A communication security protocol of mobile agent system

The security issues of mobile agent system have embarrassed its widespread implementation. The paper analyses communication security threats and countermeasures of mobile agent system and proposes a communication security protocol of mobile agent system. It provides multifactor authentication, encryption transmission, and integrity protection of mobile agent.     

An equivalency condition of nonsingularity in nonlinear semidefinite programming

<正> In this paper,an equivalency condition of nonsingularity in nonlinear semidefinite programming,which can be viewed as a generalization of the equivalency condition of nonsingularity for linearsemidefinite programming,is established under certain conditions of convexity.     

黑丰一号苦荞品种及其栽培技术

山西佳鑫实业有限公司开发的"雁门清高"牌系列苦荞产品,迎合市场的需求,畅销国内外,同时带动"左右平"一带苦荞种植业的发展.这一带种植的苦荞品种主要是黑丰1号,栽培方法大部分是老传统,很不科学,鉴于此,特介绍该品种及其丰产栽培技术.     

A 65-nm 1-Gb NOR floating-gate flash memory with less than 50-ns access time

This paper presents a 65-nm 1-Gb NOR-type floating-gate flash memory, in which the cell device and chip circuit are developed and optimized. In order to solve the speed problem of giga-level NOR flash in the deep submicron process, the models of long bit-line and word-line are first given, by which the capacitive and resistive loads could be estimated. Based on that, the read path and key modules are optimized to enhance the chip access property and reliability. With the measurement results, the flash memory cell presents good endurance and retention properties, and the macro is operated with 1-las/byte program speed and less than 50-ns read time under 3.3 V supply.     

Integral-type tests for goodness-of-fit

<正> A family of integral-type goodness-of-fit tests is investigated.This family includes someexisting tests,such as the Cramér-von Mises test and Anderson-Darling test,etc.The asymptoticdistributions of the tests in the family under the null and local alternative hypotheses are established.The almost sure convergence under a fixed underlying distribution is obtained.Furthermore,simulationsare conducted to compare the powers of the tests in the family.Simulation results show that fordifferent alternatives,the more powerful tests are different,and the parameter λ has great influence onthe tests in small sample cases.     

新疆某铜矿氧化铜矿石浸出小型试验研究

针对新疆某铜矿矿石性质特点,分别进行不同方案酸浸小型试验.推荐堆浸工艺进行可行性研究,堆浸铜浸出速度较快,同样粒度情况下铜浸出率较高、耗酸低、铁浸出率也较低,且细泥产生的干扰也小.     

给水管网优化布置的探讨

以单位供水量的年折算费用作“权”值，利用狄克斯特拉算法研究给水管网布置的优化问题     

高温超导体Dy_(1-x)Pr_xB_(a2)Cu_3O_(7-δ)的磁弛豫研究

本文通过磁驰豫实验研究发现，Pr的掺杂对提高高温超导体的磁通钉扎能力有明显的作用．     

二碘化钐(SmI_2)在有机合成中的应用

二碘化钐（ＳｍＩ２）作为单电子转移试剂具有多种反应性能．并且可发生多种形成碳—碳键的新合成反应．本文就近几年二碘化钐在形成碳—碳键的有机合成中的应用进行评述．     

多媒体CAI的理想模式

本文分析了国内ＣＡＩ应用的现状及发展趋势。