International Journal of Contents最新文献_第6页

A Workflow Execution System for Analyzing Large-scale Astronomy Data on Virtualized Computing Environments 虚拟化计算环境下大规模天文数据分析的工作流执行系统

International Journal of Contents Pub Date : 2020-01-01 DOI: 10.5392/IJOC.2020.16.4.016

Junglok Yu, Du-seok Jin, I. Yeo, Heejun Yoon

{"title":"A Workflow Execution System for Analyzing Large-scale Astronomy Data on Virtualized Computing Environments","authors":"Junglok Yu, Du-seok Jin, I. Yeo, Heejun Yoon","doi":"10.5392/IJOC.2020.16.4.016","DOIUrl":"https://doi.org/10.5392/IJOC.2020.16.4.016","url":null,"abstract":"The size of observation data in astronomy has been increasing exponentially with the advents of wide-field optical telescopes. This means the needs of changes to the way used for large-scale astronomy data analysis. The complexity of analysis tools and the lack of extensibility of computing environments, however, lead to the difficulty and inefficiency of dealing with the huge observation data. To address this problem, this paper proposes a workflow execution system for analyzing large-scale astronomy data efficiently. The proposed system is composed of two parts: 1) a workflow execution manager and its RESTful endpoints that can automate and control data analysis tasks based on workflow templates and 2) an elastic resource manager as an underlying mechanism that can dynamically add/remove virtualized computing resources (i.e., virtual machines) according to the analysis requests. To realize our workflow execution system, we implement it on a testbed using OpenStack IaaS (Infrastructure as a Service) toolkit and HTCondor workload manager. We also exhaustively perform a broad range of experiments with different resource allocation patterns, system loads, etc. to show the effectiveness of the proposed system. The results show that the resource allocation mechanism works properly according to the number of queued and running tasks, resulting in improving resource utilization, and the workflow execution manager can handle more than 1,000 concurrent requests within a second with reasonable average response times. We finally describe a case study of data reduction system as an example application of our workflow execution system.","PeriodicalId":31343,"journal":{"name":"International Journal of Contents","volume":"16 1","pages":"16-25"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70629038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Advantages of Virtual Reality in Skill Development Training Based on Project Comparison (2009-2018) 基于项目对比的虚拟现实技术在技能开发培训中的优势(2009-2018)

International Journal of Contents Pub Date : 2020-01-01 DOI: 10.5392/IJOC.2020.16.2.019

S. Magar, Suk, Haejung

引用次数: 4

Using RESRAD-BUILD for Potential Radiation Dose Estimation the Korea Research Reactor-1 When It Opens to the Public as a Memorial Hall 利用RESRAD-BUILD估算韩国研究堆1号作为纪念馆对外开放时的潜在辐射剂量

International Journal of Contents Pub Date : 2020-01-01 DOI: 10.5392/IJOC.2020.16.2.102

Lee Sangbok, Yoon Yongsu, Kim Sung-chul

{"title":"Using RESRAD-BUILD for Potential Radiation Dose Estimation the Korea Research Reactor-1 When It Opens to the Public as a Memorial Hall","authors":"Lee Sangbok, Yoon Yongsu, Kim Sung-chul","doi":"10.5392/IJOC.2020.16.2.102","DOIUrl":"https://doi.org/10.5392/IJOC.2020.16.2.102","url":null,"abstract":"The purpose of this study was to estimate and analyze the potential radiation dose that the future visitors and the cleaning staff will be exposed to when the KRR-1 reactor is converted into a memorial hall. The radiation doses were estimated using the RESRAD-BUILD software, where case, building, receptor, shielding, and source parameters were applied as the input data. Also, the basic data for the assessment of the radiation doses were determined in an indirect manner using the data on the waste generated during the decommissioning process of the reactor. The assessment results indicate that the potential radiation dose to the visitors and the cleaning staff will be less than 1 mSv, the annual dose limit for the general public. However, if anyone for a significant period of time is close to the reactor, the overall dose will increase. The radiation dose for the future visitors and the cleaning staff was determined to be lower than the annual dose limit for the general public. Given such a risk, systematic measures, such as periodic monitoring or limiting hours, are imperative.","PeriodicalId":31343,"journal":{"name":"International Journal of Contents","volume":"16 1","pages":"102-108"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70628590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Writing Listening Logs and Its Effect on Improving L2 Students' Metacognitive Awareness and Listening Proficiency 写作听力日志对提高二语学生元认知意识和听力水平的影响

International Journal of Contents Pub Date : 2020-01-01 DOI: 10.5392/IJOC.2020.16.4.050

