근해 참조기유자망 어구의 침강재 개량에 관한 기초적 연구

김근형,김석종 한국수산해양교육학회 2023 水産海洋敎育硏究 Vol.35 No.3

This study is aimed to improve the sinker that is the sinking material of the offshore small yellow croaker drift gill net currently used in the field so that the sinker line of the net can float while maintaining a distance from marine wastes deposited on the seabed. Therefore, targeting the offshore small yellow croaker drift gill net equipped with the improved sinking material to prevent the damage or loss of the fishing gear, this researcher figured out the development characteristics of the attachment according to the improvement of the sinking material and carried out marine tests to analyze and investigate that. According to the results of the tests other than the fifth and sixth tests conducted according to water depth over time, in the range , the FS and SFL seem to influence the changing water depth over time insufficiently. It would be okay to attach the floor line to the offshore small yellow croaker drift gill net because the way of development is not different from the previous one. When comes closer to 1, the change of water depth influences the FS and SFL of the offshore small yellow croaker drift gill net equipped with the floor line significantly. And when it comes closer to zero, the floor line influences the FS and SFL of the offshore small yellow croaker drill gill net insignificantly. Also, Nets are divided into the offshore small yellow croaker drift gill nets equipped with the floor line with the width of 200 and the offshore small yellow croaker drift gill nets with the width of 300 previously used to figure out the replacement of the nets. According to the findings, the offshore small yellow croaker drift gill nets equipped with the floor line indicate a very low replacement rate as 2.4% out of the total amount of the nets.

지지도와 신뢰도의 가중치에 기반한 분류알고리즘에 관한 연구

김근형,Kim, Keun-Hyung 한국정보통신학회 2009 한국정보통신학회논문지 Vol.13 No.4

데이터마이닝 분야에서 기존의 분류알고리즘들은 보다 적은 컴퓨팅 자원을 이용하여 보다 빨리 분류모형을 생성하고자 하는 효율성 중심의 연구가 주를 이루었다. 본 논문에서는 분류알고리즘의 효율성을 추구할 뿐 아니라 온톨로지 자동생성이나 비즈니스 환경 등 각 응용분야에 적합한 유효한 분류규칙을 보다 많이 생성 할 수 있는 효과성도 동시 에 추구하였다. 이를 위하여 지지도와 신뢰도의 가중치가 적용된 가중치 적용함수를 제안하였고 이 함수의 성질들을 이론적으로 규명하였다. 가중치 적용함수를 사용하면서 새로운 분리 기준 설정 방법을 제안하였고 또한 새로운 분류알고리즘을 제안하였다. 제안한 알고리즘의 성능평가 결과 기존의 우수한 알고리즘보다 보다 많은 유효한 분류규칙들을 보다 신속하게 생성함을 알 수 있었다. Most of any existing classification algorithm in data mining area have focused on goals improving efficiency, which is to generate decision tree more rapidly by utilizing just less computing resources. In this paper, we focused on the efficiency as well as effectiveness that is able to generate more meaningful classification rules in application area, which might consist of the ontology automatic generation, business environment and so on. For this, we proposed not only novel function with the weight of support and confidence degree but also analyzed the characteristics of the weighted function in theoretical viewpoint. Furthermore, we proposed novel classification algorithm based on the weighted function and the characteristics. In the result of evaluating the proposed algorithm, we could perceive that the novel algorithm generates more classification rules with significance more rapidly.

Risk Factors of the Masticatory Function in Patients with Temporomandibular Risk Factors of the Masticatory Function in Patients with Temporomandibular Disorders: A Cross-Sectional Cohort Study

