Kuravatti P.,Alliance University |
Rukmini T.S.,Dayananda Sagar College of Engineering
2016 IEEE International Conference on Recent Trends in Electronics, Information and Communication Technology, RTEICT 2016 - Proceedings | Year: 2016
Mutual coupling is a critical issue in antenna elements is placed in the form of array between the antenna elements. In the present work Jerusalem cross periodic structure is proposed as an effective solution for reducing mutual coupling in a micro strip array antenna with more than one element. This structures have been Applied between the patches have been Simulated and verified with practical results. © 2016 IEEE.
Sahu V.,Alliance University |
Sharma P.,Devi Ahilya University |
Kumar A.,Devi Ahilya University
Medicinal Chemistry Research | Year: 2013
The present communication deals with the synthesis of a series of 1-[3-methyl-2-(aryldiazenyl)-2H-aziren-2-yl]ethanones. The compounds were synthesized in excellent yields (70-80 %), and the structures were established on the basis of consistent IR, 1H NMR, and elemental analysis data. The purity has been ascertained by chromatographic resolution using hexane-ethyl acetate (6:4 v/v) as binary eluent. All the compounds have been tested for their antimicrobial activity against a representative panel of bacteria i.e., Bacillus subtilis, Escherichia coli, Pseudomonas diminuta, and Staphylococcus aureus using Chloramphenicol as reference drug. All the synthesized compounds were found to exhibit profound antimicrobial activity. © 2012 Springer Science+Business Media New York.
Suganthi G.,Sathyabama University |
Korah R.,Alliance University
International Review on Computers and Software | Year: 2014
An efficient landmine detection system is one that should offer a high probability of detection and a low false alarm rate irrespective of the size, shape, explosive, casing, soil in which it is buried, depth of burial and varying environmental conditions. Though 100% probability of detection is still a research question, several techniques are being introduced for an effective demining exploiting various available sensors that are used in landmine detection. In this paper, we focus our attention on finding and evaluating appropriate landmine specific features from the fuzzy segmented infrared (IR) landmine images in order to differentiate them from the background clutters. The system consists of four stages. In the first stage, the acquired IR image is preprocessed using a Gaussian filter to remove the noise and smooth the image. In the second stage, fuzzy segmentation is done on the preprocessed image and the false segmented pixels are removed by post processing the segmented image using various morphological operations. Various structural and Gray Level Co-occurrence Matrix (GLCM) statistical features are extracted in the third stage. A fuzzy inference system is presented in the fourth stage which evaluates the extracted data features and generates a mine confidence value which can be compared to the user defined threshold in order to classify the potential targets as mines or clutters. © 2014 Praise Worthy Prize S.r.l. - All rights reserved.
Bhattacharjee K.,Alliance University
2014 Power and Energy Systems Conference: Towards Sustainable Energy, PESTSE 2014 | Year: 2014
Power quality is an all-encompassing concept for a multitude of individual types of power system disturbances. The presence of harmonics in power supply network poses a severe power quality problem that results in greater power losses in the distribution system, interference problems in communication systems and, sometimes, in operation failures of electronic equipment. Shunt active power filters are employed to suppress the current harmonics and reduce the total harmonic distortion (THD). The voltage source inverter (VSI) is the core of an active power filter. The hysteresis current control is a method of controlling the VSI. Hysteresis control can be either of fixed band type or adaptive band type. In this paper, Synchronous Reference Frame (SRF) theory is implemented for the generation of reference current signals for the controller. This paper investigates the effectiveness of the proposed model in harmonics currents mitigation by simulating a model of a three-phase three-wire shunt active power filter based on adaptive hysteresis current control and SRF theory. Simulation results indicate that the proposed active power filter can restrain harmonics of electrical source current effectively © 2014 IEEE.
