Results 71 to 80 of about 1,539,341 (287)
The Thin-Wall Approximation in Vacuum Decay: a Lemma
, 2018 The 'thin-wall approximation' gives a simple estimate of the decay rate of an unstable quantum field. Unfortunately, the approximation is uncontrolled.
Brown, Adam R.
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On the convergence rates of Legendre approximation [PDF]
Mathematics of Computation, 2011 Expansions of suitable univariate functions in infinite or truncated series of Legendre polynomials are considered in this article. Under analyticity conditions or conditions on the continuity of the approximand and its derivatives, upper bounds on the coefficients in these series are established.
Wang, Haiyong, Xiang, Shuhuang
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Bone tumours present significant challenges for affected patients, as multimodal therapy often leads to prolonged physical limitations. This is particularly critical during childhood and adolescence, as it can negatively impact physiological development and psychosocial resilience.
Jennifer Queisser +5 more
wiley +1 more source
On the rate of convergence of Baskakov-Kantorovich-Bézier operators for bounded variation functions
Journal of Numerical Analysis and Approximation Theory, 2002 In the present paper we introduce Baskakov-Kantorovich-Bézier operators and study their rate of convergence for functions of bounded variation.
Ulrich Abel, Vijay Gupta, Mircea Ivan
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Polarization of the electron and positron produced in combined Coulomb and strong laser fields
, 2010 The process of $e^+e^-$ production in the superposition of a Coulomb and a strong laser field is considered. The pair production rate integrated over the momentum and summed over the spin projections of one of the particles is derived exactly in the ...
A. Di Piazza +17 more
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Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou +10 more
wiley +1 more source
Approximation Properties of Certain Summation Integral Type Operators
Demonstratio Mathematica, 2015 In the present paper, we study approximation properties of a family of linear positive operators and establish direct results, asymptotic formula, rate of convergence, weighted approximation theorem, inverse theorem and better approximation for this ...
Patel P., Mishra Vishnu Narayan
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Sphaleron-Like Processes in a Realistic Heat Bath
, 1993 We measure the diffusion rate of Chern-Simons number in the (1+1)-dimensional Abelian Higgs model interacting with a realistic heat bath for temperatures between 1/13 and 2/3 times the sphaleron energy. It is found that the measured rate is close to that
A. Krasnitz +14 more
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Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Chronic kidney disease is a growing public health problem worldwide, and the number of patients requiring renal replacement therapy is steadily increasing. Türkiye has experienced a similar rise in both the incidence and prevalence of renal replacement therapy over the past decades; however, national‐level projections of future ...
Arzu Akgül +2 more
wiley +1 more source
Approximation by (p,q) $(p,q)$-Lupaş–Schurer–Kantorovich operators
Journal of Inequalities and Applications, 2018 In the current paper, we examine the (p,q) $(p,q)$-analogue of Kantorovich type Lupaş–Schurer operators with the help of (p,q) $(p,q)$-Jackson integral.
Kadir Kanat, Melek Sofyalıoğlu
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