• 한국전자거래학회:학술대회논문집
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• 한국전자거래학회 2005년도 e-Biz World Conference 2005
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• pp.267-271
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• 2005

The popularity of web services within the IT industry continues to grow as the next generation web technologies. Web services are self·contained, self-describing, modular applications that can be published, located, and invoked across the Web. Web services will be core technology for e-business in the Web. IPv6 is sometimes also called the Next Generation Internet Protocol and is a new version of IP which is designed to be an evolutionary step from IPv4. In this paper, we define problems for adapting web services to IPv6 Environment. This paper survey and explain consideration issues that include standards, components, coexistence of IPv6 and IPv4, etc.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2003년도 추계학술대회논문집
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• pp.1059-1066
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• 2003

A power generation system are proposed to convert ambient mechanical vibration into electrical energy using cantilever-type piezoelectric materials. The vibration-based power device can be used for self-powered systems without batteries. This paper presents the theoretical analysis for the coupled equations of piezoelectric and structural motions and investigates the dynamic characteristics of the self-power system using transfer function method. The theoretical model is verified by the finite element analysis of the resonance frequency, the dynamic response of the structure and the sensor sensibility. Experimental results measured using a prototype system agrees with the theoretical predictions. The system is shown to produce 2.53㎼ in average. Finally, we perform the optimal design for system variables to maximize output power.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1997년도 하계학술대회 논문집 E
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• pp.1837-1839
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• 1997

This study presents the energy transfer of thermal arc in the circuit breaker with self-generation flow without puffer action. The phenomenon of pressure increase in the cylinder which encloses fixed contact was focused on and rising current stage was considered. Temperature and velocity of arc plasma were calculated by using energy balance equation and the amount of energy transfer due to convective flow was calculated.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2001년도 추계종합학술대회
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• pp.579-582
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• 2001

벡터변형은 벡터 양자화(VQ)와 부호화를 통합한 새로운 방법이다. 최근까지 부호화에 적용된 코드북 생성은 LBG 알고리즘이었으나 신경회로망을 기반으로 한 자기생성 특성맵(SOFM: Self Organizing Feature Map)의 장점을 이용하면 시스템의 성능을 개선할 수 있다는 점에 착안하였다. 본 논문에서는 SOFM 알고리즘을 적용한 VTC(Vector Transformation coding)코드북 생성과 LBG 알고리즘의 부호화률에 대한 결과를 비교하여 분석하였다. 벡터 양자화의 문제점은 계산의 복잡성과 코드북 생성에 있으므로 본 연구에서는 이 문제의 해결을 위해 신경망 접근법을 제안한다.

• 전자통신동향분석
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• 제34권2호
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• pp.73-82
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• 2019

Airport is shifted airport 1.0 to airport 4.0 called smart airport and services paradigm is changed into direction to point the customer targeted benefits. Smart airports make use of integrated Internet of Things components to provide added-value services. By integrating smart components, airports are being exposed to a larger attack surface and new attack vectors. Self-services such as web or mobile check-in, self check-in/tagging/back drop/boarding, etc. should be strengthened to make airport processes smarter, and technologies such as automatic immigration, smart security search, and automatic AI-based baggage search should be applied. In this paper, we describe the necessity and importance of smart airports and next generation security screening technology. Further, we describe a walk through-type smart security screening system.

• IMMUNE NETWORK
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• 제16권4호
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• pp.219-232
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• 2016

Production of high affinity antibodies for antigens is a critical component for the immune system to fight off infectious pathogens. However, it could be detrimental to our body when the antigens that B cells recognize are of self-origin. Follicular helper T, or Tfh, cells are required for the generation of germinal center reactions, where high affinity antibody-producing B cells and memory B cells predominantly develop. As such, Tfh cells are considered as targets to prevent B cells from producing high affinity antibodies against self-antigens, when high affinity autoantibodies are responsible for immunopathologies in autoimmune disorders. This review article provides an overview of current understanding of Tfh cells and discusses it in the context of animal models of autoimmune diseases and allograft rejections for generation of novel therapeutic interventions.

