• The Korean Journal of Applied Statistics
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• v.18 no.3
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• pp.673-687
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• 2005

We investigate both the design-based and model-based inferences, which are usual inferential methods in survey sampling. While the design-based inference is on the basis of randomization principle, The motel-based inference is based on likelihood principle as well as conditionality principle. There have been some disputes between two inferences for a long time and those have not yet been determined. In this paper we reviewed some issues on two inferences and compared their advantages and disadvantages in some viewpoints.

• Korean Journal of Legislative Studies
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• v.25 no.3
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• pp.5-31
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• 2019

In the process of changing the Korean electoral system, various terms such as representation, majority, minority, plurality, and proportionality are not used correctly, making normative judgment on its desirable electoral system difficult. This paper clarifies the concepts and terminology related to the electoral system in order to enable proper normative discussion. First, the misuse of the names of the electoral system is reviewed. This includes the majority representative system versus the minority representative system, the single-member constituency versus the multi-member constituency, the absolute majority system versus the relative majority system, and the majority representative system versus the proportional representative system. Next, the principles of representation, proportionality, democracy, direct ballot, and equal ballot are discussed to evaluate the decisions made by the Constitutional Court of Korea. In the current electoral system of the National Assembly, the equivalence between its constituency member and its proportional representation member is very low in terms of proportionality between votes received and seats allotted. Finally, the coherence between proportional representation and other political institutions is examined. Strengthening the proportionality of parliamentary elections alone does not necessarily increase the proportionality of the entire power structure.

• Journal of Service Research and Studies
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• v.9 no.4
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• pp.1-17
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• 2019

This study was conducted to establish a service philosophy as a major ideology in the New Economy and Society. The service philosophy, which is the ideological foundation to lead the service economy era, should be an idea that can develop the new economy society, reflecting the nature principle of the universe and human being. The service philosophy was derived based on the study of the human representative ideology and the study of the new economy and service essence. A good idea must be consistent with the principles of the universe and be consistent with the essence of the human representative ideology, so that it reflects the core principles of the universe and the core of human representative ideas. In addition, the central idea should reflect the changes of the New Economy Society in the future. Therefore, the essence of the service and the change of the New Economy Society were analyzed. We analyzed the social and philosophical significance of the macroscopic cosmology and the microscopic quantum theory of modern physics. We analyzed the essence of Oriental and Western representative ideas and derived implications of these ideas from the viewpoint of modern society where service is central. Based on the essence principle of the universe and human, we have established the service philosophy structure and derived the human, historical, social, economic, and managerial aspects of service philosophy. The structure of the derived service philosophy was presented, and discussions were conducted for future research.

• Journal of Service Research and Studies
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• v.9 no.3
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• pp.1-16
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• 2019

This study considers service philosophy of Western representative ideology to establish service philosophy following previous studies. The service philosophy is analyzed by referring to previous researches, and the structure and operation model of service philosophy are presented together. In the analysis of the Western representative thought by the age, the ancient Mediterranean philosophy and the Athenian philosophy were analyzed in detail from the viewpoint of the service structure, and the modern thoughts were analyzed from the perspective of the service operation model consistency. We analyze whether the intangibility and process characteristics of service are consistent with the world view of Western representative ideology and analyzed whether the essential characteristics of service, such as relationship, interactivity, horizontality, and harmony, are emphasized in Western representative ideology. Also, we examined whether the spiral development model of service matches the world development model in Western representative ideology. From the ancient thought to the modern thought, mainstream thoughts emphasize the dialectical development of the conflicts, and the Taegeuk - type basic structure of service is consistent with the world 's operating structure in Western thought. In addition, it is shown that circular reasoning and process theory are central idea from ancient times to modern thought, and process theory is consistent with service operation model which creates value. Relationality and harmoniousness are presented by the majority of Western thinkers as the fundamental operating principle of the world, and both the interactive and horizontal aspects are presented as ideal operating models of the world. It is confirmed that the service philosophy can play a central role as the ideology that leads the human society.

