• 한국터널지하공간학회 논문집
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• 제13권3호
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• pp.199-214
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• 2011

균열, 누수, 박락, 철근노출, 부식, 탄산화 등은 터널 라이닝 건전도 평가항목으로 그 중에서 균열은 주요한 영향요인이다. 1980년 이후로, NATM은 터널의 굴착방법과 링폐합의 지반공학적 개념의 보급과 함께 넓게 적용되었으며, 라이닝에 발생된 균열의 연구도 진행되었으나 종균열에 제한된 연구가 주로 수행되었다. 본 논문에서는 11개의 공용중인 NATM터널의 정밀안전진단 결과를 활용하여 공간적인 위치 및 형태별로 분석하여 터널별 공통된 7개의 균열을 정의, 원인 및 분석, 사례 등을 나타내었다. 종류별 균열은 CCD스캐너 이미지를 3차원으로 분석하여 향후 NATM터널 정기점검 및 정밀안전진단 시 유익한 사례가 휠 수 있도록 하였다.

• 한국구조물진단유지관리공학회 논문집
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• 제26권5호
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• pp.161-170
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• 2022

하천에 설치된 교량의 유지관리는 시설물 안전점검과 그 결과에 따른 보수·보강의 절차를 거쳐 이루어진다. 그 동안 교량 상부구조의 안전점검은 접근성이 용이하여 많은 연구들이 이루어져 왔으나, 하천에 설치된 교각 기초부의 세굴여부에 대하여는 직접조사가 곤란하여 이론에 근거한 관리에 머물러 왔다. 본 연구에서는 이러한 하천에 설치된 교량 기초의 세굴을 음향측심기 및 VRS 등을 활용하여 하상 지반고의 형상을 3D 형태로 구현하였다. 이로써 교량 설치 당시의 하상 지반고와 비교·분석 등을 통해 세굴양상에 대한 예측이 가능하게 되었다. 이 결과들을 바탕으로 해당 교각 기초의 국부세굴 여부 파악 및 장기하상저하 예측을 위한 초기치 자료로 활용한다면 기초세굴로 인한 교량붕괴를 예방할 수 있을 것으로 판단된다.

• Journal of Information Display
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• 제10권4호
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• pp.202-205
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• 2009

An automated circuit repair system was developed for enhancing the yield of nondefective liquid crystal panels, focusing on the resist patterns on the circuit material layer of thin-film transistor (TFT) substrates prior to etching. The developed system has an advantage over the parallel conventional system: In the former, the repair conditions depend on the type of resist whereas in the latter, the repair parameters must be fine-tuned for each circuit material. The developed system consists of a resist pattern defect inspection system and a pattern repair system for short and open defects. The repair system performs fine corrections of abnormal areas of the resist pattern. The open-repair system is equipped with a syringe to dispense resist. To maintain a stable resist diameter, a thermal insulator was installed in the syringe system. As a result, the diameter of the dispensed resist became much more stable than when no thermal insulator was used. The resist diameter was kept within the target of $400{\pm}100{\mu}m$. Furthermore, a prototype system was constructed, and using a dummy pattern, it was confirmed that the system worked automatically and correctly.

• 복식문화연구
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• 제10권6호
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• pp.709-717
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• 2002

In the apparel industry, the technology has been advanced rapidly. The use of 3D scanning systems fur the capture and measurement of human body is becoming common place. Three dimensional digital image can be used for design, inspection, reproduction of physical objects. The purpose of this study is to develop a method that drafts men's basic bodice pattern from scanned 3D body surface shape data. In order to pursue this purpose the researchers developed pattern drafting algorithm. The 3D scanner used in this study was Cyberware Whole Body Scanner WB-4. The bodice pattern drafting algorithm from 3D body surface shape data developed in this study is as follows. First, convert geometric 3D body surface data to 3D polygonal mesh data. Second, develop algorithm to lay out 3D polygonal patches onto a plane using Auto Lisp program. The polygon meshes are coplanar, and the individual mesh is continuously in contact with next one The bodice front surface shape data in polygonal patches form was lined up in bust and waist levels. The back bodice was drafted by lining up the polygonal mesh in scapula, chest, and waist levels. in the drafts, gaps between polygons were formed into the darts.

• 패션비즈니스
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• 제18권5호
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• pp.144-158
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• 2014

National Competency Standards(NCS) is to systemize the competency that is necessary for performing duties in industrial fields and to utilize synthetically duty, vocational education training, and qualification at the national level. The purpose of this study is to analyze the process of NCS development and verification, which systemizes competency units and competency unit elements through the analysis of duty in pattern field. It is to cultivate competent people to be able to promote the development of pattern industry ultimately through being a complementary to educational circles and industry then to give them practical knowledge that is demanded in the field. Furthermore, it is to be utilized as a fundamental data for reforming the system of duty competency evaluation so as to manage personnel career systematically and to improve their competency. Focus Group Interview(FGI) was adapted as the method of this study, which was proceeded 3 times, and validity of the drawn result is verified through expert questionnaire survey. Research result, which is competency units, is 10 as follows; Fit trend analysis, Analysis of sample garment Specification sheet, Pattern making for sample garment, Pattern making for manufacturing garment, Creation of sewing specification, Instruction of manufacturing technique, Sample garment Inspection for quality control, Grading, Calculation of the required material quantities, Quality control.

