Bangalore, India

Dayananda Sagar College of Engineering , started in 1979, was founded by Sri R Dayananda Sagar and is run by the Mahatma Gandhi Vidya Peeta Trust. It is on 28 acres of land on a hillock in Kumaraswamy Layout, Bangalore South. Research programmes sponsored by AICTE, AR&DB, KSCST are undertaken. The college organizes seminars, workshops, teaching talks, sports and extracurricular activities. With 1850 systems, student information system and several digital classrooms, it was one of the first education centers to go WiFi in the country. Wikipedia.


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Shanmukha Sundar K.,Dayananda Sagar College of Engineering
International Journal of Electrical Power and Energy Systems | Year: 2012

This paper focuses on the optimal power flow solution and enhancement of system performance without sacrificing the security of the system via optimal location and optimal sizing of Thyristor Controlled Series Compensator (TCSC) when the system is operating under normal and network contingency conditions. The paper presents a secured optimal power flow solution by integrating TCSC with the optimization model developed under normal and contingency cases. The optimization model developed in this paper is solved by using linear programming method. New indices called Thermal Capacity Index (TCI) and Contingency Capacity Index (CCI) are proposed for placing the TCSC at appropriate location under normal and network contingency conditions respectively. Once the location to install TCSC is identified, the optimal setting of TCSC is determined through the software code written in MATLAB. The proposed approach is carried out on 6-bus, IEEE 14-bus and IEEE 118-bus test systems and the simulation results are presented to validate the proposed method. © 2011 Elsevier Ltd. All rights reserved.


Gayathri A.G.,Dayananda Sagar College of Engineering | Joseph C.M.,Dayananda Sagar College of Engineering
Materials Today: Proceedings | Year: 2015

In this paper, the effect of deposition rates on the vacuum deposited pentacene (C22H14) thin films on ITO coated glass substrate for use as write once read many (WORM) memory devices are reported. IV characteristics of pentacene devices deposited for different deposition rates of 5Å/s, 10Å/s and 20Å/s were studied. Results revealed that the ON/OFF ratio was more for the device with active material deposited at a higher deposition rate of 20Å/s. This device showed a stable switching with an ON/OFF current ratio as high as nearly 108 and a retention time of more than 5x104s with a switching threshold voltage of 1.1V. The irreversible switching of all the devices makes it suitable for a write once read many memory device applications. The structural and morphological studies of these pentacene thin films on glass substrates were also done and the dependence of the grain size of the films with deposition rate is also reported. © 2015 Elsevier Ltd.


Aruna P.,Dayananda Sagar College of Engineering | Joseph C.M.,Dayananda Sagar College of Engineering
Materials Today: Proceedings | Year: 2015

Photoelectrical properties of fullerene (C60) doped spin coated thin films of Poly (3-hexylthiophene 2,5 diyl) (P3HT) and its blend with Phenyl-C61Butyric-Acid-Methyl-Ester (PCBM) were studied. Photoresponse characteristics were studied by noting the resistance variation with exposure to illumination, as a function of time. Decrease of resistance to the exposure of light was observed in both P3HT and its blend films indicating their high sensitivity to light. On/off ratio of resistance was 150 for P3HT devices and relative current change (photoresponse), δIrep= Ilight/Idark was a high value of 166 in P3HT devices. P3HT devices showed a periodic and stable response characteristics compared to the P3HT blend devices for several sensing cycles of photoelectrical studies. © 2015 Elsevier Ltd.


Manjunath S.,Dayananda Sagar College of Engineering | Rangarajan L.,University of Mysore
Journal of Convergence Information Technology | Year: 2011

Micro array is a powerful Technology, that is useful in analyzing expression levels of thousands of genes simultaneously, which is important in biological and medical investigation. Micro array image analysis consists of three stages: gridding, segmentation of spots and finally Quantification. Segmentation is a process of separating the foreground signal from the background and it is a crucial stage in the analysis. In this paper we propose a method for performing accurate spot segmentation of noisy micro array images. The k-means classification method is refined, so that classification of foreground / background is accurate which works best even for noisy spots, weakly expressed spots and spots with artifacts. Comparison of the proposed method with existing methods shows promising results.


Aithal M.G.S.,Dayananda Sagar College of Engineering | Rajeswari N.,Dayananda Sagar College of Engineering
Journal of Genetics | Year: 2013

