통합 검색 | Korea Science

Barnes Joel;Rizos Chris;Kanli Mustafa;Small D;Voigt G;Gambale N;Lamance J;Nunan T
- 한국측량학회:학술대회논문집
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- 한국측량학회 2005년도 Proceedings of Aisa-Pacific International Seminar on Geomatics
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- pp.150-162
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- 2005
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Kjelleberg, Staffan;Barraud, Nicolas;Egan, Suhelen;Ho, Wing Ka;Huynh, Trieu Tran;Klebensberger, Janosch;Koh, Kai Shyang;Lucas-Elio, Patricia;Mai-Prochnow, Anne;Marshall, Dustin J.;Matz, Carsten;McDougald, Diane;Rice, Scott A.;Sanchez-Amat, Antonio;Schleheck, David;Shahbazi, Jeyran;Steinberg, Peter D.;Tan, Chuan Hao;Thomas, Torsten;Webb, Jermy S.;Woo, Jerry K.K.
- 한국미생물학회:학술대회논문집
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- 한국미생물학회 2008년도 International Meeting of the Microbiological Society of Korea
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- pp.42-44
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- 2008
Bacterial biofilms are analogous to multi-cellular organisms or to clonal communities of higher organisms. In this respect, it can be demonstrated that biofilms display the type of genetic variation associated with macroorganisms. The formation of genetic variants from biofilms is the result of internally produced and regulated signals and the appearance of these variants coincides with dispersal from the biofilm. Moreover, the generation of such variation, has similar outcomes for the bacterial community, where diversification of phenotypic traits ensures that the bacterial community optimizes its chances of success when dispersing or surviving when challenged with environmental stress. These observations increase the complexity with which we view bacteria and also suggest that microbial systems can serve as models for the testing of eukaryotic ecological theories.
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Ding, Weidong;Wang, Jinling;Li, Yong;Mumford, Peter;Rizos, Chris
- ETRI Journal
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- 제30권1호
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- pp.59-67
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- 2008
The necessity for the precise time synchronization of measurement data from multiple sensors is widely recognized in the field of global positioning system/inertial navigation system (GPS/INS) integration. Having precise time synchronization is critical for achieving high data fusion performance. The limitations and advantages of various time synchronization scenarios and existing solutions are investigated in this paper. A criterion for evaluating synchronization accuracy requirements is derived on the basis of a comparison of the Kalman filter innovation series and the platform dynamics. An innovative time synchronization solution using a counter and two latching registers is proposed. The proposed solution has been implemented with off-the-shelf components and tested. The resolution and accuracy analysis shows that the proposed solution can achieve a time synchronization accuracy of 0.1 ms if INS can provide a hard-wired timing signal. A synchronization accuracy of 2 ms was achieved when the test system was used to synchronize a low-grade micro-electromechanical inertial measurement unit (IMU), which has only an RS-232 data output interface.
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