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Colluders Tracing on the Collusion Codes of Multimedia Fingerprinting Codes based on BIBD (BIBD 기반의 멀티미디어 핑거프린팅 코드의 공모코드들에 대한 공모자 추적)

  • Rhee, Kang-Hyeon
    • Journal of the Institute of Electronics Engineers of Korea CI
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    • v.46 no.6
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    • pp.79-86
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    • 2009
  • In this paper, it has the performance metrics and the utility evaluation of the collusion codes about multimedia fingerprinting code based on BIBD and then the tracing algorithm of all colluders is proposed. Among the collusion codes, the bit stream of "all 0" or "all 1" are generated, also same collusion code and bit reversed code with user's fingerprinting code are generated. Thus there was occurred some problems, in which a colluder is deciding to anti-colluder or anti-colluder is deciding to colluder. In this paper, for the performance metrics and the utility evaluation of the collude codes, the experiment onto the total solution is processed by the logical collusion operation added with a partially processed averaging attack in the past papers. The proposed performance metrics and the utility evaluation about the collusion code generated from multimedia fingerprinting code based on BIBD is operated. Through the experiment, it confirmed that the ratio of colluder tracing is 100%.

A Study on the Stochastic Demand Forecast for the Capacity Calculation of Urban Planning Facilities (도시계획시설 용량 산정을 위한 확률적 수요 예측에 관한 연구)

  • Jae Young Kang;Jong Jin Kim
    • Land and Housing Review
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    • v.15 no.1
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    • pp.135-146
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    • 2024
  • This study predicts the means sharing ratio of the urban air transportation (UAM) when the VertiHub of the UAM in the southern western part is built at Songjeong Station in Gwanju. Based on Monte Carlo simulation of the utility function and means selection logit model for each means of transportation, our findings indicate an average mode share of 0.95%, with a variability range from 0.07% to 4.7%. Moreover, 95% of the simulation outcomes fall below a 2.02% mode share. Sensitivity analysis, conducted via Tornado Plot, highlights that the mode share is principally influenced by factors such as the unit fare, cost parameter, basic fare, and the time required for takeoff and landing. Notably, a negative correlation exists for unit fare, basic fare, and takeoff and landing time, suggesting the necessity of setting an appropriate level of fair to enhance UAM utilization.

A study of the effectiveness of Online Maintenance for Nuclear Power Plant (원자력발전소 가동중정비 도입 효용성 고찰)

  • Hyun, Jin Woo;Yeom, Dong Un;Lee, Sang Dae
    • Journal of Energy Engineering
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    • v.29 no.1
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    • pp.52-57
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    • 2020
  • OLM(On-Line Maintenance) is PM(Preventive Maintenance) activity of safety related equipment during running of Nuclear Power Plants. Korea Hydro & Nuclear Power-co.(KHNP) and regulator institute already reviewed the adoption of on-line maintenance in 2010 but now because of changing conditions of nuclear industry it has been halted. Even though that, OLM is one of the most effective programs to enhance safety and operability of Nuclear power plant. Therefore this paper introduce the strengths of OLM and explain why we should apply to Nuclear power plant.

Photo-realistic Face Image Generation by DCGAN with error relearning (심층 적대적 생성 신경망의 오류 재학습을 이용한 얼굴 영상 생성 모델)

  • Ha, Yong-Wook;Hong, Dong-jin;Cha, Eui-Young
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2018.10a
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    • pp.617-619
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    • 2018
  • In this paper, We suggest a face image generating GAN model which is improved by an additive discriminator. This discriminator is trained to be specialized in preventing frequent mistake of generator. To verify the model suggested, we used $^*Inception$ score. We used 155,680 images of $^*celebA$ which is frontal face. We earned average 1.742p at Inception score and it is much better score compare to previous model.

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The Component and Effectiveness of Brand Valuation -Focused on Morning Glory (브랜드 가치평가의 구성요소 및 효용성 - 모닝글로리 브랜드를 중심으로)

  • Lee, Jung-Hee
    • Proceedings of the KAIS Fall Conference
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    • 2012.05a
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    • pp.162-165
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    • 2012
  • 브랜드는 장기적으로 꾸준히 육성하고 쌓아나가는 자산과 같은 개념이다. 한국능률협회컨설팅(KMAC)이 주관하는 한국산업의 브랜드파워(K-BPI) 조사결과, 소비재 일반부분 중 종합문구부문에서 모닝글로리는 11년 연속 1위로 소비재일반 카테고리에서 가장 로열티가 높은 브랜드 최상위 권을 유지하고 있다. 브랜드 가치 평가의 구성요소를 추출한 후, 모닝글로리 브랜드의 주요 특징을 정리하여 현 브랜드 환경을 살펴봄으로써 본 연구는 브랜드 정책의 방향을 수립하는 데에 지침이 될 것이다.

