• Title/Summary/Keyword: 학자

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An Ontology-Driven Mapping Algorithm between Heterogeneous Product Classification Taxonomies (이질적인 쇼핑몰 환경을 위한 온톨로지 기반 상품 매핑 방법론)

  • Kim Woo-Ju;Choi Nam-Hyuk;Choi Dae-Woo
    • Journal of Intelligence and Information Systems
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    • v.12 no.2
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    • pp.33-48
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    • 2006
  • The Semantic Web and its related technologies have been opening the era of information sharing via the Web. There are, however, several huddles still to overcome in the new era, and one of the major huddles is the issue of information integration, unless a single unified and huge ontology could be built and used which could address everything in the world. Particularly in the e-business area, the problem of information integration is of a great concern for product search and comparison at various Internet shopping sites and e-marketplaces. To overcome this problem, we proposed an ontology-driven mapping algorithm between heterogeneous product classification and description frameworks. We also peformed a comparative evaluation of the proposed mapping algorithm against a well-Down ontology mapping tool, PROMPT.

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Monitoring of the Butterfly Communities inhabited of Mt. Hallasan, Jeju island, Korea (제주도 한라산 나비군집 모니터링)

  • Kim, Do-Sung;Park, Seong-Joon;Kim, Dong-Soon;Cho, Young-Bok;Lee, Yeong-Don;Ahn, Nung-Ho;Kim, Ki-Gyoung;Seo, Hong-Yul;Cha, Jin-Yeol
    • Korean Journal of Environment and Ecology
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    • v.28 no.6
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    • pp.697-704
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    • 2014
  • Mt. Hallasan in Jejudo has been well known as a habitat for both northern and southern limited butterflies and attracts the interests of many lepidopterists. In this study, the line transect method was used to monitor the community and similarity of butterflies monthly monitoring from May to September 2013, and the results were compared with the previous data. Through monitoring, 3,397 individuals in 26 species of 5 families were found in the present study. The monitored individuals belonging to 4 species (Aphantopus hyperantus, Eumenis autono, Lethe diana and Melanargia epimede) was 2,578 (75.9%), showing the prevalent species among the butterflies observed in the grassy area of the Mt. Hallasan. The butterflies inhabiting Mt. Hallasan showed higher similarity in the area where the open grassy space and the crowns of tree layer coexist than in landscape consisting of solely the tree layer or open grassy space. The habitation of butterflies by heights showed the altitudes between 1,665 to 1,700 m, located beneath the Baekrokdam (the crater) of Mt. Hallasan, possessed the most species and individuals. And it was also observed that the species that previously inhabited the subalpine zone moved to the area of higher altitudes together with the species that previously inhabited rather lower altitudes than the subalpine zone.

