嵌入式平台中Shift目标跟踪算法的收敛局限性优化

嵌入式平台目标跟踪在应用的过程中Mean-Shift算法具有一定的收敛局限性,因此提出了一种基于改进Mean-Shift的嵌入式系统目标跟踪算法,首先对标准Mean-Shift算法的采样模式进行了改进,然后标记已采样的点来加快运算速度,最后对原算法的收敛局限性进行了优化。通过对算法进行仿真,得到结果是:改进的Mean-Shift的嵌入式系统目标跟踪算法相比于之前的算法具有更好的应用性能,其精确性也相对较高。     

关爱教育在高校毕业生就业质量报告编制中的作用研究

高校毕业生职业发展状况和人才培养质量调查是高校办学绩效评价的重要依据,也是各高校编制毕业生就业质量报告的基础数据,但由于其对象的特殊性,在宣传、发起、组织、反馈等环节都有许多不可控的因素,毕业生的参与度、结果的真实性和有效性都会影响报告编制质量。关爱教育可以增强高校毕业生对班主任和母校的认同度,积极真实客观地参与跟踪调查,使调查结果更具可信度和说服力,进而提高了高校毕业生就业质量报告编制的质量。     

Geoway在地形图生产中的应用

论述了Geoway数据加工平台的应用,简单介绍了Geoway数据加工平台矢量化地形图的基本流程。     

学校分层、英才制度与教育公平

本文讨论了学校分层和学生分流制度对于学生学业成就、个性和社会发展的影响与英才制度和社会不平等之间的关系。本文试图说明,学校的主要目的不仅仅是决定结果和挑选学生而应该是扩充机会;学校不仅仅是为未来社会提供劳动力,也应该承担公民教育的责任和义务。一个可持续发展的经济体和民主制度只有当它的所有公民都能有意识地参与其政治、经济、社会和文化生活的时候才能成为现实。     

基于卡尔曼滤波器的机动目标跟踪仿真

将卡尔曼(Kalman)滤波器的变维滤波算法应用于雷达数据处理中,对机动目标进行跟踪,得出机动目标的滤波数据曲线,并对目标进行了拦截仿真。仿真结果表明该方法能估计出目标的运动特征并对运动目标拦截成功。     

一类线性切换系统的鲁棒跟踪控制

文章研究了线性切换系统的鲁棒跟踪控制,并提出可解性的充分条件。设计切换控制规则使得切换线性系统满足加权H∞参考模型,并采用平均驻留时间法和Lyapunov函数来处理稳定性分析和控制器设计。通过使用线性矩阵不等式,控制器设计问题可以得到很好的解决。     

微信小程序在专利信息检索与跟踪中的应用

微信小程序是移动互联网时代专利信息检索与跟踪的新工具.通过专利信息检索相关微信小程序的检索统计与对比分析,比较了不同小程序的特点.以核燃料技术领域为例,具体介绍了小程序在专利信息检索、专利信息跟踪等方面的应用.案例表明,利用好微信小程序,有助于提高专利信息的检索与利用水平.     

Success and failure in secondary education: socio‐economic background effects on secondary school outcome in the Netherlands, 1927–1998

In the Netherlands, educational attainment is the result of a sequence of separate educational transitions. Because of the tracked nature of the Dutch educational system, students do not make binary stay‐or‐leave‐decisions at each transition. After having entered one track of secondary education, students can change tracks during the entire secondary course. The initial track and the secondary school outcome therefore are incongruent for a significant proportion of the Dutch students. As social background partly predicts initial track placement, track changes and successful termination of the course, we suggest distinguishing conditional and unconditional effects of family background in the transition to secondary school outcome. This paper complements findings of previous research by taking into account the tracked structure of the Dutch educational system and the entire sequence of transitions in secondary education. For the empirical analysis, repeated cross‐sections from the Family Survey Dutch Population (1992, 1998, 2000 and 2003) are used. Multinomial logistic regressions reveal that inequality in the outcome of secondary education is partly explained by the fact that initial track placement is socially selective and because this initial inequality is even enhanced by track changes during secondary education. The remaining ‘conditional’ effect of parental education, however, indicates that parental education works on top of this selection to prevent drop out. Inequality in secondary school outcome thus is a cumulative result of social background effects in a sequence of educational transitions throughout secondary education. Decreasing inequality over time is entirely explained by decreasing inequality in the transition from primary to secondary education.     

Finding and tracking subjects within an ongoing debate

This paper describes a new algorithm for finding and tracking different subjects within an ongoing debate. The algorithm finds blocks of co-occurring terms, representing subjects, including blocks for which the term co-occurrence pattern forms a ring topology. We used short online debate forum data and longer summary bulletins to assess the extent to which the algorithm could correctly detect subjects, according to the judgements of human evaluators. The results show that it could normally detect subject-shifting and track different subjects over time in online debate forums and with adjustments could find subjects in bulletins, but could not track the subjects in the bulletins because the interlinking between subjects was too dense in the longer documents.     

基于共词分析的技术跟踪可视化研究——以公路工程领域为例

通过技术跟踪,可以了解某一技术领域的现状和发展态势,为技术战略的制定提供决策信息支持,但目前对技术跟踪的研究还不够深入.基于此,文章从共词分析的角度,以计算机技术为手段,从数据采集、数据分析和数据可视化三个方面,提出技术跟踪的可视化方法,详细地阐述了此种方法的结构和具体实现步骤.在此基础上,以公路工程领域为例,从个人、机构和国家三个层面进行可视化实验,并着重对中国在此领域的技术情况进行了详细的分析,以此判别技术领域的深层次结构,为技术发展战略的制定做一些基于工程技术分析手段的支撑性工作.