• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.203-213
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• 2009

Medicine is one of great application fields where Virtual Reality (VR) technologies have been successfully utilized. The VR technologies in medicine bring together an interdisciplinary community of computer scientists and engineers, physicians and surgeon, medical educator and students, military medical specialists, and biomedical futurists. The primary feedback of a VR system has been visual feedback. The complex geometry for graphic objects and utilizing hardware acceleration can be incorporated with in order to produce realistic virtual environments. To enhance human-computer interaction (HCI), in term of immersive experiences perceived by users, haptic, speech, olfactory and other non-traditional interfaces should also be exploited. Among those, hapic feedback has been tightly coupled with visual feedback. The combination of the two sensory feedbacks can give users more immersive, realistic and perceptive VR environments. Haptic feedback has been studied over decades and many haptic based VR systems have been developed. This paper focuses on haptic feedback in term of its medical usages. It presents a survey of haptic feedback techniques with their applications in medicine.

• 한국어정보학회:학술대회논문집
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• 2016.10a
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• pp.181-185
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• 2016

최근 교육과정에서 학생들의 능력 평가는 단순 암기보다 학생들의 종합적인 사고력을 판단할 수 있는 서답형 문항을 늘리는 방향으로 변하고 있다. 그러나 서답형 문항의 경우 채점하는 데 시간과 비용이 많이 들고, 채점자의 주관에 따라 채점 결과의 일관성과 신뢰성을 보장하기 어렵다는 문제가 있다. 이런 점을 해결하기 위해 해외의 사례를 참고하여 국내에서도 서답형 문항에 자동채점 시스템을 적용하는 연구를 진행하고 있다. 본 논문에서는 2014년도에 개발된 '한국어 문장 수준 서답형 문항 자동채점 시스템'의 성능분석을 바탕으로 언어 처리 기능과 자동채점 성능을 개선한 2015년도 자동채점 시스템을 간략하게 소개하고, 각 자동채점 시스템의 성능을 비교 분석한다. 성능 분석 대상으로는 2014년도 국가수준 학업성취도평가의 서답형 문항을 사용했다. 실험 결과, 개선한 시스템의 평균 완전 일치도와 평균 정확률이 기존의 시스템보다 각각 9.4%p, 8.9%p 증가했다. 자동채점 시스템의 목적은 가능한 채점 시간을 단축하면서 채점 기준의 일관성과 신뢰성을 확보하는 데 있으므로, 보완한 2015년 자동채점 시스템의 성능이 향상되었다고 판단할 수 있다.

• The Journal of the Korea Contents Association
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• v.10 no.7
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• pp.470-480
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• 2010

Although e-Learning contents contain audio materials as well as visual materials, research on the design of audio materials has been focused on visual design. If it is considered that non-speech sounds which are a type of audio materials can promptly provide feedbacks of learners' responses and guide learners' learning process, the systemic design of non-speech sounds is needed. Therefore, the purpose of this study is to investigate the learners' perceptions toward non-speech sounds contained the e-Learning contents with multidimensional scaling method. For this purpose, the eleven non-speech sounds were selected among non-speech sounds designed Korea Open Courseware. The 66 juniors in A university responded the degree of similarity among 11 non-speech sounds and the learners' perceptions towards non-speech sounds were represented in the multidimensional space. The result shows that learners perceive separately non-speech sounds by the length of non-speech sounds and the atmosphere which is positive or negative.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.05a
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• pp.374-376
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• 2018

In this study, we developed a mobile home robot using a face recognition method using a camera attached to a raspberry pie. It receives the real time image through the camera attached to the raspberry pie, recognizes the face of the person, and distinguishes the operation of the smart cool air temperature device according to the result. It is expected that the robot will be able to increase the energy utilization efficiency by allowing the robot to operate in cold and hot winds only where there is no human being, instead of operating the hot and cold air conditioner.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.05a
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• pp.377-379
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• 2018

In recent years, with the focus on the younger generation, a minimal life that pursues a simple and light life has attracted attention, and a product that occupies a small space and has high practicality attracts attention. Therefore, a lot of studies on small but realistic products are going on by combining plural products into one. In this study, we developed a smart stand that can save space on the desk. The stand is equipped with a smartphone holder, humidifier, negative ion generator, and speaker functions. Because of this study, it is expected that the efficiency of space and economy will be improved in a small house of one person.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.05a
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• pp.380-382
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• 2018

In this study, we developed software for portable lifter using Android application for stability of portable lifter which can load freight easily. Arduino Uno R3 boards were used for this purpose. The existing portable lifts were disassembled to mount the Arduino Uno R3 board and circuit, and to send and receive signals via Bluetooth communication. This study can be expected to contribute greatly to the safety work of logistics activities.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.05a
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• pp.371-373
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• 2018

The function of the direction indicator is essential for the safety of bicycle trips and commuters. In this study, the direction indicator function was developed on the prefabricated bicycle using the Arduino. With the simple function of the Arduino, you can attach a switch to the handle to turn the direction indicator on and off. Since it is a simple function, it is judged that it is suitable for the maker activity that can make it by DIY by oneself having a bicycle. In this paper, we have opened the possibility of attaching a lot of services to bicycles through the proposed functions.

