• 제목/요약/키워드: computer-based integrated multimedia

검색결과 82건 처리시간 0.021초

에너지 하베스팅 및 모니터링 기반의 고로쇠 수액 통합 관리 시스템 구현 (A Implementation of Acer Pictum Sap Integrated Management System based on Energy Harvesting and Monitoring System)

  • 정세훈;조경호;김준영;박준;김종찬;최수임;심춘보
    • 한국멀티미디어학회논문지
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    • 제22권11호
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    • pp.1324-1337
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    • 2019
  • This study set out to investigate an energy harvesting device to ensure stable energy supply to batteries and data collection devices and a monitoring system for acer pictum sap to check collected data. Acer pictum sap farmers have written down weather information and yield of acer pictum sap manually for data storage. Since the job is done manually, there are many missing values in their data. In addition, it is not easy to manage batteries due to the characteristics of the areas where acer pictum sap is collected. The present study thus decided to build an energy harvesting device based on new renewable energy to ensure stable energy supply by taking into consideration power load, daily power consumption, and number of days with no sunshine for various devices. For a monitoring system, the investigator proposed a JSP-based web page to monitor temperature, humidity, volume of collected water, and battery state in real time. The proposed energy harvesting device was applied to reduce missing values in data. It promoted stable energy supply to the batteries and data collection devices, reducing the percentage of missing values in data from 30.55% to 0%.

리눅스 기반의 IEEE1394 통신 시험을 위한 시험 환경 구축 (An Implementation of Test Bed for Linux based IEEE 1394 communication test)

  • 이재길
    • 한국컴퓨터정보학회논문지
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    • 제8권3호
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    • pp.9-15
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    • 2003
  • IEEE1394 표준은 등시성 전송과 비동기 전송을 지원하여 PC와 정보가전기기들 사이의 고속 멀티미디어데이터 송수신을 가능하게 한다. 본 논문은 리눅스 환경에서 IEEE1394 의 통신 시험 환경 구축에 대해 기술한다. 이 논문에서의 주된 내용은 IEEE 1394 통신 환경을 시험하기 위한 통합 소프트웨어 개발이다. 이 소프트웨어를 개발하기 위해 기존의 Linux 환경에서 개발되어 공표된 각 기능별 소프트웨어(gscanbus,dvgrab, playdv, Xine, Kino)들을 조사하고 이것들을 통합하여 통합 소프트웨어를 개발하였다. 또한 개발된 통합 소프트웨어를 이용하여 장비간의 통신, 비동기 전송, 동기 전송 등의 시험 항목을 성공적으로 수행하였다. 본 논문에서 개발된 통합 소프트웨어를 이용하여 리눅스 기반에서 IEEE1394통신 시험에 관련된 작업을 효과적으로 처리할 수 있을 것으로 기대되며 필요시 다소간의 프로그램 변경으로 새로운 기능 추가나 새로운 응용에 활용될 수 있을 것이다.

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효율적인 영상데이터 처리를 위한 SIMD기반 매니코어 프로세서 구현 (Implementation of SIMD-based Many-Core Processor for Efficient Image Data Processing)

  • 최병국;김철홍;김종면
    • 한국컴퓨터정보학회논문지
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    • 제16권1호
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    • pp.1-9
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    • 2011
  • 최근 모바일 멀티미디어 기기들의 사용이 증가하면서 고성능, 저전력 멀티미디어 프로세서에 대한 필요성이 높아지고 있는 추세이다. 주문형반도체 (ASIC)는 모바일 멀티미디어에서 요구되는 고성능을 만족시키지만 다양한 형태의 멀티미디어 애플리케이션에서 요구되는 범용성을 만족시키지 못한다. 반면 DSP기반의 시스템은 범용성에 기인하여 다양한 형태의 애플리케이션에서 사용될 수 있으나, 주문형반도체 보다 높은 가격, 전력소모 및 낮은 성능을 가진다. 이러한 문제점을 해결하기 위해 본 논문에서는 범용성을 유지하면서 고성능, 저전력으로 영상데이터 처리가 가능한 단일 명령어 다중 데이터(Single Instruction Multiple Data, SIMD)처리 방식의 매니코어 프로세서를 제안한다. 제안한 SIMD기반 매니코어 프로세서는 16개의 프로세싱 엘리먼트(processing element, PE)로 구성되어 영상데이터 처리에 내재한 무수한 데이터 레벨 병렬성을 높인다. 모의 실험한 결과, 제안한 SIMD기반 매니코어 프로세서는 현재 상용 고성능 프로세서보다 평균 22배의 성능, 7배의 에너지 효율 및 3배의 시스템 면적 효율을 보였다.

