可编程控制器在生产流水线控制系统中的应用

介绍一种应用于生产流水线的顺序控制和温度控制的ＰＬＣ控制系统，并给出该系统的主要功能，Ｉ／Ｏ扩展硬件配置和系统的软件设计要点。     

Addition Sequence Method of Scalar Multiplication of Elliptic Curve over OEF

A new elliptic curve scalar multiplication algorithm is proposed. The algorithm uses the Frobenius map on optimal extension field (OEF) and addition sequence. We introduce a new algorithm on generating addition sequence efficiently and also give some analysis about it. Based on this algorithm, a new method of computing scalar multiplication of elliptic curve over an ()EF is presented. The new method is more efficient than the traditional scalar multiplication algorithms of elliptic curve over OEF. The comparisons of traditional method and the new method are also given.     

Mesoscale eddy effects on the wintertime vertical mixing in the formation region of the North Pacific Subtropical Mode Water

Mesoscale eddy effects on the wintertime vertical mixing in the formation region of the North Pacific Subtropical Mode Water （NPSTMW） are studied using hydrographic data from Argo profiling floats deployed in the Kuroshio recirculation region in February and March of 2001. Anticyclonic （warm） eddy enhances the wintertime vertical mixing and results in the deep mixed layer and the deep thermocline. Consequently, a large volumetric water mass with low potential vorticity corresponding to the prototype of NPSTMW tends to be formed. By contrast, cyclonic （cold） eddy is unfavorable for the vertical mixing process and halts the deepening of the mixed layer and thus the formation of mode water. Further analysis shows that cyclonic eddies prevail in the late 1990s in the formation region of NPSTMW, which lead to significant suppression of the wintertime vertical mixing （96-98） and thus are unfavorable for the formation of NPSTMW; while the situation is completely reversed in the early 1990s （93-95）.     

路由器OSPF协议的扩展

阐述了路由器中OSPF协议的扩展，通过对QoS路由表算法的描述，分析了算法的合理性和可行性以及适用的范围。     

Late Mesozoic metamorphic core complexes: new constraints on lithosphere thinning in North China

Metamorphic core complexes (mcc’s) are among the most prominent structural styles of lithosphere extension and thinning during late Mesozoic in North China. In this paper, the geometrical, kinematic and age characteristics of some of the mcc’s, e.g. Liaonan, Waziyu (Yiwulüshan), Yunmengshan, etc., are discussed. Some common characteristics, such as kinematic polarity, geometric asymmetry, occurrence over a time span, scattered and isolated distribution, and progressive development, can provide direct constraints on the regional lithosphere extension and thinning in North China, which does not favor the prevailing plume model，a general delamination model or extensional collapse of overthickened orogenic crust. We argue that several aspects, such as the kinematic polarity at depths during lithosphere extension, gradual break-up of lithosphere plate, relationship between magmatism and regional extension, and coeval activity of mcc’s and Tan Lu fault, should be taken into consideration when constructing a more reasonable model for lithosphere extension and thinning in North China.     

Fuzzy Lindelof空间

证明了Fuzzy Lindelof性质是Lindelof性质的良扩张,并讨论了Fuzzy Lindelof空间的遗传性质和映射性质.     

Excellent 扩张环上Gorenstein投射模的性质

环论主要讨论其结构及分类,近年来特别对Gorenstein环的结构与分类以及维数不变量的研究很多,本文在Excellent扩张环上对Gorenstein投射模在两个环上的性质进行了比较.给出结论:若环S是环R的Excellent扩张,则模sM是G-Proj(Gorenstein投射模)的充要条件是sM是G-Proj,且模M作为S模和M模其Gorenstein投射维数相等,即GpdsM=GpdRM.     

线性约束下双反对称矩阵扩充及其最佳逼近

首次提出并讨论了一类带有线性约束的双反对称矩阵扩充问题,得到了问题有解的充分必要条件,并给出了解的一般表达式.此外,还给出了解集合中与给定矩阵的最佳逼近解的表达式.     

可拓评判在心理健康分析中的应用

应用可拓学的理论和方法 ,对心理健康的因素进行了分析 ,建立了心理健康评价的物元模型 ,为心理健康的评价提供了一种新的科学方法     

L,S波段宽频带、低相噪混频锁相频率合成器

分析了宽频带、低相噪锁相频率合成器的设计方法,并给出宽频带、低相噪频率合成器的设计方案.采用分段混频分频PLL频率合成器,实现了基于大规模锁相集成芯片Q3236的宽带锁相频率合成器.其输出频率为1 000～2 160 MHz,频率步进20 MHz,相位噪声优于-98 dB/Hz(偏离载频1 kHz处),杂散抑制优于60 dB,输出功率Pm＞8 dB.测试结果表明,该设计有效地扩展了信号带宽,达到了极低的相位噪声.