• 한국국방경영분석학회지
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• 제31권2호
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• pp.86-104
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• 2005

During the 'Cold War', DoD had focused on the high performance and timely acquisition which enabled quick field out the superior weapons than the enemy regardless of acquisition cost. But, after the cold war, the focus has been changed to the 'cost effective acquisition' of weapon systems because of tremendous investment cost & economic theory. The U.S. DoD has been tried to make 'the most effective acquisition system'(AR, Acquisition Reform) from mid-80's with their enough experienced program data, and as a result, they had launched the new acquisition procedure - DoD 5000 series - in 1996. DoD is continuously doing the study and making several improvements on the procedure after it had been once announced. On Oct 30. 2002, DoD noticed that they cancelled the DoD 5000 series documents(5000.1, 5000.2, 5000.2-R) and 5000.2-R will be reissued as a guide. The most recent version which focused on 1) evolutionary acquisition and spiral development, 2) procedure for future technology systems including software and IT, 3) supplement on the area of efficiency, flexibility, creativity and innovation of old system was issued by May 12. 2003. This article suggests a 'good idea' based on the reviewing of these DoD efforts for our defense acquisition regulation and procedure to go. It includes the CAIV concept application, IPT utilization, T&E method, cost or price based contract etc-all for the effective acquisition.

• 시스템엔지니어링학술지
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• 제5권1호
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• pp.57-65
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• 2009

The purpose of Defense Acquisition Project is that the superior weapons validated needs and performance are supplied to military user with limited financial resources and time. The Warship Acquisition Project is not only like this, But also has special characteristics of long project period and first-constructed ship's operation employment. So, The Warship Acquisition Project need systematic and efficient procedure & management. And this paper researches System engineering application of imaginary WIG(Wing-In-Ground Effect) ship acquisition project based Systems Engineering Handbook ver.3.1 published by INCOSE, the lead of field. The Imaginary WIG(Wing-In-Ground Effect) ship acquisition project applied the four processes(technical project, Enterprise & Agreement, Enabling Systems), the basis of INCOSE Engineering Handbook ver.3.1, and the each process output compared with DAPA(Defense Acquisition Program Administration)'s warship acquisition procedure.

• 대한산업공학회지
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• 제10권1호
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• pp.3-10
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• 1984

A materials acquisition planning (MAP) problem that involves the determination of how much to order of a number of different items from a number of different suppliers is considered. This particular problem is modelled as a nonlinear mixed integer programming problem. A solution procedure based upon the partition of variables is developed to handle the MAP problem. This solution procedure utilizes a modified Hooke-Jeeves Pattern Search procedure along with a linear programming simplex algorithm. An example problem is presented and the results of applying the suggested solution procedure to this problem are reported.

• Journal of Power Electronics
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• 제12권5호
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• pp.813-820
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• 2012

This paper presents the development of a software supported acquisition system for metrological verification and testing of the equipment for monitoring and analysis of the basic electrical power quality parameters. The described procedure consists of two functionally connected segments. The first segment involves generation of the reference three-phase voltage signals, including the possibility of simulation of the various power quality disturbances, typical for electrical power distribution networks. The second part of this procedure includes the real-time recording of power quality disturbances in three-phase distribution networks. The procedure is functionally supported by the virtual instrumentation concept, including a software application developed in LabVIEW environment and data acquisition boards NI 6713 and NI 9215A. The software support of this system performs graphical presentation of the previously generated and recorded signal waveforms. A number of the control functions and buttons, implemented on the virtual instrument front panels, are provided to adjust the basic signal acquisition, generation and recording parameters.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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• pp.501-504
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• 2005

In general, most incomplete communication link setup between satellite and ground station right after separation from launcher come from less accurate orbital vector ground station uses to track the satellite because only predicted orbital state vector is available during first few orbits. This paper describes the developed procedure for successful initial acquisition for KOMPSAT-2 using scanning functions ofK13 antenna system with predicted orbital information. Azimuth scan, raster scan, spiral scan functions were tested with KOMPSA Tl under intentionally degraded orbital information for antenna operation. Through tests, spiral scan function was decided to be best search scan among 3 scans. Developed procedure can assure the successful acquisition only if azimuth offset and time offset value are within +/-2deg and +/-30sec, respectively.

