• 제목/요약/키워드: multi-purposes

검색결과 387건 처리시간 0.03초

Electronic System Design of SRI (Super Resolution Imager) for satellite

  • Park Jong-Euk;Kong Jong-Pil;Heo Haeng-Pal;Kim Young Sun;Youn Heong-Sik;Paik Hong Yul
    • 대한원격탐사학회:학술대회논문집
    • /
    • 대한원격탐사학회 2004년도 Proceedings of ISRS 2004
    • /
    • pp.483-485
    • /
    • 2004
  • The SRI (Super Resolution Imager) is the development project for the next generation satellite camera. This camera has more high resolution than the present satellite camera. It's used by very accurate observation and other multi-purposes. In this paper, the SRI electronic system is described in terms of H/W (Configuration and Function operation).

  • PDF

Ranging Performance for Spoofer Localization using Receiver Clock Offset

  • Lee, Byung-Hyun;Seo, Seong-Hun;Jee, Gyu-In;Yeom, Dong-Jin
    • Journal of Positioning, Navigation, and Timing
    • /
    • 제5권3호
    • /
    • pp.137-144
    • /
    • 2016
  • In this paper, the performance of ranging measurement, which is generated using two receiver clock offsets in one receiver, was analyzed. A spoofer transmits a counterfeited spoofing signal which is similar to the GPS signal with hostile purposes, so the same tracking technique can be applied to the spoofing signal. The multi-correlator can generate two receiver clock offsets in one receiver. The difference between these two clock offsets consists of the path length from the spoofer to the receiver and the delay of spoofer system. Thus, in this paper, the ranging measurement was evaluated by the spoofer localization performance based on the time-of-arrival (TOA) technique. The results of simulation and real-world experiments show that the position and the system clock offset of the spoofer could be estimated successfully.

카본블랙이 첨가된 유리직물 복합재 샌드위치 구조의 전자기적 특성 (Electromagnetic Characteristics of Carbon Black filled Class-Fabric Composite Sandwich Structure)

  • 박기연;이상의;강래형;한재흥;김천곤;이인
    • 한국복합재료학회:학술대회논문집
    • /
    • 한국복합재료학회 2003년도 추계학술발표대회 논문집
    • /
    • pp.234-237
    • /
    • 2003
  • The absorption and the interference shielding of the electromagnetic wave problem have been a very important issue for commercial and military purposes. This study dealt with the simulation reflection loss for electromagnetic absorbing sandwich type structures in X-band(8.2Ghz~12.4GHz). Glass/epoxy composites containing conductive carbon blacks were used for the face sheets and styrofoams were used for the core. Their permittivities in X-band were measured using the transmission line technique. Simulation results of 3-1ayered sandwich type structures showed the reflection loss using the theory about transmission and reflection in a multi-layered medium.

  • PDF

셀 방법을 이용한 3차원 원형 브레이드 유리 섬유 강화 복합 재료의 구성 방정식 (Constitutive Equations for Three Dimensional Circular Braided Glass Fiber Reinforced Composites Using Cell Modeling Method)

  • 이원오;정관수
    • 한국복합재료학회:학술대회논문집
    • /
    • 한국복합재료학회 2003년도 추계학술발표대회 논문집
    • /
    • pp.71-74
    • /
    • 2003
  • The cell modeling homogenization method to derive the constitutive equation considering the microstructures of the fiber reinforced composites has been previously developed for composites with simple microstructures such as 2D plane composites and 3D rectangular shaped composites. Here, the method has been further extended for 3D circular braided composites, utilizing B-spline curves to properly describe the more complex geometry of 3D braided composites. For verification purposes, the method has been applied for orthotropic elastic properties of the 3D circular braided glass fiber reinforced composite, in particular for the tensile property. Prepregs of the specimen have been fabricated using the 3D braiding machine through RTM (resin transfer molding) with epoxy as a matrix. Experimentally measured uniaxial tensile properties agreed well with predicted values obtained fer two volume fractions.

  • PDF

The Effects of Service Quality on Long-Term Orientation with Customers in Fashion Retail Stores

  • Ju, Seong-Rae;Chung, Myung-Sun
    • The International Journal of Costume Culture
    • /
    • 제9권1호
    • /
    • pp.15-26
    • /
    • 2006
  • The purposes of this study were 1) to identify the dimension of perceived service quality of fashion retail stores in the basis of expanded marketing mix, 2) to investigate the effect of each dimension on long-term orientation/customer satisfaction, trust, commitment and WOM/repurchase intention) on perceived service quality. The questionnaires were administered to 333 women shopped in a fashion retail store in Gwang-ju city. Data were analyzed by using exploratory and confirmatory factor analysis, Cronbach' ${\alpha}$, and multi-regression analysis. The results were as follows: 1) The dimension of perceived service quality based on expanded marketing mix were classified as follow: product, price, place, promotion, people, physical evidence, process services. Long-term orientation was categorized into four factors: customer satisfaction, trust, commitment, WOM/repurchase intention. 2) For the effect of the perceived service quality by dimension, product, people, physical evidence, process services have significant effect on long-term orientation, while price, place, promotion services have not significant.