Gjerde J.L.,University of Bergen |
Rortveit G.,University of Bergen |
Muleta M.,Alliance University |
Blystad A.,University of Bergen
International Urogynecology Journal and Pelvic Floor Dysfunction | Year: 2013
Introduction and hypothesis: The aim of this study was to gain in-depth knowledge of women suffering from urinary incontinence (UI) in rural and semiurban settings in Ethiopia. Methods: A qualitative study based on semistructured in-depth interviews with 26 informants, 18 of whom were women experiencing the symptom of urinary leakage. The study was conducted in the Amhara Region of northwest Ethiopia and was part of the Dabat Incontinence and Prolapse (DABINCOP) study. Results: Limited access to water, soap, pads, and spare clothes characterized daily management of the symptom. The consequences for marital relationships and social life were of great concern to the informants. Shame, embarrassment, and fear of being discriminated against led to huge efforts to hide the leakage. Among informants who were not able to hide it, humiliating comments and discriminatory behavior were commonly experienced, sometimes leading to divorce and self-isolation. Women who disclosed their symptom usually had a person who supported them. Women with UI regarded it as unnatural and uncommon. Most took no action to improve the situation, as they saw no options for help. Conclusions: Several circumstances limited the opportunities available to women to keep themselves clean, disclose the problem to others, and access health information and health-care facilities. In order to understand how women in this setting practically handled, perceived, and experienced living with UI, it was essential to address contextualized and sociocultural dimensions related to the symptom. © 2012 The International Urogynecological Association.
Wiviott S.D.,Harvard University |
Steg P.G.,Alliance University |
Steg P.G.,University Paris Diderot |
Steg P.G.,French Institute of Health and Medical Research |
Steg P.G.,Imperial College London
The Lancet | Year: 2015
Platelet-mediated thrombosis is a major pathophysiological mechanism that underlies acute coronary syndromes, and therefore, antiplatelet therapy is an important foundation in the treatment and prevention of recurrence of these syndromes. Nearly 30 years ago, aspirin was the first agent to show a benefit for acute coronary syndromes and is still a key therapeutic agent. The landmark CURE trial showed that the addition of a P2Y12 antagonist, clopidogrel, to aspirin was beneficial in the treatment of acute coronary syndromes. Despite substantial benefits with clopidogrel, limitations include the slow speed of onset, variable response, and a modest antiplatelet effect. Next-generation P2Y12 antagonists, prasugrel and ticagrelor, overcome these limitations and have been shown, in large-scale clinical trials for acute coronary syndromes, to reduce ischaemic events more than clopidogrel, at the expense of an increase in bleeding. Additional agents that target platelets by alternate mechanisms, including the protease-activated receptor-1 antagonist vorapaxar, have shown ischaemic benefit. These large-scale trials inform treatment decisions that need to balance ischaemic benefit and bleeding risk in patients with acute coronary syndromes. This Series paper describes major trial results, implications for clinical practice, and summarises continuing controversy. © 2015 Elsevier Ltd.
Aiyar M.L.,Alliance University |
Kenchappa R.,National Institute of Technology Jalandhar
Proceedings - 6th International Advanced Computing Conference, IACC 2016 | Year: 2016
Sub-Pixel Motion Estimation and compensation is a high-precision algorithm with very high complexity in HEVC/MPEGH/H.265 Video Codec's. This is because moving objects do not move by integer pixel locations between successive video frames. Typically, fractional pixel accuracy is obtained by means of bilinear interpolation producing a spatially blurred predicted signal. The motion estimation and compensation is improved in this paper by means of the filtering effect using a very effective spatial digital low pass FIR filter. This filter allows the motion to be detected, at very high precision using the fractional motion estimation. The fractional pixel accuracy was achieved using a total of 112 8-tap digital FIR filter for one-eighth pixel precision, which includes half and quarter pixel accuracy. The design has been implemented on a 28nm foundry process, with a speed of 1.101 GHz and it has achieved 2262 GOPS at this speed, outputting data at the rate of 1.8 Tera bits per second, for one-eighth pixel accuracy. Computational complexity, Memory & I/O Bandwidth has been reduced by inputting the Mean Square Error Map of the pixels to the Fractional Pixel Estimator and then searching in the sub-pixel grid. This design is targeted for 8K Ultra High Definition Television (UHDTV).8K HDTV format is 8192 x 4320 pixels. This amounts to 35.4 Million Pixels per Frame. The incoming Video Pixel Rate for 8K HDTV at 60 Frames per Second(fps) is 2.12 Billion Pixels per Second or 2.12 Giga Pixels/second. This amounts to an incoming Video Data Rate of 51 Billion bits per second or 51 Gbps. At 120 frames per second the Incoming Video Pixel rate is 4.24 Billion Pixels per Second or 4.24 Giga Pixels/Second. This amounts to incoming Video Data Rate of 102 Gbps. For Quarter Pixel Motion Estimation, we are adding 3 Sub-Pixels for every Integer Pixel. Pixel Count increases by a factor of 16. For 4K HDTV this becomes 142 Million Pixels per Frame. At 60fps, the Pixel rate is 8.5 Billion Pixels per Second or 8.5 Giga Pixels/Second, with a Video Processing Data Rate of 195 Gbps. At 120fps the Pixel rate 17 Billion Pixels Per Second or 17 Giga Pixels/Second, with a Video Processing Data Rate of 390 Gbps. For 1/8th Pixel Motion Estimation, we are adding 7 Sub-Pixels for every Integer Pixel. Pixel Count increases by a factor of 64. For 4K HDTV -570 Million Pixels per Frame. At 60fps, the Pixel rate is 34 Billion Pixels per Second or 34 Giga Pixels/Second, Video Processing Data Rate of 780 Gbps. At 120fps the Pixel rate 70 Billion Pixels Per Second or 70 Giga Pixels/Second, Video Processing Data Rate of 1560 Gbps / 1.56 Tbps. © 2016 IEEE.
