• 한국국방경영분석학회지
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• 제35권2호
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• pp.15-31
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• 2009

본 논문은 방위사업청 개칭이후 국방획득체계 운영과정에서 드러난 몇 가지 비효율적인 문제점을 분석하고, 이를 개선하는데 필요한 방안을 모색하는데 있다. 이것은 앞으로 국방부가 획득체계를 개선할 시 참고자료로 활용하는데 도움을 줄 수 있을 것이다. 제시된 방안들은 첫째, 국방부와 방위사업청간 중기계획 및 예산편성에 관한 기능을 재정립해야 한다. 둘째,소요-획득-운영유지의 통합관리체계 구축을 통해 경제적 획득관리 및 전력발전을 도모해야 한다. 셋째, 소요-획득분야 인력순환(순환근무)을 제도화하고, 획득인력의 전문성 강화를 위해 인력관리법 및 전문교육체계를 구축해야 한다. 그리고 넷째, 무기체계 '총수명주기체계관리'를 시행하고, 방위사업청 주도의 개발 및 운용시험평가 방식을 개선해야 한다. 이것은 국방부-방위사업청-각 군 간 획득사업을 둘러싸고 파생되는 업무혼선과 갈등을 최소화하는데 있어 필수적인 요소들이다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1993년도 한국자동제어학술회의논문집(국내학술편); Seoul National University, Seoul; 20-22 Oct. 1993
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• pp.244-249
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• 1993

This paper proposes a method of automatic function test for parts mounted Printed Circuit Board. For this purpose, we designed a Data Acquisition Equipment, PC interface card and inspection software. The experiment was done for the coffee vending machine and its result was good.

• 대한본초학회지
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• 제22권4호
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• pp.51-58
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• 2007

Objectives : Investigation of the memory and cognitive enhancing effect of HT008-1 in scopolamine induced amnesia mice. Methods : At 60 min before acquisition trials, HT008-1 (30, 100, 300 mg/kg p.o.) was administered, and 30 min later, mice were injected with scopolamin (1.0 mg/kg, i.p.). In the passive avoidance test, acquisition trials were carried out 30 min after a single scopolamine treatment. Retention trials were carried out 24h after acquisition trials. Y-maze test was carried out 30 min after a single scopolamine treatment. Spontaneous alternation behavior during an 8-min session was recorded. Inhibitory effects of HT008-1 (0.01, 0.1, 1.0 mg/ml) on AChE activity was measured. Result : HT008-1 ameliorated scopolamine-induced learning impairments and spatial cognitive function in passive avoidance and Y-maze test, respectively. Moreover HT008-1 showed a significant inhibitory effect on AChE activity. Discussion: This study presented that eMultiherb mixture HT008-1 enhanced learning memory and spatial cognitive function in scopolamine-induced amnesia mice. These results suggest that the effect of HT008-1 may be dependent on the inhibition of AChE activity.

• 한국국방경영분석학회지
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• 제36권2호
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• pp.107-124
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• 2010

본 논문은 무기체계 획득사업의 초기단계인 소요기획 단계에서부터 무기체계 최종단계인 폐기시까지의 무기체계 획득 수명주기비용을 우리나라 현재 상황에서 적용할 수 있고, 신뢰할 수 있는 방법으로서 정태 동태적 민감도 분석을 통한 비용분석에 관한 연구이다. 또한 미래 발생 비용을 확률적으로 추정하여 단순한 비용 삭감의 수단으로 인식될 수 있는 기존의 비용분석방법에서 환율 등 중점관리변수에 초점을 맞추어 그 기능을 강화함으로써 총사업비의 규모를 판단하였다. 이러한 연구방법을 통해 다양한 획득방법별 소요비용을 추정 비교하여 비용측면에서 가장 유리한 획득대안을 도출한다는 데 본 연구의 의의를 두고자 한다.

