小型光电跟踪系统中基于Hough变换的形状检测     

张佳  陈杰  窦丽华 《实验技术与管理》2014,(4):89-92

REVS-50M型小型光电跟踪系统的图像处理部分采用颜色阈值的方法检测手动靶标,由于相同颜色的物体进入图像检测区域而导致误跟踪。针对此问题进行改进,应用Hough变换检测形状的方法检测圆形手动靶标,消除了误跟踪,实现了转台对靶标的正确跟踪,创造了良好的实验条件。  相似文献   

产业竞争与公司资本结构相互影响分析     

白云  刘广民  刘佳  赵丹丹  沈彬彬 《哈尔滨学院学报》2014,35(8):35-38

随着全球金融危机的爆发,发达国家众多产业出现了危机,这与其资本结构安全性以及企业市场战略密切相关,即资本结构和产业竞争存在内在的联系。基于此,文章简要阐述了资本结构与产业竞争的基本理论,对资本结构和产业竞争理论进行了分析,最终得出了产业竞争对上市公司资本结构会产生的影响,以及资本结构对产业竞争产生的影响。  相似文献   

《万卷精华楼藏书记》探赜     

赵嘉 《山东图书馆季刊》2014,(6):81-85

耿文光的《万卷精华楼藏书记》成书于清末光绪年间,传统目录学在这一时期已经发展到了相当成熟的水平。官修的《四库全书总目》《天禄琳琅书目》以及之后的私家藏书目录从编排上和著录上都为后来的目录编辑者提供了参考和启发。同时也产生了一大批记录读书心得和指导读书的札记类著作。耿文光积十多年之力,前后四次改变体例,终成《万卷精华楼藏书记》。与以往目录不同之处在于著录方式和指导读书方法两方面。  相似文献   

MSAEM Estimation for Confirmatory Multidimensional Four-Parameter Normal Ogive Models     

Jia Liu  Xiangbin Meng  Gongjun Xu  Wei Gao  Ningzhong Shi 《Journal of Educational Measurement》2024,61(1):99-124

In this paper, we develop a mixed stochastic approximation expectation-maximization (MSAEM) algorithm coupled with a Gibbs sampler to compute the marginalized maximum a posteriori estimate (MMAPE) of a confirmatory multidimensional four-parameter normal ogive (M4PNO) model. The proposed MSAEM algorithm not only has the computational advantages of the stochastic approximation expectation-maximization (SAEM) algorithm for multidimensional data, but it also alleviates the potential instability caused by label-switching, and then improved the estimation accuracy. Simulation studies are conducted to illustrate the good performance of the proposed MSAEM method, where MSAEM consistently performs better than SAEM and some other existing methods in multidimensional item response theory. Moreover, the proposed method is applied to a real data set from the 2018 Programme for International Student Assessment (PISA) to demonstrate the usefulness of the 4PNO model as well as MSAEM in practice.  相似文献   

大学生职业生涯规划咨询案例报告——通过行动来实践自己的信心     

贾瑞 《高校辅导员学刊》2013,5(1):94-100

根据职业生涯规划的信息加工理论（CIP）,引导束询者分别对自我、工作世界进行探索,学会理性决策方法和目标制定,并在此基础上,制定出一个具有SMART特征的努力方向,使自己对未来有一个清晰的把握。  相似文献   

中职烹饪专业双语教学改革初探——以南京旅游营养中等专业学校为例     

王景晨  米佳 《江苏教育研究》2013,(21):23-24

中职学校烹饪专业迫切需要在教好学生专业知识和技能的同时加强英语教学,寻求适合学生学习的双语教学模式,以更好地满足国内外市场的需求。中职烹饪专业双语课的目标是使学生在专业操作能力和烹饪英语口语水平方面获得全面发展。烹饪专业双语教学面临的困难有三:一是教师素质有待提高,二是教材严重匮乏,三是学生的英语水平参差不齐。提高中职烹饪专业双语教学水平的对策有四:一是大力加强师资队伍建设;二要创新双语教学模式,设置合理的课程体系;三应加强双语教材建设;四是注重教学方法创新。  相似文献   

外语信息化教学新探——以数据驱动学习模式为例     

郭嘉 《闽西职业技术学院学报》2013,(1):79-83

基于语料库的数据驱动学习模式是一种自下而上的归纳式学习模式,具有以学生为中心,促进学生发展自主学习能力,适用于语言教学领域的不同层面等特点。合理利用语料库资源,结合数据驱动学习模式可以弥补当前教学过程中语言输入不足等问题,是当前外语教学模式的有益补充。  相似文献   

激励企业参与高职教育办学基本机制构成探析     

龙卫兵  陈彩华  任佳 《太原大学教育学院学报》2013,31(2)

文章通过对当前我国企业参与高职教育办学主要模式特点及企业参与高职办学积极性缺失、原因分析,提出了构建激励企业参与高职教育办学基本机制.  相似文献   

Periodontal status and associated risk factors among childbearing age women in Cixi City of China     

Yan-min WU  Jia LIU  Wei-lian SUN  Li-li CHEN  Li-guo CHAI  Xiang XIAO  Zheng CAO 《Journal of Zhejiang University. Science. B》2013,14(3):231-239

Objective:To investigate the periodontal status and associated risk factors among women of childbearing age to increase the awareness of oral health.Methods:The study was conducted on childbearing age women in Cixi,a city in Zhejiang Province in the southeast of China.A total of 754 women participated in periodontal examination while receiving prenatal care.Data of the women were collected from the Cixi Family Planning Commission and during an interview.Clinical periodontal indices,such as bleeding on probing(BOP),probing depth(PD),and clinical attachment level(CAL) were measured during the examination.Statistical analysis on subject-based data was performed.Results:The prevalence of periodontal disease among childbearing age women in Cixi was high(84.7%).A significant association was found between the disease and educational level,pregnancy,taking oral contraceptives,stress,alcohol consumption,overweight,dental visit,and teeth brushing(P<0.05).Women who suffered periodontal disease showed deep PD,obvious BOP,and clinical attachment loss.Among this population,pregnancy was closely associated with higher BOP percentage;teeth brushing no more than once per day or brushing for less than 1 min(P<0.001) after adjusting for age and stress.Conclusions:The periodontal status of childbearing age women in Cixi needs to be improved urgently.Attention towards the periodontal health should be warranted,especially for those in special statuses and with poor awareness.  相似文献   

跨文化视角下的中国文化渗透     

郭佳  李正娜  光彩虹  尚喜梅  郭辉  刘满芸 《长治学院学报》2013,(1):78-80

在当今改革开放的时代,中国文化意识的培养在英语教学中应受到重视,但也不可偏颇。根据特定文化与跨文化交际能力的关系,不同文化人群之间的交往层次的提高取决于从对特定文化的认同和从属转变为对特定文化的超越。通过树立文化平等交流的意识、加大中国文化的输入、更广义的文化教学和适合的文化导入原则等,可以培养学生跨文化交际能力,尤其是用英语传播中国文化的意识和能力。  相似文献