• Title/Summary/Keyword: 오경

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A Study of Data Mining Methodology for Effective Analysis of False Alarm Event on Mechanical Security System (기계경비시스템 오경보 이벤트 분석을 위한 데이터마이닝 기법 연구)

  • Kim, Jong-Min;Choi, Kyong-Ho;Lee, Dong-Hwi
    • Convergence Security Journal
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    • v.12 no.2
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    • pp.61-70
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    • 2012
  • The objective of this study is to achieve the most optimal data mining for effective analysis of false alarm event on mechanical security system. To perform this, this study searches the cause of false alarm and suggests the data conversion and analysis methods to apply to several algorithm of WEKA, which is a data mining program, based on statistical data for the number of case on movement by false alarm, false alarm rate and cause of false alarm. Analysis methods are used to estimate false alarm and set more effective reaction for false alarm by applying several algorithm. To use the suitable data for effective analysis of false alarm event on mechanical security analysis this study uses Decision Tree, Naive Bayes, BayesNet Apriori and J48Tree algorithm, and applies the algorithm by deducting the highest value.

A Study on the Adoption of the FRBR According to the Bibliographic Relationships of Five Classics and Four Books (사서오경의 서지적 관계 특성에 따른 FRBR 적용에 관한 연구)

  • Kim, Jeong-Hyen
    • Journal of Korean Library and Information Science Society
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    • v.46 no.2
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    • pp.317-336
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    • 2015
  • This paper provides a brief overview of bibliographic relationships, a analysis of bibliographic relationships' characteristics of 2,940 bibliographic records on the Five Classics and Four Books taken from Korean National Bibliography, and a methodology for applying the FRBR model based on analysis of the samples. As results of analysis, the work type ranked high particularly in the commentary, translation with notes, and translation on the original works etc. I suggested adopting conception of supper works, that is, family of works and using uniform title as a connective device between the works, that is, an authorized access point of RDA to apply FRBR model of the Five Classics and Four Books. Also I exemplified the description of uniform title in 630 field as subject added entry.

Code Acquisition with Receive Diversity and Constant False Alarm Rate Schemes: 1. Homogeneous Fading Circumstance (수신기 다양성과 일정 오경보 확률 방법을 쓴 부호획득: 1. 균질 감쇄 환경)

  • Kwon Hyoung-Moon;Oh Jong-Ho;Song Iick-Ho;Lee Ju-Mi
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.31 no.4C
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    • pp.371-380
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    • 2006
  • The performance characteristics of the cell averaging(CA), greatest of(GO), and smallest of(SO) constant false alarm rate(CFAR) processors in homogeneous environment are obtained and compared when receiving antenna diversity is employed in the pseudonoise code acquisition of direct-sequence code division multiple access (DS/CDMA) systems. From the simulation results, it is observed that the CA CFAR scheme has the best performance and the GO CFAR scheme has almost the same performance as the CA CFAR scheme in homogeneous environment. In Part 2 of this paper, the CA, GO, and SO CFAR processors for code acquisition in nonhomogeneous environment are addressed.

Actual Status of and Measure for False Alarm of Electronic Security in Korea (한국 기계경비업무의 오경보 대응책)

  • Park, Dong-Kyun;Kim, Tae-Min
    • Korean Security Journal
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    • no.30
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    • pp.33-60
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    • 2012
  • False alarm of Electronic security causes various serious side effects such as decrease of electronic security guard's morale caused by unnecessary mobilization, increase of fatigue caused by workload increase, increase of electronic security company owner's management burden and decrease of electronic security service utilization rate caused by customer's distrust. Therefore, the study considered the Korean regulation related with false alarm of electronic security and proposed actual status of false alarm and measure for it. The study proposed systematic resolution assignments and political assignments in relation with the measure for false alarm. Systematic resolution assignments are as follows. First, electronic security company should construct electronic security system accurately from the initial step of security consulting and security planning related with target facility. Second, it is necessary to encourage installation and operation of video monitoring system. Third, sensor wiring should be separated. Fourth, the measures for false alarm depending on main system causes should be prepared. It is necessary to encourage the installation of 'arming disarming alarm sound' generator. In addition, the measures for false arm depending on the characteristics of sensor should be prepared and standardized. Fifth, system maintenance should be reinforced. Political assignments related with the measures for false alarm are as follows. First, it is necessary to reinforce education & training. Individual nurturing & education process should be run by electronic security company or the education focusing on the measure for false alarm should be performed in job training defined in "Security Industry Act". Second, it is necessary to establish and reinforce legal regulation and establish device. If police authority standardizes the documents related with false alarm, provides their forms and requires them for periodical reports or documents, it is expected that good measures for false alarm will be prepared on the basis of actual data in the future. Third, cooperation organization to discuss the measures for false alarm like 'Conference for False Alarm of Electronic Security' should be organized and operated. Fourth, interest and role of electronic security company and electronic security supervisor should be enlarged.

