• Restorative Dentistry and Endodontics
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• 제39권3호
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• pp.195-200
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• 2014

Objectives: To comparatively evaluate the efficacy of photo-activated disinfection (PAD), calcium hydroxide (CH) and their combination on the treatment outcome of indirect pulp treatment (IPT). Materials and Methods: Institutional ethical clearance and informed consent of the patients were taken. The study was also registered with clinical registry of India. Sixty permanent molars exhibiting deep occlusal carious lesion in patients with the age range of 18 - 22 yr were included. Clinical and radiographic evaluation and set inclusion and exclusion criteria's were followed. Gross caries excavation was accomplished. In group I (n = 20) PAD was applied for sixty seconds. In group II (n = 20), CH was applied to the remaining carious dentin, while in group III (n = 20), PAD application was followed by CH placement. The teeth were permanently restored. They were clinically and radiographically followed-up at 45 day, 6 mon and 12 mon. Relative density of the remaining affected dentin was measured by 'Radiovisiography (RVG) densitometric' analysis. Results: Successful outcome with an increase in radiographic grey values were observed in all three groups. However, on inter-group comparison, this change was not significant (p > 0.05). Conclusions: PAD and CH both have equal disinfection efficacy in the treatment of deep carious dentin. PAD alone is as effective for treatment of deep carious lesion as calcium hydroxide and hence can be used as an alternative to CH. They can be used independently in IPT, since combining both does not offer any additional therapeutic benefits.

• 만화애니메이션 연구
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• 통권30호
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• pp.221-243
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• 2013

전통적인 인쇄매체의 종이책이 최근 디지털 기술의 발달로 인해 스마트기기에서도 전자책이라는 매체로도 확장 되고 있다. 특히 애플리케이션(Application) 형태의 콘텐츠로 제공되는 앱북(App Book)은 책이 가지고 있는 기본적인 정보제공과 교육, 감성전달 목적 이외에 멀티미디어 기술을 활용한 재미 요소를 부가하여 몰입도를 배가 시키고 체험적 효과를 증가시키고 있다. 기존에 이미 검증받은 고퀄리티 콘텐츠를 애플리케이션 매체로 전환하는데 있어서 그 효과를 높이기 위해 다양한 시도들이 이루어지고 있다. 본 논문은 앱북으로의 매체 전환에 있어서 디지털 기술과 재미 요소가 융합된 퍼놀로지(Funology)가 어떻게 활용되고 사용자에게 어떠한 효과를 제공하는지에 대해 사례를 분석하여 앞으로의 앱북 콘텐츠 개발에 가이드를 제공하고 활용될 수 있도록 하고자 한다. 본 논문에서는 첫째, 문헌조사를 통해 퍼놀로지에 대한 개념과 요소들을 살펴보고 분석할 수 있는 기준의 토대를 마련한다. 둘째, 원작 '무, 바, 라라라!(Moo, Baa, La La La!)' 그림책을 아이패드(iPad)용 애플리케이션으로 전환한 앱북을 선정하여 퍼놀로지 요소에 따라 분석하였다. 셋째, 분석한 요소들이 실제로 인쇄매체의 종이책과 비교하여 퍼놀로지의 활용과 효과를 확인하기 위해 심층인터뷰인 FGI(Focus Group Interview)를 실행하였다. 그 결과 사운드를 활용한 감각적 퍼놀로지에 대한 감성적 효과가 높았으며 즉각적이고 직관적인 모션과 변화에 따른 인터랙션에 의한 퍼놀로지 요소를 선호하고 있었다. 또한 기존의 오리지널 책에서 강조되던 유희 자체를 위한 퍼놀로지 요소는 다른 관점에서의 즐거운 감성으로 유도하고 있어 책의 콘텐츠 내용과 정보 보다는 게임적 성향의 인터랙션 자체에 더욱 치중되어 체험하고 있음을 알 수 있었다. 이러한 분석과 인터뷰 결과는 지속적으로 개발되고 있는 앱북 개발에 있어서 본래 책이라는 매체가 가지고 있는 콘텐츠의 장점을 살리면서 애플리케이션의 퍼놀로지 요소의 특징을 부각시킬 수 있는 매체전환 방법에 대한 활용 가능성을 기대해 본다.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2011년도 춘계학술발표대회
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• pp.40-42
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• 2011

Smart hand-held devices like iPhone, iPad, Andriod and other mobile-OS machines are becoming a well known part of our daily lives. Utilization of these devices has gone beyond the expectations of their inventors. Evolution of Apple's iOS from a mobile phone Operating System to a wholesome platform for Portable Gaming is an adequate proof. Using these smart devices people are downloading applications from numerous online App Stores. Utilizing remote storage facilities and confining themselves to computing power far below than an entry level laptop, netbooks have emerged. Google's idea of Chrome OS coupled with Google's AppEngine is an eye-opener for researchers and developers. Keeping all these industry-proven innovations in mind we are proposing a Context-Driven Cloud-Oriented Application Architecture for smart devices. This architecture enables our smart devices to behave smarter by utilizing very less of local resources.

