스포츠 이벤트의 혼잡지각과 참여자의 고객만족, 재방문의도, 서비스품질과의 관계

장건희(Jang Gun-Hee) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.3

This study is aimed at inquire into the relations between perception of crowdedness of a sports event participant and customer behavioral intention. As for the object of this study, this research set up 540 participants in the International Marathons(S International Marathon, D International Marathon, and G International Marathon)as its population. In relation to its data processing, this study tested individual hypotheses after confirming the test of “goodness of fit” for a model using SPSSWIN Ver.14.0 and AMOS 7.0; its results are as follows: First, the higher a sports event participant’s perception standard of crowdedness is, there appeared a positive effect on customer satisfaction. Second, the higher a sports event participant’s perception standard of crowdedness is, there appeared a positive effect on customers’ re-visit intention. Third, the higher a sports event participant’s perception standard of crowdedness is, there appeared a positive effect on the perception of service quality offered by a sports event.

생활체육 참여자의 내적,외적동기와 운동몰입, 운동만족과의 관계

장건희(Gun Hee Jang),조태수(Tae Soo Cho) 한국사회체육학회 2010 한국사회체육학회지 Vol.0 No.42

The purpose of this research is to make an overall analysis of positive sports activities of the participants in Sports for all by positively analyzing the relations between sports commitment and sports commitment through the internal & external motives that are evaluated by the consistency between the results coming out of desires and sufficiency pursued by individual participants in sports for all. This research set the participants in sports activity at sports facilities for all located at Daejeon metropolitan city as its survey target and extracted the sample through convenience sampling method. As for data processing, this research made a frequency analysis, exploratory analysis, reliability analysis, and correlation analysis using SPSSWIN Ver.14.0 and could elicit the research results as follows through the confirmatory factor analysis and structural equation model analysis using AMOS 7.0. First, the internal motive of the participant in sports for all was found to have a statistically positive effect on sports commitment. Second, the external motive of the participant in sports for all was found to have a statistically positive effect on sports commitment. Third, the sports commitment of the participant in sports for all was found to have a statistically positive effect on satisfaction with sports.

벤쿠버 동계 올림픽 관련 방송 보도 연구

장건희(Jang Gun-Hee) 한국체육과학회 2010 한국체육과학회지 Vol.19 No.4

This study intended to check on the value and directionality of sports journalism through examination of news programs covering Vancouver Winter Olympic and has come up with following conclusions. Firstly, news reports covering Vancouver Winter Olympic had their focus consistently on the results of games. They had no regards whatsoever to international politics surrounding the Olympic game nor did they take any interest in cultural and social significance associated with the Olympic venue. The broadcast news reports were only limited to the results of popular games and ensuing analysis thereof. Secondly, reports concentrated only on gold medalists. Despite the fact that Olympic is an event meant to realize its spirit of peace and harmony by virtue of sports, our news reports centered heavily on Korean gold medalists. Thirdly, news reports covering Vancouver Winter Olympic disclosed lack of substantial balance among different news programs covering respective games. More specifically, some games were reported more often than not via stand-alone programs while others covered only as part of general report programs. This resulted in differences in terms of the quality of news programs. Fourth, there were cases in which provocative languages were used in reports. As mentioned earlier, sports journalism takes it granted for dramatic elements to a certain extent. Even such case, however, should not deviate from the general principles of journalism.

Waviness가 있는 볼베어링으로 지지된 회전계의 동특성해석 (I) -진동 해석-

정성원,장건희,Jeong, Seong-Weon,Jang, Gun-Hee 대한기계학회 2002 大韓機械學會論文集A Vol.26 No.12

This research presents an analytical model to investigate vibration due to ball bearing waviness in a rotating system supported by two or more ball bearings, taking account of the centrifugal force and gyroscopic moment of the ball. The waviness of rolling elements is modeled by the sinusoidal function, and it is incorporated into the position vectors of the race curvature center. The Hertzian con tact theory is applied to calculate the elastic deflection and nonlinear contact force while the rotor has translational and angular motions. Both the centrifugal force and gyroscopic moment of the ball and the waviness of the rolling elements are included in the kinematic constraints and force equilibrium equations of a ball to derive the nonlinear governing equations of the rotor, which are solved by using the Runge-Kutta-Fehlberg algorithm to determine the new position of the rotor. The proposed model is validated by the comparison of the results of the prior researchers. This research shows that the centrifugal force and gyroscopic moment of the ball plays the important role in determining the bearing frequencies, i.e. the principal frequencies, their harmonics and the sideband frequencies resulting from the waviness of the rolling elements of ball bearing. It also shows that the bearing vibration frequencies are generated by the waviness interaction not only between the rolling elements of one ball bearing but also between those of two or more ball bearings constrained by the rotor.

