• 한국지구과학회지
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• 제23권2호
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• pp.154-165
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• 2002

The purpose of this study was to examine the effects of metastrategic exercise on a scientific reasoning strategy to control variables, and investigate the developmental patterns in the strategy usage within a given period. Two groups composed of 90 fifth grade students engaged in a scientific reasoning task over six daily sessions. Additionally, one group engaged in metastrategic exercise on fictional students' strategies of controlling variables on the task, while the other spent equivalent time on an unrelated task. Based upon results of the study, the following conclusions can be drawn. First, the metacognitive exercise on the strategy to control variables has positive and long-standing effects on the strategy performance at the reasoning task. The exercise also takes effect of near-transfer. Taking into consideration only about sixty minutes of metastrategic practice, the results provide the validity of the activity in order to develop children's reasoning strategies. Second, in a scientific reasoning task, each child seems to go through one out of two developmental patterns in their usage of reasoning strategies: gradual change or fundamental change. Considering the ratio of pattern of fundamental change between the two groups, it is clear that the metacognitive exercise influences the developmental pattern of strategy usage.

• 대한지구과학교육학회지
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• 제3권2호
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• pp.118-123
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• 2010

This study is aiming to structure progressive instructional strategy for development of constructivist-thinking into the beginning stage, developmental stage, and advanced stage, then organize multiple choice, completion, descriptive, and essay problems to be suitable for each stage of the strategy, and finally, to evaluate what effects this instructional strategy has on the students' academic achievements and enhancement of their scientific essay writing skills. The results of the study are as follows. First, lessons applying the strategy for developing constructivist-thinking were more effective in enhancing student' academic achievement than the text book-oriented lecture type lessons. In changes in academic achievement, the test group, for both high and low levels, displayed a higher average than the control group, however, changes in the high level was not statistically significant and changes in the low level students were found to be statistically significant. Second, scientific essay writing skills were found to be effective in all levels of the test group and the averages in both high and low groups of the test group were higher than those of the control group and were also found to be statistically significant.

• 기록학연구
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• 제42호
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• pp.185-211
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• 2014

이 글의 목적은 사회의 대사건이나 주요 공공 정책에 관한 기록화를 위해 작동되는 보존기록 시스템에 관한 논의이다. 필자는 세 가지를 제안하였다. 첫째는 기록이 만들어지는 같은 시대에 보존기록을 선별하는 기록화 전략의 개발이다. 여기에는 기록에 포함된 모습이 중요하며 여기에 가급적 넓은 사회적 맥락이 반영되어야 한다는 것으로, 필자는 이는 보존기록의 가치에 관한 사고의 전환에서 비롯된 것으로 보았다. 둘째는 그러한 전략에 해당하는 보존기록을 획득하기 위한 도구의 개발이다. 기록화 전략은 전략에 맞는 기록을 획득하는 별도의 방법을 필요로 한다는 것이 필자의 주장이다. 셋째는 이러한 기록화 전략과 기록 획득수단의 지속가능성이다. 이와 관련하여 필자는 현행 한국의 국가 아카이브 체제의 문제에 관해 논의하였다.

• 아태비즈니스연구
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• 제12권2호
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• pp.61-79
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• 2021

Purpose - The purpose of this study was to analyze the impact of a company's competitive strategy on corporate performance in the highly competitive Chinese automotive industry. Design/methodology/approach - This study collected 14 survey data from automotive companies in China which be listed more than one year. We chosen the exploratory study with deriving research assignments, and the final research results are presented as propositions to proceed with the study. Findings - First, in the Chinese automobile industry, a company's competition strategy has a positive impact on corporate performance. and also the Differentiation strategy and the Low-cost strategy both have a positive impact on corporate performance. In addition, a company pursuing the Differentiation strategy that it would achieve better corporate performance than a company pursuing the Low-cost strategy. Second, it has been shown that the hybrid strategy rather than the pure strategy in the Chinese automobile industry can achieve higher corporate performance. Research implications or Originality - First, the type of competitive strategy in Chinese automotive industry were identified through the original strategies presented by Porter and Murray, and the impact of the Low-cost and the Differentiation strategies on corporate performance was analyzed. Second, contributing to the study of pure and hybrid strategies that are still under discussion now. Third, it also suggested practical implications that companies in China's automotive industry should pursue cost or differentiation advantages to secure competitive advantage.

