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An Efficient Content Search Progress Sharing among Mobile Network Agents 移动网络代理间高效的内容搜索进度共享
Y. Shiraki, S. Sugawara
This paper deals with a searching problem of digital content items with mobile agents in the network, the topology of which is assumed to be unknown to the agents in the initial state. We previously proposed a scheme with the use of plural management nodes, to which the agents send their search progress individually. The entire search progress can be shared by all the agents with the use of communications among the management nodes. However, because it takes some time for the progress sharing through the plural management nodes, there often exists a time lag between the actual total search progress and its recognition by the agents. This makes plural agents search the same nodes redundantly, and degrades the total search efficiency. Accordingly, in this paper, we propose an improved content search scheme that manages the search progress by a single node, and discuss the efficiency of the scheme using computer simulations.
本文研究了网络中移动agent对数字内容项的搜索问题,假设网络的拓扑结构对于处于初始状态的agent是未知的。我们先前提出了一种使用多个管理节点的方案,代理将其搜索进度单独发送到多个管理节点。通过管理节点之间的通信,所有代理可以共享整个搜索过程。然而,由于多个管理节点之间的进度共享需要一定的时间,因此在实际的总搜索进度与智能体对其的识别之间往往存在一定的时间滞后。这使得多个agent冗余地搜索相同的节点,降低了总搜索效率。因此,本文提出了一种改进的内容搜索方案,通过单节点管理搜索进度,并通过计算机仿真讨论了该方案的效率。
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引用次数: 0
The Performance of a Metaheuristic Algorithm for Finding a Maximal Weight Clique in the Fill-in-Blank Problem 一种查找填空问题中最大权团的元启发式算法的性能
Kazuho Kanahara, K. Katayama, N. Funabiki, E. Tomita
A programming education is one of the most important fields in Information and Education Technology. Funabiki et al. have developed a Web-based Java Programming Learning Assistant System (JPLAS). JPLAS mainly provides two types of problems, namely the code writing problem and the fill-in-blank problem, to support students' self-studies at various learning levels. Particularly in the fill-in-blank problem (FIBP), the system requires an efficient algorithm to find a maximal clique of the compatibility graph in advance in order to obtain a maximal set of blank elements with unique answers. In this paper, we investigate the performance of a metaheuristic algorithm based on an iterated local search for solving the maximum weight clique problem (MWCP), which is an important generalization of the maximum clique problem, given as an extension of the compatibility graph in the FIBP. Computational results show that our metaheuristic algorithm is capable of finding satisfactory weighted cliques efficiently for well-known benchmark graphs and the performance of our algorithm is comparable to those of state-of-the-art metaheuristics for the MWCP.
编程教育是信息与教育技术中最重要的领域之一。Funabiki等人开发了一个基于web的Java编程学习辅助系统(JPLAS)。JPLAS主要提供两种类型的问题,即代码编写问题和填空问题,以支持学生在不同学习水平上的自学。特别是在填空问题(FIBP)中,系统需要一种高效的算法来提前找到相容图的最大团,以获得具有唯一答案的最大空白元素集。本文研究了一种基于迭代局部搜索的元启发式算法求解最大权团问题(MWCP)的性能。MWCP是最大权团问题的一个重要推广,是FIBP中兼容图的扩展。计算结果表明,我们的元启发式算法能够有效地对已知的基准图找到满意的加权团,并且我们的算法的性能与最先进的MWCP元启发式算法相当。
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引用次数: 0
A Proposal of Preprocessing Stage for Active Access-Point Configuration Algorithm in Elastic WLAN System 弹性WLAN系统中主动接入点配置算法的预处理阶段方案
M. Saha, N. Funabiki, Sumon Kumar Debnath, W. Kao, S. Tajima, T. Higashino
Nowadays, the wireless local-area network (WLAN) has been deployed everywhere as a common access medium to the Internet. In WLAN, the network configuration should be optimized according to traffic demands and network environments which will change dynamically. Therefore, we have studied the active AP configuration algorithm for the elastic WLAN system to achieve the elasticity of WLAN. However, this algorithm requires a long CPU time in the large search space when numerous APs are deployed in the field. In this paper, we propose a preprocessing stage for the AP configuration algorithm to reduce the CPU time by limiting the number of APs in advance. Both the exhaustive and heuristic approaches are adopted, where either one should be used depending on the network topology. Through extensive simulations using the WIMNET simulator, the effectiveness of the proposal is verified.
