Chemical purity of RNA samples is important for high-precision studies of RNA folding and catalytic behavior, but photodamage accrued during ultraviolet (UV) shadowing steps of sample preparation can reduce this purity. Here, we report the quantitation of UV-induced damage by using reverse transcription and single-nucleotide-resolution capillary electrophoresis. We found photolesions in a dozen...

Speech shadowing is a dual-task paradigm that could reveal certain features of speech processing, where the shadowing latency between the onsets of heard and reproduced speech has often been a key investigation tool. The present study investigated the shadowing latencies in native Japanese adults who do (AWS) and do not stutter (AWNS), with relevant analysis of speech errors. Fifteen AWS and fo...

The purpose of this study was to characterize the average dental school applicant's participation in four nonacademic areas: shadowing, extracurricular activities, volunteer experiences, and research. Demographic, academic, and nonacademic information was compared for 12 percent of all applicants to U.S. dental schools in 2005. Applicants had an average GPA of 3.23 and DAT Academic Average of 1...

Two-ray ground reflection model has been widely used as the propagation model to investigate the performance of an ad hoc network. But two-ray model is too simple to represent a real world network. A more realistic model namely shadowing propagation model has been used in this investigation. Under shadowing propagation model, a mobile node may receive a packet at a signal level that is below a ...

© 2009 ETRI Journal, Volume 31, Number 5, October 2009 The detrimental effect of short-term fading and shadowing can be mitigated using microdiversity and macrodiversity systems, respectively. In this paper, implementation of selection combining at both micro and macro levels to improve system performance is analyzed. An assessment of the performance of such a system is carried out by consideri...

Various shadowing aspects of nuclear parton distributions are discussed in a partonmodel framework. We explain existing x dependent data of F 2 /F 2 , then the model is applied to a flavor asymmetry ū − d̄ in a nucleus, to shadowing in valence-quark distributions, and to nuclear dependence of Q evolution. First, we find that a finite nuclear ū−d̄ distribution could be possible due to nuclear inte...

The Q 2 dependence of the ratios of the cross sections of deep inelastic lepton–nucleus scattering is studied in the framework of leading twist, lowest order perturbative QCD. The log Q 2 slope of the ratio F Sn 2 /F C 2 is computed by using the DGLAP evolution equations, and shown to be sensitive to the nuclear gluon distribution functions. Four different parametrizations for the nuclear effec...

The effect of correlated lognormal shadowing on the average probability of error performance of narrow-band wireless sensor network systems with microand macrodiversity reception in a Rician fading channel is investigated by considering a constant correlation model for the shadowed signals at the fusion center or sensor sink of wireless sensor network with radio channel. The performance degrada...

Dynamic thread duplication is a known redundancy technique for multi-cores. The approach duplicates a thread under observation for some time period and compares the signatures of the two threads to detect errors. Hybrid multi-cores, typically implemented on platform FPGAs, enable the unique option of running the thread under observation and its copy in different modalities, i.e., software and h...