• 한국의류학회지
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• 제27권11호
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• pp.1219-1228
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• 2003

This research was conducted to find out what the general globalization trends of Korean fashion enterprises are, and what the factors required the Korean fashion enterprises to improve the global competitiveness under the globalized circumstances are. The data were collected from the survey by questionnaire on Korean leading fashion enterprises and the Directory of Companies Branching out abroad in 2000/2001(Korea Trade-Investment Promotion Agency, 2000). The Results of the research are as follows: first, Korean fashion enterprises expanded evenly worldwide in the sales and distribution functions while relying heavily on Asian countries for manufacturing functions; Secondly, the globalization of Korean leading fashion enterprises was progressed, but still remains at the stage of the sales of manufacturing capability or the sales of low costs products rather than at the stage of manufacturing products of high added-value or the sales of design or marketing capability. Thirdly, the factors for the global competitiveness of the Korean fashion enterprises are related to capability of low cost, quick response, product development, marketing, internationalization and high value added.

• The Journal of Asian Finance, Economics and Business
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• 제8권3호
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• pp.967-976
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• 2021

This study aimed to investigate the mechanism by which service companies transfer their services overseas and create new value while interacting with local characteristics. A narrative analysis method was used in a case study of Ajisen Ramen, a Japanese service company that created a Japanese-style ramen restaurant, which experienced rapid growth in China. This study analyzed the restaurant as global service innovation and constructed a causal mechanism to explain the resulting rapid growth. In the pre-entry stage, the tangible value source core service facilitated its successful overseas transfer. In the post-entry stage, value source core service standardization and value sharing were interrelated and locally accepted factors. Knowledge of the local characteristics influenced the local storefront format that allowed contact with local customers. This local front format made it possible to offer local customers new value. The global service innovation mechanism developed through this study reflects a causal diagram that correlated the theoretical concepts of these events.

• International Journal of Costume and Fashion
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• 제6권2호
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• pp.11-27
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• 2006

The purpose of this study is to develop highly valued fashion cultural items using Korean face and human images to enhance global competition. The methods of this study include: historical study on the face/human images which appear on the dress; design by stage according to Lamb & Kallal's apparel design process; development of products using digital textile printing technology; and case study by objective evaluation through Grant's alpha-beta model. The procedure and the results of this study are as follows: First, in the problem identification stage, the need to develop fashion cultural products of Korean face/human images which are symbolic, aesthetic, and functional was recognized in order to enhance global competition. Second, in the preliminary idea stage, the fashion cultural products and the components that meet the above 3 standards for design were determined and first design was drawn up. The source of the design was extrapolated from face/human images, which appeared on the murals of the ancient Korea, the portraits and custom paintings from the Chosun Dynasty. From these images, a total of 7 design series of T-shirts with an "ULGUL" logo, scarves, and artwalls were developed using "obangsaek" which are five Korean traditional colors including red, blue, black. white, and yellow on cottons and silks. Third, in the design refinement stage, based on the preference survey, more varying design methods were used to develop 25 new designs. Fourth, in prototype development stage, based on the preference survey conducted on fashion professionals and general public from the previous stage, which showed preference for T-shirts and scarves, 3 designs on T-shirts and 2 designs on scarves were printed and produced using the DTP (Digital Textile Printing). Fifth, in the evaluation stage, Grant's alpha-beta model was used to perform comparative evaluation on the symbolic, aesthetic, and functional criteria of the new designs over the existing ones. The new designs received excellent results in all three criteria and a special recognition was given to symbolism of the new designs.

• 설비공학논문집
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• 제25권3호
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• pp.168-172
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• 2013

A preliminary performance test of a 30RT 2-stage screw heat pump was carried out in order to develop a high performance large-scale unutilized energy source heat pump system, which will be used for district heating and cooling. In this study, two issues of the system operating control were investigated. The first issue is the mode switching control from 1-stage to 2-stage. A stable 2-stage heating operation is guaranteed, only if the load-side water inlet temperature is over a certain value, where the 1-stage heating operation should be done first from a cold start. The second issue is oil level control. An oil shortage problem in the low stage compressor, which depends on the degree of suction superheat, was solved by a proper oil level control scheme.

• International journal of advanced smart convergence
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• 제7권4호
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• pp.27-39
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• 2018

Since the global positioning system (GPS) has been included in mobile devices (e.g., for car navigation, in smartphones, and in smart watches), the impact of personal GPS log data on daily life has been unprecedented. For example, such log data have been used to solve public problems, such as mass transit traffic patterns, finding optimum travelers' routes, and determining prospective business zones. However, a real-time analysis technique for GPS log data has been unattainable due to theoretical limitations. We introduced a machine learning model in order to resolve the limitation. In this paper presents a new, three-stage real-time prediction model for a person's daily route activity. In the first stage, a machine learning-based clustering algorithm is adopted for place detection. The training data set was a personal GPS tracking history. In the second stage, prediction of a new person's transient mode is studied. In the third stage, to represent the person's activity on those daily routes, inference rules are applied.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.28-29
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• 2015

The tire production facility is a large-scale construction with the complexity of a manufacturing process. The process utilities should be wide-ranging as an effective arrangement of them is highly important. All the necessary information should be clarified together with the manufacturer at the basic planning stage, and this design should be developed to comply with the local culture and regulations. It is important to carry out more advanced engineering in terms of process, cost and quality, even if it is difficult to standardize due to the cultural and geographical conditions and regulations. The key point is to reflect all the given conditions and make a clear design during the design stage, to eliminate the problems after the construction has begun. Another key point is the delivery system, which must be totally managed from the initial design stage until the construction stage by proven companies. Flexibility, quick action, and single responsibility will be the fundamental features in all the steps of the project.

