• 대한치과교정학회지
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• 제2권1호
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• pp.47-52
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• 1971

저자들은 9세 10개월된 Class I discrepancy 증례를 다각적으로 검사한 후 그의 가족력과 Grater. Nance, Mills, Lloyd, Dewe, 등의 생각대로 Clinical arch lenth의 증가를 더 기대할수 없다고 판단하고 연속발치를 시술하여 전치부의 교우교합과 총생이 거의 해소되어 좋은결과를 보이고 있으나, 두부X-선 규격 사진분석에서 보는바와 같이 Interincisal angle이 약간 크므로 향후 예견되는 Deep Overbite와 Incisal Inclination Control에 치료의 역점를 두고자한다.

• 생물환경조절학회지
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• 제1권1호
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• pp.37-51
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• 1992

Quantizing and extracting visual features of mushroom(Lentinus edodes L.) are crucial to the sorting and grading automation, the growth state measurement, and the dried performance indexing. A computer image processing system was utilized for the extraction and measurement of visual features of front and back sides of the mushroom. The image processing system is composed of the IBM PC compatible 386DK, ITEX PCVISION Plus frame grabber, B/W CCD camera, VGA color graphic monitor, and image output RGB monitor. In this paper, an automatic thresholding algorithm was developed to yield the segmented binary image representing skin states of the front and back sides. An eight directional Freeman's chain coding was modified to solve the edge disconnectivity by gradually expanding the mask size of 3$\times$3 to 9$\times$9. A real scaled geometric quantity of the object was directly extracted from the 8-directional chain element. The external shape of the mushroom was analyzed and converted to the quantitative feature patterns. Efficient algorithms for the extraction of the selected feature patterns and the recognition of the front and back side were developed. The developed algorithms were coded in a menu driven way using MS_C language Ver.6.0, PC VISION PLUS library fuctions, and VGA graphic functions.

• 사상체질의학회지
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• 제17권2호
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• pp.46-51
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• 2005

1. Objectives The purpose of this study is to objectify the diagnosis of Sasang Constitution. Using the methods of this study, it will improve to classificate Sasang Constitution. 2. Methods 1) Automatic feature extraction of human frontal faces for Sasang Constitution classification. 2) Color feature extraction of human frontal faces (1)Erosion filtering (skin-white, the other-black) (2) Median median 3. Results and Conclusions Observing a person's shape has been the major method for Sasang Constitution classification, which usually has been dependent upon doctor's intuition as of these days. We are developing an automatic system which provides objective basic data for Sasang Constitution classification. For this, in this paper, firstly, the signal processing techniques are applied to automatic feature extraction of human frontal faces for Sasang Constitution classification. The experiment is conducted to verify the effectiveness of the proposed system.

• 대한화학회지
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• 제30권4호
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• pp.359-368
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• 1986

Crown ether (DC18C6, DC24C8)과 HDEHP로 알칼리 금속 이온을 용매 추출할 때의 추출평형을 연구하였다. 추출평형상수는 DC18C6계에서 $Na^+순으로 증가하였으며 DC24C8계에서는 $Rb^+순으로 증가하였다. 유기용매상으로 추출되는 추출종은 $M_1(crown ether)_1\;(HDEHP)_1$이며 추출평형상수의 크기는 crown ether의 유기용매상과 수용액상에서의 분배비와 crown ether-알칼리금속 착물의 안정도 상수에 의해서 결정된다.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제16권10호
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• pp.985-989
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• 2010

미래의 스마트 유비쿼터스 컴퓨팅 기반 시스템은 사용자들과 상호작용을 통해 적절한 서비스를 제공할 것 이다. 사용자 요구(Needs)에 맞는 서비스를 제공하기 위해서는 기존의 개발자 중심의 개발보다 사용자의 요구를 반영하는 사용자 중심의 시스템 개발이 필요하다. 이를 위해 이전 논문에서는 사용자 행위 분석 기반 요구 추출방법(User Behavior Analysis Based Needs Extraction Method)을 제안하였다[1]. 본 논문에서는 추출된 사용자의 요구사항을 Fillmore의 Case Grammar을 이용하여 객체 추출 및 모델링 방법을 제안한다.

