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.

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.

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).

파라핀에 포매한 형질세포종양 조직에서의 CD56의 발현 증가와 진단적 유용성

김석형,박찬식,최은영,강현욱,박성희,정두현 대한병리학회 2001 Journal of Pathology and Translational Medicine Vol.35 No.3

웨이블릿 변환과 확산코드를 이용한 워터마킹에 관한 연구

김현환,김두영 동아대학교 정보기술연구소 2001 情報通信硏究所論文誌 Vol.8 No.2

In this paper we presented a technique for embedding the secrete information of creator into the video to protect the copyright of digital contents. The embedding algorithms transform the image to be made watermarking to 3-level wavelet transform and decide the embedding position of watermarking by extracting code and then embed the watermark to the position through combine prepared watermark with watermark weights. The extracting algorithms transform original image and watermarked image t 3-level wavelet conversation and calculate differential value with each frequency band and then extract embedding watermark through the spread codes that have same value when it embed. The experimental results showed that the proposed watermarking algorithm was superior in quality to other similar watermarking algorithm and was robust to various attacks such as the JPEG lossy compression, the LSB masking, the brightness, the filtering etc.

Ku대역용 편파변환 편파기 설계

김동현,서수덕,양두영 濟州大學校 工科大學 産業技術硏究所 1997 尖端技術硏究所論文集 Vol.8 No.2

In this paper, we present a polarizer that consists of three step rotary detents which can selectively convert linear polarization into circular polarization and vice versa. For the design of the polarizer, the transmission line theory is applied to design the waveguide mode transducer for the modes to be smoothly converted between rectangular and circular waveguide. A dielectric plate is inserted in circular waveguide for the conversion of a polarized wave with the angle of an inserted dielectric plate. Also, we simulated to obtain the optimum values of the transmission and the reflection coefficient characteristics at input and output port.

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.

북한의 생물무기 테러위협에 대한 경호경비 대책

金杜炫 韓國體育大學校 1999 論文集 Vol.22 No.-

I study on the security measures against of bioterrorism in North Korea. Biological Weapons have recently attracted the attention and the resoures of the nation. The paper, purporting to concider security counterplans, comprise six chapters. Chapter Ⅰ which sets out purpose, scope and method is followed by chapter Ⅱ, dealing with the concept of the biological weapons. Chapter Ⅲ concerns the productive capacity and provision against of bioterrorism in the main nations. Chapter Ⅳ consider the productive capacity and threat for South Korea. Chapter Ⅴ adopt to a proper measures against terrorism of biological weapons in North Korea. It is followd by concluding observation made in Chapter Ⅵ. I suggested to The Presidential Security Service in South Korea must prepare detection equipment, inoculate presidential guards with protective inoculation, constitute a data-bases of materials for terror and study against biological weapons, the others.

드라이 용제(dry solvent)를 취급하는 근로자들의 자각증상

김수근,임현술,김두희 東國大學校醫學硏究所 1997 東國醫學 Vol.4 No.-

드라이 용제를 취급하는 근로자들의 건강장애를 알아보기 위하여 드라이 용제 폭로 근로자 51명과 동일 사업장의 사무직 근로자 97명을 대상으로 자각증상 호소율을 조사하고, 건강진단을 통해 간기능검사(혈청 GOT, 혈청 GPT)와 혈액검사(혈색소량, 혈구용적치, 백혈구수)를 실시하여 다음과 같은 결과를 얻었다. 1. 중추신경계 관련증상과 일부 자극증상이 폭로군에서 비교군보다 통계적으로 유의하게 높았다. 최근 1주일간 작업 중에는 '머리가 무겁게 느껴진다', '눈이 침침하다', '두통이 있다', '어지럽다' 순이었고, 지난 6개월 동안에 경험한 증상은 '몸이 나른하다', '눈이 쉽게 피로해진다', '머리가 무겁게 느껴진다', '현기증이 난 적이 있다(어지럽다)', '눈이 침침하다', '머리가 띵하다' 순이었다. 2. 혈액검사 결과는 1명의 철결핍성 빈혈 외에는 모두 정상이었다. 간기능 검사상 이상소견율은 폭로군에서 높앗으나 통계적으로 유의하지 않았고, 연령, 근속기간, 비만도, 흡연 유무, 음주습관 등을 고려한 로지스틱회귀분석에서도 폭로군의 교차비(odds ratio)가 유의하게 높지 않았다. 이상의 결과에서 드라이 용제에 폭로된 근로자들에서 만성 중추신경계장애로서 기질적 정서증후군에 해당하는 자가증상의 호소율은 증가하나, 혈액학적 소견의 변화와 간기능장애는 관찰되지 않았다. 앞으로 드라이용제에 폭로되는 근로자들의 건강장애를 파악하기 위해서는 자각증상의 조사가 중요하며, 개인별 폭로량을 계량화하여 건강장애를 심층분석하는 것이 필요하다. This study have following results by means of complaint rate of subjective symptoms, liver function test(SGOT, SGPT) and hematological test(Hb, Hct, WBC) in order to investigate the impact of exposure to dry solvent on the health, the subject of study is 51 dry solvent exposed worker and 97 office worker in the same plant. 1. In the complaint rate of subjective symptom, exposed workers are higherthan office workers on the CNS depression and irritation. During working time, they had following symtom in order ① heavy feeling in the head ② dimmed vision ③ headache ④ dizziness. During ordinary time, they had following symtom in order ① general weakness ② strained eye ③ heavy feeling in the head ④ dizziness ⑤ dimmed vision ⑥ light headedness 2. In hematological findings, they had almost within normal limit except one case of iron deficiency anemia. In abnormal rate of liver dysfunction, exposed workers are higher than office workers. But it is'nt significant staistically. Also, in logistic regression analysis which is controlled about age, working career, BMI, smoking habit and weekly alcohol intake, odds ratio of exposed workers aren't higher significant staistically than office workers. As these result, it is recognized that organic affective sydrome in solvent induced-CNS disorders result in when workers exposed dry solvent. But there is no evidence of abnormal hematologic findings and liver dysfunction due to dry solvent exposure. Therefore, the survey onsubjective symptom questionnaire is necessary to recognize health impact of dry solvent, and it is necessary to investigate on health impact according to exposure level of dry solvent.