数据挖掘在入侵检测系统中的应用

为了使入侵检测系统智能化,把数据挖掘应用在入侵检测中进行了研究。首先对以往入侵检测系统的研究进行了概述,并且介绍了数据挖掘运用于入侵检测系统的优势,提出了一种基于数据挖掘的网络数据库入侵检测系统,并对这种入侵检测系统的组成及系统的设计进行了描述。并在该系统中运用改进的Apriori算法找出频繁项目集和产生关联规则。并且将该系统进行了实验测试,另外在最后对实验结果进行了分析和总结。总之,该系统是对一种入侵检测系统的探索和研究,在以后的工作中,还要对它进行不断的改进和发展。     

基于JSP的藏文古籍著录系统设计研究及实现

本文对藏文古籍著录的内容进行了具体的研究和分析,并对著录系统界面进行了设计和基本功能的实现。本系统包括了四个子系统,分别是书籍著录系统、铭刻著录系统、文书著录系统和讲唱著录系统。最后,本文详细介绍了书籍著录系统的设计和实现。     

基于嵌入式系统的DNC系统开发

本文对DNC系统在制造业发展中的地位和作用进行了分析,论述了DNC系统的体系结构和软硬件架构,对利用嵌入式系统构建DNC的过程进行了探讨,对DNC系统的功能和实现技术进行了介绍。     

数据库连接池在考试系统中的应用

解决了网络考试系统中对数据库进行频繁连接和关闭的特性,提高了数据库的效率和安全性,使用了数据库连接池的技术手段,设计并实现了考试系统中的数据库连接池应用,对系统进行测试和分析,通过对使用连接池和不适用连接池的考试系统做了对比,结果表明,使用数据库连接池技术的考试系统大大提高了系统的运行效率,并且还可以有效降低系统出错的概率,降低系统开销。     

基于UML的飞行监控系统分析与设计

介绍了UML的概念和要点,应用UML对飞行监控系统进行了建模.给出了系统的体系结构并建立了飞行监控系统的用例模型、静态模型和动态模型,提高了系统的可靠性、可重用性和可维护性,为应用UML对大型飞行监控系统的建模进行了有益的尝试.     

基于CDMA 1X的SCADA系统的研究

本文分析了现有SCADA系统通信技术的不足,提出将CDMA 1X无线数据传输技术应用于SCADA系统的设想.文章对CDMA 1X技术进行了简单的介绍,对基于CDMA 1X的SCADA系统进行了系统研究,完成了VPDN模式的系统组网,对SCADA系统的终端和监控主机通信部分进行了详细设计.实际运行结果表明,该系统具有良好的可靠性、灵活性和可扩性.     

铁路站场通信系统的研究与设计

对某铁路站场通信系统进行了系统性设计,该系统包括IP软交换系统、VSAT卫星通信系统、视频监控、周界报警系统、安防监控系统、通信电源系统和综合布线系统5个部分,并对6个系统的功能和技术指标进行了分析,为工程设计提供参考.     

基于Zigbee与CAN总线技术的井下人员位置监测系统的设计

该系统基于Zigbee和CAN总线技术开发了井下人员位置监测系统,介绍了系统的组成和工作原理,给出了总体结构图,对硬件的功能模块进行了详细阐述,实际证明该系统具有良好的可靠性和抗干扰性性,能更好的对井下人员进行监测。     

基于Can总线和实时数据库技术的井下监测监控系统的设计

系统基于CAN总线和实时数据库技术开发了井下监测监控系统,介绍了系统的组成和工作原理,给出了总体结构图,对硬件和软件的功能模块进行了详细阐述,实践证明该系统具有良好地可靠性和抗干扰性性,能更好地对井下环境进行监测.     

基于ASP．NET的远程司法鉴定业务综合管理系统的设计与实现

本论文对远程司法鉴定业务综合管理系统（以下简称司法鉴定系统）的ASP．NET实现进行了探讨,论文首先阐述了司法鉴定系统的业务应用背景,并对司法鉴定系统的系统结构进行了介绍;接着从司法鉴定业务的内涵描述了开发司法鉴定系统的目标和要求;然后对司法鉴定系统规划,在此规划上进一步提出设计思想和分析整个系统的目标和功能要求,并详细介绍了B／S模式下系统的设计思想、分析设计与实现方法;最后就使用的关键技术进行了相关介绍。     

