• 융합보안논문지
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• 제18권2호
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• pp.41-47
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• 2018

클라우제비츠의 삼위일체론은 전쟁이론가들의 전쟁사와 전략 분석이론으로 자주 사용된다. 사이버공간 전쟁에 관한 현재까지의 연구는 법률, 정책, 조직구성, 인력 및 훈련 방법 등 사이버공간 전쟁의 대비 위주로 연구가 이루어졌다고 할 수 있다. 상대적으로 사이버공간 전쟁의 특성을 이해하고 재래식 전쟁과 어떻게 다르며, 어떻게 분석해야 하는가에 관한 연구가 부족한 실정이다. 본 연구에서는 클라우제비츠의 삼위일체론 관점에서 전쟁의 본질을 지성(Intellect) 용기(Bravery) 격정(Passion) 영역 중심으로 분석하여 공간적 시간적 제약 조건 아래에서 사이버공간의 속성과 특징에 맞도록 보완하여 사이버공간 전쟁 해석모델을 설계하였다. 또한, 해석모델을 과거 이라크전 사례에 적용하여 사이버전이 전쟁 승리에 긍정적인 영향을 주었음을 이론적으로 제시한다.

• Journal of Information Science Theory and Practice
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• 제9권3호
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• pp.31-41
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• 2021

The growing number of threats to society through the uncontrolled distribution of information is forcing library communities in many countries to reconsider their views on free access to collections. Based on the content of numerous documents of international importance, it can be concluded that in any democratic country access to information is one of the most important human rights, along with the right to life, liberty, and security of person. However, the state has the right to restrict citizens' access to information within the framework of existing legislation. Constantly, restrictions on access to information are established in order to protect the ethical foundations of the constitutional order, morality, health, rights, and legitimate interests of others, to ensure the country's defense and state security. It goes without saying that each country has the right to independently decide where the boundaries lie between permitted and prohibited information, including printed information, contained in library collections. This article describes three levels of access restriction: foreign, state, and regional. The authors have analyzed the legal and regulatory documents that govern libraries, as well as the reasons and methods of limitation. A comparative analysis of the restriction of access to information in the countries of Europe and Asia is presented.

• 무역학회지
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• 제44권2호
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• pp.203-219
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• 2019

Recently, the Trump administration initiated a new United States-Mexico-Canada Agreement (USMCA) that strengthened NAFTA's rules of origin to enhance protectionism while maintaining the framework of trade agreements rather than completely abolishing them. This study focuses on the behavior of firms motivated to influence the government to practice protectionist trade by analyzing the rules of origin verification and adopting the political economics model. This paper explains the process of endogenous determination of the stringency of rules of origin verification as a non-tariff barrier using the lobbying model. Comparative static analysis shows that the more efficient technology a domestic firm has and the more government prefers to raise political contribution, the more is verification likely to be strict. This suggests that a rationale exists to maintain a free trade agreement in the form of the new agreement (USMCA) without abolishing the current NAFTA regime.

• 한국안전학회지
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• 제36권2호
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• pp.68-79
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• 2021

Department of Defense, Republic of Korea has put in significant efforts towards safety over the years by developing defense safety management systems, such as establishing safety management organizations and enacting laws and regulations. Therefore, the number of casualties due to military activities has been reduced dramatically. However, many errors and problems are present in the safety management system (SMS) owing to a lack of proper SMS. That brings inefficiency and discontinuity in SMS. Hence, typical phenomena such as lack of safety management professionals and reactive safety management activities have not been properly corrected. This study reviews various academic papers on the SMS and research reports of major foreign institutions to redefine the concept and components of the defense safety management system to ultimately suggest improvement in the R.O.K defense safety management system. Additionally, the safety management system of the U.S. and British forces, considered to be the leading safety management system, were analyzed and compared to R.O.K defense SMS to derive their implications.

• 항공우주시스템공학회지
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• 제15권1호
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• pp.1-6
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• 2021

미국은 우주분야에서 최고의 기술력, 인력, 자금을 확보하고 있는 국가이며, 우주의 영역을 단순한 과학기술 뿐 아니라, 산업, 국가안보와 깊이 연결시키고 있다. 반면 우리나라의 경우 우주정책이 위성, 발사체 등 우주시스템의 개발 위주로 되어 있다. 양국간의 우주정책 체계도 상이하다. 이로 인해 미국과의 우주협력을 얘기하는데 상호이해의 차이가 발생한다. 본 연구는 미국의 우주정책 체계를 소개하고 양국의 우주정책 체계를 비교함으로써, 미국과의 협력에 있어 효과적인 방안을 찾는데 목적이 있다.

• 한국보육지원학회지
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• 제19권4호
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• pp.29-52
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• 2023

Objective: This research aims to examine the effect of a young children's engineering-focused STEAM program based on the project approach - a program that constructs components aligned with children's interests in their play through an engineering design process - on their scientific inquiry ability, mathematical problem-solving ability, and creativity. Methods: In this research, 42 five-year-old children from a public kindergarten in S district, I city, were randomly divided into experimental and comparative groups, each with 21 children. The engineering-focused STEAM program was conducted from April 18 to June 10, 2022, with the experimental group exploring the 'car' theme and the comparison group focusing on a different theme. The study employed an independent sample t-test and analysis of covariance(ANCOVA), using the pretest as a covariate to control variables. Results: The children-selected 'cars' themed engineering-focused STEAM program was effective in enhancing their scientific inquiry ability, mathematical problem-solving ability and creativity. Conclusion/Implications: The engineering-focused STEAM program, which emerges from young children's interesting daily play, had positive effects on enhancing their scientific inquiry ability, mathematical problem-solving ability, and creativity. This research can serve as fundamental data for developing education programs focused on engineering within the STEAM framework, guided by children's emergent play.

