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匹配条件: “Kumar Dinesh” ,找到相关结果约21406条。
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Bayesian and hierarchical Bayesian analysis of response - time data with concomitant variables  [PDF]
Dinesh Kumar
Journal of Biomedical Science and Engineering (JBiSE) , 2010, DOI: 10.4236/jbise.2010.37095
Abstract: This paper considers the Bayes and hierarchical Bayes approaches for analyzing clinical data on response times with available values for one or more concomitant variables. Response times are assumed to follow simple exponential distributions, with a different parameter for each patient. The analyses are carried out in case of progressive censoring assuming squared error loss function and gamma distribution as priors and hyperpriors. The possibilities of using the methodology in more general situations like dose- response modeling have also been explored. Bayesian estimators derived in this paper are applied to lung cancer data set with concomitant variables.
Effects of Boundary Conditions on Postbuckling Strengths of Composite Laminate with Various Shaped Cutouts under In-Plane Shear  [PDF]
Dinesh Kumar, Shamsher Bahadur Singh
Open Journal of Composite Materials (OJCM) , 2013, DOI: 10.4236/ojcm.2013.32006
Abstract:

Cutouts are often provided in composite structural components for practical reasons. For instance, aircraft components such as wingspar, fuselage and ribs are provided with cutouts for access, inspection, fuel lines and electric lines or to reduce the overall weight. This paper addresses the effect of boundary condition on buckling and postbuckling responses, failure loads, and failure characteristics of composite laminate with various shaped cutouts (i.e., circular, square, diamond, elliptical-vertical and elliptical-horizontal) and having different lay-ups under in-plane shear (positive and negative) load, using finite-element method. The FEM formulation is based on the first order shear deformation theory in conjunction with geometric nonlinearity using von Karman’s assumptions. The 3-D Tsai-Hill criterion is used to predict the failure of a lamina while the onset of delamination is predicted by the interlaminar failure criterion. It is observed that the effect of boundary condition on buckling, first-ply failure and ultimate failure loads of a quasi-isotropic laminate with cutout is more for positive shear load than that for the negative shear load for almost all cutout shapes. It is also noted that under in-plane shear loads postbuckling stiffness of (0/90)4s laminate with circular cutout is maximum, while it is minimum for (45/—45)4s laminate with circular cutout, irrespective of boundary conditions.

A comparison of the risk factors for the coronary artery diseases among the rural and urban male high school students in Vellore district, Tamilnadu: A school based cross sectional study.
Dinesh Kumar
Healthline , 2011,
Abstract: Cardiovascular diseases are very important causes of mortality and morbidity in developed as well as developing countries including India. The coronary artery diseases (CAD) tend to occur earlier in life in Indians and more commonly among urban dwellers.
Statistics in Medical Research
Dinesh Kumar
JK Science : Journal of Medical Education & Research , 2006,
Abstract: Not available
Statistics in Medical Research
Dinesh Kumar
JK Science : Journal of Medical Education & Research , 2006,
Abstract: Not available
ON THE SOLUTION OF GENERALIZED FRACTIONAL KINETIC EQUATIONS
Dinesh Kumar
Journal of Global Research in Mathematical Archives , 2013,
Abstract: In view of the usefulness and a great importance of the kinetic equation in certain astrophysical problems the authors develop a new and further generalized form of the fractional kinetic equation involving Mittag-Leffler function and G-function. This new generalization can be used for the computation of the change of chemical composition in stars like the sun. The manifold generality of the Mittag-Leffler function and G-function is discussed in terms of the solution of the above fractional kinetic equation. Saxena et al. [21, 22] derived the solutions of generalized fractional kinetic equations in terms of Mittaz-Leffler functions by the application of Laplace transform [9, 23]. The present work is extension of earlier work done by Saxena et al. [21, 22], and Chaurasia and Pandey [5].
Reduced Dimensionality (4,3)D-hnCOCANH Experiment: An Efficient Backbone Assignment tool for NMR studies of Proteins
Dinesh Kumar
Physics , 2013, DOI: 10.1007/s10969-013-9161-y
Abstract: Sequence specific resonance assignment and secondary structure determination of proteins form the basis for variety of structural and functional proteomics studies by NMR. In this context, an efficient standalone method for rapid assignment of backbone (1H, 15N, 13Ca and 13C') resonances and secondary structure determination of proteins has been presented here. Compared to currently available strategies used for the purpose, the method employs only a single reduced dimensionality (RD) experiment -(4,3)D-hnCOCANH and exploits the linear combinations of backbone (13Ca and 13C') chemical shifts to achieve a dispersion relatively better compared to those of individual chemical shifts (see the text) for efficient and rapid data analysis. Further, the experiment leads to the spectrum with direct distinction of self (intra-residue) and sequential (inter-residue) carbon correlation peaks; these appear opposite in signs and therefore can easily be discriminated without using an additional complementary experiment. On top of all this, the main strength of the method is its efficient and robust assignment strategy based on: (a) multiple, but unidirectional sequential 15N and 13C correlations (i-->i-1) and (b) the distinctive peak patterns of self and sequential peaks in different [(F1(13C)-F3(1H) and (F2(15N)-F3(1H)] planes of the 3D spectrum which enable ready identification of certain specific triplet sequences (see the text) and thus serve as check points for mapping the stretches of sequentially connected HSQC cross peaks on to the primary sequence for assigning the resonances sequence specifically. Overall, the standalone method presented here will be an important backbone assignment tool for structural and functional proteomics, protein folding, and drug discovery research programs by NMR.
Fatou's No Wandering Domain Conjecture: Sullivan's Proof
Dinesh Kumar
Mathematics , 2011,
Abstract: This dissertation entitled "Fatou's No Wandering Domain Conjecture : Sullivan's Proof" contains a comprehensive study of the Dynamical Partition of the Riemann Sphere and a complementary analysis of the work done by Dennis Sullivan.
On dynamics of semiconjugated entire functions
Dinesh Kumar
Mathematics , 2013,
Abstract: Let $g$ and $h$ be transcendental entire functions and let $f$ be a continuous map of the complex plane into itself with $f\circ g=h\circ f.$ Then $g$ and $h$ are said to be semiconjugated by $f$ and $f$ is called a semiconjugacy. We consider the dynamical properties of semiconjugated transcendental entire functions $g$ and $h$ and provide several conditions under which the semiconjugacy $f$ carries Fatou set of one entire function into the Fatou set of other entire function appearing in the semiconjugation. We have also shown that under certain condition on the growth of entire functions appearing in the semiconjugation, the set of asymptotic values of the derivative of composition of the entire functions is bounded.
Approaching unstructured search from function bilateral symmetry detection - A quantum algorithm
Dinesh Kumar
Computer Science , 2015,
Abstract: Detection of symmetry is vital to problem solving. Most of the problems of computer vision and computer graphics and machine intelligence in general, can be reduced to symmetry detection problem. Unstructured search problem can also be looked upon from symmetry detection point of view. Unstructured search can be thought as searching a binary string satisfying some search condition in an unsorted list of binary strings. In this paper unstructured search problem is reduced to function bilateral symmetry detection problem with polynomial overhead in terms of the size of the input. Keywords: Unstructured Search, Quantum algorithm, Function bilateral symmetry detection, Decision Problem, Quantum Black Box, Solving NP complete problems.
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