• 한국초등과학교육학회지:초등과학교육
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• 제33권2호
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• pp.352-363
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• 2014

The purpose of this study was to develop a proper teaching strategy to raise students' interests and creative problem-solving ability in science. And the result of applying this developed teaching strategy to elementary science lesson were compared with that of traditional science lesson. For comparison, two classes of $5^{th}$ grade in S elementary school in B city were selected. After pre-test, one class, experimental group, took a science lesson applying developed teaching strategy and other class, comparative group, took a traditional science lesson. After respective lesson, two classes did post test. The results of this study can be summarized as follows. First, IAAI(Interest-Activities-Attainment-Initiation) teaching strategy was developed. IAAI teaching strategy was composed of 4 stages which were (1)interest in science, (2)science experiment activities, (3)attainment to science knowledge, (4)initiation of creative thinking and 4 stages were progressed in serial order in science lesson. Second, after lessons, the experimental group achieved higher mark in the test of science academic achievement than the comparative group and it was statistically meaningful difference. Third, after lessons, the experimental group was more improved in science-related attitudes than the comparative group and it was statistically meaningful difference. Fourth, after the lesson, the experimental group was more improved than the comparative group in the creativity test and the difference was statistically meaningful.

• 한국항해항만학회지
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• 제40권3호
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• pp.129-138
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• 2016

해상운송 서비스의 특수한 환경적 특성으로 인해 해운기업은 불확실한 경영환경에 노출되기 쉬우며, 환경 불확실성에 대응할 수 있는 적절한 경쟁전략을 활용하여 기업의 경영성과를 달성하는 것은 중요하다. 따라서 본 연구는 해운기업에서 높은 경영성과 달성을 위해 환경 불확실성에 따라 어떠한 전략을 취할 것인지를 분석하는데 목적이 있다. Porter의 본원적 경쟁전략인 원가우위전략과 차별화전략을 바탕으로 하여 우리나라 외항해운기업을 대상으로 환경 불확실성과 기업의 추구하는 경쟁전략의 관련성을 분석하고, 경쟁전략의 활용정도가 경영성과에 미치는 영향력에 대해 검증하였다. 연구목적 달성을 위해 선행연구와 전문가 개별 인터뷰를 통하여 측정항목을 설정하였고, 설문을 통하여 실증분석을 수행하였으며, 가설 검증에는 OLS회귀분석과 Tobit모형분석을 이용하였다. 본 연구 결과 첫째, 환경 불확실성의 요인 중 변동성은 원가우위전략과 차별화전략의 활용에 영향을 미치고, 다양성은 차별화전략에 유의한 영향력이 있음을 도출하였다. 둘째, 기업의 경영성과는 원가우위전략의 활용을 통해서 달성할 수 있으므로, 해운 서비스를 제공하는데 비용절감의 노력이 요구된다.

• 융합보안논문지
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• 제16권4호
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• pp.53-61
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• 2016

많은 국가들은 사이버위협으로 인한 피해를 사전에 예방하고, 사고 발생 시 그 피해를 최소화하기 위해 국가차원의 사이버보안 전략을 수립하여 이행하고 있다. 그러나 국가 사이버보안 전략은 해당 국가가 처한 환경과 필요에 따라 그 수준과 범위에 있어 상당한 편차를 보이고 있다. 어느 한 곳의 취약점은 전 세계적인 문제로 이어질 수 있다는 점에서 국가 사이버보안 전략 수립을 지원하고 개선하기 위해 국제기구를 비롯한 관련 기구, 기관에서 다양한 지침서가 개발되었다. 본 논문에서는 국가 사이버보안 전략 수립을 위해 발표된 각종 지침서를 분석하고, 주요 공통요소를 도출한 참조 모델을 제시하였다. 아울러 이를 우리나라 정책과 비교하여 미흡한 부분에 대한 보완대책을 제안하였다.

• 산경연구논집
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• 제11권6호
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• pp.19-28
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• 2020

Purpose: Current study aimed at exploring the effects of ambient anger versus sadness on motive type and coping strategy type when consumers make decision. It focused on whether the negative affects of the anger and the sadness differentially induce approach versus avoidance motive at the place of making decision, and also explored the coping strategy differences between the consumers under the anger and those under the sadness, that is, which strategy is more used between problem-focused strategy and affect-focused strategy when they are under each negative affect. Research design, data and methodology: The experimental groups were divided into two types of group such as the anger-felt group and the sadness-felt group. The experiment was performed with the between-subjects design based on the anger and the sadness. Questionnaire data were collected from undergraduate students assigned to each of the anger group and the sadness group operated by the scenario method, and the data were used to verify research hypotheses by t-test. Results: - First, the anger induced the approach motive more rather than the avoidance motive in making decision. Second, to cope the negative affects, consumers under the anger used problem-focused strategy more than affect-focused strategy, while those under the sadness used affect-focused strategy more than problem-focused strategy. Therefore, this article contributes to the theory related to motive and making decision taken place to consumers under ambient negative emotions. Conclusions: Focusing on the results of this study, there could be managerial implications to brand or product marketing managers. Checking which affect consumers previously felt between anger and sadness when they are under negative affects is at issue to the brand or product marketers when they appeal their brand or product to the consumers. The marketers should build and communicate the messages about their product or brand in the respect of the points of showing problem solution or the best way to handle things to appeal the consumers under the anger. And they should develop and communicate the messages about their product or brand emphasizing the aspects of letting consumers' sad feelings out somehow or controlling their emotions to the consumers under sadness.

