TP方案和GP方案进行全身化疗2个周期以上，其中Ⅲ期NSCLC患者30例，占63．8％，IV期NSCLC患者17例，占36．2％。结果TP和GP总的有效率分别为42．8％和40．5％，入组患者的不良反应都在可控制的范围。结论紫衫醇联合顺铂方案和吉西他滨联合顺铂方案均对临床III期、IV期非小细胞肺癌安全有效，均可作晚期非小细胞肺癌一线化疗方案。     

复合床人工湿地处理生活污水的实验研究

将表面流与潜流两种流态湿地相结合,处理生活污水.分析系统对CODMn,TP,TN的处理效果.研究结果表明,复合床人工湿地对有机物、氮、磷都有很高的去除率;进水中TN,TP的浓度变化对出水中氮磷含量影响不大,系统对氮磷有一定的抗冲击能力.     

L2TP隧道协议安全性问题的研究

介绍了L2TP隧道协议的系统结构，详细分析了L2TP协议中存在的安全隐患，针对L2TP构建的主动式隧道和被动式隧道的特点，提出了利用IPSec，并允许L2TP向IPSec的过滤规则中添加过滤规则的机制，为L2TP协议提供安全保护的方式和方法。     

A new evolutionary algorithm based on the decimal coding

Traditional Evolutionary Algorithm (EAs) is based on the binary code, real number code, structure code and so on. But these coding strategies have their own advantages and disadvantages for the optimization of functions. In this paper a new Decimal Coding Strategy (DCS), which is convenient for space division and alterable precision, was proposed, and the theory analysis of its implicit parallelism and convergence was also discussed. We also redesign several genetic operators for the decimal code. In order to utilize the historial information of the existing individuals in the process of evolution and avoid repeated exploring, the strategies of space shrinking and precision alterable, are adopted. Finally, the evolutionary algorithm based on decimal coding (DCEAs) was applied to the optimization of functions, the optimization of parameter, mixed-integer nonlinear programming. Comparison with traditional GAs was made and the experimental results show that the performances of DCEAS are better than the tradition GAs. Foundation item: Supported by the National Natural Science Foundation of China (No. 69703011) Biography: Dong Wen-yong (1973-), male Ph. D. candidate, research direction: parallel algorithms, evolutionary computation, computer simulation.     

A subfossil chironomid-total phosphorus inference model for lakes in the middle and lower reaches of the Yangtze River

Quantitative environmental reconstruction using subfossil chironomid has attracted much attention in recent years[1]. Consisting of about 400 genera, chi- ronomids (Diptera: Chironomidae) are found in nearly all freshwater bodies[2]. They are holometabolo…     

参数有限制条件下最优同变点预测量的改进

考虑了在位置分布族与尺度分布族中,当未知的分布参数含有限制条件下,对参数无限制下给出的未知随机变量的最优同变点预测量进行改进。在一定条件下,利用IERD方法构造一族改进后的点预测量。     

泗河水体氮磷空间分布及富营养化评价

分析了泗河水体中TN和TP的空间变化规律,利用对数型幂函数普适指数公式对其水体营养状态进行了评价.结果表明,泗河水体中TN的平均质量浓度为6.22mg·L-1(NO-3-N占34.20%),TP为0.33mg·L-1.泗河水体中氮、磷空间分布特征明显,TN和NO-3-N的空间分布比较一致,均由上游开始先升高后降低的趋势,而NH+4-N稍有不同,无明显的变化趋势;TP和SRP含量由上游开始先降低后升高,分别至泗河大桥断面(1-8#)和金口坝断面(1-9#)达到最高值,然后又逐渐降低.总体来看,泗河处于"富"营养状态(EI=48.757).其中,3个断面(15.80%)处于"中"营养状态,13个断面(68.42%)处于"富"营养状态,3个断面(15.80%)处于"重富"营养状态.综合分析表明,工业废水和生活污水的点源污染是泗河污染的主要来源,畜禽养殖和农业面源污染应引起高度重视.     

极限事务处理技术初探

极限事务处理是在廉价的、标准化的硬件和软件平台上,基于分布式系统架构来实现大容量、业务关键型的事务处理应用,本文对两种发展中的极限事务处理技术进行了探讨。     

EM固定化技术在人工湿地污水净化中的应用研究

本研究在龟背竹和基质(陶瓷厂废渣)组成的人工湿地基础上,采用人工湿地强化手段,分析了EM固定化技术在提高人工湿地的净化效能以及扩大其应用范围的可能性。结果显示:(1)在污水COD浓度为509mg.L-1时,有EM的人工湿地类型对提高人工湿地污水COD净化效果不显著;(2)在污水铵态氮浓度为35mg.L-1,总磷浓度为3.3mg.L-1时,EM固定化技术能显著提高污水中NH4+-N和总磷的去除效率。(3)基质在各方面作用显著。