고속 솔레노이드 밸브 제어 나노리터급 액적 분주를 통한 액체혼합방법

박성제(Sung Jea Park),차경제(Kyoung Je Cha),권태헌(Tai Hun Kwon) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11

In this study, an active mixing method is proposed utilizing a nanoliter-level dispensing system which is controlled by high speed solenoid valves. In the nanoliter-level dispensing system, pressurized air transfers liquids from a reservoir to nozzles through tube via high speed solenoid valves, thus injecting liquid droplets into a well. The droplet volume depends on the air pressure, nozzle size and more importantly on the opening time of solenoid valves, which is controlled by a circuit with the help of computer through serial port. Finally a new mixing method is to inject two or more different liquids through different slanted nozzles, simultaneously or alternatingly into a well making use of the so-developed dispensing system. This study also reports successful mixing performance by this new mixing method.

Web2.0기반 스포츠 웹사이트의 집단지성 및 지속사용의도에 관한 구조모형 검증

박성제(Park Sung-Je),이제욱(Lee Jea-Woog),박용범(Park Yong-Bum) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.1

The current web paradigm is being desired and executed, too, a flow of web available for users' participation and information sharing, not what is offered unilaterally web service or contents in the past. This changed platform is called Web2.0 Platform. The passive internet users in the past are extending sphere now as 'information producer. The purpose of this study is to verify correlation and causality in each factor such as the Collective Intelligence formation among users, and the recognized usability, satisfaction and continuance intention felt by an individual on the current Web2.0 sports web site, which is changing in this way. The data collection was carried out Web survey targeting internet users of the sports web site based on Web2.0 characteristics, which were suggested in this study. Correlation and causality among factors in each were indicated to be mostly significant due to Collective Intelligence. In conclusion, the Collective Intelligence is the phenomenon based on information society, which fundamentally gives effect to usefulness and desire satisfaction with contents that users feel on site, and to activation of site. This can be said to be effect of coheision in site users that a concept of Collective Intelligence gives.

국내 스포츠 사회과학 분야 통합 학술 지식지도(Knowledge Map) 분석

박성제 ( Sung-je Park ),이제욱 ( Jea-woog Lee ) 한국스포츠정책과학원(구 한국스포츠개발원) 2016 체육과학연구 Vol.27 No.3

본 연구는 국내 스포츠 사회과학 학술지의 10년 간 지식구조의 흐름을 살펴보기 위해 스포츠산업경영학회지, 스포츠교육학회지, 스포츠사회학회지, 스포츠심리학회지, 여가레크리에이션 학회지를 대상으로 소셜 네트워크 분석기법 중 커뮤니티 분석을 통해 지식지도를 도출하였다. 분석결과 스포츠 사회과학 분야 통합 지식지도는 5개의 그룹으로 분리되었으며, 각 그룹은 본 연구의 대상인 5개 학술지 연구영역의 주제키워드군의 지식구조와 유사하게 도출되었다. 이러한 결과와 동시에 각 관계마다 차이는 있지만 전체적인 그룹 간 주제키워드의 교류관계를 확인할 수 있었다. 특히, 스포츠산업경영학 연구영역의 주제키워드 중 일부가 여가레크리에이션과 스포츠사회학 연구영역으로 전이되어 있으며, 스포츠사회학은 스포츠산업경영, 스포츠심리학과 밀접한 교류관계를 나타내고 있다. 스포츠심리학은 대부분의 타 그룹과 연결관계를 이루며, 인간행동을 이해하는 심리학적 변인의 넓은 활용성을 확인할 수 있었다. 한편, 여가레크리에이션학 영역은 주로 스포츠심리학, 스포츠경영학 주제키워드와 매우 높은 연구관계를 나타내고 있으나 보다 독자적인 연구 개념의 필요성 또한 시사하고 있다. 스포츠교육학 분야는 특성상 고립되어 있지만 스포츠심리학과의 교류를 이루고 있으며, 체육학 페다고지 개념의 접근을 통한 연구영역의 확대를 모색할 수 있다. To examine the flow of knowledge structure in Korean journals of sport and social sciences over the last 10 years, this study has derived a knowledge map by conducting community analysis, one of the social network analysis methods, on Korean Journal of Sports Industry Management, Korean Journal of Sport Pedagogics, Korean Journal of Sport Sociology, Korean Journal of Sport Psychology and Korean Journal of Leisure and Recreation. According to the analysis result, the integrated knowledge map for the field of sport and social sciences was classified into 5 groups and these groups were derived to be similar to the knowledge structure of the keyword groups for the research topics of the five journals targeted by this study. Along with this result, at the same time, it has been confirmed that most of the groups shared keywords with each other. Especially, some of the keywords for the research topics of sports industry management have transferred to the research topics of leisure and recreation and those of sport sociology. Sport sociology has been revealed to be closely related to sports industry management and sport psychology. In the case of sport psychology, it has been confirmed that it is related to most of the other groups and the psychological variables for understanding human behavior can be widely used. It shows that leisure and recreation is highly related to sport psychology and sport management in terms of keywords for research topics but it is suggested that it also needs its own independent research topics. Sport pedagogics, by its nature, is an isolated field but interacts with sport psychology and attempts can be made to expand its research topics through an approach based on the concept of pedagogy for physical education.

