Muskingum-Cunge 홍수추적방법의 거동해석

김대근 대불대학교 2003 大佛大學校大學院 硏究論文集 Vol.2 No.1

Finite difference equation on the generalized Muskingum-Cunge flood routing method with free time and space weighting factor was proposed and error analysis of the difference equation was carried out. The error analysis shows that the numerical solution of the Muskingum-Cunge method becomes diverged with time when the sum of time weighting factor is greater than 1.0. Numerical diffusion increases when the sum of time weighting factor and space weighting factor decreases. Numerical diffusion and numerical oscillation increase when the grid resolution is coarse.

엘리트 무도선수의 인권의식에 따른 성취목표성향 및 운동몰입에 미치는 영향

김대근,정성배,성낙훈 한국국가안보·국민안전학회 2020 한국국가안보·국민안전학회지 Vol.11 No.-

The purpose of this study is to investigate the human rights consciousness of college sports athletes and the exercise commitment to athletes' achievement goals. In other words, this study aims to identify the perceptions, judgments, and behavioral awareness of the human rights awareness of college athletes, and to identify the propensity among goals, perceptions, and dispositions in relation to each athlete's achievement goals. Furthermore, on the impact of interactivity between sports immersion and behavioral immersion, which is closely related to the performance improvement of athletes, 267 students were surveyed using the Survey Monkey mobile program for university sports athletes. As a result of the analysis, it was found that it affects human rights awareness and achievement goal orientation. Also, the higher the achievement goal, the more immersive exercise and tighter athletic performance will be developed. The above results suggest that it is time to respond to the social perspectives of university athletes and to be free from future social-oriented anti-social behavior. 이 연구는 엘리트 무도선수에 대한 인권의식을 알아보고 선수가 인식하는 성취목표와 운동에 대한 몰입도 관계를 알아보는데 있다. 즉, 인권의식이 이슈화 되면서 선수에 관한 인권보호와 보장에 대한 가이드라인을 제시하고, 이탈방지 뿐만 아니라 자신에 대하는 태도와 동료와의 관계, 운동몰입 간의 성향을 파악 합에 있다. 또한 엘리트 무도선수의 정기적인 인권의식 교육프로그램 개발과 현장에서 적용 가능한 지도자들의 인권교육에 관한 기초 자료를 제공함에 있다. 엘리트 무도선수는 중등교육과 다른 환경에서 자신이 설정한 목표에 책임이 따르게 된다. 이는 일탈행동과 성공적인목표성향 두 관점에서 경기력에 영향을 미치기 때문에 성공적인 목표설정과 몰입간의 관계를 규명하고자 한다, 따라서 이 연구는 대학스포츠선수를 대상으로 편의표준추출법으로 267명을 대상으로 이루어졌으며, 자료처리는 SPSS 21.0/Amos 21.0 Version 통계프로그램을 이용하여 기술통계분석, 요인분석, 신뢰도분석, 상관분석 및 구조방정식(SEM)을 실시하였다. 분석결과 인권의식, 성취목표성향에 영향이 미치는 것으로 나타났다. 성취목표가 높게 측정될수록 운동몰입과 밀첩한 경기력이 계속하여 발전해 나갈 것으로 사료된다. 이상의 결과는 대학운동선수의 사회적 관점에서 어떻게 대응하고 차후 목표지향적인 관계형성 반사회적 행동에서 자유로질 것이며, 선수를 바라보는 폐쇄적인 관점에서 현재 대학선수에 관한 새로운 관점의 전환이 필요한 시점이라 사료된다.

