Semantic annotation based exploratory search for information analysts     

Jae-wook Ahn  Peter Brusilovsky  Jonathan Grady  Daqing He  Radu Florian 《Information processing & management》2010,46(4):383-402

The system presented in this article aims to improve information access through the use of semantic annotation utilizing a non-traditional approach. Instead of applying semantic annotations to enhance the internal information access mechanisms, we use them to empower the user of an information access system through an innovative named entity-based user interface – NameSieve. NameSieve was built to support an intelligence analyst during the process of exploratory search, an advanced type of search requiring multiple iterations of retrieval interleaved with browsing and analyzing the retrieved information. The proposed approach was implemented in the NameSieve system so that the system can transparently present a summary of search results in the form of entity “clouds.” Therefore, these clouds allow the analyst to further explore the results in a novel manner, acting together as a faceted browsing interface. We ran a user study (with ten subjects) to examine the effect of NameSieve, and the study results reported in the paper demonstrate that this new way of applying semantic annotation information was actively used and was evaluated positively by the subjects. It enabled the subjects to work more productively and bring back most relevant documents.  相似文献   

高校学生教学满意度的因子分析     

萨茹拉  袁小飞  杨子仪 《民族教育研究》2010,(6)

本调查以中央民族大学部分本科学生为研究对象,以《人力资源开发与管理》、《职业生涯规划》两门公选课为采样项目,测量学生对教师授课满意度的17个项目并对其进行了因子分析,得到知识传递、授课支持和课堂氛围共三个公因子。回归分析表明,学生对教师的整体评价受到三个公因子的共同影响,学生的学习效果受到授课支持和课堂氛围的共同影响,而学生学习的积极性不受三个公因子的影响。

Abstract：

An investigation was conducted by taking some students in Minzu University of China as subjects and two selective courses of ＂Human Recourse Development ＂ and ＂Management and Career Planning＂as sample projects.Afterwards,a factor analysis of students’satisfaction with teaching was made in 17 items,which revealed three common factors： knowledge transmission,instruction support and classroom atmosphere.A regression analysis showed that students’overall evaluation of a teacher is influenced by all the three factors,and that their learning effect is influenced by both instruction support and classroom atmosphere,whereas their enthusiasm is influenced by neither of the three.  相似文献   

Improving information security management: An analysis of ID–password usage and a new login vulnerability measure     

Youngsok Bang  Dong-Joo Lee  Yoon-Soo Bae  Jae-Hyeon Ahn 《International Journal of Information Management》2012

Statistics show that the number of identity theft victims in the US increased by 12% in 2009, to 11.1 million adults, while the total annual fraud amount increased by 12.5%, to $54 billion. As the e-commerce volume is increasing and various online services are becoming more popular, the number of sites to which an average Internet user subscribes is increasing rapidly. Given the limited memory capacity of human beings, an Internet user's login credentials (in the form of a combination of a user ID and a password) are usually reused over multiple accounts, which can cause significant security problems. In this study, we address the vulnerability of login credentials. First, based on a unique Internet user data set, we analyze the behavioral characteristics of login credentials usage. We find that the same login credentials are used for many more accounts and reused much more often than previously expected. Furthermore, usage patterns are found to be quite skewed. Second, building on a network perspective of login credentials usage, we suggest a vulnerability measure of an individual's login credentials and analyze the vulnerability of current Internet users. The resulting information is valuable not only to the research community but also to managers and policy makers striving to reduce security vulnerability.  相似文献   

What’s Next? The Future of Digital Entertainment     

Allison Eden  Sun Joo Ahn 《Communication Research Reports》2018,35(5):379-380

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Overview on permanent magnetic actuator     

SA Peng-fei ZHAO Min FANG Shu-hua 《重庆大学学报(英文版)》2006,5(1):19-23

1 Introduction [1-3]The permanent magnetic actuator (PMA) technology first showed up in 1990s. It adopts a new working theory and a novel structure. With the combination of electrical magnetism and permanent magnetism, it can realize all functions of a br…  相似文献   

激光标刻系统研究综述   总被引：6，自引：1，他引：6  

赵巍  撒昱 《天津工程师范学院学报》2006,16(1):22-24,38

在总结激光打标现状的基础上，着重从硬件软件两个方面阐述了振镜扫描激光标刻系统的组成、工作原理及存在的问题，通过举例展现了激光标记的优点，并对其发展趋势进行了展望。  相似文献   

Examining the influence of teacher behavior and curriculum-based movement breaks     

Alicia L. Fedewa  Colleen Cornelius  Heather E. Erwin  Soyeon Ahn  Claire Stai 《The Journal of educational research》2018,111(5):584-593

Little research has explored the impact of teacher behavior in the relationship between classroom movement breaks and student outcomes. The authors' primary purpose was to explore teacher behavior during classroom movement breaks to determine if teacher behavior served as a moderating variable in the relationship between physical activity and student achievement. The second major aim was to examine these relationships across two different types of movement breaks: (a) academic-content movement breaks and (b) aerobic-based movement breaks. Children (n = 466) in Grades 3–5 from four elementary schools served as participants in the study. Results found that teachers who encouraged students to move and teachers who moved themselves did not necessary have students with higher activity levels during the movement breaks. However, significant differences across the type of movement break provided were found. Implications and limitations are discussed.  相似文献   

加入WTO与我国少数民族人才培养     

萨茹拉  曹仁祥 《民族教育研究》2003,14(2):34-36

目前我国少数民族地区总体教育水平相对落后，各类人才总量不多、水平不高。加入WTO对少数民族人才培养提出了更高的要求。少数民族地区人才培养的现念要更新，要进一步明确人才培养的层次与目标，建立多层次的人才培养网络，并加大中央财政对少数民族地区人才培育的投入。  相似文献   

少数民族女性大学生就业问题探索   总被引：3，自引：0，他引：3  

萨茹拉  曹仁祥 《民族教育研究》2006,17(1):63-66

目前大学生就业问题研究越来越得到社会各界的关注，而少数民族女大学生就业问题是一个十分重要的部分。面时少数民族女大学生就业中存在的诸多问题，应采取培养综合素质、塑造复合型人才、适当调整就业观念、加强相关的职业技能培训等措施来提升其就业能力。使她们更好地适应社会的需求。  相似文献   

负载指数法在内蒙古各盟市水资源承载力评价中的应用     

晓兰  萨础日拉  李轩然 《唐山学院学报》2016,29(6):25-30

运用负载指数法对内蒙古各盟市水资源的开发前景进行了对比研究。结果表明:由于内蒙古自治区各盟市人口数量、降水量、水资源分布以及经济发展程度不同,导致其水资源开发利用程度也不一样,存在着明显的空间差异。但是整体来看,除了呼伦贝尔市,各个盟市的水资源开发利用程度都比较高、开发利用潜力比较低,开发条件很不乐观。因此,应该从社会、经济、环境整体系统出发,合理利用水资源,努力改善水环境。  相似文献