• Proceedings of the Korea Society of Information Technology Applications Conference
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• 2002.11a
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• pp.249-268
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• 2002

최근 ERP 시스템이 기업의 전략적 도구로 인식되어지면서, 대기업뿐만 아니라 중소기업에서도 이에 대한 관심이 확산되고 있다. 이러한 경영환경의 변화로 ERP 시스템 도입에 대한 최고경영자 및 일반직원들의 인식이 이전에 비해 높아지고는 있지만, 사실상 인식만 있을 뿐 이에 대한 실제적인 실천전략이 미흡한 실정이다. 이는 중소기업에서 ERP 시스템 구축을 위해서는 수개월 또는 수년간에 걸쳐서 기업의 많은 자원이 투입돼야하기 때문으로 중소기업이 이를 극복하고 성공적인 ERP 시스템을 구축하기 위해서는 중소기업 환경에 적합한 ERP시스템 구축방안이 마련되어야 할 것이다. 따라서 본 논문에서는 기존에 선행 연구된 연구자료를 비교ㆍ분석하여 중소기업의 특성에 적합한 ERP 시스템 구축 성공요인과 구축전략을 도출하였다. 주요성공요인으로는 교육훈련, 명확한 도입목표 설정, 적합한 패키지 선정, 최고경영진의 참여, 그리고 현업사용자의 참여가 높은 빈도율을 나타냈다. ERP 시스템 구축방법론은 준비단계, 분석단계, 구축단계, 구현단계, 종료단계의 다섯 단계로 나눠볼 수 있으며 각각의 수행단계별로 Activity가 정의되고 이에 대한 산출물이 발생하게 된다. 또한 ERP 도입시 소프트웨어의 자체개발보다는 패키지 도입이, 그리고 이의 접근방법으로는 선정된 모듈을 일괄적으로 적용하는 Big-Bang방식이 중소기업 실정에 더 합리적이며, 구현시기에 있어서는 Big-Bang방식과 더불어 기존업무에 ERP 시스템을 구현함으로써 ERP 시스템이 제공하는 기능과 함께 BPR의 효과도 얻는 방법이 가장 적합할 것으로 사료된다. 끝으로 본 논문에서는 ERP 시스템 도입의사가 있어도 기업환경 여건이 따라주지 않아 실천에 옮기지 못하는 중소기업을 고려하여 도입지원방안으로써 산ㆍ학 연계모델을 제시하였다. 중소기업은 ERP 시스템 도입에 필요한 인적ㆍ물적 자원을 대학으로부터 얻음으로써 자체 내 보유능력의 한계를 극복하고, 대학은 현장실습을 통해 풍부한 경험을 쌓음으로써 우수 인력 양성에 기여할 수 있을 것이다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.05a
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• pp.662-665
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• 2013

ITS(Intelligent Tutoring System) is a system that provides active and flexible tutoring conditions to learners, having adopted artificial intelligence to overcome the limitations of CAI(Computer Assisted Instruction). However, the existing ITS has a few problems; the system provides the same contents to every learner, not considering main variants of their learning and achievement, characters and levels, and therefore, it does not generate satisfactory results; the system does not offer a properly designed course schedule. Therefore, this thesis proposes ARS(Adaptive Recommendation System), founded on ITS, that provides contents designed based on the characters and levels of learners. To catch the characters of learners, the important variant for successful learning, ARS applies and embodies a module of self-assessment test. Also, it puts weighs according to the areas of learning which is different from the simplified assessment that asks for short and mechanical answers for the purpose of knowing the levels of the learners.

• Journal of the Korean Society for information Management
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• v.23 no.4 s.62
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• pp.233-256
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• 2006

To understand the use of the ebooks among undergraduate students, a questionnaire was devised and collected data from 466 respondents. The level of ebook and its service awareness appears to be low, and only about 30% of the students have used ebooks in the past. Students access ebooks primarily through the library homepage. 73% of the users read 3 ebooks and below. The subject and area of reading is fairly spread, however literary works and genre fiction were most popular And the purpose is split into academic and private reading. Most of the users lack of knowledge about additional functions. Overall satisfaction level is low. Discomfort and ebooks illiteracy constitute the major reasons of nonuse, however about 88% of the nonusers show willingness to use in the future. According to the interview, active users are familiar with the screen reading as well as perceived advantages of ebooks. Nontheless, their satisfaction level is still low. Based on the results, recommendations for creating awareness, education, production development and service evaluation are suggested to promote the ebooks use.