多元智能理论在任职教育中的应用初探

多元智能理论强调人类智能在性质与结构上的多元性。针对新形势下军队任职教育的特点与需求,以提高岗位任职能力和创新实践能力为目标,考虑学员在个体需求和智能结构上的差异,探讨了任职教育在教学方法、教学环境和资源保障需求与应对策略,分析了相应的教学评估手段。     

基于SQL的多条件选择智能实现算法

B/S架构的信息系统开发中,一般情况下,根据用户的选择,n个条件的输入组合数是2n个。但是,该文中提出的算法,其组合数仅为n到n(n+1)/2,大大简化了编程。     

Performance evaluation of directory protocols on an optical broadcast-based distributed shared memory multiprocessor

Recent advances in the development of optical technologies suggest the possible emergence of broadcast-based optical interconnects within cache-coherent distributed shared memory (DSM) multiprocessor architectures. It is well known that the cache-coherence protocol is a critical issue in designing such architectures because it directly affects memory latencies. In this paper, we evaluate via simulation the performance of three directory-based cache-coherence protocols; strict request-response, intervention forwarding and reply forwarding on the Simultaneous Optical Multiprocessor Exchange Bus (SOME-Bus), which is a low-latency and high-bandwidth broadcast-based fiber-optic interconnection network supporting DSM. The simulated system contains 64 nodes, each of which has a processor, a cache controller, a directory controller and an output channel. Simulations have been conducted for each protocol to measure average processor utilization, average network latency and average number of packets transferred over the network for varying values of the important DSM parameters such as the ratio of the mean channel service time to mean thread run time (T/R), probability of a cache block being in modified state {P(M)}, the fraction of write misses {P(W)} and home node contention rate. The results reveal that for all cases, except for low values of P(M), intervention forwarding gives the worst performance (lowest processor utilization and highest latency). The performance of strict request-response and reply forwarding is comparable for several values of the DSM parameters and contention rate. For a contention rate of 0%, the increase of P(M) makes reply forwarding perform better than strict request-response. The performance of all protocols decreases with the increase of P(W) and contention rate. However, the performance of strict request-response is the least affected among other protocols due to the negative impact of the increase of P(W) and contention rate. Therefore, for the full contention case (i.e. contention rate of 100%); for low values of P(M), or for mid values of P(M) and high values of P(W), strict request-response performs better than reply forwarding. These results are significant in the sense that they provide an insight to multiprocessor architecture designers for comparing the performance of different directory-based cache-coherence protocols on a broadcast-based interconnection network for different values of the DSM parameters and varying rates of contention.     

Signal strength based routing for power saving in mobile ad hoc networks

The transmission bandwidth between two nodes in mobile ad hoc networks is important in terms of power consumption. However, the bandwidth between two nodes is always treated the same, regardless of what the distance is between the two nodes. If a node equips a GPS device to determine the distance between two nodes, the hardware cost and the power consumption increase. In this paper, we propose using a bandwidth-based power-aware routing protocol with signal detection instead of using GPS devices to determine the distance. In our proposed routing protocol, we use the received signal variation to predict the transmission bandwidth and the lifetime of a link. Accordingly, the possible amount of data that can be transmitted and the remaining power of nodes in the path after data transmission can be predicted. By predicting the possible amount of data that can be transmitted and the remaining power of nodes after data transmission, we can design a bandwidth-based power-aware routing protocol that has power efficiency and that prolongs network lifetime. In our simulation, we compare our proposed routing protocol with two signal-based routing protocols, SSA and ABR, and a power-aware routing protocol, MMBCR, in terms of the throughput, the average transmission bandwidth, the number of rerouting paths, the path lifetime, the power consumed when a byte is transmitted, and the network lifetime (the ratio of active nodes).     

基于PageRank的计算机性能评价方法

现有选择性计算机性能评价方法主要使用基准程序评价方法,基准程序中各子程序的输出往往因为单位不同而无法进行进一步数据处理,同时基准程序评价方法广泛采用的权重和评分方法缺乏理论依据。针对该问题,提出基于佩奇排名(PageRank)的计算机性能评价方法,采用比较数据序列间相似性的方法产生邻接矩阵从而为各项评估功能计算PageRank得分。实验结果表明,该方法能客观反映目标计算机系统的性能。     

基于Webdecoy的攻击行为特征提取研究

为更好地解决Web应用的安全问题,提出了基于Webdecoy的攻击行为特征提取模型.以具体的业务系统为基础,通过嵌入监控代码跟踪对业务系统的访问并获取探测攻击信息,并对获取信息进行归一化处理和属性划分,根据属性的动态比较得到攻击请求的相似性结构.最后对探测行为进行检测评估,对恶意行为给出报警,并通过实验结果验证了该模型的有效性.     

粮情测控技术及其发展

介绍了粮情测控系统及技术现状,简要论述了传感器技术、计算机技术、通信技术及控制技术的发展及在粮情测控系统中的应用情况,同时对粮情测控系统及技术的发展趋势进行了分析。相信随着科学技术的不断进步,此项技术不断发展,粮情测控技术必将向数字化、多功能继承化、自动调控、数据通信无线化和远程传输方向发展;而粮情测控产品的生产、安装和验收也必将趋于模块化、标准化和规范化。     

基于Web的教学质量评价系统的设计与实现

为解决高校教师教学质量评价的网络化问题,在综合考虑数字化校园建设要求基础上,提出了基于Web的高校教师教学质量评价系统的功能要求和体系结构,设计了后台数据库系统和功能模块,保证了系统的实用性、兼容性和可扩展性.研究了面向数字化校园综合管理平台的公共数据采集技术和系统安全设计,有效地解决了教师教学质量评价系统与其它业务系统之间的融合问题和系统安全问题.测试结果表明了系统的有效性.     

SAS谱系聚类在区域物流发展评价中的应用

为了正确评估我国省级区域物流的发展水平,在分析了影响区域物流发展因素的基础上,明确了评估区域物流发展水平的指标选取原则,构建了评价我国区域物流发展水平的指标体系,利用SAS统计软件的谱系聚类功能,应用谱系聚类法对中国大陆省级区域物流发展水平的相似程度进行了聚类分析.分析和研究结果表明,目前我国各区域物流业的发展水平基本上反映了该区域内的经济社会发展水平,聚类结果科学合理,可以指导我国区域物流发展战略的政策制定.最后针对区域物流发展战略提出了建议.     

基于Zigbee的无线粮情监控网络中测量节点的设计

针对传统有线粮情监控系统存在的缺陷,提出"平面分离、上下贯通"的无线粮情监控网络的设计思路,实现了设计目标的基本单元测量杆的功能结构,规划了基于Zigbee的无线粮仓温湿度监控网络.根据节能需求将无线监控网络中的节点分为测量节点和路由节点,完成了测量节点的接口电路和主程序设计,并对测量节点中的关键技术进行了阐述.