전산유체역학을 이용한 실시간 유체 애니메이션 기술 (Real-time Flow Animation Techniques Using Computational Fluid Dynamics)

  • 강문구
    • 한국가시화정보학회지
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    • 제2권2호
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    • pp.8-15
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    • 2004
  • With all the recent progresses in computer hardware and software technology, the animation of fluids in real-time is still among the most challenging issues of computer graphics. The fluid animation is carried out in two steps - the physical simulation of fluids immediately followed by the visual rendering. The physical simulation is usually accomplished by numerical methods utilizing the particle dynamics equations as well as the fluid mechanics based on the Navier-Stokes equations. Particle dynamics method is usually fast in calculation, but the resulting fluid motion is conditionally unrealistic. The methods using Navier-Stokes equation, on the contrary, yield lifelike fluid motion when properly conditioned, yet the complexity of calculation restrains this method from being used in real-time applications. This article presents a rapid fluid animation method by using the continuum-based fluid mechanics and the enhanced particle dynamics equations. For real-time rendering, pre-integrated volume rendering technique was employed. The proposed method can create realistic fluid effects that can interact with the viewer in action, to be used in computer games, performances, installation arts, virtual reality and many similar multimedia applications.

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안전기준의 검색과 분석을 위한 기계독해 기반 질의응답 시스템 (Machine Reading Comprehension-based Question and Answering System for Search and Analysis of Safety Standards)

  • 김민호;조상현;박덕근;권혁철
    • 한국멀티미디어학회논문지
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    • 제23권2호
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    • pp.351-360
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    • 2020
  • If various unreasonable safety standards are preemptively and effectively readjusted, the risk of accidents can be reduced. In this paper, we proposed a machine reading comprehension-based safety standard Q&A system to secure supporting technology for effective search and analysis of safety standards for integrated and systematic management of safety standards. The proposed model finds documents related to safety standard questions in the various laws and regulations, and then divides these documents into provisions. Only those provisions that are likely to contain the answer to the question are selected, and then the BERT-based machine reading comprehension model is used to find answers to questions related to safety standards. When the proposed safety standard Q&A system is applied to KorQuAD dataset, the performance of EM 40.42% and F1 55.34% are shown.

창의성 향상을 위한 아두이노 활용 교육과정 개발과 분석 (A Study on Training Courses Development and Analysis for Improving the Creativity using Arduino)

  • 심주은;고주영;심재창
    • 한국멀티미디어학회논문지
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    • 제17권4호
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    • pp.514-525
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    • 2014
  • We have performed a short-term computer information and communication technology education using Arduino. The purpose of this education was to progress basic training interestingly and discover excellent students. Training was about practicing basic examples about H/W, S/W, communication, and solving creative tasks. We divided training participants into a team composed of each 3 members and educated them for 10 hours. Instructors were consists of 1 main teacher and 3 teacher assistants. Training was about assembling Arduino based robot, blinking LED, operating speaker, serial communication, producing software for wireless communications and autonomous of robot, and control hardware of robot. Through this study, we developed a meaningful ICT integrated curriculum which has high usefulness in a short period. Students participated in this education completed 96% out of 10 creative tasks, and this study analyzes the result of curriculum and suggests further research directions.