• Journal of applied mathematics & informatics
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• 제27권5_6호
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• pp.1097-1107
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• 2009

In this paper, three species stage-structured predator-prey model with time delayed and periodic constant impulsive perturbations of predator at fixed times is proposed and investigated. We show that the conditions for the global attractivity of prey(pest)-extinction periodic solution and permanence of the system. Our model exhibits a new modelling method which is applied to investigate impulsive delay differential equations. Our results give some reasonable suggestions for pest management.

• 화약ㆍ발파
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• 제41권4호
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• pp.9-16
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• 2023

터널의 대표적인 굴착방식인 TBM 공법과 NATM 공법의 지구온난화 영향도를 비교하기 위해 각 방식에 대한 전과정평가 (Life Cycle Assessment)를 수행하였다. 전과정평가는 제품 제조 전 단계, 제품 제조 단계, 사용 단계, 폐기 단계를 고려하여 탄소배출량의 합산으로 비교해야 마땅하나, TBM (Tunnel Boring Machine)의 제조 및 폐기 데이터에 대한 접근이 제한되어 사용단계에 초점을 맞추어 분석할 수 밖에 없었다. 일반적으로 제품 제조 전 단계 및 제품 제조 단계에서 배출되는 탄소 배출량이 제품수명주기의 전과정에서 배출되는 탄소배출량의 90%를 넘는 경우가 대부분이다. 따라서 사용 단계의 비교만으로는 분석 목표를 달성하기 어렵기 때문에 분석 범위를 확장하였고, 제조 데이터에 접근이 가능한 NATM 공법에 대해서는 제품제조 전 단계 및 제품제조 단계를 포함한 과정에 대한 탄소 배출량을 산출하여 비교해 본 결과, TBM 공법은 사용 단계만 고려했음에도 불구하고 전 과정을 고려한 NATM 공법에 비해 탄소 배출량이 많게 결과값이 산출되었다. 이러한 결과는 향후 터널 시공설계 시 최근 환경영향분야 중 관심이 집중되고 있는 기후 변화 (지구온난화)의 영향도를 고려할 때 NATM 공법이 상대적으로 친환경적이라 볼 수 있을 것이다.

• 한국가정과교육학회지
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• 제35권4호
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• pp.81-98
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• 2023

본 연구는 2022 개정 교육과정의 맥락에서 세계시민교육이 필요함에 따라 실천적 문제 중심 프로그램 개발 과정에 따른 초등 가정과 세계시민교육 프로그램 내용체계를 개발하는 데 목적이 있다. 본 연구는 분석, 설계, 개발 및 전문가 협의 과정을 거쳐 이루어졌다. 첫째, 분석 단계에서는 가정과에서의 세계시민교육이 요구되는 교육적 흐름을 밝히기 위해 2022 개정 교육과정 총론과 각론, 교육부 발표 자료, 세계시민교육 관련 미래 교육 문서를 분석하여 국가 교육과정에서 세계시민교육의 필요성을 확인하였다. '급변하는 미래 사회를 살아갈 학생들은 세계시민역량이 반영된 가정과교육에서 실천적 행동을 통해 궁극적인 목표인 개인과 사회의 웰빙을 이루는 것이 목표'임을 관계적으로 보여주는 가정과 세계시민교육 목표 프레임워크를 도출하였다. 이에 따라 항구적 문제로 "생활환경과 관련한 지속 가능한 선택을 위해 세계시민으로서 나는 어떤 행동을 해야 할까?"를 설정하였다. 설계 단계에서는, 2022 개정 초등학교 가정과교육과정에서 '생활환경과 지속 가능한 선택' 영역의 핵심아이디어 네 개를 분석하여 하위관심사와 실천적 문제를 각각 도출하였다. 마지막으로 개발 단계에서는, 가정과 세계시민교육 목표 프레임워크에서 근거한 네 가지 내용요소 도출 기준에 따라 내용요소를 도출하였다. 본 연구는 미래 사회를 대비하는 세계시민역량 관련 문서와 2022 개정 교육과정 총론과 가정과교육과정을 분석하고 가정과에서의 세계시민교육 필요성을 분석하여, 가정과 세계시민교육의 기반이 되는 교육방향을 제시한 데 의의가 있다.

• 전자공학회논문지SC
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• 제37권2호
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• pp.29-36
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• 2000

본 논문에서는 트랜지스터 동작영역에 독립적인 일정 트랜스컨덕턴스 rail-to-tail 입력회로 및 AB-급 출력회로를 갖는 2단 연산증폭기를 제시한다. rail-to-rail 입력회로는 추가 NMOS 및 PMOS 차동 입력단 구조를 사용하여, 전체 동상 입력 전압에서 항상 일정한 트랜스컨덕턴스를 갖도록 하였다. 이러한 입력단 회로는 기존 MOS의 정확한 전류-전압 관계식을 사용하지 않고, 트랜지스터의 동작영역에서, 즉 강 반전 및 약 반전, 독립적인 새로운 광역 선형 전류관계를 제안한다. 본 논문에서 제안한 입력단 회로를 SPICE를 사용하여 모의실험 결과, 전체 동상 입력 전압에 대해서 4.3%의 변화율이 나타남을 검증하였다. AB-급 출력단 회로는 공급 전압원에 독립적인 일정한 동작 전류값을 갖고, 출력 전압은 Vss+0.1에서 Vdd-0.15까지 구동하는 전압 특성을 나타내었다. 또한 출력단은 AB-급 궤환 제어 방식을 사용하여 저전압에서 동작 할 수 있다. 전체 연산 증폭기의 단일-이득 주파수 및 DC 전압이득 변화율은 각각 4.2% 및 12%로 나타냈다.