김근형,박조은,김미은,김혜경 대한안면통증∙구강내과학회 2019 Journal of Oral Medicine and Pain Vol.44 No.3

Purpose: To investigate the masticatory function of patients with different temporomandibulardisorders (TMD) phenotypes, and to explore the risk factors for the masticatoryfunction of TMD patients among multiple biopsychosocial variables using patient-reportedoutcomes (PROs). Methods: Clinical features and TMD diagnoses of 250 cases were investigated by reviewingmedical records. Psychosocial factors were evaluated using four questionnaires representingpain severity and pain interference (Brief Pain Inventory), pain catastrophizing (Pain CatastrophizingScale, PCS), psychological distress (Symptom Check List-90-Revised, SCL-90R)and kinesiophobia (Tampa Scale for Kinesiophobia for Temporomandibular Disorders, TSKTMD). Masticatory function, as a dependent variable, was determined using the Jaw FunctionalLimitation Scale (JFLS). Kruskal-Wallis test and Spearman’s rank correlation wereused for analyses. Results: A total of 145 cases were included and classified into four subgroups includinggroup 1: TMD with internal derangement without pain (n=14), group 2: TMD with musclepain (n=32), group 3: TMD with joint pain (n=60) and group 4: TMD with muscle-jointcombined pain (n=39). Pain severity (p=0.001) and interference (p=0.022) were the highestin group 2, but the mean global score of JFLS was the highest in group 3, followed bygroup 4, group 2, and group 1 (p=0.013). Pain severity, pain interference, the mean globalscore of PCS and the mean global score of TSK-TMD showed significant and moderate correlationwith the mean global score of JFLS. All subdimensions and the global severity indexof SCL-90R had significant, but weak correlations with all scores of JFLS. Conclusions: The results suggest that masticatory functional limitation depends on the TMDphenotypes. Among the various PROs, pain perception, pain catastrophizing and kinesiophobiaseem to be more influential risk factors on jaw function than psychological distress,such as depression and anxiety.

차세대 비즈니스 인텔리전스도입을 위한 영향요인에 관한 연구

김근형,김정윤,현정석,Kim, Keun-Hyung,Kim, Jeong-Yun,Hyun, Jung-Suk 한국정보통신학회 2008 한국정보통신학회논문지 Vol.12 No.9

기업 경쟁력을 향상시키기 위해 차세대 비즈니스 인텔리전스를 기업에 도입하는 것이 필요하다. 이를 위해 본 연구는 ERP를 도입한 기업들을 대상으로 하여 비즈니스 인텔리전스를 도입하는데 영향을 미치는 요인들을 분석하기 위한 연구모형을 제시했다. 연구모형과 설문조사를 바탕으로 실증분석을 실시함으로써 비즈니스 인텔리전스 도입을 위한 영향요인들을 도출하였다. 설문조사에 대한 분석결과를 설명하고 시사점을 제시하였다. There are growing needs of introducing Next Generation Business Intelligence into firm to strengthen competencies. Recently, Next Generation Business Intelligence appeared in the spotlight because it could support to connect the strategies establishment with enforcing the strategies. In this parer, we analyze the factors and build the theoretical model of influencing the utilization of Next Generation Business Intelligence. The practical implications were also discussed.

데이터마이닝 시스템의 커스터마이징 방법론

김근형,오경훈,김민철,Kim Keun-Hyung,Oh Kyung-Hoon,Kim Min-Cheol 한국정보통신학회 2004 한국정보통신학회논문지 Vol.8 No.8

상용화된 데이터마이닝 제품들은 대부분 완성품의 형태로 이들 기능들의 일부 또는 전부를 지원한다. 완성품은 구입 즉시 사용할 수 있다는 장점은 있으나 사용자 및 기업의 요구사항이나 환경에 유연하게 적응할 수 없는 문제가 있다. 본 논문에서는 데이터마이닝시스템을 완성품이 아닌 커스터마이징의 형태로 도입 및 구축하기 위한 방법론을 제안하고, 실제 오라클 제품을 이용하여 거스터마이징을 하는 사례를 살펴본다. 그리고, 구축된 데이터마이닝 시스템을 이용하여 판매 데이터를 분석한 사례를 제시한다. As a finished product, most commercialized products of Data mining are supposed to support some or all of these functions. These products have an advantage to be available as soon as they are purchased. But, they have some limit to meet users' needs and companies' requirements and to be adaptable to different settings. This study is focused on how to introduce Data mining system and implement it as a form of customizing, instead of a form of finished product. Also, this study try to present several cases which actually used customizing with Oracle products and some other cases which used constructed data mining to analyse sales data.

