• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.12
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• pp.5655-5660
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• 2012

The objective of this study is theoretically to suggest the effective heat exchanger design method using boundary layer analysis. The boundary layer formation and interruption on rectangular plate and round plate fins are explained and the heat transfer coefficients showed with the variation of the velocity and temperature boundary layer. In addition, the flow pattern on one plate fin surface considered as external flow and flow pattern between fins considered as internal flow. As a result, theoretical method for the boundary layer interruption avoidance is suggested and the heat transfer coefficient of the round plate fin was higher than that of the rectangular plate fin because of the less thermal and velocity boundary layer thickness except the centerline.

• The Journal of the Korea institute of electronic communication sciences
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• v.16 no.4
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• pp.675-682
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• 2021

In an environment in which a limited type and number of sensors are used, a demand for acquiring various context information may appear. In this study, a new method for acquiring various context information than before was proposed in an environment in which a limited number of sensors are required. To this end, a clue was obtained from the Exon-Intron theory, which is gaining great interest in the field of biology, and a method for acquiring various context information was proposed based on this. By applying Exon-Intron's selective cutting and combining method, events of each sensor were efficiently cut and each event data was combined and utilized, thereby realizing the diversification of the acquired context information.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1993.04b
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• pp.131-136
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• 1993

일반적으로 공작기계 주축계에 대해서 요구되는 기본적인 항목들로는 고강성, 고감쇠, 고회전정밀도, 저발열, 장수명 등이 있다. 최근에는 이러한 기능들과 함께 가공능률과 가공정밀도의 향상을 도모하기 위해서 고속절삭을 실현햐ㄹ 수 있는 공작기계 주축계의 고속화, 즉 고속 주축계에 대한 연구가 활발히 진행되고 있다. 본 연구에서는 고속주축계의 동특성을 체계적으로해석하기 위해서 주축회전수의 영향을 고려한 유한요소모델(finite element model)을 도입하였다. 특히 주축은 세장비가 비교적 자기 때문에 Timoshenko보 이론으로, 베어링은 유한한 폭을 가지고 있기 때문에 반경방향 외에도 모멘트방향의 강성 및 감쇠특성을 가지고 있는 것으로 모델화 하였다. 그리고 고속주축계의 설계조건들을 도출하기 위해서 동특성 해석결과들로 부터 고속주축계의 모드매개변수들인 고유진동수와 감쇠비에 대한 주축 회전수, 베어링의 지지특성, 베어 링의 간격, 주축재료의 내부감쇠율 등의 영향을 고찰하였다.

• Journal of the Korean Institute of Telematics and Electronics
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• v.11 no.2
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• pp.33-39
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• 1974

Networks showing often and short stable voltage inversion negative immittance converter(VNIC) characteristics are proposed by simplified equivalent model. Open stable VNIC characteristics can be obtained of controlling the base voltage of common base connection according to output voltage and short stable VNIC characteristics according to input dotage. An unbalanced circuit showing open and short stable characteristics is constructed and ana1ysis. The experimental results are coincident with the calculated within 10% error.

• 한국벤처창업학회:학술대회논문집
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• 2018.04a
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• pp.49-55
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• 2018

현장실습은 이론 위주의 대학교육과 실무 역량을 중요시하는 산업체 수요를 매칭시켜 취업률을 제고할 수 있는 중요한 수단으로 최근 청년 일자리 창출 및 취업 역량 제고를 위해 현장실습이 중요하게 인식되면서, 정부의 현장실습 관련 재정지원 프로그램들이 다양하게 추진중이다. 하지만, 정부지원의 현장실습 사업들은 서로 다른 운영기준을 제시하여 참여학생 뿐만 아니라, 산업체와 대학에서도 혼란이 가중되고 있으며, 사업 추진 상의 각종 문제들이 발생하고 있다. 특히 이러한 다양한 프로그램이 유기적 연계가 미흡하여 그 고유의 목적을 달성하는 데에 어려움이 예상된다. 이에, 국내의 현장실습 프로그램을 조사하고 산업체, 대학, 학생의 애로사항 뿐만 아니라, 제도적 문제점을 파악한다. 또한 이러한 문제점을 분류하고 통합하여 개선해야 할 사항에 대해 문제제기를 통해 국내 현장실습 프로그램의 고도화를 위한 유기적인 선순환 프로그램 모형을 제시하고 이의 실현을 위한 산학관 주체의 정책 및 시사점을 제언한다.

• Iberoamérica
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• v.22 no.1
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• pp.31-72
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• 2020

This study examines the concepts and policy factors regarding gender-mainstreaming strategies and urban areas that have been discussed in the fields of international norms and development cooperation from the perspective of the Mexican government. It analyzes how gender-mainstreaming strategy is integrated and realized through Mexican law and key programs carried out by Mexico City. Through a literature review, this study builds upon previous research and theoretical discussions. In fact, Mexican federal government is considered to have successfully achieved "gender institutionalization." Within the framework of the law and institutions, the programs promoted by Mexico City aim to realize women's rights and meet their needs in the metropolis, while emphasizing a wider participation by citizens to realize these urban rights. In particular, the government of Mexico City is expanding on policies and programs that focus on strengthening the financial autonomy of women by understanding women's vulnerabilities as inequalities arising in the areas of the economy, space, and time.