• 대한예방한의학회지
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• 제23권2호
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• pp.101-115
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• 2019

Objective : This study is aimed to application possibility and status of pattern identification in middle and high school students. Method : This study was cross-sectional study. We recruited 277 students through school doctor program of Seongnam city in 2017. Male students are 66 in middle school, 32 in high school. Female students are 117 in middle school, 62 in high school. For pattern identification, we used the tool of Qui Xui Shui pattern identification in students. Students fill questionnaires in inquiry of pattern identification and Korean medicine doctor diagnosis inspection and palpation of students. Results : Among 277 students, no pattern identification were 114(41.2%). It appeared in the order of phlegm, blood deficinecy, qi deficiency, qi stagnation and qi reversal. Qi deficiency, qi stagnation, qi reversal, blood deficiency and phlegm pattern are statistically significant by gender except blood stagnation. of 277 students, 105 (37.9%) had one more pattern identification. Conclusions : This study showed possibility of Qui Xui Shui pattern for student health management. In the future, large scale follow up study will be needed to clarify the relationship of pattern identification and student's health.

• 한국구조물진단유지관리공학회 논문집
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• 제11권1호
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• pp.103-112
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• 2007

구조 재료와 시공기술의 발달로 구조물은 높고 길게 설계할 수 있게 되었으나, 그에 따른 진동문제와 사용성에 관한 문제가 발생하였고, 구조물의 과다한 변위는 구조물에 심각한 손상을 발생시켰다. 이러한 구조물의 진동 문제를 해결하기 위하여 본 논문에서는 구조물의 상태벡터와 제어력만으로 구성된 훈련패턴을 기본으로 하여 인공신경망이론과 확률신경망이론을 사용하여 구조물의 진동을 능동제어하는 방법을 제안하였다. 구조물의 제어를 위해 LQR 제어알고리즘을 이용하여 구조물의 상태벡터와 제어력을 구한 후, 상태벡터를 입력으로 제어력을 출력으로 하는 인공신경망과 확률신경망의 훈련패턴을 구성하였다. 제안된 방법을 사용하여 Northridge 지진하중을 받는 3층 빌딩구조물을 제어하였고, 제안된 인공신경망과 확률신경망의 제어 결과를 비교하였다.

• 한국정보통신학회논문지
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• 제14권7호
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• pp.1551-1556
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• 2010

본 논문에서는 굴곡에 의한 조도량의 차이와 명암도 차이를 퍼지 기법에 적용하여 개선된 반도체 불량 검출 방법을 제안한다. 제안된 방법은 먼저 회전각과 양선형 보관법을 이용하여 반도체 영상의 각도를 보정하는 전처리 과정을 수행한다. 그리고 굴곡에 대한 조도량의 차이와 패턴 매칭을 이용하여 얻어진 오류 영역의 명암도 차이를 퍼지 소속 함수에 적용하여 결과 값을 추론한다. 최종적으로 비퍼지화된 결과 값을 적용하여 반도체의 초기 불량을 검출한다. 제안한 방법에서 실제 사용되는 반도체 정면 영상과 측면 영상 30쌍을 대상으로 실험한 결과, 기존의 방법에서 판단된 실제 불량 제품을 모두 검출하였다. 기존의 방법은 1mm내의 미세한 굴곡을 가진 정상 제품을 불량으로 판별하였으나 제안된 방법에서는 오류로 검출하지 않고 정상으로 판별하였다. 따라서 기존의 방법에 비해서 반도체의 초기 불량 판단에 효과적으로 적용될 수 있다는 것을 확인하였다.

• 한국의류학회지
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• 제36권6호
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• pp.631-640
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• 2012

This research project investigates the differences of various body locations (between 3D body models) and drapes garments digitally onto 3D body models. Three different subject models will be given explication. It consisted of (1) data collection of three-dimensional scans (2) creation of 3D body representations (3) comparison of avatar shapes and measurements (4) visualization and assessment of 3D body models and their 3D virtual garments. The study tests a theory of impact by differences in avatars by pattern design. A visual inspection of avatars showed clear differences between the six avatar types (in the generating process); however, there was notably less difference between 3D garment simulations based upon the six avatars produced. This demonstrated that there was less influence on the 3D garments than was predicted after a visual inspection of the avatars.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2008년도 추계학술대회논문집
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• pp.699-704
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• 2008

This paper describes a general approach for processing data from an omni-directional guided wave transducer array for the rapid inspection of large plate structures. A basic phased array algorithm is presented that can be applied to any array Geometry. For guided waves on plate, beam steering algorithm is derived and the corresponding beam pattern is analyzed. The algorithms are applied to simulation and experimental data. The results show well its usefulness in structural applications.