텍스트마이닝과 네트워크 분석을 통한 한국체육사 연구의 시대별 지적구조 분석

박성제 ( Park Sung-je ),이제욱 ( Lee Jea-woog ) 한국체육사학회 2017 체육사학회지 Vol.22 No.2

본 연구는 텍스트마이닝과 네트워크 분석을 활용하여 국내 체육사 연구의 지식구조를 도출하고 연구동향을 분석하는데 목적이 있다. 연구범위는 한국체육사학회지의 창간호부터 20년간(1996∼2015) 발표된 논문으로 설정하였다. 연구절차는 논문의 주제키워드를 추출 후 텍스트마이닝과 네트워크 분석을 통해 지식구조를 도출하였다. 분석결과 현대체육사의 지식 구조는 대부분의 주제키워드가 연구영역 구분 없이 긴밀한 관계를 맺고 있는 `좁은 세상 네트워크`형태를 띠고 있는 반면, 과거 시대의 지식구조는 연구영역과 주제키워드 활용이 한정적임을 알 수 있었다. 또한, 지식구조를 통해 연결 관계가 없는 키워드 간 주제접근의 시도와 이를 촉진하는 높은 매개중심성, 근접중심성의 주제키워드를 탐색하는 것은 체육사학 주제영역의 확대를 모색하는 방법 중 하나로 나타났다. 본 연구결과는 정량적 역사연구에서 기대할 수 있는 새로운 시각의 역사적 통찰가능성을 제시하고 있다. 이는 `빅데이터 인문학`적 관점에서 볼 때 분석결과의 의미를 더욱 윤택하게 부여할 수 있는 역사가의 능력과 역할이 더욱 중요해지고 있음을 시사하고 있다. The purpose of this study is to derive the knowledge structure of physical education history and to analyze the research trend by using text mining and network analysis. The range was set up as a paper published for 20years from the first issue of Korean Journal of Physical Education history. The data was extracted from the theses of the thesis and used in the network analysis for deriving knowledge structure through text mining process. As a result of analysis, modern physical education history has a `Small World Network` form in which most keywords are closely related to each other. In addition, it is one of the ways to explore the theme of the theme of the physical education history by searching for the theme of high mediation, proximity. Through this study, it is expected that the possibility of historical insight of new perspectives that can be expected from quantitative history research as well as the expansion of domestic history research can be expected to increase the capacity and role of historian from the perspective of `big data` humanities.

텍스트마이닝과 소셜네트워크 분석을 통한 스포츠 분야 학술 Knowledge Map 구축과 활용

박성제(Park, Sung-Je),이제욱(Lee, Jea-Woog) 한국체육과학회 2017 한국체육과학회지 Vol.26 No.4

Knowledge Map utilizes the mathematical characteristics of the data internally produced in the phenomenon of simultaneous occurrence (Co-occurrence) such as the subject keyword, the citation relation. Through mathematical analysis, we construct each simultaneous occurrence relation, and its form is a method showing visually mapping the structure of knowledge. We cried out internal reasonable problems that may occur at the stage of text mining necessary in the course of developing research methods and applied various functions of social network analysis to Knowledge Map construction to investigate trends in academic research It is necessary to further diversify the point of view. It can also be used as an indicator for effective execution of research on Knowledge Map in the natural sciences field which has not been tried yet. In this research, as a methodology of research that can accelerate the research approach of patent analysis of sports technology as a quantitative index that can further strengthen objectivity about the trend of academic research, text mining and social network To build a Knowledge Map and to utilize it.