웹 기술과 멀티스크린 서비스

김근형,Kim, Geun-Hyeong 한국스마트미디어학회 2012 It's Smart Media Vol.1 No.3

VARIOUS BIOPRINTING SYSTEMS FOR DESIGNING TISSUE ENGINEERING SCAFFOLDS

김근형 한국고분자학회 2018 한국고분자학회 학술대회 연구논문 초록집 Vol.43 No.1

스마트관광을 위한 IT서비스 개발의 우선순위 도출을 위한 AHP 분석모델

김근형 한국정보시스템학회 2019 情報시스템硏究 Vol.28 No.4

Purpose The purpose of this paper is to observe the relative priorities of importances among IT services for Smart tourism as well as the relative priorities of importances among ways for developing the IT Services. Design/methodology/approach AHP analysis model was designed with 3 layers in order to recognize the relative importances priorities of IT services and the ways developing the IT services in Smart tourism. The factors in the top layer consist of Pre-trip IT services, During-trip IT services and Post-trip IT services. The lower factors in second layer of the Pre-trip IT services consists of Tourism information search, Online reservation and Price comparison. The lower factors of the During-trip IT services consists of Context recognition, Virtual Reality and Drone Application. The lower factors of the Post-trip IT services consists of Interactive Sharing and Tagging. The factor of third layer, the ways of developing the IT services consist of Company leading, University leading and Industry-University Collaboration. The structural questionnaire based on the AHP analysis model was designed and used to survey experts in IT and tourism areas. The collected data by the question investigation was analyzed by AHP analysis technique. Findings The importance priority of During-trip IT service was highest among in the three type IT services of tourism life cycle. The importance priority of Price comparison service was highest among IT services for Pre-trip. The importance priority of the Context recognition service was highest among IT services for During-trip. The Interactive sharing service was highest among IT services for Post-trip. It would be confirmed for the IT service development ways of Company leading to be suitable for most of the It services, such as Tourism information search, Online reservation, Price comparison, Context recognition, Virtual reality, Drone application, Interactive sharing.

스마트시티의 성공적 구현을 위한 AHP기반의 의사결정 모델 및 사례 분석

김근형,변영철,김성백 한국경영학회 2020 한국경영학회 통합학술발표논문집 Vol.2020 No.8

스마트시티는 많은 사회문제를 내포한 도시의 지속가능성을 확보하고 도시민의 삶을 질적으로 향상시키고자 하는 목적을 갖는다. 그러나 스마트시티를 구현하기 위한 추진과제들과 방법들은 각 도시의 상황에 따라 달라질 수 있다. 스마트시티 프로젝트의 각 추진과제들의 우선순위와 적합한 추진방법들을 결정할 수 있다면 스마트시티 구현의 성공 가능성을 높일 수 있다. 본 논문에서는 스마트시티 프로젝트에 포함될 수 있는 각 추진과제들의 우선순위와 각 과제별 적합한 추진방법들을 파악할 수 있는 AHP 분석 기반의 의사결정모델을 제안하였다. 제안한 의사결정모델은 스마트시티 구현을 위한 내용적 요소들과 방법적 요소들 사이의 상대적 중요도를 정량적으로 계측할 수 있도록 한다. 제안한 의사결정모델은 3 계층으로 이루어진다. 1계층은 추진영역 요소들을 포함하고 2계층은 추진과제 요소들을 포함하며 3계층은 각 추진과제별 추진방법 요소들을 포함한다. 제주 스마트시티를 위한 의사결정모델 적용 사례로서, 1계층에 포함된 추진영역들로는 관광, 주민생활, 산업을 도출하였다. 2계층에 포함된 추진과제들로는 전기자동차 확산, 에너지개발, MaaS, 안전, 쓰레기. 빅데이터 플래폼, 블록체인특구를 도출하였다. 각 추진과제에 대한 추진방법들로는 관 주도, 민간기업주도, 조인업, 리빙랩을 도출하였다. 제안한 의사결정모델은 각 도시의 상황에 맞게 커스커마이징하여 활용할 수 있다.

전기방사(Electrospinning)된 나노파이버의 응용기술 및 최신 연구 동향

김근형,허신,김완두,Kim, Geun-Hyeong,Heo, Sin,Kim, Wan-Du 재료연구소 2005 機械와 材料 Vol.17 No.1