정성적 시뮬레이션에 의한 화력발전소 보일러 프로세스의 고장진단

  • 김응석;오영일;변승현
    • Proceedings of the Korea Society for Simulation Conference
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    • 1999.10a
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    • pp.169-169
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    • 1999
  • 최근 산업 플랜트의 공정제어 시스템은 복잡하고 대규모화되어 고장 발생시 경제적 손실과 위험성이 증폭되어 규정된 안정서와 신뢰성 확보가 필수적이라 할 수 있다. 고장검출 및 진단기법은 시스템의 신뢰성을 높이기 위한 효과적인 방안을 연구하는 것으로 현대에 들어서 많은 학자들의 관심을 끌고 있으며 실제 계통에 점차적으로 응용되고 있다. 현재까지 개발된 고장검출 및 진단기법은 사용된 프로세스 모델의 형태, 고장검출 진단 알고리즘에 따라 다양하게 분류 될 수 있으며 일반적으로 사용된 모델에 따라 크게 1) 정량적 모델에 근거한 해석적 기법, 2) 정성적 모델에 근거한 기법, 3) 지식기반 진단 기법으로 구분 할 수 있다. 이중 정량적 모델 기법은 대상계통의 수학적 모델에 근거하여 운전 데이터를 분석함으로서 고장검출 진단을 수행하는 해석적 기법으로서 근본적으로 계통의 정확한 수학적 모델을 요구하므로 불확실성을 포함한 계통 및 비선형성이 강한 계통등에는 적용이 곤란하다. 정성적 모델 및 지식기반 기법은 정량적 진단 기법과는 달리 대상 프로세스에 대한 수학적 모델 대신에 운전자의 경험과 프로세스 변수간의 상호 작용 및 고장의 전파과정, 고장원인과 증상과의 직접적인 관계에 대한 구조적 지식에 근거한 것으로 고장원인에 대한 계통의 동작을 추론 할 수 있으며, 상황 변화에 따른 영향을 예측할 수 있다. 본 논문에서는 정성적 모델 및 지식기반 기법에 근거한 고장검출 및 진단 기술을 화력 발전소 보일로 프로세스에 적용하여 정성적 시뮬레이션에 의한 설비의 고장을 조기에 발견하여 고장 파급으로 인한 발전 정지 및 설비의 손상 확대를 방지하고 고장 발생시 신속한 원인 규명 및 후속 조치관련 정보들을 운전원에게 제공할 목적으로 현재 전력원에서 개발중인 지능형 경보시스템에 대하여 기술하고자 한다.음과 같이 설명하였다. 서로 상반되는 것들이 다음과 같이 설명하였다. 서로 상반되는 것들이 부딛힘이 없이 공존하고 일상의 논리가 무시된다. 부정, 의심이 없고 확실한 것이 없다. 한 대상에 가졌던 생각이 다른 대상에 옮겨간다(displacement). 한 대상이 여러 대상이 갖고 있는 의미를 함축하고 있다(condensation). 시각적인 순서가 무시된다. 마음속의 생각과 외부의 실제적인 일을 구분하지 못한다. 시간 상의 순서가 있다가 없다가 한다. 차례로 일어나야 할 일이 동시에 한꺼번에 일어난다. 대상들이 서로 비슷해지고 동시에 있을 수 없는 대상들이 함께 나타난다. 사고의 정상적인 구조가 와해된다. Matte-Blance는 무의식에서는 여러 독립된 대상들간의 구분을 없애며, 주체와 객체를 하나로 보려는 대칭화(symmetrization)의 경향이 있기 때문에 이런 변화가 생긴다고 하였다. 또 대칭화가 진행되면 무한대의 느낌을 갖게 되어, 전지(moniscience), 전능(omnipotence), 무력감(impotence), 이상화(idealization)가 나타난다. 그러나 무의식에 대칭화만 있는 것은 아니며, 의식의 사고양식인 비대칭도 어느 정도 나타나며, 대칭화의 정도에 따라, 대상들이 잘 구분되어 있는 단계, 의식수준의 감정단계, 집단 내에서의 대칭화 단계, 집단간에서의 대칭화 단계, 구분이 없어지는 단계로 구분하였다.systems. We believe that this taxonomy is a significant contribution because it adds clarity, completeness, and "global perspective" to workflow architectural discussions. The vocabulary suggested here

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Developing an Adventure Game based on the 'Patterns' of Fun Theory for Inducting the Flow : 1 Hour (재미이론의 '패턴'에 근거하여 몰입 유발을 위한 어드벤처 게임 개발)

  • Kang, Jae-Woo;Cheo, Min-A;Um, Joo-Hee;Sung, Jae-Ho;Kim, So-Young;Kim, Hyeon-Jun;Son, Yu-Jin;Lee, Ju-Yeoun;Jang, Sae-Ri;Kang, Myung-Ju;Park, Chan-Il;Lee, Jong-Won;Oh, Hyoun-Ju;Kim, Sang-Jung
    • Proceedings of the Korean Society of Computer Information Conference
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    • 2014.07a
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    • pp.303-306
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    • 2014
  • 수많은 사람들이 게임을 제작 및 개발함에 있어, 많은 학자들이 다양한 방법으로 오랜 세월에 걸쳐 연구한 게임의 인문학적 정의 및 재미 이론은 현대의 게임 개발에 있어서도 그 이론적 배경을 담당하는 주춧돌의 역할을 맡고 있다. 본 논문에서는 청강문화산업대학교 게임전공의 게임 개발 프로젝트의 일환으로 구성된 '안드로메다' 팀이 Unity 3D 엔진을 기반으로 제작한 3D 생존 어드벤처 게임 "1 Hour"를 개발한 과정을 기술하였고, 그 과정에서 재미 이론의 '패턴'에 근거하여 플레이어로 하여금 몰입을 유발시키는 어드벤처 장르의 게임 디자인을 제시하는 것을 이번 연구의 목적으로 하였다. 연구 과정은 문헌 연구 및 개발 게임("1 Hour")의 플레이 테스트 등을 통해 게임에서의 몰입의 과정을 분석하였고, 몰입 유발 효과 증명을 위해 '패턴과 몰입의 상관관계'에 대한 가설들을 수립하고 실험을 실시하여 그 결과를 분석하였다.

