기온(氣溫), 습도(濕度), 풍속(風速)이 마라톤 선수(選手)의 경기기록(競技記錄)에 미치는 영향(影響)

원종세 ( Jong Se Won ) 건국대학교 교육연구소 2000 교사와 교육(구 교육논집) Vol.24 No.-

This study was intended to identify the effect of temperature, humidity and wind velocity on the marathoners` records in the marathon race. For this purpose, this study attempted to analyze the effect of each factor on the record of marathoners in the marathon races with a focus on the lO-year officially approved records(19S9-1998) of to 120 top winners and winning athletes (annual number of athletes)- ranging from 1st to 6th places- of the Dong-A Marathon Race and the Cho-Il Marathon Race which are the most authoritative of the marathon races that are held in Korea. This study conducted bivariate correlation analysis, multiple regression analysis, linear regression analysis and trend analysis about data using such statistical programs as SPSS-PC V.7.5 and MINITAB. Based upon the results of the above methodology and data analysis, the following conclusion were drawn : 1. In setting the record in the marathon races, the optimal temperature was 5-10℃ and as temperature rose by 1℃, their top winners` records dropped by 16.1 second and the winning athletes` average records(1st to 6th places) dropped by 35.3 seconds. It was found that the effect of temperature on the winning athletes` records varied among athletes. That is, they could be divided into 1) the type of athletes who dropped with the rising temperature, 2) the type of athletes whose records became better with the rising temperature and 3) the type, of athletes who were not influenced by temperature. 2. It was found that humidity did not have an effect on top winners` records and winning athletes` average records within the temperature range of 5-10℃. But the effect of humidity on winning athletes` records varied among marathoners. They could be divided into 1) the type of athletes who were not influenced by humidity, and 2) the type of athletes whose records rose with the rising humidity at temperature below 15℃. 3. It was found that wind velocity did not exert an effect on marathon top winners` and winning athletes` average records. 4. It was found that of the factors influencing the marathoners` records (i.e. temperature, humidity and wind velocity), temperature and humidity were the factors dropping their records while wind velocity was the factor bettering marathoners` records. But the principal factor having the most effect on marathoners` records was found to be temperature, and athletes` marathon records tended to drop as temperature rose. 5. Korean winning athletes tend to improve in terms of competitive power. the winning athletes` records become better by 12″-15″/year on average in the Dong-A Marathon Race while they became better by 6″/year on average in the Cho-Il Marathon Race. Therefore, the winning athletes` records are expected to better by about two minutes in the Dong-A Marathon Race and by about one minutes in the Cho-Il Marathon Race in 10 years.

데이터 마이닝을 활용한 한국 프로야구 구단의 승패예측과 승률 향상을 위한 전략 도출 연구

김원종 ( Kim Won-jong ),최연식 ( Choi Yeon-sik ),유동희 ( Yoo Dong-hee ) 한국스포츠산업경영학회 2018 한국스포츠산업경영학회지 Vol.23 No.3