An exploratory study for an evidence of electroencephalographic changes in isolated subjects for distant mental intention

김대근 한국감성과학회 2014 감성과학 Vol.17 No.4

This double-blind study, as a human experiment of nonlocality, investigated the effects of senders' intention onthe central nervous system of a distant human receiver and it explored the roles that motivation might have inmodulating these effects. Whole brain activity was measured in the receiver whom was asked to relax in a distantroom for 16 minutes; the sending person directed intention of oneness toward the receiver during repeatedvariable-second epochs separated by variable-second non-intention epochs. The total length of intention epochs andthat of nonintention epochs were balanced. Eighteen sessions were conducted. In 9 of those sessions, the senderwas the receiver's lover. In another 9 of those sessions, the sender was just acquainted with the receiver before thesession. The receiver's whole brain activity recorded during the intention epochs were compared with the samemeasures recorded during the nonintention epochs used as controls. The statistical difference between the intentionsversus controls across 18 sessions was examined by paired-t test. In addition, subgroup analysis for the 9 couplesessions and 9 non-couple sessions were additionally examined by the same test. The effect of distant intentionalitydecreased slow waves or increased EEG fast waves mainly in frontal regions, and increased EEG coherence duringthe intention epochs. The effects was not statistically significant after Bonferroni correction, but the couple sessionscombined showed the largest effect followed by all sessions combined. Non-couple sessions combined showed thesmallest effect. The changes in EEG power mean that receiver participants became more alert during the intentionepochs and the change in EEG coherence might be evidence of coherent heart influence on EEG activity. Plannedcomparison with specific hypothesis testing for the suggested changes in this study have to be followed for anevidence of electroencephalographic changes in isolated subjects for the distant mental intention.

Assessment of Noncontiguous Posterior Malleolar Fractures in Distal One-Third Tibia Shaft Fractures with Proximal Fibula Fractures

김대근,곽병훈 대한골절학회 2022 대한골절학회지 Vol.35 No.3

Purpose: Posterior malleolar fractures after intramedullary nail surgery rarely occur in distal tibia shaft fractures. The importance of preoperative ankle evaluation in preventing these fractures is also common knowledge. There are no studies in the literature on posterior malleolar fractures in distal onethird tibia shaft fractures except for distal metaphyseal tibia fractures to the best of our knowledge. The purpose of this study was to evaluate the incidence and radiological features of posterior malleolar fractures in distal one-third tibia shaft fractures with proximal fibula fractures. Materials and Methods: Thirty-one patients diagnosed with distal one-third tibia shaft fractures with proximal fibula fractures from January 2016 to May 2021 were retrospectively reviewed. With the aid of plain radiographs and computed tomography (CT) scans, the fracture patterns of the tibia and fibula were classified according to the AO Foundation /Orthopedic Trauma Association (AO/OTA) classification, and posterior malleolar fractures were identified. The fracture pattern was classified according to the Haraguchi classification, and the angle between the bimalleolar axis and the posterior malleolar fracture line was measured when there was a posterior malleolar fracture. Results: Out of the 31 distal one-third tibia shaft fractures with proximal fibula fractures, 16 cases (51.6%) had noncontiguous posterior malleolar fractures that were confirmed on a CT scan, while 3 cases (18.8%) were visible on initial plain radiographs. There was no statistically significant variation seen in the presence of a posterior malleolar fracture in the tibia (p=0.15) and fibula (p=0.87) fractures. According to the Haraguchi classification, there were 15 posterolateral-oblique fractures (Type I) and 1 medial-extension fracture (Type II), and the mean angle was 24.5°. Conclusion: Noncontiguous posterior malleolar fractures occurred in approximately half of the distal one-third tibia shaft fractures with proximal fibula fractures, and a CT scan was considered necessary to diagnose posterior malleolar fractures before surgery.