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A Taxonomic Study of Asarum (Aristolochiaceae) in Korea (한국산 족도리풀속(Asarum, 쥐방울덩굴과)의 분류학전 연구)

  • So, Soonku;Kim, Muyeol
    • Korean Journal of Plant Taxonomy
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    • v.38 no.2
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    • pp.121-149
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    • 2008
  • Taxonomic treatment and the identification key for 6 species and 4 varieties from the genus Asarum (Aristolochiaceae) in Korea were presented on the basis of the morphological analyses. Recently the taxonomy of the genus Asarum in Korea is controversial in the definition of species and the establishment of variation range. Our morphological studies supported that the species A. patens, A. misandrum and A. versicolor should be recognized as independent species by the unique morphological characters such as calyx lobes, stylar protuberance and leaf variegation. Second, A. sieboldii var. cornutum, A. koreanum, A. maculatum and A. sonunsanense, regarded as species or variety by different scholars, showed a close relationship with A. sieboldii by the similar calyx characters. Thus, new combinations, such as A. sieboldii for. cornutum, A. sieboldii for. koreanum, A. sieboldii for. maculatum and A. sieboldii for. sonunsanense, are proposed. And A. heterotropoides var. seoulense and A. heterotropoides var. mandshuricum also had a close relationship, thus, new combinations, A. mandshuricum for. seoulense, A. mandshuricum for. mandshuricum, are proposed. Furthermore, it is appropriate that A. heterotropoides var. heterotropoides, only distributed in Japan, is revised into A. heterotropoides as independent species by the unique character from the 2 varieties above. Consequently, the genus Asarum in Korea is classified into 3 species and 7 forma.

Taxonomic study on infraspecific taxa of Lespedeza maximowiczii and hybrids with related species (조록싸리 종내분류군과 잡종의 분류학적 연구)

  • JIN, Dong-Pil;PARK, Jong-Won;CHOI, Byoung-Hee
    • Korean Journal of Plant Taxonomy
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    • v.49 no.4
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    • pp.300-318
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    • 2019
  • Many infraspecific taxa within Lespedeza maximowiczii and hybrids with related species have been described, but taxonomic verification remains controversial. We examined the morphological traits of hybrids (L. chiisanensis and L. patentibicolor) and infraspecific taxa (var. tomentella, elongata, and tricolor) and analyzed their genetic structures using microsatellite loci. Flower and leaflet shapes in var. tomentella and elongata were within the range of variation of those in var. maximowiczii, and individuals in the two former varieties were grouped into var. maximowiczii. Lespedeza maximowiczii var. tricolor was similar to L. buergeri in terms of the structure and flower color, whereas the leaflet and bracteole shapes of var. tricolor were similar to those of var. maximowiczii. Based on the genetic structure (K = 3), var. tricolor had a mixed lineage with L. maximowiczii and L. buergeri. In addition, these formed a distinct lineage at K = 5. For two hybrids, the flower and leaflet structure in L. chiisanensis did not differ from those in L. maximowiczii, whereas the flowers of L. patentibicolor were within the range of variation of L. bicolor. In addition, L. chiisanensis and L. patentibicolor were assigned to L. maximowiczii and L. bicolor, respectively, based on the genetic structure. We treated var. tomentella and elongata as a forma, f. friebeana, because L. friebeana preceded var. tomentella, whereas var. tricolor was treated as a distinct species, L. tricolor. Lespedeza chiisanensis was recognized as a synonym of L. maximowiczii. Lespedeza patentibicolor was considered to be L. bicolor.

