The three articles cited here examine oscillating circuits. The first paper was presented at HOT SoS 2014, the Symposium and Bootcamp on the Science of Security (HotSoS), a research event centered on the Science of Security held April 8-9, 2014 in Raleigh, North Carolina.

• “Analyzing an Adaptive Reputation Metric for Anonymity Systems”. Anupam Das, Nikita Borisov, and Matthew Caesar. HOT SoS 2014 (To be published 2014 in Journals of the ACM) (ID#:14-1366) Available at: http://www.hot-sos.org/2014/proceedings/papers.pdf    This paper focuses on low-latency anonymity systems, which utilizes innumerable intermediary relays to forward traffic. Tor, a free software with the purpose of obscuring user location and identity, is a popular example of an anonymity system. Such relays, in addition to unreliability, may also be vulnerable to maliciously coordinated relay failures, which jeopardizes anonymity. The authors of this paper propose the use of a reputation matrix, based on users’ past experiences, to help map relay reliability. The presented framework uses a proportional-integral-derivative (PID) reputation metric, which solves the challenge of capturing malicious actors who deliberately flit between exhibiting hostile to benign behavior. The framework would assign a low reputation score over time to such actors. Another challenge addressed is the difficulty in isolating which relay caused an anonymous communication to fail. The authors propose a filtering scheme, which will eliminate relays with the largest accumulation of attacks. Live data is collected from a Tor network, with results of the study discussed. Keywords: Anonymity, Reputation Model, Tor Network, PID controller.

• Stavrinides, S.G.; Karagiorgos, N.F.; Papathanasiou, K.; Nikolaidis, S.; Anagnostopoulos, A.N., "A Digital Nonautonomous Chaotic Oscillator Suitable for Information Transmission," Circuits and Systems II: Express Briefs, IEEE Transactions on , vol.60, no.12, pp.887,891, Dec. 2013 (ID#:14-1367) Available at: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6654269&isnumber=6679724  In this brief, an all-digital chaotic operating electronic circuit, which is suitable for information modulation and chaotic transmission, is introduced. The chaotic oscillating circuit is a nonautonomous one, and it is designed in such a way that signals at all stages are digital ones. No analog subcircuit is involved in generating chaos. Oscillator design and experimental demonstration of its chaotic behavior are provided, together with the evaluation of the chaotic properties that it possesses, employing established nonlinear dynamics tools. Keywords: {chaos; digital integrated circuits; nonlinear dynamical systems; oscillators; all-digital chaotic circuit; chaotic oscillating circuit; chaotic properties; chaotic transmission; digital nonautonomous chaotic oscillator; information modulation; information transmission; nonlinear dynamics tools; operating electronic circuit; Chaotic communication; Digital circuits; Entropy; Oscillators; Synchronization; Time series analysis; Chaotic circuit; chaotic modulation; digital oscillators; secure communication

•  JunSeong Kim; Jongsu Yi; Ho-Hyun Park, "A case study on oscillating behavior of end-to-end network latency," Information Networking (ICOIN), 2012 International Conference on , vol., no., pp.512,516, 1-3 Feb. 2012 (ID#:14-1368) Available at: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6164430&isnumber=6164338 Understanding network latency is important for providing consistent and acceptable levels of services in network-based applications. Due to the difficulty of estimating applications' network demands and the difficulty of predicting network load, however, the management of network resources has often been ignored in network-based systems. This paper presents network traffic oscillating behavior that has been observed in real operational networks. The basic idea on the study is that a variation of network latency is strongly correlated with the past history of the latency. Four typical network traffic status are defined based on the stability and the burstiness of latencies. Observations of network latency are an open research area across multi-time scale levels and the proposed network status would be helpful to simplify issues in the area. Keywords: {telecommunication network management; telecommunication traffic; end-to-end network latency; multitime scale level; network resources management; network traffic oscillating behavior; real operational network; Delay; History; Internet; Numerical models; Predictive models; Telecommunication traffic; end-to-end network latency; network burstiness; network stability; network traffic status; time series

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Articles listed on these pages have been found on publicly available internet pages and are cited with links to those pages. Some of the information included herein has been reprinted with permission from the authors or data repositories. Direct any requests via Email to SoS.Project (at) SecureDataBank.net for removal of the links or modifications to specific citations. Please include the ID# of the specific citation in your correspondence.