冰箱压缩和长春高新国家股回购实证分析

运用事件研究方法中的“常均值调整收益模型(MAR)”,我们对国内冰箱压缩和长春高新的国家股回购进行了实证分析,得出的结论是：在各个事件公告前后的短暂交易日内,两家公司股价的累积超常收益显地为正。这说明国家股回购确实为A股股东创造了财富,有关股份回购的个别信息披露不规范,“内幕交易”提前获得了信息并加以利用。     

教育装备的资源优化问题研究

采用运筹学的优化理论和定量分析方法,结合具体的案例,研究教育装备资源的合理有效运用,从而定量地提供了可操作的决策理论和方法。     

论以能力为本改革分析化学教学

论述了在以能力为本位的教学思想指导下进行的分析化学教学改革 .实验课教学应加大基本操作技能考核力度 ,开展第二课堂活动等培养学生的化学分析技能 ,以培养学生的基本职业能力 ;通过学生设计实验 ,仿真式上岗实操等综合演练 ,突出培养学生的综合职业能力     

两栖作战指挥人才培养刍议

根据对两栖作战指挥军官培养现状分析 ,提出为适应未来军事斗争需要 ,两栖作战指挥军官应具备的知识结构、指挥技能和谋略水平 ,以及为提高其作战指挥能力采取的有效途径     

基于 SM2 签名算法的高速密码卡实现

目前 SM2 签名算法应用越来越广泛,随着网络通信与电子交易业务的快速增长,其运算效率面临着前所未有的挑战。为了提高密码卡运算效率,设计并实现了一种基于 SM2 签名算法的高速密码卡。该密码卡利用协议组合运算的思想,减少了 DSP 与 FPGA 交互次数,提高了签名处理效率。同时,采用预计算技术将（1+ d）-1的值存储在密码卡中,降低了签名的计算复杂度。与传统基于 SM2 签名算法的密码卡相比,该密码卡签名速度提高了 22%,可适用于大量数据通信的场景。     

泛系论与科学理性--形而泛学和元相对论(续)

泛系理论是一种宏微兼顾的多层网络型的跨学科新研究,本文介绍了系统分析或者超繁系统的观控的一些具体理法粲泛系和多层次粲泛系,运故创新法,大碗捞针法,另外讨论了与超繁系统的观控有关的产品·系统·理论·技术·人才·素质开发,以及科技教育创新、教育学和数专多能贵精奇的博才运筹的泛系理法.     

剖析Linux中的虚拟文件系统VFS的认识

Linux虚拟文件系统VFS将各种不同逻辑文件系统的操作和管理纳入到一个统一的框架中 ,为用户程序提供一个统一的、抽象的、虚拟的文件系统界面。文章论述了Linux文件系统的逻辑关系和逻辑结构 ,并对VFS中几个主要的数据结构进行了分析。     

A general matrix framework for modelling Information Retrieval

In this paper, we present a well-defined general matrix framework for modelling Information Retrieval (IR). In this framework, collections, documents and queries correspond to matrix spaces. Retrieval aspects, such as content, structure and semantics, are expressed by matrices defined in these spaces and by matrix operations applied on them. The dualities of these spaces are identified through the application of frequency-based operations on the proposed matrices and through the investigation of the meaning of their eigenvectors. This allows term weighting concepts used for content-based retrieval, such as term frequency and inverse document frequency, to translate directly to concepts for structure-based retrieval. In addition, concepts such as pagerank, authorities and hubs, determined by exploiting the structural relationships between linked documents, can be defined with respect to the semantic relationships between terms. Moreover, this mathematical framework can be used to express classical and alternative evaluation measures, involving, for instance, the structure of documents, and to further explain and relate IR models and theory. The high level of reusability and abstraction of the framework leads to a logical layer for IR that makes system design and construction significantly more efficient, and thus, better and increasingly personalised systems can be built at lower costs.     

炼油过程短期生产计划油罐动态分配研究

本文研究了一次加工短期生产计划中的油罐分配问题,研究结果表明厂区油罐的分配决定了原油输送、油船卸油等过程,是炼油一次加工短期生产计划的关键。此外给出了一个基于调度可行性的油罐分配算法,最后以一个工业实例来验证这个算法。     

Teaching customer-centric operations management – evidence from an experiential learning-oriented mass customisation class

The increase of individualised customer demands and tough competition in the manufacturing sector gave rise to more customer-centric operations management such as products and services (mass) customisation. Mass customisation (MC), which inherits the ‘economy of scale’ from mass production (MP), aims to meet specific customer demands with near MP efficiency. Such an overarching concept has multiple impacts on operations management. This requires highly qualified and multi-skilled engineers who are well prepared for managing MC. Therefore, this concept should be properly addressed by engineering education curricula which needs to keep up with the emerging business trends. This paper introduces a novel course about MC and variety in operations management which recalls several Experiential Learning (EL) practices consistently with the principle of an active learning. The paper aims to analyse to which extent EL can improve the efficiency of the teaching methods and the retention rate in the context of operations management. The proposed course is given to engineering students whose’ perceptions are collected using semi-structured questionnaires and analysed quantitatively and qualitatively. The paper highlights the relevance (i) of teaching MC, and (ii) of active learning in engineering education, through the specific application in the domain of MC.