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이동객체의 궤적 데이터에 대한 온라인 도로 네트워크 매칭 방법
정성모,송석일 한국정보기술학회 2023 한국정보기술학회논문지 Vol.21 No.1
최근 궤적 데이터가 가진 공간적 특징을 이용하여 도로 속도 예측, 교통 혼잡 예측 등 다양한 위치 기반 응용들이 연구되고 있다. 본 논문에서는 상태 천이 모델과 그리드 색인 방법을 이용하는 궤적 데이터에 대한 도로 네트워크 매칭 방법을 제안한다. 제안하는 매칭 방법은 궤적 데이터의 연속적인 위치 데이터에 대해 도로 네트워크에 대한 링크매칭, 매칭유지, 매칭변경, 매칭오류 상태를 판단하는 상태 천이 모델을 통해 매칭 정확도를 향상 시킨다. 또한, 제안하는 매칭 방법은 궤적의 위치 데이터와 도로 네트워크 간의 비교 연산을 줄이기 위해 그리드 색인(Grid Index)을 이용한다. 이 논문에서는 제안하는 방법을 구현하고 기존의 매칭 방법과 비교실험을 수행하여 기존 방법보다 높은 정확도와 빠른 동작시간을 증명하여 제안 방법의 우수성을 입증했다. 제안하는 방법을 통해 실시간 도로 속도 예측, 교통 혼잡 예측 등 다양한 연구에 도움이 될 것이다.
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Design of Web-Based Module and Process for Metal Resource Management
정성모,김석수 한국콘텐츠학회 2008 International Journal of Contents Vol.4 No.1
Existing improvement measures for resource management are merely concentrating on the document automation only. In addition, such improvements rarely benefit metal millwork management. Following the trend of constructing high rise and multi-complex buildings, the importance of resource management from the aspect of construction project management is being emphasized. Metal work resources are critical most of construction projects, it became a target for special management. Therefore, the study has determined work process of metal work resource management, for the metal millwork is one of the most important construction materials most of construction projects, and proposed a web based module for improving the management task.
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사물인터넷의 계층적 보안 기술을 적용한 연마기 원격 모니터링 시스템
정성모,김동현,김석수 보안공학연구지원센터 2017 보안공학연구논문지 Vol.14 No.3
Automatic specimen polishing systems using IoT sensor technology are being developed to improve the efficiency of the passive metal polishing process. In the case of automatic specimen polishing systems using IoT technology, a technique of analyzing and processing the data collected by sensors using a bitmap index is used to process data at high speed. However, in order to perform remote control of IoT-based grinder, it is necessary to control access to shared resources, but existing systems are applying data processing technology that does not apply a method to cope with the security threat. Therefore, in this paper, we propose a monitoring system that computes information collected from automatic specimen grinder by using bitmap index by applying IoT layer security technology. 수동 금속 연마과정의 효율성을 향상시키기 위한 IoT 센서 기술을 이용한 자동 시편 연마 시스템들이 개발되고 있다. IoT 기술을 이용한 자동 시편 연마 시스템들의 경우 고속으로 데이터를 처리하기 위하여 비-트리 인덱스를 이용하여 센서에서 수집된 데이터를 분석하여 처리하는 기술을 사용하고 있다. 그러나 IoT 기반의 연마기의 원격 제어를 수행하기 위해서는 공유 리소스에 대한 액세스를 제어해야하나 기존 시스템들은 이에 대한 보안 위협을 대처하기 위한 방법이 적용되지 않은 데이터 처리 기술을 적용하고 있다. 따라서 본 논문에서는 IoT 계층 보안 기술을 적용하여 자동 시편 연마기에서 수집된 정보를 비트맵 인덱스로 연산 처리하는 모니터링 시스템을 제안한다.
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정성모,김석수,최이정 보안공학연구지원센터 2011 보안공학연구논문지 Vol.8 No.3
There are over 20 different techniques on edge histogram analysis exists today for comparing video content similarities. As the study allows far more complex structural analysis to be conducted than generally known techniques, it is possible to extract diversified features by comparing video content similarities. This technique is applicable to unmanned security system running on Time Interval and the implemented system can perform its duties with reduced number of tasks, resulting lesser load on H/W while increasing processing speed.
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정성모,배충상,이내호,양경무,Chung, Sung-Mo,Bae, Chung-Sang,Lee, Nae-Ho,Yang, Kyung-Moo 대한미세수술학회 2005 Archives of reconstructive microsurgery Vol.14 No.2
The auricle is easy to be amputated in the face due to its protruding position. When facial parts are amputated, the mechanism of injury usually involves some form of avulsion, which damages these fragile vessels over a distance and renders them unsuitable for anastomosis. Replantation of the ear remains a challenging problem because of the tiny vessels and the paucity of adequate veins for anastomosis. Reattachment as a composite graft of the total or subtotal amputated ear is unreliable. Microsurgical replantation can be performed in a minority of cases because of technical difficulties and long operation time. In this article, the authors report two case of a successful ear replantation of completely amputated auricle. Only one artery and one vein were anastomosed in first case. In the other case one artery was anastomosed without vein. Instead of venous repair, multiple incision was done with leech application therapy. and the outcome was successful. In spite of the technical difficulties and long operation time, microsurgical replantation of amputated ear is better than other reconstructive method or reattachment without microsurgery.
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鄭星謨 釜山外國語大學校 比較法硏究所 1992 比較法學 Vol.4 No.-
This thesis deals with the trend, the environmental factors and the preventive measure to student crime that has encouraged social issues to rise recently. Recent crime survey which was conducted in Korea for 5 years, from 1984 to 1988, reveals that the rate of student crime is on the increase at its highest point compared with that of general criminal acts juvenile delinquency. Nowadays we must not rely on the momentary argument, but take effect many-sided aspects positively and fundamentally. Therefore this study considers the importance of students crime and analyzed the true state of affairs which are classfied according to a primary factor of students crime in family circumstances and community circumstances and this study sets up a purpose of adopting the protection and preventive measure of Student's crime. This tretatise is made up the following list. The lst chapter is dealing with the method of study and the range in the introductory remarks. The 2nd chapter is understanding the psychological perculiarity of being like a student and the structure and conception of consciousness. The 3rd chapter is understanding the theory of student's crime. The 4rd chapter is understanding face true state's crime. The 5th chapter analyzes the relevancy to the primary factor of student's crime in family, school and community. The 6th chapter suggests the protection and the preventive measure of student's crime. The 7th chapter asserts that a powerful national policy must be set up for solving the fundamental problem in the conclusion, must be erected the co-worker association of family, school community society.
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타워크레인의 용접부 비파괴검사 데이터 기반 취약부위 분석
정성모,임재용,Jeong, SeongMo,Lim, Jae-Yong 한국자동차안전학회 2021 자동차안전학회지 Vol.13 No.2
The purpose of this study is to investigate vulnerable parts of tower crane structures by analyzing extensive non-destructive test data. Approximately ten percent of domestically registered tower cranes were inspected by using magnetic particle inspection. The testing was carried out as advised in KS B 0213. The non-destructive results was analyzed with respect to jib types, age and crane size. As a result, the number of crack occurrences were the largest in mast parts, followed by main jib part. Moreover, it was found that turntables were important parts deserved to be noticed at the perspective of safe maintenance.
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