Results 11 to 20 of about 7,880,129 (337)
Quadratic Variation by Markov Chains [PDF]
SSRN Electronic Journal, 2009 We introduce a novel estimator of the quadratic variation that is based on the the- ory of Markov chains. The estimator is motivated by some general results concerning …ltering contaminated semimartingales. Speci…cally, we show that …ltering can in prin- ciple remove the eects of market microstructure noise in a general framework where little is ...
Hansen, Peter Reinhard, Horel, Guillaume
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Annals of Internal Medicine, 2020 Background: Tests for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) based on reverse transcriptase polymerase chain reaction (RT-PCR) are being used to “rule out” infection among high-risk persons, such as exposed inpatients and health ...
L. Kucirka +4 more
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Modeling Haplotype Block Variation Using Markov Chains [PDF]
Genetics, 2006 Abstract Models of background variation in genomic regions form the basis of linkage disequilibrium mapping methods. In this work we analyze a background model that groups SNPs into haplotype blocks and represents the dependencies between blocks by a Markov chain.
G, Greenspan, D, Geiger
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Modelling the Impact of Travel Time Uncertainty to the Cocoa Supply Chain Network
Jurnal Teknik Sipil, 2018 The uncertainty issue becoming more and more important in term of freight transport, which essentially affect the transport cost. As an essential parameter to construct the product price, the transport cost variations sequentially impact the supply chain
Febri Zukhruf, Russ Bona Frazila
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Bullwhip Effect Study in Leaf Organic Supply Chain
Agraris: Journal of Agribusiness and Rural Development Research, 2021 The mismatch between the availability of vegetables and consumer demand is one of the causes of inefficient supply chains. This study aims to analyze the bullwhip effect on the organic leaf vegetable supply chain at PT Simply Fresh Organic (SFO).
Dwi Apriyani +2 more
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Copper Ions Induce DNA Sequence Variation in Zygotic Embryo Culture-Derived Barley Regenerants
Frontiers in Plant Science, 2021 In vitro tissue culture could be exploited to study cellular mechanisms that induce sequence variation. Altering the metal ion composition of tissue culture medium affects biochemical pathways involved in tissue culture-induced variation. Copper ions are
Renata Orłowska +2 more
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Epigenetic Control of Salmonella enterica O-Antigen Chain Length: A Tradeoff between Virulence and Bacteriophage Resistance. [PDF]
PLoS Genetics, 2015 The Salmonella enterica opvAB operon is a horizontally-acquired locus that undergoes phase variation under Dam methylation control. The OpvA and OpvB proteins form intertwining ribbons in the inner membrane.
Ignacio Cota +5 more
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High Prevalence of CTXM-15 Type Extended-Spectrum Beta-Lactamase Among Clinical Isolates of Klebsiella Pneumoniae [PDF]
Journal of Kerman University of Medical Sciences, 2019 Background: Production of β–lactamases by enterobacteriacea, especially Klebsiella pneumoniae, is one of the emerging health problems in the world. The purpose of this study was to assess the frequency of blaCTX-M15 gene in K.
Leila Ahmadkhan Beygi +2 more
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Chain rules and p-variation [PDF]
Studia Mathematica, 2002 The main result of this paper is a Young-Stieltjes integral representation of the composition \(\phi\circ f\) of a smooth function \(\phi\) that has a derivative satisfying a Lipschitz condition of order \(\alpha\in(0,1]\) and a ``rough'' function \(f\) with bounded \(p\)-variation for some ...
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Frontiers in Plant Science, 2015 Differences have been shown between ryegrass and fescue within the Festulolium subline introgression family for fructan synthesis, metabolism and polymer-size traits.
Joe eGallagher +7 more
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