• 한국HCI학회:학술대회논문집
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• 2006.02a
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• pp.1056-1062
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• 2006

소니컴퓨터엔터테인먼트의 플레이스테이션(R)이나 마이크로소프트의 엑스박스(R)등의 비디오 게임기가 차지하고 있는 시장의 크기가 점점 커지고 있고, 이에 적용되는 기술도 점점 발전하고 있다. 최근에는 무선랜이나 블루투스 등의 기술을 통한 네트워크 연결을 통해 인터넷 접속이 가능해졌고, 간단한 문서 편집이나 개인 정보 관리 기능도 추가되었다. 이러한 기능들이 추가되면서 비디오 게임기에 문자를 입력하는 방법의 필요성이 일어나고 있다. 하지만 비디오 게임기의 기본 입력 장치인 아날로그 스틱을 이용하여 한국어를 입력하는 방법에 대한 연구는 부족한 상태이다. 본 논문에서는 한글의 창제원리를 이용하여 자음과 모음을 각각 아래쪽, 위쪽, 왼쪽, 오른쪽의 네 가지 기본 그룹으로 분류하고, 시계 방향 회전과 반시계 방향 회전을 이용해서 자모를 매핑하는 새로운 한국어 입력 방법인 ASK-HIM을 제안한다. ASK-HIM 은 화면 키보드와 비교를 하였을 때 좀 더 좋은 결과를 보여주었고, 단순한 방식으로 사용이 편리하다는 장점을 지니고 있다.

• Proceedings of the KSME Conference
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• 2000.04a
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• pp.556-561
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• 2000

This paper deals with the control of an active bending actuator fur a catheter. The bending actuator with 40mm in length utilizes three zigzag SMA (shape memory alloy) springs which are equally located in the circumference between inner $({\phi}2.5 mm)$ and outer $({\phi}3.0mm)$ tube. It is purposed on realization of desired bending angle $(90^{\circ})$ and direction $(360^{\circ})$. It is also installed in front of the catheter and used to guide a path at extremely bent or branched blood vessel. The performance-analysis of the bending actuator are investigated fur the purpose of optimizing the control of the bending actuator. The analog joy stick is used to command a bending angle and direction for the fast and accurate response. According to the commands of the joy stick, tensile force of each SMA spring is computed and obtained by controlling the temperature of each SMA spring using PWM (pulse width modulation) of supplied electric power.

• Journal of Biomedical Engineering Research
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• v.31 no.4
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• pp.269-274
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• 2010

The purpose of this study was to develop the FSR sensor suit that controls walking assist device for paraplegic patients. The FSR sensor suit was to detect user's intent and patterns for walking by measuring pressure on the palm and the sole of user's foot. It consisted of four modules: sensing pressure from palm, changing modes and detecting pressure on the palm/at the wrist, sensing pressure from the soles of user's foot, and host module that transmit FSR data obtained from sensing modules to PC. Sensing modules were connected to sensing pads which detect analog signals obtained from the palm or the sole of foot. These collect signals from the target regions, convert analog signals into digital signals, and transmit the final signals to host module via zigbee modules. Finally, host modules transmit the signals to host PC via zigbee modules. The study findings showed that forces measured at the palm when using a stick reflected user's intent to walk and forces at the sole of the user's foot revealed signals detecting walking state.

• Proceedings of the KIEE Conference
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• 2006.07d
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• pp.1846-1847
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• 2006

In this study, we developed the real-time controller for control loading system (CLS) of aircraft simulator. The CLS is given the forces as inputs: the exerted force by a pilot, which is determined according to the position of the control stick, and the calculated force by the host computer. And then CLS makes the pilot feel the back loading force by supplying the motor drive with the actuator signal. The developed real-time controller for CLS is organized into the five parts which are the position sensing part including a encoder, the A/D converter part for the analog load cell signal, the communication interface part to communicate with the host, the D/A converter for the actuator signal, and the CPU DSP2812 to carry out a control algorithm. We constructed the test control loading system and carried out the experiment with the developed real-time controller. The experimental results showed that the real-time controller generates the back loading forces similar to the desired back loading force graph.

• Journal of the korean academy of Pediatric Dentistry
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• v.36 no.3
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• pp.367-376
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• 2009

In this clinical research, the fluoride tape(SCMC-T-5) using fluoride(NaF) was developed and manufactured and the treatment effect of the fluoride tape in dentin hypersensitivity patients was evaluated and compared with the effect of existing fluoride varnish($CavityShield^{TM}$). Twenty two healthy adult patients(88 teeth) having dentin hypersensitivity participated in this clinical research and they were divided into two groups. The fluoride product was applied according to the manufacturer's instruction and the level of pain in the tooth after giving irritation using compressed air and ice stick was measured just after the application, after 3 days, after a week and after 4 weeks each using visual analog scale(VAS). In the experimental group, compared with the early VAS scores, all other VAS scores showed the significant decreases statistically. In the control group, all VAS scores except the VAS score of 34.091(air) measured 3 days after(using the irritation examination by the compressed air) showed the significant decreases statistically when compared with the early VAS scores. The fluoride tape and fluoride varnish used in this clinical research were able to treat the dentin hypersensitivity effectively.

• Journal of Korean Medicine Rehabilitation
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• v.18 no.1
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• pp.173-185
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• 2008

Objectives : The purpose of this study was to observe the effect of Bong (a type of stick which is called bong) Chuna manual therapy (CMT) on the correction of posterior inferior (PI) ilium deviation, and evaluate changes of pain intensity and Oswestry Disability Index (ODI) for the treatment of low back pain. Methods : We measured leg length inequality (LLI), as an indicator of correction of PI ilium, before and after the Bong CMT twice immediately, and also checked the change of LLI in the course of 10 times of treatment. Ten times of Bong CMT with oriental medical treatment, such as acupuncture and bee venom pharmacopuncture, were performed not only to correct the PI ilium deviation but also to alleviate pain. Visual Analog Scale (VAS) and Oswetry Low-back Pain Disability Index (ODI) score were scored to evaluate the pain and function of low back. Results : In this study, LLI was decreased in general while we performed correction of PI ilium deviation immediately, also effectively decreased comparing between before and after 10 times of Bong CMT, Bong CMT with oriental medical treatment improved pain and function of low back. Conclusions : These results suggest that Bong CMT may be an effective method for the correction of PI ilium deviation. However more rigorous study should be followed because of small cases report.