• Journal of the Korean Institute of Telematics and Electronics C
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• v.36C no.2
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• pp.37-45
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• 1999

CORBA IDL and RMI, the representative of distributed object model, support different approaches for distributed computing environments. CORBA approach does not support the application generated by RMI, even though it supports multiple programming languages. Object translation system between RMI to CORBA is designed and implemented for interoperability of distributed objects on the two different distributed programming environments. Suggested system is considered binding, inheritance, polymorphism, object passing, and callback which are key properties on the distributed objects. To validate the usefulness of the proposed system, we adopt a model for distrubuted objects and implement it as an application on the RMI environment. And, we translated it to an application on the CORBA environment. We observed the performance of translated application in the respect of inheritance, object passing, polymorphism across the machine boundary. Experiments showed that performance of distributed objects, those generated by translation system and those implemented on the CORBA environment, is equivalent.

• KOREAN POULTRY JOURNAL
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• v.29 no.9 s.335
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• pp.168-173
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• 1997

효과적인 백신 프로그램을 디자인하기 위해서는 질병과 면역에 대한 기본적인 이해가 필수적이다. 면역에 대해서 이해하기 위해서는 크게 체액성 면역과 세포성 면역으로 구분하여 이해하는 것이 유용할 수 있으며, 또한 이 두 가지 기전은 서로 상호협동적으로 작용한다는 사실을 이해하여야 한다. 숙주동물(닭)이 병원체이든 백신이든 일단 항원에 한 번 노출이 되면 이를 기억하는 기억 세포를 생성하여 두 번째 노출되었을 때 폭발적인 면역반응이 일어나도록 한다. 순환항체가 형성이 되면, 이 항체는 난황을 통하여 후대 병아리에게 전달될 수 있다. 면역의 형성은 백신이 가진 항원의 특성과 백신의 타입(생독, 사독)에 따라 다른 방식으로 나타난다. 면역에 대한 기본적인 개념을 충분히 숙지하고 다음의 사항을 고려하면 효과적인 백신 프로그램을 선택하기가 용이하다. (1) 전례 : 어떤 프로그램이 효과적이었는가? (2) 질병 : 어떤 질병이 문제가 되고 있는가? (3) 균주 : 균주의 차이는 중요한가? (4) 관리 : 백신의 사용을 불필요하게 할 효과적인 사양관리가 이루어질 수 있는가? (5) 모체이행항체 : 모체이행항체가 적절한 방어력을 가질 수 있을까? (6) 면역증강효과 : 그 중요성과 접종시기가 숙지되어 있는가? (7) 접종기술 : 접종기술에 문제가 있는데 프로그램이 제대로 효과를 발휘할 수 있을까?

• Journal of the Society of Naval Architects of Korea
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• v.29 no.3
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• pp.149-156
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• 1992

An efficient preprocessor is developed for the finite element structural analysis of a ship's hull module. A hull module structure is divided into three groups for easy data handling : longitudinal members, transverse members, and transverse bulkheads. Based on the classification rules and design practices at shipyards, the preprocessor can create finite element nodes, elements, boundary conditions, and loadings automatically. By connecting the preprocessor with the ANSYS program, we can obtain the results of ship structureal analysis more efficiently. Applied to a typical double-hull oil tanker, the present preprocessor shows various advantages over conventional general-purpose preprocessors.

• International Commerce and Information Review
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• v.17 no.3
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• pp.323-358
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• 2015

This study strives to identify effects of the relationship between the loyalty program and service loyalty through focusing on the role of the loyalty program which is used as a means of promotion in relationship marketing. According to the result of the empirical testing, the higher the economical usefulness and psychological usefulness (the perceived value of the loyalty program) are, the higher the customer satisfaction rate was. Also, the higher the satisfaction of the loyalty program, the more credibility increased. Furthermore, the higher credibility was the more positive the influencing relationship with a heightened level of commitment was found to be. It was discovered that different factors such as customer satisfaction, customer trust, customer commitment in the loyalty program have a positive influence on service loyalty. Loyalty program satisfaction, along with loyalty program credibility and commitment indirectly affected service loyalty.

• Journal of Elementary Mathematics Education in Korea
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• v.22 no.2
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• pp.161-181
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• 2018

This study involved an investigation of prospective elementary teachers' preconceptions and experiences of diagrams and their ability to draw diagrams in solving math word problems. A questionnaire and two math word problems were administered to prospective elementary teachers who began to taking an introductory mathematics education course. The results from the analysis of their responses to the questionnaire items indicate that prospective elementary teachers appreciate the value of diagrams as tools for problem solving and communication. In addition, prospective elementary teachers have the will not only to teach their future students how to use diagrams but also to encourage them to draw diagrams in solving math word problems. However, the results also indicates that prospective elementary teachers neither use diagrams spontaneously in their math problem solving activities nor have confidence in drawing useful diagrams. Prospective elementary teachers also manifested low scores on the questionnaire items asking whether they were taught how to draw useful diagrams or encouraged by their teachers to use diagrams in their previous learning experiences. The results from the analysis of the diagrams that prospective elementary teachers drew in solving math word problems showed that most of them had difficulty drawing diagrams that represent their reasoning and solving process.

