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— In this paper, we address the problem of countering the control channel jamming in wireless communication systems. Targeting control traffic on a system like GSM (e.g., BCCH channel) leads to smart attacks that are four orders of magnitude more efficient than blind jamming. We propose several schemes based on coding theory and its applications that can(More)
Competitions have been successfully used to build and organize communities aiming to solve complex computational problems. Recently, the winner of an open online competition to solve a complex immunogenomics problem has produced an algorithm that has a higher accuracy and is 1,000 times faster than the corresponding algorithm developed by the US National(More)
ii Dedicated to my wife Linda and my c hildren Jonathan and Daniel for their encouragment and support. iii Acknowledgements I thank my advisor, Kenneth Baclawski for his support over the years that it took to complete this research. Ken was always quick t o understand my o wn eeorts, and came up with a great many useful suggestions, which I w as able to(More)
As applications of secure multicast in networks continue to grow, the demand for an efficient scheme to manage group keys for secure group communication becomes more urgent. In this paper, we propose a new key tree structure for group key management. With this optimal tree structure, system resources such as network bandwidth can be saved. We devise an(More)
Medicago truncatula, a close relative of alfalfa, is a preeminent model for studying nitrogen fixation, symbiosis, and legume genomics. The Medicago sequencing project began in 2003 with the goal to decipher sequences originated from the euchromatic portion of the genome. The initial sequencing approach was based on a BAC tiling path, culminating in a(More)
Bread wheat, one of the world’s staple food crops, has the largest, highly repetitive and polyploid genome among the cereal crops. The wheat genome holds the key to crop genetic improvement against challenges such as climate change, environmental degradation, and water scarcity. To unravel the complex wheat genome, the International Wheat Genome Sequencing(More)
OBJECTIVE Impairment in odor-naming ability and in verbal and visual semantic networks raised the hypothesis of a breakdown in the semantic network for odors in Alzheimer's disease (AD). The current study addressed this hypothesis. METHOD Twenty-four individuals, half patients with probable AD and half control participants, performed triadic-similarity(More)
—A traditional trade-off when designing a mission critical network is whether to deploy a small, dedicated network of highly reliable links (e.g. dedicated fiber) or a large-scale, distributed network of less reliable links (e.g. a leased line over the Internet). In making this decision, metrics are needed that can express the reliability and security of(More)
The present study examined the utility of two tests, the olfactory identification test and the olfactory threshold test, in detecting dementia of the Alzheimer's type in Chinese patients in Hong Kong. The olfactory identification test developed by Murphy, Anderson, and Markinson (1994) was utilized with some modifications of odor stimuli suitable for the(More)
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