نتایج جستجو برای: polya pcr
تعداد نتایج: 175977 فیلتر نتایج به سال:
There are two types of master equations in describing nonequilibrium phenomena with memory effect: i the memory function type and ii the nonstationary type. A generalized Polya process is studied within the framework of a non-stationary type master equation approach. For a transitionrate with an arbitrary time-dependent relaxation function, the exact solution of a generalized Polya process is o...
BACKGROUND Small biological samples obtained from biopsies or laser microdissection often do not yield sufficient RNA for successful microarray hybridization; therefore, RNA amplification is performed before microarray experiments. We compared 2 commonly used techniques for RNA amplification. METHODS We compared 2 commercially available methods, Arcturus RiboAmp for in vitro transcription (IV...
In [arXiv:1906.10951 (forthcoming on Advances in Applied Probability),arXiv:2011.05933 (published PLOS ONE)] the authors introduce, study and apply a new variant of Eggenberger-Polya urn, called "Rescaled" Polya which, for suitable choice model parameters, is characterized by following features: (i) "local" reinforcement, i.e. reinforcement mechanism mainly based last observations, (ii) random ...
The Pólya process is an urn scheme arising in the context of the contagion spreading. It exhibits unstable persistence effects. The Friedman urn process is dual to the Pólya one with antipersistent stabilizing effects. It appears in a safety campaign problem. A Pólya-Friedman urn process is investigated with a tuning persistence parameter extrapolating the latter two extreme processes. The stud...
We introduce a simple model which shows non-trivial self organized critical properties. The model describes a system of interacting units, modelled by Polya urns, subject to perturbations and which occasionally break down. Three equivalent formulations-stochastic, quenched and deterministic-are shown to reproduce the same dynamics. Among the novel features of the model are a non-homogeneous sta...
OBJECTIVES The sequencing by the PolyA selection is the most common approach for library preparation. With limited amount or degraded RNA, alternative protocols such as the NuGEN have been developed. However, it is not yet clear how the different library preparations affect the downstream analyses of the broad applications of RNA sequencing. METHODS AND MATERIALS Eight human mammary epithelia...
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