미지변수와 비구조적 변동을 갖는 시스템의 적응 H<SUB>∞</SUB> 제어

배병훈,박기환,이진수 제어로봇시스템학회 1999 제어로봇시스템학회 국내학술대회 논문집 Vol.4 No.10

건설폐기물 재활용에 관한 연구

배병훈 창원대학교 1999 環境硏究論文集 Vol.8 No.-

Rasch 모형을 이용한 한국판 사회적 바람직성 척도 단축형(SDS-9)의 타당화

배병훈,이동귀,함경애 한국상담학회 2015 상담학연구 Vol.16 No.6

The Social Desirability Scale-17 (SDS-17; unidimensional 16 items), developed by Stöber (2001), has distinct strengths including: (a) its convenience in survey administration thanks to its relatively small number of items, (b) appropriateness in its contents that presumably reflect the societal reality, and (c) its sound psychometric properties (i.e., reliability and validity estimates) with adult samples over the age of 18. This study aims to validate the SDS-17 with the sample of 302 Korean college students through systematic and robust processes to assess the appropriateness and difficulty level of each item using the Rasch model. As a result, nine final items with two factors were selected, and then convergent and discriminant validate estimates were calculated to assess the validity of the revised version (SDS-9). This study ends with discussion of the utility of the scale in Korean context as well as its limitations. Stöber(2001)의 사회적 바람직성 척도(Social Desirability Scale-17; SDS-17)는 단일요인의 총 16문항으로 구성되어 있는데 문항수가 상대적으로 적어 설문지 연구에 포함하기에 용이하며, 사회상을 잘 반영하여 문항의 내용과 표현이 적절하고, 18세 이상 성인 대상으로 신뢰도와 타당도가 높은 유용한 척도로 평가되고 있다. 본 연구에서는 SDS-17에 대한 체계적 문항분석 과정을 거쳐 한국판 사회적 바람직성 척도를 타당화 하고자 대학생 302명으로부터 수집된 자료에 대해 Rasch 평정모형을 적용하였다. 그 결과, 문항의 적합도와 곤란도 분석을 바탕으로 9개의 최종 문항을 선정한 후, 추가적으로 수렴 및 변별 타당도 검증을 실시하여 수정된 SDS-9 척도(2요인 9문항)의 타당도를 평가하였다. 끝으로 한국판 사회적 바람직성 척도의 활용방안과 본 연구의 제한점을 논의하였다.

온도센서를 사용하지 않는 MEMS 마이크로히터 온도제어시스템

배병훈,염정훈,B. R. Flachsbart,M. A. Shannon 대한전기학회 2006 전기학회논문지C Vol.55 No.11C

- In this paper, we present a temperature-controlled system for MEMS electrical resistance heaters without a temperature sensor. To rapidly control the heater temperature, the microheater system developed consists of a power supply, power amplifier, digital Proportional-Integral-Differential (PID) controller, and a quarter bridge circuit with the microheater and three resistors are nominally balanced. The microheaters are calibrated inside a convection oven to obtain the temperature coefficient with a linear or quadratic fit. A voltage amplifier applies the supply voltage proportional to the control signal from the PID controller. Small changes in heater resistance generate a finite voltage across the quarter bridge circuit, which is fed back to the PID controller to compare with the set-point and to generate the control signal. Two MEMS microheaters are used for evaluating the developed control system - a NiCr serpentine microheater for a preconcentrator and a Nickel microheater for Polymerase Chain Reaction (PCR) chip.

녹내장 치료용 능동형 압력조절밸브(Implant) 모델링 및 설계

배병훈,김낙훈,이연,기홍석,김선호,박기환,Bae, Byunghoon,Kim, Nakhoon,Lee, Yeon,Kee, Hongseok,Kim, Seoho,Park Kyihwan 대한기계학회 2001 大韓機械學會論文集A Vol.25 No.5

Glaucoma is an eye disease which is caused by abnormal high IOP (Intra Ocular Pressure). High IOP is caused by the aqueous humor which is produced consistently but not drained due to malfunction of the trabecular system which has a role of draining the aqueous humor into the venous system. Currently, there are three methods to treat glaucoma-using medicines, surgical operation, and using implant device. The first and second methods are not long acting, so the use of implants is increasing in these days in order to drain out the aqueous humor compulsory. However, though conventional implants have a capability of pressure regulation, they cannot maintain IOPs desired for different patients, and too much aqueous humor are usually drained, to cause hypotony. To solve these problems, it is needed to develop a new implant which is capable of controling the IOP actively and copes with personal difference of patients. An active glaucoma implant consists of the valve actuator, pressure sensor, controller, and power supply. In this paper, firstly, we make an analysis of the operation of a conventional implant using a bond graph and show defects and limitations of the conventional valve analytically. Secondly, we design and analyze a valve actuator considering actuation principles, resistance elements, control methods, and energy sources focused on power saving problem. Finally, using simulations the possibility of the proposed valve actuator is investigated.

