OVERSHOOT를 제거한 개선된 큐빅 스플라인 보간법에 관한 연구

김성현,김진만,조상현,주동현,김두영 東亞大學校附設情報技術硏究所 2005 情報技術硏究所論文誌 Vol.12 No.2

This study presents the improvement of cubic spline interpolation without overshoot. The o-riginal cubic spline interpolation has overshoots between two data. They are noises in still image zoom because of getting out of the pixel value. But the improvement of cubic spline in-terpolation removes them and proffers better quality still image than other interpolations.

생체 인식 정보 검출을 위한 Watershed 기반 Texture 병합에 관한 연구

김진만,김성현,조상현,김태형,김두영 東亞大學校附設情報技術硏究所 2005 情報技術硏究所論文誌 Vol.12 No.2

this paper presents the method that extracts by using watershed algorithm the area which is available for the feature factor in the iris. The inputted image is preprocessed and transferred to the texture block pattern by Polar Coordinate System Transformation. In this paper, the iris feature area is extracted from the image of Texture Block Pattern using Watershed Algorithm. The extracted area is indexed by average value and size of the feature area. After the position information of the feature area is rearranged by Polar Coordinate System Inverse-Transformation. In result, the proposed method showed that is possible to extract the definite iris feature.

HPLC-ICP/MS 와 ICP/MS를 이용한 FAPAS 07187 쌀의 총비소, 무기비소, 카드뮴 측정

노현명 ( Hyun Myung Noh ),김지영 ( Ji Young Kim ),김원일 ( Won Il Kim ),( Anitha Kunhikrishnan ),김민지 ( Min Ji Kim12 ),김경진 ( Gyeong Jin Kim ),박기문 ( Ki Moon Park ),류지혁 ( Ji Hyock Yoo ),김두호 ( Doo Ho Kim ),이영자 ( Y 한국환경농학회 2013 한국환경농학회 학술대회집 Vol.2013 No.-

Metal (loid)s such as environmental contaminants affect food safety. Metal (loid)s exist trace extremely in agriculture products. Therefore it is important to analyze accurately about trace these metals. High resolution techniques and quality controls are needed to analyze these materials. In order to achieve quality results, standardized methods and techniques are required. So ISO(International Organization for Standardization) of laboratory proficiency testing is determination of laboratory testing performance by means of inter-laboratory comparison. The values have been derived as a consensus of a number of laboratories using a variety of methods. Proficiency tests were applied to analyze the metal(loid)s [inorganic arsenic (As), total As and cadmium (Cd)] in powdered rice FAPAS 07187 (Food Analysis Performance Assessment Scheme; February-April 2013). The rice powder sample was extracted with 1% HNO3 for inorganic As for microwave-assisted extraction using water at 95℃ for 90 min and their analysis by HPLC/ICPMS. Also, HNO3 for total As and Cd using microwave-assisted extraction using at 200℃ for 50 mins and analysis by ICP/MS. Validation check was performed for accuracy using CRM (NMIJ CRM 7503-a) for inorganic As, and CRM (IRMM-Rice CRM) for total arsenic and cadmium. The result were satisfactory. FAPAS 07187 the z-scores of inorganic As, total As and Cd in powdered rice were-1.8,-0.9 and 0.2(lzl<2, respectively).

SPHIT 알고리즘의 개선을 통한 JPEG2000 정지영상 부호화에서의 압축효율 개선

조상현,김성현,김진만,주동현,김두영 東亞大學校附設 情報技術硏究所 2004 情報技術硏究所論文誌 Vol.12 No.1

With the increasing use of multimedia technologies, image compression requires higher performance as well as new functionality. Specially, in the specific area of still image encoding, a new standard, JPEG2000 was developed. This paper proposed SPHIT Algorithm that uses a method to optimized selection of threshold from feature of wavelet transform coefficients and to removes sign bit in LL area on JPEG2000. Experimental results show the proposed algorithm achieves more improved bit rate.

침수된 전기설비의 누전으로 인한 수중에서의 감전특성에 관한 연구

김두현,강동규 한국산업안전학회 2002 한국안전학회지 Vol.17 No.3

A study on the characteristics of electric shock in fresh water due to the leakage of submerged electric facility is conducted by using a reduced scale model at a scale of 1:10 in laboratory. Electric potential as a function of distance from leakage source, type of the leakage source, magnitude of the source voltage, submerged depth and diameter of a copper rod electrode is measured. On the basis of safety standard, separation for guarantee of safety is determined by the measured potential. Also supposing that body resistance is 500[Ω], the human reaction was estimated by calculation body current for some shock duration. Thus, in this paper the hazard of the electric shock is assessed by introducing representative safety factors, body voltage and body current due to leakage source.