• 한국자동차공학회논문집
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• 제20권4호
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• pp.103-108
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• 2012

Fuel economy is an important factor in a vehicle owing to recent energy supply and environmental problems. This paper deals with fuel cell hybrid vehicles (FCHVs) and introduces a fuel economy evaluation method. The fuel economy of an FCHV depends on its power management strategy. Two rule-based power management strategies are applied to this paper and their fuel economy is evaluated based on the optimal control theory. The concept of the optimal line is also applied to this paper, which is used to compare the fuel consumption of a power management strategy to the optimal result. The two rule-based strategies are also compared to each other.

• Strategy21
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• 통권45호
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• pp.5-32
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• 2019

본 논문을 통해, 필자는 국제정치학 패러다임을 통해 인도태평양전략이 갖는 의미를 살펴보고, 그 전략적 함의를 생각해보았다. 핵심 관찰사항으로, 첫째 미(美) 인도태평양전략은 미국의 국가정체성에 대한 선언이라는 것이다. 즉 미국이 인도-태평양 국가이고, 현존하는 국제질서를 만든 국가라는 것을 명확히 하면서, 앞으로도 그럴 것이라는 강력한 국가의 의지를 밝히고 있다. 특히, 필자는 인태전략이 자유롭고, 열린 인도-태평양을 지지하는 국가들 간의 집합적인 정체성, 즉 인도-태평양 커뮤니티의 형성을 추도하는 미국의 노력으로 볼 수 있다고 주장한다. 둘째, 인태전략은 국제안보의 위협 세력에 대한 억제전략이 라는 것을 설명한다. 셋째, 인태전략은 미국의 전략적 우위를 유지하면서 신흥강대국인 중국을 포용하는, 즉 강대국 간 충돌을 예방하기 위한 위험감소를 위한 노력이기도 하다, 특히, 인태전략은 기준, 규범, 국제제도와 같은 구성주의 요소들과 접근법을 활용함으로써, 정당성과 국제적 지지를 유지하는 동시대, 국제질서와 국익을 보장하는 잘 구성된 전략이다. 물론, 이에 대한 제한점과 도전 요인도 따를 것이다.

• 한국지구과학회지
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• 제37권5호
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• pp.277-285
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• 2016

We introduce a depth scaling strategy to improve the accuracy of frequency-domain elastic full waveform inversion (FWI) using the new pseudo-Hessian matrix for seismic data without low-frequency components. The depth scaling strategy is based on the fact that the damping factor in the Levenberg-Marquardt method controls the energy concentration in the gradient. In other words, a large damping factor makes the Levenberg-Marquardt method similar to the steepest-descent method, by which shallow structures are mainly recovered. With a small damping factor, the Levenberg-Marquardt method becomes similar to the Gauss-Newton methods by which we can resolve deep structures as well as shallow structures. In our depth scaling strategy, a large damping factor is used in the early stage and then decreases automatically with the trend of error as the iteration goes on. With the depth scaling strategy, we can gradually move the parameter-searching region from shallow to deep parts. This flexible damping factor plays a role in retarding the model parameter update for shallow parts and mainly inverting deeper parts in the later stage of inversion. By doing so, we can improve deep parts in inversion results. The depth scaling strategy is applied to synthetic data without lowfrequency components for a modified version of the SEG/EAGE overthrust model. Numerical examples show that the flexible damping factor yields better results than the constant damping factor when reliable low-frequency components are missing.

