• 조명전기설비학회논문지
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• 제20권7호
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• pp.58-64
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• 2006

최근 탈취, 탈색, 정수처리 및 배연가스의 정화에 많이 이용되고 있는 오존의 효과적인 발생에 많은 관심이 모아지고 있다. 전기 방전에 의한 오존 발생 방법 중 유전체 배리어 방전이 보다 낮은 전력을 소모하며, 또한 저전압 동작이 가능하여 가장 효과적인 것으로 생각되고 있다. 본 연구에서는 오존발생농도 및 에너지효율을 개선하기 위하여 알루미나 유전체 및 알루미나 유전체와 알루미나 비드를 충진한 무성방전관을 제작하여 무성방전특성을 연구하였다. 또한 오존발생특성을 무성방전특성과 연관하여 논하였으며, 특히 방전시 유전체에 축적되는 벽전하 및 소비전력특성의 관점에서 논하였다. 결과, 비드를 가진 방전관의 경우 축적되는 벽전하량은 비드가 없는 방전관에 비하여 약 2.5배 정도였으며, 발생되는 오존농도 및 에너지 수율 또한 개선되었다.

• 한국융합학회논문지
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• 제12권8호
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• pp.123-129
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• 2021

MZ세대는 상황에 따라 여러 가지 자아를 만들어 가는 멀티퍼소나 특징을 갖고 있으며 패션 스타일링 또한 각각의 퍼소나마다 다르게 표출한다. 이에 본 연구는 패션 쇼핑 앱에 멀티퍼소나 특성을 반영한 사용자 경험을 제공할 방안에 대해 연구하였다. 아이템과 컬러, 광고 위주의 추천 방식을 가진 기존 패션 쇼핑 앱은 MZ세대의 패션에 대한 고민을 해소하기에 어려운 실정이므로 이들의 특징을 적극적으로 활용할 방안이 필요하다. 이에 멀티퍼소나와 MZ세대의 개념과 특징을 조사하고, 선행연구를 통해 MZ세대의 패션 쇼핑 행태를 파악하였다. 또한 패션 쇼핑 앱에서 멀티퍼소나를 간접적으로 활용한 사례와 개선점을 분석하였다. 니즈 파악을 위한 사용자 인터뷰를 통해 4가지의 UX 요소를 도출하였고 기존의 패션 추천 틀을 벗어나 자신의 멀티퍼소나 캐릭터를 형성하여 쇼핑 경험을 제공하는 것이 패션 고민에 도움이 되고 색다른 경험을 가능케 하는 긍정적인 효과를 보였다.

• 통합자연과학논문집
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• 제16권4호
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• pp.139-145
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• 2023

Due to changes in the distribution system and increased demand for renewable energy, interest in technology to increase the limit capacity of distributed energy grid connection using grid flexible resources is also increasing. Recently, the distribution system system is changing due to the increase in distributed power from renewable energy, and as a result, problems with the limited capacity of the distribution system, such as waiting for renewable energy to connect and increased overload, are occurring. According to the power generation facility status report provided by the Korea Power Exchange, of the total power generation capacity of 134,020 MW as of 2021, power generation capacity through new and renewable energy facilities is 24,855 MW, accounting for approximately 19%, and among them, power generation through solar power accounts for a total portion of the total. It was analyzed that the proportion of solar power generation facilities was high, accounting for 75%. In the future, the proportion of new and renewable energy power generation facilities is expected to increase, and accordingly, an efficient operation plan for the distribution system is needed. Advanced country-type NWAs that can integrate the operation and management of load characteristics for each line of the distribution system, power distribution, regional characteristics, and economic feasibility of distributed power in order to improve distribution network use efficiency without expanding distribution facilities due to the expansion of renewable energy. An integrated operating system is needed. In this study, in order to improve the efficiency of distribution network use without expanding distribution facilities due to the expansion of renewable energy, we developed a method that can integrate the operation and management of load characteristics for each line of the distribution system, power distribution, regional characteristics, and economic feasibility of distributed power. We want to develop an integrated operation system for NWAs similar to that of advanced countries.

• KEPCO Journal on Electric Power and Energy
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• 제6권4호
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• pp.433-438
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• 2020

Accurate forecasting of wind power is important for grid operation. Wind power has intermittent and nonlinear characteristics, which increases the uncertainty in wind power generation. In order to accurately predict wind power generation with high uncertainty, it is necessary to analyze the factors affecting wind power generation. In this paper, 6 factors out of 11 are selected for more accurate wind power generation forecast. These are wind speed, sine value of wind direction, cosine value of wind direction, local pressure, ground temperature, and history data of wind power generated.

• 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.

• 한국태양에너지학회 논문집
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• 제39권2호
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• pp.33-43
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• 2019

In this study, reflecting long-term climate characteristics, we analyzed electricity generation and generation characteristics of 3kWp PV system, which was semi-integrated with air duct behind. Using PVsyst as a simulation analysis tool, we inputted "National reference standard weather data" of 16 regions as a typical climatic data. The result is summarized as follows: First, the national average annual electricity generation was 1,312 kWh/kWp (StDev, ${\sigma}=71$). It was most abundant in Mokpo with 1,434 kWh/kWp, which was average 21% greater than the lowest with 1,165 kWh/kWp in Seoul and 1,197 kWh/kWp in Jeju. National average daily generating time based on STC was 3.6 hours (${\sigma}=0.43$), and that of Mokpo and Seoul was 3.9 and 3.2 hours respectively. Second, Jeju showed the great difference of annual monthly generation by month (annual average = 99.7 kWh/kWp, ${\sigma}=25.5$), while Jinju showed the smallest difference (annual average = 115.5 kWh/kWp, ${\sigma}=10.6$). Generation in Jeju was at the largest in April with 132.2 kWh/kWp, which was 2.3 times greater than the lowest 55.2 kWh/kWp in January. However, generation in Jinju was at the largest in March with 129.3 kWh/kWp, which was only 1.3 times greater than the lowest 101.1 kWh/kWp in June. Third, the annual average PR was the highest in Incheon with 85.8% and the lowest in Jeju with 83.2%. PR of Mokpo was 84.3%, which was lower than that of national average.

