基于单站GPS数据的GPS系统硬件延迟估算方法及结果比较

从GPS数据中解算电离层TEC的最大误差源是硬件延迟。作者介绍了两种解算电离层TEC和硬件延迟的方法。利用单站的GPS双频数据,计算了2004年电离层TEC和硬件延迟,对两种方法得到的硬件延迟进行了比较,并且和欧洲定轨中心的公布结果进行了对比,同时分析了不同纬度台站数据解算硬件延迟的误差特点。结果表明:这两种方法均可以解算TEC和硬件延迟,结果是可靠的。解算的硬件延迟的标准偏差与观测站的纬度有关,在中国区域,纬度越低,估算的硬件延迟偏差越大,对这一情况进行了分析。     

异型机网络互连技术的设计与实现

简要介绍了以ＵＮＩＸ为操作系统的ＳＵＮ、ＳＧＩ系列工程工作站及ＭＣ６８０００系统与以ＤＯＳ为操作系统的ＰＣ机系统的互连，从而构成异型机及网间的互连通讯，达到数据共享，节省资源的目的。该方法实现简单，具有广泛的应用前景。     

二异氰酸酯与扩链剂的不同比例对聚氨酯性能影响的研究

本文在聚氨酯的合成过程中，减少扩链剂的用量，使过量的－ＮＣＯ基团与聚合物链上的ＮＨＣＯ上的氢反应，从而产生支化点，结果表明，减少扩链剂用量对聚氨酯的应力应变性能产生十分显著的影响，小角激光光散射的研究表明，产品的亚微观结构是无定形的。     

无源电力滤波器电路参数非线性约束优化

对偏调谐类单调谐滤波器提出了非线性的束优化模型，运用大系统理论协调优化单调谐滤波器和高通滤波器，实例计算表明，该方法是对以往单调谐滤波器设计计算方法的一大改进。     

The Reverse Hoelder Classes in Martingale Setting

In martingale setting, it has been shown that Ap weights can be factorized in terms of A1 weights. This factorization benefits many problems very much. ]n this paper, the new class of RH~ plays the same role for RHs, which makes the reverse HOlder inequalities hold with exponent s＞1, that the class A1 does for Ap class. Therefore, the Jones‘ factorization theorem for Ap weights was extended to include some information about the reverse HOlder classes. And it is the most convenient obiect in weight theory indeed.     

工业GPRS DTU的设计及其应用研究

随着信息技术的迅速发展。通信技术和网络技术促使了现场设备的网络化．分析了GPRS网络的特点，构建了基于GPRS的实时监控系统，并对GPRSDTU的实现提出了解决方案．最后。对其应用前景进行了展望．     

Characteristics of climatic trends and correlation between pan-evaporation and environmental factors in the last 40 years over China

Using the data observed by 62 Chinese Routine Meteorological Stations (CRMS) with long term radiation observation, the climatic trends and the relationship between pan-evaporation and its environmental factors are analyzed comprehensively. The results show that during the last 40 years, the relative humidity is uptrend in west China, downtrend in east China, and their extrema are 0.20%/a and -0.22%/a respectively; the precipitations of about 61% CRMS keep uptrend, its maximum can reach 10.52 mm/a^2 while the cloud amounts of about 79% CRMS keep downtrend slightly. About 98% CRMS display the air temperature uptrend, and the maximum is 0.11℃/a. About 76% CRMSdisplay the land surface temperature uptrend. About 87% CRMS show the daily range of temperature downtrend. The global radiations observed by about 85% CRMS and the 10 m wind speeds observed by about 77% CRMS hold downtrend. The annual pan-evaporations of about 66% CRMS hold descend trend, and the biggest descent reaches -24.9 mm/a^2. The pan-evaporation has good relationship with many environmental factors, but the relationship with the relative humidity is the best. All of the climatic trends respond to the global climate changes.     

Fine mapping of an incomplete recessive gene for leaf rolling in rice （Oryza sativa L.）

Genetic analysis and fine mapping of genes controlling leaf rolling were conducted using two backcrossed generations （BC4F2, BC4F3） derived from a cross between QMX, a non-rolled leaf cultivar as a recurrent parent, and JZB, a rolled leaf NIL of ZB as a donor parent. Results indicated that leaf rolling was mainly controlled by an incompletely recessive major gene, namely rl（t）, and at the same time, affected by quantitative trait loci （QTLs） and/or the environment. A genetic linkage map was constructed using MAPMAKER/EXP3.0 with eight polymorphic markers on chromosome 2, which were screened by BAS method from 500 SSR markers and 15 newly developed insertion/deletion （InDel） markers. The position of rl（t） was estimated with composite interval mapping （CIM） method using WinQTLcart2.5. Gene rl（t） was mapped between markers InDel 112 and RM3763, and 1.0 cM away from InDel 112 using 241 plants in BC4F2 population. To fine map r（t）, one BC4F3 line with 855 plants was generated from one semi-rolled leaf plant in BC4F2. Four new polymorphic InDel markers were developed, including InDel 112.6 and InDel 113 located between markers InDe1112 and RM3763. Based on the information of recombination offered by 191 rolled leaf plants and 185 non-rolled leaf plants from the BC4F3 line ,we mapped r（t） to a 137-kb region between markers InDel 112.6 and InDel 113. Homologous gene analysis suggested that r（t）was probably related to the process of leaf development regulated by microRNA.     

新时期加强村民道德建设的现实思考

村民道德建设作为公民道德建设的重要组成部分，越来越受到人们的关注。文章在充分认识加强村民道德建设重要性的基础上，有针对性地提出了加强村民道德建设的对策。     

基于神经网络模糊控制器的铣削过程智能控制

提出了一种新颖的神经网络模糊控制器,其模糊控制表由神经网络替代．控制器通过在线学习能自适应被控对象的变化,控制性能良好．将该控制器用于铣削过程控制,使铣削力在加工条件变化过程中始终保持相对稳定,从而提高了铣床的加工效率,并能保证加工质量,保护刀具．还给出了试验结果．