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Search Results: 1 - 10 of 14230 matches for " Singh Devendra "
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Role of Body Fat and Body Shape on Judgment of Female Health and Attractiveness: An Evolutionary Perspective
Devendra Singh,Dorian Singh
Psychological Topics , 2006,
Abstract: The main aim of this paper is to present an evolutionary perspective for why women’s attractiveness is assigned a great importance in practically all human societies. We present the data that the woman’s body shape, or hourglass figure as defined by the size of waist-to-hip-ratio (WHR), reliably conveys information about a woman’s age, fertility, and health and that systematic variation in women’s WHR invokes systematic changes in attractiveness judgment by participants both in Western and non-Western societies. We also present evidence that attractiveness judgments based on the size of WHR are not artifact of body weight reduction. Then we present cross-cultural and historical data which attest to the universal appeal of WHR. We conclude that the current trend of describing attractiveness solely on the basis of body weight presents an incomplete, and perhaps inaccurate, picture of women’s attractiveness.
Measures of Growth of Entire Solutions of Generalized Axially Symmetric Helmholtz Equation
Devendra Kumar,Rajbir Singh
Journal of Complex Analysis , 2013, DOI: 10.1155/2013/472170
Abstract: For an entire solution of the generalized axially symmetric Helmholtz equation , measures of growth such as lower order and lower type are obtained in terms of the Bessel-Gegenbauer coefficients. Alternative characterizations for order and type are also obtained in terms of the ratios of these successive coefficients. 1. Introduction The solutions of the partial differential equation are called the generalized axially symmetric Helmholtz equation functions (GASHEs). The GASHE function , regular about the origin, has the following Bessel-Gegenbauer series expansion: where , are Bessel functions of first kind, and are Gegenbauer polynomials. A GASHE function is said to be entire if the series (2) converges absolutely and uniformly on the compact subsets of the whole complex plane. For being entire, it is known [1, page 214] that: Now we define Following the usual definitions of order and type of an entire function of a complex variable , the order and type of are defined as Gilbert and Howard [2] have studied the order of an entire GASHE function in terms of the coefficients ’s occurring in the series expansion (2) (see also [1, Theorem 4.5.9]). It has been noticed that the coefficients characterizations for lower order and lower type of have not been studied so far. In this paper, we have made an attempt to bridge this gap. McCoy [3] studied the order and type of an entire function solutions of certain elliptic partial differential equation in terms of series expansion coefficients and approximation errors. Recently, Kumar [4, 5] obtained some bounds on growth parameters of entire function solutions of Helmholtz equation in in terms of Chebyshev polynomial approximation errors in sup-norm. In the present paper, we have considered the different partial differential equation from those of McCoy [3] and Kumar [4, 5] and obtained the growth parameters such as lower order and lower type of entire GASHE function in terms of the coefficients in its Bessel-Gegenbauer series expansion (2). Alternative characterizations for order and type are also obtained in terms of the ratios of these successive coefficients. Our approach and method are different from all these of the above authors. 2. Auxiliary Results In this section, we shall prove some preliminary results which will be used in the sequel. We prove the following lemma. Lemma 1. If is an entire GASHE function, then for all , , and for all , Proof. First we prove right hand inequality. Using the relations in (2), we get Now to prove left hand inequality, we use the orthogonality property of Gegenbauer
Modified Dual Segment Rectangular Dielectric Resonator Antenna Terminated in a Bio-Medium  [PDF]
Ravi Kumar Gangwar, Surya Pal Singh, Devendra Kumar
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2011, DOI: 10.4236/ijcns.2011.46044
Abstract: In this paper, the simulation studies of the radiation characteristics of modified dual segment rectangular dielectric resonator antenna (DSRDRA) in free space and in presence of bio-medium alongwith the absorbed power distribution in a homogenous bio-medium (muscle layer) in direct contact with the proposed antenna are reported at different WiMAX band frequencies. The specific absorption rate (SAR) distributions in muscle layer for different antenna-to-muscle layer spacings are also presented at resonant frequency of antenna in WiMAX bands. The results of return loss, input VSWR and radiation characteristics of proposed antenna in bio-medium are also compared with results in free space. The simulation study has been carried out using CST Microwave Studio software.
Concentration Dependence of Thermodynamic Properties of NaPb Liquid Alloy  [PDF]
Bhrigunandan Prasad Singh, Jitendra Kumar, Indu Shekhar Jha, Devendra Adhikari
World Journal of Condensed Matter Physics (WJCMP) , 2011, DOI: 10.4236/wjcmp.2011.13015
Abstract: We have determined integral excess free energy of mixing, heat of mixing and entropy of mixing of NaPb alloys in molten state at 700 K. The observed asymmetry in the properties of mixing of NaPb alloy in molten state is successfully explained on the basis of regular associated solution model. The theoretical analysis reveals that the pairwise interaction energies between the species depend considerably on temperature.