• Geomechanics and Engineering
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• 제33권4호
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• pp.381-391
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• 2023

The aim of this work is to analyze and predict the wave propagation behavior of the carbon nanotube reinforced composites (CNTRC) beams within the framework of various higher order shear deformation beam theory. Using the Euler-Lagrange principle, the wave equations for CNTRC beams are derived, where the determining factor is to make the determinant equal to zero. Based on the eigenvalue method, the relationship between wave number and circular frequency is obtained. Furthermore, the phase and group velocities during wave propagation are obtained as a function of wave number, and the material properties of CNTRC beams are estimated by the mixture rule. In this paper, various higher order shear beam theory including Euler beam theory, Timoshenko beam theory and other beam theories are mainly adopted to analyze the wave propagation problem of the CNTRC beams, and by this way, we conduct a comparative analysis to verify the correctness of this paper. The mathematical model provided in this paper is verified numerically by comparing it with some existing results. We further investigate the effects of different enhancement modes of CNTs, volume fraction of CNTs, spring factor and other aspects on the wave propagation behaviors of the CNTRC beams.

• 한국건설관리학회논문집
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• 제23권1호
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• pp.3-15
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• 2022

어린이집은 아이들의 심신 및 사회성 발달 등이 이루어지는 중요한 공간이다. 따라서 어린이집 각 공간은 사용자인 아이뿐 아니라 교사의 특성을 고려하여 맞춤형 설계 및 시공이 이루어져야 한다. 그러나 불충분한 관련 법규 및 획일화된 설계 시공 과정은 어린이집 각 공간의 특성을 살리지 못하고 있는 실정이다. 이는 최종사용자(원장, 교사) 및 건설 전문가(설계 및 시공자) 사이의 각 공간별 중요도-성과도 인식차이에서 발생한다. 이에 본 연구에서는 각 공간 및 집단 간 인식차이 요인 분석을 위한 프레임워크를 개발하고 전통 및 수정 IPA를 통해 어린이집 건설 시 우선 고려되어야 할 요인들을 도출하였다. 이를 토대로 두 집단의 인식을 비교하고, 분석방법에 다른 결과를 비교함으로, 향후 어린이집 발주 시 활용 가능하며 시공 및 운영 과정에서 각자의 공간에 대한 인식을 파악하여 갈등 발생 최소화에 도움이 될 것이다. 또한, 각 IPA 방법에 따라 전통 IPA가 사전의 인식을 보는데 수월하다면, 수정 IPA는 성과물의 만족도를 기준으로 중요도를 파악함으로 결과물에 대한 판단이 가능할 것으로 여겨진다. 따라서 IPA의 특성에 따라서 결과를 비교한다면, 어린이집 건설 전후 상황에 따른 사용자와 건설 전문가 집단의 인식차이 분석이 가능할 것이다.

• 한국안전학회지
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• 제35권2호
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• pp.100-110
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• 2020

Recently, the frequency of typhoon and torrential rain due to climate change is increasing. In addition, the upsurge in the complexity of urban sewer network and impervious surfaces area aggravates the inland flooding damage. In response to these worsening situations, the central and local governments are conducting R&D tasks related to predict and mitigate the flood risk. Researches on the analysis of inundation in urban areas have been implemented through various ways, and the common features were to evaluate the accuracy and justification of the model by comparing the model results with the actual inundation data. However, the evaluation procesure using available urban flooding data are not consistent, and if there are no quantitative urban inundation data, verification has to be performed by using press releases, public complaints, or photos of inundation occurring through 'CCTV'. Because theses materials are not quantitative, there is a problem of low reliability. Therefore, this study intends to develop a comparative analysis procedure on the quantitative degree and applicability of the verifiable inundation data, and a systematic framework for the performance assessment of urban flood analysis model was proposed. This would contribute to the standardization of the evaluation and verification procedure for urban flooding modelling.

• Asian Pacific Journal of Cancer Prevention
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• 제17권3호
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• pp.1405-1410
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• 2016

Background: The European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire Bone Metastases Module (EORTC QLQ-BM22) is a recently designed supplement to EORTC Quality of Life Questionnaire-C30 (EORTC QLQ-C30). Additional psychometric properties, especially using confirmatory factor analysis (CFA) and the Rasch model, are warranted. Materials and Methods: A total of 573 patients with bone metastases were enrolled from eight countries with a mean${\pm}$SD age of $55.8{\pm}13.7years$. Slightly more than two thirds of them were female (n=383; 66.8%). CFA was used to examine the BM22 framework; Rasch models were applied to understand misfit items and differential item functioning (DIF). Results: The fit indices were satisfactory in CFA (comparative fit index=0.972, Tucker-Lewis index=0.964, root mean square error of approximation=0.076, and standardized root mean square residual=0.045). All items fit well in the Rasch models (mean square values were between 0.5 and 1.5), and only one item (number 17) displayed DIF across gender. However, there were six DIF items across Canada and Taiwan, ten across Canada and Iran, and six across Taiwan and Iran. Conclusions: The BM22 has satisfactory psychometric properties, and could assess the QoL of patients with bone metastases specifically focusing on their symptoms. Clinicians may want to use it to capture the underlying QoL for patients with bone metastases. However, the score of item 17 should be interpreted with caution when comparing male and female patients. In addition, researchers should note that variation in DIF items may occur when conducting an international study.