• Title/Summary/Keyword: Zeus

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Detection of systems infected with C&C Zeus through technique of Windows API hooking (Windows API 후킹 기법을 통한 C&C Zeus에 감염된 시스템의 탐지)

  • Park, Chul-Woo;Son, Ji-Woong;Hwang, Hyun-Ki;Kim, Ki-Chang
    • Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
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    • v.5 no.2
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    • pp.297-304
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    • 2015
  • Zeus is one of the will-published malwares. Generally, it infects PC by executing a specific binary file downloaded on the internet. When infected, try to hook a particular Windows API of the currently running processes. If process runs hooked API, this API executes a particular code of Zeus and your private information is leaked. This paper describes techniques to detect and hook Windows API. We believe the technique should be able to detect modern P2P Zeus.

Feeding Habits of John Dory Zeus faber in the Coastal Waters off Gori, Korea (고리 주변해역에서 출현하는 달고기 (Zeus faber)의 식성)

  • Huh, Sung-Hoi;Park, Joo-Myun;Baeck, Gun-Wook
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.39 no.4
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    • pp.357-362
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    • 2006
  • The feeding habits of John Dory (Zeus faber) were studied by examining the stomach contents of 317 specimens collected from January 2004 to December 2005 in the coastal waters off Gori, Korea. The standard length (SL) of the specimens ranged from 12 to 42 cm. Z. faber is a piscivore and consumes mainly teleost fish such as Psenopsis anomala, Trichiurus lepturus and Conger myriaster. Its diet also includes shrimp and cephalopods. Smaller individuals (<25 cm SL) consume shrimp and small fish such as Glossanodon semifasciatus. The proportion of these prey items decreases with increasing fish size, and this decrease is paralleled by increased consumption of lager fish such as Psenopsis anomala and Trichiurus lepturus. The prey size increases with Z. faber size.

Diet Composition of John Dory Zeus faber in the Coastal Waters of the South Sea, Korea (한국 남해 연안에 출현하는 달고기(Zeus faber)의 위내용물 조성)

  • Choi, Yu Jeong;Kim, Yeonghye;Lee, Jeong Hoon
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.54 no.4
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    • pp.526-531
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    • 2021
  • The diet composition of john dory Zeus faber, was investigated using 266 specimens collected in the coastal waters of the South Sea, Korea. The specimens ranged in total length (TL) from 12.5 to 43.2 cm. The Z. faber fed mainly on Pisces and less often on Macrura. We further analyzed the data by dividing the specimens into five classes (<15.0 cm, 15.0-20.0 cm, 20.0-25.0 cm, 25.0-30.0 cm, ≥30.0 cm). The Z. faber diet shifted with size class from predominantly consuming Macrura to Pisces. The proportion of Macrura consumed decreased with increasing body size, whereas the consumption of Pisces increased gradually.

Design and implementation of ground water safety evaluation system using spatial relationships (공간관계를 이용한 지하수 관정의 안전도 평가를 위한 시스템 설계 및 구현)

  • Lee, Jae-Bong;Kwak, Hoon-Sung
    • The KIPS Transactions:PartD
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    • v.11D no.1
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    • pp.31-38
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    • 2004
  • This paper is about to implement a system for ground water safety evaluation. Since ground water quality is affected from the contamination source of surface water, one can estimate the magnitude of affection and the source themselves. This paper suggests a method to evaluate the spatial relationship of ground water and its contamination sources, using“contain”and“distance”operators in GIS. The research area is the Kunsan City in Chonbuk province, and are 75th wells those are located between the 4th alluvium land types. The results of measured chemical factors and results of related evaluation of these wells are stored and represented in ZEUS 2000 GIS DBMS, and an interface for searching and studying, is implemented by using ZEUS/SQLX, ZEUS/COM, and Visual Basic 6.0 programming languages. After this research, the spatial relationship between hydro-geological geo-objects and ground water is verified and a efficient evaluation system using GIS is suggested. It is the topic of further study that tries to calibrate the suggested evaluation model by applying it to wider area.

Study on Improvement of Etch Rate and SiO2 Regrowth in High Selectivity Phosphoric Acid Process (고선택비 인산공정에서의 식각율 향상과 SiO2 재성장에 관한 연구)

  • Lee, Seunghoon;Mo, Sungwon;Lee, Yangho;Bae, JeongHyun
    • Korean Journal of Materials Research
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    • v.28 no.12
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    • pp.709-713
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    • 2018
  • To improve the etch rate of $Si_3N_4$ thin film, $H_2SiF_6$ is added to increase etching rate by more than two times. $SiO_3H_2$ is gradually added to obtain a selectivity of 170: 1 at 600 ppm. Moreover, when $SiO_3H_2$ is added, the etching rate of the $SiO_2$ thin film increases in proportion to the radius of the wafer. In $Si_3N_4$ thin film, there is no difference in the etching rate according to the position. However, in the $SiO_2$ thin film, the etching rate increases in proportion to the radius. At the center of the wafer, the re-growth phenomenon is confirmed at a specific concentration or above. The difference in etch rates of $SiO_2$ thin films and the reason for regrowth at these positions are interpreted as the result of the flow rate of the chemical solution replaced with fresh solution.

