• 제목/요약/키워드: local change

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지역적 $x-^{2}$-테스트를 이용한 장면전환검출 기법 (Scene Change Detection Using Local $x-^{2}-Test$)

  • 김영례;이양원
    • 한국컴퓨터정보학회논문지
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    • 제11권3호
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    • pp.193-201
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    • 2006
  • 본 논문에서는 급진적 장면전환부터 점진적 장면전환까지 모두 검출할 수 있는 방법을 제안한다. 이 방법은 지역적 $X^{2}$-테스트로서 기존의 컬러 히스토그램과 $X^{2}$-테스트를 결합한 방법이다. 본 논문을 위하여 기존의 히스토그램 기반 알고리즘과 비교하여 좋은 성능을 보여주는 $X^{2}$-테스트를 변형하였고. 컬러 값의 세분화 작업에 따른 검출효과를 높이기 위하여 명암도 등급에 따른 가중치를 적용한 지역적 $X^{2}$-테스트를 이용하였다. 이 방법은 복잡하고 다양한 시세계의 영상 변화를 가장 일반적이고 표준화된 방법으로 분석하고 분할하며 표현할 수 있는 방법이다. 기존의 $X^{2}$-테스트와 제안된 지역적 $X^{2}$-테스트 방법의 비교는 실험을 통해 입증되었다.

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코로나19 발생 후 지역농산물 이용 간편식에 대한 시장 이슈 변화: 온라인 빅데이터의 텍스트마이닝 (Change in Market Issues on HMR (Home Meal Replacements) Using Local Foods after the COVID-19 Outbreak: Text Mining of Online Big Data)

  • 주유정;변우진;윤지현
    • 한국식생활문화학회지
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    • 제38권1호
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    • pp.1-14
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    • 2023
  • This study was conducted to explore the change in the market issues on HMR (Home Meal Replacements) using local foods after the COVID-19 outbreak. Online text data were collected from internet news, social media posts, and web documents before (from January 2016 to December 2019) and after (from January 2020 to November 2022) the COVID-19 outbreak. TF-IDF analysis showed that 'Trend', 'Market', 'Consumption', and 'Food service industry' were the major keywords before the COVID-19 outbreak, whereas 'Wanju-gun', 'Distribution', 'Development', and 'Meal-kit' were main keywords after the COVID-19 outbreak. The results of topic modeling analysis and categorization showed that after the COVID-19 outbreak, the 'Market' category included 'Non-face-to-face market' instead of 'Event,' and 'Delivery' instead of 'Distribution'. In the 'Product' category, 'Marketing' was included instead of 'Trend'. Additionally, in the 'Support' category, 'Start-up' and 'School food service' appeared as new topics after the COVID-19 outbreak. In conclusion, this study showed that meaningful change had occurred in market issues on HMR using local foods after the COVID-19 outbreak. Therefore, governments should take advantage of such market opportunity by implementing policy and programs to promote the development and marketing of HMR using local foods.

일본 임차가구의 주거비부담능력 변화와 정책적 함의 (The Change in the Housing Affordability of Japanese Tenants and the Policy Implication)

  • 남원석
    • 한국주거학회논문집
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    • 제22권4호
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    • pp.23-32
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    • 2011
  • The change in the Japanese rental housing policy since the 1990s appeared as a reduction in the role of central government, an expansion in the local government's discretion, and an increase in the dependence on the housing market. As a result, the supply of new public rental housing decreased drastically and the rent regulation was eased. This study is designed to evaluate the validity of the policy change through an analysis of the change in housing affordability of tenants during the period of 1983~2008. The analysis showed that the housing affordability and the accessibility to the housing market by tenants had been improved, confirming that if the public rental housing stock was properly used, the housing needs of the low-income tenants would be met without new supply. Therefore, it appeared that the change in the Japanese rental housing policy may have a certain amount of validity. However, the study pointed out that the validity of the policy change must be limited as the future risk factors such as the possibility of residualisation of public rental housing and the increase of poor households according to job insecurity were not well considered. Accordingly, in conclusion this study suggests that new policy instruments should be developed at central government-level, such as offering incentives for local governments and establishing a housing allowance etc.

