关于加强大学生传统美德教育的思考

当前我国正处于体制转轨、社会转型和文化嬗变时期,在这一特殊的历史时期,必然会给大学生的价值取向和道德选择带来了很大的影响和冲击.一方面,他们强调自我价值、主体意识、奋斗精神,注重竞争与参与,追求民主与平等;另一方面,由于受社会上不良现象的影响,部分大学生滋长了各种各样的消极思想.面对这种新形势、新情况,我们应在强化对大学生进行马克思主义教育的同时,充分挖掘中华民族优秀文化和伦理道德的价值,加强对大学生进行传统美德教育,切实提高大学生的思想道德素质.     

基于VB 6平台的DAO、RDO和ADO数据库访问技术分析与比较

通过实例探讨了基于VB6平台的DAO、RDO和ADO三种数据库访问技术．最后对这三种技术在继承关系、分层模型和功能上进行了比较分析。     

脑外科机器人控制系统的设计和实现

从无框架立体定向脑外科手术的临床需求出发，设计了微创神经外科机器人黎元BH 600的控制系统．分析确定了系统的控制结构及实施方案，对脑外科机器人的硬件和软件进行了设计，建立了脑外科机器人手术规划和控制平台．通过实验和临床应用结果，验证了该手术控制系统的高精度和稳定可靠性．     

基于Pocket PC的分布式程序设计

本文介绍了实现Pocket PC与PC之间的分布式程序设计的原理．并用实例详细介绍了进行分布式程序设计的主要方法。     

智能化路考仪的设计

本文介绍了一种智能化路考仪的设计，文中简要介绍了硬件电路的组成和原理、软件实现和主要功能以及实验情况。实验表明：该路考仪功能齐全、性能稳定，可以市场推广。     

自适应数字带阻滤波器的设计及应用

本文采用自适应跟踪数字带阻滤波器自动跟踪被测信号中干扰信号的频率，并利用该频率设计相应的数字带阻滤波器去除被测信号中的干扰信号。试验表明，该方法具有设计简单、应用方便、实时性强等特点。     

Mining sequential patterns by pattern-growth: the PrefixSpan approach

Sequential pattern mining is an important data mining problem with broad applications. However, it is also a difficult problem since the mining may have to generate or examine a combinatorially explosive number of intermediate subsequences. Most of the previously developed sequential pattern mining methods, such as GSP, explore a candidate generation-and-test approach [R. Agrawal et al. (1994)] to reduce the number of candidates to be examined. However, this approach may not be efficient in mining large sequence databases having numerous patterns and/or long patterns. In this paper, we propose a projection-based, sequential pattern-growth approach for efficient mining of sequential patterns. In this approach, a sequence database is recursively projected into a set of smaller projected databases, and sequential patterns are grown in each projected database by exploring only locally frequent fragments. Based on an initial study of the pattern growth-based sequential pattern mining, FreeSpan [J. Han et al. (2000)], we propose a more efficient method, called PSP, which offers ordered growth and reduced projected databases. To further improve the performance, a pseudoprojection technique is developed in PrefixSpan. A comprehensive performance study shows that PrefixSpan, in most cases, outperforms the a priori-based algorithm GSP, FreeSpan, and SPADE [M. Zaki, (2001)] (a sequential pattern mining algorithm that adopts vertical data format), and PrefixSpan integrated with pseudoprojection is the fastest among all the tested algorithms. Furthermore, this mining methodology can be extended to mining sequential patterns with user-specified constraints. The high promise of the pattern-growth approach may lead to its further extension toward efficient mining of other kinds of frequent patterns, such as frequent substructures.     

黑河龙首水电站短期优化调度研究

为了充分发挥黑河龙首水电站的水能利用率，对龙首水电站的短期优化调度进行了研究。通过对5个典型年短期优化调度模型求解结果进行回归分析，获得各月的短期调度规则，对调度规则的验证结果表明相对误差较小，所得到的短期调度规则可以投入实际应用。     

Supervising passenger land-transport systems

In this paper, we propose a supervisory control approach, based on controlled automata concepts, for the planning for online service-operations control of a new class of passenger land-transport systems ( PLanTSs). A PLanTS belongs to a class of dynamic demand-responsive transportation systems. Rapid advances in information and communication technologies are providing a new infrastructural and communications basis upon which higher levels of automation, flexibility, and integration in the development of such transportation systems can be achieved, but to achieve these necessitates the use of more formal approaches for system planning and design. The supervisory control theory of Ramadge and Wonham offers one such methodology, which presents the design for service-operations control as a formal synthesis of a modular supervisory controller. Importantly, the design solution is guaranteed to satisfy the given behavioral specifications in some optimal fashion, without blocking the completion of certain defined "mandatory" tasks. The supervisory design methodology is presented and illustrated in detail via what, in our opinion, is a simplified but realistic PLanTS model. A structural property of the PLanTS model is used to analytically establish the nonblocking property of the modular supervisory controller designed. All automaton models for the PLanTS and the behavioral specifications considered are provided, together with the automata design of the corresponding modular supervisor.     

双机架可逆冷轧机张力控制系统的研究

文章针对双机架可逆冷轧机的特点和轧制工艺要求,采用间接张力与直接张力复合控制法以实现卷取恒张力控制;提出了机架间张力控制系统的组成,描述了两种调张法的控制原理与实现方法.