• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 하계학술대회 논문집 D
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• pp.2729-2731
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• 2001

In this paper, we studied on the real-time environment map building for the mobile robot navigation using the stereo camera system. Distance measurement are necessary to build the environment map. We used a area-based stereo matching for the distance measurement with the stereo camera system. To reduce the computation time, we used DSP processor on the vision board, took a suitable area size for stereo matching, and used hierarchical search method. Using the fast acquired distance values, the environment map was built.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2017년도 추계학술대회
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• pp.101-102
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• 2017

오리엔티어링은 지도와 나침반 그리고 포인트 맵을 지니고 진행하는 스포츠이다. 그러나 지도와 나침반을 지닌다는 번거로움과 걸음수와 소요시간의 정확도가 떨어지는 문제점이 발생한다. 이 논문에서는 오리엔티어링에서 필요한 기능들을 통합시켜 오리엔티어링 어플리케이션을 개발한다. 지도와 나침반 그리고 걸음수를 하나의 UI에 통합시켜 한번에 볼수 있어 번거로움을 없애고, 실시간으로 걸음수를 세고 소요시간 측정을 통하여 정확도를 보다 높일수 있다.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2003년도 추계학술발표회 논문집
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• pp.49-54
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• 2003

As of date, the cadastral information which is the utility to be computerized have not been identical with local autonomous entities and relational groups each other and updated real-time, therefore the relation group or the academic circles carried out in many researches on a cadastral map matching, but the cadastral maps have not been even occurred the expansion and contraction so that the theory arrangement doesn't seem simple as to a cadastral map matching. As being take such reality into consideration, We have to be based on $\boxDr$construction ministry of the rules for continuous map$\boxUl$ for a continuous cadastral map with using PBLIS data; so the operators use Autodesk Map 5 which added applications and match the neat line by the identical scale, the different scale, the district boundary and the origin according to the judgement myself We have the purpose to minimize the problem as analyzing the accuracy between the parcel coordinates If the matched map and ones of moved map.

• 소프트웨어공학소사이어티 논문지
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• 제25권4호
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• pp.63-67
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• 2012

다양한 분야에서 빠르게 대용량의 자료가 생성됨에 따라 이를 처리하기 위해 분산 프로그래밍 모델인 MapReduce의 활용이 도입되고 있다. 본 논문에서는 SUN Blade150에 Solaris와 Linux 환경의 클러스터 시스템을 구축한 뒤 해당 환경에서의 MapReduce 미들웨어인 Hadoop 에서 응용수행에 대한 평균 시간 및 표준 편차를 평가하여 Hadoop 기반 MapReduce 구현이 어떠한 클러스터 시스템에 의해 성능이 영향을 미치는지를 보인다.

• 한국축산식품학회지
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• 제31권2호
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• pp.147-157
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• 2011

Mycobacterium avium paratuberculosis (MAP), the cause of Johne's disease in animals, may be a causative agent of Crohn's disease (CD) in humans, but the evidence supporting this claim is controversial. Milk, meat, and water could be potential sources of MAP transmission to humans. Thus, if the link between MAP and Crohn's disease is substantiated, the fact that MAP has been detected in retail foods could be a public health concern. The purpose of the present study was to review the link between MAP and CD, the prevalence of MAP in foods, heat inactivation, control of MAP during food processing, and detection methods for MAP. Although MAP positive rates in retail milk in nine countries ranged from 0 to 2.9% by the culture method and from 4.5 to 15.5% by PCR, high temperature short time pasteurization can effectively control MAP. The effectiveness of pasteurization to inactivate MAP depends on the initial concentration of the MAP in raw milk. Development of highly sensitive and specific rapid detection methods for MAP may enhance investigation into the relationship between MAP and CD, the prevention of the spread of MAP, and problem-solving related to food safety. Collaboration and efforts by government agencies, the dairy industry, farmers, veterinarians, and scientists will be required to reduce and prevent MAP in food.

• 대한지구과학교육학회지
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• 제3권1호
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• pp.47-54
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• 2010

The purpose of this study is finding examine the Thinking Maps and how to use Thinking Maps effectively in Science Education. The result of this study were as follows: First, There are 8 type Maps, Circle Map, Tree Maps, Bubble Map, Double Bubble Map, Flow Map, Multi Flow Map, Brace Map, Bridge Map. Each Maps are useful in the following activities ; Circle Map-Express their thoughts. Tree Map-Activities as like determine the structure, classification, information organization. Bubble Maps-Construction. Double Bubble Map-Comparison of similarities and differences. Flow Map-Set goals, determine the result of changes in time or place. Multi Flow Map-Analysis cause and effect, expectation and reasoning. Brace Map-Analysis whole and part. Bridge Map-Activities need analogies. Second, each element of inquiry has 1~2 appropriate type of Thinking Maps. So student can choose the desired map. Third, the result of analysing of Science Curriculum Subjects, depending on the subject variety maps can be used. Therefore the Thinking Maps can be used for a variety on activities and subject. And student can be selected according to their learning style. So Thinking Maps are effective to improve student's Self-Directed Learning.