SMIL을 기반으로 한 멀티미디어 네트워크 교육시스템 (Multimedia Network Teaching System based on SMIL)

  • 우뢰;조극양;방진숙;조태범;정회경
    • 한국정보통신학회:학술대회논문집
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    • 한국해양정보통신학회 2008년도 추계종합학술대회 B
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    • pp.524-527
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    • 2008
  • 최근 디지털 및 인터넷이 보편화되고, 멀티미디어 처리 기술과 정보통신 기술이 발달함에 따라 인터넷을 이용한 교육의 수요는 급격히 증가하고 있다. 또한 다양한 멀티미디어 정보를 보다 자유롭게, 시간과 공간의 제약을 받지 않으면서 이용할 수 있게 되었다. 그러나 여러 종류의 오디오, 미디어와 같은 멀티미디어 데이터를 통합하여 표현하기 위한 요구가 확산되었다. 이에 따라 1998년 W3C에서 XML(eXtensible Markup Language)에 기반을 둔 SMIL(Synchronized Multimedia Integration Language)을 제안하였다. 이러한 멀티미디어 요소가 통합된 SMIL 문서는 플레이어를 통해 네트워크 교육 학습자와 상호 작용하는 멀티미디어 콘텐츠로서 단순히 오디오만 전달하는 인터넷 라디오 방송에 다양한 멀티미디어 요소를 추가하여 보다 많은 정보를 전달하며, 이를 통해 학습자 중심의 새로운 인터넷 라디오 방송 서비스를 창출할 수 있는 가능성이 마련되었다. 이에, 본 논문에서 제안한 시스템은 교사가 쉽게 멀티미디어 정보를 만들어 수업에 활용 할 수 있도록 한다. 학생들은 교사가 수업하는 오디오, 비디오 등 정보를 동시에 시청각할 수 있다. 그리고 채팅창을 통해서 문자로 실시간 교류할 수 있다. 또한, 수업 후에 학생들은 언제나 수업의 내용을 자율적으로 요청하고 볼 수 있다.

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Why A Multimedia Approach to English Education\ulcorner