• 한국연소학회:학술대회논문집
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• 한국연소학회 2002년도 제24회 KOSCO SYMPOSIUM 논문집
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• pp.247-251
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• 2002

• 스마트미디어저널
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• 제7권2호
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• pp.60-70
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• 2018

최근 고령 사회로의 진입으로 헬스케어 서비스의 수요가 확대되고 있다. 하지만 노후를 능동적으로 준비하는 뉴실버세대의 특성을 고려한 GUI연구는 아직 미비한 실정이다. 뉴실버세대는 일반적인 고령자들보다는 정보취득에 대한 거부감이 약하기는 하지만 40대 이하의 젊은 세대들과 정보습득능력의 차이를 보이고 있기 때문에 그들의 신체적, 심리적, 사회적 특성을 고려한 모바일 헬스케어 서비스의 GUI에 대한 연구가 시급하다. 따라서 본 연구의 목적은 미래 의료소비의 중심으로 떠오르고 있는 뉴실버세대가 모바일 헬스케어 서비스를 쉽게 사용할 수 있도록 하기 위한 GUI평가 가이드를 제안하는 데에 있다. 연구방법은 첫 번째, 문헌연구과 선행연구를 통해 뉴실버세대의 특성을 분석하여 모바일 헬스케어의현황을 파악하였고, 두 번째, 현재 모바일 헬스케어 어플리케이션의 각 분야에서 선호되는 시각구성요소를 분석하여 고령자의 특성에 맞게 모바일 GUI디자인의 사용성 평가 지표를 도출하였다. 세 번째, 도출된 평가 지표를 사용하여 휴리스틱(heuristic)방식을 통하여 57세부터 65세까지의 뉴실버세대 8명을 대상으로 사용성 평가를 진행하였다. 이 연구는 뉴실버세대 사용자의 특성에 맞춰 GUI가이드를 제안함으로써 사용성 향상에 기여하기를 기대하며 동시에 헬스케어 모바일 어플리케이션 개발에 대한 연구가 지속되어야 할 것으로 생각된다.

• 한국의류산업학회지
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• 제24권1호
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• pp.81-94
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• 2022

The purpose of this study is to analyze the trends of MZ generation's lifestyle-related research from 2010 to 2020. As a result of searching keywords such as MZ generation's and lifestyle using academic database search sites, a total of 218 cases were used as analysis data to conduct frequency and content analysis. First, research type was 74 dissertations(34.6%), 144 journals(65.4%). The study of MZ generation was relatively active in journals. Second, the current status of academic field was 85(39.7%) in the social field, followed by 66(30.8%) in the arts/physical education, 21(9.8%) in the complex studies, 16(7.5%) in education, 15(7.0%) in nature, 6(2.8%) in engineering, 4(1.9%) in humanities, 1(0.5%) in agriculture/marine. Third, the current status of MZ generation research topics is 54 social participations(25.3%), 35 fashion/beauty(16.3%), 31 social/organizational adaptations(14.5%), 25 cultural/leisure activities(11.7%), 24 design/development projects(11.2%), 21 economic/employment/job projects(9.8%), 11 educational/career/experiences(5.1%), 9 self-concepts(4.2%), 4 welfare services(1.9%). Fourth, the current status of MZ generation research methods was quantitative research(survey/experiment) 125(58.4%), qualitative research(depth interview/participant observation) 42(19.6%), theory/literature research 35(16.4%) and mixed research 12(5.6%). Fifth, the study on the lifestyle of the MZ generation was conducted in four cases, one in 2016, one in 2019, two in 2020. This study is meaningful in that it grasped the overall flow of data of information exchange that can share the research trends of the MZ generation and suggested the basic data on the direction of future research, the individual tendency, behavior, and lifestyle characteristics of the MZ generation.

• 대한전기학회논문지:전력기술부문A
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• 제54권8호
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• pp.418-428
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• 2005

In this paper, a new probabilistic generation modeling method which can address the characteristics of changed electricity industry is proposed. The major contribution of this paper can be captured in the development of a probabilistic generation modeling considering generator maintenance outage and in the classification of market demand into multiple demand clusters for the applications to electricity markets. Conventional forced outage rates of generators are conceptually combined with maintenance outage of generators and, consequently, effective outage rates of generators are newly defined in order to properly address the probabilistic characteristic of generation in electricity markets. Then, original market demands are classified into several distinct demand clusters, which are defined by the effective outage rates of generators and by the inherent characteristic of the original demand. We have found that generators have different effective outage rates values at each classified demand cluster, depending on the market situation. From this, therefore, it can be seen that electricity markets can also be classified into several groups which show similar patterns and that the fundamental characteristics of power systems can be more efficiently analyzed in electricity markets perspectives, for this classification can be widely applicable to other technical problems in power systems such as generation scheduling, power flow analysis, price forecasts, and so on.