نتایج جستجو برای: overlap integrals

تعداد نتایج: 62942  

2010
Peter Linz

Infinite integrals involving Bessel functions are recast, by means of an Abel transform, in terms of Fourier integrals. As there are many efficient numerical methods for computing Fourier integrals, this leads to a convenient way of approximating Bessel function integrals.

Journal: :Glasgow Mathematical Journal 1992

2000
Gert de Cooman Bernard De Baets

We introduce and study implicator and coimplicator integrals, and investigate their possible application in defining the possibility and necessity of fuzzy sets. First, the definition and properties of implicators and coimplicators on bounded posets are discussed. Then, in analogy with the theory of seminormed and semiconormed fuzzy integrals, implicator and coimplicator integrals are defined. ...

ژورنال: پژوهش های ریاضی 2015
Arab Ameri , M., Mir Mehrabi , E,

Fractional derivatives and integrals are new concepts of derivatives and integrals of arbitrary order. Partial differential equations whose derivatives can be of fractional order are called fractional partial differential equations (FPDEs). Recently, these equations have received special attention due to their high practical applications. In this paper, we survey a rather general case of FPDE t...

Farzad Ebrahimi Mohammad Hassan Naei

Stress-intensity factors (SIFs) are the most important parameters in fracture mechanics analysis of structures. These parameters are evaluated for a stationary crack in functionally graded plates of arbitrary geometry using a novel Galerkin based mesh-free method. The method involves an element-free Galerkin method (EFGM), where the material properties are smooth functions of spatial coordinate...

2008
T. Gehrmann C. Studerus

The three-loop form factors in massless QCD can be expressed as a linear combination of master integrals. Besides a number of master integrals which factorise into products of one-loop and two-loop integrals, one finds 16 genuine three-loop integrals. Of these, six have the form of a bubble insertion inside a one-loop or two-loop vertex integral. We compute all master integrals with these inser...

Journal: :journal of cardio-thoracic medicine 0
fariba rezaeetalab pulmonologist, lung disease research center, mashhad university of medical sciences, mashhad, iran fariborz rezaeitalab neurologist, department of neurology, mashhad university of medical sciences, mashhad, iran seyed hossein ahmadhosseini pulmonologist, department of pulmonary, mashhad university of medical sciences, mashhad, iran mina akbarirad resident of internal medicine , department of internal medicine, school of medicine, mashhad university of medical sciences mashhad iran fatemeh akbarirad general practitioner, department of internal medicine, mashhad university of medical sciences mashhad ,iran ghazaleh azami resident of internal medicine, department of internal medicine, mashhad university of medical sciences, mashhad, iran

overlap syndrome, which is known as the coexistence of chronic obstructive pulmonary disease (copd) and obstructive sleep apnea (osa), was first defined by flenley. although it can refer to concomitant occurrence of any of the pulmonary diseases and osa, overlap syndrome is commonly considered as the coexistence of osa and copd. this disease has unique adverse health consequences distinct from ...

Journal: :Fuzzy Sets and Systems 1996
Gert de Cooman Etienne E. Kerre

Abstract: In this paper, we introduce seminormed and semiconormed fuzzy integrals associated with confidence measures. These confidence measures have a field of sets as their domain, and a complete lattice as their codomain. In introducing these integrals, the analogy with the classical introduction of Legesgue integrals is explored and exploited. It is amongst other things shown that our integ...

Journal: :Proceedings of the National Academy of Sciences 1933

Journal: :Annals of the Rheumatic Diseases 1990

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