다중 특징을 이용한 견고한 손추척 및 인식 시스템

천성용(Sung Yong Chun),박신원(Shin Won Park),장호진(Ho Jin Jang),이찬수(Chan-Su Lee),손명규(MyoungGyu Sohn),이상헌(Sang-Heon Lee) 한국정보과학회 2010 한국정보과학회 학술발표논문집 Vol.37 No.1C

본 연구에서는 효과적인 손 제스처 인식을 위하여 다중 특징을 이용한 견고한 손 추적 방법을 제시한다. 기존의 많은 손추적 장치들이 칼라 정보나 모션 정보와 같은 단일한 정보를 바탕으로 손을 검출하고, 이를 바탕으로 손의 추적하는 방법들을 제시하고 있다. 이러한 방법들의 경우에는 손 추적 중에 환경이나 상황이 변하게 되면, 손추적의 정확도가 현저하게 떨어지게 된다. 본 연구에서는 이러한 문제점들을 보완하기 위하여, Adaboost를 이용한 손 검출, 역투영을 기반으로 손 색상을 이용한 추적, KLT를 바탕으로 한 모션 추적을 이용한 검출을 동시에 수행하며, 각 센서의 추적 결과에 대한 칼만 필터 적용뿐 아니라, 각 센서 정보를 통합하여 견고한 결과를 얻기 위한 방법을 제시한다. 이를 바탕으로 손제스처 인식 시스템을 개발하였으며, 개발된 제스처 인식을 바탕으로 비디오 플레이를 제어하는 시스템을 구현하였다.

고유수용성 강화운동이 축구선수의 관절위치감각, 거골하 관절각 및 자세조절능력에 미치는 영향

천성용(Chun Sung-Yong),김태형(Kim Tae-Hyung),박정배(Park Jeong-Bae) 한국체육과학회 2010 한국체육과학회지 Vol.19 No.4

The purpose of this study was to investigate the effect of proprioceptive exercise program on motor function of lower limb in male soccer players of ankle joint. 29 male soccer players divided into three groups: Control group(CON, n=10); Strength exercise group(SEG, n=9); Proprioceptive exercise group(PEG, n=10). The various kinds of test were performed before and after the strength and proprioceptive exercise training to each group for eight weeks. The results are as follows; 1. Joint position sense test was significant improved after exercise group than before group. Passive joint position sense test was significantly decreased at eversion(F=5.486, p=.01), active position sense test was significantly decreased at dorsi flexion(F=10.349, p=.001), inversion(F=3.950, p=0.31). 2. Subtalar joint ROM test was significant difference measured neutral position(F=10.173, p=.001) and forefoot angle to rearfoot(F=5.417, p=.011). 3. Posture sway test was significantly difference overall index(F=4.666, p=.019) and medial/lateral index(F=6.685, p=.005). Consequently, this study suggests that the proprioceptive exercise better than strength exercise improved the sensory ability of joint position sense, subtalar joint ROM and posture sway.

기능적 발목 불안정성 축구선수들의 발목 관절위치감각, 근력 및 기능적 능력

천성용(Chun Sung-Yong),최옥진(Choi Ok-Jin) 한국체육과학회 2009 한국체육과학회지 Vol.18 No.3

The purpose of this study was to investigate the effect of the ankle joint position sens, strength and functional ability of the soccer player with functional ankle instability. Fifty eight male soccer players divided into two groups: functional ankle instability group(FAI, n=29) and stable ankle group(Con, n=29). They could accept the physical examination and Questionnaire. In this study, joint position sense, %bodyweight peaktorque, postural sway, and functional ability were measured. The results are as follows; 1. Joint position sense was significant difference between Con and FAI(p<.001). 2. Isokinetic strength was significant difference between Con and FAI(p<.0l) of dorsiflexion and inversion, at angular velocity 3O%ec and of plantar flexion and eversion at angular velocity 120°/sec. 3. postural sway was no significant difference between Con and FAI. 4. Functional test of lower limb was no significantly difference between Con and FAI. Consequently, this study suggests that muscle activity of the lower leg muscles, gastrocnemius muscle, soleus muscle, peroneus muscle, tibialis anterior muscle is decreased of the soccer player with functional ankle instability.

