Tor has become one of the most popular overlay networks for anonymizing TCP traffic. Hidden service provided by Tor allows users to run a TCP server under a pseudonym, and its resources can be accessed without the ope...
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In Networked control Systems (NCSs) the information is exchanged through a real-time communication network among control system components. So the network induced time delay and data dropouts are unavoidable in NCSs. ...
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In evolutionary graph theory [1] biologists study the problem of determining the probability that a small number of mutants overtake a population that is structured on a weighted, possibly directed graph. Currently Mo...
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ISBN:
(纸本)9780889869042
In evolutionary graph theory [1] biologists study the problem of determining the probability that a small number of mutants overtake a population that is structured on a weighted, possibly directed graph. Currently Monte Carlo simulations are used for estimating such fixation probabilities on directed graphs, since no good analytical methods exist. In this paper, we introduce a novel deterministic algorithm for computing fixation probabilities for strongly connected directed, weighted evolutionary graphs under the case of neutral drift, which we show to be a lower bound for the case where the mutant is more fit than the rest of the population (previously, this was only observed from simulation). We also show that, in neutral drift, fixation probability is additive under the weighted, directed case. We implement our algorithm and show experimentally that it consistently outperforms Monte Carlo simulations by several orders of magnitude, which can allow researchers to study fixation probability on much larger graphs.
In this paper, the performance of parallel interference cancellation (PIC) multiuser detector in orthogonal frequency division multiple access (OFDMA) mobile communication systems is investigated. In multiuser systems...
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Magnetotactic bacteria (MTB) can be used in a coordinated fashion to assemble micro-objects in an orderly manner To perform micro-assembly tasks, magnetotaxis-based control is used where a directional magnetic field i...
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ISBN:
(纸本)9780791844311
Magnetotactic bacteria (MTB) can be used in a coordinated fashion to assemble micro-objects in an orderly manner To perform micro-assembly tasks, magnetotaxis-based control is used where a directional magnetic field is generated to induce a torque on an embedded chain of membrane-based magnetic nanoparticles (MNP) named magnetosomes. Such chain acts like a nano-compass or a nano-steering system embedded in each bacterium. Such magnetotaxis-based control is then used to orient the MTB in such a way that the laminar flow created by their flagella bundles provides a displacement force on the micro-objects being assembled Since the force is generated by the bacteria, relatively large micro-objects can be moved with no requirement for electrical energy except for a relatively small value required for inducing a directional torque on the chain of magnetosomes in the cells. Because the energy required to generate the directional torque is independent on the population of MTB being involved but the displacement force can be scaled up withthe use of a larger swarm while the total workspace would typically be at microscale dimensions, the energy required for the coils configuration around such workspace and responsible for generating the directional torque can be reduced further to a very low level and hence, makes the implementation of mass-scale bacterial micro-assembly systems, a viable approach. Based on these findings, we propose a corresponding mass-scale system based on many workspaces, each relying on a swarm of MTB to perform micro-assembly tasks in parallel.
the agent's decision mechanism should take into account only the events which can influence the agent's decision. that is way it is necessary to embed the event processing technology into multi-agent systems d...
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Broadcast is a hot topic in wireless sensor network research. the main challenges are from network instability and complexity of communication collision. Currently, the broadcast protocols for sensor network focus on ...
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I/O virtualization plays an important role in client virtualization, and audio performance directly impacts user experience. Solutions for I/O virtualization includes full device emulation, split driver model and dire...
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In this paper we present and evaluate several methods for real-time environment representation by extracting object delimiters from the traffic scenes using a Dense Stereovision System. the delimiters detection is bas...
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this article describes the problem of the automatic production of a tuning fork with a tip for atomic force microscopy (AFM). It contains hardware and software (image processing) description of a self acting machine d...
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