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카오스 암호화 기술을 이용한 보안 웹 메일 시스템의 개발
정성용 대구보건대학 2003 대구보건대학 論文集 Vol.23 No.-
This Study has developed a secure web mail system which uses the chaos technique. It turns out that excellent in safety and applicable, and periodicity with correlation was not shown. With the development of the system, encrypted mail can be transferred to internal mail users or external users from the mail server. Internal mail users can open the descrypted mails automatically through built-in descryption module, and external mail users can open the transferred mails by using attached mail viewer. The developed system has been highly evaluated to have outstanding functions by means of experiments.
정성용 대구보건전문대학 2007 대구보건대학 論文集 Vol.27 No.-
The fingerprint for a long time was identity of authentication it was used and it was come The fingerprint is identity of different type authentication it is and a means cross-beam and authentication the convenient and result intimate characteristic of reliability and use is evaluated height. Recently many the research and application are materialized, this research is development of the fingerprint recognition technique which uses an objection a new fingerprint recognition used chaos Theory method. This Study implemented the algorithm which extracts chaos characteristic it will be able to strange attractor composition use a fingerprint data
CSS 기반의 독립형 Anchor node를 이용한 실시간 위치 추적 시스템 개발 연구
정성용 대구보건대학교 2012 대구보건대학 論文集 Vol.32 No.-
RTLS(Real Time Location System) is used usually indoors or in limited areas, such as is used in close proximity to the location estimation, the most common method used to track the lacation by triangulation. However, current research in the RTLS Access Point that is the reference point of the location tracking of mobile unit is fixed, the AP has not been installed as the scene of the fire and an unspecified space, the roblem has not be able to track the location of the mobile unit. In this study, the development of RTLS Access Point as a stand-alone development track of the location of the mobile unit, which is the reference point so that you can track the location of the Mobile Tag Using CSS-based, stand-alone Anchor node. In this study, Anchor node and the distance between Anchor node and Mobile Tag Location Tracking 100m x 100m in the outdoor environment, and measure the results in this study were compared with those measured using a laser ragefinder distance. Result, Anchor nodo to Anchor node distance between the measurement results of approximately 272cm. Mobile Tag to Anchor node distance between the measurement results of approximately 272cm error occurred. Location Tracking for Mobile Tag can effectively achieved.
정성용,김경희,고명연,안용우,박준상,Jung, Sung-Yong,Kim, Kyoung-Hee,Ko, Myong-Yun,Ahn, Yong-Woo,Park, Jun-Sang 대한안면통증구강내과학회 2005 Journal of Oral Medicine and Pain Vol.30 No.4
The purpose of this study was to evaluate the desensitizing effects of a Nd:YAG laser (Sunlase, SUNRISE Technologies, Inc., USA) irradiation on cervically exposed hypersensitive dentine. 45 patients was irradiated with pulsed Nd:YAG laser (1.5 W, 20 Hz, 75 mJ/pulse, 4 minutes) as the experimental group, 27 patients was mock irradiated as the control group. The degree of sensitivity to the thermal and tactile stimuli were determined qualitatively with an evaporative stimulus defined as two times air blast at a distance of 3 mm from each site to be tested and with a mechanical stimulus as a slightly scratching the cervical site with a dental explorer. A qualitative registration of the degree of discomfort was determined according to a numerical pain scale(NPS) in an 11-point scale in which 0= "no pain" and 10="most excruciating pain imaginable". Recordings were assessed before treatment, immediately after, 1 and 2 weeks after treatment. Pain tolerance threshold and pulp vitality were evaluated with electric pulp tester before and immediately after treatment. 1. Desensitizing of hypersensitive dentine with Nd:YAG laser irradiation was more effective than that with mock irradiation. 2. The placebo effect of mock irradiation was recognized for severe sensitive teeth($NPS\;{\geqq}\;6$), but not for moderate sensitive teeth(NPS < 6). 3. Laser irradiation did not affect the pain tolerance threshold and pulp vitality of the hypersensitive teeth. 4. Desensitizing effect of laser irradiation for the hypersensitive teeth had been continuing at least 2 weeks. It was concluded that desensitizing of hypersensitive dentine with a Nd:YAG laser is effective and the maintenance of the positive result was more prolonged than the placebo effect.
정성용 大邱大學校 社會科學硏究所 1998 社會科學硏究 Vol.5 No.5
도시화의 확산 및 교통과 통신수단의 발달로 인한 대도시 생활권은 하나의 중심도시를 둘러싸고 있는 주변도시와 사회, 문화, 경제적으로 동질성을 지니는 광역도시권을 형성하고 있다. 이는 도시의 행정구역의 범위를 초월하는 광역도시시설에 대한 수요를 증가시키고 있다. 광역도시시설은 중심도시와 주변도시의 제반수요를 보다 광역적 차원에서 대처하여야 효율적인 시설공급이 가능하다. 교통시설은 그 시설자체가 물리적으로 지역간의 연계성이 필수적으로 요구되는 대표적인 광역도시시설에 해당된다. 그러나, 대구광역시 및 경상북도에서 발표한 광역교통계획은 행정구역의 범위를 초월하지 못하였기 때문에 광역적 차원의 교통계획이라 할 수 없다. 대구광역권 도시외곽순환고속도로는 도시권의 공간구조의 골격을 형성하는데 결정적인 역할을 하는 동시에 대구광역시 주변도시의 접근성을 개선시켜 줌으로서 주변도시의 개발 잠재력을 향상시키는 역할을 한다. 따라서, 본 연구에서는 도시외곽순환고속도건설을 단순히 광역교통계획의 차원을 벗어나 광역도시권의 공간구조를 개편하는 차원에서, 대구광역권의 외곽순환고속도로 건설방안을 검토하여 보았다. 본 연구에서는 분산집중형 대도시권 공간구조의 틀하에서 대도시권 중심도시, 지역중심도시 및 하위중심도시 등 3단계의 계층적 도시구조를 확립하였으며, 이러한 도시구조하에서 외곽순환고속도로의 구축방안을 제시하여 보았다.