LCCGIS를 활용한 취약성 평가방법의 개선 (Improvement of Vulnerability Assessment to Climate Change using LCCGIS)

  • 김영수;이승훈
    • 한국기후변화학회지
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    • 제5권2호
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    • pp.165-178
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    • 2014
  • 기후변화에 대처하기 위하여 2015년부터 국가 및 광역지자체와 더불어 기초지자체에서도 기후변화 적응대책을 의무적으로 수립하여야 한다. 적응대책을 수립하기 위해 우선적으로 취약성 분석이 선행되어야 하며, 원활한 취약성 평가를 위하여 취약성 평가도구인 LCCGIS를 개발하고 보급하였다. 현재 대부분의 기초지자체에서는 LCCGIS를 적극적으로 활용하고 있으나, LCCGIS의 경우, 대부분의 평가지표의 값이 동일한 값이 적용되고 있어 평가결과의 편이가 상당하다. 본 연구에서는 LCCGIS를 최대한 활용하여 취약성 평가 결과를 조금이라도 지역적 여건을 반영한 결과로 도출할 수 있는 방법으로, 우선적으로 해당 지자체에서 확보 가능한 읍면동 자료를 확보하고, 다음으로 미확보된 지표에 대해서는 최대한 유사성을 가진 해당기초지자체의 읍면동 자료로 대체하는 방법을 소개하였다. 취약성 평가는 향후 일어날지도 모르는 상황에 어느 정도 취약할 것인지를 평가해야 하기 때문에, 연구자의 주관적인 견해가 포함될 우려가 상당히 많으므로, 최대한 객관적인 지표의 선정, 현재 확보할 수 있는 자료 수준 파악, 지역의 여건에 따라 지표내용의 변경 등에 있어서 객관성을 유지하고자 노력할 필요가 있다. 결론적으로 보완된 취약성평가 결과는 기후변화적응 대책을 수립하기 위한 중요한 선행과제로서, 본 연구의 결과는 향후 LCCGIS를 활용한 취약성 평가 결과의 신뢰성을 제고하고, 지역적 특성이 반영된 기후변화적응 세부시행계획의 수립이 이루어지도록 방향을 설정하는데 기여할 것으로 기대된다.

농촌 청소년 국제교류 지원체제 강화방안에 관한 연구 (A Study on Institution Strengthening for International Youth Exchange in Rural Area)

  • 김진숙;김명희;최병익
    • 농촌지도와개발
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    • 제11권2호
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    • pp.241-250
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    • 2004
  • This study was carried out to strengthen institution of international youth change in rural area. References, in the field of international cooperation international youth exchange and youth's volunteer service were reviewed. Considering rural situation, poor human resources in terms of foreign languages and globalization are major problems for international youth exchange. Such problems as poor network among relevant organizations for international youth change, low level of rural internationalization and lacking of development plan for exchange program were pointed out. For effective international youth exchange, the following strategies were suggested : 1) networking among youth, local government, industries and community, 2) youth education for global citizenship, 3) globalization of local industries, local government, and rural community, et.c.

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Laminar Convective Heat Transfer from a Horizontal Flat Plate of Phase Change Material Slurry Flow

  • Kim Myoung-Jun
    • Journal of Advanced Marine Engineering and Technology
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    • 제29권7호
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    • pp.779-784
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    • 2005
  • This paper presents the theory of similarity transformations applied to the momentum and energy equations for laminar, forced, external boundary layer flow over a horizontal flat plate which leads to a set of non-linear, ordinary differential equations of phase change material slurry(PCM Slurry). The momentum and energy equation set numerically to obtain the non-dimensional velocity and temperature profiles in a laminar boundary layer are solved. The heat transfer characteristics of PCM slurry was numerically investigated with similar method. It is clarified that the similar solution method of Newtonian fluid can be used reasonably this type of PCM slurry which has low concentration. The data of local wall heat flux and convective heat transfer coefficient of PCM slurry are higher than those of water more than 150$\~$200$\%$, approximately.