자석 형상 최적화를 통한 축방향 이상 횡자속형 전동기의 토크 특성 향상에 관한 연구

안희태(Ahn, Hee-Tae),장건희(Jang, Gun-Hee) 한국소음진동공학회 2009 한국소음진동공학회 논문집 Vol.19 No.10

Transverse flux machine(TFM) has been developed to drive a machine of large input power at low-speed. However, it has complicated structure and large torque ripple due to its inherent structure. In this paper the characteristics of torque of a rotatory two-phase TFM are analyzed by using the 3-dimensional finite element method and optimal design. This research shows that one of the effective design variables is the skew angle of permanent magnet. The skew angles of permanent magnet are optimized by using a genetic algorithm. It also shows that the proposed optimal skew magnet not only increases average torque but also decreases torque ripple of a rotatory two-phase TFM.

상업체육시설의 관계마케팅이 중년층 이용자의 관계품질과 행동의도에 미치는 영향 연구

조태수 ( Tae Soo Cho ),장건희 ( Gun Hee Jang ) 한국스포츠산업경영학회 2009 한국스포츠산업경영학회지 Vol.14 No.3

이 연구는 관계마케팅의 이론을 토대로 중년층의 관계품질과 행동의도에 미치는 효과를 분석하여 중년층 이용자에게 필요한 서비스를 제공하고 실질적인 편의를 제공함과 동시에 상업체육시설 운영자에게 필요한 성공적인 마케팅 전략을 세울 수 있는 학문적인 기초자료를 제시하는데 연구의 목적이 있다.이러한 연구목적을 달성하기 위하여 다음과 같은 통계분석 방법을 활용하였다. SPSS12.0K 프로그램을 통하여 빈도분석과 Cronbach`s α, 탐색적 요인분석(exploratory factor analysis: EFA), 상관관계분석(correlation Analysis)을 실시하였으며, 가설 검증을 위하여 AMOS 7.0을 이용하여 확인적 요인분석(confirmatory factor analysis: CFA)과 구조방정식모형분석(structural equation model analysis: SEM)을 실시하였으며, 다음과 같은 결론을 도출 하였다. 첫째, 상업체육시설이 제공하는 관계마케팅의 신뢰성은 운동만족에 긍정적인 정(+)의 영향을 미쳤다. 둘째, 상업체육시설이 제공하는 관계마케팅의 확신성은 운동만족에 긍정적인 정(+)의 영향을 미쳤다. 셋째, 상업체육시설이 제공하는 관계마케팅의 유형성은 운동만족에 긍정적인 정(+)의 영향을 미쳤다. 넷째, 상업체육시설이 제공하는 관계마케팅의 공감성은 운동만족에 긍정적인 정(+)의 영향을 미쳤다. 다섯째, 상업체육시설이 제공하는 관계마케팅을 만족한 중년층 이용자의 재방문의 도에 긍정적인 정(+)의 영향을 미쳤다. 여섯째, 상업체육시설이 제공하는 관계마케팅을 만족한 중년층 이용자의 구전의도에 긍정적인 정(+)의 영향을 미쳤다. This research aims at offering services needed for the middle-aged users, offering practical convenience and at the same time suggesting academic basic data that can enable sports industry operator to set up a successful marketing strategy they need by analyzing the effect on the related quality and behavioral intention of the middle aged bracket. To fulfill such research purposes, this study used statistical analysis method as follows: This study conducted frequency analysis, Cronbach``s α, exploratory factor analysis[EFA], and correlation Analysis through SPSS12.0K program; in addition, for hypothesis test, this study conducted confirmatory factor analysis[CFA] and structural equation model analysis[SEM] using AMOS 7.0, drawing the conclusions as follows: First, reliability in the related marketing offered by sports industry had a positive effect on exercise satisfaction. Second, confidence in the related marketing offered by sports industry had a positive effect on exercise satisfaction. Third, typicality of the related market offered by sports industry had a positive effect on exercise satisfaction. Fourth, sympathy with the related marketing offered by sports industry had a positive effect on exercise satisfaction. Fifth, a exercise satisfied with the related marketing offered by sports industry had a positive effect on middle-aged users intention of re-visiting. Sixth, a exercise satisfied with the related marketing offered by sports industry had a positive effect on middle-aged users intention of giving information by word of mouth.