• 대한지리학회지
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• 제41권1호
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• pp.39-57
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• 2006

장소마케팅 전략은 도시문화의 발전이냐 혹은 파괴냐를 둘러싼 다양한 의미와 담론 및 실천들이 끊임없이 생성되고, 서로 부딪히며, 교섭하는 문화정치의 장이 될 수 있다. 따라서 장소마케팅 전략이 지니는 문화적 함의에 대한 명확한 이론적 이해가 필요하다. 그런 의미에서 이 논문은 장소마케팅 전략이 도시문화발전 전략으로서 자리매김하는데 필요한 개념과 방법론을 제시하고자 한다. 먼저 공간의 문화정치학과 장소마케팅에 대한 문화정치적 관점을 살펴보았다. 다음으로 도시문화발전 전략으로서 장소마케팅의 문화적 의의를 도출하고, 장소마케팅 전략의 개념과 특성을 문화적인 관점에서 재구성하였다. 마지막으로 장소마케팅 전략 수립의 과정을 장소 전략과 마케팅 전략의 차원에서 정립하고, 마케팅믹스 요소(O_IPTCR)와 문화정치적 요소(SAUNE 요소)를 도출하여 장소마케팅 전략 수립의 방법론을 체계화하였다.

• 임상간호연구
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• 제18권3호
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• pp.402-412
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• 2012

Purpose: The purpose of this study was to explore influencing factors of dysfunctional beliefs and emotion regulation strategy for nurses' problem solving ability. Methods: This study was a cross-sectional design with a sample of 745 nurses from 1 university hospital located in Gyeonggido. The scales were Dysfunctional Beliefs Test (70 items), Emotion Regulation Strategy Questionnaire (25 items) and Social Problem Solving Inventory (52 items). The data were analyzed using SPSS 17.0 employing ANOVA, pearson correlation coefficients and multiple regression analysis. Results: The mean score for problem solving ability was 11.26 points. Influencing factors for nurses' problem solving ability were identified as 'active regulation style' in emotion regulation strategy and 'negative concept of social self' in dysfunctional beliefs. Conclusion: It is plausible to assume that dysfunctional beliefs which are vulnerability factors in cognitive variables and emotion regulation strategy affect nurses' problem solving ability.

• 한국초등과학교육학회지:초등과학교육
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• 제33권1호
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• pp.105-114
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• 2014

The purpose of this study was to develop a teaching strategy focused on problem solving process and explore its effects on science creative problem solving ability, science process skills, science academic achievements and scientific attitudes of students after applying it. Teaching strategy focused on problem solving process employed brainstorming and PMI thinking strategies. The participants were the third grade students of both an experimental class(26 students) and a comparative class(25 students) at the S elementary school located in Goyang-City, Kyonggi Province. The developed strategy was applied to the experimental class for 9 periods of 'Separation of mixture' unit. The results of the tests on the science creative problem solving ability, the science process skills, scientific achievement and scientific attitude were statistically higher in the experimental class.

• 산업기술연구
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• 제21권A호
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• pp.51-57
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• 2001

In this paper, a novel overmodulation strategy for space-rector PWM(SYPWM) inverters to utilize dc link voltage fully is presented. The proposed strategy uses the concept of SVPWM based on the zero sequence signal(offset voltage) injection principle. So, by modifying the pole voltage simply, the linear control of inverter output voltage over the whole overmodulation range can be achieved easily. The proposed strategy is so simple that its practical implementation is easy. The validity of the proposed strategy is confirmed by the experimental results.

• International Journal of Precision Engineering and Manufacturing
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• 제6권2호
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• pp.61-71
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• 2005

The study reported deals with investigating the feasibility of control strategy for a serial rigid link manipulator that applies impulsive torques at the joints. The strategy is illustrated for a planar three rigid link manipulator. An impulse-based concept which uses successive torque impulses on rigid link as the controller for motion correction was introduced. This control strategy was tested over the entire trajectory to demonstrate that the tracking error could be reduced effectively. The best condition for minimizing the tracking error with the least impulse input at each joint is investigated by considering one design and one operating parameter. The first was the damping in the system, and the second was the sampling time during operation. The results show that this approach can provide useful guidance for the design and control of robot manipulators that require minimum impulse feedback for accurate tracking.

• 제어로봇시스템학회논문지
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• 제18권3호
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• pp.258-266
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• 2012

This paper describes a biped walking algorithm for a hydraulic humanoid robot on inclined floors. To realize stable and robust biped walking, the walking algorithm was divided into five control strategies. The first is a joint position control strategy. This strategy is for tracking desired joint position trajectories with a gain switching. The second is a multi-model based ZMP (Zero Moment Point) control strategy for dynamic balance. The third is a walking pattern flow control strategy for smooth transition from step to step. The fourth is an ankle compliance control, which increases the dynamic stability at the moment of floor contact. The last is an upright pose control strategy for robust walking on an inclined floor. All strategies are based on simple pendulum models and include practical sensory feedback in order to implement the strategies on a physical robot. Finally, the performance of the control strategies are evaluated and verified through dynamic simulations of a hydraulic humanoid on level and inclined floors.