نتایج جستجو برای: central series

تعداد نتایج: 803874  

2011
Khristo N. Boyadzhiev

We present several generating functions for sequences involving the central binomial coefficients and the harmonic numbers. In particular, we obtain the generating functions for the sequences ( 2n n ) Hn, ( 2n n ) 1 nHn, ( 2n n ) 1 n+1Hn , and ( 2n n ) n m. The technique is based on a special Euler-type series transformation formula.

ABSTRACT Fungal infections of the central nervous system (CNS) usually present as subacute meningitis or intracranial space occupying lesion with mass effect on surrounding structures and consequent focal neurological deficits. Intracranial fungal granulomas are often misdiagnosed clinically and radiologically as neoplastic lesions.  Biopsy of the lesion is the only reliable technique to estab...

In order to estimate the production function besides productivity and economic growth, the time series of capital stock is required. Time-series that available for capital stock is not so reliable because of Variations in suggested methods and also difficulty in the calculation of this variable. The continuously inventory method (CIM) has been more attention, among the existing methods. We impr...

Mosayeb Pahlavani Reza Roshan

This paper attempts to compare the forecasting performance of the ARIMA model and hybrid ARMA-GARCH Models by using daily data of the Iran’s exchange rate against the U.S. Dollar (IRR/USD) for the period of 20 March 2014 to 20 June 2015. The period of 20 March 2014 to 19 April 2015 was used to build the model while remaining data were used to do out of sample forecasting and check the forecasti...

Journal: Desert 2012
A. Salajegheh A.R. Keshtkar M. Najafi Hajivar

Statistical frequency analysis is the most common procedure for the analysis of flood data at a gauged location thatin first step it is needed to select a model to represent the population. Among them, the central moment has been themost common and widely used, and with the using of computers, the application of the maximum likelihood hasincreased. This research was carried out in order to reco...

رضوی, سید محمدحسین, نصرآبادی, محسن,

The study area is situated in the west of Soltan Abad prom NE Sabzevar (Razavi Khorasan province). There is an exposure of metamorphic complex that contains greenschist, blueschist, amphibolite and eclogite (?) facieses rocks. Gneissic body is located in the middle part of this complex (Koh-e-Chili). Protolith and foliation intensity are variable in this body. Field evidences, whole rock geoche...

Journal: :algebraic structures and their applications 2014
habib sharif

let $k$ be a field of characteristic$p>0$, $k[[x]]$, the ring of formal power series over $ k$,$k((x))$, the quotient field of $ k[[x]]$, and $ k(x)$ the fieldof rational functions over $k$. we shall give somecharacterizations of an algebraic function $fin k((x))$ over $k$.let $l$ be a field of characteristic zero. the power series $finl[[x]]$ is called differentially algebraic, if it satisfies...

Journal: :acta medica iranica 0
masoud poureisa neurosciences research center, department of radiology, radiotherapy and nuclear medicine, tabriz medical science university, tabriz, iran. mohammad hossein daghighi department of radiology, radiotherapy and nuclear medicine, tabriz university of medical sciences, tabriz, iran. ramin mazaheri-khameneh department of clinical science, faculty of veterinary medicine, urmia university, urmia, iran. ali ghadirpour department of radiology, radiotherapy and nuclear medicine, tabriz university of medical sciences, tabriz, iran.

we present 16 years old girl with primary breast lymphoma involving the both breasts simultaneously and co-incidence of central nervous system (cns) involvement which originated from the breast, in addition to evidence of lymphoma in multi-organ such as skin, mediastinum and some abdominal viscera. bilaterality has been observed in some series, but reports are few and series are often very smal...

Journal: :international journal of business and development studies 0

this paper attempts to compare the forecasting performance of the arima model and hybrid arma-garch models by using daily data of the iran’s exchange rate against the u.s. dollar (irr/usd) for the period of 20 march 2014 to 20 june 2015. the period of 20 march 2014 to 19 april 2015 was used to build the model while remaining data were used to do out of sample forecasting and check the forecasti...

Abstract The ray series method may be generalized using a ray centered coordinate system for general 3D-heterogeneous media. This method is useful for Amplitude Versus Offset (AVO) seismic modeling, seismic analysis, interpretational purposes, and comparison with seismic field observations.For each central ray (constant ray parameter), the kinematic (the eikonal) and dynamic ray tracing system ...

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