• Journal of the Institute of Electronics and Information Engineers
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• v.53 no.12
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• pp.88-93
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• 2016

This paper presents a method of constructing the highly performance switching circuit(HPSC) over finite fields. The proposed method is as following. First of all, we extract the input/output relationship of linear characteristics for the given digital switching functions, Next, we convert the input/output relationship to Directed Cyclic Graph using basic gates adder and coefficient multiplier that are defined by mathematical properties in finite fields. Also, we propose the new factorization method for matrix characteristics equation that represent the relationship of the input/output characteristics. The proposed method have properties of generalization and regularity. Also, the proposed method is possible to any prime number multiplication expression.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.12 no.12
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• pp.2201-2206
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• 2008

This paper presents a method of constructing the Linear Digital Switching Function(LDSF) over finite fields. The proposed method is as following. First of all, we extract the input/output relationship of linear characteristics for the given digital switching functions, Next, we convert the input/output relationship to Directed Cyclic Graph(DCG) using basic gates adder and coefficient multiplier that are defined by mathematical properties in finite fields. Also, we propose the new factorization method for matrix characteristics equation that represent the relationship of the input/output characteristics. The proposed method have properties of generalization and regularity. Also, the proposed method is possible to any prime number multiplication expression.

• Journal of Korean Medical classics
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• v.19 no.2 s.33
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• pp.179-195
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• 2006

의약학적존재화발전인소유내재인소(?約學的存在和發展因素有內在因素), 내재인소리유학문본신적특수이론계통(內在因素里有學問本身的特殊理論系統), 함유혼풍부적과학의의(涵有婚豊富的科學意義), 임상치료효과(臨床治療效果), 병인적신뢰등(病人的信賴等). 외재인소리유정치(外在因素里有政治), 정책(政策), 경제(經濟), 문화방면등등(文化方面等等). 저반인소중의학정책적영향시최직접화결정성적(著般因素中?學政策的影向是最直接和決定性的). 병차의학정책적직접인소리유의약방면유관적제도(幷且?學政策的直接因素里有?約方面有?的制度), 정책(政策), 법평등(法平等), 간접인소리유국가전장제도(間接因素里有國家典章制度), 국가방침화정책등(國歌方針和政策等). 재고대봉건사회상정책적개념시국가(在古代封建社會上政策的槪念是國家), 정당재특정역사시기상위료실현노선화임무(政?在特定歷史時期上爲了悉現路善和任務), 규정적행동준칙(規定的行動准則), 비여선황제적소(比如宣皇帝的沼), 령(領), 칙(勅), 유급정부적각중정령등(愉及政府的各?政領等). 본논문시대한한의학원전학회지상기고적(本論文是大韓韓?學原典學會指上寄稿的)[관우진한시기의정사연구(?于秦漢時基?政史硏究)]상여천명(上如闡明), 통과화중국량준교수공동연구적연속적연구결과(通過和中國梁畯敎授共同硏究的連續的硏究結果). 지우위진남북조시기적의정사(至于魏晉南北朝試期的?政史), 논자관우위진남북조정치개요(?者?于魏晉南北朝政治槪要), 의약정책(?約政策), 의정조직적초보구조(?政組織的初步柩?), 의약정책화의약발전관계(?約政策和?約發展關系), 관우의정평가와형성원인등분성오개방면후(?于?政?伽和形成原因等分成五介方面后), 진행연구병정리보고기결과(進行硏究幷整理報告基結果).

• The Journal of the Korea Contents Association
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• v.18 no.9
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• pp.510-520
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• 2018

This study explored the phenomenon of heterosexual women embracing Boys' Love manga within the heteronormativity context from a feminist psychological perspective. Specifically, the issue of genre characteristics of Boys' Love manga, women's psychological mechanism of reading Boys' Love manga, and the functions and effects of embracing Boys' Love manga were discussed. As a theoretical framework of analysis, I started from the classical psychoanalysis and critically adopted the concepts of the various camps of feminism, queer theory, and Huizinga's Homo Rudens. The results show that Boys' Love manga can be classified as a sub-category of the romance genre, which fulfills heterosexual women's desires of eternal love and equal partnership. From these wish-fulfilling fantasies, heterosexual women attempt to be decontextualized from the heteropatriarchism, to enjoy distancing and voyeuristic separation from the characters in the texts, and to disturb the dichotomous gender system through gender reversal identification. These processes, which can be regarded as a women's play challenging sexual rigorism, ultimately bring about an awareness of the female sexual subjectivity.