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연근해 소형 어선의 레이더 정보수록 및 해석 시스템 개발 - CFAR에 의한 레이더 잡음 억제-

  • 이대재;김광식;신형일;변덕수;강희영
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2003.10a
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    • pp.35-38
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    • 2003
  • 현재, 세계 여러나라에서 해상물표를 정확하게 탐지 및 검출하기 위한 방안으로 레이더 clutter 신호를 효과적으로 억제 및 제거하기 위한 연구가 활발하게 진행되고 있다. 일반적으로 레이더 반사파에 대한 envelope 신호의 진폭는 Rayleigh 분포에 따라 변동하는 특성을 나타내지만, clutter의 진폭분포의 파라 메터가 변동하여 분포형상이 변화하면, 오경보확률(false alarm probability)에도 변화가 발생하기 때문에 오경보확률을 충분히 낮은 일정치로써 억제시켜 일정오경보확률(constant false alarm rate, CFAR)을 유지하는 처리가 필요하다. (중략)

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인물포커스 - 오경록 대표/ 남덕에스피에스(국내유일의 SPF농장운영, 가금연구 발전 꾀한다.

  • Kim, Dong-Jin
    • KOREAN POULTRY JOURNAL
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    • v.41 no.1
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    • pp.80-81
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    • 2009
  • 1970년대 말 양계 선진화를 처음 시작한 천호그룹에서 부화장, 마니육종, SPF, 연구소 등 책임자로 활동한 경험을 비롯해 35년간 가금질병전문 연구자이자 양계업계의 산실인 오경록 대표를 소개하고자 한다. 현재는 국내 유일의 SPF(Specific Pathogen Free, 무균) 양계 농장을 두어, 종란과 실험계 공급을 통해 양계관련 연구 사업에 이바지하며, 30년 세월 간 본지 편집위원장으로도 활동하고 있는 (주)남덕에스피에프 오경록 대표를 만나보았다.

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Performance Analysis of Spectrum Sensing using CSI with False Alarm Selection (채널상태정보에 따른 False alarm 선택 스펙트럼 센싱 성능 분석)

  • Lee, Mi Sun;Kim, Jin Young
    • Journal of Satellite, Information and Communications
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    • v.8 no.4
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    • pp.1-5
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    • 2013
  • CR(Cognitive Radio) technology is maximized frequency reuse using unused frequency band. Conventional cooperative spectrum sensing has fixed false alarms. so all cooperative user has equal threshold. This problem is caused degradation of detection probability. so we propose and analysis the system model that false alarm differential setting through CSI(channel state information) for resonable threshold. Simulation results show improvement of detection probability.

호주의 SPF 시설을 돌아보고

  • 오경록
    • KOREAN POULTRY JOURNAL
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    • v.12 no.7 s.129
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    • pp.88-93
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    • 1980
  • 이 글은 국내에서는 처음으로 SPF종란 생산사업에 착수하는 천호부화장의 오경록 질병연구실장이 호주에 세워진 SPF 시설을 돌아보고 기고한 글로써 그동안 많은 양계인들의 염원이던 SPF 종란 생산이 한걸음 가까워졌다는 실감을 준다.

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Performance of the combined ${\bar{X}}-S^2$ chart according to determining individual control limits (관리한계 설정에 따른 ${\bar{X}}-S^2$ 관리도의 성능)

  • Hong, Hwi Ju;Lee, Jaeheon
    • The Korean Journal of Applied Statistics
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    • v.33 no.2
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    • pp.161-170
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    • 2020
  • The combined ${\bar{X}}-S^2$ chart is a traditional control chart for simultaneously detecting mean and variance. Control limits for the combined ${\bar{X}}-S^2$ chart are determined so that each chart has the same individual false alarm rate while maintaining the required false alarm rate for the combined chart. In this paper, we provide flexibility to allow the two charts to have different individual false alarm rates as well as evaluate the effect of flexibility. The individual false alarm rate of the ${\bar{X}}$ chart is taken to be γ times the individual false alarm rate of the S2 chart. To evaluate the effect of selecting the value of γ, we use the out-of-control average run length and relative mean index as the performance measure for the combined ${\bar{X}}-S^2$ chart.

Code Acquisition with Receive Diversity and Constant False Alarm Rate Schemes: 2. Nonhomogeneous Fading Circumstance (수신기 다양성과 일정 오경보 확률 방법을 쓴 부호획득: 2. 벼균질 감쇄 환경)

  • Kwon Hyoung-Moon;Kang Hyun-Gu;Park Ju-Ho;Ahn Tae-Hoon;Lee Sung-Ro;Song Iick-Ho
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.31 no.7C
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    • pp.725-734
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    • 2006
  • As a sequel to Part 1, the performance characteristics of the cell averaging (CA), greatest of (GO), and smallest of (SO) constant false alarm rate (CFAR) processors in nonhomogeneous environment are obtained and compared when receiving antenna diversity is employed in the pseudonoise (PN) code acquisition of direct-sequence code division multiple access (DS/CDMA) systems. Unlike in homogeneous environment, the GO CFAR processor is observed to exhibit the best performance in nonhomogeneous environment, with the CA CFAR processor performing the second best.