• 대한수학회지
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• 제39권2호
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• pp.163-191
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• 2002

We introduce Clapp-Puppe type generalized Lusternik-Schnirelmann (co)category in a Quillen model category. We establish some of their basic properties and give various characterizations of them. As the first application of these characterizations, we show that our generalized (co)category is invariant under Quillen modelization equivalences. In particular, generalized (co)category is invariant under Quillen modelization equivalences. In particular, generalized (co)category of spaces and simplicial sets coincide. Another application of these characterizations is to define and study rational cocategory. Various other applications are also given.

• Journal of the Korean Data and Information Science Society
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• 제19권3호
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• pp.735-749
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• 2008

This article suggests application of logit model for analysis of multicategory responses. Referring to the reference category, characteristic of each category is obtained from analysis of polytomous logit model. With National Pension data it is illustrated that application of logit model helps it possible to find significant factors which may not be found only with polytomous logit model. Application of the logit model is done by reducing the number of categories. Categories are grouped into the former and the latter group according to reference category. Extra finding of significant factor was possible from logistic regression analysis for the two groups after removing the reference category. It is expected that this application would be helpful for finding information and characteristics on ordered multicategory responses where the proportional odds model does not fit.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1992년도 한국자동제어학술회의논문집(국제학술편); KOEX, Seoul; 19-21 Oct. 1992
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• pp.514-519
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• 1992

To make an accurate retrieval of the proportion of each category among mixed pixels (Mixel's) of a remotely sensed imagery, a maximum likelihood estimation method of category proportion is proposed. In this method, the observed multispectral vector is considered as probability variables along with the approximation that the supervised data of each category can be characterized by normal distribution. The results show that this method can retrieve accurate proportion of each category among Mixel's. And a index that can estimate the degree of error in each category is proposed. AS one of the application of the proportion estimation, a method for image classification based on category proportion estimation is proposed. In this method all pixel in a remotely sensed imagery are assumed to be Mixel's, and are classified to most dominant category. Among the Mixel's, there exists unconfidential pixels which should be categorized as unclassified pixels. In order to discriminate them, two types of criteria, Chi square and AIC, are proposed for fitness test on pure pixel hypothesis. Experimental result with a simulated dataset show an usefulness of proposed classification criterion compared to the conventional maximum likelihood criterion and applicability of the fitness tests based on Chi square and AIC,

• 호남수학학술지
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• 제26권4호
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• pp.589-608
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• 2004

We investigate the multiplicity of the periodic solutions of the nonlinear wave equation with jumping nonlinearity. By category theory we prove that the jumping problem has at least 2k+1 solutions for the positive source term.

• Journal of information and communication convergence engineering
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• 제11권4호
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• pp.268-273
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• 2013

In this paper, we propose a document classification model using Web documents as a part of the training corpus in order to resolve the imbalance of the training corpus size per category. For the purpose of retrieving the Web documents closely related to each category, the proposed document classification model calculates the matching score between word features and each category, and generates a Web search query by combining the higher-ranked word features and the category title. Then, the proposed document classification model sends each combined query to the open application programming interface of the Web search engine, and receives the snippet results retrieved from the Web search engine. Finally, the proposed document classification model adds these snippet results as Web documents to the training corpus. Experimental results show that the method that considers the balance of the training corpus size per category exhibits better performance in some categories with small training sets.

• 한국IT서비스학회지
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• 제4권1호
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• pp.117-128
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• 2005

When we conduct development of a large-size SI project, it is highly necessary to utilize an appropriate application framework which helps to build a qualified software with high productivity in a short period of time. In this paper, we propose the architecture of a dynamically reconfigurable CBD application integration framework that has been used for developing large-scale e-business applications to achieve high development productivity and maintainability. This Integration framework can easily extend its functionalities, and dynamically change its configuration during run time according to the business category, such as applying interaction patterns among main components in software architecture, rules, policies, and environmental parameters. Dynamic reconfiguration has the feature to make applications be easily customized for changeable requirements. Through our application integration framework, huge sizes of contents can be managed according to the business category as well, by keeping configuration informations and huge volumes of source codes. In order to evaluate out application integration framework in terms of performance criteria, we present experimental results of throughputs from the framework by yielding dynamic configuration without any performance degradation.

