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침입 감지기능을 가진 다중모드 GRIN ( graded - index ) 광섬유 내에서의 광파의 전파
손영호(Young Ho Sohn) 한국센서학회 2002 센서학회지 Vol.11 No.5
An intrusion-sensitive capability of multimode graded-index (GRIN) optical fibers under bending has been investigated. In this system, the data light is transmitted in the fundamental mode while alarm monitor light is launched in a high-order mode at the same time. An attempted intrusion to drain data by bending the fiber results in greater attenuation of a monitor signal in higher order modes, thereby setting off an alarm at the receiver. Light propagation in a multimode graded-index fiber is also analyzed theoretically when the fundamental mode is selectively excited and the fiber is bent around a constant radius mandrel. The bending generates coupling between the various modes of the fiber. Power transitions of the fundamental mode by changing the bending radius were also analyzed numerically using program simulation. It is shown that Asawa-Taylor model[4] is valid up to 1cm of the radius of curvature of the fiber bend.
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이호근(Ho Geun Lee),배장식(Jang Sik Bae),손영호(Young-Ho Sohn),이석규(Suk-Gyu Lee) 한국정보기술학회 2010 한국정보기술학회논문지 Vol.8 No.8
The sensor network consists of a number of wireless sensor nodes. Each sensor node collects surrounding information with its appointed purpose and transmits the collected data through the wireless network. In case of renewing executable images of sensor nodes, it is done via remote image alteration management servers. The alteration of executable images at sensor nodes should be efficiently accomplished considering the resource limit of each sensor node. The existing methods for altering the executable images are done through adding additional storing memory to additional sensors or accomplishing the alteration by operating complex algorithms. This paper discusses the embodiment of an effective executable image alteration protocol and system on the platform based on ATmega128MCU and their performance evaluation. The embodiment and performance evaluation are conducted via the process layer for executable images alteration protocol.
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박영민(Park, Young Min),손영호(Sohn, Young Ho) 대구과학대학교 국방안보연구소 2021 사회융합연구 Vol.5 No.2
유니티는 3D 게임을 위한 캐릭터 컨트롤러를 제공하지만, 아직 2D 캐릭터 컨트롤러는 제공하지 않는다. 이것은 개발자가 2D 물리적 환경에서 캐릭터의 움직임을 완전하게 제어할 수 있는 유니티용 2D 캐릭터 컨트롤러를 개발하는 계기가 되었다. 이렇게 개발된 컨트롤러는 플래이어 컨트롤을 크게 제한하는 유니티의 내장된 물리 기능을 대체할 수 있다. 본 논문에서는 구현한 컨트롤러는 쉽게 구현할 수 있으면서 2D 캐릭터를 제어하기에 매우 유용한 방법을 제공함으로써 게임 속 캐릭터의 이동과 게임 환경에 존재하는 물체와의 상호작용을 정확하게 제어할 수 있다. 이 컨트롤러는 플랫폼 게임용으로 설계되었지만 물리적 환경을 돌아다니며 상호 작용하는 캐릭터가 포함된 다른 2D 게임에도 쉽게 사용할 수 있다. 그리고 간단한 구조로 구현이 되어 초보자도 쉽게 파악하고 탐색할 수 있다. 노련한 게임 개발자는 이 기본 컨트롤러를 기반으로 기능을 확장해서 응용할 수 있고, 물리 구성 요소를 구현하는 2D 게임 디자인을 위한 완전한 솔루션을 제공할 수 있다. Unity provides character controllers for 3D games, but so far, 2D character controllers are not. This is where the developer develops a 2D character controller for Unity that allows full control of the character s movements in a 2D physical environment. Controllers developed in this way can replace Unity s built-in physics, which greatly limits player control. The controller implemented in this paper can be easily implemented while controlling 2D characters. It provides a very useful way to precisely control the movement of characters in the game and their interaction with what is in the game environment. These controllers can easily be used for other 2D games that contain interacting characters while moving around the physical environment you are designing for platform games. And it is implemented in a simple structure. Experienced game developers can extend the functionality based on this basic controller and apply it, providing a complete solution for 2D game design that implements physics components.
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Protein G와 NHS를 이용하여 고정한 anti-IgG의 검출 성능 비교
신은정 ( Eun Jung Sin ),손영호 ( Young Ho Sohn ),손영수 ( Young Soo Sohn ) 한국센서학회 2010 센서학회지 Vol.19 No.2
We have compared and investigated the detection capabilities of antibody of immunoglobulin G(anti-IgG) immobilized by protein G and N-hydroxysuccinimide(NHS) at the end of the self-assembled monolayer(SAM). Surface plasmon resonance(SPR) sensor has been utilized to measure the interaction between biomolecules. After formation of the protein G and SAM, anti-IgG, bovine serum albumin(BSA) and IgG has been sequently injected. Through the reponse of the SPR, we can conclude that the protein G immobilized anti-IgG better than the SAM. In addition, IgG detection capability of the anti-IgG immobilized by the protein G showed better performance compared with that immobilized by the SAM.
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De navo 특발성 파킨슨병 환자의 문단 읽기 과제에서의 호흡 특성
김병미(Kim Byung Me),손영호(Sohn Young Ho),백승재(Baek Seung Jae),이필휴(Lee Phil Hyu),남정모(Nam Chung Mo),이지은(Lee Ji Eun),최예린(Choi Yaelin) 한국음성학회 2011 말소리와 음성과학 Vol.3 No.1
Idiopathic Parkinson's Disease patients' speech is hypokinetic dysarthria and their speech is possibly the consequence of impaired respiratory support. The purpose of this study was focused on the respiratory characteristics of speech breathing in de novo IPD who were not given prior vocal or anti-Parkinson treatment. A total of 40 subjects participated in the study: 20 de novo IPD patients between the ages of 50 and 80, and 20 normal subjects with similar age, height, and weight matches. Forced Expiratory Vital Capacity (PVC), Forced Expiratory Volume in 1 sec (FEVl) and FEVI as a percentage of PVC (FEVI/FVC) was measured with a PC-based spirometer (Cosmed). In addition, Maximum Phonation Time (MPT), Mean Airflow Rate (MFR), Subglottal Pressure (Psub) and the number of syllables produced per breath were measured with a Phonatory Aerodynamic System (Kay PENTAX). All subjects were asked to read a standardized Korean paragraph and the following measurements were obtained from the task. Results indicated no statistically significant differences in respiratory function (FEVI/FVC%) and aerodynamic function between the two groups, but the number of syllables per breath was significantly lower in the IPD patient group than in the normal group and it could be predicted by PVC and MFR. Therefore, the study shows that the MFR from the lungs during speech in de novo IPD patients is used inefficiently.
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