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Search Results: 1 - 10 of 13995 matches for " Prempal Singh "
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Chaos Synchronization in Lorenz System  [PDF]
Ayub Khan, Prempal Singh
Applied Mathematics (AM) , 2015, DOI: 10.4236/am.2015.611164
Abstract: In this paper, we analyze chaotic dynamics of nonlinear systems and study chaos synchronization of Lorenz system. We extend our study by discussing other methods available in literature. We propose a theorem followed by a lemma in general and another one for a particular case of Lorenz system. Numerical simulations are given to verify the proposed theorems.
Case Based Medical Diagnosis of Occupational Chronic Lung Diseases From Their Symptoms and Signs
Prempal Singh Tomar, Ranjit Singh, P K Saxena, Jeetu Sharma
International Journal of Biometric and Bioinformatics , 2011,
Abstract: The clinical decision support system using the case based reasoning (CBR) methodology of ArtificialIntelligence (AI) presents a foundation for a new technology of building intelligent computer aideddiagnoses systems. This Technology directly addresses the problems found in the traditional ArtificialIntelligence (AI) techniques, e.g. the problems of knowledge acquisition, remembering, robust andmaintenance. In this paper, we have used the Case Based Reasoning methodology to develop a clinicaldecision support system prototype for supporting diagnosis of occupational lung diseases. 127 caseswere collected for 14 occupational chronic lung diseases, which contains 26 symptoms. After removingthe duplicated cases from the database, the system has trained set of 47 cases for Indian Lung patients.Statistical analysis has been done to determine the importance values of the case features. The retrievalstrategy using nearest-neighbor approaches is investigated. The results indicate that the nearestneighbor approach has shown the encouraging outcome, used as retrieval strategy. A ConsultantPathologist’s interpretation was used to evaluate the system. Results for Sensitivity, Specificity, PositivePrediction Value and the Negative Prediction Value are 95.3%, 92.7%, 98.6% and 81.2% respectively.Thus, the result showed that the system is capable of assisting an inexperience pathologist in makingaccurate, consistent and timely diagnoses, also in the study of diagnostic protocol, education, selfassessment,and quality control. In this paper, clinical decision support system prototype is developedfor supporting diagnosis of occupational lung diseases from their symptoms and signs throughemploying Microsoft Visual Basic .NET 2005 along with Microsoft SQL server 2005 environment withthe advantage of Object Oriented Programming technology
Analysis of Vortex Motion in Porous Media  [PDF]
Beant Singh, Chanpreet Singh
Journal of Electronics Cooling and Thermal Control (JECTC) , 2012, DOI: 10.4236/jectc.2012.22003
Abstract: In vortex motion fluid moves in curve path and the stream lines are curved. When the fluid flows between curved stream line, the centrifugal forces are setup which is counter balanced by pressure forces acting in the radial direction. The vortex motion has two types of curved motion. The first type called free vortex type, the fluid moves due to its own natural effect but energy is not added to fluid when moving in curved path. The second type called forced vortex, in which energy is added to fluid. A two dimensional steady laminar free convective flow of viscous incompressible flow in porous media voids is considered. In this paper the motion of fluid is studied while moving in the porous media. It is studied that the motion of the fluid in the porous media is vortex motion at the low Reynolds’s number, where the motion is laminar motion and the fluid obeys the laws of vortex motion.
Chromohysteroscopy—A new technique for endometrial biopsy in Abnormal Uterine Bleeding (AUB)  [PDF]
Nisha Singh, Bharti Singh
Open Journal of Obstetrics and Gynecology (OJOG) , 2013, DOI: 10.4236/ojog.2013.35A1003

Objective: To evaluate the role of chromohysteroscopy in improving diagnostic accuracy of endometrial biopsy in cases of AUB. Design: Cross sectional interventional study. Materials and Methods: This study was conducted on 60 women with AUB in Dept. of Obst. & Gyne at King George Medical University, Lucknow over a period of one year. All cases underwent diagnostic hysteroscopy followed by chromohysteroscopy using 2% methylene blue dye. Hysteroscopic guided biopsy was taken from stained and unstained areas followed by an endometrial aspiration biopsy from whole uterine cavity. The histopathology results of three samples were compared and analyzed in relation with staining pattern and type of AUB. Data analysis was done on SPSS version 15 of windows 2007. Results: Out of 60 cases, 11cases were found to have non hormonal pathology after chromohysterosopic biopsy. Eight (72.72%) cases were diagnosed by stained endometrial tissue, one (9.09%) by unstained tissue and three (27.27%) by endometrial aspiration. The diagnostic ability of stained tissue biopsy was significantly higher (p = 0.006) than unstained biopsy and endometrial aspiration. Conclusion: Chromohysteroscopy is a simple and effective technique for diagnosing endometrial pathology in cases of AUB.