소셜 네트워크 분석(Social Network Analysis)을 활용한 한국스포츠심리학 Knowledge Map 분석

박성제(Park, Sung-Je),이제욱(Lee, Jea-Woog) 한국사회체육학회 2016 한국사회체육학회지 Vol.0 No.66

The purpose of this study is to explore the flow of academic status and to establish the Knowledge map of the Keyword retrieved from papers in the ‘Journal of Korean sport psychology’ for 25 years. Research scope included keyword extracted from 520 papers in the area of “Sport Psychology” published in the Journal of ‘Korea Society of Sport Psychology’ from 1990 to 2014. Data pre-processing of extracted keyword was performed by Clustering and Simultaneous emergence matrix. Knowledge map was constructed by Social Network Analysis with extracted data. In this study, data pre-processing of extracted keyword was performed by Clustering and Simultaneous Emergence Matrix. Knowledge Map was constructed by Social Network Analysis with extracted data. We conducted the Word Cloud Analysis by utilizing R statistical package in order to visualize the frequency of subject keywords. We conducted the Centrality Analysis by pattern through Net Miner 4.2 in order to identify subject keyword’s intrinsic function and intellectual structure. We also conducted Community Analysis which is one of the social network analyses, thru Net Miner program in order to derive research area by each period. The results of analysis indicated that the subject keywords and the research concepts that were related to ‘motivation’, ‘emotion’ and ‘personality characteristics’ were playing the major role in sports psychology research. Also in the process of exploring these major theories, we could have an insight on entire research trend of how various psychological theories had newly emerged, declined or changed throughout each period. As a further study, examining research trend with a variety of view by identifying not only theory of paper but also citations and joint studies by authors could be an approach which can strengthen the insight of domestic sport psychology research trends.

스포츠 가상현실 콘텐츠에 대한 혁신저항과 수용

이제욱(Lee, Jea-Woog),박성제(Park, Sung-Je) 한국체육과학회 2016 한국체육과학회지 Vol.25 No.6

Purpose on this study is to recognize factors that influence the process how users embrace or resist virtual reality sports content, innovative technique and products. We conducted survey on 314 people from relevant online communities and analyzed the result. Study model verification was path analyzed with AMOS 22.0 statistical program and the result is as follow; First of all, the factor that affects content users to show innovation resistance manner is cognition on danger, and cognized advantage is the factor that reduce innovation resistance manner. Second of all, the factor that shows positive effect on acceptance is cognized advantage, and cognition on danger was drawn as the factor that hinder acceptance. Third of all, innovation resistance influence acceptance of virtual reality sports in a negative way, but this would be considered as general early stage of the process to embrace new technology and product at the market. Finally, cognition on complexity does not affect innovation resistance and acceptance. This study refutes the early stage phenomenon that only emphasizes the positive factors of innovative products and seeks for balanced perspective to consider acceptance as well as resistance.

연속 구배형 전도성 표면 구현을 위한 탄성중합체 코팅에 관한 연구

라문우,윤길상,박성제,La, Moon-Woo,Yoon, Gil-Sang,Park, Sung-Jea 한국금형공학회 2019 한국금형공학회지 Vol.13 No.3

Recently, studies on the development of flexible electronic devices by combining flexible materials and a conductor have been actively performed as interest in wearable devices. Especially, carbon nanotubes (CNT) or graphene coating have been used to construct a circuit to induce improvement in flexibility and rigidity. Various technologies have been developed in the surface coating of conductive materials, which are key to the manufacture of flexible electronic devices. Surface coating products with 3D coating and micro-patterns have been proposed through electrospinning, electrification, and 3D printing technologies. As a result of this advanced surface coating technology, there is a growing interest in manufacturing gradient conductive surfaces. Gradient surfaces have the advantage that they are adapted to apply a gentle change or to inspect optimum conditions in a particular region by imparting continuously changing properties. In this study, we propose a manufacturing technique to produce a continuous gradient conductive surface by combining a partial stretching of elastomer and a conductive material coating, and introduce experimental results to confirm its performance.

랩-온-어-디스크를 위한 실시간 영상 조절 및 이미지 획득 시스템

라문우(Moonwoo La),박상민(Sang Min Park),박성제(Sung Jea Park),김동성(Dong Sung Kim) Korean Society for Precision Engineering 2013 한국정밀공학회지 Vol.30 No.11

LIGA 공정을 이용한 사인 그루브 패턴 제작 및 줄기세포 정렬에 응용

이정수(Jeong Su Lee),박성제(Sung Jea Park),김동성(Dong Sung Kim) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11

This study proposed a fabrication method based on LIGA process for sinusoidal groove patterns and utilized the groove patterns as a culture platform for the alignment of stem cells. The sinusoidal groove patterns of polystyrene were produced with the assembled metal mold inserts through the hot embossing process. To fabricate the mold inserts, deep X-ray lithography and subsequent nickel electroforming were carried out. Stem cells cultured on the patterns were aligned along the groove direction and showed different alignment behavior according to wave lengths of the sinusoidal groove patterns.