You-Jin Lee, Kyung-Whan Cha

{"title":"Writing Listening Logs and Its Effect on Improving L2 Students' Metacognitive Awareness and Listening Proficiency","authors":"You-Jin Lee, Kyung-Whan Cha","doi":"10.5392/IJOC.2020.16.4.050","DOIUrl":"https://doi.org/10.5392/IJOC.2020.16.4.050","url":null,"abstract":"This study investigated whether writing weekly listening logs could influence college English learners’ metacognitive awareness and listening proficiency. In addition, the Metacognitive Awareness Listening Questionnaire (MALQ) was applied to examine the learners’ knowledge of their listening process. It is process-oriented research conducted by analyzing the MALQ and students’ listening logs as to how their metacognitive awareness and listening proficiency have changed during the semester. Eighty-nine students who took an English listening practice course at a university participated in this study. The research findings are as follows. First, it turned out that there was a significant relationship between EFL university students’ listening comprehension and some subscales of metacognitive awareness. Second, the students had an opportunity to reflect on learning through regular listening activities, and weekly listening logs, which included important information about listening process and practice. Third, as the students' listening proficiency increased at the end of the semester, it was found that introducing listening logs along with classroom lessons helped the students improve their listening ability. Finally, the high proficiency group students used multiple strategies simultaneously, regardless of the type of listening strategies, while the low proficiency group students used one or two limited listening strategies. However, the low proficiency group students may have had trouble expressing their ideas in English or recognizing the listening strategies they used, not because they did not use a lot of listening strategies. Therefore, teachers should regularly check if students are following their instructions and help them use appropriate strategies for better understanding.","PeriodicalId":31343,"journal":{"name":"International Journal of Contents","volume":"16 1","pages":"50-67"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70629310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Extending the Theory of Intercultural Public Relations: Influence of Power in the Intersection of Cultural Identity, Social Capital and Social Control for Korean American professionals 跨文化公共关系理论的延伸:在文化认同、社会资本和社会控制的交集中，权力对美籍韩裔专业人士的影响

International Journal of Contents Pub Date : 2020-01-01 DOI: 10.5392/IJOC.2020.16.2.051

Jang Ahnlee

引用次数: 0

GIS-Based Research on Location and Spatial Characteristics of the Slum in Daejeon 基于gis的大田贫民窟区位与空间特征研究

International Journal of Contents Pub Date : 2020-01-01 DOI: 10.5392/IJOC.2020.16.2.030

Dong-Seon Kim, Mo SeonHee

引用次数: 0

Research on the Environment Design of Smart Entrepreneurship Community Based on the Needs of Entrepreneurs 基于企业家需求的智慧创业社区环境设计研究

International Journal of Contents Pub Date : 2020-01-01 DOI: 10.5392/IJOC.2020.16.2.001

Yu Renyou, Qiangqiang

引用次数: 0

Do Gender, Types of VR Game, & Virtual Presence Matter in VR Games? 性别、VR游戏类型和虚拟存在对VR游戏有影响吗?

International Journal of Contents Pub Date : 2020-01-01 DOI: 10.5392/IJOC.2020.16.4.078

Namhyun Um

引用次数: 1

The Effect of Service Quality on the Reuse Intention of a Chatbot: Focusing on User Satisfaction, Reliability, and Immersion 服务质量对聊天机器人重用意图的影响:基于用户满意度、可靠性和沉浸感

International Journal of Contents Pub Date : 2020-01-01 DOI: 10.5392/IJOC.2020.16.4.001

Min-jae Kim, Byeng-Hee Chang

{"title":"The Effect of Service Quality on the Reuse Intention of a Chatbot: Focusing on User Satisfaction, Reliability, and Immersion","authors":"Min-jae Kim, Byeng-Hee Chang","doi":"10.5392/IJOC.2020.16.4.001","DOIUrl":"https://doi.org/10.5392/IJOC.2020.16.4.001","url":null,"abstract":"This study examined the impact of chatbot service quality (process quality, outcome quality, and servicescape quality) on user satisfaction and reliability by identifying the relationships between user satisfaction, reliability, immersion, and the paths of three variables influencing reuse intention. The survey was conducted of Korean users in their teens and 70s who had experience using chatbot services. A total of 218 convenience samples were extracted and the data analyzed. By the IS success and SERVQUAL model, the results of structural equation modeling revealed that the chatbot service quality did not affect user satisfaction and reliability. However, user satisfaction and reliability of the chatbot services were shown to lead to reuse intention, and user satisfaction was shown to affect immersion and immersion in reliability. The results showed that satisfaction, reliability, and immersion in the chatbot services were important factors in the chatbot reuse intention. Through the satisfaction and reliability gained through the service, the users wanted to reuse the chatbot services, especially the chatbot services that gained reliability, which will have a greater impact on reuse intention. We can use these results as marketing information to attract loyal customers by identifying the reuse intention of the chatbot service users.","PeriodicalId":31343,"journal":{"name":"International Journal of Contents","volume":"16 1","pages":"1-15"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70629282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

A Genetic Algorithm for Solving a QFD(Quality Function Deployment) Optimization Problem 求解质量功能部署优化问题的遗传算法

International Journal of Contents Pub Date : 2020-01-01 DOI: 10.5392/IJOC.2020.16.4.026

Jaewook Yoo

引用次数: 0