• 컴퓨터교육학회논문지
• /
• 제15권2호
• /
• pp.1-8
• /
• 2012

프로그래밍 교육은 문제를 가장 효율적으로 해결하기 위한 알고리즘을 찾아 구현하는 것이 일반적인 형태이다. 즉, 수렴적 사고 위주의 교육을 중시한다. 하지만 프로그래밍 교육은 그 대상에 따라 교육의 성격을 달리 해야 한다. 초등학교 학생들의 경우 효율성을 추구하는 것 보다 경험 중심의 다양한 탐색 환경이 선행되어야 한다. 이를 통하여 가장 효율적인 문제해결 방안을 스스로 찾아가는 방법을 배워 나가야 할 것이다. 본 연구에서는 수렴적 사고의 비중이 큰 프로그래밍 교육을 초등학교 학습자 대상에 맞도록 확산적 사고와 수렴적 사고가 동시에 반복될 수 있는 확산적 사고전략을 도입하여 그 효과를 분석하였다. 연구는 초등학교 5학년 학생들에게 적용되었으며, 일반적인 프로그래밍 수업을 실시한 통제집단과 CPS모형의 확산적 사고 전략을 포함한 프로그래밍 수업을 실시한 실험집단으로 구분하여 12차시의 실험처치 수업을 실시하였다. 그 결과 창의적 문제해결력의 하위요소 중 자기확신 및 독립성, 확산적 사고에 있어 CPS모형이 유의한 효과가 있는 것으로 나타났다.

• 항공우주정책ㆍ법학회지
• /
• 제6권
• /
• pp.267-283
• /
• 1994

Application of space technology in the field of communication and remote sensing becomes increasingly important in human life. Advancement of communications means shinks the size of our globe and that of remote sensing techniques improves the quality of human well-being. It is a world trent for each country to make its best effort in advancing its capabilities in these fields sometimes independently and other times jointly with other nations. Korea being no exception to this world trend is planning various starategies in application and development of space technologies. However, unfortunately, Korea is a new commer in this field. Statellite Technology Research Center (SaTReC) of Korea Advanced Institute of Science and Technology (KAIST) initiated to aquire satellite technology by sending its graduates abroad in 1989. As a result KITSAT-1 was launched in 1992 and KITSAT- 2 was launched in 1993 and they became Korea's first two satellites in orbits. Academic program including On-the Job-Training for Korean students at the University of Surrey, UK, is also an innovative scheme of mixing education and practical know-how for successful technology transfer, which resulted in a small but very capable and effective satellite experts group in Korea for self-propelled research and development in space activities. In this context, space development strategy should be considered in terms of the following factors; (1). Participation in international space activities as an active member to utilize international organization and to contribute to the peaceful use of space, (2). Development of national defence structure for independent activities in space, (3). Enhancement of manpower utilization for space development and promotion of national pride and (4). Education of youngsters for the extension of intellectual activities into the limitless space. In order to make very costly space development project most efficient, governmental level space development organization directed by the head of nation should be established and should manage all space development programs making full use of its all available resources including the advantage of the university based R&D capability.

• 지식경영연구
• /
• 제21권4호
• /
• pp.265-285
• /
• 2020

인바운드(Inbound) 관광시장은 오늘날 관광산업의 핵심 분야로 인식되고 있으나 각국의 다양한 경제, 사회, 문화적 변수 등에 의해 변동성이 크게 나타난다. 변동성의 원인은 인바운드 국가에 따라 다양하게 나타나며 변동성을 최소화하여 안정화된 관광산업의 활성화를 도모하고자 한다. 본 연구에서는 포트폴리오 이론을 적용하여 최소화된 위험수준에서 최대의 증가율을 거둘 수 있는 최적의 국가별 조합을 도출하였으며 주요 방한 인바운드 국가를 대상으로 입국객 수와 인당 평균 소비지출액을 적용하여 양적지표와 질적지표를 모두 고려하였다. 분석결과 입국객 수 기준으로 최적의 국가별 조합은 영국, 미국, 독일, 중국, 일본 순으로 구성되었으며, 인당 평균지출액 기준으로 최적의 국가별 조합은 태국, 중동, 싱가폴, 일본, 러시아, 홍콩, 독일 순으로 구성되었다. 이러한 결과는 한국 인바운드 관광시장을 전략적으로 운영할 수 있는 방안을 수립하는데 기여할 수 있을 것으로 기대한다.

• International Journal of Contents
• /
• 제7권4호
• /
• pp.10-18
• /
• 2011

Cooperative Group Games (CGG) emphasize participation, challenges and fun by cooperation among group members rather than competition. CGGs have been proven to be an efficient education method that teaches the value of cultivating cooperation skills, discipline, and sense of public order for tackling problems together through various types of interactions. When integrated with computer game technology, the general classic CGG can be reborn with new educational and entertaining aspects. To combine the joy of physical movement of group games and the richness of computer game contents, a motion based arcade CGG has been developed in this study, based on the original ideas and structures of classic off-line CGGs. While implementing the classic game concepts in arcade environment, various design attributes have been considered and applied, which were supposed to promote cooperative game play. Overall, the process of the implementation and test results of our four CGGs suggest several design strategies for effective arcade CGGs.

