نتایج جستجو برای: tobins q ratio

تعداد نتایج: 616193  

2004
Michael Lexa

This report contains a list of some of the more prominent properties and theorems concerning the Kullback-Leibler (KL) discrimination distance. A brief discussion is also provided indicating the type of problems in which the KL distance has been applied. References are provided for the reader’s convenience. 1 Definition For two continuous density functions f1(x), f2(x) the Kullback-Leibler (KL)...

2007
G. Jacobs A. Assefa

Introduction: A widely used figure of merit in radiofrequency (RF) coil construction and testing is the Q or ‘quality factor.’ Q is a measure of the spectral selectivity of the coil, Q = f0/Δf , where f0 and Δf are the central frequency and bandwidth (FWHM) of the resonance, respectively. A narrow bandwidth (high Q) excludes more noise and results in better signal to noise ratio. Q is also rela...

Journal: :Journal of Combinatorial Theory, Series A 2016

2008
Anthony J. Remijan Stefanie N. Milam Maria Womack A. J. Apponi L. M. Ziurys Susan Wyckoff M. F. A’Hearn Imke de Pater J. R. Forster D. N. Friedel Patrick Palmer L. E. Snyder J. M. Veal L. M. Woodney M. C. H. Wright

We present an interferometric and single-dish study of small organic species towardComets C/1995O1 (Hale-Bopp) and C/2002 T7 (LINEAR) using the BIMA interferometer at 3 mm and the ARO 12m telescope at 2 mm. For Comet Hale-Bopp, both the single-dish and interferometer observations of CH3OH indicate an excitation temperature of 105 5 K and an average production rate ratio Q(CH3OH)/Q(H2O) 1:3% at ...

Journal: :Statistics in medicine 2002
S D Walter

The summary receiver operating characteristic (SROC) curve has been recommended to represent the performance of a diagnostic test, based on data from a meta-analysis. However, little is known about the basic properties of the SROC curve or its estimate. In this paper, the position of the SROC curve is characterized in terms of the overall diagnostic odds ratio and the magnitude of inter-study h...

1998
Anatoly A. Kilbas Megumi Saigo

The paper is devoted to study the H-function defined by the Mellin-Barnes integral H p,q (z) = 1 2πi ∫ L H m,n p,q (s)z ds, where the function H p,q (s) is a certain ratio of products of Gamma functions with the argument s and the contour L is specially chosen. The conditions for the existence of Hm,n p,q (z) are discussed and explicit power and power-logarithmic series expansions of Hm,n p,q (...

1995
W. Melnitchouk A. W. Thomas

We reexamine the predictions of a two-phase model of shadowing in nuclear deep-inelastic scattering in light of new NMC data on the x, A and Q 2 dependence of the ratios of structure functions. The model, which combines vector meson dominance at low Q 2 with diffractive Pomeron exchange for large Q 2 , agrees with the observed small, but non-zero, slopes in log Q 2 , which indicate the importan...

2004
Tsuneo Uematsu

We discuss target mass effects in the polarized virtual photon structure functions gγ 1 (x, Q, P ), gγ 2 (x, Q, P ) for the kinematic region Λ ≪ P 2 ≪ Q, where −Q(−P ) is the mass squared of the probe (target) photon. We obtain the expressions for the structure functions in closed form by inverting the Nachtmann moments for the twist-2 and twist-3 operators. Numerical analysis shows that target...

Journal: :auditory and vestibular research 0
javad hanilou department of audiology, school of rehabilitation, tehran university of medical sciences, tehran, iran jamileh fatahi department of audiology, school of rehabilitation, tehran university of medical sciences, tehran, iran and department of audiology, school of rehabilitation sciences, iran university of medical sciences, tehran, iran ali akbar tahaei department of audiology, school of rehabilitation sciences, iran university of medical sciences, tehran, iran shohreh jalaie biostatistics, school of rehabilitation, tehran university of medical sciences, tehran, iran

background and aim : the quick speech in noise (q-sin) test have been designed to evalu­ate individuals’ ability to recognize speech in noise. this study established to evaluate the test-retest reliability and equivalency of the five test lists of the persian q-sin test in subjects with sensory hearing loss (shl) and normal hearing individuals. methods : this cross-sectional study was per­forme...

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