遗传规划算法在化合物设计、筛选研究中的应用

采用计算机科学中新兴的遗传规划算法思想，结合化学物质的本质特点，运用进化操作来实现化合物的合成设计和筛选。文中针对算法运用讨论了函数集、终止集问题，通过计算元素组成的字符串的化合价的结果来确定适应度函数，既符合化学学科的本质规律，又满足了算法的要求。通过复制、交换和突变操作，经过多代次的进化终止，取得了满意的结果。文章还针对其实用性，从化学本质出发，提出了建议和研究方向。可以说本文是遗传规划在化学化合物合成筛选中运用的成功探索，同时也为进一步研究打下了坚实的基础。     

基于SWRL本体推理研究

随着语义Web的兴起,本体技术已成为计算机学科中的一个研究热点。在分析本体、Web本体语言OWL和语义网规则描述语言SWRL的概念和特点的基础上,利用MPEG-7标准中的视觉描述子来描述图像的特征,采用本体建立图像的语义特征,将SWRL引入图像情感识别领域,利用SWRL构建推理规则。通过建立图像的本体信息和推理规则,并用规则推理出本体中隐含的信息,实现图像情感识别,使计算机具有一定的情感推理能力。     

探析计算机硬件故障分析与维护

随着科学技术不断发展与进步,计算机硬件所需要的技术要求越来越高,因此,我们应该对其出现的故障进行及时分析,并且还要在分析的基础上提高维护水平。从现有的计算机来看,类型比较多样,有笔记本、商务本、超极本、电脑主机一体机等等,不同的计算机需要采用不同的维护方式,否则很容易导致故障频发。另一方面,我们要对计算机硬件故障进行详细的分析,找出故障的根源,一举解决问题,否则很有可能会让计算机遭到更大的损坏。计算机硬件故障分析与维护是一整套连贯性的检修工作,需要互相配合才能取得更好的结果。     

From remote maintenance to MAS-based e-maintenance of an industrial process

One of the main consequences of the extended enterprise is the emergence of new forms of relationships between the customer and the supplier in order to ensure the quality of service of the object throughout the life cycle. Innovative communication and co-operation methods are needed to support these new relationships. The combination of modern information processing and communication tools, commonly referred to as tele-service, offers the technical support required to access remote information. Indeed, it is easier to transfer information and knowledge to different actors than to move an actor to the site. However, even if this technical support is necessary for information communication, it is insufficient to develop a co-operation-based working situation that involves many self-motivated customers and suppliers sharing a common goal. This synergy is an emergent property of the system as a whole, and it is not expected to be obtained as a simple sum of its components. For example, a challenging problem in the field of product manufacturing is to assist the operator in its decision-making, when the system functioning is degraded, to preserve the system under service at maximum (anticipation of the failure) while remaining it in a space of allowed operation (to avoid consequences of an error in judgement). That means an evolution from tele-service to e-work and e-maintenance in particular where the assistance to operator results from collaboration of maintenance processes and experts. Consequently, this paper examines some issues and challenges involved in the evolution from the tele-maintenance of an industrial platform to the e-maintenance, and then proposes a multi-agent system-based collaboration as a solution to implement the e-maintenance experiments.     

Affinity-Based Network Interfaces for Efficient Communication on Multicore Architectures

Improving the network interface performance is needed by the demand of applications with high communication requirements (for example, some multimedia, real-time, and high-performance computing applications), and the availability of network links providing multiple gigabits per second bandwidths that could require many processor cycles for communication tasks. Multicore architectures, the current trend in the microprocessor development to cope with the difficulties to further increase clock frequencies and microarchitecture efficiencies, provide new opportunities to exploit the parallelism available in the nodes for designing efficient communication architectures. Nevertheless, although present OS network stacks include multiple threads that make it possible to execute network tasks concurrently in the kernel, the implementations of packet-based or connection-based parallelism are not trivial as they have to take into account issues related with the cost of synchronization in the access to shared resources and the efficient use of caches. Therefore, a common trend in many recent researches on this topic is to assign network interrupts and the corresponding protocol and network application processing to the same core, as with this affinity scheduling it would be possible to reduce the contention for shared resources and the cache misses. In this paper we propose and analyze several configurations to distribute the network interface among the different cores available in the server. These alternatives have been devised according to the affinity of the corresponding communication tasks with the location (proximity to the memories where the different data structures are stored) and characteristics of the processing core. As this approach uses several cores to accelerate the communication path of a given connection, it can be seen as complementary to those that consider several cores to simultaneously process packets belonging to either the same or different connections. Message passing interface (MPI) workloads and dynamic web servers have been considered as applications to evaluate and compare the communication performance of these alternatives. In our experiments, performed by full-system simulation, improvements of up to 35% in the throughput and up to 23% in the latency have been observed in MPI workloads, and up to 100% in the throughput, up to 500% in the response time, and up to 82% in the requests attended per second have been measured in dynamic web servers.     