효율적인 에너지 절감을 위한 센서 LED 스탠드 개발

천성용(Sung-Yong Chun),신지예(Ji-Yea Shin),박신원(Shin-Won Park),이화조(Hwa-Cho Yi),이찬수(Chan-Su Lee) 한국조명·전기설비학회 2012 조명·전기설비학회논문지 Vol.26 No.9

In this paper, we present a new lighting control method considering ambient light in addition to the required lighting illumination for efficient energy saving of a LED stand. We estimate accurate environmental illuminance using a cheap illuminance sensor by modeling measured- and actualilluminance using quadratic polynomial approximation. The relation between PWM(Pulse Width Modulation) duty ratio and illuminance intensity is modeled by a linear model. Illumination of the LED stand is controlled by estimating the difference of required illumination and the estimated ambient illumination. The developed LED stand has reduced electric energy consumption compared with a conventional manually controlled LED stand with the same lighting source. In addition, human subject evaluation shows that the LED stand, which is applied the proposed method, is more satisfactory than conventional ones since the proposed automatic controlled illumination produce more accurately required lighting and it is convenient.

금융소비자 특성별 금융서비스 중요 요인에 대한 탐색 연구

천성용(Sung Yong Chun) 한국경영과학회 2011 한국경영과학회지 Vol.36 No.4

There have been some research papers on financial services marketing, but there are only few exploratory studies that analyze characteristics of financial consumers in Korea. This study examines, based on FGI and web survey results, which factors consumers consider more important when choosing their financial services. I found that ‘product profitability’ is the most important factor when consumers choose their financial services, followed by ‘relational benefits’, ‘convenience’, ‘product diversity’, ‘company stability’, ‘branch satisfaction’, and ‘social responsibility’ in order of importance. The study also showed that there are differences in perception of these important factors depending on the types of consumers such as gender, age, size of financial assets, degree of risk-taking, and main financial company they are using. This study hopefully provide implications to marketing managers in financial services that they could decide which factors they have to focus on more when planning marketing strategies. Another objective of this study is to provide useful insights to the future researchers in financial services marketing.

일반인과 엘리트 축구선수의 신체조성과 무릎 및 발목관절의 등속성 근력 특성 비교분석

천성용(Chun, Sung-Yong),전경규(Jeon, Kyoung-Kyu),박동수(Park, Dong-Soo) 한국체육과학회 2012 한국체육과학회지 Vol.21 No.3

The aim of this study was to provide fundamental study in exercise program development for athletic performance and injuries prevention of football players. For this study case, 33 subjects(control group; 10, collegiate football players; 12, professional football players; 11) were measured with body composition the maximum isokinetic strength tests of knee and ankle. The results were as follows; For football players’ postural stability showed to use accurate passing and scoring kick a professional football player group than the collegiate football player group tended to be better. These results appeared strength of knee flexion increases the stability of the position. In addition, Eversion of the ankle joint increases the stability of the support, and dorsiflexion and inversion of the ankle joint helps to correct kick for football players. From these results, in order to the athletic performance should be applied function enhancement program of knee and ankle joint strength to the collegiate football players.

KB Star*t 통장의 금융 고객 마케팅 전략

천성용(Sung Yong Chun),이동진(Dong Jin Lee) 한국경영학회 2011 Korea Business Review Vol.15 No.3

지금까지 금융산업 마케팅의 중요성은 다른 산업에 비해 상대적으로 낮은 편이었다. 그러나, 최근 자본시장법 등 으로 인해 금융환경이 빠르게 변화하였고, 더욱 까다로워진 고객의 금융니즈 역시 매우 다양해졌다. 이제는 금융산 업도 다른 산업처럼 마케팅이 매우 중요한 분야가 되었다. 본 사례는 국내 리딩뱅크 중 한 곳인 KB국민은행의 대표 적 성공상품 ``KB Star*t 통장``의 상품개발 및 마케팅 전략을 분석하였다. KB국민은행은 그동안 금융시장에서 낮은 수익성으로 인해 소외받았던 젊은 고객층을 우대해준다는 역발상과 차별화로 KB Star*t 통장을 개발하였다. 이를 통해 특별한 대우를 받지 못했다고 생각하고 있던 해당 고객들에게 심리적으로도 긍정적인 영향을 미쳤고, KB 브랜 드에 대한 선호도 또한 높일 수 있었다. 본 사례는 KB Star*t 통장의 성공적인 신상품 출시 전략을 소개하고, 향후 보다 효과적인 금융마케팅을 실행하기 위한 시사점을 제안하는 것을 목표로 한다. With the increased competition in the financial market, it is more important for banks to be responsive to customers` needs. This paper analyzes a savings product by KB, the leading bank in Korea. The KB Star*t savings account is different from other traditional savings account in two ways. First, this product specifically targets traditionally under-served young customers with the development of a long term customer relationship in mind. Second, the savings product offers a high interest up a certain amount and then a low rate for amount after that. Most previous bank savings products have offered a higher interest rate for larger amount of deposit. The case details the development process of a new bank product and the authors discuss managerial implications for marketing strategies for individual bank customers.