  • PDF

대학생의 건강수준 향상을 위한 포괄적 건강증진 정책 방안 (Development of Comprehensive Health Promotion Policies for University Students)

  • 박남수
    • 보건교육건강증진학회지
    • /
    • 제28권5호
    • /
    • pp.17-34
    • /
    • 2011
  • Objectives: The purposes of this study were to describe comprehensive health promotion policies for university students in Korea and to discuss the implications based on the socio-ecological approaches. Methods: A web-based search was performed to identify empirical programs and literature to develop health promotion policies and strategies in university settings. Results: Five domains for policy development are suggested for comprehensive health promotion policies in universities: evidence-based policy development; establishment of supportive policy through network and partnership; infrastructure of university; systems approach with education, environment, enforcement and policy tailored for universities; and sustainability for policy implementation. Conclusions: For healthy universities and students, government, community, health professionals, organizations and universities are all responsible as main agents for the five domains suggested in this study. Multi-level approaches with political, organizational and environmental changes should be sustained as an ongoing process.

생활한복의 착용 상황에 따른 이미지와 구매의도 (Casual Hanbok's Image According to Wearing Situation and Purchasing Intention)

  • 심준영;김용숙
    • 복식
    • /
    • 제53권3호
    • /
    • pp.155-163
    • /
    • 2003
  • The purposes of this study were to identify the differences of the Casual Hanbok's image perception according to wearing situation and to certify factors affecting the Casual Hanbok's purchase. Self administered questionnaires were used. The subjects were 596 women in Chonbuk Province and done during August. 2002. Proportion, percentage, mean, factor analysis, ANOVA and multi-regression were done for data analysis. The results were as follows ; 1. Factors in the Casual Hanbok's image perception were fashion, elegant, comfort, innovation and tradition. The total variences were 53.84%. Especially tradition and innovation factors were very Important. 2. Casual Hanbok's perceived image in formal situation were higher in factors of fashion, elegance, comfort, innovation, and tradition than the perceived image in mind. And the image of informal situation was higher in factors of fashion, elegant and innovation than the perceived image in mind. 3. Purchasing intention was affected by the Casual Hanbok's fashion, elegance, innovation, and tradition, and their influence was 18.10%. Casual Hanbok wearing frequencies affected the purchasing intention significantly.

컨텐츠 통합 관리 시스템의 설계 및 구현 (Design and Implementation of Contents Integration and Management System)

  • 이중화;김태석
    • 한국정보통신학회:학술대회논문집
    • /
    • 한국해양정보통신학회 2003년도 추계종합학술대회
    • /
    • pp.472-475
    • /
    • 2003
  • 본 연구에서는 각 지역 데이터베이스에 저장되어 있는 컨텐츠들을 통합 관리할 수 있는 컨텐츠 통합 관리 시스템을 개발하였다. 컨텐츠 통합 관리 시스템은 각 지역 데이터베이스에 저장되어 있는 컨텐츠들의 저장 스키마를 표준화된 XML 문서로 변환하여 통합된 전역 데이터베이스를 생성한다. 본 연구에서 개발한 컨텐츠 통합 관리 시스템은 컨텐츠의 지속적인 확보를 위해 서로 다른 환경에서 저장되고 운영되고 있는 컨텐츠를 통합관리 할 수 있는 효과적인 방법을 제시한다.

  • PDF

버너Windbox의 설계기술에 관하여

  • 한용식;김명배
    • 한국연소학회:학술대회논문집
    • /
    • 한국연소학회 1995년도 제2회 KOSCI Workshop
    • /
    • pp.123-130
    • /
    • 1995
  • An experimental study for the improvement of combustion air distribution in the exit of burner windbox is carried out. Since the distribution of combustion air in the burner directly affects the stability and the shape of flame, it should be as uniform as possible. Furthermore multi-burner windbox should be designed to supply the suitable quantity of combustion air for each burner. For these purposes, thin splitting plates are installed in the windbox, which make the flow control and setup the circumferentially uniform pressure field at each windbox exit. The effect of splitters on the velocity distribution of combustion air is investigated by the use of a small sized two-burner windbox model having a dynamical similarity to the prototype. Even though not the best one, a configuration of splitters which seems to give a practically useful result is suggested.

  • PDF

다시기 위성영상을 이용한 소유역의 토지피복변화 평가 (The Land Cover Changes at the Small Watersheds Using the Multi-temporal Satelite Images)

  • 강문성;박승우
    • 농촌계획
    • /
    • 제6권2호
    • /
    • pp.50-58
    • /
    • 2000
  • The purposes of the study were to detect and evaluate the historical land use and land cover changes on the Balan watersheds from three thematic mapper (TM) data, which were taken in 1985, 1993, and 1996. The supervised and unsupervised classification methods were adopted to classify five land cover categories: Paddy, upland, forest, residential, and water. The results indicated residential areas increased significantly during the past eleven years, Forest and paddy were converted to the urban areas. Future land cover patterns were forecasted using a Markov chain method, and the simulated land coiler change ratios presented.

  • PDF