نتایج جستجو برای: ase
تعداد نتایج: 2441 فیلتر نتایج به سال:
Academic self-efficacy (ASE) refers to a student’s global belief in his/her ability master the various academic challenges at university and is an essential antecedent of wellbeing performance. The five-item General Self-Efficacy Scale (GASE) showed promise as short concise measure for overall ASE. However, its validity reliability outside Scandinavia limited. Therefore, this paper aimed invest...
A phase sensitive amplification (PSA) regeneration model for M-ary shift keying (MPSK) signals with amplified spontaneous emission (ASE) noise based on the interference between signal and its (M+1)th harmonic is proposed. Compared existing models different combinations of harmonics, new optimal in theory to deal MPSK degraded by ASE noise. The QPSK format taken as an example simulation verifica...
BACKGROUND Left ventricular diastolic dysfunction is suggested to be associated with higher mortality in severe sepsis and septic shock, yet the methods of diagnosis described in the literature are often inconsistent. The recently published 2016 American Society of Echocardiography and European Association of Cardiovascular Imaging (ASE/EACVI) guidelines offer the opportunity to apply a simple ...
Herein we report the formation of multi-layered arrays of vertically aligned and close packed semiconductor nanorods in perfect registry at a substrate using electric field assisted assembly. The collective properties of these CdSexS1-x nanorod emitters are harnessed by demonstrating a relatively low amplified spontaneous emission (ASE) threshold and a high net optical gain at medium pump inten...
We investigated the statistics of random lasing modes in colloidal solutions with local pumping. The ensemble-averaged spectral correlation function of single-shot emission spectra exhibits regular oscillations. The statistical distribution of laser emission intensity follows a power-law decay, in comparison with an exponential decay of the statistical distribution of amplified spontaneous emis...
We have constructed a cw dye master oscillator/dye pulse-amplifier system that generates 4 ns, 100 mJ pulses with a repetition rate of 30 Hz. The output pulse has a bandwidth of 275 MHz. Backward-stimulated Brillouin scattering is used to control the growth of amplified spontaneous emission ~ASE!. The content of ASE in the final output is under our detection limit (,10) for the entire tuning ra...
The atomic simulation environment (ASE) is a software package written in the Python programming language with the aim of setting up, steering, and analyzing atomistic simulations. In ASE, tasks are fully scripted in Python. The powerful syntax of Python combined with the NumPy array library make it possible to perform very complex simulation tasks. For example, a sequence of calculations may be...
Fluorogenic 6-acylamino-4-methylumbelliferyl-/3-D-glucosides were found to be poor substrates for the three known human /3-glucosidases, i.e., lysosomal and non-lysosomal glucocerebrosidases and cytosolic broad-specificity /3-glucosidase. However, homogenates of human tissues and human cell types showed significant enzymatic hydrolysis of 6-ethanoylamino-4-methylumbelliferyl-/3-D-glucoside (EMG...
oncogenic RNA viruses. It has also been reported (24) that single-stranded polyribonucleotides at very low concentrations inhibit DNA polymerase of Rauscher leukemia virus. In this report, we present data that show a way in which RNA indirectly affects DNA synthesis. These data show that RNA markedly inhibits ribonucleotide reducÃ-asefrom Ehrlich ascites tumor cells, at concentrations which cou...
Self-efficacy relates to an individual's perception of their capabilities. It has a clear self-evaluative dimension leading to high or low perceived self-efficacy. Individual differences in perceived self-efficacy have been shown to be better predictors of performance than previous achievement or ability and seem particularly important when individuals face adversity. The study investigated the...
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