• 제목/요약/키워드: Classifications

검색결과 994건 처리시간 0.026초

재난안전정보의 통합 관리를 위한 분류체계 현황분석 및 개선방안에 관한 연구 (A Study on the Analysis and Improvement of Classifications for Integrated Management of Disaster and Safety Information)

  • 박태연;한희정;김용;김수정
    • 한국비블리아학회지
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    • 제28권3호
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    • pp.125-150
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    • 2017
  • 본 연구는 국내 재난 안전 유관기관들이 사용하고 있는 재난안전정보 관련 분류체계의 현황 및 문제점을 파악하여 일원화된 재난안전정보 분류체계의 구축을 위한 기본 요구사항을 도출하는 것을 목적으로 한다. 이를 위하여 먼저 국내외 재난유형 분류체계를 살펴보았으며, 현재 국내 재난 유관기관에서 사용하고 있는 분류체계를 수집하여 분석하고, 실무자와의 면담을 진행하였다. 분석 결과, 향후 재난유형 분류체계 개발을 위하여 일관성, 망라성, 체계성, 및 한국형 재난에 대한 고려가 필요하다. 또한 재난안전정보 분류체계 개발을 위해서는 재난 및 안전관리 업무의 복잡성, 복합재난의 출현 등을 고려하여 패싯 분류체계의 적용을 제안하였다.

Three-dimensional analysis of impacted maxillary third molars: A cone-beam computed tomographic study of the position and depth of impaction

  • de Andrade, Priscila Ferreira;Silva, Jesca Neftali Nogueira;Sotto-Maior, Bruno Salles;Ribeiro, Cleide Gisele;Devito, Karina Lopes;Assis, Neuza Maria Souza Picorelli
    • Imaging Science in Dentistry
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    • 제47권3호
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    • pp.149-155
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    • 2017
  • Purpose: The classification of impacted maxillary third molars(IMTMs) facilitates interdisciplinary communication and helps estimate the degree of surgical difficulty. Thus, this study aimed to develop a 3-dimensional classification of the position and depth of impaction of IMTMs and to estimate their prevalence with respect to gender and age. Materials and Methods: This cross-sectional retrospective study analyzed images in sagittal and coronal cone-beam computed tomography (CBCT) sections of 300 maxillary third molars. The proposed classification was based on 3 criteria: buccolingual position (buccal, lingual, or central), mesial-distal position (mesioangular, vertical, or distoangular), and depth of impaction (low, medium, or high). CBCT images of IMTMs were classified, and the associations of the classifications with gender and age were examined using analysis of variance with the Scheffe post-hoc test. To determine the associations among the 3 classifications, the chi-square test was used (P<.05). Results: No significant association of the classifications with gender was observed. Age showed a significant relationship with depth of impaction (P=.0001) and mesial-distal position (P=.005). The most common positions were buccal(n=222), vertical(n=184), and low (n=124). Significant associations among the 3 tested classifications were observed. Conclusion: CBCT enabled the evaluation of IMTMs in a 3-dimensional format, and we developed a proposal for a new classification of the position and depth of impaction of IMTMs.

A Study on the Classifications and Symbolic Meanings of Vietnamese Traditional Patterns

  • Anh, Pham Ho Mai;Lee, Yonn-Soon
    • International Journal of Human Ecology
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    • 제9권1호
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    • pp.29-40
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    • 2008
  • This study clarified the classifications of Vietnamese traditional patterns and analyzed the symbolic meanings that reflect the emotional and cultural background of the Vietnamese. The type and symbolism of Vietnamese traditional patterns were analyzed through research on the history of Vietnamese costumes, the history of Vietnamese arts, the history of Vietnamese traditional culture, and a Vietnamese museum survey. The results of this study were as follows: 1. Animal patterns are diverse and include dragons, unicorns, tortoises, phoenixes, cranes, lions, bats, tigers, and buffalo patterns. 2. Dragon patterns are the most utilized pattern for practical purposes. They are often used in royal costumes, Vietnamese traditional dresses, mandarin boots, bamboo fans, silk, satin, ceramics, and other detailed decorations. 3. The patterns symbolized fortune that meant good luck and longevity so people can live long and happy. Then the symbolic meanings of patterns were followed by prosperity, nobleness, apotropism, prolificacy, and wealth. 4. Since the most of animal patterns have symbolic meanings of fortune and longevity, animal patterns can be utilized as the source of traditional patterns of design inspiration for the development of Vietnamese modern patterns and the application on Vietnamese fashion products.

