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김판규 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.6
The purpose of this study was identify the relationship between self-body esteem and interpersonal relation disposition in the elementary students. The instrument for data collection was a questionnaire in which self-body esteem consisted of questions regarding as identified by Park et(1999) and interpersonal relation disposition consisted of questions regarding as identified by Seo(1995) and Song(1995). 600 subjects were selected from several elementary schools in Seoul by the stratified cluster random sampling method. Among these selected subjects, 573 responded, and data analyses consisted of employing descriptive statistics, one-way ANOVA, t-test using SPSS/PC version 11.0. The following results were obtained: First, self-body esteem and interpersonal relation disposition differs statistically and partially according to socio-demographic variance of elementary students. Second, interpersonal relation disposition differs statistically and significantly according to self-body esteem of elementary students.
김종해,이동헌,이철우,김중기,김동희,조규판 嶺南大學校 工業技術硏究所 1998 工業技術硏究所論文集 Vol.26 No.2
This paper proposes a double resonant high frequency inverter which reduces the distribution of the switching current. The analysis of the proposed circuit is generally described by using the normalized parameters. Also, the principle of the basic operation and the characteristics of driving were estimated by the switching frequency and the load parameters. And the data for the design were got by the characteristic values obtained from the characteristic estimation. At the same time the example of the design method was proposed. In addition, Comparing the theoretical waveforms to the experimental waveforms certified the operating characteristics of the proposed Inverter. It is certain that the proposed circuit will be used and expanded in the high frequency power supplies like induction heating systems.
운동행동 변화단계별 건강관련체력 : 범이론적 변화모형의 적용
김판규 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.4
The purpose of this study was to compare collegiate students' health-related physical fitness based on exercise stage classification (precontemplation stage, contemplation stage, preparation stage, and action stage) according to the Transtheoretical Model. For this purpose, the analysis of the materials was conducted with the programs of SPSS/PC+11.0 and the method of the statistical analysis used in one-way ANOVA. In the study 125 collegiate students(male=72 and female=53) completed the questionnaire for Transtheoretical Model and health related physical fitness test. Respectively, stages of change of students was precontemplation stage(18.3%), contemplation stage(34.4%), preparation stage(28.8%), and action stage(18.3). The results of this study were following. The first, transtheoretical model structures (exercise self-efficacy, pros of exercise, processes of change) according to stages of change were significantly different among stages of change excluding cons of exercise, the second, strength endurance, flexibility, aerobic capacity on health related physical fitness were significantly different among stages of change, but muscular strength and %body fat were no significantly different.
단열양생을 이용한 고강도 콘크리트 압축강도 추정에 관한 실험적 연구
조규현,김제섭,전판근,백민수,김우재,정상진 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1(구조계)
The present study is a basic experiment on the estimation of the compressive strength of high strength concrete, aiming at estimating the compression strength of mass test pieces of high strength concrete by giving the temperature hysteresis of the mass test pieces to managerial test pieces. Different from ordinary concrete, high strength concrete generally shows the high rise of temperature caused by hydration heat inside the concrete. It is known that, in mass concrete, thermal stress occurs due to the difference in temperature between the inside and the outside, which causes a significant difference in compression strength between structure beams and managerial test pieces. It is also reported that there is a large difference between the compression strength of cylindrical managerial test pieces of standard underwater curing and the strength of structure beam concrete. Thus, this study made concrete test pieces in an optimal mix ratio for each strength level, and also created adiabatic curing tank and managerial test pieces. Then it carried out comparative analysis in relation to core strength and suggested equipment and a technique that can control the strength of high strength concrete mass more conveniently and accurately.
조규현,김제섭,전판근,김우재,정상진 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1
The purpose of this study is to improve the productivity and constructability of permanent forms. The permanent forms will cut down the cost of production and make easier to install in the field; hence increase the use of forms in the today's market. The permanent form is produced in the factory and built in field. So this study is in two parts. The one is the productivity in factory, the other is constructability in the field. This study is the designing a new mold system as a solution to existing mold system's problems.
