• 한국환경교육학회지:환경교육
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• 제16권2호
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• pp.65-73
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• 2003

This study has an aim to construct a reference frame to analyze the appropriateness of environmental education(EE) materials of elementary schools, and to search the basic direction of the scheme for analysis. In addition, this study has an aim to induce what the results of this analysis suggests for the development and reconstruction of EE materials. It was analyzed how truly EE materials reflected contents selected as an analysis scheme, after grasping practical use and features of textbooks, audio-visual materials, and a web-site that are typical materials in EE of elementary schools. The results in textbook analysis were that there were a human-centered environmentalism in the EE unit ("Environmentally Sound National Development", 5th Grade) of Social Studies. The result in analysis of audio-visual materials "Environmental Warrior, Zentaforce" of EBS, were that there are unhealthy environmentalism in that material. In other words, technology itself is considered as a almighty means to solve environmental problems. Finally, the result in web-site analysis were that the "Environmental Class" of Ministry of Environment did not have sound environmentalism. The above result of study shows us that the most important thing in developing and using the environmental education materials is to have sound environmental values and EE perspective, to evaluate EE material with various point of view, to judge its result, and to use it.

• 대한기계학회논문집
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• 제17권2호
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• pp.467-474
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• 1993

Viscous flow and heat transfer phenomena in an axisymmetric cylinder which models a diesel engine have been numerically studied. In order to search for a way to minimize numerical diffusion, the effectiveness and the appropriateness of two selected numerical schemes for convective terms in the governing equations have been tested. They are Linear Upwind Difference Scheme and Hybrid Scheme. Using a standard k-.epsilon. turbulence model, the calculation has been carried out basically up to 180.deg. of crank angle. As a result, it was shown from comparison with previous experimental data that Linear Upwind Difference Scheme is less influenced than Hybrid Scheme by the numerical diffusion and it was suggested that these effects of numerical diffusion can be more significant than those due to turbulence modeling.

• 산업공학
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• 제12권2호
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• pp.247-253
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• 1999

The main objective of this study is to quantify the appropriateness of the sensibility vocabularies used in sensibility ergonomic evaluation scheme by applying structural equation model. In the conventional sensibility ergonomic evaluation scheme, factor analysis is employed to classify various vocabularies into some common factors. However, since the vocabularies were chosen quite subjectively, it is difficult to ascertain that they represent the product attributes properly. It was shown in a case study that the structural equation model provides the quantitative results to verify whether the selected vocabularies are eligible for further steps of sensibility ergonomic evaluation.

• 한국산학기술학회논문지
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• 제17권2호
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• pp.8-14
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• 2016

오픈 소스 프로젝트가 다수의 개발자들에 의해 진행될 때 동일한 파일에 대한 여러 버전을 관리해 주는 버전 관리 시스템은 매우 유용한 도구로 사용되고 있다. 그러나 대부분의 기존 버전 관리 시스템들(SVN, Git 등)은 소스 코드 혹은 문서의 변경 이력을 주로 관리하고 있기 때문에 개발 환경의 변경이 발생할 때마다 개발자마다 직접 변경해야 하는 불편함이 있다. 이러한 불편함을 해소하기 위하여 본 논문에서는 오픈 소스 프로젝트를 위한 버전 관리 기법을 제시한다. 제시한 기법의 기본 개념은 컨테이너 방식의 가상화 도구인 도커를 이용하여 개발 환경을 포함한 이미지를 생성하고 이를 새로운 버전으로 관리한다. 제시한 기법의 기능적 타당성을 검토하기 위하여 서로 다른 OS(우분투12.04, 센트OS7)를 사용하는 호스트에 도커를 구축한 후 개발 환경의 변경 이력이 포함된 버전 관리를 실험하고 기존 버전 관리 시스템들과 비교 평가하였다. 그 결과 제시한 기법은 오픈 소스 프로젝트를 위한 편리한 버전 관리 기법이 될 수 있을 것으로 보인다.

• 철학연구
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• 제141권
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• pp.313-342
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• 2017

이 논문은 이익과 신후담의 사칠론에서 중절의 철학적 함의를 해명하고 있다. 논문에 따르면, 퇴계의 사단칠정론에서 사단과 중절한 칠정 사이의 관계 규정은 곤란한 문제로 남겨졌다. 이익은 중절한 칠정의 의미를 새롭게 분석함으로써 이 문제를 해결하고자 하였다. 그는 중절한 칠정의 도덕성을 인정하면서도 그것이 사단과 차별적이라는 점을 철학적으로 해명하고자 하였다. 공정무사한 공감자를 설정하여 이 문제를 풀고자 한 것이 그의 해법이었다. 이러한 이익의 생각은 중절의 윤리적 가치에 대해 참신한 재평가를 수행한 것이라는 점에서 의의가 있는 것이었다. 그러나 신후담은 스승 이익의 생각에 반대하면서 중절의 도덕적 가치를 평가 절하하였다. 신후담에 따르면, 성인(聖人)의 공칠정(公七情)과 중절(中節)한 칠정은 다른 것이었다. 성인의 공칠정은 공적 도덕성이 실현된 감정 상태이지만 중절한 칠정은 자연적 욕구와 생리적 기호가 적절한 상태에 놓인 것에 불과한 것이었다. 전자가 이발(理發)이라면 후자는 기발(氣發)인 것이다. 그는 이익에게서 모호하게 표현되었던 성인칠정(聖人七情)을 명백히 공(公)과 사(私)의 두 측면으로 차별화함으로써 퇴계학 전통의 이발(理發)을 한층 강화하였다. 여기에 이르러 사단과 칠정이라는 오래된 구분선은 해체되고 공(公)과 사(私)가 도덕 감정의 기준으로 부각되었다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2012년도 추계학술대회
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• pp.169-170
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• 2012