• 디지털콘텐츠학회 논문지
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• 제15권2호
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• pp.197-207
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• 2014

많은 사람들이 다양한 플랫폼의 스마트폰으로 모바일 게임을 즐기고 있다. 그런데 게임개발을 할 때 스마트 단말기 플랫폼 별로 따로 개발을 해야 하는 것이 지금까지의 현실이었다. 이를 해결하기 위해 출시된 것이 게임개발 프레임워크인 Cocos2d-x이다. 기존의 Cocos2d에서 다중 플랫폼으로 발전시킨 것으로 하나의 소스 개발로 여러 모바일 기기 및 웹 브라우저 상에서 사용가능하도록 해준다. 공개 소프트웨어로 누구나 사용이 가능하며 C++과 OpenGL을 기반으로 쉽게 게임을 개발할 수 있다. 본 논문에서는 Cocos2d-x를 이용해 학습을 통한 PC실습실 공간 꾸미기 게임인 아이러브501을 구현하였다. 여기서 501은 저자들 소속 학교의 PC실습실 호수이다. 게임의 순기능 부각을 위해 퀴즈를 풀 수 있는 교육적 기능을 포함하였다. 멀티플랫폼 구현을 위해서 윈도우와 iOS환경에서 동시에 개발하였으며 안드로이드폰, 아이폰, 아이패드, 갤럭시탭 등 다양한 기기에 이식해서 실행 결과를 확인하였다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1995년도 추계학술대회 논문집
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• pp.769-772
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• 1995

Most turbo machines, which operate at high speeds, such as gas turbines, jet engines, pumps, and compressors are prone to perrturbing vibrations. The best vibration control method for rotors is to eliminate destabilizing factors. Careful balancing application of "more stable" oil-lubricated bearing, such as tilting pad bearings or use of anti-swirl devices in seals, are examplse of passive vibration control methods. the use of magnetic bearing is an active control method. An obvious advantage of active control is that it provides damping (or modifies system stiffness or other parameters) only when there is a need for that, i.e., in emergency states, while not affecting the rotor normal operational conditions. Moreover, active control methods provide exact position control through on-line control. In this study, a magnetic actuator, digital contrliier using DSP, and bipolar operational power supply/amplifiers were developed to show the effectiveness of reducing robot vibration. Also the curve fitting procedure to obtain the transfer function of frequency dependent component was developed. Results presented in this dissertation will provide a well-defined technical parameters in designing magnetic damper system.er system.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2011년도 춘계학술대회
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• pp.213-214
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• 2011

스마트 기기 시장의 대중화와 수요가 증가함에 따라 다양한 종류의 애플리케이션이 사용자들의 일상생활에 큰 부분을 차지하고 있다. 더욱이 최근 iPad, Smart TV 등 다양한 기기와 스마트 기기와의 정보교환이 원활하게 이루어져 다양한 서비스가 제공되고 있다. 본 논문에서는 최근 많은 관심을 받고 있는 스마트 기기를 이용하여 특정 식당정보를 획득하고, 필요시 사용자가 메뉴 정보를 업데이트 할 수 있는 식당메뉴관리 애플리케이션을 개발한다. 이는 식당의 메뉴를 찾아가지 않고 스마트 기기를 활용하여 미리 파악하고, 해당 메뉴에 대한 맛 평가를 하여 보다 더 좋은 식단 메뉴를 선택 할 수 있게 한다. 안드로이드 운영체제를 이용하여 각각의 식당서버에 접속하여 메뉴를 검색하고, 각 음식에 대한 정보들을 공유 및 업데이트 할 수 있는 애플리케이션을 설계 및 구현하였다.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2012년도 춘계학술발표대회
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• pp.953-956
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• 2012

CRM은 기업이 고객과 관련된 내외부 자료를 분석 통합해 고객 중심 자원을 극대화 하고 이를 토대로 고객특성에 맞게 마케팅 활동을 계획, 지원, 평가하는 과정이다. 본 논문은 Enterprise 환경에서 기존에 구축되어 있는 정보시스템을 활용하여 실시간 접근이 가능한 모바일 기기와 연동을 함으로써 효율성을 증대시킨 iPad 용 MobileCRM Application을 설계하였다.