• 대한전자공학회논문지TE
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• 제39권4호
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• pp.403-408
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• 2002

본 논문에서는 나카가미-m 확률밀도함수를 이용하여 페이딩 환경을 고려한 DS/CDMA(Direct Sequence Code Division Multiple Access) 시스템의 PN 부호 획득(acquisition)에 대한 성능을 분석하였다. 성능 분석은 PN 부호 획득 시간에 영향을 미치는 검출확률( P/sub D/ : detection probability)과 오경보확률(P/sub FA/ : false alarm probability) 에 대한 식을 유도하여 시물레이션으로 입증하였다. 그 결과 위상 오류를 보정하기 위하여 PLL의 이득을 높이고 레이크 수신기를 동시에 적용할 경우 PN 부호의 검출확률(P/sub D/)은 개선되었고, 오경보확률(P/sub FA/)은 감소하여 PN 부호의 동기 획득 성능을 개선시킬 수 있음을 입증하였다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 1998년도 하계종합학술대회논문집
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• pp.11-14
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• 1998

This paper introuces a new efficient method of synchronization acquisition which is the most important element in DS-CDMA system using the phase offset of binary code. This approach uses the binary code function which can easily estimate the phase offset from the received spreading waveforms which respect to the receiver-stored replica of the spreading code. This paper proposes the initial acquisition model with repeat error control device that is good for perfomance. The hardware is implemented by TMS320c30

• 대한전기학회논문지
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• 제32권9호
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• pp.305-314
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• 1983

This paper presents a general purpose data acquisition system based on the microprocessor system with M 6800. instrument and lograrithmic amplifiers and A/D converters are used to implement a signal conditioner for a various kinds of signals. The proposed system has a function such that the processor may select the one of the input signals as will and also it is proved that the system may control the control signal and digital converted signal through I/O port of PIA. Practical measurement by the proposed system shows in good results.

• 조명전기설비학회논문지
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• 제27권10호
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• pp.80-85
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• 2013

Recently it is becoming more common to apply vehicle electronics(Vetronics) based on information technology to improve the operability of the combat vehicles. Although the vehicle electronics system has been gradually developed, it is hard not only to design the reliable system which is a built-in multi-function but also to analyze the fault failure in the state of on-vehicle when failures occur. Therefore, It is required the data logging system like a aircraft's black box for the combat vehicles to enhance the reliability. In this paper, we developed the multi data acquisition and analysis device which is acquiring real-time data such as communication data, video data and voice data available for checking operational status of system and managing history. The performance of device has been proved on the vehicle.

• 아동학회지
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• 제18권2호
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• pp.73-85
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• 1997

The purpose of the present study was to examine the role of semantic and syntactic knowledge in the first language acquisition of Korean classifiers. The elicited classifiers production test(EPT) was conducted to 105 children aged from 2 to 7. EPT consisted of 16 classifiers and two items for each classifier. 32 items were divided into 2 major semantic features: animacy and inanimacy. The semantic features of inanimacy were subcategorized into 3 features such as neutral, shape and function. The results revealed that; 1) children produced the correct structure of classification from the very early age with correct word order of the noun phrase showing early fundamental syntactic knowledge; 2) The earliest response pattern was to respond to all nouns in the same way using a neutral classifier showing no apparent semantic basis for their choice; 3) Children didn't show any preference for animate, shape, or function classifiers.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2006년도 International Symposium on GPS/GNSS Vol.2
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• pp.285-289
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• 2006

In this paper, a design and implementation of GPS/Galileo software receiver is given. As a GPS receiver, it is able to perform every function of receiver such as acquisition, code and carrier tracking, navigation bit extraction, navigation data decoding, pseudorange calculations, and position calculations. A method to acquire and track the Galileo BOC(1,1) signal is also required because the correlation of BOC(1,1) signal has multiple peaks different from that of GPS signal. Therefore, a method to detect the main-peak in correlation function of BOC signal is required to avoid false acquisition. In this paper, very-early, very late correlation is implemented to track the correct main peak. The performance of implemented GPS/Galileo software receiver with BOC(1,1) signal tracking feature is evaluated with GPS/Galileo IF signal generator.