• 제목/요약/키워드: Patter

검색결과 60건 처리시간 0.021초

배전급 CNC케이블의 결함 종류에 따른 부분방전 분포특성 (Partial Discharge Distribution Characteristics along Defect of CNC Cable)

  • 윤재훈;강성화;최한식;임기조
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2010년도 하계학술대회 논문집
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    • pp.102-102
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    • 2010
  • A purpose of this paper is to recognize partial discharge pattern for cable insulation. The classification of PD sources was widely studied for two decades. this research sought to use the partial discharge detection method, and to diagnose the interface of cable, which is deemed vulnerable of cable systems. A research abalyzed faults that can occur in the interface of cable joint as well as accident mechanisms, manufactured test 22.9kV CNC cable, invented artificial faults and carried out partial discharge detection experiments. As a result, various PD pattern along defect measured and distinguished.

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대면적 광 정보저장매체의 나노성형에 대한 기술 개발 (Nano Molding Technology for Optical Storage Media with Large-area Nano-pattern)

  • 신홍규;반준호;조기철;김헌영;김병희
    • 한국정밀공학회지
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    • 제23권4호
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    • pp.162-167
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    • 2006
  • Hot embossing lithography(HEL) has the production advantage of comparatively few process step, simple operation, a relatively low cost for embossing tools(Si), and high replication accuracy for small features. In this paper, we considered the nano-molding characteristic according to molding parameters(temperature, pressure, times, etc) and induced a optimal molding condition using HEL. High precision nano-patter master with various shapes were designed and manufactured using the DRIE(Deep Reactive ion Etching), LPCVD(Low Pressure Chemical Vapor Deposition) and thermal oxidation process, and we investigated the molding characteristic of DVD and Blu-ray nickel stamp. We induced flow behaviors of polymer, rheology by shapes and sizes of the pattern through various molding experiments. Finally, with achieving nano-structure molding with high aspect ratio, we will secure a basic technology about the molding of large-area nano-pattern media.

도시 맞벌이부부의 금전관리와 경제생활주도권 유형의 측정방법 및 실태 (Money Management and Control of Family Finances Patterns of Urban Dual-Earner Couples.)

  • 한지수;이연숙
    • 가족자원경영과 정책
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    • 제2권1호
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    • pp.1-14
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    • 1998
  • The purpose of this study was to examine patterns ofmoney management and control of family finances. The data for this study were collected from 311 wives who were currently employed in professional, managerial, and clerical occupation living or employed in Seoul. Frequency, percentage and cross-tab analysis were used to analyze the data. The results were as follows: 1) money management patterns were classified into six types; wife-management pattern, wife-management/husband-alienation pattern, wife-management/husband-involvement patter, joint management pattern, joint/separate mixed pattern, and multi management pattern. Among them wife-mannagement pattern was used most frequencly by the couples. 2) Four family finance control patterns were found and named by joint control, wife control, husband control, and self control. The joint control pattern was found to be the most prevalent one. 3) Money management patterns influenced how family finances were controled.

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이태리 패션 브랜드의 브랜드 아이덴티티(Brand Identity)와 관련한 텍스타일 패턴 디자인 개발 유형에 관한 연구 (A Study on the Style of Textile Pattern Design Identifying Italian Fashion Brand)

  • 이은옥
    • 복식문화연구
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    • 제9권1호
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    • pp.127-140
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    • 2001
  • The purpose of this study is to examine the effect of the style of textile pattern design on the process of building the fashion brand identity. In so doing, the study analyzes the color, style, and layout of the motive, and the drawings of the patter of textile of top seven Italian fashion brands which present in presented eight fashion design collections during the 1997∼2000 period. The results of the analysis show that the seven brands exhibit their unique characteristics of the color, style, and layout of the motive, and the drawings of the pattern of textile. The results can be interpreted in a way that their distinct features oft textile pattern design indeed contribute toward the establishment of their unique brand image and brand identity. The results of this study suggests that to initiate the top fashion brand, the fashion industry should develop its own unique style of textile pattern design.

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인공신경망에 의한 기계구동계의 작동상태 예지 및 판정 (Forceseeability and Decision for Moving Condition of the Machine Driving System by Artificial Neural Network)

  • 박흥식;서영백;이충엽;조연상
    • 한국생산제조학회지
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    • 제7권5호
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    • pp.92-97
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    • 1998
  • The morpholgies of the wear particles are directly indicative of wear processes occuring in machinery and their severity. The neural network was applied to identify wear debris generated from the machine driving system. The four parameters(50% volumetric diameter, aspect, roundness and reflectivity) of wear debris are used as inputs to the network and learned the friction condition of five values(material 3, applied load 1, sliding distance 1). It is shown that identification results depend on the ranges of these shape parameters learned. The three kinds of the wear debris had a different patter characteristic and recognized the friction condition and materials very well by artificial neural network. We discussed how the network determines differencee in wear debris feature, and this approach can be applied to foreseeability and decisio for moving condition of the Machine driving system.

