Mathematics, Statistics & Physics: المرسلات الحديثة
السجلات المعروضة 701 -- 720 من 783
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Temperature dependence of the pressure induced monoclinic distortion in the spin S=1/2 Shastry–Sutherland compound SrCu2(BO3)2
( Elsevier Ltd , 2014 , Article)We investigate the monoclinic distortion that occurs at 4.7 GPa at room temperature in the frustrated Shastry-Sutherland model quantum magnet SrCu 2(BO3)2 as a function of pressure and temperature by means of powder and ... -
Asymptotic freedom, dimensional transmutation, and an infrared conformal fixed point for the ? -function potential in one-dimensional relativistic quantum mechanics
( American Physical Society , 2014 , Article)We consider the Schr?dinger equation for a relativistic point particle in an external one-dimensional ?-function potential. Using dimensional regularization, we investigate both bound and scattering states, and we obtain ... -
Embodied water for urban economy: A three-scale input-output analysis for Beijing 2010
( Elsevier , 2015 , Article)The scheme of a three-scale input-output analysis is presented in this study to investigate the water use profile of the urban economy in Beijing. Defined as total water including direct and indirect water, embodied water ... -
Correlated decay of triplet excitations in the shastry-sutherland compound SrCu2 (BO3)2
( American Physical Society , 2014 , Article)The temperature dependence of the gapped triplet excitations (triplons) in the 2D Shastry-Sutherland quantum magnet SrCu2(BO3)2 is studied by means of inelastic neutron scattering. The excitation amplitude rapidly decreases ... -
LQ (optimal) control of hyperbolic PDAEs
( Taylor and Francis Ltd. , 2014 , Article)The linear quadratic control synthesis for a set of coupled first-order hyperbolic partial differential and algebraic equations is presented by using the infinite-dimensional Hilbert state-space representation of the system ... -
A discussion on generalized almost contractions via rational expressions in partially ordered metric spaces
( Springer International Publishing , 2014 , Article)The main purpose of this paper is to give some fixed point results for mappings involving generalized (Formula presented.)-contractions in partially ordered metric spaces. Our results generalize, extend, and unify several ... -
Antiferromagnetism in EuPdGe3
( Elsevier Ltd , 2014 , Article)The results of X-ray diffraction, magnetic susceptibility and magnetization, and 151Eu Mössbauer spectroscopy measurements of polycrystalline EuPdGe3 are reported. EuPdGe3 crystallizes in the BaNiSn3-type tetragonal structure ... -
Fate of accidental symmetries of the relativistic hydrogen atom in a spherical cavity
( Elsevier Masson , 2015 , Article)The non-relativistic hydrogen atom enjoys an accidental SO(4) symmetry, that enlarges the rotational SO(3) symmetry, by extending the angular momentum algebra with the Runge–Lenz vector. In the relativistic hydrogen atom ... -
On computing joint invariants of vector fields
( Elsevier , 2015 , Article)A constructive version of the Frobenius integrability theorem-that can be programmed effectively-is given. This is used in computing invariants of groups of low ranks and recover examples from a recent paper of Boyko etal. (2009). -
K-shell photoionization of O+ and O2+ ions: Experiment and theory
( American Physical Society , 2015 , Article)Absolute cross sections for the single and double K-shell photoionization of carbon like O2+ and nitrogen like O+ ions were measured in the 526–620-eV photon energy range by employing the ion-photon merged-beam technique ... -
Weak and strong convergence theorems without some widely used conditions
( Academic Publications, Ltd. , 2010 , Article)We establish weak (strong) convergence of Ishikawa iterates of two asymptotically (quasi-)nonexpansive maps without any condition on the rate of convergence associated with the two maps. Moreover, our weak convergence ... -
On fixed points of Berinde's contractive mappings in cone metric spaces
( North University of Baia Mare , 2010 , Article)In this paper we establish some common fixed point theorems for two self-mappings satisfying a generalized contractive condition. This result generalizes well known comparable results in the literature. As an application, ... -
Preliminary test estimation in the two parameter exponential distribution based on record values
( Nova Science Publishers , 2010 , Article)We considered estimation of the parameters of the exponential distribution based on record data in the presence of prior information. Preliminary test and shrinkage estimators are developed and their properties are ... -
Two-phase sample size estimation with pre-assignedvariance under normality assumption
( Shiraz University , 2010 , Article)We develop a two phase sampling procedure to determine the sample size necessary to estimate the population mean of a normally distributed random variable and show that the resulting estimator has preassigned variance and ... -
Error analysis associated with uniform Hermite interpolations of bandlimited functions
( Korean Mathematical Society , 2010 , Article)We derive estimates for the truncation, amplitude and jitter type errors associated with Hermite-type interpolations at equidistant nodes of functions in Paley-Wiener spaces. We give pointwise and uniform estimates. Some ... -
Gamma irradiation effects on polymethyl methacrylate
( WILEY-VCH Verlag , 2007 , Article)The effect of gamma-irradiation on the structure of polymethyl methacrylate (PMMA) has been investigated. In this study, the PMMA specimens were gamma-irradiated at doses in the range of 0-1000 kGy and measured by means ... -
Absolute evaluation of ferrous and ferric concentration in Ca amphibole
( WILEY-VCH Verlag , 1982 , Article)Studies are made of M?sshauer absorption of 57Fe in a Ca-amphibole schist sample at room and liquid nitrogen temperatures. The absolute concentration and the recoilless fraction for ferrous and ferric cations are determined ... -
On the preparation of electron sensor using LiRbSO4 samples
( WILEY-VCH Verlag GmbH & Co. , 2005 , Article)The dielectric spectroscopy of metal�metal sulfate LiRbSO4 samples are described with particular emphasis on sensor performance to be used in the field of radiation. The obtained results as the effect of different electron ... -
TESTING SYMMETRY USING A TRIMMED LONGEST RUN STATISTIC
( Blackwell Publishing Asia Pty Ltd. , 2007 , Article)A distribution-free test is proposed for the symmetry of a continuous distribution about a specified median. The test is based on a longest run statistic on the upper portion of the sequence of ordered �centred� observations ... -
On Transformations and Perturbations of Orthogonal r-Frames
( WILEY-VCH Verlag GmbH & Co. , 1993 , Article)A decomposition of Cn into a finite direct sum of orthogonal subspaces can be conveniently represented by its orthogonal projector frame, which is the collection of the corresponding orthogonal projectors. Two such ...