• International Journal of Advanced Culture Technology
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• 제12권1호
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• pp.26-33
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• 2024

With the start of COVID-19 in 2020, the MBTI test became popular among Korean young generation and then developed into a nationwide hot topic. This paper aims to investigate the characteristics of the MBTI popularity in Korea and the public opinions toward this phenomenon. With the analysis of the reports contents, 231 news reports related to MBTI were selected from KINDS (Korea Integrated News Database System) as research samples. The general attitude of the media towards MBTI tests and the reasons for the formation of positive and negative evaluations will be discussed from three perspectives: media attention, media attitudes and cognitive sources. The research finds that the increasing interest in MBTI among the younger generation in Korea is driven by a post-epidemic desire for self-exploration, emotional planning, and online group affiliation. MBTI has gained quasi-scientific status, similar to horoscopes, influenced by celebrities and a substantial fan base in online communication. While widely used for entertainment and social currency, there are concerns that extensive labeling may unconsciously impact individuals' self-perception and hinder the development of a holistic and objective cognitive framework.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2009년도 춘계학술대회 논문집
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• pp.361-364
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• 2009

KEPRI has studied planar type SOFC stacks using anode-supported single cells and kW class co-generation systems for residential power generation. A 1kW class SOFC system consisted of a hot box part, a cold BOP part and a water reservoir. A hot box part contains a SOFC stack made up of 48 cells with $10{\times}10cm^2$ area and ferritic stainless steel interconnectors, a fuel reformer, a catalytic combustor and heat exchangers. Thermal management and insulation system were especially designed for self-sustainable operation. A cold BOP part was composed of blowers, pumps, a water trap and system control units. When a 1kW class SOFC system was operated at $750^{\circ}C$ with hydrogen, the stack power was 1.2kW at 30 A and 1.6kW at 50A. Turning off an electric furnace, the SOFC system was operated using hydrogen and city gas without any external heat source. Under self-sustainable operation conditions, the stack power was about 1.3kW with hydrogen and 1.2kW with city gas respectively. The system also recuperated heat of about 1.1kW by making hot water. Recently KEPRI developed stacks using $15{\times}15cm^2$ cells and tested them. KEPRI will develop a 5 kW class CHP system using $15{\times}15cm^2$ stacks by 2010.

• 융합보안논문지
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• 제22권1호
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• pp.149-158
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• 2022

해병대는 1949년 4월 15일에 진해 덕산 비행장에서 창설되었다. 6.25전쟁과 월남 전쟁에서 싸우면 반드시 이겨 국민들로부터 사랑과 신뢰를 받았다. 강한 전투력은 선진병영문화가 조성 될 때 가능한 것이다. 오늘날 신세대 장병들은 자기중심적이고 개인주의적 성향이 강하다. 해병대 간부들은 신세대 장병들의 특성을 잘 이해하고 그들의 특성을 살릴 수 있도록 창의적인 리더십 개발에 노력해 할 것이다. 또한 4 해병대 간부들은 차 산업혁명과 더불어 첨단 과학기술이 발달함에 따라 간부들의 전문적 전술지식습득과 자기개발을 위해 부단히 힘써야 할 것이다. 따라서 해병대 간부들은 신세대 장병들의 특성을 이해하여 리더십을 발휘함으로써 국민에게 신뢰받는 강군이 되도록 최선의 노력을 해야 할 것이다.

• 디지털융복합연구
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• 제15권10호
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• pp.19-29
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• 2017

본 연구는 베이비부머세대의 유형별 삶의 만족에 영향을 미치는 다차원적 요인을 규명하자고 하였다. 분석대상은 한국복지패널(10차년도) 응답자 중 1955년부터 1963년에 태어난 베이비부머세대 가구주 1,895명이었다. 베이비부머세대를 유형화하는데 활용한 기준은 성(gender), 소득지위, 종사상 지위로 남성과 여성 각각 4가지 유형으로 분류하였다. 남성 베이비부머세대의 삶의 만족에 대해 남성IV유형(B=.074, t=1.992, p<.05), 건강상태(B=.233, t=7.268, p<.001), 가구소득(B=.174, t=4.476, p<.001), 우울(B=-.182, t=-5.242, p<.001), 자아존중감(B=.255, t=7.027, p<.001), 신뢰(B=.064, t=2.036, p<.05) 등이 유의미한 영향을 미치는 것으로 분석되었다. 여성베이비부머세대의 삶의 만족에 대해 여성IV유형(B=.100, t=2.598, p<.05), 건강상태(B=.239, t=6.790, p<.001), 우울(B=-.181, t=-5.142, p<.001), 자아존중감(B=.320, t=8.600, p<.001) 등이 유의미한 영향을 미치는 것으로 분석되었다.