ZEUS: Handover algorithm for 5G to achieve zero handover failure

  • Park, Hyun-Seo;Lee, Yuro;Kim, Tae-Joong;Kim, Byung-Chul;Lee, Jae-Yong
    • ETRI Journal
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    • v.44 no.3
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    • pp.361-378
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    • 2022
  • In 5G, the required target for interruption time during a handover (HO) is 0 ms. However, when a handover failure (HOF) occurs, the interruption time increases significantly to more than hundreds of milliseconds. Therefore, to fulfill the requirement in as many scenarios as possible, we need to minimize HOF rate as close to zero as possible. 3GPP has recently introduced conditional HO (CHO) to improve mobility robustness. In this study, we propose "ZEro handover failure with Unforced and automatic time-to-execute Scaling" (ZEUS) algorithm to optimize HO parameters easily in the CHO. Analysis and simulation results demonstrate that ZEUS can achieve a zero HOF rate without increasing the ping-pong rate. These two metrics are typically used to assess an HO algorithm because there is a tradeoff between them. With the introduction of the CHO, which solves the tradeoff, only these two metrics are insufficient anymore. Therefore, to evaluate the optimality of an HO algorithm, we define a new integrated HO performance metric, mobility-aware average effective spectral efficiency (MASE). The simulation results show that ZEUS provides higher MASE than LTE and other CHO variants.

Feeding Habits of John dory, $Zeus$ $faber$ in the Coastal Waters of Geomun-do, Korea (거문도 주변해역에서 출현하는 달고기($Zeus$ $faber$)의 식성)

  • An, Young-Su;Park, Joo-Myun;Ye, Sang-Jin;Jeong, Jae-Mook;Baeck, Gun-Wook
    • Korean Journal of Ichthyology
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    • v.24 no.1
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    • pp.20-26
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    • 2012
  • The feeding habits of john dory, $Zeus$ $faber$, were studied using 462 specimens collected in the coastal waters of Geomun-do, Korea. The size of the specimens ranged from 7.8 to 40.2cm in standard length (SL). $Z.$ $faber$ was a piscivore that consumes mainly teleosts such as $Trichiurus$ $lepturus$, $Scomber$ $japonicus$, $Callanthias$ $japonicus$ and $Trachurus$ $japonicus$. Of the fish species $T.$ $lepturus$ was the most preferred prey. Its diet also includes cephalopods, shrimps and euphausia. Smaller individuals (<15 cm SL) fed mainly on fishes and cephalopods. The proportion of cephalopods decreased as body size increased, whereas the consumption of fishes gradually increased. Fishes accounted for almost stomach contents of larger individuals (more than 15 cm SL).

Color Filter Pattern Generation by Screen Printing

  • Choi, Yong-Jung;Lee, Taik-Min;Nam, Soo-Yong;Kim, Yong-Sung;Na, Dae-Yup;You, Choon-Woo;Shin, Dong-Youn;Kim, Kwang-Young;Jung, Kwang-Il
    • 한국정보디스플레이학회:학술대회논문집
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    • 2007.08a
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    • pp.380-383
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    • 2007
  • In this research, we present color filter which is patterned by screen printing method. Analysis of screen printing process, screen printing system, experiment for uniform printing in large area, characteristics of screen printed CF are investigated .In spite of limitation of precision, screen printed color filter is very cost- effective in respect of manufacturing facility and ink usage.

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Utilization of a virtual network for increasing network activities of ZeusBot (ZeusBot의 네트워크 발현율 향상을 위한 가상네트워크 활용 방안)

  • Kim, Kwang-Jun;Kim, Yeon-Kyung;Lee, Man-Hee
    • Proceedings of the Korea Information Processing Society Conference
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    • 2016.04a
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    • pp.311-314
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    • 2016
  • 본 논문에서는 가상네트워크를 활용하여 네트워크를 통해 악성행위를 하는 악성코드에 대한 동적 분석 결과 중 네트워크 발현율을 보다 향상시키고자 한다. 제우스 봇(Zeus Bot)의 특징과 네트워크 행위에 대하여 이해하고 봇(Bot)이 원하는 응답패킷(Response Packet)을 가상네트워크를 통해 제공함으로써 일반 동적 분석시 발현되지 않는 악성 행위를 발현시키고 네트워크 발현율을 보다 향상시킨다. 최종적으로 코드 커버리지(Code Coverage)를 넓혀 악성코드 유무를 판단, 예방 및 치료 대책을 마련에 기여한다.

Moving magnet operator monitoring system with high-precision position control (고정밀 위치제어가 가능한 자석가동자 모니터링 시스템)

  • Kim, Hong-youn;Kim, Seu-hong;Piao, Hai-lian
    • Proceedings of the Korea Information Processing Society Conference
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    • 2021.11a
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    • pp.756-759
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    • 2021
  • 본 논문은 기존의 5축 치아가공기나 반도체장비등에 사용하고 있는 회전형 모터의 경우는 엔코더와 리졸버를 사용하고 있다. 엔코더와 레졸버는 고가이므로 실제 산업현장에서 전동기의 위치 센서로는 적용하기가 힘들다. 또한 엔코더와 레졸버와 같은 광학식 위치센서는 그 크기와 내구성에 있어 약점이 있기 때문에 취부 할 때에도 어려움이 있다. 따라서 본 연구에서는 5축치아가공기에 적용하기 위해서 자석가동자를 만들었으며, 이러한 문제점을 해결하는 방안으로 리니어모터를 고정자로 하고 자석플레이트를 이동자로 하는 시스템과 별도의 리니어 스케일을 배제하고 기존의 정현파를 발생하는 2개의 리니어홀센서 및 영구자석을 이용하여 가동자의 절대위치와 이동 위치를 검출할 수 있는 리니어 모터 및 그 제어방법, 안정성 및 신뢰성을 향상시킬 수 있는 자석가동자를 이용하여 구동시 실시간으로 데이터를 확인할 수 있고 제어할 수 있는 모니터링 시스템을 개발하는 연구이다.