海軍將校 勤務評定 制度 改善에 關한 硏究

김성중 해군대학 1984 海洋戰略 Vol.- No.29

競爭心理가 筋持久力 發現能力에 미치는 影響

金聖中 仁川敎育大學校 1988 論文集 Vol.22 No.2

The purpose of this study was evaluate of Muscular Endurance on the effect of compitition. The subject was 20 male Students in physical Education of I. College. For this analysis was comparison with Dynamic Muscular Endurance (sit-up) and Static Mascalar Endurance (hang on long time). The results of this experiment study are as follow; 1. Dynamic Muscular endurance was effect on compitition. 2. Static Muscular Endurance was effect on compitition. 3. Dynamic Muscular endurance on Non compitition and Dynamic Muscular Enduram on Compitition was valuable correlation (r=0.900 51). The regression equation was y=1.02058x+9.88582(α〈0.05) 4. Static Muscular Endurance on Non compitition and Static Muscular Endurance on Compitition was valuable correlation(r=0.52736). The regression equation was y=0.39674x+26.49855 (α〈0.05) 5. Increase of Dynamic Muscular Endurance and Static Muscular Endurance on compitition was not difference in 95% level.

베리오그램을 이용한 광체 평가 및 3차원 모델링 소프트웨어 개발

김성중,박형동 한국자원공학회 2009 한국자원공학회지 Vol.46 No.2

In this study, new software for mineral resource estimation and 3D modeling using geostatistics was developed. Thus it is possible to make 3D variogram maps using topography data and borehole data, and to estimate the strike and dip of ore reserve. 3D mineral resource estimation can be performed using 3D isotorpy․anisotropy variogram modeling and Kriging. By using the OpenGL (Open Graphics Library), it is possible to visualize various types of geo-information data such as topography, borehole, estimated 3D mineral resource. This paper describes main functions and details of the software development and implementation. 본 연구에서는 지구통계 기법을 활용한 광체 평가 및 3차원 모델링 소프트웨어를 개발하였다. 개발된 소프트웨어를 이용하여 지형정보, 시추정보를 활용하여 3차원 베리오그램 맵을 작성하여 광체의 연장 방향 및 경사를 예측할 수 있고, 3차원 베리오그램 모델링 및 크리깅을 이용한 3차원 광체 품위 예측이 가능하다. 또한 강력한 저수준 렌더링(Rendering) 기능을 제공하는 OpenGL을 이용하여 지형정보, 시추정보, 광체예측결과 등을 효과적으로 3차원 시각화 할 수 있다. 본 논문에서는 개발된 소프트웨어의 주요 기능과 금음광산에 적용결과를 제시하였다.

근전도와 관성센서가 내장된 암밴드를 이용한 실시간 수화 인식

김성중,이한수,김종만,안순재,김영호 한국재활복지공학회 2016 재활복지공학회논문지 Vol.10 No.4

Deaf people using sign language are experiencing social inequalities and financial losses due to communication restrictions. In this paper, real-time pattern recognition algorithm was applied to distinguish American Sign Language using an armband sensor(8-channel EMG sensors and one IMU) to enable communication between the deaf and the hearing people. The validation test was carried out with 11 people. Learning pattern classifier was established by gradually increasing the number of training database. Results showed that the recognition accuracy was over 97% with 20 training samples and over 99% with 30 training samples. The present study shows that sign language recognition using armband sensor is more convenient and well-performed. 수화를 사용하는 농아인은 의사소통의 제약에 의해 사회적인 불평등과 금전적 손실을 겪고 있다. 이러한 이유로 본 연구에서는 농아인의 원활한 의사소통을 위해 8개의 근전도와 1개의 관성센서로 구성된 암밴드 센서를 이용하여 실시간으로 미국 수화를 인식하는 알고리즘을 개발하였다. 개발된 알고리즘의 성능 검증은 11명의 피험자를 통해 진행하였으며, 패턴 분류기 학습은 훈련 데이터베이스 크기를 증가시키면서 진행하였다. 실험 결과, 개발된 패턴 인식 알고리즘은 동작 별 20개의 훈련 데이터베이스에서 97%이상의 정확도를 가졌으며, 30개의 훈련 데이터베이스에서 99%이상의 정확도를 보였다. 이를 통해 본 연구에서 제안하는 암밴드 센서를 이용한 수화 인식 알고리즘의 실용성과 우수성을 확인하였다.