Utilizing Principal Component Analysis in Unsupervised Classification Based on Remote Sensing Data

  • Lee, Byung-Gul;Kang, In-Joan
    • 한국환경과학회:학술대회논문집
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    • 한국환경과학회 2003년도 International Symposium on Clean Environment
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    • pp.33-36
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    • 2003
  • Principal component analysis (PCA) was used to improve image classification by the unsupervised classification techniques, the K-means. To do this, I selected a Landsat TM scene of Jeju Island, Korea and proposed two methods for PCA: unstandardized PCA (UPCA) and standardized PCA (SPCA). The estimated accuracy of the image classification of Jeju area was computed by error matrix. The error matrix was derived from three unsupervised classification methods. Error matrices indicated that classifications done on the first three principal components for UPCA and SPCA of the scene were more accurate than those done on the seven bands of TM data and that also the results of UPCA and SPCA were better than those of the raw Landsat TM data. The classification of TM data by the K-means algorithm was particularly poor at distinguishing different land covers on the island. From the classification results, we also found that the principal component based classifications had characteristics independent of the unsupervised techniques (numerical algorithms) while the TM data based classifications were very dependent upon the techniques. This means that PCA data has uniform characteristics for image classification that are less affected by choice of classification scheme. In the results, we also found that UPCA results are better than SPCA since UPCA has wider range of digital number of an image.

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Morphological and Molecular Classifications of Genus Pholis

  • Lee, Sung-Hoon;Jang, Yo-Soon;Baik, Chung-Boo;Han, Kyeong-Ho;Myung, Jung-Goo;Lee, Jin-Hee;Choi, Sang-Duk;Kim, Seon-Jae;Kim, Jong-Oh;Hwang, Jae-Ho
    • Animal cells and systems
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    • 제13권4호
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    • pp.453-460
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    • 2009
  • Morphological and molecular classifications were attempted in an effort to establish species-specific classifications of three species of the genus Pholis in Korea; these species were subjected to morphological and molecular methodologies using body measurements, RFLP, RAPD, and phylogenetic trees using the nucleotide sequences of mitochondrial 16S and 12S ribosomal DNAs, cytochrome c oxidase I, and cytochrome b. The data demonstrated that the three species of genus Pholis are distinct from each other, both morphologically and genetically.

Phenotypes of allergic diseases in children and their application in clinical situations

  • Lee, Eun;Hong, Soo-Jong
    • Clinical and Experimental Pediatrics
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    • 제62권9호
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    • pp.325-333
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    • 2019
  • Allergic diseases, including allergic rhinitis, asthma, and atopic dermatitis, are common heterogeneous diseases that encompass diverse phenotypes and different pathogeneses. Phenotype studies of allergic diseases can facilitate the identification of risk factors and their underlying pathophysiology, resulting in the application of more effective treatment, selection of better treatment responses, and prediction of prognosis for each phenotype. In the early phase of phenotype studies in allergic diseases, artificial classifications were usually performed based on clinical features, such as triggering factors or the presence of atopy, which can result in the biased classification of phenotypes and limit the characterization of heterogeneous allergic diseases. Subsequent phenotype studies have suggested more diverse phenotypes for each allergic disease using relatively unbiased statistical methods, such as cluster analysis or latent class analysis. The classifications of phenotypes in allergic diseases may overlap or be unstable over time due to their complex interactions with genetic and encountered environmental factors during the illness, which may affect the disease course and pathophysiology. In this review, diverse phenotype classifications of allergic diseases, including atopic dermatitis, asthma, and wheezing in children, allergic rhinitis, and atopy, are described. The review also discusses the applications of the results obtained from phenotype studies performed in other countries to Korean children. Consideration of changes in the characteristics of each phenotype over time in an individual's lifespan is needed in future studies.

대순진리회 신관념(神觀念)의 특성 (The perception of gods in Daesoonjinrihoe)

  • 윤용복
    • 대순사상논총
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    • 제21권
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    • pp.1-28
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    • 2013
  • The intention of this article is to check for the believers in Daesoonjinrihoe how to perceive the gods who they believe in. For that intention, I explained how the perception of gods in Daesoonjinrihoe is different from the perception of gods in other religions. To make a long story short, because of its polytheism the idea of god in Daesoonjinrihoe is different from monotheism such as Christianity, Islam. In addition, in spite of its polytheism it is different from other polytheism such as the religion in ancient India, especially rig-vedicreligion. In this article it is said that the believers in Daesoonjinrihoe have understood the distinction between Shin(神) and Shinmyung(神明). Nowadays Shin that has been used in Korea, China, Japan, is the word that was translated from English god. Therefore we need to reappraise the meaning of the word Shin. Anyway Shin that is being used in general means Shinmyung in Daesoonjinrihoe. Instead when they say the name of functional gods and the name to which the meaning of its origin affixed, the word Shin is used. Meanwhile, it has the advantage of classifying the ideas of god, but we can't explain all of them through the use of those classifications. I checked some classifications in this article and tried to apply the idea of gods in Daesoonjinrihoe. As a result, each classification has some critical points. There fore in this article I explained the distinguishing ideas of god in Daesoonjinrihoe from that in other religions, instead of the explaining fitted those classifications.