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Design and Performance Valuation of Automatic Control System Using Sensor (센서노드를 이용한 자동관리 시스템의 설계와 성능 평가)

  • Cha, Jin-Man;Park, Yeoun-Sik
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2007.10a
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    • pp.942-945
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    • 2007
  • 유비쿼터스 환경에서 여러 종류의 센서들은 우리에게 많은 이점들을 주며 우리 생활에 보다 친숙한 생활 형태로 발달하고 있다. 이러한 센서노드들의 활용범위는 너무 범위가 넓기 때문에 지금 까지도 여러분야가 계발 중에 있다. 이러한 분야들 중 자동화 관리 시스템 분야는 대부분이 공업과 관련된 분야의 연구가 활발히 진행되어 왔다. 그 주류로서의 분야는 대부분 제조 공정의 자동화가 대부분을 차지하고 있었으며 일부분의 타 관리 시스템이 존재 하는 형태로 진행되어 왔다. 이러한 동향은 최근들어 유비쿼터스에 관한 많은 관심속에 우리와 밀접한 관련이 있는 실생활에 점점 도입되고 있다. 하지만 1차산업과 관련한 자동화 관리 시스템의 개발은 아직도 미비한 수준에 있으며, 이 또한 외국에서 개발된 상품을 수입하여 적용시키는 단계에 머물러 있는 것이 현재의 1차 산업의 관리 시스템의 실정이다. 이에 본 논문에서는 우리의 1차 산업과 관련된 분야에 적용 가능한 센서를 이용한 관리 시스템을 설계하고 이를 평가하고자 관리 시스템을 설계하였으며, 이에 따른 효용성을 평가 하였다.

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A Study on Evaluation Criteria of VMS User's Utility in Urban Roads (도시부도로 VMS 이용자 효용의 평가기준에 관한 연구)

  • Lim, Joon-Bum;Shin, So-Young;Kim, Tae-Hee;Park, Bum-Jin
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.10 no.3
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    • pp.36-46
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    • 2011
  • At present, the number of local governments using the Traffic Information Center are increasing and drivers are utilizing its traffic information from VMS installed on roads in cities. However, the cases of the user's utility of VMS about urban roads with special characteristics different from expressways and urban highways haven't been evaluated so far. Because VMS is a medium installed from a budget to provide traffic information, it is necessary to evaluate and manage the efficiency of users. This study judged that the efficiency of the drivers using VMS of urban roads most influences the duty on alternative route information provision so that it established its evaluation criteria. In addition, it needs to raise its value by many drivers' observation of VMS. Therefore, in case of the same conditions, the installation location of VMS should be a road section with much traffic volume so its the evaluation criteria was established. At present, the study results can be utilized to raise the user's utility of VMS installed in the urban roads.

Analysis of Containment Capability of Oil Fence in Currents and Waves (조류와 파랑중에서의 유벽의 보유성능 해석)

  • Lee Choung Mook;Kang Kwan Hyoung
    • Journal of the Korean Society for Marine Environment & Energy
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    • v.1 no.1
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    • pp.29-38
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    • 1998
  • This paper summarizes the results of the investigations performed by the authors for a number of years on the performance of oil fences in currents and waves. The leakage inception velocity of currents, the wave-exciting motion of fences and the deformation of the fence skirt due to currents are investigated. The results show that improvement of the fence performance is necessary in order to utilize the oil fences as an effective containing device for spilt oils in ocean environments. As an approach toward improving the fence effectiveness, tandem fences in currents are investigated. It was found that an appropriate deployment of tandem fences of identical configuration could significantly improve the oil containment capability.

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Immune Reconstitution Inflammatory Syndrome-Like Reaction During the Treatment of Pneumocystis jirovecii Pneumonia in an Infant With Severe Combined Immunodeficiency

  • Ching-Yu Lin;Sung-Min Lim;Soo-Yeon Kim;Seung-Min Hahn;Jong-Gyun Ahn;Ji-Man Kang
    • Pediatric Infection and Vaccine
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    • v.31 no.1
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    • pp.130-135
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    • 2024
  • The effectiveness of corticosteroids in preventing immune reconstitution inflammatory syndrome in non-human immunodeficiency viruses Pneumocystis carinii pneumonia (PCP) patients, such as severe combined immunodeficiency (SCID) patients, is controversial. We experienced a paradoxical reaction during severe PCP treatment in a SCID infant, which responded well to adjuvant corticosteroids.

태양열 구동 흡수식 냉방 시스템 실증

  • Gwak, Hui-Yeol
    • 한국신재생에너지학회:학술대회논문집
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    • 2005.11a
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    • pp.353-362
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    • 2005
  • 태양열시스템은 하절기에 급탕과 난방 부하가 적거나, 거의 없어 시스템의 과열 문제가 야기 될 수 있다. 이를 해결하는 방안 중에 하나로 흡수식 냉방시스템을 이용하여 하절기 잉여열원을 활용하여 냉방하는 방법이 대두되고 있다. 태양열 냉방시스템은 전기에너지를 대체하는 효과 뿐 아니라 태양열 연간 이용 효율 극대화에도 크게 기여 할 수 있다. 본 고에서는 국내 기술로 최초로 개발 실용화된 중온용 단일 진공관형 태양열 집열기와 1중 효용 흡수식 냉방기를 이용하여 실증연구를 계획하였다. 태양열 냉방 실증을 위하여 단일 진공관형 태양열 집열기 집열면적 200m2, 축열조(태양열, 급탕, 냉수), 10RT급 냉방기, 냉각탑, 보조 보일러, 원격 제어 및 모니터링 등이 계획 되었다. 실증시험 중간 결과 태양열 냉방시스템은 하절기 맑은 날 하루 동안 약 5 - 6시간 안정적으로 가동 되었으며, 앞으로 온수급탕, 난방 시험을 거쳐 시스템 성능 및 경제성 평가를 통하여 유용성, 안정성 및 신뢰성이 검증 될 계획이다.

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