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.

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.

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.

다양한 기준응답 데이터를 이용한 디지탈 PID 제어기의 파라미터 결정 방법

김윤상,오현철,안비오,안두수 成均館大學校 科學技術硏究所 1998 論文集 Vol.49 No.2

This paper presents an efficient algorithm which determines the parameters of digital PID controller. The proposed algorithm is an algebraic method to obtain controller parameters using various reference responses data, which makes design procedure general as well as straightfoward. Simple examples are given to demonstrate the effectiveness of our method with respect to various reference responses data.

정보보호경영시스템 규격분석에 관한 연구

황희두,추현민,김종훈 동아대학교 정보기술연구소 2006 情報技術硏究所論文誌 Vol.14 No.1

In the information society, security policy must be prepared in order to manage organization's information safely and by the security policy, security system must be developed and security management must be done. In order to do that, Understanding is required about International Organization for Standardization's Information Security Management System(ISO/BS17799:2002) and the organization that wants to certificate by using that understanding or the cooperation's security environment must magnify Security System's Correctness and Effectiveness. In this paper, We will analysis Information Security Management System's concept and then show you analysis about standard item of the cooperation that wants to certificate or the organization certification.

한국형 공개SW 표준 플랫폼 BOOYO 기반의 WAS구축 및 SPECjAppServer2004 벤치마킹 연구

김두현,김리라,정성인 건국대학교 산업기술연구원 2005 건국기술연구논문지 Vol.30 No.-

We efficiently loaded Tomcat, JBoss, PostreSQL and Apache which are the core of publicly published open Source based WAS middleware on Booyo in Korea Open Source Standard Platform. This paper compare performance of Booyo with performance of foreign products using SPECjAppsserver2004 banchmark. In benchmark if Booyo increases a load, JOPS for a performance measurement unit falls a small number. Therefore. this paper describes a result and building a research WAS.

우편물을 이용한 생물학 및 화학무기 테러의 대비방안

김두현 한국체육대학교 교양교육연구소 2002 韓國體育大學校 敎養敎育論文集 Vol.- No.7

This work analyze the security measures against terrorism of biological weapons by mail delivery. Apparently they are largely dependent on the biochemicals, eletronics, laser, and cybernetics. Also they draw an attention to us of a probability of various threats from the North, or ill illtending regimes to deter the 2002's World Cup, under the heading of "w Centennial, Meeting, and Start Movement˝ What follows is that this research strongly proposes that we should take prior safety actions for hosting the successful World Cup Match in Korea-Japan as well as maintain the national security for peace. Security measures for the terrorism of 5iological weapons by Mail Delivery are presented as follow. 1) The collaboration with other nations in dealing with recent international terrorisms totally different from previous ones is needed. 2) A determined attitude to refuse any negotiations or dealing with the terrorists and to degrade them into a mere criminal syndicate is required 3) The most effective and high-tech security system is to be developed to promote efficiency in Fire Prevent of Structural Safety and Explosive Detecting, and to be operated by experts in the system.

경호경비산업의 문제점과 발전방안

김두현 韓國體育大學校 2002 論文集 Vol.25 No.-

This paper is to study on the problem and the development plan of security industries in South Korea. At first, this paper is to investigate the present condition and the problem of security industries such as security guarding, specially detailed policemen, call centers, correctional institutions and industrial security guarding. And also, this paper is to examine the development plan in the security guarding, specially detailed policemen, private military corporations, the qualified private investigator system, civil prison running, and industrial security guarding. Finally, this paper is to suggest a political consideration for the specialization of the guard, the improvement of the mechanical security system, advanced countermeasures against the industrial spy or hacker, destitute private security contractors and a devise to guarantee minimum wages of the security guard.

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.