• Title, Summary, Keyword: 이동통신 교육장비

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Development and Application of Educational Equipment for Industrial Oriented Engineering Education (현장중심의 공학교육을 위한 교육장비 개발 및 활용)

  • Jang, Kou-Young;Son, Deuk-Soo;Oh, Chang-Heon
    • The Journal of Korean Institute for Practical Engineering Education
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    • v.1 no.1
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    • pp.79-84
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    • 2009
  • It is necessary to use industrial oriented equipment, as well as lecturer who has field experience, textbook and materials for engineering education which meets the change of industrial technology. Current education equipment is composed of general purposed equipment which are used for teaching with ease and convenience instead of field oriented achieving technology. The leads to failure of engineering education to keep up with the change of industrial technology, making engineering education stay far away from field oriented education. This study looks at the case of development of education equipment which takes an important role in engineering education, and suggests the ways of development and utilization of engineering education equipment by analyzing the effects of education when the equipment are used in the education.

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Radiological Science Curriculum on the Digital Radiology Environments : Problems and Suggestions (디지털 방사선 환경에서의 방사선학과의 교육과정에 대한 현황과 개선 방향)

  • Kim, Chang-Soo;Kim, Hwa-Gon
    • Journal of radiological science and technology
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    • v.28 no.2
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    • pp.129-135
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    • 2005
  • IT communication industries of current society are developed in enormous growth, our country leading the world in the number of super high speed internet equipments in use. In the pride oneself on communication network of those, mobile terminal technology and wireless phone production hold a high rank. Data communication and networking may be the fastest growing technologies in our culture today. In this way, IT fields conjugated in the daily quick, the fact that department of radiological science didn't discharged one's duties on current IT education. The curriculum of radiological technologists that play an important part between skill and occupation's education as major and personality didn't performed one's part most effectively on current IT environments and digital radiological equipments interface. Therefore, in this paper current curriculum of radiological science are catched hold of trend and problems on digital radiology environments, on fact the present state of problems, for radiological engineering and HIS manager, new curriculum course are suggested a reform measure of culture and major education curriculum introduction.

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Education Equipment and Its Application for Indoor Position Recognition Using Inertial Measurement Unit Sensor (IMU센서를 이용한 실내 위치 인식 교육용 장비 및 응용)

  • Seo, Bo-In;Yu, YunSeop
    • Journal of Practical Engineering Education
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    • v.10 no.2
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    • pp.119-124
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    • 2018
  • Educational equipment that enables the user or device to recognize the indoor position by using the acceleration and angular velocity of the IMU (Inertial Measurement Unit) sensor is introduced. With this educational equipment, various position recognition and tracking algorithms can be learned and creative engineering design works can be realized. The data value of the IMU sensor is transmitted to the MCU (microcontroller unit) through $I^2C$ (Inter-Integrated Circuit), and the indoor position recognition algorithm is applied by processing the data value through the filter and numerical method. It is then designed to use wireless communication to send and receive processed values and to be recognized by the user. As an example using this equipament, the case of "Implementation and recognition of virtual position using computation of moving direction and distance using IMU sensor" is introduced, and various creative engineering design application is discussed.

A study on automated speed enforcement system algorithm for using image processing (영상처리를 이용한 과속단속 알고리즘 연구)

  • Park, Geon-Yeong;Jeon, Min-ho;Oh, Chang-heon
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • pp.833-836
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    • 2013
  • In this paper, we proposed an intelligent surveillance system which can be determined by the overspeed of vehicle which continuously collects by video imaging device. Imaging device to capture images continuously, and filtering errors that occur as a natural, long-distance moving objects by comparing the images collected before and after the images. To measure the size of things, it proves that able to measure speed of the vehicle, depending on the amount of growing pixels using the pixel processing.

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Design and Implementation of a Remote Image Monitoring System using Mobile Terminal (이동 단말기를 이용한 원격 영상 감시시스템의 설계 및 구현)

  • Shin, Won;Chung, Koo-Hi;Kim, Tae-Wan;Chang, Chun-Hyon
    • Proceedings of the Korea Information Processing Society Conference
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    • pp.995-998
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    • 2003
  • 인터넷 정보가전 제품의 보급과 편리한 서비스를 요구하는 사용자의 욕구증대로 인하여 홈 오토메이션이라는 기술이 대두 되었다. 초기의 홈 오토메이션은 셋톱박스, CCTV와 같은 장비들이 요구 되어 가정, 사무실과 같은 소규모 공간에서의 도입이 어렵다. 이러한 문제점을 해결하기 위해 언제 어디서나 영상 감시와 제어를 할 수 있고 별도의 장비 없이 소규모 공간에서도 손쉽게 적용 시킬 수 있는 홈 오토메이션 시스템이 요구된다. 홈 오토메이션 시스템의 구현을 위해서는 기반기술인 영상 감시와 제어기술이 구현되어야한다. 본 논문에서는 홈 오토메이션의 기반 기술인 영상 감시기술 구현을 위해 원격 영상 감시 시스템을 설계 및 구현 하였다. 원격 영상 감시 시스템은 클라이언트에서 선택한 웹카메라의 동화상 캡쳐시 버퍼링을 중지함으로써 영상지연을 최소화하였으며, 카메라 선택 모듈의 사용으로 모든 영상이 아닌 선택된 영상만을 전송함으로써 자원 소모를 줄였다. 이러한 원격 영상 감시 시스템은 전력 감시 시스템, 분산 제어 시스템 등의 산업분야 뿐만 아니라 교육 분야 등 여러 분야에서 사용될 수 있다.