目前,无线局域网(WLAN)作为Internet的通用接入媒介已被广泛部署。在WLAN中,需要根据流量需求和动态变化的网络环境对网络配置进行优化。因此,我们研究了弹性WLAN系统的主动AP配置算法,以实现WLAN的弹性。但是,当现场部署大量ap时,该算法在较大的搜索空间中占用了较长的CPU时间。本文提出了AP配置算法的预处理阶段,通过预先限制AP的数量来减少CPU时间。我们采用了穷举和启发式两种方法,其中任何一种方法都应根据网络拓扑使用。通过WIMNET模拟器的大量仿真,验证了该方案的有效性。
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引用次数: 0
Health Communication Model Based on Character Education to Improve University Student Achievement in Midwifery 基于品质教育的健康沟通模式提高助产学大学生学习成绩
Ferry Fadzlul Rahman, Siti Noorbaya, Fahni Haris, H. Johan
Health communication is one of the core compulsory subjects of midwifery. The character-based on the health communication learned model aims to find out the effectiveness of the character education-based on the health communication learned model with a specific target of improving student achievement. This study, the method was Pre-Experimental with Posttest Only Control Group Design with a sample of 70 students divided into 2 groups: 35 treatment group respondents and 35 control group respondents. The results showed the effectiveness of the health education learned models based on the character education in improving the learning's achievement, Results of Data Analysis used the independent sample t-test of 0.035 <0.05, there were significant differences between the learning outcomes of the experimental / treatment group and the control group. It could be concluded that the character-based on the health communication learned model given to the midwifery students could improve the student's learning achievement.
健康传播学是助产学的核心必修课之一。基于健康传播学习模式的品格教育旨在探索以提高学生学习成绩为具体目标的基于健康传播学习模式的品格教育的有效性。本研究采用前测后测对照组设计,将70名学生分为两组,实验组35名,对照组35名。结果显示,以品格教育为基础的健康教育学习模式对提高学习成绩有显著效果,数据分析结果采用独立样本t检验(0.035 <0.05),实验组/治疗组的学习成绩与对照组有显著差异。由此可见,对助产学学生进行以健康沟通为基础的学习模式,可以提高助产学学生的学习成绩。
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引用次数: 3
Method for Driving High-pixel-density Displays 驱动高像素密度显示器的方法
Yi-Cheng Liu, Ting-Wei Chen, Yen-Ju Li, Yu-Cheng Fan
Universal high-pixel-density displays were introduced to consumers in 2012, including 8K and even 16K displays. Therefore, we propose a new method to design gate driver circuits and micro-scale device mass transfer-printing technologies in order to solve problems related to display border space and electron mobility. In this paper, the conceptual design is composed of mass transfer-printing technologies and a GOA driving circuit. We design a bidirectional low-leakage-current scan circuit that includes a crystalline substrate to provide higher performance and a smaller device (smaller than thin-film amorphous or polycrystalline silicon). We then use the mass transfer-printing technologies to transfer microscale chips onto the glass substrate. Next, we transfer our microscale chip onto the effective area of a panel, and the microscale chip provides gate drive signals for the display. The border becomes slimmer or even disappears. These types of displays are applied in large-screen video monitors, flexible displays, high-pixel-density displays, etc.Our chips were fabricated using the TSMC 180-nm CMOS process; a single chip can include 864 dual-side pins, and has lateral dimensions of 8286 μm × 21 μm.
通用高像素密度显示器于2012年向消费者推出,包括8K甚至16K显示器。因此,我们提出了一种新的方法来设计栅极驱动电路和微尺度器件传质印刷技术,以解决与显示边界空间和电子迁移率有关的问题。在本文中,概念设计由大量转移印刷技术和GOA驱动电路组成。我们设计了一个双向低漏电流扫描电路,其中包括一个晶体衬底,以提供更高的性能和一个更小的器件(小于薄膜非晶或多晶硅)。然后,我们使用质量转移印刷技术将微型芯片转移到玻璃基板上。接下来,我们将微型芯片转移到面板的有效区域,微型芯片为显示器提供栅极驱动信号。边界变得更细,甚至消失。这些类型的显示器应用于大屏幕视频显示器,柔性显示器,高像素密度显示器等。我们的芯片采用台积电180纳米CMOS工艺制造;单芯片可包含864个双侧引脚,横向尺寸为8286 μm × 21 μm。
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引用次数: 1
Can we use newspapers to predict job creation? 我们可以用报纸来预测就业机会吗?