• 제어로봇시스템학회논문지
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• 제2권2호
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• pp.108-114
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• 1996

We present proofs of the stability and convergence of Self-organizing feature map (SOFM) neural network with time-invarient learning rate and binary reinforcement function. One of the major problems in Self-organizing feature map neural network concerns with learning rate-"Kalman Filter" gain in stochsatic control field which is monotone decreasing function and converges to 0 for satisfying minimum variance property. In this paper, we show that the stability and convergence of Self-organizing feature map neural network with time-invariant learning rate. The analysis of the proposed algorithm shows that the stability and convergence is guranteed with exponentially stable and weak convergence properties as well.s as well.

• 대한인간공학회지
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• 제23권1호
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• pp.23-38
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• 2004

This study examines different types of navigation aids when a navigator performs target search tasks in Virtual Environments. The factors manipulated in this study include target information (None/Landmark). navigational difficulty (Easy/Difficult). and map types (None/2D Map/3D Map). Navigation performance was measured by using task completion time and the number of target locations that was remembered by the navigator. In addition, user satisfaction on the navigation aids was also measured by using a 7-point Likert's scale. The results showed that the user satisfaction on the landmark was high when the 3D Map was provided. The task completion time shortened when navigational difficulty was set at "easy." The number of remembered target locations was large when there was no landmark. It was also large with an easy navigation task. or a map (20 or 3D) provided. Guidelines for selecting navigation aids were proposed based on the results.

• 한국정보처리학회논문지
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• 제1권2호
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• pp.263-271
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• 1994

제조장치의 네트워크 환경은 PLC, 로보트와 같은 프로그래머블디바이스에 Mini- MAP 네트워크 접속장치를 장착하여 원격제어가 가능한 공정한 네트워크 시스템 구성 이 연구되고 있다. 본 논문에서 설계된 공정 네트워크 접속장치는 MAP 3.0 규격을 근거로 MAC부 계층은 TBC(token bus controller)가 수행하고, LLC부 계층은 class 3으로, 응용계층은 MMS(manufacturing message standard)를 기본으로 설계하였다. 구현된 소프트웨어는 Mini-MAP의 실시간 정보 전송 성능을 보존하기 위하여 C Exec. 의 real-time executive를 기반으로 설계하여 firmware로 탑재하였다. 본 접속장치는 군관리 공정 모델에서 시험 운영하였으며, LLC 계층의 오류검출과 전송기능은 프로토 콜 분석기를 이용하여 확인하였으며, MMS는 적합성 시험을 이미 받은 MMS를 탑재한 상용제품과의 통신운영을 통하여 적합성 시험을 확인하였다.

• 한국멀티미디어학회논문지
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• 제11권7호
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• pp.1025-1034
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• 2008

본 논문은 모바일 디바이스에 GML을 효율적으로 공급하고 가시화하기 위한 맵 분할 및 캐싱 기법을 제안하고, 이를 적용한 GridGML을 구현한다. GridGML은 GML의 가장 큰 단점인 가중성을 극복하기 위해 GML 속성들 중 맵 가시화 핵심 부분만을 추출 및 클래스 객체로 경량화 한다. GridGML은 모바일 디바이스에 실시간으로 맵을 공급하고 가시화하기 위해 모바일 디바이스 가시영역을 기준으로 분할 관리하며, 분할 영역은 전송상의 이점을 위해 바이트화 하여 전송한다. 그리고 모바일 디바이스에서는 수신된 분할영역을 조합한 후 모바일 디바이스에서 표현하는 영역에 따라 4개의 가시영역으로 재분할 및 가시화를 한다. 또한, 자원의 효율적 운영을 위해 이전에 전송받은 맵의 중복성을 고려한 캐싱 알고리즘을 적용하여 관리한다. 맵의 객체 밀집 지역에 대해서는 전송시간의 지연을 방지하기 위해 적응적 맵 분할 메커니즘을 제안하여 전송시간을 일정함을 유지한다.