Synthesis and Characterization of Hydroxyapatite Powder by Sol-Gel Method for Biomedical Application  [PDF]
Khelendra Agrawal, Gurbhinder Singh, Devendra Puri, Satya Prakash
Journal of Minerals and Materials Characterization and Engineering (JMMCE) , 2011, DOI: 10.4236/jmmce.2011.108057
Abstract: Hydroxyapatite (HA) is effectively used as a bioimplant material because it closely resembles bone apatite and exhibits good biocompatibility. This paper describe synthesis technique of HA powder by sol-gel method. The product was sintered twice at two different temperatures 400°C to 750°C to improve its crystallinity. The final powder sintered at two temperatures was characterized by X-ray analysis, Scanning electron microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FT-IR) to reveal its phase content, morphology and types of bond present within it. Thermal analysis (TG–DTA) was carried out to investigate the thermal stability of the powder.
Optimal Waist-to-Hip Ratios in Women Activate Neural Reward Centers in Men
Steven M. Platek,Devendra Singh
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0009042
Abstract: Secondary sexual characteristics convey information about reproductive potential. In the same way that facial symmetry and masculinity, and shoulder-to-hip ratio convey information about reproductive/genetic quality in males, waist-to-hip-ratio (WHR) is a phenotypic cue to fertility, fecundity, neurodevelopmental resources in offspring, and overall health, and is indicative of “good genes” in women. Here, using fMRI, we found that males show activation in brain reward centers in response to naked female bodies when surgically altered to express an optimal (~0.7) WHR with redistributed body fat, but relatively unaffected body mass index (BMI). Relative to presurgical bodies, brain activation to postsurgical bodies was observed in bilateral orbital frontal cortex. While changes in BMI only revealed activation in visual brain substrates, changes in WHR revealed activation in the anterior cingulate cortex, an area associated with reward processing and decision-making. When regressing ratings of attractiveness on brain activation, we observed activation in forebrain substrates, notably the nucleus accumbens, a forebrain nucleus highly involved in reward processes. These findings suggest that an hourglass figure (i.e., an optimal WHR) activates brain centers that drive appetitive sociality/attention toward females that represent the highest-quality reproductive partners. This is the first description of a neural correlate implicating WHR as a putative honest biological signal of female reproductive viability and its effects on men's neurological processing.
Homotopy Perturbation Algorithm Using Laplace Transform for Gas Dynamics Equation
Jagdev Singh , Devendra Kumar , Sushila
Journal of Applied Mathematics, Statistics and Informatics , 2012, DOI: 10.2478/v10294-012-0006-2
Abstract: In this paper, we apply a combined form of the Laplace transform method with the homotopy perturbation method to obtain the solution of nonlinear gas dynamics equation. This method is called the homotopy perturbation transform method (HPTM). This technique finds the solution without any discretization or restrictive assumptions and avoids the round-off errors. The fact that this scheme solves nonlinear problems without using Adomian's polynomials can be considered as a clear advantage of this algorithm over the decomposition method. The results reveal that the homotopy perturbation transform method (HPTM) is very efficient, simple and can be applied to other nonlinear problems.
Employees Adoption of E-Procurement System: An Empirical Study
Inder Singh,Devendra Kumar Punia
International Journal of Managing Information Technology (IJMIT) , 2011,
Abstract: Today, organizations are investing a lot in their IT infrastructure and reengineering their businessprocesses by digitizing firms. If organizational employees will not optimum utilize its IT infrastructure, theproductivity gain reduced enormously. In Uttarakhand e-procurement system implemented by public sectorunder e-governance integrated mission mode projects. So, there is need to find the determinants whichinfluence employee’s adoption and uses of e-procurement systems. This research study assesses theorganizational and individual determinants that influence the use of e-procurement system in Uttarakhandpublic sector. This study provides managers with the valuable information to take intervention programs toachieve greater acceptance and usage of e-procurement system. Data collected for this study by the meansof a survey conducted in Uttarakhand state in 2011. A total 1200 questionnaire forms were distributedpersonally and online to employees using e-procurement system in Uttarakhand.
Employees Adoption of E-Procurement System: An Empirical Study
Inder Singh,Devendra Kumar Punia
Computer Science , 2011,
Abstract: Today, organizations are investing a lot in their IT infrastructure and reengineering their business processes by digitizing firms. If organizational employees will not optimum utilize its IT infrastructure, the productivity gain reduced enormously. In Uttarakhand e-procurement system implemented by public sector under e-governance integrated mission mode projects. So, there is need to find the determinants which influence employee's adoption and uses of e-procurement systems. This research study assesses the organizational and individual determinants that influence the use of e-procurement system in Uttarakhand public sector. This study provides managers with the valuable information to take intervention programs to achieve greater acceptance and usage of e-procurement system. Data collected for this study by the means of a survey conducted in Uttarakhand state in 2011. A total 1200 questionnaire forms were distributed personally and online to employees using e-procurement system in Uttarakhand.
Class Vectors: Embedding representation of Document Classes
Devendra Singh Sachan,Shailesh Kumar
Computer Science , 2015,
Abstract: Distributed representations of words and paragraphs as semantic embeddings in high dimensional data are used across a number of Natural Language Understanding tasks such as retrieval, translation, and classification. In this work, we propose "Class Vectors" - a framework for learning a vector per class in the same embedding space as the word and paragraph embeddings. Similarity between these class vectors and word vectors are used as features to classify a document to a class. In experiment on several sentiment analysis tasks such as Yelp reviews and Amazon electronic product reviews, class vectors have shown better or comparable results in classification while learning very meaningful class embeddings.
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