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Technical Trends of Projection-based Augmented Reality (프로젝션 기반 증강현실 기술동향)

  • Heo, G.S.;Lee, D.W.;Jeong, H.T.;Park, J.S.
    • Electronics and Telecommunications Trends
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    • v.26 no.5
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    • pp.92-101
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    • 2011
  • 최근 3D 및 증강현실 기술이 발전함에 따라 사용자는 특수한 장비를 착용하지 않고서도 주변의 다양한 서비스 및 콘텐츠가 현실 세계와 결합되어 디스플레이 되며, 손의 감각과 인식에 따라 직접 상호작용하는 것을 요구한다. 이에 따라 기존 see-through HMD(Head Mounted Display)나 모니터 화면을 벗어나 실세계의 객체에 직접 증강된 현실을 보여주고 체험할 수 있는 프로젝션 기반 증강현실 기술의 중요성이 증대되고 있다. 본 고에서는 프로젝션 기반 증강현실을 구현하기 위한 출력보정, 추적 및 정합, 상호작용 및 사용자 인터페이스 기술에 대한 동향을 살펴본다. 더불어 산업, 의료, 교육 및 엔터테인먼트, 모바일 응용 등 각 분야에서 활용되고 있는 최근의 프로젝션 기반 증강현실 기술동향을 소개한다.

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A Cell-Based Mobility Model for Mobile Ad-hoc Networks (모바일 애드 혹 네트워크에서 셀 구조에 기반 한 이동성 모델)

  • Kim, Backhyun;Park, Kyeongmo
    • 한국정보기술학회논문지
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    • v.15 no.2
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    • pp.69-77
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    • 2017
  • Mobile ad-hoc network is the self-configuring network that mobile nodes conduct the entire process to offer the requested service by themselves without any preinstalled communication device. The free movement of mobile node can cause the frequent change of the transmission route and QoS(Quality of Service). Therefore, there are many demands to a mobility model to effectively evaluate network performance. However, most mobility models have features such as directivity and centralization. This paper proposes a new mobility model based on the logically configured hexagonal cell structure for lower directivity and centralization. We perform comparison experiments in the view of the number of hops, the frequency of a route change as the function of the network area and node speed with existing mobility models: Random Walk, Random Waypoint, Random Direction. Form the experimental results, we prove that our mobility model has better performance substantially than other mobility models.

A Study on the security method for Smart Work (스마트워크 보안 방안에 대한 연구)

  • Kim, Tae-Kyung;Seo, Hee-Suk;Lee, Dong-Young
    • Proceedings of the Korea Information Processing Society Conference
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    • pp.931-933
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    • 2011
  • 스마트 장비의 발달로 장소와 환경에 상관없이 자유롭게 일을 할 수 있는 스마트워크가 중요한 이슈로 부각되고 있다. 이에 본 연구에서는 스마트워크의 개념 및 해외 동향을 살펴보고, 스마트워크가 활성화되기 위해 필요한 보안 방안에 대한 주요한 요건들에 대해서 살펴보았다. 스마트워크에서 안전성이 확보된다면 저 탄소 녹색성장을 포함하여 사회의 저 출산 고령화, 낮은 노동 생산성 등 당면 현안을 해결하는 방안으로 스마트워크가 유용하게 사용될 수 있다.

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Universal and Can be Applied Wireless Channel Assignment Algorithm (범용 적용이 가능한 무선채널할당알고리즘)

  • Heo, Seo-Jung;Son, Dong-Cheul;Kim, Chang-Suk
    • Journal of Digital Convergence
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    • v.10 no.9
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    • pp.375-381
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    • 2012
  • If a mobile station requests a channel allocation in its mobile networks, the switching center assigns a channel to a mobile station that belongs to each base station. There are three kinds of channel allocation schemes; a fixed channel allocation, a dynamic channel allocation and a hybrid combination of these two forms. In assigning a good frequency, it is our intention to provide quality service to our customers as well as to use resources efficiently. This paper proposes methods of assigning frequencies that minimize interference between channels and that also minimize the amount of searching time involved. In this paper, we propose an algorithm to per specific equipment, regardless of the number of channels that can be used as a general-purpose system, such as base stations, control stations, central office model is proposed, the existing operators manner similar to the fixed channel allocation based statistics and assigned when the conventional method and the improved method is proposed. Different ways and compared via simulations to verify the effectiveness of the proposed approach.

Location Management & Message Delivery Protocol for Multi-region Mobile Agents in Multi-region Environment (다중 지역 환경에서 이동 에이전트를 위한 위치 관리 및 메시지 전달 기법)

  • Choi, Sung-Jin;Baik, Maeng-Soon;Song, Ui-Sung;Hwang, Chong-Sun
    • Journal of KIISE:Computer Systems and Theory
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    • v.34 no.11
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    • pp.545-561
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    • 2007
  • Location management and message delivery protocol is fundamental to the further development of mobile agent systems in a multi-region mobile agent computing environment in order to control mobile agents and guarantee message delivery between them. However, previous works have some problems when they are applied to a multi-region mobile agent computing environment. First, the cost of location management and message delivery is increased relatively. Second, a tracking problem arises. finally, cloned mobile agents and parent-child mobile agents do not get dealt with respect to location management and message delivery. In this paper, we present a HB (Home-Blackboard) protocol, which is a new location management and message delivery protocol in a multi-region mobile agent computing environment. The HB protocol places a region server in each region and manages the location of mobile agents by using intra-region migration and inter-region migration. It also places a blackboard in each region server and delivers messages to mobile agents when a region server receives location update form them. The HB protocol can decrease the cost of location update and message passing and solve the tracking problem with low communication cost. Also, this protocol deals with the location management and message passing of cloned mobile agents and parent-child mobile agents, so that it can guarantee message delivery of these mobile agents and pass messages without passing duplicate messages.