해상교통안전진단제도 도입('09.5.27) 이후 합리적 효율적인 제도 시행을 위한 노력은 계속되어 왔다. 하지만 최근에는 안전진단이 제대로 수행되고 있는지, 이에 의해 도출된 진단결과가 의미가 있는지 등 제도의 가치문제에 대한 논란이 이해당사자들을 중심으로 제기되고 있으며, 이러한 논의들은 진단에 대한 타당성 및 당위성을 찾지 못한 데서 기인하는 것으로 현 시점에서 제도에 대한 종합적이고 체계적인 검토를 통해 바람직한 제도를 정립해 나갈 필요가 있다. 본 연구에서는 평가에 대한 평가, 즉, 메타평가에 관한 이론을 적용, 문헌 연구와 전문가검토, 설문조사 등의 방법을 활용하여 안전진단의 분석 틀로서의 평가 모형을 설계하고, 검증을 통해 안전진단 평가에 적합한 메타평가 모형을 제시하였다. 본 연구결과가 해상교통안전진단의 메타평가 지표로서 활용되어 진단활동에 대한 전반적인 평가를 통해 제도 개선에 기여할 것으로 기대된다.

• ETRI Journal
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• 제44권6호
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• pp.903-914
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• 2022

Mobile and telecommunication networking uses temporary and random identifiers (IDs) to protect user privacy. For greater intelligence and security o the communications between the core network and the mobile user, we design and build a dynamic randomization scheme for the temporary IDs for mobile networking, including 5G and 6G. Our work for ID randomization (ID-RZ) advances the existing state-of-the-art ID re-allocation approach in 5G in the following ways. First, ID-RZ for ID updates is based on computing, as opposed to incurring networking for the re-allocation-based updates, and is designed for lightweight and low-latency mobile systems. Second, ID-RZ changes IDs proactively (as opposed to updating based on explicit networking event triggers) and provides stronger security (by increasing the randomness and frequency of ID updates). We build on the standard cryptographic primitives for security (e.g., hash) and implement our dynamic randomization scheme in the 5G networking protocol to validate its design purposes, which include time efficiency (two to four orders of magnitude quicker than the re-allocation approach) and appropriateness for mobile applications.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2003년도 ICCAS
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• pp.1305-1308
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• 2003

A new technique is presented to construct a predictive model of plasma etch process. This was accomplished by combining a backpropagation neural network (BPNN) and a genetic algorithm (GA). The predictive model constructed in this way is referred to as a GA-BPNN. The GA played a role of controlling training factors simultaneously. The training factors to be optimized are the hidden neuron, training tolerance, initial weight magnitude, and two gradients of bipolar sigmoid and linear functions. Each etch response was optimized separately. The proposed scheme was evaluated with a set of experimental plasma etch data. The etch process was characterized by a $2^3$ full factorial experiment. The etch responses modeled are aluminum (A1) etch rate, silica profile angle, A1 selectivity, and dc bias. Additional test data were prepared to evaluate model appropriateness. The GA-BPNN was compared to a conventional BPNN. Compared to the BPNN, the GA-BPNN demonstrated an improvement of more than 20% for all etch responses. The improvement was significant in the case of A1 etch rate.

• 대한예방의학회:학술대회논문집
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• 대한예방의학회 1994년도 교수 연수회(역학)
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• pp.129-136
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• 1994

A model was developed for a simple clinical trial in which graders had defined probabilities of misclassifying pathologic material to disease present or absent. The authors compared Kappa between graders, and efficiency and bias in the clinical trial in the presence of misclassification. Though related to bias and efficiency, Kappa did not predict these two statistics well. These results pertain generally to evaluation of systems for encoding medical information, and the relevance of Kappa in determining whether such systems are ready for use in comparative studies. The authors conclude that, by itself, Kappa is not informative Enough to evaluate the appropriateness of a grading scheme for comparative studies. Additional, and perhaps difficult, questions must be addressed for such evaluation.

• 한국수학교육학회지시리즈A:수학교육
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• 제43권2호
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• pp.115-137
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• 2004

In this paper, we verified the effect and appropriateness of the scheme to cure the math. disliking disposition which is the cause of underachievement in learning. We choose 3 middle schools as the subject of experiment for this research. Each experiment class consists of 27∼30 students(underachievers) whose final test results of 1st school year in the middle school are 30∼60 points. In this case, we also select some middle level students whose test results are more than 60 points for the normal experimental condition. For this research, we developed the suitable test materials to cure the mathematics disliking disposition of underachievers. We applied those test materials to the experiment schools during 2.5 months and we analysed the variation of disliking disposition, the variation of math. dislike students' number and the cure rate of the math. disliking disposition. From the results of this experimental study, we find that the factors of teacher and math recognition environment have only the significant difference of math. disliking disposition between experiment class and comparison class under the 5% significance level in one middle school. We understand that this results caused by teachers' careful advice and guidance in that middle school. We also find that the number of student who dislike mathematics decreased in two middle schools. Furthermore 50% of math. disliking dispositions are cured for 9 disliking factors in the lower grade group(the group of underachievers) and as a whole, we can see that 50% of cure rate for the 7 factors of math. disliking in two middle schools. So we can understand that the experiment of our research was performed successfully in two middle schools. In this research, we find out that the scheme to cure the disliking dispositions for the factors of math. disliking depends on the factors of teacher who take charge of cure. So teachers must take interest in and must have careful concern to students and their math. disliking.