현행 교육감 선거 및 교육상임위원회제도 진단 및 개선연구 (A Study on the Diagnosis and Improvement of Present Superintendent Election and Education Standing Committee System)

  • 주철안
    • 수산해양교육연구
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    • 제26권1호
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    • pp.22-33
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    • 2014
  • This study is to diagnose the present superintendent election and education standing committee system for improvement based upon Constitutional values of local education system. The findings are the followings. To improve the election system of superintendent it is recommended to maintain present election system rather than change it drastically since the present system ensure relatively more autonomy, expertise, and political neutrality of local education system. However, the qualification such as years of educational experiences of superintendent candidates need to be restored. Regarding education standing committee it suggest that all or at least 2/3 members need to be educational representatives rather than general representatives. For superintendent as well as education standing committee election, it needs to elaborate the vote ballet such as change of candidates name order by voting place to reduce its effects to election results. It also needs to strengthen public management of election such as expenses and TV forums among candidates.

Annealing Effect of Local Anisotropy Field in Amorphous Co66Fe4Ni1B14Si15 Ribbon

  • Kim, C.G.;Jeong, M.H.;Jeong, M.H.;Yoon, S.S.;Yu, S.C.
    • Journal of Magnetics
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    • 제3권4호
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    • pp.123-126
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    • 1998
  • The magneto-impedance (MI) has been measured in the annealed Co66Fe4Ni1B14Si15 amorphous ribbon for the evaluation of anisotropy field. MI at the frequency of 10 MHz is related to the transverse permeability from rotational magnetization depending on the local anisotropy field. MI varies sensitively with the annealing temperature, reflecting the change of anisotropy field distribution. The local anisotropy fields evaluated from MI Profiles are discussed in terms of the magnetic softness and microstructural change by the annealing.

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지리산 개서어나무림에서의 12년간 지역기후의 변화에 따른 연간 종자생산량의 변동 (Twelve Years Changes in Local climate Factors and Annual fluctuations of Seed Production of the Carpinus tschonoskii Forest in Mt. jiri in Southern Korea)

  • 임영득;홍선기
    • The Korean Journal of Ecology
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    • 제21권6호
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    • pp.809-814
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    • 1998
  • Changes of annual seed production related to climate change were studied for 12 years in Piagol, a riparian valley in Mt. Jiri. Sixty-four seed traps (sized 0.5 ${\times}$ 0.5 $m^{2}$) were set up on the forest floor of surveyed area. Seeds were collected from these traps at an interval of 15 days from September to November since 1984. Vegetation of the study area was mainly consisted of the naturally regenerated Carpinus tschonoskii in the tree layer. Acer mono, Quercus serrata, Carpinus laxiflora and Symplocos chinensis also appeared in the same layer. Maximum production occurred in 1984 and 1994. As a result of comparing seed production with local climate factors for 12 years, seed productivity and the year of maximum production of Carpinus forest were merely related with precipitation, air temperature and duration of sunshine among local climate factors. Duration of sunshine was, however, not contributed to periodically high productivity of seed of riparian valley carpinus forest.

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Study on the relationship between trust and organizational performance in local administrative organization- Focused on the local administrative organizations in Gangwondo-

  • Kim, Sun-Ok;Park, Sung-Yong;Lee, Hee-Choon
    • Journal of the Korean Data and Information Science Society
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    • 제21권5호
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    • pp.983-997
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    • 2010
  • This study is to explore the relationship between trust in local administrative organization and organizational performance. Local administrative organizations provide the citizens with administrative services. Heightening the organizational performance contributes the citizens' happiness and the stream of times through organizations' change. To provide high quality of administrative service to citizens, trust in organizations is more important than any other capital. The improvement of organizational performance needs through this social capital. Factors about trust variables and organizational performance variables are extracted through the theoretical discussions. To do the research, public servants in 7 local administrative organizations of Gangwondo were asked to do the survey about how trust in organizations affects organizationa performances. The results explain that trust variables are related to organizational performance, and the local administrative organization which is high in trust is high in organizational performance. Trust in local administrative organizations improves the organizational performance internally and the organization will obtain trust from the citizens externally.