The Bibliographical Investigation of the Lettuce (상추에 대한 사상의학적(四象醫學的) 고찰(考察) -백거, 와거, 고거, 고채(苦菜)를 중심으로-)

  • Kim, Jong-dug;Koh, Byung-hee
    • Journal of Sasang Constitutional Medicine
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    • v.11 no.2
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    • pp.341-359
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    • 1999
  • In the medical science of 'Sa-sang', a constitutional examination(diagnosis) and a medical treatment are important, however a dietary cure is considered as very important at the medical prevention and treatment. But there has been a confusion due to the different view concerning the constitutional foods in between scholars. There it is necessary for us to bring up the theoretical basis of the 'Sa-sang' constitutional - dietary cure by menas of the bibliographical study in relation to a historic, characteristics, efficiency of the major foods.

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Studies on Audiological Significance of the Bing Test (Being test의 임상청각학적 의의에 대한 고찰)

  • 이희배;차창일;노관택
    • Proceedings of the KOR-BRONCHOESO Conference
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    • 1978.06a
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    • pp.8.3-8
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    • 1978
  • In normal auditory systems, the difference between the bone conduction thresholds obtained with the test ear opened and occluded in low frequency signals below 1, 000Hz is about 10~25 dB. But no difference in these thresholds suggests the presence of a lesion in the conductive mechanism. Sullivan added the differences in these thresholds at 250Hz, 500Hz and 1,000Hz and called "Occlusion Index". In oder to study the audiological significance, we have measured the occlusion index in 40 ears of normal persons, 20 ears of chronic otitis media patients and 20 ears of sensori-neural hearing impairment patients. We also measured the static compliance in 40 normal ears and observed the correlation with the occlusion index. The results are as follows: 1. Occlusion index was 33. $10\pm10.63dB$ in normal group, $3.10\pm3.03dB$ in chronic otitis media; group, $28.10\pm15.17dB$ in sensori-neural group. 2. Static compliance in normal group was $0.61\pm0.31cc$ (0.22~1.75cc) 3. Occlusion index showed inverse proportion to static compliance.

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An Empirical Assessment of Competency Requirements for Logistics Managers of Freight Forwarding Companies (복합운송주선업 물류관리자의 자격요건에 관한 연구)

  • Kim, Jin-Su;Hong, Eui
    • International Commerce and Information Review
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    • v.14 no.2
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    • pp.147-172
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    • 2012
  • The aim of this research is to identify the competencies required by freight forwarding company logistics managers or supply chain managers. And this research also attempts to show their relative importance and key knowledge areas that require improvement. Using a survey questionnaire, data was collected against forty three logistics and supply chain management skills or competencies, which were then grouped into four categories and analysed. The Analysis revealed that supply chain awareness, ability to make decisions, analytical skill, communication skill, supply chain cost, people skill, and integration of internal or external information flow which belong to logistics planning group are considered the most important competencies for effective and efficient logistics functioning. On the other hand, reverse logistics and IATA regulations from environmental awareness group show little influence on logistics managers for improving their logistics performances. The results have implications for a variety of parties including prospective logisticians, students, teachers and companies considering expanding their business to Chinese market. For example, the results permit companies to employ appropriate logistics managers who are qualified with sufficient skills and competencies suggested in this research. In the case of practitioners, the results provide a benchmark for comparison with their current level of abilities and suggested competencies.

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An Empirical Assessment of Competency Requirements for Logistics Managers in China (중국진출 한국기업 물류관리자의 자격요건에 관한 연구)

  • Hong, Eui;Kim, Jin-Su
    • International Commerce and Information Review
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    • v.13 no.4
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    • pp.251-274
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    • 2011
  • The aim of this research is to identify the competencies required by logistics managers or supply chain managers in China. And this research also attempts to show their relative importance and key knowledge areas that require improvement. Using a survey questionnaire, data was collected against forty three logistics and supply chain management skills or competencies, which were then grouped into four categories and analysed. The Analysis revealed that supply chain awareness, ability to make decisions, analytical skill, communication skill, supply chain cost, people skill, and integration of internal or external information flow which belong to logistics planning group are considered the most important Competencies for effective and efficient logistics functioning. On the other hand, reverse logistics and IATA regulations from environmental awareness group show little influence on logistics managers for improving their logistics performances. The results have implications for a variety of parties including prospective logisticians, students, teachers and companies considering expanding their business to Chinese market. For example, the results permit companies to employ appropriate logistics managers who are qualified with sufficient skills and competencies suggested in this research. In the case of practitioners, the results provide a benchmark for comparison with their current level of abilities and suggested competencies.

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