유체동압베어링을 사용하는 하드디스크 드라이브 스핀들 시스템에서 발생하는 정전기 방전에 관한 실험적 연구

강민구(Kang, Min-Gu),장건희(Jang, Gun-Hee) 한국소음진동공학회 2006 한국소음진동공학회 논문집 Vol.16 No.1

This paper introduces the mechanism of the ESD(electrostatic discharge) in the HDD spindle system using FDBs(fluid dynamic bearings). When a HDD(hard disk drive) spindle system is rotating, triboelectric charging occurs in the FDBs through the friction between the lubricant and the rotating shaft or between the lubricant and stationary sleeve. And this electrostatic charge is accumulated in the rotating parts of the HDD spindle system because they are insulated from the ground by the lubricant. This research shows experimentally that the behavior of electric charge and discharge in the FDB spindle system is the same as that of a capacitor. It also measures the electrostatic voltage difference between the rotating and stationary parts in the FDB spindle system due to the change of humidity, supporting load and motor speed. This research shows that the control of ESD is required in the HDD spindle system using FDBs, because the electrostatic charge accumulated in the FDB spindle system may cause the breakdown damage of the GMR head and data loss consequently.

수학적 섭동법을 이용한 저널과 스러스트가 연성된 유체 동압 베어링의 동특성 계수 해석

이상훈(Lee, Sang-Hoon),장건희(Jang, Gun-Hee) 한국소음진동공학회 2006 한국소음진동공학회 논문집 Vol.16 No.7

This paper proposes a method to calculate the stiffness and the damping coefficients of the coupled journal and thrust bearings. The Reynolds equations and their perturbation equations are transformed to the finite element equations by considering the continuity of pressure and flow at the interface between bearings. The Reynolds boundary condition is used in the numerical analysis to simulate the cavitation phenomena. The dynamic coefficients of the proposed method are compared with those of the numerical differentiation of the loads with respect to finite displacements and velocities of bearing center. It shows that the proposed method is more accurate and efficient than the differentiation method.

지지구조와 헤드-서스펜션-액추에이터의 유연성을 고려한 HDD 유연 회전 디스크-스핀들 시스템의 유한 요소 고유 진동 해석

서찬희(Seo, Chan-Hee),이호성(Lee, Ho-Sung),장건희(Jang, Gun-Hee) 한국소음진동공학회 2007 한국소음진동공학회 논문집 Vol.17 No.1

This paper presents a finite element method to analyze the free vibration of a flexible HDD composed of the spinning disk-spindle system with fluid dynamic bearings(FDBs), the head-suspension-actuator with pivot bearings, and the base plate with complicated geometry. Experimental modal testing shows that the proposed method well predicts the vibration characteristics of a HDD. This research also shows that even the vibration motion of the spinning disk corresponding to half-speed whirl and the pure disk mode are transferred to a head-suspension-actuator and base plate through the air bearing and the pivot bearing consecutively. The proposed method can be effectively extended to investigate the forced vibration of a HDD and to design a robust HDD against shock.

스핀들 회전축계의 기전 연성 해석을 이용한 모바일 HDD의 자유 낙하 특성 및 감지에 관한 연구

박상진(Park, Sang-Jin),장건희(Jang, Gun-Hee),김철순(Kim, Cheol-Soon),한재혁(Han, Jae-Hyuk) 한국소음진동공학회 2006 한국소음진동공학회 논문집 Vol.16 No.1

This research investigates the electromechanical characteristics of a spindle motor in a free-falling mobile hard disk drive before unexpected shock. Electromechanical simulation includes a time-stepping finite element analysis of the magnetic field in a speed controlled brushless DC motor and dynamic analysis of the stationary and rotating part linked by the fluid dynamic bearing under the free-falling condition. Analysis results show that the dynamic characteristics of the rotating spindle system during free-falling state have an effect on the relative motion between the stationary and rotating part of HDD. It results from the variation of reaction force in the bearing area due to the gravity force exerted on the rotating part of HDD, and the free-falling condition can be detected by observing the signal of the spindle motor and disk-head interface without using an accelerometer.