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本文从装备全寿命管理思想出发,提出了通用型交互式电子技术手册系统的设计思想.并根据装备管理过程中各类用户的不同需求,设计系统总体框架,对相应的实现技术做了说明.系统摆脱了原有交互式电子手册设计中采用的局部改造和重新设计的思维定式,提出了系统统一管理、装备全程维护的新思路,具有一定的实践意义. 相似文献
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本文讨论了一种以Linux操作系统为开发平台,基于USB2.0接口技术和MPEG4视频流硬件编码压缩技术实现的远程网络视频采集、存储和传输系统的设计和实现.全面介绍了系统软硬件构成,USB客户端设备驱动设计和系统应用软件设计及采用的一些关键技术和策略,并对该系统应用前景做了一些初步探讨. 相似文献
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提出了一种以Android 智能手机为终端的视频监控系统的设计与实现方案,文章首先阐述了系统整体的硬件平台和结构框架.然后对系统各个模块的功能进行了详细的分析和设计.并对各个模块的关键技术做了详细的说明. 相似文献
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讨论了目前人员综合管理系统设计过程中存在的一些主要矛盾和问题,给出了一些解决的建议,并就其他人员综合管理系统做了简要介绍,对基于Webbuilder的人员综合管理系统设计架构和开发流程做了详细阐述. 相似文献
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客车空调正向着自动化、智能化方向发展.根据实际需求,在空调控制器的工作原理和设计基础上对客车空调微处理器硬件系统进行了研究,并对关键环节做了详细分析.首先在客车空调总体设计上进行改进,然后以单片机作为客车空调控制器的核心部件.该设计能够对各种模拟信号进行处理,实现对客车空调的控制.经过分析表明,系统整体设计合理、性能可靠,实现了预期的设计目标. 相似文献
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介绍了以AT90S8515为核心、磁场强度自动检测系统的硬件组成,并对各部分原理做了详细的阐述.结构简单、成本低是该设计的最大特点. 相似文献
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用Java设计的基于三层结构的答疑系统 总被引:1,自引:0,他引:1
介绍了一个用Java进行设计的基于三层结构的答疑系统,用于辅助日常教学工作.系统由客户服务器模式和浏览器服务器模式构成,包括答疑、提问和自测等各个功能模块.对系统的数据库访问及在其间存在的安全性问题做了探讨,对系统的数据通信处理问题以及关于Java的双通道Socket通路的实现办法和机制进行了详细说明,同时对三层结构的答疑系统在服务器端和客户端的消息设计等一些关键技术做了具体介绍,对系统的用户界面如教师答疑界面、学生提问等一些重要界面进行了介绍,并给出了系统开发重要环节的设计过程和系统最后运行结果的一些重要界面.测试结果表明,系统运行稳定、结果准确、能够对日常的教学工作起到一定的帮助作用. 相似文献
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Cybernetics and Systems Analysis - 相似文献
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V. I. Donskoy 《Cybernetics and Systems Analysis》2012,48(2):233-241
The paper presents a general approach to the evaluation of the complexity of classes of algorithms, so-called pVCD-method. To develop this method, all the examined families of models of empiric generalization were restricted to classes
implementable on computers and, wider, by examining their partially recursive representations. Within the framework of the
algorithmic approach, the concept of Kolmogorov’ complexity of algorithms for the recognition of properties or the extraction
of regularities is proposed. The method proposed to evaluate the nonrandomness of the extraction of empirical regularities
is based on this concept. 相似文献
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Computer-aided analysis of autoradiographic films of DNA fragments is presented. The Powell least-squares procedure is used for optimization of parameters for components of complex densitometric curves. Since each densitometric spectrum may be divided for several non-overlapped blocks of bands, there is no upper limit on the number of parameters which must be optimized. Eight shapes for the component bands are utilized: symmetric and asymmetric Gauss and Cauchy functions, direct, symmetric and asymmetric product of Gauss function and inverse of Cauchy function, and log-normal function. The probability of DNA cleavage is calculated with correction for multiple cuts. The methods presented was applied to detailed analysis of densitometric spectra of a 21-bp DNA restriction fragment and allowed for direct correlation between structural microheterogeneity of DNA and the resulting cutting pattern. This method should facilitate the analysis of densitometric data from antibiotic-induced cleavage of DNA and footprinting experiments. 相似文献
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《Computers & Mathematics with Applications》2001,41(5-6):571-578
In this paper, we study the semicycles of oscillatory solutions of the delay difference equation yn+1 − yn + pnyn-k = 0, where pn is a sequence of nonnegative real numbers and k is a positive integer. Upper bound of numbers of terms of semicycles are determined in the case when Our results improve and complement known results in literature. 相似文献
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The problem to find a 4-edge-coloring of a 3-regular graph is solvable in polynomial time but an analogous problem for 3-edge-coloring is NP-hard. To make the gap more precise, we study complexity of approximation algorithms for invariants measuring how far is a 3-regular graph from having a 3-edge-coloring. We show that it is an NP-hard problem to approximate such invariants with an error O(n1−ε), where n denotes the order of the graph and 0<ε<1 is a constant. 相似文献
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《Computers & Mathematics with Applications》2006,51(3-4):451-466
In spite of being a classical method for solving differential equations, the method of variation of parameters continues having a great interest in theoretical and practical applications, as in astrodynamics. In this paper we analyse this method providing some modifications and generalised theoretical results. Finally, we present an application to the determination of the ephemeris of an artificial satellite, showing the benefits of the method of variation of parameters for this kind of problems. 相似文献
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讨论了几种实用的计算机辅助课表编排技术及在实际编排中的应用。应用分析表明,采用分批与或图搜索和分批优化的匈牙利算法相结合的方法,在计算机辅助课表编排中是行之有效的。 相似文献