반응성애착장애아의 어머니-아동 관계 (MOTHER-CHILD RELATIONSHIP OF CHILDREN WITH REACTIVE ATTACHMENT DISORDER)

  • 신의진;이경숙;박숙경
    • Journal of the Korean Academy of Child and Adolescent Psychiatry
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    • 제8권1호
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    • pp.22-33
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    • 1997
  • 본 연구는 반응성 애착 장애 아동(Reactive Attachment Disorder, 이하 ‘RAD’)의 혼란된 부모-아동 관계를 애착이론의 입장에서 체계적으로 살펴보고자 하였다. 이를 위해 1994년 8월에서 1995년8월 사이 소아정신과에 내원한 RAD 아동과 어머니 20쌍과 비교집단으로 정상 아동과 어머니 20쌍을 대상으로, 아동에 대한 내적 실행 모델 면접(Working Model of Child Interview, 1986)과 낯선 상황 절차(Strange Situation Procedure, 1978), 부모-아동 상호작용 척도(Dyadic Parent-child Interaction Coding Scales, 1983)을 실시하여 어머니의 아동에 대한 내적 표상과 어머니의 내적 표상 유형과 아동의 애착 유형과의 관계, 내적 표상 유형에 따른 어머니-아동 상호작용 양상을 살펴보았다. 1) 대상 어머니들을 3가지 내적 표상 유형으로 분류해 본 결과, 비교 집단 어머니는 모두 균형된 표상으로 분류되었고 RAD 집단 어머니는 비개입된 표상(55%), 왜곡된 표상(45%)으로 분류되었다. 2) 어머니의 아동에 대한 내적 표상 유형은 아동의 애착 유형과 체계적으로 연관되었다. 균형된 표상의 어머니의 아동은 모두 안정 애착이었고 비개입된 표상 어머니의 82%는 그 아동이 불안/회피 애착으로 분류되었고 왜곡된 표상 어머니는 56%가 그 아동이 비조직/비일관 애착, 33%는 불안/저항 애착으로 분류되었다. 3) 어머니-아동 상호작용에서, 비개입된 표상의 어머니는 아동 중심 놀이에서 균형된 표상의 어머니에 비해 묘사적 진술, 반영적 진술, 묘사/반영적 질문을 적게 사용하였고 왜곡된 표상의 어머니는 균형된 표상의 어머니에 비해 직접 명령과 간접 명령을 많이 사용하였다. 장난감 정리하기 과제에서 비개입된 표상과 왜곡된 표상의 어머니는 균형된 표상의 어머니보다 직접명령, 간접명령을 더 많이 사용하였다. 위의 결과를 통해서 볼 때, 어머니의 아동에 대한 내적 실행 모델은 아동과의 애착 관계와 어머니-아동 상호작용에 중요한 요인으로서 혼란된 어머니-아동 관계를 이해하는데 효율적인 접근을 제공하며 아동에 대한 치료적 개입에 유용한 정보를 제공해 줄 것으로 생각된다.

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Design of High-Performance Unified Circuit for Linear and Non-Linear SVM Classifications

  • Kim, Soo-Jin;Lee, Seon-Young;Cho, Kyeong-Soon
    • JSTS:Journal of Semiconductor Technology and Science
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    • 제12권2호
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    • pp.162-167
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    • 2012
  • This paper describes the design of a high-performance unified SVM classifier circuit. The proposed circuit supports both linear and non-linear SVM classifications. In order to ensure efficient classification, a 48x96 or 64x64 sliding window with 20 window strides is used. We reduced the circuit size by sharing most of the resources required for both types of classification. We described the proposed unified SVM classifier circuit using the Verilog HDL and synthesized the gate-level circuit using 65nm standard cell library. The synthesized circuit consists of 661,261 gates, operates at the maximum operating frequency of 152 MHz and processes up to 33.8 640x480 image frames per second.