• 한국자기학회:학술대회 개요집
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• 한국자기학회 2007년도 The 1st International Symposium on Advanced Magnetic Materials
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• pp.55.2-55.2
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• 2007

• 한국광학회:학술대회논문집
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• 한국광학회 2002년도 하계학술발표회
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• pp.94-95
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• 2002

Photonic crystal (PC) has special interests for their promising applications in three-dimensional photon control and integrated devices. In a nonlinear photonic crystal (NPC), optical intensity in a defect layer is greatly increased due to the location function of NPC and nonlinearity. The nonliearity of the defect layer is very much enhanced because the group velocity is reduced and the interaction time between light and nonlinear medium in the defect layer is enlarged. (omitted)

• 한국심리학회지 : 코칭
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• 제5권2호
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• pp.25-51
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• 2021

본 연구는 기업 팀장이 인식하는 팀원과의 의사소통 과정을 깊이 있게 탐색하는데 목적이 있다. 이를 위해 서울·경기 지역의 대기업, 중견 기업, 외국계 기업의 팀장 10명을 대상으로 심층면접을 진행하였고, Strauss와 Corbin이 제시한 근거이론 연구방법 절차에 따라 분석하였다. 분석 결과에 따라 총 51개의 개념과 17개의 하위범주 그리고 8개의 범주가 도출되었다. 인과적 조건으로는 '조직에 필요한 소통을 고민하고 재해석함'이 개념으로 도출되었고, 이에 따른 중심현상은 '업무대화와 사적대화 병행방식으로 의도적인 노력을 함'으로 나타났다. 맥락적 조건은 '환경변화에 대한 대처 필요성을 인식함', 중재적 조건은 '스스로 성찰하고 셀프코칭 시간을 가짐'이 도출되었다. 작용/상호작용 전략은 업무중심 대처, 갈등해결 대처, 관계증진 대처를 의사소통 과정으로 개념화되었고, 중심현상 상호작용 결과로서 '조직 내 선순환 소통을 인식함'으로 확인되었다. 팀장의 의사소통 과정분석 결과는 노력단계, 접근단계, 대처단계, 순환단계로 나타났고, 그 유형 분석 결과로써 업무중심 대처는 촉진자, 갈등해결 대처는 조력자, 관계증진 대처는 배려자로 나타났다. 본 연구는 기업 팀장이 팀원과의 관계에서 의사소통을 어떻게 인식하고 표현하는지에 대한 경험적 연구로 기업에서의 리더십 코칭과 리더 대상 상담에 차별적인 개입전략을 세우기 위한 정보를 제공하는데 의의가 있다.

• 한국해안·해양공학회논문집
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• 제32권5호
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• pp.340-350
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• 2020

한반도 대기모델의 해상풍을 입력자료로 사용하는 초단기 파랑예측시스템을 구축하고, 예측성능을 결정하는 중요한 요소인 입력바람장-파랑 상호작용을 고려하여, 수치모의실험을 수행하였다. 예측성능을 검증하기 위해 비태풍시기와 태풍시기에 대한 파랑모델의 예측결과를 기상청 계류부이 관측자료와 비교하였다. 비태풍시기에는 전반적으로 모델의 과소모의 경향이 나타났으며, 입력바람장과 파랑의 상호작용 물리계수를 증가시키면 과소모의하는 예측경향과 평균제곱근오차(RMSE)는 감소하는 것을 확인할 수 있었다. RMSE가 최소가 되는 실험조건을 적용하여 태풍시기를 분석한 결과, 비태풍시기와 비교하여 예측오차가 증가하였다. 이는 파랑모델이 상대적으로 약한 비태풍시기의 바람장 영향을 고려했기 때문으로 보이며, 강한 바람장 형성으로 인한 파랑의 비선형효과와 파랑에너지 소산효과가 충분히 반영되지 않았던 것으로 판단된다.

• Structural Engineering and Mechanics
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• 제29권4호
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• pp.355-380
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• 2008

In this study, the new three-dimensional finite element analysis model of guideway structures considering ultra high-speed magnetic levitation train-bridge interaction, in which the various improved finite elements are used to model structural members, is proposed. The box-type bridge deck of guideway structures is modeled by Nonconforming Flat Shell finite elements with six DOF (degrees of freedom). The sidewalls on a bridge deck are idealized by using beam finite elements and spring connecting elements. The vehicle model devised for an ultra high-speed Maglev train is employed, which is composed of rigid bodies with concentrated mass. The characteristics of levitation and guidance force, which exist between the super-conducting magnet and guideway, are modeled with the equivalent spring model. By Lagrange's equations of motion, the equations of motion of Maglev train are formulated. Finally, by deriving the equations of the force acting on the guideway considering Maglev train-bridge interaction, the complete system matrices of Maglev train-guideway structure system are composed.