The Notch signalling pathway is an evolutionarily conserved cell signalling pathway involved in the development of organisms as diverse as humans and fruit flies. It plays a pivotal role in cell fate determination. Dysregulated Notch signalling is oncogenic, inhibits apoptosis and promotes cell survival. Abnormal Notch signalling is seen in many cancers like T-cell acute lymphoblastic leukaemia, acute myeloid leukaemia and cancers of the breast, cervix, colon, pancreas, skin and brain. Inhibition of Notch signalling leads to growth arrest and differentiation in those cells in which Notch pathway is activated and this represents a new target for cancer therapy. Cancer develops from genome defects, including both genetic and epigenetic alterations. Epigenetics deals with heritable changes in gene function that occur without a change in the DNA sequence. Among various epigenetic alterations such as acetylation, phosphorylation, ubiquitylation and sumoylation, promoter region methylation is considered as an important component in cancer development. Epigenetic alterations can be used as biomarkers in screening, detection, diagnosis, staging and risk stratification of various cancers. DNA methylation can be therapeutically reversed and demethylating drugs have proven to be promising in cancer treatment. This review focusses on the methylation status of genes in Notch signalling pathway from various cancers and how this epigenetic alteration can be used as a biomarker for cancer diagnosis and subsequent treatment. © 2013 Indian Academy of Sciences.


Mohanchandra K.,Dayananda Sagar College of Engineering
Recent and Emerging Trends in Computer and Computational Sciences, RETCOMP 2015 | Year: 2015

In the recent years, especially during the last decade electroencephalography (EEG) based brain computer interface (BCI) have become a prevailing study of neuroscience, machine learning and rehabilitation. A BCI provides an arena for a human brain to communicate with a computer directly without the normal neurophysiologic pathways. The electrical signals of the brain, with their fast responsivity with cognitive processes are most suitable as non-motor control mediation between the human and a computer. This can serve as a communication and control channel for various applications. One of the most intriguing uses of EEG is in forensic investigation, used as a tool in lie detection. Lie detection technology has been applied increasingly to investigate and solve criminal cases. Though the contributions of neurobiological research to forensic technology remain largely hypothetical, the evidences appear promising and further research is both feasible and warranted. The brain based lie detection may veritably give solution to many complicated investigation. This paper explores the evolvement of lie detection technology, their working principles, the latest development, and the prospect of their application in forensic science. © 2015 IEEE.


Raghavendra H.S.,Dayananda Sagar College of Engineering
Proceedings of the 2015 IEEE International Conference on Power and Advanced Control Engineering, ICPACE 2015 | Year: 2015

This paper presents the multi-input renewable source inverter which is interlinked with AC grid link. Photovoltaic and fuel cell energy sources are connected to the current fed half bridge converters, which perform soft switching action without any additional snubber circuit. Series connection of the HF transformer secondary terminals provides further extension of energy sources converters. A simple H-bridge inverter is being used at final stage which is linked to grid line. Analysis and design of the proposed multi-input renewable source inverter has been presented. Simulation analysis is done for 200watts inverter using simulation tool PSIM 9.0.3 to verify the design considerations and analysis. © 2015 IEEE.


Mohan S.,Dayananda Sagar College of Engineering | Ravishankar M.,Dayananda Sagar College of Engineering
Communications in Computer and Information Science | Year: 2013

Optimal Contrast enhancement for detection of masses and micro calcification of mammogram images using Contrast Limited Adaptive Histogram Equalization (CLAHE) based on local contrast modification (LCM) is presented in this paper. The LCM-CLAHE is proposed to highlight the finer hidden details in mammogram images and to adjust the level of contrast enhancement. The proposed method is tested for mammographic images from MIAS database. The performance of the proposed method is obtained using Peak Signal to Noise Ratio (PSNR). The results are compared with other standard enhancement techniques such as Histogram Equalization, Unsharp Masking (USM) and CLAHE. The experimental results of proposed method show that this method provides better contrast enhancement with preserving all the local information of the mammogram images. © 2013 Springer-Verlag.


Rahman M.R.,Dayananda Sagar College of Engineering
Advances in Intelligent Systems and Computing | Year: 2015

This paper aims to explain the basic physics concept of friction in a better way as it highlights the behavior of the body during motion considering the effect of friction. The paper combines physics and mathematics with equations and graphs. The investigation focuses the characteristics of a body in motion by keeping eye on friction by making graphical approach and also by quantitative study. The research establishes certain facts and points on friction. It establishes certain equations which helps the concept to understand better. A simple demonstration has been made for better understanding the concept. MATLAB software is used to draw the graphs. An algorithm has also been framed for step by step understanding and bringing clarity to the concept. © Springer International Publishing Switzerland 2015.


Panda K.C.,Dayananda Sagar College of Engineering
Procedia Engineering | Year: 2016

The present day automotive industry looks for every option to attract the customers with products which will be generating lower noise, consume lesser fuel but also be equally powerful. This unique requirement drives the motivation for building each and every aspect of a dynamical system to be represented in the math model. The product should be durable, less noisy, powerful, as well as elegant. The most challenging factor among these requirements is system noise and vibration, because better comfort means less noisy as perceived by the customers. Few years before almost all the major automotive industry were relaying with FEM and BEM based approach for building the model for addressing low and mid frequency issues (up to 3000 Hz). The aim of this paper is to provide a review of literature on the analysis techniques and validation methods used to address NVH issue in power-train systems, and also it covers the analysis procedures on present and future trends.

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