남극 세종기지에서의 지표 플럭스 관측:II. 2002-2003년 남반구 여름기간의 열과 수증기의 난류교환

김성중,이방용,최태진,홍성민,이희춘 대한지구물리학회 2005 지구물리 Vol.8 No.3

마이크로-컴퓨터를 利用한 Programmable 制御器 開發에 對한 硏究

김성중,황형수,이창구 全北大學校 1984 論文集 Vol.26 No.-

In this paper, we present the new designing method of programmable controller that concentrated on analong signal processing in hardware implementation. Software programmings are partioned into monitor program and control program. Monitor program is composed of systeminitialization, I/O control and key service routine. Control program procedure is concentrated on obtaining the tuning coefficient associated with PI algorithm and ON-OFF algorithm.

Digital R-C Meter에 關한 硏究(設計)

金聖中 전북대학교 공업기술연구소 1980 工學硏究 Vol.10 No.-

Resistors and Capacitors are the most common components used in electrical systems. Yet, while most of us have ohmmeters we can use to check resistor values readily, very few have instruments that check capacitor values. Capacitors are also among the most difficult parts to measure inexpensively with accuracy. Good capacitance measuring equipment is quite costly. Traditionally, capacitance has been measured on an AC bridge by balancing known components against the reactance of an unknown capacitance at a given, fixed frequency. However, instruments are now appearing which employ a different method to determine capacitance. Most of them employ the DISCHARGING TIME of a capacitance through a resistor. Instead we employ its CHARGING TIME. The DIGITAL-READOUT resistance-capacitance meter studied in this paper is the much useful instrument which can check capactor values as well as resistor's. By just pressing a button it can accurately measure any unknown capacitors (including electrolytics) from 1 pF to 1000 uF, and any unknown resistors from 1KQ in 10MQ in three or two ranges. The project is easy on the budget, too, as low-cost 7400 series Logic IC s and 555 timer IC are used throughout.

마이크로-컴퓨터에 의한 實時間 處理에 關한 硏究

김성중,황형수,이창구 전북대학교 공업기술연구소 1984 工學硏究 Vol.15 No.-

On-line real time processing application system may be concatenated media composed of computer hardware, software, digital system, communication system, monitor, control system, etc. In real time processing system, high level languages for real time processing system such as real time OS and assembly language are used. In this paper, the characteristics of real time system using microcomputer is presented and we presented the construction of on-line control system. Finally, we show the example of water level control application using the high level language such as sensing technology, A/D, D/A converter, etc.

수정된 쟈코비안 행렬을 이용한 전압-무효전력 제어 앨고리즘 연구

金聖中,金世榮 전북대학교 공업기술연구소 1989 工學硏究 Vol.20 No.-

Over the past quarter century the complexity of electric power systems has increased very much and the better electricity has been requested by customers. Therefore the control of reactive electric power has been studied hard for improvements of voltage profiles and for power losses minimizations. A new method to find the optimal conditions of reactive electric power distribution is presented in this paper. Linear Programming is used to calcultate the voltage increments which minimize the transmission losses, and the adjustments of control variables are obtained by a modified Jacobian matrix, which does not need any matrix in version and saves computational time and memory space. This new algorithm is adopted to IEEE 6, 14-BUSES systems as illustrative examples and good results are obtained.

周波數 領域의 시스템 簡略法에 관한 硏究

金聖中,黃炯秀,梁海權 전북대학교 공업기술연구소 1985 工學硏究 Vol.16 No.-

A simple procedure is presented for obtaining reduced-order model for time-invariant systems. This method does not require the calculation of the alpha-beta expansion and alpha-beta table which should be calculated Routh approximation method, hence it is computationally very attractive better than Routh approximation method, furthemore the stability of the low-order is guaranted if the original system is stable. This method starts with the continued fraction expansion about the polynomial of the ratio of the even and odd part of the denominator of original system. Where the polynomial of the ratio of the even and odd part of the denominator of original system is called auxiliary-denominator polynomial. Truncation of this continued fraction expansion of auxiliary denominator polynomial give for the denominator polynomial of the low order model. The coefficient of the numerator polynomial are then obtained by equating time moment of the original and low-order model.