• Journal of Service Research and Studies
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• v.9 no.1
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• pp.1-16
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• 2019

This study analyzed Korean representative ideology to establish a service philosophy. As a follow - up study of the service philosophy consistency study of the Korean original idea, we searched for the coherence as the philosophy of the service age in the Korean representative ideology. The basic structure and operation model of service philosophy are presented, and the service philosophy of major korean ideology is derived. The philosophy of service can be presented by the structure of service and the operation of service. The essential characteristics of the service are relationship, interactivity, horizontality, and harmony, and the service structure that reflects this is the coexistence of products and services. Based on the discussion on the structure and operation of the service philosophy, the service philosophy synthesis of Korean representative ideology is presented. From the Silla era to the Koryo dynasty, the essence of Korean Buddhism thought is in line with the service philosophy, and it was found that Toegye and Yulgok to Dasan's thoughts are also consistent with service philosophy. In the future, we need further studies to refine the structure and operational principles of the service philosophy and to develop it into a big idea. In addition, it is necessary to follow up the service philosophy of Oriental representative ideology centering on Chinese and Indian philosophy. Ultimately, it is necessary to establish a service philosophy as the main philosophical thought and to establish a service philosophy as a desirable future economic and social philosophy.

• Proceedings of the Optical Society of Korea Conference
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• 2000.02a
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• pp.182-187
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• 2000

빛은 공간상에서 전파되는 특성상 전자기파(electromagnetic wave)로 규정될 수 있다. 빛의 파동성은 여러 형태의 간섭을 유발한다. 이중 정밀 길이측정에는 광위상간섭(phase measuring interferometry)의 원리가 대표적으로 이용된다. 그림1은 광위상간섭의 기본원리를 Michelson 광학계를 이용하여 설명하고 있다. 하나의 동일한 광원으로부터 출발된 광속(optical beam)은 광분할기(beam splitter)에 의해 두 개로 별도 광속으로 분활 된다. (중략)

• Journal of the Korean Society for Nondestructive Testing
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• v.37 no.1
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• pp.44-49
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• 2017

본고에서는 열유도 적외선 열화상 기법의 원리와 응용에 있어 기초적인 개념, 특정 상태량 및 실험적 기법에 대하여 소개하도록 한다. 유도 열화상 기법에 적용되는 유도 주파수의 범위는 1500 Hz ~ 52 MHz이며 강자성 강재 단조 부품의 표면결함 검출에 사용되어진다. 균열 검출 감도는 자분탐상기법과 유사하나 필요한 경우 유도 주파수를 낮춤으로서 강재에 숨겨진 결함을 검출할 수 있다. 탄소섬유강화폴리머(CFRP)에서는 섬유 결함을 검출하며, 실리콘 태양 전지에서는 양호한 열적 콘트라스트와 함께 균열을 검출한다. 유도 열화상 기법의 향 후 대표적인 활용분야로는 레일 및 휠과 같은 철도 구성요소에서의 결함 탐상이 있다[1].

• Defense and Technology
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• no.6 s.160
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• pp.40-47
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• 1992

전파흡수체의 응용분야는 사용목적에 따라 민수용과 군수용으로 크게 대별된다 민수용으로는 통신기기의 발달로 인하여 최근에 가장 문제가 되고 있는 전자파 장애(EMI) 대책용으로 사용되며 군수용으로는 무기체계의 생존성 향상(스텔스)으로 사용된다 여기서는 군수용에 초점을 두어 대표적인 응용 예를 살펴보았다

• Electric Engineers Magazine
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• v.204 no.8
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• pp.54-60
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• 1999

본고에서는 기존의 대표적인 피뢰 보호방식과 최신의 신형 ESE 피뢰침에 대해서 피뢰이론, 보호공간, 동작원리, 구조 및 제반 설치사항을 포함한 기술적 특성과 경제성 등을 비교, 검토하고 최신의 피뢰 보호이론 및 신형 피뢰침 설비의 특성을 비교 검토하여 가장 적합한 피뢰 보호설비의 적용 선정기준을 정립하고자 한다.

• Information and Communications Magazine
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• v.31 no.1
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• pp.71-81
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• 2013

본고에서는 자연계에 존재하는 동조 현상을 이해하고 공학적으로 활용하기 위하여 동조 현상에 관한 대표적인 수학적 모델을 살펴보고 동조의 원리를 분석한다. 또한 동조 현상을 공학적으로 활용한 주요 사례를 살펴봄으로써 자연계를 모방한 동기화 방식의 장단점을 분석하고 자연계 모방 기술의 필요성을 역설한다. 아울러 동조 현상을 공학적으로 활용하는데 필요한 향후 연구 이슈를 제시한다.