• 한국방사성폐기물학회:학술대회논문집
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• 한국방사성폐기물학회 2004년도 Proceedings of the 4th Korea-China Joint Workshop on Nuclear Waste Management
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• pp.165-169
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• 2004

It was studied on the reductive extraction between the eutectic salt and Bi metal phases. The solutes were zirconium and the rare earth elements, where zirconium was used as the surrogate for the transuranic(TRU) elements. All the experiments were performed in a glove box filled with argon gas. Two types of experimental conditions were used -high and low initial solute concentrations in salt. Li-Bi alloy was used as a reducing agent to reduce the high chemical activity of Li. The reductive extraction characteristics were examined using ICP, XRD and EPMA analysis. Zirconium was successfully separated from the rare earth elements by the reductive extraction method. The LiF-NaF-KF system was favorable among the fluoride salt systems, whereas the LiCl-KCl system was favorable among the chloride salt systems. When the solute concentrations were high, intermetallic compounds were found near the salt-metal interface.

• 한국통신학회논문지
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• 제40권12호
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• pp.2485-2487
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• 2015

해시태그는 현재 페이스북, 트위터와 같은 SNS와 개인 블로그 등에서 활발하게 사용되고 있다. 하지만 스팸성 목적 또는 게시글 조회수 증가 등의 목적으로 무분별하게 해시태그를 사용하여 태그검색의 효율성이 떨어지고 있다. 이에 따라 본 논문에서는 태그검색의 정확도를 높이고자 기존의 키워드 추출 알고리즘과 단어간 유사도 평가 알고리즘을 이용한 태그 검색 시스템을 제안하였다. 제안하는 시스템의 테스트 결과 태그 검색의 정확도가 향상됨을 알 수 있었다.

• 전자공학회논문지A
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• 제33A권10호
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• pp.152-159
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• 1996

We have designed and implemented an optoelectronic hardware of binary phase extraction joint transform correlator (BPEJTC) which provides higher peak-to-sidelobe ratio than many other versions of JTC that has been published so far and does not produce correlation peaks due to intra-class association, to construct a multi-target tracking system. The digital processing unit controlling the entire system plays the part of modifying and binarizing the joint transform power spectrum (JTPS) and the optical processing unit is mainly used to take fourier transform operations. Some experimental results conducted by designed system along with its architecture showed the processing rate of 6 frames per second, thereby the potential applicability of the proposed system to real-time multitarget tracking system is given.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2002년도 추계학술대회 논문집 전력기술부문
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• pp.29-31
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• 2002

Purpose of the 765kV trial operation conducted for the first time in our country are performance verification of domestic developed equipment(765kV M.Tr, GIS,etc) and extraction of problem in advance to commercial operation and cultivation of operation ability. The trial operation of 765kV substation was finished successfully under the positive supports of institutes. manufactures. and constructers. It is expected that extraction of problems in advance and accumulation of operation techniques through the trial operation of 765kV substation will be contributed largly to the realization of the without a hitch operation of 765kV system.

• 한국자동차공학회논문집
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• 제23권1호
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• pp.1-10
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• 2015

In urban area, since multipath and signal attenuations frequently occur due to street trees, street lights and buildings, it is difficult to obtain accurate navigation solution using GPS. As these problems also impact negatively on the INS/GPS coupled system, implementing advanced transportation systems such as autonomous navigation system and Intelligent Transportation System (ITS) become quite hard. For this reason, to alleviate deterioration of navigation system performance in urban area, direction information extraction algorithm using vision system is proposed in this paper. 2D Finite Rate of Innovation (FRI) technique is applied to extract lane edges. The proposed technique is simulated using road images and feasibility of proposed technique is analyzed through the simulation results.