태권도 수련이 신체조성 및 기초체력에 미치는 영향

천성용(Sung Yong Chun),최영옥(Young Wook Choi),박동수(Dong Soo Park) 한국체육교육학회 2013 한국체육교육학회지 Vol.18 No.1

본 연구는 규칙적인 태권도 수련이 일반 대학생들에 있어서 신체조성과 기초체력에 미치는 영향을 알아보기 위해 J지역 S대학에 재학 중인 대학생들 대상으로 평소 운동 경험이 없는 대학생(대조군 10명)과 지속적으로 태권도 수련을 하고 있는 대학생(실험군 10명), 총 20명을 선정하여 실시하였다. 통계는 집단 간 차이를 알아보기 위해 PASW Statistics 18.0 통계프로그램을 이용하여 각 변인별 평균값과 표준편차를 구하였으며, 집단 간 차이검증은 t-검정을 실시하였다 이때 모든 유의 수준은 p<.05로 설정하였다. 연구 결과 신체조성에서 제지방량이 태권도 수련집단에서 유의하게 높게 나타났으며(p<.05), 기초체력 검사에서는 유연성, 서전트 점프, 전신반응과 윗몸일으키기에서 태권도 수련 집단이 유의하게 높은 것으로 나타났다(p<.01). 등속성 신전근력 검사에서는 각속도 180°/sec(p<.05), 굴곡근력 검사에서는 각속도 60°/sec (p<.05)와 각속도 180°/sec(p<.01)에서 태권도 수련 집단이 유의하게 높게 나타났다. 등속성 신전/굴곡 최대근력비에서는 각속도 60°/sec 왼발에서만 유의하게 높게 나타났다(p<.05). 따라서 이 연구 결과 지속적인 태권도 수련은 근육량의 증가와 기초체력 능력을 향상시키는데 효과적인 것으로 사료되며, 하지 근육의 안정성과 운동 능력을 향상시키기 위해 무릎 굴곡근의 발달이 높은 것으로 사료된다. This research explored the impact of Taekwondo training on the body composition and basic physical strength of university students. To proceed this study, one comparison group for not exercising usually and the other experiment group for training Taekwondo continuously were employed from ``S`` university in ``J`` area. To see the group difference, mean score and standard deviation were calculated and then t-test was executed by using PASW Statistics 18.0 program. All significance level was set as(p<.05). The results revealed that the training group significantly showed higher score(p<.05) at overall fat amount. At the test of basic physical strength, the Taekwondo training group also scored more at flexibility, sergeant jump, whole body reaction, and sit-up(p<.01). The Taekwondo training group scored significantly higher at angular velocity 180°/sec(p<.05) condition of isokinetic extension muscle strength test and also at angular velocity 60°/sec(p<.05) and 180°/sec(p<.01) condition of bend muscle strength. At the test of isokinetic extension/bend maximum muscle strength, only the conditon of angular velocity60°/sec left foot showed significantly higher score(p<.05). Therefore, the research results proved that continuous Taekwondo training would be effective to increase muscle mass and to improve basic physical strength capicity. Furthermore, the training group`s knee flexural muscle could develop more in stabilizing lower limb muscle and in improving exercise capacity.

금융 소비자 만족도에 영향을 미치는 요인

천성용(Sung Yong Chun) 한국경영과학회 2013 韓國經營科學會誌 Vol.38 No.1

With the growing importance of the financial industry, financial service companies need to better understand the behavior of consumers and develop effective marketing strategies accordingly. This study examines the key determinants in the satisfaction of financial services customers. According to the study, “satisfaction with branches,” “product profitability,” “corporate stability,” “convenience” and “relational benefits” have an impact on the satisfaction levels. In particular, “branch satisfaction” was a vital factor for bank-centered customers, while “product diversity” was a key for securities-centered customers. This study will hopefully benefit not only financial companies, but also regulators and authorities in the finance industry.

모바일 카메라 기기를 이용한 손 제스처 인터페이스

천성용(Sung Yong Chun),이찬수(Chan-Su Lee) 한국정보과학회 2009 한국정보과학회 학술발표논문집 Vol.36 No.2A