  • Keem, Sung-uk
    • 대한음성학회:학술대회논문집
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    • 대한음성학회 1997년도 7월 학술대회지
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    • pp.176-178
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    • 1997
  • To make a long story short I made up my mind to experiment with a multimedia approach to my classroom presentations two years ago because my ways of giving instructions bored the pants off me as well as my students. My favorite ways used to be sometimes referred to as classical or traditional ones, heavily dependent on the three elements: teacher's mouth, books, and chalk. Some call it the 'MBC method'. To top it off, I tried audio-visuals such as tape recorders, cassette players, VTR, pictures, and you name it, that could help improve my teaching method. And yet I have been unhappy about the results by a trial and error approach. I was determined to look for a better way that would ensure my satisfaction in the first place. What really turned me on was a multimedia CD ROM title, ELLIS (English Language Learning Instructional Systems) developed by Dr. Frank Otto. This is an integrated system of learning English based on advanced computer technology. Inspired by the utility and potential of such a multimedia system for regular classroom or lab instructions, I designed a simple but practical multimedia language learning laboratory in 1994 for the first time in Korea(perhaps for the first time in the world). It was high time that the conventional type of language laboratory(audio-passive) at Hahnnam be replaced because of wear and tear. Prior to this development, in 1991, I put a first CALL(Computer Assisted Language Learning) laboratory equipped with 35 personal computers(286), where students were encouraged to practise English typing, word processing and study English grammar, English vocabulary, and English composition. The first multimedia language learning laboratory was composed of 1) a multimedia personal computer(486DX2 then, now 586), 2) VGA multipliers that enable simultaneous viewing of the screen at control of the instructor, 3) an amplifIer, 4) loud speakers, 5)student monitors, 6) student tables to seat three students(a monitor for two students is more realistic, though), 7) student chairs, 8) an instructor table, and 9) cables. It was augmented later with an Internet hookup. The beauty of this type of multimedia language learning laboratory is the economy of furnishing and maintaining it. There is no need of darkening the facilities, which is a must when an LCD/beam projector is preferred in the laboratory. It is headset free, which proved to make students exasperated when worn more than- twenty minutes. In the previous semester I taught three different subjects: Freshman English Lab, English Phonetics, and Listening Comprehension Intermediate. I used CD ROM titles like ELLIS, Master Pronunciation, English Tripple Play Plus, English Arcade, Living Books, Q-Steps, English Discoveries, Compton's Encyclopedia. On the other hand, I managed to put all teaching materials into PowerPoint, where letters, photo, graphic, animation, audio, and video files are orderly stored in terms of slides. It takes time for me to prepare my teaching materials via PowerPoint, but it is a wonderful tool for the sake of presentations. And it is worth trying as long as I can entertain my students in such a way. Once everything is put into the computer, I feel relaxed and a bit excited watching my students enjoy my presentations. It appears to be great fun for students because they have never experienced this type of instruction. This is how I freed myself from having to manipulate a cassette tape player, VTR, and write on the board. The student monitors in front of them seem to help them concentrate on what they see, combined with what they hear. All I have to do is to simply click a mouse to give presentations and explanations, when necessary. I use a remote mouse, which prevents me from sitting at the instructor table. Instead, I can walk around in the room and enjoy freer interactions with students. Using this instrument, I can also have my students participate in the presentation. In particular, I invite my students to manipulate the computer using the remote mouse from the student's seat not from the instructor's seat. Every student appears to be fascinated with my multimedia approach to English teaching because of its unique nature as a new teaching tool as we face the 21st century. They all agree that the multimedia way is an interesting and fascinating way of learning to satisfy their needs. Above all, it helps lighten their drudgery in the classroom. They feel other subjects taught by other teachers should be treated in the same fashion. A multimedia approach to education is impossible without the advent of hi-tech computers, of which multi functions are integrated into a unified system, i.e., a personal computer. If you have computer-phobia, make quick friends with it; the sooner, the better. It can be a wonderful assistant to you. It is the Internet that I pay close attention to in conjunction with the multimedia approach to English education. Via e-mail system, I encourage my students to write to me in English. I encourage them to enjoy chatting with people all over the world. I also encourage them to visit the sites where they offer study courses in English conversation, vocabulary, idiomatic expressions, reading, and writing. I help them search any subject they want to via World Wide Web. Some day in the near future it will be the hub of learning for everybody. It will eventually free students from books, teachers, libraries, classrooms, and boredom. I will keep exploring better ways to give satisfying instructions to my students who deserve my entertainment.

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Automation of Architectural Design Process and Robotic System in Building Construction using Object-Oriented Design

  • Choo, Seung-Yeon;Park, Sang-Min
    • 한국멀티미디어학회논문지
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    • 제12권12호
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    • pp.1787-1795
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    • 2009
  • This paper describes an automation of architectural design processes and the direction between this automation and robotic system in building construction using the concept of the object-oriented design in architecture. The research starts from the premise that many computer-aided design systems are mostly aimed at serving as drawing tools which are used only after a design formal solution has already been established by the architect. If the computer is well applied to the architectural design process, many positive things such as standardization of design detail, increasing productivity and collaboration, minimizing construction costs etc. can be done. To support an early design solution in the computer-based environment, the proposed automation was developed and tested in a real building project, using the object-oriented design concept such as product model. This design automation gives various design alternatives from the early design phase to the final stage of design details, according to musical harmony. This paper shows how architectural design process can be automated and how the data of the applied architectural design can be integrated into product model environment, in relation to robotic system in building construction.

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마이크로인버터를 적용한 태양광 발전시스템 노후예측판단에 관한 연구 (Study on the Obsolescence Forecasting Judgment of PV Systems adapted Micro-inverters)

  • 박찬곤
    • 한국멀티미디어학회논문지
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    • 제18권7호
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    • pp.864-872
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    • 2015
  • The purpose of this study is to design the algorithm, Predictive Service Component - PSC, for forecasting and judging obsolescence of solar system that is implemented based on the micro-inverter. PSC proposed in this study is suitable for monitoring of distributed power generation systems. It provides a diagnosis functionality to detect failures and anomaly events. It also can determine the aging of PV systems. The conclusion of this study shows the research and development of this kind of integrated system using PSC will be needed more and varied in the near future.