피트니스 애플리케이션에 따른 관계 혜택과 고객만족 및 관계성과에 미치는 효과

김대근,정구중 한국스포츠학회 2021 한국스포츠학회지 Vol.19 No.2

이 연구는 최근 피트니스 시장에 등장한 애플리케이션을 통한 관계마케팅과 고객만족 및 관계성과와의 효과를 규명하기 위해 2020년 3월 1일 ~ 7월 31일까지 피트니스 관련 경험자 및 애플리케이션 사용자 312명 중 불응 답 침 관련 없는 설문자 66명을 제외한 246명으로 이루어졌으며 온라인 프로그램(서베이 몽키)를 활용하여 편의 표준 추출법 을 사용하였다. 측정도구는 SPSS 21.0을 통해 분석하여 빈도 분석과 탐색적 요인 분석 및 신뢰도 분석을 수행하였으며, 간접효과의 유의성을 확인하기 위해 구조방정식 모형 분석을 수행하였다. 분석한 결과 피트니스 애플리케이션은 관계 혜택과 고객만족은 정(+)의 영향을 미치고 있으며, 고객만족과 관계성과는 정(+)의 영향을 미치고 있다. 또한, 관계 혜택 과 관계성과는 정(+)의 영향을 미치는 결과를 이끌어 냈으며, 이는 과거의 대면방식의 피트니스 시장에서 온라인 상의 비대면 시장에서 고객과 상호 교환 방식이 가능하다는 연구의 결과로 사료된다. 애플리케이션을 통한 비대면 운동방식은 앞으로 더욱 기대되는 피트니스시장에 영향을 줄 것이다. 따라서, 소비자의 다양성과 욕구를 잘 반영되지 않는 피트니스 시장은 도태될 가능성이 높기에 새로운 피트니스시장 경영을 위한 핵심과제로 사료된다. In order to investigate the relationship between relationship marketing and customer satisfaction and relationship performance through applications that have recently appeared in the fitness market, this study was conducted among 312 fitness-related experienced users and application users from March 1 to July 31, 2020. It consisted of 246 people, excluding 66 unrelated questionnaires, and a convenient standard extraction method was used using an online program(Survey Monkey). The measurement tool was analyzed through SPSS 21.0, and frequency analysis, exploratory factor analysis, and reliability analysis were performed. Structural equation model analysis was performed to confirm the significance of the indirect effect. As a result of the analysis, the fitness application had a positive(+) effect on relationship benefits and customer satisfaction, and a positive(+) effect on customer satisfaction and relationship performance. In addition, relationship benefits and relationship performance led to a positive(+) result, which is considered as a result of a study showing that interaction with customers is possible in the online non-face-to-face market in the past face-to-face fitness market. The non-face-to-face exercise method through the application will affect the expected fitness market in the future. Therefore, the fitness market that does not reflect the diversity and desires of consumers is highly likely to be eliminated, so it is considered a key task for the management of the new fitness market.

소아 급성위장염 환아의 Rotavirus감염에 관한 연구

김대근,이주섭,박기순,윤현정 대한임상병리사협회 1984 임상병리사회지 Vol.16 No.1

코스닥등록법인의 조세혜택에 관한 연구

김대근,이귀선 숭실대학교 사회과학연구원 2002 사회과학논총 Vol.5 No.-

카페리여객선 퇴선 시 여객 안전 향상을 위한 MES 장비에 대한 고찰

김대근,이은수 해양환경안전학회 2020 해양환경안전학회 학술발표대회 논문집 Vol.2020 No.06

제주항 카페리여객선 계류시스템 개선에 관한 연구

김대근,조익순,이형탁 해양환경안전학회 2020 해양환경안전학회 학술발표대회 논문집 Vol.2020 No.11

補助部門의 原價配賦와 意思決定에 관한 考察

金大根 건국대학교 1986 論文集 Vol.22 No.1

The Purpose of this paper is to survey mathematical model of overhead cost allocation and to examine their economic meaning and implications. We lave traced historically two approaches to this problems : the matrix model approach and the LP model approach. Capettini and Salamon (1977) presented an example of the decision making necessary to determine whether to continue generating a service internally versus acquiring the service externally. The example demonstrates that the basic data required for a correct solution to this decision problem can be obtained from the information normally presumed to be available when service department costs are allocated to producing departments by the algebraic (simultaneous equations) method. Baker and Taylor (1979) Proposed a LP approach to the external aquisition problems, and demonstrated how to use LP results to compute cost allocation. The mathematical duality in the LP model shows that the problems of optimal allocation and of valuation are inseparable. The problem of allocation is that of finding optimal quanties of service department output (minimize the sum of service department costs), and the problem of evaluation is that of determining the service values (determine allocating cost). The two problems are mathematically identical and are two aspects of the same problem. This would be expected on the basis of usual economic reasoning, but we shall gain important insight in accounting theory, especially in the problem of cost determination. The problem of cost determination is not separable from that of the relevant decision model for optimal resource allocation. This is an illustration of the way in which mathematical reasoning can lead to the discovery of new accounting facts.