Tongay S.,University of California at Berkeley |
Fan W.,University of California at Berkeley |
Fan W.,University of Science and Technology of China |
Kang J.,CAS Institute of Semiconductors |
And 11 more authors.
Nano Letters | Year: 2014
Band offsets between different monolayer transition metal dichalcogenides are expected to efficiently separate charge carriers or rectify charge flow, offering a mechanism for designing atomically thin devices and probing exotic two-dimensional physics. However, developing such large-area heterostructures has been hampered by challenges in synthesis of monolayers and effectively coupling neighboring layers. Here, we demonstrate large-area (>tens of micrometers) heterostructures of CVD-grown WS2 and MoS2 monolayers, where the interlayer interaction is externally tuned from noncoupling to strong coupling. Following this trend, the luminescence spectrum of the heterostructures evolves from an additive line profile where each layer contributes independently to a new profile that is dictated by charge transfer and band normalization between the WS2 and MoS2 layers. These results and findings open up venues to creating new material systems with rich functionalities and novel physical effects. © 2014 American Chemical Society.
Aiyar M.L.,Alliance University |
Kenchappa R.,National Institute of Technology Jalandhar
Proceedings of the 2016 IEEE International Conference on Wireless Communications, Signal Processing and Networking, WiSPNET 2016 | Year: 2016
Despite increased complexity sub-pixel motion estimation and compensation significantly outperforms integer motion estimation and compensation in HEVC/MPEGH/H.265 Video Codec's, since moving objects do not necessarily move by integer pixel locations between successive video frames. Typically, fractional pixel accuracy is obtained by means of bilinear interpolation producing a spatially blurred predicted signal. The motion estimation and compensation is improved in this paper by means of the filtering effect using a very effective spatial digital low pass FIR filter, which allows the motion vectors to be determined with higher levels of precision and accuracy than existing algorithmic implementations. The fractional pixel accuracy was achieved using a total of 112 8-tap digital FIR filter for one-eighth pixel precision, which includes half and quarter pixel accuracy. The design has been implemented on a 28nm foundry process, with a speed of 1.101 GHz and it has achieved 2262 GOPS at this speed, outputting data at the rate of 1.8 Tera bits per second, for one-eighth pixel accuracy. Computational complexity, Memory & I/O Bandwidth has been reduced by inputting the Mean Square Error Map of the pixels to the Fractional Pixel Estimator and then searching in the sub-pixel grid. © 2016 IEEE.
Manohar N.,Alliance University
Lecture Notes in Electrical Engineering | Year: 2013
The way of usage of computer is changed due to Internet and new technology called cloud computing. Cloud computing is the merging of another two new technologies like service-oriented architecture (SOA) and virtualization. The virtualization is gaining new goals and attracting those who need to perform the "miracle of multiplication," as it is to fit more information into less space. The present survey paper is addressing about the virtualization which is one of the key features of the cloud computing, types of virtualization and its approaches, types of hypervisor, and building private cloud with the virtualization. The security of cloud computing is also discussed with new idea of introducing optical network as an access network and its devices in the data centers for an energy efficient centers. © 2013 Springer.