• 대한인간공학회지
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• 제31권1호
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• pp.261-269
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• 2012

Objective: The aim of this study is to develop an analysis method to extract plausible types of errors when using a smart mobile in nuclear power plants. Background: Smart mobiles such as a smart-phone and a tablet computer(smart-pad) are to be introduced to the various industries. Nuclear power plant like APR1400 already adopted many up-to-date digital devices within its main control room. With this trend, various types of smart mobiles will be inevitably introduced to the nuclear field in the near future. However nuclear power plants(NPPs) should be managed considering a big risk as a result of the trend not only economically but also socially compared to the other industrial systems. It is formally required to make sure to reasonably prevent the all hazards due to the introduction of new technologies and devices before the application to the specific tasks in nuclear power plants. Method: We define interaction segments(IS) as a main architect of interaction description, and enumerate all plausible error segments(ES) for a part of design evaluation of digital devices. Results: We identify various types of interaction errors which are coped with reasonably by interaction design using smart mobiles. Conclusion: According to the application result of the proposed method, we conclude that the proposed method can be utilized to specify the requirements to the human error hazards in digital devices, and to conduct a human factors review during the design of digital devices. Application: The proposed method can be applied to predict the human errors of the tasks related to the digital devices; therefore we can ensure the safety to apply the digital devices to be introduced to NPPs.

• The Journal of Korean Physical Therapy
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• 제35권6호
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• pp.177-184
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• 2023

Purpose: The purpose of this study was to compare the concurrent validity and test-retest reliability of 'KPIMT Torticollis Protractor', a smart phone and I-pad application for convenient range of motion measurement, and 'Image J', an analysis software with high reliability and validity, according to head tilt and active cervical rotation angle. This was done to determine the clinical utility of 'KPIMT Torticollis Protractor'. Methods: Head tilt and active cervical spine rotation angles of 40 children with congenital muscular torticollis were measured using Image J and KPIMT Torticollis Protractor, respectively. The level of concurrent validity and inter-rater and intra-rater reliability between the two measurement methods were analyzed. Results: For forty participants, the concurrent validity between Image J and KPIMT Torticollis Protractor showed very high validity with ICC of ICC 0.977 (0.995-0.999), 0.994 (0.994-0.998), CV_ME% 0.71-0.72%, SEM% 0.31-0.34%, MDC% 0.86-0.94%. The test-retest intra-rater reliability showed very high reliability ICC 0.911 (0.911-0.966), CV_ME% 0.71%, SEM% 0.34-0.36%, MDC% 0.81-0.94%. The test-retest inter-rater showed very high reliability ICC 0.936 (0.933-0.957), CV_ME% 0.70%, SEM% 0.34-0.35%, MDC% 0.81-0.83%. Conclusion: The KPIMT Torticollis Protractor, a smart phone and IPD application, is a highly reliable and valid device for angle measurement in children with congenital myotonia and can be easily used in clinical practice.

• 대한청각학회지
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• 제18권3호
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• pp.105-111
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• 2014

Assistive listening devices (ALDs) refer to various types of amplification equipment designed to improve the communication of individuals with hard of hearing to enhance the accessibility to speech signal when individual hearing instruments are not sufficient. There are many types of ALDs to overcome a triangle of speech to noise ratio (SNR) problems, noise, distance, and reverberation. ALDs vary in their internal electronic mechanisms ranging from simple hard-wire microphone-amplifier units to more sophisticated broadcasting systems. They usually use microphones to capture an audio source and broadcast it wirelessly over a frequency modulation (FM), infra-red, induction loop, or other transmission techniques. The seven types of ALDs are introduced including hardwire devices, FM sound system, infra-red sound system, induction loop system, telephone listening devices, television, and alert/alarm system. Further development of digital wireless technology in hearing instruments will make possible direct communication with ALDs without any accessories in the near future. There are two technology solutions for digital wireless hearing instruments improving SNR and convenience. One is near-field magnetic induction combined with Bluetooth radio frequency (RF) transmission or proprietary RF transmission and the other is proprietary RF transmission alone. Recently launched digital wireless hearing aid applying this new technology can communicate from the hearing instrument to personal computer, phones, Wi-Fi, alert systems, and ALDs via iPhone, iPad, and iPod. However, it comes with its own iOS application offering a range of features but there is no option for Android users as of this moment.