基于大数据平台的点负荷近中期负荷预测及行业负荷增长特征分析

为保障电力部门对于台区内设备的维护,需要预测台区的负荷。因此供电部门就必须具备预测未来一年以至更长时间的台区负荷的能力,防止因负荷过载对变压器造成损坏,并保证城市的可靠供电。对台区负荷的预测难点在于对于城中村的预测,城中村流动人口多,产业类型复杂多样,受就业环境、经济发展的影响深,表现为负荷的变化相较于其他的台区随机性更强。鉴于此原因,我们以大数据平台为依托,进行单因素变量的预测,采用季节分解模型对历史用电负荷进行季节分解;然后分别用线性回归和自回归积分滑动平均模型（ARIMA）对季节分解出来的趋势和季节、残差成分进行预测,获得精度良好的负荷预测模型,最后选择两个特征鲜明的行业进行比较,分析其负荷增长特征。     

海量大气颗粒物成分分析系统

2011年以来, 我国多地出现了雾霾天气, 对大气颗粒成分分析有助于人们了解雾霾形成的原因, 制订有效的应对措施. 本文的主要目的是对于大气颗粒物成分进行命名. 传统颗粒物的命名是在经验的基础上, 对颗粒进行逐个的命名. 若将该过程自动化, 难点有两个: 数据规模太大、人工经验难以量化. 本文使用数据挖掘的工具, 首先进行了一次聚类分析, 降低了数据规模. 为了解决人工经验难以量化的问题, 使用逻辑回归分类算法, 并进行了调优, 使正确率达到了业务处理的要求.     

广告设计之互动创意

在激烈的市场竞争中,无论是国际还是国内的企业,都把提高广告设计水平作为提升竞争力的一种手段,广告设计创新显得越来越迫切。本文试图从互动角度来探讨广告设计创意,目的有两个:一个是拓宽广告设计理论的研究空间,预测互动创意作为一种广告设计创新途径的未来发展和可能;第二个目的是为广告设计实践总结和归纳新的思考和创作方法,以拓宽设计实践者的创意思维空间,丰富表现语言。本文通过研究国内外最新的广告设计成功案例,探讨了广告设计之互动创意的途径和方法,期望能对相关设计领域的研究和实践提供参考价值。     

Promotion and prevention orientations in the choice to attend lectures or watch them online

When presented with the option to use a new instructional technology, students often face an approach–avoidance conflict. This study explored promotion and prevention orientations, concepts linked to approach and avoidance in Higgins's regulatory focus theory, in the choice to attend lectures or watch them online. Openness, a core disposition in the Big Five Model of personality, and positive attitudes towards the utility of the Internet, reflect promotion orientations that are potentially related to the choice to watch lectures online. By contrast, neuroticism, another core disposition in the Big Five Model, and anxiety about the Internet as a computer technology, reflect a prevention orientation that is potentially related to the choice of attending lectures in class. The results illustrate that both promotion and prevention are at work in the choice to attend lectures or to watch them online. Neuroticism and anxiety about the Internet as a computer technology were related to the choice to attend lectures in class, whereas the perceived utility of the Internet was related to the choice to watch lectures online. Instructional mode choice was not related to examination performance, suggesting that the choice to attend lectures or watch them online has more to do with individual differences in promotion and prevention orientations than with pedagogical characteristics that impact learning.     

The role of experience in night work: Lessons from two ergonomic studies

The purpose of this article is to analyze some connections between experience, health and work, especially in the field of night work. As a result of the baby boom, the proportion of elderly workers is steadily increasing, while at the same time many workers are reaching retirement age and being replaced by younger people. And, in the same time, there is an overall gradual increase in shift work and night work. To our knowledge, worker experience has not been extensively studied in this context. This was our focus in studying work activity in two very different situations, in a hospital and in a steel industry.In these two studies we observed that the experienced workers endeavor to plan ahead, especially at night. They do this to limit fatigue and to avoid emergencies and ensure that work is stress-free and as far as possible under control. But experience not only brings workers to plan ahead, it also enables them to do so, thanks to the resources it confers: gaining familiarity with tasks and acquiring the ability to identify critical situations, gaining knowledge about themselves and awareness of situations that cause difficulty; and gaining a better overview of the collective aspects of their work and of ways to share tasks or obtain assistance.They are able to undertake these strategies thanks to specific skills and capacities they have built along their professional career, which notably leads them to find the best trade-off between several goals, possibly contradictory.Such experience is especially valuable at night, when the worker is tired, and when there are fewer supervisors present. This experience can only be gained, however, if the work environment fosters its acquisition and provides an opportunity to make use of it, especially during the night shift and especially with respect to planning tasks ahead of time.