基于B／S的高校科研信息采集系统的设计与实现

文章针对目前互联网上科技信息需要定向追踪的需求,利用基于Web的信息采集技术,设计了一个基于B／S的高校科研信息采集系统,对科技管理人员所需科研信息进行自动采集、信息过滤和数据除重,帮助科研管理部门持续有效地捕获上级传达的科研信息,减轻工作人员重复查阅固定网站的负担。     

改进的粒子滤波的视频图像目标跟踪技术

主要研究了视频图像目标跟踪准确性问题。在基于核的颜色特征统计描述及以此建立视觉目标观测概率方法的基础上,提出了一种改进的粒子滤波视频图像目标跟踪算法。首先,本文给出了基于标准粒子滤波的单特征、单目标跟踪算法,然后针对加权样本参数的选择不同,提出改进思路,最后通过与基于均值移位视觉目标跟踪算法的实验结果对比。提出的改进的粒子滤波跟踪算法在稳健性方面有显著地提高,而且若适当选择视觉跟踪参数,在实时性方面能得到有效地保证。     

风向跟踪风力发电教学实训装置的设计

主要是根据风力发电的原理、组成和运行过程,提出风向跟踪风力发电教学实训设备的设计方案,为高职院校风电类实训设备的开发提供参考.     

基于单目视觉的疲劳自动检测

提出了一种基于单目视觉的疲劳检测系统。首先检测人脸,然后对头部进行跟踪,在可靠人脸的基础上,定位并且跟踪眼睛,提取眼角与眼睑特征。通过对眼睛及头部状态的疲劳检测来决定是否触发警告。实验证明系统具有一定的可靠性与准确性。     

Optimal restructuring strategies under various dynamic factors

Corporate restructuring was identified as a new industrial force that has great impact on economic values and that therefore has become central in daily financial decision making. This article investigates the optimal restructuring strategies under different dynamic factors and their numerous impacts on firm value. The concept of quasi-leverage is introduced and valuation models are built for corporate debt and equity under imperfect market conditions. The model＇s input variables include the quasi-leverage and other firm-specific parameters, the output variables include multiple corporate security values. The restructuring cost is formulated in the form of exponential function, which allows us to observe the sensitivity of the variation in security values. The unified model and its analytical solution developed in this research allow us to examine the continuous changes of security values by dynamically changing the coupon rates, riskless interest rate, bankruptcy cost, quasi-leverage, personal tax rate, corporate taxes rate, transaction cost, firm risk, etc., so that the solutions provide useful guidance for financing and restructuring decisions.     

Teachers’ perspectives of lower secondary school students in streamed classes – A Western Australian case study

Streaming in secondary schools is not beneficial for improving student outcomes of education with vast amounts of educational research indicating that it does not improve academic results and increases inequity. Yet teachers often prefer working in streamed classes, and research shows that teachers mediate the effects of streaming on students. This study sought to add to the understanding of teachers’ role in student learning by investigating how teachers conceptualise the students in streamed classes. A qualitative case study approach was used, where 18 teachers were interviewed in-depth to create narrative examples, three of which are presented here. These narratives summarise the research findings that teachers saw students in high and low streams as having homogenous characteristics according to five dichotomous categories: approach to learning, attitude to learning, learning style, autonomy and background. Students in mixed-ability classes were viewed along these same continua, but as more heterogeneous groups. Furthermore, these views of students had direct implications for how teachers planned for learning and the expectations that they held of their students. The discussion links streaming research with teacher expectation research, suggesting that teachers of streamed classes in this secondary school hold specific whole-class ideas that affect student learning. The article concludes with recommendations for further inquiry that links these two important fields of educational research.     

基于卖家分散化决策的双边平台价格模式研究

在卖家分散化决策和平台面临弹性需求的基础上,分析了固定收费、交易费、两部收费和利润分成制四种价格模式在双边市场中的应用策略,基于平台所获利润对以上四种收费模式进行了比较.研究发现:尽管交易费或两部收费更有利于平台从卖家身上获取更高比例的剩余,但由于扭曲了卖家的努力水平,因此并不一定能够使平台获得更高的利润;利润分成制和固定费都能够激励卖家达到最优的努力水平,而利润分成制获取卖家剩余的能力更强,因此一定在利润上优于固定费;利润分成制在卖家激励方面优于交易费和两部收费,在剩余索取方面是否优于交易费或两部收费取决于卖家的成本,给定卖家类型和外部性强度,当成本在卖家间的增幅较小时,利润分成制带来的利润最优.     

Chaos analysis of discharge current based on tracking test of phenolic resin

In tracking test,discharge is a complicated process and comparative tracking index(CTI)has wide variation.To evaluate tracking resistance,the chaos analysis of discharge current is presented based on the tracking test ofphenolic resin in accordance with IEC601 12.According to the characteristics of statistical self-similarity and complexity of discharge current,the largest Lyapunov exponent is calculated,and the 2-dimensional attractor ofdischarge current is reconstructed.Moreover,the attractors of discharge current and recurrence plots of different discharge states are reconstructed.The results indicate that the chaos attractors have different characteristics in evolutionary tracks,the topological structure and grain direction of recurrence plots show significant differences.The chaos attractor can describe the tracking process,the recurrence plot can identify the tracking state clearly,while its arithmetic is simple.     

IP智能探测与追踪系统设计

为确保对网络入侵行为的跟踪与控制,采用IP探测技术,在Microsoft Visual C＋＋8．0与Microsoft Office Access 2007在CZ88．NET IP地址库基础上实现了基于HIDS思想的IP智能追踪系统．系统能够准确定位人侵IP物理位置,获得了良好的实验效果,为系统安全审计与入侵追踪提供了较好保证．     

以五环高速公路构建武汉城市圈水陆空交通一体化

以＂船舶方向盘＂平面图形构建武汉城市圈五环高速公路路径迫在眉捷,因为武汉城市圈在武汉市区现在已有两个环圈形高速公路已投入运营,所以借此设计武汉城市圈第三环、第四环和第五环高速公路形成五个包围圈,根据会计文化＂强本节用＂的原则,依据＂船舶方向盘＂构造原理,将黄冈市、鄂州市、咸宁市和孝感市四个卫星城市设计在第三环高速公路环圈上,将黄石市和仙桃市两个卫星城市设计在第四环高速公路环圈上,将潜江市和天门市两个卫星城市设计在第五环高速公路环圈上,形成以武汉市为半径的经济圈与经济带。