• 한국의류학회지
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• 제24권2호
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• pp.214-225
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• 2000

The objective of this study was to investigate images of Korean traditional patterns. The subjects consisted of 369 male and 356 female undergraduate students. The experimental materials used in this study were 48 stimuli and questionnaires, composed of 7-point semantic differential scales of 23 bipolar adjectives. Twelve motifs selected from 3 groups of Korean patterns were used as motif stimuli. Twelve repeated patterns were constructed from them to be applied on a CAD-simulated dress. The data was analyzed by factor analysis, ANOVA, Duncan's multiple range test. The major findings were as follows: 1. Four dimensions were emerged accounting for the dimensional structure of the images of Korean traditional patterns. These dimensions were 'simplicity', 'quality', 'interest', and 'modernity' dimension. Among them, 'simplicity' and 'quality' were the major dimensions. 2. Category, interpretation type, composition type, and application object of motif had significant effects on the images of above-mentioned dimensions. The application object had a significant effect on 'simplicity' and 'modernity' image, and the composition type on 'quality' and 'interest' image.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 ITC-CSCC -3
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• pp.1855-1858
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• 2002

A number of MPLS ATM systems have been proposed to increase the access speed of current routers, which only support the best-effort service. However, the MPLS ATM systems have to support the so-called differential service, which discriminates the applications according to the service class because they do not be satisfied the Internet users who use diverse applications. In this paper, to support this differential service a detailed forwarding procedure based on a LSP control method and an application-based marking algorithm is suggested. The LSP control method establishes several different LSPs for each FEC according to the service class and the application-based marking algorithm chooses a proper differential service depending on the application category. Also, a design scheme of forwarding engine, which can be easily implemented with a minimum modification of existing MPLS ATM systems is proposed. And, the best simulation result of high priority application category is gained when the proposed forwarding algorithm is comparedwithexistingalgorithms.

• 환경정책연구
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• 제6권2호
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• pp.71-96
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• 2007

본 연구는 우리나라 보호지역의 특성을 반영하여 IUCN 카테고리 시스템 적용하기 위한 방안을 도출하였으며, 도출된 IUCN 카테고리 시스템을 소백산국립공원에 적용해 봄으로써 동 시스템의 적용가능성을 검토하였다. 우리나라 보호지역에 IUCN 카테고리 시스템 채택을 위해 고려해야 할 사항으로는 보호지역 관리목적에 있어 (1)원생지 보호 개념, (2)자원의 지속가능한 이용, (3)문화적 전통적 특성 유지 등에 대해서 우리나라 특성에 맞는 유연한 접근이 필요한 것으로 나타났다. 또한 용도지역 면적 및 용도지구별 행위규제 내용에 대한 고려, IUCN 카테고리 별 이용유형의 상대적 비교(탐방, 자원이용, 거주), 복합적 분류의 활용 등이 필요할 것으로 판단된다. 이를 고려할 때, 우리나라의 보호지역에 대한 IUCN 카테고리의 적용원칙으로는 (1)원생지 개념의 보호지역(Ib) 적용 배제, (2)자연자원의 지속가능한 이용에 있어 극히 제한적 이용(자연보존지구, 자연환경지구의 합이 95%이상) 개념 고려, (3)거주민 점유 수준 등 관리여건 고려, (4)생태계 서비스 유지 개념 고려, (5)복합적 분류 활용을 선택할 수 있다. 이 원칙에 따라 IUCN 카테고리 적용 분류키를 소백산 국립공원에 적용하면, 소백산 국립공원은 IUCN 카테고리 II에 적합하고, 소백산 국립공원 내 천연기념물로 지정되어 있는 주목군락지는 카테고리 Ia 지역이 적합하다. 본 연구에서 제안한 보호지역의 분류키는 향후 보호지역의 카테고리 적용을 위한 기초자료로 활용될 수 있을 것으로 사료된다. 향후 IUCN 카테고리 채택을 통한 보호지역의 효율적 관리를 위해서는 카테고리별 차별화된 관리가 가능하도록 각 카테고리의 보전 목적에 적합한 법제도에 대한 검토와 관리수단에 대한 연구가 필요할 것이다.

• 대한한의학원전학회지
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• 제36권3호
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• pp.89-128
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• 2023

Objectives : This study aims to diachronically examine the classification systems of all materia medica, followed by categorization and analysis of each category to deduce each category's characteristic. This will provide foundation for further examining classifications of bencao in contemporary herbology. Methods : Classification systems from a total of 93 bencao related texts were collected and categorized. Each category's classification system was analyzed to determine its meaning. The classification systems were compared from a diachronic perspective, to further deduce each system's problem from a historical context. Results : The classification systems of materia medica could be summarized as following three standards: quality, origin, and medical application. In reality, bencao could be generally classified according to origin and medical application. The origin-based classification system provided a stable and flexible classification outline in the expansion process of bencao. The medical application-based classification strengthened the relationship between bencao and illness pattern, improving clinical applicability. Conclusions : In the history of herbology, the two classification systems created the current of herbology through mutual contribution and conflict. We hope that further discussion on the direction towards which classification system of bencao in contemporary herbology should head will proceed based on this study.