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지하레이더를 이용한 고고학적 유적지 탐사에 관한 연구 (A Study on Detecting of Archaeological sites Using GPR)

  • 이종출;이영대;이현재;장호식
    • 한국측량학회:학술대회논문집
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    • 한국측량학회 2003년도 춘계학술발표회 논문집
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    • pp.513-516
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    • 2003
  • This study was performed in two ways, which are 'Before' 'After' carrying out trench search through GPR which is called 'Non Destructive Geophysical' to the expected area where the remains of historic interest could be distributed within the construction site from Dae-gu to Busan. As a result, the layer containing gravel and sand has more irregular specular surface then others containing silt and clay. And, this paper, irregular specular surfaces of prominence and depression patter appeared. After performing trench search, verified that the site yield dolmens and lots of stone implements.

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디지털마이크로미러소자를 동적마스크 패턴생성기로 응용한 마이크로광조형 (Microstereolithography using a Digital Micromirror Device as the Dynamic Pattern Generator)

  • 주재영;김성훈;변홍석;이관행;정성호
    • 한국정밀공학회지
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    • 제23권7호
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    • pp.146-151
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    • 2006
  • In order to increase the productivity of conventional microstereolithography, a new method using a digital micromirror device ($DMD^{TM}$) as the dynamic patter generator is proposed. The deviation from the level of clear optical images to the level of photopolymer surface is a key for the fabrication of an accurate 3D structure, so this deviation is minimized by controlling the viscosity of FA 1260T with organic solvents. After finding the appropriate process variables, the feasibility of microstructure fabrication such as a microgear and a microsphere is demonstrated. Microstereolithography with $DMD^{TM}$ showed the potential to replace the existing focused beam microstereolithography.

G-and C-Banding Pattern Analyses of Korean Rodents: I. Chromosome Banding Patterns of Striped Field Mice (Apodemus agrarius coreae) and Black Rats (R. rattus rufescens)

  • Koh, Hung-Sun
    • 한국동물학회지
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    • 제25권2호
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    • pp.81-92
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    • 1982
  • 한국내 4개 지역에서 채집된 17마리의 등줄쥐 (Apodemus agrarius coreae)의 G-와 C-banding patter을 분석한 결과 첫 번째 염색체쌍의 다형현상 (차단부 및 단부)은 동원체 주위의 이질염색질이 어떤 때는 short arm의 형태로 나타나기 때문이라는 것이 밝혀졌다. 한국내 2개 지역에서 채집된 곰쥐 (R. rattus rufescens)의 G-와 C-banding pattern을 분석한 결과 첫 번째 염색체쌍의 다형현상 (차단부 및 단부)은 pericentric inversion에 기인한다는 것이 밝혀졌다.

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트래픽 패턴분석 기반 실시간 모의 트래픽 생성 및 검증 기법 연구 (A Study on the Real-time Simulated Traffic Generation and Verification Methods based on the Traffic Pattern Analysis)

  • 강현중;김현철
    • 디지털산업정보학회논문지
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    • 제5권4호
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    • pp.69-76
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    • 2009
  • High-speed services and bulk transmission were available by the development of the network and communication technologies. Moreover various next-generation converged services are undergoing a change by various services. This paper presents improved real-time simulated traffic generation and verification schemes based on the actual traffic pattern analysis. For this, we analyzed traffic patterns of actual application system and generated simulated traffics. We also suggested scheme that verify similarity of simulated traffic and actual traffic.

모바일 환경에서 Haar-Like Features와 PCA를 이용한 실시간 얼굴 인증 시스템 (Implementation of Realtime Face Recognition System using Haar-Like Features and PCA in Mobile Environment)

  • 김정철;허범근;신나라;홍기천
    • 디지털산업정보학회논문지
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    • 제6권2호
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    • pp.199-207
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    • 2010
  • Recently, large amount of information in IDS(Intrusion Detection System) can be un manageable and also be mixed with false prediction error. In this paper, we propose a data mining methodology for IDS, which contains uncertainty based on training process and post-processing analysis additionally. Our system is trained to classify the existing attack for misuse detection, to detect the new attack pattern for anomaly detection, and to define border patter between attack and normal pattern. In experimental results show that our approach improve the performance against existing attacks and new attacks, from 0.62 to 0.84 about 35%.