Evaluation of EO-1 Hyperion Data for Crop Studies in Part of Indo-Gangatic Plains: A Case Study of Meerut District  [PDF]
Davinder Singh, Rajender Singh
Advances in Remote Sensing (ARS) , 2015, DOI: 10.4236/ars.2015.44021
Abstract: Due to the high number of bands in the hyperspectral image, the selection of optimum bands for crop classification is a prerequisite. The Hyperion sensor has 242 spectral bands out of which 143 useable bands were selected. The bands reflected wavelength from 400 to 1000 nm to the VNIR spectrometer and transmitted the band from 900 to 2500 nm to the SWIR spectrometer. Spectral Angle Mapping Classification (SAMC) approach and a multi-scale object oriented method are applied for crop studies. The result obtained from the accuracy assessment by comparing Ground Control Points (GCP) with the help of image spectra shows 78% of overall accuracy. This shows that these data are highly useful in studying the crop diversification.
How Indian CPI and Industrial Production Respond to Global Oil Price Shocks? Regime-Dependent Impulse Responses  [PDF]
Amanjot Singh, Rajdeep Singh
Theoretical Economics Letters (TEL) , 2017, DOI: 10.4236/tel.2017.75102
Abstract: For emerging markets like India, where around 80 percent of the crude requirements are met through imports, it is an imperative task to comprehend impact of global crude oil price shocks on Indian macroeconomic variables. The present study attempts to understand these asymmetric dynamic interactions between global crude oil price shocks and Indian macroeconomic variables by employing Markov switching-Vector Autoregressive (MS-VAR) regime-dependent impulse responses in level forms. The findings hold an important place in the wake of inflation targeting regime adopted by the monetary policy authorities. The findings highlight the existence of two regimes, namely lower and higher oil price variance regimes. The response of industrial production and consumer prices is different towards oil price shocks in different regimes. In the lower oil variance regime, there is negative (positive) relationship observed between crude oil shocks and industrial production (consumer prices). On the other hand, there is a positive equilibrium shift in the industrial production in the higher oil variance regime with cost pushing inflationary pressures in the long run. The findings bear strong implication for the policy makers in their attempt to combat effects of crude oil shocks. As per the findings, the emerging market policy makers should display a cautious approach during higher oil price volatile phases in order to support industrial production and consumer demand.
Erratum to “How Indian CPI and Industrial Production Respond to Global Oil Price Shocks? Regime-Dependent Impulse Responses” [Theoretical Economics Letters 7 (2017) 1511-1531]  [PDF]
Amanjot Singh, Rajdeep Singh
Theoretical Economics Letters (TEL) , 2017, DOI: 10.4236/tel.2017.77148
Abstract: The original online version of this article (Singh, A. and Singh, R. (2017) How Indian CPI and Industrial Production Respond to Global Oil Price Shocks? Regime-Dependent Impulse Responses. Theoretical Economics Letters, 7, 1511-1531. https://doi.org/10.4236/tel.2017.75102) was published without referring the source of Figure 1.
Double Negative Left-Handed Metamaterials for Miniaturization of Rectangular Microstrip Antenna  [PDF]
G. Singh
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2010, DOI: 10.4236/jemaa.2010.26044
Abstract: In this paper, I have explored a significant concept for the miniaturization of microstrip patch antenna configuration by using the double negative (DNG) left-handed Metamaterials, which have dielectric permittivity and magnetic permeability both negative, simultaneously. It is achieved through the concept of phase-compensation by thin slab consist of the double positive (DPS) material, which have dielectric permittivity and magnetic permeability both positive, simultaneously and DNG metamaterials as a substrate of the microstrip patch antenna. By combining the DNG metamaterial slab with the slab made of DPS materials form a cavity resonator whose dispersion relation is independent of the sum of thickness of the slabs filling this cavity but it depends on the ratio of their thicknesses. This cavity constitutes by DPS and DNG material is used as substrate of the microstrip antennas and the DNG material slab is behave as phase compensator.
One Dimensional Solute Transport Originating from a Exponentially Decay Type Point Source Along Unsteady Flow Through Heterogeneous Medium  [PDF]
Premlata Singh
Journal of Water Resource and Protection (JWARP) , 2011, DOI: 10.4236/jwarp.2011.38068
Abstract: One dimensional advection dispersion equation is analytically solved initially in solute free domain by considering uniform exponential decay input condition at origin. Heterogeneous medium of semi infinite extent is considered. Due to heterogeneity velocity and dispersivity coefficient of the advection dispersion equation are considered functions of space variable and time variable. Analytical solution is obtained using Laplace transform technique when dispersivity depended on velocity. The effects of first order decay term and adsorption are studied. The graphical representations are made using MATLAB
Measuring the Performance of Teams in the Indian Premier League  [PDF]
Sanjeet Singh
American Journal of Operations Research (AJOR) , 2011, DOI: 10.4236/ajor.2011.13020
Abstract: In this paper, using the Data Envelopment Analysis (DEA), we have measured the technical efficiency of cricket teams in the Indian Premier League. Taking the data for the 2009 season, the input used by the teams is approached by the total expenses which include players’ wage bill and wage of the support staff and other miscellaneous expenses. Output is measured by the points awarded, net run rate, profit and revenues. Efficiency scores are highly correlated with the performance in the league with a few exception, and when decomposing inefficiency into technical inefficiency and scale inefficiency it can be shown that the largest part of inefficiency can be explained by suboptimal scale of production and ineffficient transformation of inputs into outputs.
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