• Journal of Digital Convergence
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• v.20 no.4
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• pp.541-551
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• 2022

The purpose of this study is to propose implications that can be effectively applied to the educational field by exploring the intention to use of augmented reality-based educational contents for college students. To this end, a survey was conducted with college students, and confirmatory factor analysis, correlation analysis, reliability analysis, and path analysis were performed using the SPSS 21.0 program and the AMOS 21.0 program. The results of the study were presented as follows. First, individual innovativeness influenced positively on perceived ease of use, perceived usefulness, and perceived enjoyment. Second, social influence influenced positively on perceived ease of use, perceived usefulness, and perceived enjoyment. Third, perceived enjoyment influenced positively on perceived usefulness. Fourth, perceived ease of use influenced positively on perceived usefulness and perceived enjoyment. Fifth, except for perceived ease of use, perceived usefulness and perceived enjoyment influenced positively on intention to use.

• Journal of Convergence for Information Technology
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• v.10 no.6
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• pp.119-127
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• 2020

The purpose of this study is to verify the effect on the creativity and Usability of young Children by applying design education pro young Children gramfor using 3D printer to the kindergarten field and, through the results, to prepare a realistic way to increase the utilization of 3D printer media in infant classrooms. In order to achieve this research purpose, 38 infants aged 5 from G kindergarten located in metropolitan A are divided into each experimental group and comparative group, and from August 2017 to January 2018, data were collected through 15 experiments over a period of about 6 months. As a research tool, in the Korean version of Torrance's Creativity Test, an infant shape test and a usability test scale were used, and the data processing and analysis were conducted through technical statistical methods and covariance analysis. As a result of the study, the program using 3D printer had a statistically significant effect on promoting creativity and Usability of young Children, and in particular, it had a remarkable effect on the elaboration of creativity composition. Based on these results, discussions on the existing Nuri process, which mainly aims to cultivate creative talents, the possibility of connecting 3D printers more widely and the role of teachers were made.

• Proceedings of the Korea Information Processing Society Conference
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• 2013.05a
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• pp.948-950
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• 2013

메모리를 다루는 프로그램의 시각화는 알고리즘 학습, 디버깅에 유용하게 사용될 수 있다. 본 논문에서는 도구에 독립적이며 프로그램 실행 후에도 재사용이 가능하도록 메모리 상태를 시각화하는 언어를 제안한다. 본 논문에서는 제안된 시각화 언어의 문법과 의미를 설명한다. 제안된 시각화 언어의 유용성을 간단한 메모리 할당, 해제를 수행하는 프로그램 소스의 예를 통해 설명한다.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.24 no.8
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• pp.133-141
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• 2010

MG(Microgrid) is a small power supply system located on-site that can supply both the electricity and the hot-water simultaneously. Engineering S/W is requested to construct Microgrids economically. We developed Engineering S/W that can combine DERs (Distributed Energy Resources) most economically using the linear programming and estimate of the economic. Developed S/W was programed using GAMS(General Algebraic Modeling System) and it is composed of the optimal DER combination module and forecasting module of renewable energy's output. We embody it based on MS Excel considering the user's convenience and we show its validity through a case study. We think that developed S/W will be very useful for planning MGs and energy supply.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.10a
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• pp.343-346
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• 2012

학생들이 프로그래밍 교육에서 학습에 어려움을 겪고 있는 객체지향 프로그램 개발 능력을 향상시킬 수 있는 교육방법으로서 이 논문에서는 시각 프로그래밍 교육 방법론과 교과과정을 도입한다. 3D 프로그래밍 환경을 제공하여 게임 형태의 프로그램을 객체지향 프로그래밍 방식으로 쉽게 작성할 수 있는 Alice 언어를 정규 교과과정에 도입하여 학생들의 프로그래밍 언어에 대한 이해도의 향상과 프로그래밍에 대한 학습 의욕을 고취하여 능력 있는 프로그래머의 양성에 기여할 수 있을 것으로 기대된다. 시각 프로그래밍 교육 방법의 도입에 대한 성과를 분석하기 위하여 프로그래밍 교육의 유용성을 분석할 수 있는 평가 지표를 제시하고 학생들의 프로그래밍 학습 효과를 분석한다.