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1.1 INTRODUCTION Advances in technology have made it possible to build ad hoc sensor networks using inexpensive nodes consisting of a low power processor, a modest amount of memory, a wireless network transceiver and a sensor board; a typical node is comparable in size to 2 AA batteries [10]. Many novel applications are emerging: habitat monitoring, smart(More)
We introduce Simultaneous Localization and Tracking, called SLAT, the problem of tracking a target in a sensor network while simultaneously localizing and calibrating the nodes of the network. Our proposed solution, LaSLAT, is a Bayesian filter that provides on-line probabilistic estimates of sensor locations and target tracks. It does not require globally(More)
Recent advances in next-generation DNA sequencing technologies have made possible the development of high-throughput SNP genotyping platforms that allow for the simultaneous interrogation of thousands of single-nucleotide polymorphisms (SNPs). Such resources have the potential to facilitate the rapid development of high-density genetic maps, and to enable(More)
Spanner is Google's scalable, multi-version, globally-distributed, and synchronously-replicated database. It is the first system to distribute data at global scale and support externally-consistent distributed transactions. This paper describes how Spanner is structured, its feature set, the rationale underlying various design decisions, and a novel time(More)
Cultivated peanut (Arachis hypogaea) is an allotetraploid species whose ancestral genomes are most likely derived from the A-genome species, A. duranensis, and the B-genome species, A. ipaensis. The very recent (several millennia) evolutionary origin of A. hypogaea has imposed a bottleneck for allelic and phenotypic diversity within the cultigen. However,(More)
BACKGROUND Short-term adherence to physical activity (PA) in older adults improves psychomotor processing abilities and is associated with greater brain activation. It is not known whether these associations are also significant for longer-term adherence to moderate-intensity activities. METHODS We measured the cross-sectional association of regular(More)
Individuals from families recruited for the Long Life Family Study (LLFS) (n= 4559) were examined and compared to individuals from other cohorts to determine whether the recruitment targeting longevity resulted in a cohort of individuals with better health and function. Other cohorts with similar data included the Cardiovascular Health Study, the Framingham(More)
OBJECTIVE To examine the incidence of peripheral nerve injury within 90 days of a limb trauma diagnosis in patients who have presented to the hospital or outpatient clinic. DESIGN This study is a retrospective, descriptive study that uses the 1998 MarketScan Commercial Claims and Encounters Database (The MEDSTAT Group) to track peripheral nerve injuries(More)
The objective of this study was to assess the quality of the current intakes of fruits and vegetables compared to the Dietary Guidelines for Americans in US children and adolescents and identify factors related to low fruit and vegetable intake. This descriptive study examined differences in fruit and vegetable intakes by age, sex, ethnicity, poverty level,(More)