• International Commerce and Information Review
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• 제2권1호
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• pp.25-48
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• 2009

With the rapid growth of e-logistics in the global logistics industry, it is important to gain further insight into this growing segment of Chinese logistics industry. The current situation in China consists of many small and medium-sized logistics firms. Furthermore, e-logistics is still relatively undeveloped in the majority of the Chinese logistics companies and presently there are still many problems unresolved. This paper attempted to review the concepts and theoretical background of e-logistics systems from previous studies. After acknowledging the essential issues related to e-logistics systems, a research model based on the theory acceptance model was designed and tested. The key factors to the e-logistics system (reliability, maintainability, software, facility and transportation) were validated through the modeling and testing process. Included in the modelling and testing process are other related factors of e-logistics process, logistics information system and added value as dependent variables in this model. The results of this study confirm that the e-logistics Process is affected by transportation, while maintainability and software factors influence logistics information system. reliability, maintainability, facility and transportation are significant factors associated with added value. This research aimed to provide theoretical and practical contribution to Chinese logistics companies and to give some insights into e-logistics system as a whole. The paper also provided some useful theoretical implication and practical guidelines for the development of e-logistics system in the chinese logistics industry.

• 지구물리와물리탐사
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• 제14권2호
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• pp.133-139
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• 2011

지구조석을 계산하는데 있어 가장 주요한 항은 달이나 태양에 의한 구면조화차수가 2인 항으로서 지구조석의 약 98%를 이루며, 나머지는 3차 이상의 고차 항들이다. 그런데 차수 3항과 그 이상의 고차수의 항들의 값들은 차수 2항과는 다른 상수가 각각 곱하여져서 계산되어야 한다. 본 연구에서는 조석에 의한 중력변화, 변위 및 수직선의 변화에 대한 바른 계산을 검토하였으며, 필요한 관련상수들을 다시 구하였다. 동일차수내의 다른 계수의 조화함수적 조석주기의존성을 토의하였다. 한편, 지구조석을 계산하는데 관련된 중요한 개념들을 요약 소개하였다.

• 통상정보연구
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• 제11권2호
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• pp.3-26
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• 2009

With the rapid growth of e-logistics in the global logistics industry, it is important to gain further insight into this growing segment of Chinese logistics industry. The current situation in China consists of many small and medium-sized logistics firms. Furthermore, e-logistics is still relatively undeveloped in the majority of the Chinese logistics companies and presently there are still many problems unresolved. This paper attempted to review the concepts and theoretical background of e-logistics systems from previous studies. After acknowledging the essential issues related to e-logistics systems, a research model based on the theory acceptance model was designed and tested. The key factors to the e-logistics system (reliability, maintainability, software, facility and transportation) were validated through the modeling and testing process. Included in the modelling and testing process are other related factors of e-logistics process, logistics information system and added value as dependent variables in this model. The results of this study confirm that the e-logistics Process is affected by transportation, while maintainability and software factors influence logistics information system. reliability, maintainability, facility and transportation are significant factors associated with added value. This research aimed to provide theoretical and practical contribution to Chinese logistics companies and to give some insights into e-logistics system as a whole. The paper also provided some useful theoretical implication and practical guidelines for the development of e-logistics system in the chinese logistics industry.

• 컴퓨터교육학회논문지
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• 제16권1호
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• pp.1-9
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• 2013

최근 계산적 사고(Computational Thinking)의 중요성에 관한 인식이 확산됨에 따라 초중등학생들을 대상으로 계산적 사고 능력 향상을 위한 교육 연구가 활발히 이루어지고 있다. 본 연구에서는 스크래치를 활용한 창의적 프로그래밍 학습을 설계하고 해당 학습 활동이 중학교 1학년 학생들의 창의성 잠재력 및 계산적 사고 능력 발달에 미치는 영향을 확인하였다. 연구 결과, 학습자들의 창의성 잠재력은 유의하게 증진되었으며, 계산적 사고 능력의 토대가 되는 프로그래밍의 기본 개념과 원리를 습득하였음을 확인하였다. 특히, 창의성 잠재력의 하위 요인 중 창의적 성격 및 아이디어 생성 행동 요인에서 유의한 향상을 보였다. 계산적 사고의 경우 프로그래밍의 기본 개념인 순차, 반복, 조건, 이벤트 처리 및 연산자에 대한 개념 이해 수준이 높게 나타났다.

• 컴퓨터교육학회논문지
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• 제10권1호
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• pp.97-105
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• 2007

본 논문에서는 디지털 신호처리 및 영상처리 분야 등에서의 기본 연산이라고 할 수 있는 컨벌루션(convolution) 연산 과정을 웹을 위한 벡터 그래픽인 SVG(scalable vector graphics)를 이용하여 시각화하였다. 그런데, 컨벌루션 연산의 개념과 연산 과정은 주로 수학적인 표현에 의존하므로 그 개념을 직관적으로 이해하기는 다소 어려운 점이 있다. 본 논문에서는 SVG를 이용하여 컨벌루션의 연산 과정을 시각화하고 그에 대한 활용 예를 제시함으로써 학습자가 컨벌루션 연산을 보다 직관적으로 이해할 수 있도록 하였다. 본 논문에서 제시한 컨벌루션 연산의 시각화를 학습자들에게 적용한 결과를 면담을 통하여 분석한 결과, 학습자들이 컨벌루션 연산을 흥미를 가지고 학습에 임할 뿐만 아니라, 직관적으로 컨벌루션 연산을 이해할 수 있는 가능성을 볼 수 있었다.

