共查询到20条相似文献,搜索用时 468 毫秒
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一、概述长城3+网络系统自成体系,其网络产品包括长城386网络服务器,长城 ELINKI 网络卡和长城汉化3+网络系统软件。长城3+网络产品是中国长城计算机(深圳)公司专门面向国内用户而开发研制出的新一代网络产品。充分考虑了国内用户的特点,同时搏取国外同类产品之所长,具有卓越的性能价格比。长城3+网络系统低层遵循 IEEE802.3标准,高层以通用 MSDOS 为基础,采用 Microsoft 的 Redirector并仿真 IBM 的 NETBIOS,其应用程序极为丰富,支持目前几乎所有的多用户网络应用软件,如 DBASEⅢPLUS,FOXBASE 等网络数据库。长城3+网络提供 相似文献
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《Calphad》2020
The phase diagram of LiNO3–KNO3 system was investigated with differential scanning calorimetry. Phase transitions data of LiNO3–KNO3 system were obtained. Using the measured phase equilibrium data as well as other available phase equilibrium and thermodynamic data in literature, the thermodynamic optimization of parameters for all phases and compounds in the LiNO3–NaNO3–KNO3 system was performed. The Modified Quasichemical Model was applied for the liquid phase, and Compound Energy Formalism was used for the NaNO3–KNO3 solid solutions. The compound KNO3·LiNO3 was treated with Neumann-Kopp rule. The optimized parameters were used to predict the phase diagram of LiNO3–NaNO3–KNO3 ternary system and the predicted ternary invariant points were experimentally verified. 相似文献
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Exact three-wave solutions including periodic cross-kink wave solutions, doubly periodic solitary wave solutions and breather type of two-solitary wave solutions for the (3+1)-dimensional Jimbo–Miwa equation are obtained using the generalized three-wave method. It is shown that the generalized three-wave method, with the help of symbolic computation, provides an effective and powerful mathematical tool for solving high-dimensional nonlinear evolution equations in mathematical physics. 相似文献
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本文重点通过:校园数字化概述,数字化校园的发展阶段和趋势,3+N+1架构,数字化校园3+N+1解决方案的特点等几个方面来阐述了网络数字化校园3+N+1解决方案。 相似文献
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In this work, we investigate a (3+1)-dimensional generalized B-type Kadomtsev–Petviashvili equation. Based on the simplified Hirota bilinear method, we first construct its soliton solutions. Meanwhile, we correct the formula of N-soliton solution for this equation. On the basis of these solitons we further calculate its lump solutions, periodic waves. Meanwhile, rogue waves as well as interaction solutions of this equation are also obtained by a direct algebraic method. Some figures are given to display the behavior of these solutions. 相似文献
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Andrew Chi-Chih Yao 《Acta Informatica》1978,9(2):159-170
Summary It is shown that ¯n (N), the average number of nodes in an N-key random 2–3 tree, satisfies the inequality 0.70 N < ¯n(N) <0.79 N for large N. A similar analysis is done for general B-trees. It is shown that storage utilization is essentially ln 269% for B-tree of high orders.This work was done while the author was at University of Illinois, partially supported by NSF Grant GJ 41538. The preparation of this paper has also been partially supported by NSF Grants MCS 72-06336 A04 and MCS 72-03752 A03 相似文献
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笔者在一个基于3~+网的综合物资管理系统的设计中,设计并实现了一套采用FoxBASE~+作为软件支撑环境的安全性对策。其主要措施如下: 1) 为每个确定的用户配置一张专用引导盘,该盘除装有用以启动机器和系统的所有必须文件外,还有一个密钥文件。系统软件和网络服务软件等的加载通过AUTOEXEC.BAT来实现,并自动链接到相应的私有目录和共享、共用目录。 相似文献
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《Calphad》2019
Critical evaluation and optimization of the Fe–V–O ternary oxide system was carried out based on all the available phase equilibria and thermodynamic property data at 1 atm total pressure. The Fe3O4–FeV2O4 spinel solid solution was described within the framework of Compound Energy Formalism considering the cation distribution between tetrahedral and octahedral sites. The wüstite phase, corundum phase, and VO2 solid solution were described using a simple random mixing model. The Modified Quasichemical Model was used to describe liquid oxide solution in consideration of all multivalence states of Fe and V (Fe2+, Fe3+, V2+, V3+, V4+ and V5+). The variation of phase equilibria depending on the oxygen partial pressures and thermodynamic data in the system were well reproduced in the present study. 相似文献
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本文介绍了一种在NOVELL网中使用3+专用服务器的方法,使得早期被淘汰的3+专用服务器做为NOVELL网的数据备份部件而被充分利用,节省了开支。 相似文献
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<正> 电子工业部六所微机系统开发部开发的3~+实时通信远程中文网络于1986年12月1日通过了电子部计算机与信息局的技术鉴定。鉴定会由计算机与信息局系统处主芹生处长任鉴定委员会主任,清华大学计算机系副教授张公忠任副主任委员,总参61所刘德贵高级工程师等6人任委员。共有35个单位48人参加了鉴定会。鉴定会共审查通过5项技术成果。第一项是3~+远程中文网络的汉化。汉化的3~+软件具有全面、彻底、使用方便等优点,更能满足用户的要求。 相似文献
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向行业发力,是CA拓展中国市场的重要策略。电信行业,成为CA近年来的重点投入领域。在2004年中国国际通信设备技术展览会上,CA搭建了210平米的展台,是CA历年参与电信展中面积最大的一次,也是本次通信展面积最大的展位之一。电信行业目前正在进行大量的业务系统改造和新业务系统的建设,业务带来的安全问题是电信行业目前关注的焦点。CA特别推出电信行业两大方案—安全管理中心解决方案和综合网管解决方案。CA产品市场经理李世伟告诉记者,目前,电信网络包括大规模的客户服务、账务、市场分析、ERP等企业支撑系统,这些关键应用的管理、简… 相似文献
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