신경전류 추적법을 이용한 뇌의 시각 신경로 추정 ( Estimation of the Visual Neuro-Pathway by the Source Tracing Method )

배병훈,김동우,최정미,김수용 대한전자공학회 1994 대한전자공학회 학술대회 Vol.1994 No.5

반건식-백필터에 의한 소각배가스 중의 HCI, SOx 제거 (Ⅰ)

배병훈,신남철,고경숙,김춘희,문종익,임경택 동아대학교 환경문제연구소 1997 硏究報告 Vol.20 No.1

This study has been carried out to investigate the removal efficiencies of HCl/SOx in a Spray-Dryer/Fabric-Filter system. In HCl/SOx removal, we could identify the key factors such as spray dryer outlet temperature, molar equivalence ratio(MER) and fabric filter velocity, but we couldn't find out the correlation of HCl and SOx. The removals of HCl/SOx were inversely proportional to spray dryer outlet temperature(l30~170℃) and filter velocity(l.0~1.5 m/min), at the MER, HCl removal efficiency was strongly proportional to MER, but SOx, removal efficiency was not particularly increased by MER over 1.5. The removal efficiencies of HCl/SOx were improved over 10% at the fabric filter. In this Spray-Dryer/Fabric-Filter system, HCl/SOx removal efficiencies were about 99%, 96% respectively.

한강의 '채식주의자'에 나타난 ‘근원적 상실’과 우울․자살충동의 상관관계 연구: 로버트 제이 리프톤의 ‘형성화’ 개념을 중심으로

배병훈 한국문학과종교학회 2017 문학과종교 Vol.22 No.3

This paper asserts that the deepest background of all depression lies in the emptiness and meaninglessness caused by ‘ultimate loss,’ and that the key to overcoming it is to restore the sense of ‘transcendence’ and ‘connection.’ The characters appearing in The Vegetarian by Kang Han are all lonely human beings. They live in their own way, but they are not truly alive. In their lives, they do not properly create what Robert J. Lifton calls a ‘formulation.’ They are not connected with each other and have no symbolic integration with ‘Ultimate Reality.’ They are living in a moribund life trapped by their own trauma or emptiness. At the same time, they all show signs of depression and suicidal impulse. Therefore, by observing the novel, this paper examines human lives in modern times where depressions are prevalent, and suggests ways to solve such problems.

Average 기법에 의한 Visual-TEP의 검출과 DC-Drift 제거에 의한 TEP 신호개선에 관한 연구

배병훈,최정미 대한의용생체공학회 1994 의공학회지 Vol.15 No.2

This paper presents average method to detect Visual-Transient Evoked Potential from the human scalp electric potential measured by the ElectroEncephaloGram. To confirm the validity of average method, the average-process is performed with both stimulated and no-stimulated potentials respectively, and both results are compared. The specific waveform, which is visual-transient evoked potential, is produced only in the case of stimulated potential. It was found that a dc-drift, due to instrumentation errors and other noises, can produce significant changes in the evoked-potential waveform. This can be removed with a high-pass filter (cut-off frequency=0.5Hz).

유발전위를 이용한 뇌의 시감각 및 체성감각 인지영역 추정기술

배병훈,김동우 대한의용생체공학회 1994 의공학회지 Vol.15 No.4

시각 및 손가락의 전기자극에 의해 머리표면에서 발생하는 유발전위를 검출하여 Source Tracing Method를 이용하여 뇌의 시각인지영역 및 손가락 감각인지영역을 추정하였다. 본 과정에서 유발전위 검출방식은 average method를 이용하였고, 흥분뉴런군에 대한 물리적 모델로 Single Current Dipole Model을 이용하고, 머리기하에 대한 3중구각모델을 이용하여 Forward Problem을 풀었다. Inverse Problem은 current dipole의 6개의 parameter에 대한 Least Square Error Method를 이용하여 신견흥분의 위치를 추정하였다. 이러한 결과와 생리학적으로 밝혀진 시각 및 체성감각 신경로와의 비교결과 유사성이 확인되었다. In this paper a study of neuro-pathway estimation based on visual and somatosensory evoked potential is given. The evoked potentials which are caused by visual and somatosensory stimulation are detected by an average method. The forward problem that is estimating a scalp potential from a given electrical source in the brain is solved by using a triple concentric spherical shell model of the head and a single current dipole model of the neuron activity. The inverse problem which calculates a source position is solved by a least square fit between the model predicted potential and a given evoked potential measurement. The similarities between estimated sensory neuro-pathways and physiological brain function regions are verified.