Imane Khaouja, Ghita Mezzour, Kathleen M. Carley, I. Kassou
Newspapers report about new investments in the country, new firm's creation and national programs that aim to promote job creation. Using this information can help us predict and acknowledge about a part of job creation and better inform universities about developing sectors. However, most prior work focuses on predicting stock market movements using newspapers and overlooks job creation. In this paper, we want to investigate whether newspapers could predict the job market future needs in term of workforce. Therefore, we collect newspapers found online and job creation in 18 sectors. We use linear mixed models for longitudinal data and random forest to predict job creation in those sectors based on sector mentions in the newspapers articles. Our findings suggest that newspapers can contribute to our ability to understand the near future job creation by leveraging sector mentions in the newspapers for specific sectors. Moreover, our results show that we can approximately predict future job creation in the 18 sectors by predicting the number of job creation in those sectors.
报纸报道了该国的新投资,新公司的成立以及旨在促进创造就业机会的国家计划。利用这些信息可以帮助我们预测和认识就业创造的一部分,并更好地告知大学发展部门。然而,大多数先前的工作都集中在利用报纸预测股市走势,而忽略了创造就业机会。在本文中,我们想要调查报纸是否可以预测劳动力市场未来的需求。因此,我们收集了在网上找到的报纸和18个行业的就业机会。我们使用纵向数据和随机森林的线性混合模型,根据报纸文章中提到的行业来预测这些行业的就业创造。我们的研究结果表明,报纸可以通过利用报纸上对特定行业的行业提及,帮助我们理解近期创造就业机会的能力。此外,我们的结果表明,我们可以通过预测这些部门的就业创造数量来大致预测未来18个部门的就业创造。
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引用次数: 0
A Dropout Prediction Framework Combined with Ensemble Feature Selection 结合集成特征选择的辍学预测框架
Dan Ai, Tiancheng Zhang, Ge Yu, Xinying Shao
In recent years, with the rapid development of large-scale open online courses, low completion rate and high dropout rate have been important challenges for open online courses. Therefore, it is necessary to make effective prediction and timely intervention to ensure the completion of the course. Some of the traditional prediction models only use the features extracted manually from students' clickstream data, which is too subjective to guarantee the quality of features and affect the prediction accuracy. Others generate features automatically with finer granularity, but the problem of feature redundancy appears. In order to solve this problem, this paper proposes a comprehensive dropout prediction framework of MOOCs students. The framework can automatically extract features from clickstream data, and filter features with an integrated feature selection strategy based on clustering and weighted MaxDiff, and finally predict. Experiments show that the model can effectively improve the accuracy of prediction of dropout.
近年来,随着大规模网络公开课程的快速发展,低完成率和高辍学率成为网络公开课程面临的重要挑战。因此,有必要进行有效的预测和及时的干预,以确保课程的完成。一些传统的预测模型仅使用人工从学生点击流数据中提取的特征,这种方法过于主观,无法保证特征的质量,影响预测的准确性。其他方法自动生成更细粒度的特征,但存在特征冗余的问题。为了解决这一问题,本文提出了一个mooc学生退学综合预测框架。该框架可以自动从点击流数据中提取特征,并采用基于聚类和加权MaxDiff的综合特征选择策略对特征进行过滤,最后进行预测。实验表明,该模型能有效提高辍学预测的精度。
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引用次数: 2
Cyberbullying and Education: State of the Art and Bibliometric Analysis 网络欺凌与教育:最新技术和文献计量分析
M. González-Moreno, Cristina Cuenca-Piqueras, J. Fernández-Prados
The main objective of this paper is to show a state of the art of "cyberbullying". Thus, we have extracted the documents from databases in Web of Science (the search results of "cyberbull*" were 2,227) and they were examined with the bibliographic analysis tool VOSviewer. The analyses carried out on the documents were, on the one hand, descriptive, on the evolution of the number of articles on cyberbullying and the areas of research. On the other hand, the co-occurrences of the keywords and co-authorship, highlighting the nationality and the leading authors in number of citations. The results show a growth in the interest of investigating cyberbullying, specifically between psychology and education. The keywords focus on victimization and adolescence, although youth and gender have recently been highlighted. Despite the most frequent authors come from the United States and Spain which form two clusters, the most cited authors are researchers from Belgium in the area of psychology and communication studies. Cyberbullying affects adolescents and young people in mainly school contexts; this makes education for critical and active digital citizenship to prevent this type of behaviour among peers