警護學의 發達과 公警護의 專門化方案에 관한 考察

김두현 한국체육대학교 1998 敎養敎育硏究所 論文集 Vol.- No.3

I study on the Improvement of The Presidential Security Service and the development process of the politics of protection. The paper, purporting to analyze security and science, comprised for chapters. Chapter I which sets out purpose, scope and method, is followed by chapter Ⅱ, dealing largely with the development and coming into existence of The Politics of Protection. Chapter Ⅲ concerns the improvement of The Presidential Security Service and the important problems by which the security study. It is followed by concluding observation made in chapter Ⅳ.

정상인과 뇌졸중환자에서 운동유발전위의 평가

김동현,박종현,권오상,김두응 중앙대학교 의과대학 의과학연구소 1997 中央醫大誌 Vol.22 No.2

Since the development of magnetic stimulation as a way of assessing the function of central motor pathways, various neurologic diseases have been investigated by motor evoked potentials(MEP). This study was carried out to evaluate the usefulness of clinical application of MEP to the stroke patients. MEP were elicited with transcranial cortical stimulation using a magnetic coil in 21 healthy subjects and 18 stroke patients. Average of age was 37.5±18.0 and 63.7±7.7 years in normal and patient groups respectively. All stroke patients had a mild to severe clinical unilateral motor weakness, and also were proven to have unilateral infarction or hemorrhage at various regions of brain radiologically. During MEP studies, neither significant side effects nor pin were encountered. MEP latency of abductor pollicis brevis(APB) and extensor digitorum brevis(EDB) in controls measured 22.4±2.0 msec and 41.8±2.9 msec respectively. Normal central motor conduction time(CMCT) was 9.7±1.6 msec and 19.3±2.3 msec respectively. The amplitudes of MEP were not reliable due to great variability. Abnormal responses were noted in 5 patients on the APB and in 12 patients on the EDB motor evoked potentieal studies. Mean latency and CMCT were significantly prolonged in involved sites of the other 16 patients, comparing with control data. Prolonged latency and CMCT, increased inter-side difference of CMCT. Any potential was not a useful indicator in determining abnormality of MEP study. More paralyzed patients were apt to show abnormal responses in MEP studies. There were also more abnormal results during acute stage compared with chronic stage More abnormal results were observed in the patients with cerebral cortex or corona radiata involvements. It is suggested that MEP study is a useful and sensitive method in the evaluation of stroke patients and be a effective method for further understanding of central motor system.

Linux 시스템에서의 ELF 파일 변형 바이러스의 분석 및 대처방안 연구

김두현,김판구 조선대학교 전자정보통신연구소 2001 電子情報通信硏究所論文誌 Vol.4 No.1

As network and Internet is spreading nowadays, Linux has become the most popular operating system in the world. Linux has been launched on the Desktop PC, Server and PDA. More Linux is popular and popular. threat from virus writers is increasing day by day. That is, it becomes a new battle field to virus writer, and they are testing malicious program, for example virus, trojan horse, worm etc. So we needs of new warriors in Linux battle field. In this paper, we propose a synthesized methods for protecting ELF viruses and repair virus infected file. This system diagnose all executable files and a daemon monitor suspicious execution. Our proposed system consists of two parts. One is diagnosis module and another is protection module. Diagnosis module finds viruses using pattern matching and protection module are monitoring in two ways, network daemon and integrity checker.

지상과 수중에서 전격에 의한 위험성 평가

김두현,강동규,이종호 한국안전학회 2004 한국안전학회지 Vol.19 No.2

This study presents a hazard assessment of the human body exposed to electric shock considering various parameters which affect severity of the electric shock. The present study has two research objectives; one is to analyze hazards of the human body by the electric shock both on the ground and m the water. The other is to understand the mechanism of the electric shock. In order to achieve these objectives the hazard of shock is estimated by comparing with physiological effects of electric current through the human body according to variation of shock parameters of shock circuits. The shock parameters adopted in this paper consist of body resistance, resistance of protective equipment, ground resistance, shock duration, depth of ground surface layer, reflection factor, permissible touch voltage, body current and body voltage. Besides, safety standard determining hazard degree of the human body is introduced. And hazard of the human body due to the electric shock is quantitatively assessed in consideration of data obtained by the method suggested herein, and final results are presented and discussed.

북한 체육교육의 체제 및 남북한 교류협력 방안

김두현 한국체육대학교 2001 韓國體育大學校 敎養敎育論文集 Vol.- No.6

This world has been made on the basis of the physical education system and it regulation as well as cooperation in sports exchange between the North and the South.It has been known that the program would be one of the most possible ways of stopping the political and ideological tensions, leading the North to open world.Also, it would be an opportunity to give her the human right endowed equally for better life.Furthmore, it would contribute to ease military tension or to promote mutual understanding between two hostile contrries.The theoretical approaches to this research have been conducted by sports policies, principles, facilites and administrative systems to realize these constructive objects. In pursuit of the Program, some suggestions have been made : they are 1) sports terms have to be clarified: 2) joint training should be conducted to enhencing competitions in the favorable sporting event ; and associations concerned, educational institutions, broadcasting medias, etc will play an important role to maximize the effect of cooperation in exchanging sports between two sides.