• Title/Summary/Keyword: Weak Classification

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SAR Image Processing Using Wavelet-based Sigma Filter and Edgemap (웨이브렛 기반 시그마 필터와 에지맵을 이용한 SAR 영상처리)

  • Go, Gi-Young;Park, Cheol-Woo
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.9 no.6
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    • pp.155-161
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    • 2009
  • Any classification process using SAR images presupposes the reduction of multiplicative speckle noise, since the variations caused by speckle make it extremely difficult to distinguish between neighboring classes within the feature space. This paper focus an argument of effective filter for preserving the weak boundaries by using the proposed method. To reduce speckle noise without blurring the edges of reconstructed image use wavelet-based sigma filter. As a result, the edge information of reconstructed image reduce blurring. Simulation results show that proposed method gives a better subjective quality than conventional methods for the speckle noise.

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Analysis of Elastic Behavior of Composite Geomaterials Using Homogenization Theory (균질화법을 이용한 복합지반물질의 역학적 특성 해석)

  • Seo, Yong-Seok;Yim, Sung-Bin;Baek, Yong;Kwon, O-Il
    • Proceedings of the Korean Geotechical Society Conference
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    • 2006.03a
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    • pp.752-759
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    • 2006
  • Conglomerates and core-stones are the typical composite geomaterials that are composed of a weak matrix and a strong pebble part. In general, we couldn't analyze the composite geomaterials by using emperical rock classification methods. In the study, a series of analyses of elastic behavior of composite geomaterials are carried out by using homogenization theory. 45-case models are made with considering 3 kind of factors such as gravel content, size and strength of matrix. Those are applicable to various composite geomaterials of conglomerates and core-stones. The size of analysis model is large enough to exceed REV.

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A Study on the Classification of Adjectives for Psychological Evaluation of Sounds (음의 심리평가를 위한 어휘의 유형화에 관한 연구)

  • 김선우;장길수;정광용;한명호
    • Journal of KSNVE
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    • v.3 no.4
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    • pp.361-371
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    • 1993
  • A psychological experiment is conducted by using the method of selected description to find out appropriate terms for expressing the attributes of sounds. It is true that the term is an important clue to estimate the sensation or emotion of sounds even though it does not directly express them. On the basis of the results, it is found in the subjective impression that adjectives are classified into 8 types of group: "pleasant and bright", "weak", "mild and beautiful", "shocking", "unpleasant", powerful", "dark", and "dull" feeling. Also, it is found that "loud", "noisy" and "annoying" terms have the meaning of "strong, powerful and magnificant", "metallic and clamorous", and "unpleasant and unpleasing" feeling as a meaning Korean language respectively.ot;, "metallic and clamorous", and "unpleasant and unpleasing" feeling as a meaning Korean language respectively.nguage respectively.

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Nonlinear Anisotropic Filtering with Considering of Various Structures in Magnetic Resonance Imaging (자기공명영상에서 다양한 구조들을 고려한 비선형 이방성 필터링)

  • Song Young-Chul
    • The Transactions of the Korean Institute of Electrical Engineers D
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    • v.52 no.3
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    • pp.148-155
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    • 2003
  • In this paper, a nonlinear anisotropic filtering method without the loss of important information happened due to the repeated filtering in magnetic resonance images is proposed. First of all original images are divided into four regions, e.g., SPR(Strong Plain Region), EPR(Easy Plain Region), SER(Strong Edge Region), and EER(Easy Edge Region). An optimal template among multiple templates is selected, then the nonlinear anisotropic filtering based on the template is applied in pixel by pixel basis. In the proposed algorithm, filtering strength of EER containing important information is adjusted very weak and filtering strength for remaining regions is also adjusted according to the degree of the importance. In spite of repeated filtering, resulting images by the proposed method could still preserve anatomy information of original images without any degradation. Compared to the existing nonlinear anisotropic filtering, the proposed filtering method with multiple templates provides higher reliability for filtered images.

Present and political tasks of Advanced Practice Nurse in Korea (국내 전문간호사제도의 현황과 정책과제)

  • Kim, Kyung-Sook;Kim, Mi-Won
    • Perspectives in Nursing Science
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    • v.6 no.1
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    • pp.39-53
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    • 2009
  • The purpose of this study is to grasp the present system of Advanced Practice Nurse(APN) and to suggest strategies for enhancing the recognition of APNs institutionally in Korea. We searched and reviewed literature and materials about the APN development process and present situation and related laws. We recognized that there were many kinds of problems in the APN system of Korea: a weak support from health care system, obscured classification of APN's services, confusion of qualifications, and lack of compensation from the national health insurance system. We should, therefore, identity the list of Korean APN's services and provide further studies about patient's outcome cared by APNs. Also, there is a need to create a demand for APNs to keep the quality of services guaranteed by APN. APN system must be established to progress forward in order to provide good benefits for the people.