• 한국철도학회논문집
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• 제13권3호
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• pp.257-263
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• 2010

일반적으로 철도차량의 운영 유지보수 비용은 구입비용보다 높다. 따라서 철도차량의 수명주기비용(LCC)을 낮추기 위해서는 운영 및 유지보수가 용이하고 비용이 적게 드는 차량이 설계되고, 효과적이고 효율적인 운영 유지보수 지원 시스템이 공급되어야 한다. 이를 위해서 운영사는 획득초기단계에서 LCC 요구사항을제시하여 LCC가 낮은 철도차량이 설계되고 제작될 수 있도록 해야 한다. 본 연구에서는 운영사가 차량의 구매사양을 공고하고 제작사가 차량을 제작하여 공급하는 일반적인 차량의 획득절차에서 운영사와 제작사의 LCC업무 및 절차를 제시한다. 또한 이 때 사용될 수 있는 검증 가능한 LCC 산출모형을 제시한다.

• 정보보호학회논문지
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• 제25권1호
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• pp.39-48
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• 2015

최근 개인정보보호에 관심이 증대되면서 암호화 솔루션 사용이 증가하고 있다. 또한, Windows XP 서비스 지원 종료와 함께 사용자의 운영체제 사양이 향상되면서, Bitlocker와 같은 Full Disk Encryption 솔루션의 활용도가 높아질 것으로 예상된다. 따라서 앞으로의 디지털 포렌식 조사는 Full Disk Encryption 환경에 대한 대응이 필요하다. 본 논문에서는 Full Disk Encryption 환경에 대응하는 디지털 증거 수집 절차를 제안하고 Full Disk Encryption 솔루션 중 사용률이 높은 제품들의 대응 방법 및 탐지 도구를 소개한다.

• 정보보호학회논문지
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• 제33권3호
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• pp.537-547
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• 2023

사물인터넷(Internet of Things)기술이 발전함에 따라 다양한 분야에서 사물인터넷 기기를 활용하고 있다. 하지만 이는 새로운 사이버 공격 표면이 되었고 기존 사이버 침해사고를 염두하지 않았던 산업까지 영향을 미치는중이다. 침해사고 발생 이후 사후처리, 피해확산 방지 등이 중요하지만 이에 관련된 표준이나 가이드라인이 부족하여 대응하기 어려운 현황이다. 따라서 본 논문에서는 이러한 침해사고 대응을 위해 침해사고 데이터 수집 절차를 정립하고 수집 가능한 데이터를 제시하여 범용적인 사물인터넷 기기의 침해사고 데이터 수집 방안을 개선하였다. 또한 실험을 통해 데이터 수집 절차의 효율성과 타당성을 증명하였다.

• 조명전기설비학회논문지
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• 제17권2호
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• pp.102-108
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• 2003

본 논문에서는 SDAS(Signal Data Acquisition System)를 설계하여 정밀도와 응답특성을 향상시킨 새로운 정보취득장치를 제안한다. 원자력 발전소에 적용되는 계측제어 시스템은 안전에 직접 또는 간접적으로 영향을 미치는 장치이므로 이들 기기는 안전등급의 분류에 따라 기기 검증의 절차에 의하여 현장 적용 이전에 주요 제어 설비가 설계명수 기간동안에 의도된 기능을 수행할 수 있음이 검증되어야 한다. 본 논문에서는 국제 기준 규격인 IEEE 규격과 Nuclear Regulatory Guide의 규격에 명시되어 있는 성능시험방법과 절차에 의한 기기검증에서 필수적인 장비인 정보취득장치를 제안하였고, 기존에 사용되고 있는 정보취득장치와 성능을 비교 분석하였다. 이론과 실험적인 연구가 수행되었고, 그 결과는 제안된 정보취득장치의 정밀도 성능이 개선되었음을 입증한다. 따라서 제안된 시스템은 고성능 계측제어시스템에 적용될 수 있다.

• 한국통신학회논문지
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• 제21권2호
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• pp.383-393
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• 1996

This paper considers the evaluation of the ecquistion performance for an accesschannel preamble based on a random access procedure of direct sequence code division multiple access(DS/CDMA) reverse link. The parallel acquistion technique that employs the single-well detection scheme and the multiple-dwell(double-dwell) detection scheme is mentioned. The acquisition performance for two detection schemes is compared in therms of the acquisition probability and the acquisition time. The parallel acquisition is done by a bank of N parallel I/Q noncoherent correlators. Expressions on the detection, false alarm, and miss probabilities of the single-dwell and multiple-dwell(double-well) detection schemes are derived for multiple H$_{1}$ cells and multipath Rayleight fading channel. comparing the single-dwell detection scheme with the multiple-dwell(double-dwell) detection scheme in the case of employing the parallel acquisition technique in the reverse link,the numerical results show that the single-dwell detection scheme deomonstrates a better performance.