• Journal of the Korea Society of Computer and Information
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• v.23 no.6
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• pp.81-89
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• 2018

In this paper, we propose to investigate the existing EPL education related studies and to collect the total effect size for the improvement of high-level thinking through meta-analysis and to confirm the effect size according to various variables. So, we have objectively identified and generalized the practical effects of EPL education on the various elements of high-level thinking and high-level thinking. The results of the meta-analysis showed that 1) EPL is a teaching-learning tool that greatly improves students' high-level thinking. 2) Education based EPL has greatly contributed to the enhancement of creative thinking and logical thinking among high-level thinking. 3) Kodu, App Inventor, Scratch, and Dolittle was confirmed that the effect on the improvement of high-level thinking was great.

• The Journal of Natural Sciences
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• v.8 no.1
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• pp.109-114
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• 1995

For effective management of statistical database, statistical summary information must be provided by accessing directly the precomputed summary data from summary database to store and manage meta database for supporting statistical analysis and providing users with statistical summary information. In order to support effectively the use of summary database, we do the design and implementation of meta database and manager having a hierarchical structure as a data dictionary/directory and operation method is presented.

• Journal of the Korean Data and Information Science Society
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• v.27 no.4
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• pp.1101-1113
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• 2016

This study was conducted to analyze the effects of parenting programs for children with disabilities through meta-regression analysis of experimental studies published in Korea. Twenty-two studies with a randomized or non-randomized control group prepost test design were included in the analysis. Parenting programs had a significant effect on parenting stress (ES= -1.08, p <.001, $I^2=67.4%$), parenting ecacy (ES=0.72, p <.001, $I^2=58.0%$) and self-esteem (ES=0.58, p =.016, $I^2=0$). The meta-regression analysis showed that research designs and therapy providers had different effects on dependent variables. Results support that parenting programs are helpful for parents of children with disabilities in reducing parenting stress and improving parenting efficacy, and self-esteem.

• Journal of the Korea Society of Computer and Information
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• v.23 no.11
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• pp.239-246
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• 2018

In this paper, we propose to investigate the existing SW education related studies and to collect the total effect size for the improvement of computational thinking(CT) through meta-analysis and to confirm the effect size according to various variables. So, we have objectively identified and generalized the practical effects of SW education on the various variable. The results of the meta-analysis showed that 1) the overall effect of SW educational activities on CT improvement was 'Hedges' g=0.643', so SW educational activity can get a CT improvement of about 24% over other educational activities. 2) EPL is a SW teaching-learning method that greatly improves students' CT. 3) Since SW education can be guaranteed to improve CT among elementary school students and university students, essential SW education for these should be further promoted. And it was found that SW education activity were more effective for CT improvement in small cities & rural areas than big cities, but the cause was not identified, so further study will be required.

• Proceedings of the Korea Information Processing Society Conference
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• 2013.11a
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• pp.1078-1080
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• 2013

본 논문에서는 5.1 채널 입체 음향 오디오 신호를 2채널의 헤드폰으로 재생하기 위해 사용하는 HRTF(Head-related transfer funcion) DB를 다룬다. 다양한 HRTF DB의 사례를 분석하고, 이를 통해서 더 나은 HRTF DB를 설계 한다. 기존의 HRTF DB에 Audio Meta data를 이용하여 파일의 정보를 저장하고, 이를 DB에 저장함으로써 Meta data를 비교 검색하고 저장함으로써 편의성을 높인다. 또한 기존의 HRTF DB들이 오래 되고 현재의 시스템에 맞지 않기 때문에 이를 현재의 시스템에 맞게 Converting하고 UI를 3D로 구현함으로써 UX를 높이고 직관성을 개선함으로써 사용자 접근성을 높인다. 이를 통해서 HRTF DB의 범용성을 개선하고 관련 연구에 효율적으로 사용할 수 있게 될 것이다.

• Journal of the Korean Data and Information Science Society
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• v.22 no.4
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• pp.717-726
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• 2011

The present study was carried out to summarize the effect of green tea in the diabetic rats by meta-analysis related studies. The association measure to test effect of green tea was Hedges' standardized mean difference. In this particular fixed effect model, body weight was significantly increased. Also, blood glucose, triglycerides were significantly decreased. In this case of heterogeneous variable, random effect model was applied. In this model, body weight was significantly increased. Also, blood glucose was significantly decreased in green tea treated group. According to the Meta-regression analysis, duration of injection was not significant for variables.

• The Journal of Information Technology
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• v.5 no.4
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• pp.73-79
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• 2002

In this paper, I will propose the Niche-Meta Genetic Algorithm that has a multi-mutation operator for design of fuzzy controller. The gene in the proposed algorithm is formed by several parameters that represent the crossover rate, mutation rate and input-output membership functions. The optimization of fuzzy membership function is performed with local search on sub-population and the optimal structure is constructed with global search on total-population. The multi-mutation is selected under basis of the result of local evolution. A simulation for 2 D.O.F wheeled-mobile robot is showed to prove the efficiency of the proposed algorithm

• The KIPS Transactions:PartA
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• v.10A no.6
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• pp.651-656
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• 2003

Emerging technologies, such as multimedia and mobile computing, require that middleware platforms can support high adaptability in order to provide more flexible services in heterogeneous environments. To support high quality of service in distributed wired/wireless environments, it will be necessary for applications and middleware to be aware of changes in users requirements as well as environmental conditions, also to be able to adapt their behaviour as such changes. According to the needs of adaptability supporting in middleware, we structure a component-based, mobile agents framework in base level and meta level by using reflection. We propose concepts of meta agents and meta-service agents that are able to reflect changes made by mobile agents to the system. At the meta level of our framework, meta agents monitor execution of mobile agents and it is possible to provide dynamic adaptation of users requirements, deployment of application services and service customization with meta agents and meta-service agents.

• Journal of Digital Convergence
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• v.11 no.5
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• pp.437-442
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• 2013

To IT convergence study tourism the convergence of IT and tourism in recent years has emerged as a discipline in the future. The purpose of this study, quality of tourism information systems using u-smart content information about design and implementation. This create the basic processes and data that you can analyze the average propensity of tourism and tourism tourists tourist information quality by implementing patterns of information in the template library content can be. Tourist information and tourist's propensity to take advantage of smart apps and XMI created and implemented by the appropriate content information on the quality of the tourism information content can be seen in real-time, this paper have the advantage of being Connection relationship meta-model through the inter-related processes, as well as Smart App can be meta-modeled. Quality by implementing the content of the information tourism information and helps in the development of the future tourism policy, in which you can design a digital model to determine the propensity of tourists.

• The Transactions of the Korea Information Processing Society
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• v.7 no.6
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• pp.1746-1752
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• 2000

In this paper, a cache mechanism is proposed to improve the speed of query processing in distributed director database systems. To decrease search time of requested objects and query processing time. query requests and results about objects in a remote site are stored in the cache of a local site. Cache system architecture is designed according to the classified information. Cache schema are designed for each cache information. Operational algorithms are developed for meta data cache which has meta data tree. This tree improves the speed of query processing by reducing the scope of search space. Finally, performance evaluation is performed by comparing the proposed cache mechanism with X500.