• International Journal of Computer Science & Network Security
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• 제22권11호
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• pp.19-24
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• 2022

The article determines that, in the preservation of cultural heritage, lifestyle, an important role is played by the subjects' high assessment of the probability of achieving the result they need through the implementation of traditional models, ways of interaction. If dissatisfaction with the results of interaction is great, but there are no necessary conditions for a phased resolution of contradictions, for changing, developing interpersonal relations within the framework of the existing system, interaction becomes more difficult. It has been determined that the presence of effective models that show the possibility of meeting the requirements for the psyche of a variety of individuals from the side of activity, activating an extended search for mutually acceptable ways to success, depends on the development of the personality and its social relations, the success of interaction between people, socially psychological climate in the team.

• 전기학회논문지
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• 제63권6호
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• pp.855-859
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• 2014

Quality criteria for interaction between a pantograph and overhead contact wire is a most important requirement to assess of the performance for the current collection system. Interaction performance between pantograph and catenary system is subject to approval by the infrastructure manager when a new design and contraction of overhead contact line and pantograph are installed. Among the various performance, percentage of arcing at maximum line speed is a simple test method compared with contact force of pantograph due to direct sensing of pantagraph, calibrations, installations of train, and etc. On the other hand, percentage of arcing is need to reliable arcing detector and general requirements with accordance with EN 50317. In this paper, percentage of arcing are investigated on the function of duration of arc and proposed which is satiable of percentage of arcing. As a results, we proposed which duration of arcs are unsuitable from infrastructures point of view as performance testing for quality of current collection.

• 산업융합연구
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• 제21권1호
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• pp.9-31
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• 2023

본 연구는 복잡하고 다양한 컨설팅 프로젝트에 참여하는 구성원들의 서로 다른 인식체계와 서로 다른 지식체계에 대한 프로젝트의 팀성과에 영향을 미치는 팀협업의 연구다. 본 연구의 목적은 컨설팅 프로젝트의 인지적 상호작용 과정에서 팀공유인지, 팀정보교류, 팀지식통합, 팀효능감의 매개효과를 분석하는 것이다. 본 연구는 선행 연구를 바탕으로 연구모형과 연구가설을 수립하였다. 컨설팅 프로젝트에 참여한 컨설턴트를 대상으로 자료를 수집하였다. 연구가설에 대한 실증적 분석을 위해 인구통계학적 분석, 타당도 및 신뢰성 분석, 가설검정을 위한 구조모형 분석, 팬텀 변수를 이용한 매개효과 분석을 수행하였다. 연구 결과, 팀성과를 높이기 위해서는 인식체계인 팀공유인지 및 팀정보교류의 개선이 필요하며, 지식체계인 팀지식 통합이 함께 향상되어야 한다. 따라서 서로 다른 인지 및 지식체계를 통합하고, 서로의 전문성을 신뢰하며, 성공적으로 팀 작업을 수행할 수 있는 팀효능감이 필요하다. 그리고 향후 인지 과정의 하위요인에 관한 연구가 필요하다고 본다.

• Journal of Pharmaceutical Investigation
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• 제34권2호
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• pp.101-106
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• 2004

This work aims at examining the cellular uptake behavior of poly(D,L-lactide-co-glycolide) (PLGA) nanoparticles derivatized with a protein transduction domain (PTD) using HeLa cells. For this purpose, $Tat_{49-57}$ peptide derived from transcriptional activation (Tat) protein of HIV type-1 was covalently conjugated to the terminal end of PLGA. Nanoparticles were ten prepared with the $Tat_{49-57}-PLGA$ conjugates by a spontaneous phase inversion method. The prepared particles had a mean diameter of ca. 84 nm, as measured by dynamic light scattering. The interaction of the Tat-PLGA nanoparticles with cells was examined by using confocal laser scanning microscopy. It was found tat Tat-PLGA nanoparticles incubated with HeLa cells could efficiently translocate into cytoplasm, while plain PLGA nanoparticles showed negligible cellular uptake. In addition, even at $4^{\circ}C$ or in the presence of sodium azide significant cellular internalization of Tat-PLGA nanoparticles was still observed. These results indicate that a non-endocytotic translocation mechanism might be involved in the cellular uptake of Tat-PLGA nanoparticles.

• 한국어교육
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• 제29권4호
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• pp.1-29
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• 2018

This study aims to develop the constructs for evaluating team presentations performed by undergraduate international students in Korea. To achieve the goal, this study reviews related research and sets the criteria to analyze the problems of team presentations performed in Korean by undergraduate international students. Through this analysis we got to know which problems they were making. They were failing to reorganize the resources they had referenced and to organize the contents into one. And errors or mistakes of grammar and spelling were found often in their PPT files, and the editing styles of the PPTs were not consistent. Moreover, their performances were not unlike their PPT files. One made a good presentation but the other students just recited the script without interaction with the audience. Moreover, they could not operate the Q&A part and lead the discussion well, and components for wrapping up the presentation also were omitted frequently. After the analysis, this study conducted a survey with 23 Korean language educators asking about the validity of the construct and description of the survey. Based on the collected feedback, the construct list has been modified primarily, and carried out a second survey with an expert group. Based on their opinion, the final construct list was fine-tuned.