• East Asian mathematical journal
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• 제33권1호
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• pp.23-36
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• 2017

We study an optimization problem for HARA utility function under a multi-scale Heston's stochastic volatility model. We investigate a practical strategy that do not depend on the incorporated factor which is unobservable in the market.

• 한국군사과학기술학회지
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• 제23권5호
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• pp.452-458
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• 2020

In this paper, the contents of the development of RESS(Radar Environmental Signals Simulator) for the test of active phased array multi-function radar are described. The developed RESS can simulate multiple target environments, such as target/jamming/missile response/cluster signals, by using received radar operational information and simulated scenario. It can also modulate frequency, phase, gain, timing on all waveforms operated by multi-function radar and simulated two targets and one jamming in the beam. The RESS can be used to perform functional and performance verification of the active phased array multi-function radar with sub-array receiving structures.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1979년도 하계 전자.전기연합학술발표회논문집
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• pp.26-28
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• 1979

The optimal selection of Prime Implications for the multi-output switching function is difficult task, as the input variables increase. This paper is concerned with the technique for the minimization of the multi-output switching function using the intersection table. This procedure is applicable to both manual and computer-programmed realization without complexity.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2004년도 춘계학술대회 논문집
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• pp.231-234
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• 2004

Ratio that robot occupies is low level worldwide fairly in suspension wire, electricity electron and neutralization learning industry and domestic industry of this is staring in average love. Can speak that grafting of robotic machine and neutralization learning industry is high in terms of side of creation of the added value or progress of technology rightly hereupon. This research raises or designed multi-function handling robot that can make welding, assembly conveniently catching large size work water

• 한국통신학회논문지
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• 제39C권7호
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• pp.538-545
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• 2014

본 논문은 다운링크 다중 선박 네트워크에서 동적으로 협력 전송(CoMP Transmission; Coordinated Multi-point Transmission)을 사용하는 유틸리티 함수를 도출하고 이를 기반으로 스케줄링 기법을 제안한다. 제안하는 스케줄링 기법은 수율과 공정성을 고려한 PF 형태의 유틸리티 함수를 최대화하기 위해서 매 프레임 협력적 전송 여부를 결정하고, 유틸리티 함수를 최대화하는 사용자를 선택한다. 특히 제안하는 유틸리티 함수 기반의 스케줄링 기법은 셀 경계 지역에 위치하는 사용자의 서비스 품질을 만족시키는 것을 목적으로 한다. 무선 환경에서 PF(Proportional Fair) 스케줄링을 사용할 때 제안한 유틸리티 함수를 기반으로 하는 스케줄링 기법의 성능을 평가한다. 모의실험을 통하여 제안하는 스케줄링 기법은 협력적 통신 네트워크와 비협력적 통신 네트워크를 동적으로 사용함으로써 전체 네트워크의 성능을 유지하면서 가장자리에 있는 선박의 성능을 향상시키는 것을 확인하였다.

• 대한전기학회논문지:시스템및제어부문D
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• 제54권1호
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• pp.17-25
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• 2005

This paper provides sufficient conditions for the robustness of Affine linear TFM(Transfer Function Matrix) MIMO (Multi-Input Multi-Output) uncertain systems based on Rosenbrock's DNA (Direct Nyquist Array). The parametric uncertainty is modeled through a Affine TFM MIMO description, and the unstructured uncertainty through a bounded perturbation of Affine polynomials. Gershgorin's theorem and concepts of diagonal dominance and GB(Gershgorin Bands) are extended to include model uncertainty. For this type of parametric robust performance we show robustness of the Affine TFM systems using Nyquist diagram and GB, DNA(Direct Nyquist Array). Multiloop PI/PB controllers can be tuned by using a modified version of the Ziegler-Nickels (ZN) relations. Simulation examples show the performance and efficiency of the proposed multiloop design method.

• 한국군사과학기술학회지
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• 제23권2호
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• pp.185-193
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• 2020

This paper proposes a 3-screen multi-function console development method using ergonomic design approach. Ergonomically designed console has the advantage of decreasing operator fatigue and increasing concentration by providing better readability, operability and convenience. For this, thirty subjects participated in the experiment for 3-screen multi-function console design. Ergonomic standards of console design were used to establish experiment design and to eliminate incompatible results with ergonomic standards. Subjects evaluated the nine predefined placements of displays and asked to place the display and controllers in order to use comfortably. As a results, total 18 design criteria including displays and controllers placement were determined.

• 한국군사과학기술학회지
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• 제14권1호
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• pp.106-113
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• 2011

This paper describes Data Acquisition & Analysis System(DAS) for analysis of the multi-function radar. There are various information - beam probing data, clutter map data, plot data, target tracking data, RT tracking data, radar signal processing data, interface data - this device saves. The most important thing of data analysis is that a researcher gets a view of the whole data. The DAS intergrates with all of the data and provides overall information on the time matters occur. This is very useful advantage for approaching the matter easily. System algorithms of multi-function radar are improved by using this advantage. As a result of, range blank region have fallen about 72% and it is able to keep track in jammer environment.

• 대한기계학회논문집A
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• 제33권5호
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• pp.496-501
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• 2009

In micro electrochemical machining(micro-ECM), it is important to measure and control the potential of a tool electrode and a workpiece electrode because electrochemical reaction rate depends on the potential of the electrodes. When the electrode potential was measured against a reference electrode, the error of measured electrode potential could be minimized by proper tool electrode design. In this paper, multi-function electrodes consisting of a tool electrode and a reference electrode was fabricated by micro fabrication techniques. The machining conditions in micro-ECM using multi-function electrodes, such as pulse voltage parameters and electrode potential, were investigated.

• 정보보호학회논문지
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• 제25권5호
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• pp.1257-1268
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• 2015

다기능 주변기기는 원래 이미지 처리 작업을 중심으로 수행하는 장치였지만 팩스 기능이 결합하여 전자화된 이미지 데이터를 전송하는 기능과 네트워크 기능이 추가되어 비약적으로 발전하였다. 또한, 다기능 주변기기는 인터넷 응용, 애플리케이션 확장, 원격 공유, 이미지 처리의 기능이 추가되었다. 하지만 다기능 주변기기는 네트워크 연결로 인한 위협으로 발생하는 데이터 노출 및 도청 등의 보안 취약점이 발생할 수 있다. 따라서 다기능 주변기기에 대한 평가 기준이 필요하지만, 현재는 다기능 주변기기에 대한 공통된 보호프로파일이 존재하지 않아서 제품에 대한 안전성을 평가하는데 구체적인 평가 기준을 적용하지 않아 평가 품질의 균일성을 유지하는 것이 어려웠다. 따라서 본 논문에서는 다기능 주변기기에 대한 위협을 분석하여 안전한 다기능 주변기기를 사용하기 위해서 공통평가기준을 기반으로 다기능 주변기기에 대한 보호프로파일을 개발하였다.