本文的主要目的是展示 "网络欺凌 "的最新进展。因此,我们从 "科学网 "数据库("网络欺凌*"的搜索结果为 2 227 条)中提取了文献,并使用书目分析工具 VOSviewer 对其进行了研究。对这些文献进行的分析一方面是描述性的,即关于网络欺凌的文章数量和研究领域的演变。另一方面,对关键词的共同出现和共同作者进行了分析,突出了作者的国籍和被引用次数。结果表明,人们对网络欺凌的研究兴趣有所增长,特别是在心理学和教育学之间。关键词主要集中在受害情况和青少年,尽管最近也强调了青年和性别问题。尽管最常见的作者来自美国和西班牙,形成了两个集群,但被引用最多的作者是来自比利时的心理学和传播学研究人员。网络欺凌主要影响学校环境中的青少年;因此,需要开展批判性和积极的数字公民教育, 以防止同龄人之间发生此类行为。
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引用次数: 9
Research on Application of Frequent Pattern Growth Algorithm in Academic Early Warning 频繁模式增长算法在学术预警中的应用研究
Jiehao Zhang, Cuiling You, Jiawen Huang, Shijing Li, Yongxian Wen
The arrival of big data era has led to imperative management changes in the field of education. A large number of chaotic and ineffectively used of education big data exists in the process of intelligent campus construction. By combining big data technology with educational administration to improve students' learning skill and strengthen the construction of high-quality style of study. For example, this paper takes the final grades of 582 students of mathematics in a university from grade 2006 to grade 2015. Firstly, to eliminate the different impact of different teachers on the test paper scoring standards, we standardize the scores of all students. Secondly, we code the scores of each student using the improved Frequent Pattern Growth algorithm to the correlation between the failed courses (for convenience, we will abbreviate the Frequent Pattern as FP.). Then we find out the correlation degree between the failing courses by the jackknife method. Finally, for improving the academic early warning system, we verify the feasibility of the improved FP Growth algorithm for early warning of failing courses using the data of mathematics students majoring in grade 2016.
大数据时代的到来,使得教育领域的管理变革势在必行。在智能校园建设过程中,存在着大量的教育大数据混乱和无效利用。将大数据技术与教务管理相结合,提高学生学习技能,加强优质学风建设。以某大学2006级至2015级582名数学专业学生的期末成绩为例。首先,为了消除不同老师对试卷评分标准的不同影响,我们对所有学生的分数进行了标准化。其次,我们使用改进的频繁模式增长算法将每个学生的分数编码为不及格课程之间的相关性(为了方便,我们将频繁模式缩写为FP.)。然后用折刀法求出不及格课程之间的关联度。最后,为了完善学业预警系统,我们使用2016级数学专业学生的数据验证了改进的FP Growth算法用于不及格课程预警的可行性。
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引用次数: 2
Construction of the Online Open Courses of Mechanical Drawing in Chinese Colleges Based on Chinese XuetangX MOOC Platform 基于中国学堂x MOOC平台的高校机械制图在线开放课程建设
Jian-feng Song, Yong-gang Dong, Wenwu Wang
Massive Open Online Courses (MOOCs) need providing sufficient accessible learning resources for carrying out the online and offline learning, so it is very necessary to build the online learning resources for online open courses of mechanical drawing base on the requirements of outcome-based educations. In this study, characteristics of mechanical drawing courses in Chinese colleges and advances in MOOC and OBE were introduced, then the recording process of teaching videos and advertising video were introduced. Moreover, the questions of different type, discussion class and group project were designed and uploaded to the Online open courses of mechanical drawing in Chinese XuetangX MOOC Platform. This online open class of mechanical drawing had started to run since March 2018 and it has been running four times successfully based on the XuetangX MOOC Platform.
大规模在线开放课程(Massive Open Online Courses, MOOCs)需要为开展线上线下学习提供充足的可访问学习资源,因此基于成果教育的要求构建机械制图在线开放课程的在线学习资源是非常必要的。本研究首先介绍了我国高校机械制图课程的特点以及MOOC和OBE的进展,然后介绍了教学视频和广告视频的录制过程。设计了不同类型的问题、讨论课和小组项目,并将其上传到中国学堂x MOOC平台的机械制图在线公开课中。机械制图在线公开课于2018年3月开课,基于学堂x MOOC平台,已成功举办四届。
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引用次数: 0
期刊
Proceedings of the 2020 8th International Conference on Information and Education Technology
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