• 제목/요약/키워드: Data Collecting

검색결과 2,212건 처리시간 0.024초

차세대 고속열차 통신네트워크 기술개발 동향 (Technology development trend of the train network for high speed train)

  • 최권희;심재철;백정현;이병원;강기석
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2005년도 추계학술대회 논문집
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    • pp.1005-1009
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    • 2005
  • The On Board Computer System (ORCS) used for rolling stocks is one of the core equipments in trains, which deals with collecting real-time data of a train to display and record the train's statuses, control the train, and support the driver and maintenance function. Resides, due to high reliability and high speed communication required lately for various electronics including signal1ing devices, train protection system, and multimedia, the necessity of a more robust train communication network is on the lise. This study aims at understanding the technological trend of the current train communication network in order to rapidly cope with the tendency above and providing fundamental data for designing a more advanced communication network for high-speed trains hereafter.

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일사량의 성분 분석에 관한 연구 (A Study on the Analysis of Solar Radiation Components)

  • 조덕기;전일수;이태규;강용혁;오정문
    • 한국태양에너지학회 논문집
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    • 제21권1호
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    • pp.43-49
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    • 2001
  • Informations of the solar radiation component are essential for modeling various solar energy systems. These Informations are particularly used for middle and high temperature applications, those need concentrating direct normal insolation. In order to estimate the performance of concentrating systems, it is necessary to know the intensity of the beam radiation, as only this component can be concentrated. The Korea Institute of Energy Research(KIER) has began collecting solar radiation component data since August, 1996. KIER's component data will be extensively used by concentrating system users or designers as well as by research institutes.

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Software-based Real-time GNSS Signal Generation and Processing Using a Graphic Processing Unit (GPU)

  • Im, Sung-Hyuck;Jee, Gyu-In
    • Journal of Positioning, Navigation, and Timing
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    • 제3권3호
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    • pp.99-105
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    • 2014
  • A graphic processing unit (GPU) can perform the same calculation on multiple data (SIMD: single instruction multiple data) using hundreds of to thousands of special purpose processors for graphic processing. Thus, high efficiency is expected when GPU is used for the generation and correlation of satellite navigation signals, which perform generation and processing by applying the same calculation procedure to tens of millions of discrete signal samples per second. In this study, the structure of a GPU-based GNSS simulator for the generation and processing of satellite navigation signals was designed, developed, and verified. To verify the developed satellite navigation signal generator, generated signals were applied to the OEM-V3 receiver of Novatel Inc., and the measured values were examined. To verify the satellite navigation signal processor, the performance was examined by collecting and processing actual GNSS intermediate frequency signals. The results of the verification indicated that satellite navigation signals could be generated and processed in real time using two GPUs.

청소년기 자녀의 부모에 대한 애착과 자아개념과의 관계에 관한 연구 (The Relation between Adolescent's Attachment on Parent and Self-Concept)

  • 정현희
    • 대한가정학회지
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    • 제31권1호
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    • pp.85-95
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    • 1993
  • The purpose of this study was to investigate the relationship between adolescent's attachment on parent and self-concept. The subjects were 271 students in the second grade of the junior high school in Busan. The Inventory of Parent and Peer Attachment scale(IPPA) and the Self-Concept test were used for collecting data. For the statistical analysis of data, t-test, F-test, Scheffe test, Pearson correlation and Regression were used. The results were as follows : 1. There were significant differences in attachment according to socio-demographic variables(sex, parent's age, parent's education, parent's job, income). 2. There were significant differences in self-concept according to socio-demographic variables(sex, parent's age, parent's education, parent's job, income). 3. Adolescent's attachment on parent was significantly correlated with adolescent's self-concept.

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운동학적 근전도의 활용 (The use of kinesiologic electromyography)

  • 원종임
    • 대한물리치료과학회지
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    • 제9권4호
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    • pp.169-176
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    • 2002
  • The kinesiologic electromyograhy(KEMG) is one of the most common use in physical therapy for understanding normal function and dysfunction of the neuromuscular system. Physical therapists concerned to patterns of muscle response, position, type of muscle contraction, onset and cessation of activity, the level of muscle response in relation to effort, and type of muscle contraction. Also they are use KEMG to assess the exercises for facilitate or for inhibit specific muscle activity. However there is a few references that provide information of KEMG Thus, the purpose of this article is for the use and interpretation of KEMG data. This article will guide beginning researchers for collecting, managing and analyzing of KEMG data.