• 가정과삶의질연구
• /
• 제5권2호
• /
• pp.163-176
• /
• 1987

This paper was designated to review consumer complaining in the context of consumerism . For the purpose of this study, the literature in the consumer satisfaction/ dissatisfaction, complaining and noncomplaining behavior was reviewed. A conceptual approach to understanding why consumers complain or not when the dissatisfied was presented. It was suggested that regardless of how dissatisfied a consumer is , an action is taken or forgone only after the costs and benefits of the various alternative are considered and an assessment of the probabilities of success are made. It was suggested that aroused citizens through consumer education, government agency's effort to reduce the consumer's dissatisfaction and seller's marketing strategy in the view of consumerism are three main propositions for the enhancement of the consumer's quality of life in this study. Consumer complaining must be made in virtue of national economic systems( standard of living and the effectiveness of its marketing system, extent of government control and provision of consumer assistances) to achieve high levels of efficiency. Besides national economic systems. the third parties must be promoted for the efficient consumer complaining.

• 분석과학
• /
• 제6권3호
• /
• pp.267-274
• /
• 1993

두 가지 파라미터를 이용한 반복 회귀 최적화법을 미셀 액체 크로마토그래피에서 아미노산과 팹티드류의 분리에 적용하였다. 실험에 사용한 파라미터들은 계면활성제(surfactant)인 SDS와 2-propanol의 농도이다. 이 최적화 방법은 작은 횟수의 초기 실험 수행으로 효과적인 최적화점을 얻을 수 있었다.

• Bulletin of the Korean Chemical Society
• /
• 제33권12호
• /
• pp.4103-4108
• /
• 2012

Efficient double click methods for the synthesis of diblock codendrimers were developed. The synthetic strategy involved the sequential click reactions between an alkyne and an azide. The short core building block, 1,4-diazidobutane, was chosen to serve as the azide functionalities for dendrimer growth via click reactions with the alkyne-functionalized PAMAM dendrons as hydrophilic dendron and alkyne-functionalized Fr$\acute{e}$chet-type dendrons as hydrophobic dendron. The structure of diblock codendrimers was confirmed by $^1H$ and $^{13}C$ NMR spectroscopy, IR spectroscopy, mass spectrometry, and GPC analysis.

• Advances in aircraft and spacecraft science
• /
• 제10권5호
• /
• pp.393-418
• /
• 2023

Drones are increasingly used in logistics delivery due to their low cost, high-speed and straight-line flight. Considering the small cargo capacity, limited endurance and other factors, this paper optimized the pickup and delivery vehicle routing problem with time windows in the mode of "truck+drone". A mixed integer programming model with the objective of minimizing transportation cost was proposed and an improved adaptive large neighborhood search algorithm is designed to solve the problem. In this algorithm, the performance of the algorithm is improved by designing various efficient destroy operators and repair operators based on the characteristics of the model and introducing a simulated annealing strategy to avoid falling into local optimum solutions. The effectiveness of the model and the algorithm is verified through the numerical experiments, and the impact of the "truck+drone" on the route cost is analyzed, the result of this study provides a decision basis for the route planning of "truck+drone" mode delivery.

• Journal of Community Nutrition
• /
• 제8권2호
• /
• pp.76-89
• /
• 2006

By improving body composition, such as fat, lean body mass and total body weight, an exercise program can be an effective treatment of obesity. The effects of exercise on obesity have been confirmed via various approaches such as type, intensity, duration, frequency, and combination with diet. Combined exercise and diet is the most efficient strategy for weight loss, and exercise alone could improve metabolism irrespective of weight loss. In addition, physical activity, including exercise, is emphasized to avoid a 'yo-yo' phenomenon. Exercise increases lipolysis stimulated by such factors as catecholamine, growth hormone (GH), and hormone sensitive lipase (HSL). Moreover, changes in insulin and cortisol through exercise affect adipose tissue, which is known as not only an energy storage locale, but also as an endocrine organ. Adipocytokines secreted by adipose tissue respond to signals that modulate metabolism and inflammation. Exercise has generally shown positive effects on adipocytokines, and these effects increase in conjunction with a hypocaloric diet. However, a long duration and a high intensity of exercise could induce an inflammatory response. This review summarizes the effects of exercise on obesity treatment, which contributes to the exercise and nutritional fields, particularly of community nutritionists. (J Community Nutrition 8(2): 76-89, 2006)

• 음성과학
• /
• 제14권3호
• /
• pp.21-29
• /
• 2007

The necessity for improving the English listening ability of Korean learners has been emphasized since the ultimate goal of English education converted to CLT(Communicative Language Teaching) in Korea. Verbotonal Approach as an auditory-based strategy has been proved to be effective substantially in maximizing the listening skill of spoken foreign language. The purpose of this study is to find out an efficient way of improving listening ability for Korean middle school students by employing OFH(Optimal Frequency of Hearing) using Tonality Word Sentence Test, before & after using Listen II Verbotonal training unit based on VTS(Verbotonal System). The results of the listening tests showed that the listening ability of the subjects increased by 16.7% on the words and by 5.5% on the sentences after using Listen II, compared with before using Listen II and that the improvement rate of listening ability on the level of words is much higher than that on the level of sentences. From the results, we can come to a conclusion that training the listening skill with words in mid-tonality and low-tonality based on OFH might give a great positive effect in improving listening ability for Korean learners of English.