고속전철 추진 시스템의 미끄럼 방지 제어기법에 관한 연구
황돈하,김동희,노채균,심광열,조규판,정원영 영남대학교 공업기술연구소 1999 工業技術硏究所論文集 Vol.27 No.2
Induction motor drive with PWM inverter control has been developed for Korean High Speed Railways. To improve traction performance, the anti-slip control(ASC) to recover adhesion must be considered. This paper describes a novel hybrid anti-slip control method for the induction motor drive. By introducing the vector control for drive system, quick response of the motor torque can be achieved when wheels are going to slip. A hybrid control scheme by mixing two conventional control methods (slip velocity feedback control and slip detection pattern control) for wheel slip and re-adhesion is proposed. This control method is simulated by motor drive, train load, and friction-creep models. The train running simulation results based on induction motor vector control with PWM inverter show that good re-adhesion characteristics are obtained.
Kim, Pan Soo,Shin, Ji Hyun,Jo, Doo Sin,Shin, Dong Woon,Choi, Dong-Hwa,Kim, Woo Jung,Park, Kyuhee,Kim, Jin Kyu,Joo, Chul Gue,Lee, Jong Suk,Choi, Yongmun,Shin, Yong Won,Shin, Joong Jin,Jeon, Hong Bae,Se Elsevier 2018 Biochemical and biophysical research communication Vol.503 No.1
<P><B>Abstract</B></P> <P>Skin pigmentation involves multiple processes, including melanin synthesis, transport, and melanosome release. Melanin content determines skin color and protects against UV radiation-induced damage. Autophagy is a cooperative process between autophagosomes and lysosomes that degrades cellular components and organelles. In the present study, B16F1 cells were treated with <I>Rhizoma Arisaematis</I> extract (RA) and assessed for pigmentation and autophagy regulation. RA treatment suppressed the α-MSH-stimulated increase of melanogenesis and down-regulated the expression of tyrosinase and TRP1 proteins in B16F1 cells. In addition, autophagy was activated in RA-treated cells. Inhibition of autophagy reduced the anti-melanogenic activity of RA in α-MSH-treated B16F1 cells. We identified schaftoside as an effector molecule by LC-MS analysis of RA. Consistently, treatment of schaftoside showed anti-melanogenic effect and induced autophagy activation in B16F1 cells. Inhibition of autophagy by 3 MA treatment reduced the anti-melanogenic effect of the schaftoside and recovered expression level of melanogenesis regulators in α-MSH-treated B16F1 cells. Taken together, our results suggest that schaftoside from RA inhibits skin pigmentation through modulation of autophagy.</P> <P><B>Highlights</B></P> <P> <UL> <LI> <I>Rhizoma Arisaematis</I> extract (RA) suppressed the melanogenesis. </LI> <LI> Inhibition of autophagy reduced the anti-melanogenic activity of RA. </LI> <LI> Schaftoside was identified as an effector molecule of RA. </LI> <LI> Schaftoside has anti-melanogenic effect and induced autophagy activation. </LI> </UL> </P>
김판영(Pan-Young Kim),김현기(Hyun-Gi Kim),박진수(Jinsoo Park),황재봉(Jae-Bong Hwang),송규삼(Kyu-Sam Song) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5
The main functions of excavator are mainly carried out by excavator attachments such as arm and boom. These components should be designed to be light as well as durable enough because their effects on the whole structure are significant. In this paper, an optimization procedure for lightweight design considering fatigue strength for excavator attachments is presented. The weight of attachments and allowable fatigue stresses at critical areas are used as objective function and constraints, respectively, in which design variables are the thickness of the plates of attachments. The simulated annealing search method is adopted for a global optimization solution. Besides, the response surface method using the artificial neural network is used to simulate constraint function for the sake of practical fast calculation. Some example case of optimization is presented here for a sample excavator. This weight optimization is expected to contribute to a considerable improvement of fuel efficiency of excavator.