• 한국초등과학교육학회지:초등과학교육
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• 제25권1호
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• pp.51-58
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• 2006

The language and the gestures of a teacher, generally, have a great influence on the effect of a lesson. This is because subject content is transferred to students by teachers' language and gestures. In the science lessons which focus on experiments, the language and gestures of both students and teachers will help the learning of scientific content. However, the role of gestures, despite its importance, has rarely been investigated in science education research. The role of gestures of students and teachers is a much needed area of study. This study investigated the gestures observed in the experimental process performed by students who participated in a science exploration activity. Students' gestures play an essential role in the successful performance of the experiment. and they could function as a process of solving the contradictory situation. In addition, the demonstration and the communication of gestures should be performed very cautiously. There were a number of implications for the long-standing problem of the relation between the understanding of science concepts and the performance of experiments.

• Asian-Australasian Journal of Animal Sciences
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• 제13권3호
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• pp.390-400
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• 2000

The corpus luteum (CL) is a temporary endocrine gland whose main function is to secrete progesterone to support pregnancy. On the other hand, the cyclic bovine CL has also been shown to be a site of prostaglandin $F_{2{\alpha}}$ ($PGF_{2{\alpha}}$) production. Although there is general agreement that endometrial $PGF_{2{\alpha}}$ is an essential luteolysin in cattle, luteal $PGF_{2{\alpha}}$ seems to play a luteotropic role as an autocrine and/or paracrine factor, especially for the development and maintenance of the CL. This supposition is based on evidence that some of the prerequisites for autocrine/paracrine mechanisms are present, including local production of $PGF_{2{\alpha}}$ and the existence of specific binding sites within the CL. The purpose of this paper is to review the regulation of luteal $PGF_{2{\alpha}}$ secretion, its action on CL as an autocrine and/or paracrine factor and the receptivity of bovine CL to. $PGF_{2{\alpha}}$.

• 성인간호학회지
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• 제18권3호
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• pp.488-499
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• 2006

Purpose: Behavioral symptoms in dementia (BSD) are one of the most disturbing behaviors to caregivers and a major reason for nursing home placement. Behavioral symptoms are often treated with psychotropic drugs (PD), however, the effect of such drugs for the frail elderly dementia patient is not certain because of their critical adverse effects. Theoretical model applicable to nursing practice for BSD in nursing homes, which is essential in guiding and evaluating such interventions, is absent. This article presents the process of developing a theoretical model of BSD in nursing homes. Method: Using Walker and Avants' theory synthesis method, three behavior models and two system models were incorporated into the proposed model to provide the theoretical and analytical explanation of the relationships between PD usage, its determinants, and BSD. Results: Resident variables and nursing home variables related to the two focal concepts (i.e., PD usage and BSD) were identified. Resident variables include demographical characteristics such as age and gender, and dementia-compromised functions such as cognitive and functional impairment. Nursing home variables include facility characteristics such as ownership type and size, and physical and psychosocial environment. Conclusion: The proposed model suggests that fulfillment of resident unmet needs through improvement of physical and psychosocial environment may produce better health outcomes of nursing home residents with BSD. Assessment and intervening environmental triggers of such behaviors are also suggested to be prior to the PD usage.

• Nuclear Engineering and Technology
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• 제52권2호
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• pp.238-247
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• 2020

The Burnable Poison (BP) is very important for all Light Water Reactors in order to hold-down the initial excess reactivity and to control power peaking. The use of BP is even more essential as the excess reactivity increases significantly with a longer operation cycle. In this paper a feasibility study was conducted in order to investigate the benefits of a new combinational BP concept designed for 24-month cycle PWR core. The reference designs in this study are based on the two Korean fuel assemblies; 17 × 17 Westinghouse (WH) design and 16 × 16 Combustion Engineering (CE) design. A modification was done on these two designs to extend their cycle length from 18 months into 24 months. DeCART2D-MASTER code system was used to perform assembly and core calculations for both designs. A preliminary test was conducted in order to choose the best BP suitable for 24-month as a representative for single BP concept. The comparison between the results of two concepts (combinational BP concept and single BP concept) showed that the combinational BP concept can replace the single BP concept with better performance on holding down the initial excess reactivity without violating the design limitations.

• 디자인학연구
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• 제17권4호
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• pp.327-336
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• 2004

현대는 점점 더 기호의 복잡성으로 다양한 의미를 생산해내는 문화가 지배적으로 되어가고 있다. 정보의 매개체로서 중요한 캐릭터란 시각을 통해서 경험하는 대상물의 본질적인 특성이다. 캐릭터는 형태에 의해서 상징적인 의미를 가지며 기호화된다. 애니메이션에 있어 캐릭터는 단순히 이미지의 표현이 아닌, 하나의 기호에 또 다른 기호를 중첩시켜 의미 작용을 확장시켜 가는 시각커뮤니케이션이다. 이러한 시각커뮤니케이션 수단으로서의 캐릭터에 표출된 시각적, 문화적 요소의 분석은 애니메이션에 나타난 캐릭터가 단순히 미학적 매커니즘이 아닌 새로운 스타일을 이끌어가는 문화코드로서의 역할을 수행할 수 있다는 가능성을 제시하고자 하는 것이다. 이를 위해 퍼스의 기호 유형 범주인 도상, 지표, 상징이라는 개념을 들어 영화 ‘슈렉’에 나타난 캐릭터의 외모와 성격적 특성에 대해 체계적인 분석을 시도하면서 애니메이션이 나타내고 있는 기호현상들을 연구하였다.