Hindustan University is a university of engineering headquartered in Chennai, India. It was founded in 1985 by K. C. G. Verghese as Hindustan College of Engineering and was granted university status from the University Grants Commission in 2008 as the Hindustan Institute of Technology and Science , which it still uses as a subtitle. Wikipedia.
Prakash A.,Hindustan University
International Journal of Network Security | Year: 2014
Most existing computer and network systems authenticate a user only at the initial login session. This could be a critical security weakness, especially for high-security systems because it enables an impostor to access the system resources with the initial access permission. To address this security flaw, Continuous authentication of the user is necessary, to continuously monitors and authenticates the user throughout the session. Existing continuous authentication schemes primarily uses hard biometric traits, which is inconvenient to the user. To mitigate this problem, a new continuous user authentication scheme is designed to authenticate the user irrespective of their posture in front of the system. The system continuously monitors the user by using soft biometrics (color of user's clothing and facial skin) along with hard biometrics. It automatically registers soft biometric traits every time the user logs in and fuses soft biometric matching with the conventional face biometric authentication.
Jain V.,Defence Institute of Physiology and Allied science DIPAS |
Baitharu I.,Defence Institute of Physiology and Allied science DIPAS |
Prasad D.,Defence Institute of Physiology and Allied science DIPAS |
Ilavazhagan G.,Hindustan University
PLoS ONE | Year: 2013
Adverse environmental conditions such as hypobaric hypoxia (HH) cause memory impairment by affecting cellular machinery leading to neurodegeneration. Providing enriched environment (EE) is found to be beneficial for curing several neurodegenerative disorders. The protective role of EE in preventing HH induced neuronal death has been reported previously but the involved mechanism is still not clearly understood. The present study is an attempt to verify the impact of EE on spatial memory during HH and also to explore the possible role of neurotrophin in EE mediated neuroprotection. Signaling mechanism involved in neuroprotection was also explored. Male Sprague Dawley rats were simulated to HH condition in an Animal Decompression Chamber at an altitude of 25000 feet in standard and enriched cages for 7 days. Spatial memory was assessed through Morris Water Maze. Role of different neurotrophins was explored by gene silencing and inhibitors for their respective receptors. Further, using different blockers signaling pathway was also explored. Finding of the present study suggested that EE prevents HH mediated memory impairment and neurodegeneration. Also brain-derived neurotrophic factor (BDNF) plays a major role in EE mediated neuroprotection and it effectively prevented neurodegeneration by activating PI3K/AKT pathway resulting in GSK3β inactivation which further inhibits apoptosis. Moreover GSK3β phosphorylation and hence its inactivation upregulates CREB phosphorylation which may also accounts for activation of survival machinery in cells and provides neuroprotection. From these observations it can be postulated that EE has a therapeutic potential in amelioration of HH induced memory impairment and neurodegeneration. Hence it may be used as a non invasive and non pharmacological intervention against various neurological disorders. © 2013 Jain et al.
Sathyamurthy R.,Hindustan University |
El-Agouz S.A.,Tanta University |
Dharmaraj V.,Veltech Multitech Dr Rangarajan Dr Sakunthala Engineering College
Desalination | Year: 2015
In this paper, a new model portable solar still is designed, fabricated and tested in the summer conditions of Chennai climatic condition. The phase change material is used in order to divide a single slope portable solar still into evaporating and condensing chambers. The result shows that a maximum efficiency of 14% of the solar still with phase change material is achievable. The accumulated yield and obtained with PCM is 52% more efficient than accumulated yield obtained without PCM. The still continues to produce fresh water after the sunset. More than 34% of total water production is pertaining to this time. © 2015 Elsevier B.V.
Jeyapoovan T.,Hindustan University |
Murugan M.,B.S. Abdur Rahman University
Measurement: Journal of the International Measurement Confederation | Year: 2013
Surface roughness is an important factor in determining the satisfactory functioning of the machined components. Conventionally the surface roughness measurement is done with a stylus instrument. Since this measurement process is intrusive and is of contact type, it is not suitable for online measurements. There is a growing need for a reliable, online and non-contact method for surface measurements. Over the last few years, advances in image processing techniques have provided a basis for developing image-based surface roughness measuring techniques. Based upon the vision system, novel methods used for human identification in biometrics are used in the present work for characterization of machined surfaces. The Euclidean and Hamming distances of the surface images are used for surface recognition. Using a CCD camera and polychromatic light source, low-incident-angle images of machined surfaces with different surface roughness values were captured. A signal vector was generated from image pixel intensity and was processed using MATLAB software. A database of reference images with known surface roughness values was established. The Euclidean and Hamming distances between any new test surface and the reference images in the database were used to predict the surface roughness of the test surface. © 2013 Elsevier Ltd.
Kamalakkannan K.,Hindustan University
SAE Technical Papers | Year: 2013
A semi-active suspension system (SASS) uses a damper whose damping rates can be varied automatically, by the influence of an electromagnet, in real-time according to the continuously changing road conditions. The method by which the damper is controlled is one of the crucial factors that ultimately determine the success or failure of it. In order to achieve success; the rear suspension damper is controlled, based on the inputs from sensors placed at front part of a vehicle, using H Skyhook Input Based control. The test vehicle is an All Terrain Vehicle (ATV) used in the standard of BAJASAE. This study includes a suspension system comprising of two controllable magneto-rheological dampers, associated sensors and controller. This paper reports the simulation result and performance of input based control of SASS fitted in a full car model. Copyright © 2013 SAE International.