본 연구에서는 데이터 마이닝 기법을 활용하여 한국 프로야구의 승패예측모형을 구축하는 실험을 진행하였다. 이를 위해, 2017년에 실시된 한국 프로야구 10개 구단의 전체 경기 중 무승부 경기를 제외한 1,418경기에 대한 자료를 사용하였다. 승패예측모형에는 의사결정나무, 베이즈넷, 인공신경망 알고리즘과 앙상블 기법인 배깅과 부스팅이 사용되었으며, 그 결과 배깅 기법에 인공신경망을 적용한 예측모형에서 가장 높은 예측률인 85.18%를 기록하였다. 다음으로 의사결정나무 기반 예측모형을 활용하여 한국 프로야구 전체 구단에 관한 8개의 승패규칙을 도출하였다. 여기에서 승패규칙은 승패예측에 영향을 미치는 주요 요인들인 팀출루율, 팀타율, 피안타, 안타, 타석, 타수로 표현되며, 도출된 규칙을 바탕으로 구단의 승률 향상에 도움을 주는 전략을 제안하였다. 또한 플레이오프 진출 구단과 미진출 구단에 관한 승리규칙을 각각 4개씩 도출하였고 이를 바탕으로 두 집단에 맞춤화된 승률 향상 전략을 제시하였으며, 실제 구단에서 선수를 영입한 방향과의 비교를 통해 제시된 전략의 활용 가능성을 확인하였다. This study conducted an experiment to develop win-loss prediction models for the Korean professional baseball league using data mining techniques. To this end, we used data on 1,418 games from all games played by the ten Korean professional baseball teams in 2017, except draw games. We developed win-loss prediction models using not only a decision tree, Bayse net, and artificial neural network algorithms, but also ensemble methods, such as bagging and boosting. As a result, first, we found that the artificial neural network-based prediction model using the bagging method reported the best accuracy (85.18%). Second, we derived eight win-loss rules for entire teams from the decision tree-based prediction model. These rules consist of six influential factors: team on base average, team batting average, hit by opponent, hit, plate appearances, and at bat. Using the derived rules, we proposed helpful strategies for improving the winning rate. Third, we derived four winning rules for both playoff teams and non-playoff teams; using the rules we proposed customized strategies for improving the winning rate of the two different groups. Finally, we confirmed the feasibility of the proposed strategies by comparing non-playoff teams’ actual player recruitment strategies.

WC-Ni-Si-B₄C계 초경합금 제조 및 스테인레스 스틸과의 확산접합

원종운(Jong-Wun Won) 한국생산제조학회 2015 한국생산제조학회지 Vol.24 No.6

전기자동차 구동용 모터 소음 저감을 위한 하우징 설계

원종식(Jongsik Won),정영호(Youngho Jung),김병환(Byeonghwan Kim),강병희(Byenghee Kang),박경호(Kyoungho Park) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11

There are various methods to increase driving distance of electric vehicles(EV). One of them is the improved driving efficiency of the traction motor. In terms of electrical design, reduction of electrical losses is essential to improve the energy efficiency. In addition, lightweight design of the motor is also important. The lightweight design increase power density(kW/kg) of the motor, and it means higher product value of the motor itself. In this study, a topology optimization technique is applied to reduce housing weight and to optimize housing surface vibration and radiated noise.

자연냉매 CO₂를 사용하는 자동차에어컨의 성능특성에 관한 실험적 연구

원종필(Jong phil Won),김용석(Yongseok Kim),이헌균(Hyunkyun Lee),이동혁(Donghyuk Lee) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

This paper deals with the research for the operating parameters that could be used for transcritical CO₂ mobile air conditioning systems. It presents experimental results of the influence of the operating parameters to coefficient of performance and capacity of the mobile air conditioning system. A new, efficient, and environmentally safe automobile CO₂air conditioning system is introduced and it consists of 2-row microchannel type evaprorator, 1-row gas cooler, coaxial & microchannel type internal heat exchanger, manual expansion valve, accumulator and compressor. Experimental results shows good capacity of air conditioning system and coefficient of performance compared to the HFC-134a refrigerant system.

질산칼슘 혼화재를 사용한 대단면 급속 포장 콘크리트의 균열 및 내구특성

원종필(Won Jong Pil),이시원(Lee Si Won),이상우(Lee Sang Woo),박해균(Park Hae Geun) 대한토목학회 2009 대한토목학회논문집 A Vol.29 No.1A

