• 제목/요약/키워드: Comparative Evaluation

검색결과 2,170건 처리시간 0.036초

A Comparative Study on the Spatial Statistical Models for the Estimation of Population Distribution

  • Oh, Doo-Ri;Hwang, Chul Sue
    • 한국측량학회지
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    • 제33권3호
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    • pp.145-153
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    • 2015
  • This study aims to accurately estimate population distribution more specifically than administrative unites using a RK (Regression-Kriging) model. The RK model is the areal interpolation technique that involves linear regression and the Kriging model. In order to estimate a population’s distribution using a sample region, four different models were used, namely; a regression model, RK model, OK (Ordinary Kriging) model and CK (Co-Kriging) model. The results were then compared with each other. Evaluation of the accuracy and validity of evaluation analysis results were the basis RMSE (Root Mean Square Error), MAE (Mean Absolute Error), G statistic and correlation coefficient (ρ). In the sample regions, every statistic value of the RK model showed better results than other models. The results of this comparative study will be useful to estimate a population distribution of the metropolitan areas with high population density

Advanced Information Security Management Evaluation System

  • Jo, Hea-Suk;Kim, Seung-Joo;Won, Dong-Ho
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제5권6호
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    • pp.1192-1213
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    • 2011
  • Information security management systems (ISMSs) are used to manage information about their customers and themselves by governments or business organizations following advances in e-commerce, open networks, mobile networks, and Internet banking. This paper explains the existing ISMSs and presents a comparative analysis. The discussion deals with different types of ISMSs. We addressed issues within the existing ISMSs via analysis. Based on these analyses, then we proposes the development of an information security management evaluation system (ISMES). The method can be applied by a self-evaluation of the organization and an evaluation of the organization by the evaluation committee. The contribution of this study enables an organization to refer to and improve its information security levels. The case study can also provide a business organization with an easy method to build ISMS and the reduce cost of information security evaluation.

가공식품의 나트륨함량표시 개선을 위한 소비자 인식도 조사 (Consumer Perception Survey for the Improvement of Nutrition Labeling (Nutrition Comparative Claim) on Sodium Content)

  • 강은진;이화정;황경미;구용의;김건희
    • 한국식생활문화학회지
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    • 제32권3호
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    • pp.244-257
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    • 2017
  • Nutrition labeling can provide information in order for people to select products suitable for their own health, and sodium content labeling for processed foods is important since sodium is one of the main causes of cardiac diseases. This study had carried out to propose the desirable sodium content labeling by conducting surveys on the awareness of sodium content in processed foods, understanding of sodium content labeling, and requirements for new sodium comparative claims. The survey period was from 12th of September, 2016 through the 24th, during which a self-administered questionnaire survey was given to 1,003 persons through demographic quota sampling by age and region. As a result of the survey, 66.0% of respondents assuring nutrition labeling answered they check sodium content labeling, whereas 83.2% were aware of excessive intake of sodium having a negative effect on health. Exactly 49.9% of respondents answered that the current system for nutrition labeling on processed foods does not help one to understand the content of sodium, whereas 72.9% answered they wanted to compare sodium contents with those of other products when buying or taking processed foods. As 92.5% cited the importance of sodium comparative claims made by processed foods, preparation of a new system for food labeling should be considered by which consumers can easily compare sodium contents with those of other similar products.

탄소 저장량 감시에서 배수구역과 행정구역의 비교 평가 - 금강산에 대한 UN-REDD 대응 차원에서 - (Comparative Evaluation between Administrative and Watershed Boundary in Carbon Sequestration Monitoring - Towards UN-REDD for Mt. Geum-gang of North Korea -)

  • 김준우;엄정섭
    • 환경영향평가
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    • 제22권5호
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    • pp.439-454
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    • 2013
  • UN-REDD (United Nations programme on Reducing Emissions from Deforestation and forest Degradation) is currently being emerged as one of important mechanism to reduce carbon dioxide in relation to the deforestation. Although administrative boundary has already gained world-wide recognition as a typical method of monitoring unit in the process of GHG (Greenhouse Gas) reduction project, this approach did not provide a realistic evidence in the carbon sequestering monitoring in terms of UN-REDD; the meaningful comparison of land use patterns among watershed boundaries, interpretation for distribution trends of carbon density, calculation of opportunity cost, leakage management, etc. This research proposes a comparative evaluation framework in a more objective and quantitative way for carbon sequestering monitoring between administrative and watershed boundary approaches. Mt. Geumgang of North Korea was selected as a survey objective and an exhaustive and realistic comparison of carbon sequestration between the two approaches was conducted, based on change detection using TM satellite images. It was possible for drainage boundary approach to identify more detailed area-wide patterns of carbon distribution than traditional administrative one, such as estimations of state and trends, including historical trends, of land use / land cover and carbon density in the Mt. Geumgang. The distinctive changing trends in terms of carbon sequestration were specifically identified over the watershed boundary from 4.0% to 34.8% while less than 1% difference was observed in the administrative boundaries, which were resulting in almost 21-22%. It is anticipated that this research output could be used as a valuable reference to support more scientific and objective decision-making in introducing watershed boundary as carbon sequestering monitoring unit.

공간유형별 농촌경관 평가 및 비교 분석 - 전북 고창 선동권역의 주민과 방문객을 대상으로 - (An Evaluation of Rural Landscape and Comparative Analysis in Accordance with Space Types : Focused on Residents and Visitors of Seondong Region, Gochang-Gun, Jeollabuk-Do, Korea)

  • 백종인;반영운;우혜미;최나래
    • 농촌계획
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    • 제16권4호
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    • pp.1-11
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    • 2010
  • This study has intended to evaluate rural subjective landscape through participation of residents and visitors according to space types, and to perform comparative analysis of evaluation results between residents and visitors. This study has employed a survey method for which 58 residents of 8 villages within Seondong region at Gochang-gun and 70 visitors to Green Barley Field Festival in the target region have participated. 42 landscape view points were selected according to landscape scopes and space types, and then the preference was evaluated using landscape adjectives after showing pictures already taken for each landscape view point. This study has found the following results. First, whereas residents gave high points to natural landscape and artificial one at the historical culture areas in comparison with other landscape scopes, visitors gave them low points on the other hand. Second, visitors evaluated the cultivated area among space types of mixed landscapes with high value. Third, based on t-test for comparative analysis, the statistically significant differences of evaluation results appeared at 6 places among 8 natural landscapes, 3 places among 12 artificial landscapes, and 3 places among mixed landscapes.