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APPLICATIONS OF NEURO-FUZZY TECHNIQUES TO COLOR IMAGE PROCESSINGS

  • Kurosawa, Masa-Akl;Gotoh, Kel-Lchl;Takagi, Tshiyukl;Nakanishi, Shohachiro
    • Proceedings of the Korean Institute of Intelligent Systems Conference
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    • 1993.06a
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    • pp.960-963
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    • 1993
  • We focus our attention on grading of table meat in accordance with the standard of Japan Meat Grading Association, and construct a beef grading system by image processing. For image processing of beef grading, it needs some techniques such as a shading correction, separation of color image data, and classification of color image data into some grades, for the system construction. However, there are various kinds of weak points in usually used methods for these techniques. Then the authors propose and introduce new approaches using Neural networks and fuzzy inference for the techniques above mentioned, which is very convenient and ensure the high precision.

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Distance Sensitive AdaBoost using Distance Weight Function

  • Lee, Won-Ju;Cheon, Min-Kyu;Hyun, Chang-Ho;Park, Mi-Gnon
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.12 no.2
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    • pp.143-148
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    • 2012
  • This paper proposes a new method to improve performance of AdaBoost by using a distance weight function to increase the accuracy of its machine learning processes. The proposed distance weight algorithm improves classification in areas where the original binary classifier is weak. This paper derives the new algorithm's optimal solution, and it demonstrates how classifier accuracy can be improved using the proposed Distance Sensitive AdaBoost in a simulation experiment of pedestrian detection.

A Study on Medical Records of Jeon Suk-hee, Dalseong's Uisaeng of Japanese Occupation (일제강점기 달성의생 전석희의 진료기록 연구)

  • Park, Hun-Pyeong
    • The Journal of Korean Medical History
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    • v.32 no.2
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    • pp.71-78
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    • 2019
  • Jeon Suk-hee worked as permanent licensed Uisaeng (medical cadet) in Dalseong the Japanese occupation. The his newly discovered medical records were analyzed for the actual medical aspects of local Uisaeng. This article examined the medical view and treatment method of Jeon Suk-hee through the analysis of medical records, reveals facts which include : 1) The medical treatment was based on korean medical classification and treatment. This, along with the case of Cheongkang Kim Young-hoon, is an example of the preservation of traditional Korean medicine during the Japanese colonial period. 2) There is little effect of Shanghanlun (Treatise on Cold Damage). One side of Joseon medicine, which had a weak tradition of Shanghan, is revealed. 3) It did not simply follow the existing prescription of korean medicine's book. Examples include use of Cheongsin-san and Jeongjin-tang, which cannot be found in existing prescriptions.

A Study on Revision Direction of Korean Food Composition Table Through International Comparison (국제비교를 통한 우리나라 식품성분표의 개정방향에 대한 연구)

  • 김은영
    • Journal of Nutrition and Health
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    • v.27 no.2
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    • pp.192-206
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    • 1994
  • This study was conducted to find out the weak points of present Korean food composition table, so that to suggest the revision direction. Korean food composition table in Appendix of Recommended Dietary Allowances for Korean, 5th edition, was analyzed by comparing with 6 other food composition tables such as one other Korean food composition table, and those of Japan(two), U.S.A., East Asia and Near East. The content analysis was applied as the method of this study. As result, many drawbacks like classification of food components, etc. were pointed out. The best solution to improve these drawbacks in present food composition table is establishing on organization entirely in charge of food composition table. In this way the organization can carry out food analysis systematically and continuously. Then new food items can be added, old food items be eliminated based upon people's food consumption pattern change. Also we need to analyze our own foods consumed by our people instead of borrowing the other country's data.

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Site characteristics and classification of seismic stations based on observed earthquake data (지진관측 자료를 이용한 국내 지진관측소의 지반특성 분류)

  • 박동희;연관희;장천중
    • Proceedings of the Earthquake Engineering Society of Korea Conference
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    • 2003.03a
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    • pp.61-68
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    • 2003
  • The H/V ratio (Horizontal to Vertical spectral ratio) has been used to infer site amplification without previous knowledge of near-surface geology and in fact may provide useful general site condition information. This method is used to classify the site characteristics of seismic stations in Korea by comparison with known H/V ratios representative of various sites all over the world. In addition, differences between horizontal and vertical kappa values were evaluated for each seismic stations by comparing WV ratio and Weak Motion amplification derived from inversion of stochastic ground motion parameters and were used as index to quantitatively classify the site characteristics.

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