The performance of high-early strength pavement concrete for large areas is influenced by the physical and chemical environment during service life. Generally, penetration, diffusion, and absorption of harmful materials that exist outside the concrete cause damage to its structure. Thus, we have to use a mixture for durability to keep the required quality for the planned service life. Moreover, in using high-early-strength cement and accelerators, a high heat of hydration to create the initial strength can cause cracks. Based on evaluations from optimal mix proportions of high-early-strength pavement concrete for large areas, we conducted water permeability, abrasion resistance, freeze-thaw, plastic, drying, and autogenous shrinkage tests. Test result showed that a mix of accelerator and PVA fibers showed excellent performance. 급속 포장 콘크리트는 타설 직후 공기 중에 노출되어 물리적, 화학적 영향을 많이 받아 유해물질들의 콘크리트 구조물 내부로 침투하여 사용연한이 감소하게 된다. 이와 같이 콘크리트 투과 특성은 내구성능을 결정하는데 중요한 요소이다. 또한 조강시멘트와 조강제의 성능으로 인하여 급격한 수화반응으로 인한 수화열로 열과 수분의 이동이 증가하여 구조물에 인장응력을 발생시켜 미소균열을 발생시킨다. 본 연구에서는 대단면 포장체의 급속 시공용으로 도출된 배합을 바탕으로 물투수시험, 동결융해반복시험, 마모저항성시험, 표면박리시험 및 소성수축, 건조수축, 자기수축 등의 시험을 실시하였다. 시험결과 조강제 및 섬유를 혼입한 배합이 가장 우수한 결과를 보여주었다.

절대왕정(La Monarchie absolue)과 라 퐁뗀느(La Fontaine)

원종익(WON Jong-Ik) 프랑스학회 1998 프랑스학연구 Vol.16 No.-

안전선영역 감시를 위한 적응적 물체 인식에 관한 연구

원종운(Jong-Un Won),김길동(Gildong Kim),정의진(Eui-Jin Joung),이한민(Hanmin Lee),황인호(Inho Hwang),김영규(YoungGyu Kim) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.10

외국전문가 초빙 연수과정 개최 방안에 관한 연구 - 연수과정 운영 프로세스(Process)를 중심으로 -

원종열 ( Won Jong Yeoul ) 한국디자인트렌드학회 2005 한국디자인포럼 Vol.12 No.-

디자인의 국가경쟁력은 전문디자이너를 얼마만큼 보유하고 있느냐에 좌우되며, 전문디자이너가 부족한 국가는 이를 어떻게 확보하고 양성하느냐가 중요한 요소로 작용할 수밖에 없다. 본 논문에서는 산업디자인의 국가 경쟁력을 강화하기 위한 수단의 일환으로서 외국전문가 초청 연수과정 운영에 초점을 맞추어 다음과 같은 방안을 제시하고자 한다. 첫째, 외국전문가 초빙에 따른 디자인분야 연수과정의 추진체계 및 추진방법의 틀을 제시하고, 연수과정의 프로그램 기획에서부터 사후평가에 이르는 일련의 프로세스(process)를 제시하였다. 둘째, 연수과정 운영 단계에서는 외국전문가 초청에 따른 전반적인 사항으로서 과정개설에 따른 사전준비단계, 과정진행 중 점검사항, 과정 종료 후에 수반되는 각각의 사항들에 대한 체크리스트(check list)를 제시하였다. 셋째, 위와 같이 외국전문가 초청 연수과정 운영에 따른 프로세스를 제시함으로써 향후 디자인의 국가 경쟁력 제고를 위한 전문 인력 양성의 발전 방향을 모색하였으며, 이를 통해 국내 디자이너의 자질향상과 디자인의 선진화를 쾌할 수 있을 것이다. The international competitiveness of design is influenced by how many professional designers the countries have, and it is a very important factor to the countries which are short of professional designers that how they can secure and educate them. This report will present plans as below focusing on the training course management by the invited foreign specialist as a part of the way to strengthen the international competitiveness of industrial design. First of all, it presented the outline of promoting the system and method of the training course with the invitation of the foreign specialist, and also presented a series of process from planning to evaluating the project afterwards. Secondly, it presented the checklist as general details coming with the foreign specialist invitation on the stage of training course management, such as the advance preparations to open the course, things to be checked in progress and every other detail coming after the course completion. Thirdly, the above presented process in association with the training course management inviting the foreign specialist led us to find a way to educate specialists for raising the international competitiveness of design in the future, and we will be able to improve the quality of internal designers and advance their design through this.

무인항공기 지상통제 소프트웨어 개발을 위한 사용자리서치

원종윤(Won Jong youn),노재상(Jaesang Roh) 한국항공우주학회 2017 한국항공우주학회 학술발표회 논문집 Vol.2017 No.11