• 품질경영학회지
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• 제48권1호
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• pp.87-105
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• 2020

Purpose: This paper aims to propose a practical strategy for smart factories and a step-by-step quality strategy according to the maturity of smart factory construction. Methods: The characteristics, compositional requirements, and diagnosis system are examined for smart factories through theoretical considerations. Several cases of implementing smart factory are studied considering the company maturity level from the aspect of the smartness concept. And specific quality techniques and innovation activities are carefully reviewed. Results: The maturity level of smart factory was classified into five phases: 1) ICT non-application, 2) basic, 3) intermediate 1, 4) intermediate 2, 5) advanced level. A five-step quality strategy was established on the basis of case studies; identify, measure, analyze, optimize, and customize. Some quality techniques are introduced for step-by-step implementation of quality strategies. Conclusion: To build a successful smart factory, it is necessary to establish a quality strategy that suits the culture and size of the company. The quality management strategy proposed in this paper is expected to contribute to the establishment of appropriate strategies for the size and purpose of the company.

• 안보군사학연구
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• 통권4호
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• pp.241-287
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• 2006

16th CPC National Party Congress established multi-polarization strategy as an external strategy, and 'The Great Reinvigoration of Chinese Nation' as the aim of The Great Strategy of China. It is required to maintain stabilized and peaceful surrounding circumstance in order to make it possible. The ideal surrounding circumstance that China is aiming for is to achieve multi-polarization of international society while maintaining strategic deterrence. Multi-polarization now in 'One super Multi powers' is that 'Multi powers' deter 'One super' to prevent predominance of USA and to decentralize the power. China wishes to realign international order as it accomplishes multi-polarization. China who wants 'Peace and Stabilization' emphasizes autonomy, peace and unification of Korean peninsula. Autonomy means the restraint intervention of foreign power, that is, American influence in Korean peninsula. Multi-polarization strategy of China will be used in Korean peninsula to solve nuclear issue of North Korea, to support neutral unification and to keep balance of power with USA, Japan and Russia as it renders economic advantages to South Korea and security engagement to North Korea, based on special geographical, cultural and historical relationship with two Koreas. The nuclear issue of North Korea will be a stage to test multi-polarization of China. When it deduces positive solution of nuclear issue due to successful six-party talks, and advances to security talks of Northeast Asia, it will contribute a lot to power and elevation of national stature of China in international society. Thus, the Chinese strategy will be an accommodative condition for the security of South Korea, and it requires wise decision of South Korea to make hay while the sun shine.

• 가족자원경영과 정책
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• 제21권2호
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• pp.73-93
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• 2017

The purpose of this study was to investigate the influences of work-family conciliation strategies on work-family conflict and enrichment in dual-earner couples who live in Daegu with children. The subjects of this study were 176 dual-earner couples, who have under 16 youngest children and work over 15 hours each week. The research tool was questionnaires. For data analysis, factor analysis, Cronbach ${\alpha}$, paired t-test and multiple regression were performed. The main results of this study were as following. First, there were significant differences in management and planning skill strategy, work-family conflict and enrichment according to gender. Second, positive attitudes strategy toward multiple responsibilities, wives use, had an influence on work${\rightarrow}$family conflict in wives. Also, partner coping, management and planning skill, and positive attitudes strategy, wives use, and management and planning skill strategy, husbands use, had an influence on family${\rightarrow}$work conflict in wives. And management and planning skill and professional adjustment strategy, husbands use, had an influence on family${\rightarrow}$work conflict in husbands. work-family conciliation strategies had no influence on work${\rightarrow}$family conflict. Third, positive attitudes strategy toward multiple responsibilities, wives use, had an influence on work${\rightarrow}$family enrichment in wives. Also, partner coping strategy, wives use, and management and planning skill strategy, husbands use, had an influence on family${\rightarrow}$work enrichment in wives. And positive attitudes strategy toward multiple responsibilities, husbands use, had an influence on work${\rightarrow}$family enrichment in husbands. Also management and planning skill strategy, wives use, and partner coping, professional adjustment and management and planning skill strategy had an influence on family${\rightarrow}$work enrichment in husbands.