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Multi-Sensor Signal based Situation Recognition with Bayesian Networks

  • Kim, Jin-Pyung;Jang, Gyu-Jin;Jung, Jae-Young;Kim, Moon-Hyun
    • Journal of Electrical Engineering and Technology
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    • 제9권3호
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    • pp.1051-1059
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    • 2014
  • In this paper, we propose an intelligent situation recognition model by collecting and analyzing multiple sensor signals. Multiple sensor signals are collected for fixed time window. A training set of collected sensor data for each situation is provided to K2-learning algorithm to generate Bayesian networks representing causal relationship between sensors for the situation. Statistical characteristics of sensor values and topological characteristics of generated graphs are learned for each situation. A neural network is designed to classify the current situation based on the extracted features from collected multiple sensor values. The proposed method is implemented and tested with UCI machine learning repository data.

PDA를 이용한 유아 원격 감시 시스템 (The Remote Monitoring System for Baby using by PDA)

  • 이정익
    • 한국산학기술학회논문지
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    • 제10권8호
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    • pp.1779-1782
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    • 2009
  • 본 개발 시스템은 적외선 센서 네트워크 시스템을 통해 RS-232 통신 수신 데이터(각 인큐베이터의 온도, 습도)를 얻고, 각 채널 당 각각의 사람에 대한 감시 시스템이 작동된다. 이 감시 시스템은 TCP/IP 통신을 통한 PDA 뿐만이 아니라 개인용 컴퓨터에도 작동된다. 이 시스템은 LabVIEW와 PDA 모듈의 통신 함수에서 활성화되어 작동되며, 다른 도구를 이용하는 것보다 처리시간이 상당히 절약된다.

일부 인문계 고등학교 남학생들의 건강행위에 관한 연구 (A Study on the Health Behavior of High School Students)

  • 김춘미;최정명;현혜진
    • 한국학교보건학회지
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    • 제13권1호
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    • pp.109-115
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    • 2000
  • The Purpose of this study is to analyze the health behavior of high school students and to find factors influencing it. A questionnaire survey was used for collecting data from 201 male students between May 1 and June 30, 1993. The data were analyzed by the multiple regression technique in an SPSS package. The major results are as follows: (1) 84.5% of the students responded to the survey are regularly exercising to promote their health and 44.8% of them are doing something to manage stress. (2) 28.9% of the students are smoking, 43.3% of them are drinking, 5% of them are taking adhesives, 6.5% are taking stimulants, and 4.5% of them are taking analgesics. (3) while self-efficacy of the students and health interests of their parents are positively related to health promoting behaviors, they are negatively related to health risk behaviors.

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연관 태그의 군집 알고리즘의 설계 및 구현 (A Design and Development of A Related Tag Clustering Algorithm)

  • 박병재;우종우
    • 한국IT서비스학회지
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    • 제7권4호
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    • pp.199-208
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    • 2008
  • Tagging represents one of the Web 2.0 technology, and has an appropriate mechanism for the classification of dynamically changing Web informations. This technique is capable of searching the Web informations using the user specified tags, but still it has a limitation of providing only the limited informations to the tags. Therefore, in order to search the related informations easily, we need to extend this technique further to search not only the desired informations through the designated tags and also the related informations. In this paper, we first have designed and developed an algorithm that can get a desired tag cluster, which is capable of collecting the searched tags along with the related tags. We first performed a test to compare the difference between the user collected tag data through RSS and the reduced data. The second test focused on the accuracy of extracted related tags that depends on the similarity functions, such as the Pearson Correlation and Euclidean. Finally, we showed the final results visually using the graph algorithm.

패킷 인터셉터를 이용한 DB 쿼리 수집 및 분석기 구현 (An Implementation of DB Query Collecting and Analyzer Using Packet Interceptor)

  • 이재덕;임성한;백남철
    • 한국ITS학회 논문지
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    • 제7권4호
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    • pp.97-106
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    • 2008
  • 본 시스템은 ITS 정보 감사를 지원하기 위한 내부 통제 시스템의 일부이다. 이 시스템은 중요 도로정보 시스템 서버에 접근하는 패킷을 가로챈 후 SQL 쿼리를 분석하여, 접속한 사용자 정보와 데이터 베이스에 접근하려는 DB 정보, 데이터에 대한 조회, 변경, 삭제 정보를 로그로 기록한다. 이 로그 정보는 사용자의 내부 통제 및 데이터베이스 접근 증거로 사용될 수 있다.

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