Hussain A.,Indian Institute of Technology Roorkee |
Ahmad Z.,Indian Institute of Technology Roorkee |
Asawa G.L.,GLA University
Agricultural Water Management | Year: 2011
Side orifices are widely used in irrigation and environmental engineering to spill or divert water from a channel. Flow characteristic of sharp-crested rectangular orifices under free flow condition in open channels is studied in the present paper. Existing discharge equations are checked for their accuracy using the data collected in the present study and available data in the literature and a new discharge equation has been proposed. The coefficient of discharge mainly depends on the approach flow Froude number and ratio of the size of orifice and bed width of the channel. Relationships for the coefficient of discharge, treating the orifice as large and small were developed. The computed discharges using these relationships were within ±5% of the observed ones. Measurement of three-dimensional velocities and visualisation of streamlines in a horizontal plane at the centerline of the orifice indicates that for the flow of low Froude number, almost all the streamlines divert towards the orifice. However, in the case of high Froude number flows, only those streamlines which are close to the side orifice are diverted towards the orifice. The opposite side of the boundary has significant effect on the diverted discharge of low Froude number compared to the flow of high Froude number. Circular orifice has been found to be more efficient compared to the rectangular orifice of the same opening area. © 2011 Elsevier B.V.
Jalal A.S.,GLA University |
Singh V.,Indian Institute of Information Technology Allahabad
Informatica (Slovenia) | Year: 2012
There is a broad range of applications of visual object tracking that motivate the interests of researchers worldwide. These include video surveillance to know the suspicious activity, sport video analysis to extract highlights, traffic monitoring to analyse traffic flow and human computer interface to assist visually challenged people. In general, the processing framework of object tracking in dynamic scenes includes the following stages: segmentation and modelling of interesting moving object, predicting possible location of candidate object in each frame, localization of object in each frame, generally through a similarity measure in feature space. However, tracking an object in a complex environment is a challenging task. This survey discusses some of the core concepts used in object tracking and present a comprehensive survey of efforts in the past to address this problem. We have also explored wavelet domain and found that it has great potential in object tracking as it provides a rich and robust representation of an object. Povzetek: Podan je pregled metod vizualnega sledenja objektov .
Sepehri A.,Shahid Bahonar University of Kerman |
Rahaman F.,Jadavpur University |
Pradhan A.,GLA University |
Sardar I.H.,Jadavpur University
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Year: 2015
Recently, Padmanabhan [. arXiv:1206.4916 [hep-th]] argued that the expansion rate of the universe can be thought of as the emergence of space as cosmic time progresses and is related to the difference between the surface degrees of freedom on the holographic horizon and the bulk degrees of freedom inside. The main question arises as to what is the origin of emergence of space in 4D universe. We answer this question in BIonic system. The BIon is a configuration in flat space of a D-brane and a parallel anti-D-brane connected by a thin shell wormhole with F-string charge. We propose a new model that allows that all degrees of freedom inside and outside the universe are controlled by the evolutions of BIon in extra dimension and tend to degrees of freedom of black F-string in string theory or black M2-brane in M-theory. © 2014 The Authors.
Pandey P.,GLA University
International Conference on Advanced Computing and Communication Technologies, ACCT | Year: 2013
One of the most valuable asset in any software industry is the correct estimation of effort and hence cost estimation of the software to be developed by them. Because of the highly dynamic nature of the Software development, it becomes more and more difficult to get a correct software effort estimation and software cost estimation, which is one of the most important factor which makes software more competitive and is essential for controlling Software Development Cost. Software Cost Estimation is one of the challenging managerial activity, because values of many of the variables are not known and not easy to predict at an early stage of Software Development. An ideal Software Cost Estimation Model should provide ample confidence, precision and accuracy from its predictions. In this paper, we have performed an analysis of most of the algorithmic techniques which has been developed till now for Software Cost Estimation. We have also tried to analyze the advantages and shortcomings of every technique. © 2013 IEEE.
van Rijsbergen N.,GLA University |
Jaworska K.,University of Glasgow |
Rousselet G.A.,University of Glasgow |
Schyns P.G.,University of Glasgow
Current biology : CB | Year: 2014
In an increasingly aging society, age has become a foundational dimension of social grouping broadly targeted by advertising and governmental policies. However, perception of old age induces mainly strong negative social biases. To characterize their cognitive and perceptual foundations, we modeled the mental representations of faces associated with three age groups (young age, middle age, and old age), in younger and older participants. We then validated the accuracy of each mental representation of age with independent validators. Using statistical image processing, we identified the features of mental representations that predict perceived age. Here, we show that whereas younger people mentally dichotomize aging into two groups, themselves (younger) and others (older), older participants faithfully represent the features of young age, middle age, and old age, with richer representations of all considered ages. Our results demonstrate that, contrary to popular public belief, older minds depict socially relevant information more accurately than their younger counterparts. Copyright © 2014 The Authors. Published by Elsevier Inc. All rights reserved.