Sharda University

About: Sharda University is a education organization based out in Greater Noida, Uttar Pradesh, India. It is known for research contribution in the topics: Computer science & Medicine. The organization has 1276 authors who have published 2012 publications receiving 16188 citations.

Modern Engineering Mathematics

Abstract: This book is a compendium of fundamental mathematical concepts, methods, models, and their wide range of applications in diverse fields of engineering. It comprises essentially a comprehensive and contemporary coverage of those areas of mathematics which provide foundation to electronic, electrical, communication, petroleum, chemical, civil, mechanical, biomedical, software, and financial engineering. It gives a fairly extensive treatment of some of the recent developments in mathematics which have found very significant applications to engineering problems.

A digital audio watermarking scheme using selective mid band DCT coefficients and energy threshold

Abstract: In this paper, two blind digital audio watermarking technique are proposed according to the payload requirement which uses discrete cosine transform (DCT). In our method the watermark is embedded into the selected mid band coefficients of the DCT transformed audio. The selected coefficients are middle band DCT coefficients which are modified and quantized through the average energy of the selected sub frame for watermark embedding. The mid band frequency components are selected through experiments such that the effect of mp3 compression and the common signal processing operation has a minimum effect on these coefficients. Original audio will not be required for extraction of the watermark. To adapt to the mp3 attack a preprocessing step is embedded which did an mp3 conversion of the audio and convert again the audio to the original format prior to embedding. Also embedding is done on the selected blocks which satisfies minimum energy threshold. Experiments show that our scheme produces imperceptible audios and the watermarked audio is robust against common signal processing attacks.

Conclusion and future considerations of dendrimers

Abstract: Dendrimers are new hyperbranched globular and three-dimensional nanocarrier. Dendrimer nanocarriers are emergent as most attractive nanocarrier for gene and drug delivery vector. Availability of multiple surface functional groups allow conjugation of targeting moieties which can attract to receptors overexpressed on various cancer cells. It can be concluded that dendrimers show substantial potential as a versatile carrier for bioactives. However, the landing of dendrimer from seat of chemist to formulation desk is still far from complete. Interdisciplinary vision on dendrimer combination with other nanocarriers can be arise as a satisfying strategy. However, the toxicity of the constituents of nanohybrids, vis-a-vis the hybrid itself, will have to be discovered and recognized, if not ruled out.

Operative Management of Hoffa Fracture of the Femoral Condyle

Abstract: Hoffa fracture is a rare injury consisting of unicondylar tangential posterior fracture of the distal femur and only very few cases have been reported in the literature. These fractures are due to high energy trauma and conservative treatment generally yields poor results, but rigid internal fixation allows early functional rehabilitation and decreases the incidence of complications. The purpose of the study was to prospectively analyse the clinico-radiological and functional outcome following open surgical treatment. From July 2005 to July 2010, 22 patients (14 males and 8 females) were recruited from Emergency and outpatient department having closed and open Hoffa fracture of the femoral condyle. All patients were operated under general or spinal anesthesia. Post-operatively, all the patients were followed for 12 months. Fractures were united in a mean time of 10 weeks (range from 6 - 16 weeks) depending on the type of fracture pattern. Fractures were reduced anatomically in all except in one patient. During follow-up, there were no losses of reduction or fixation. Full weight bearing were started in the mean time of 8.8 weeks. Mean duration of hospital stay were 9.8 days. Complications were stiffness and pain in one patient, collateral laxity in one patient and progression of arthritis in one patient. The results were excellent in 90.90% and good in 9.09% patients. Finally, we conclude that the early anatomical reduction and rigid fixation with screws provide best results and minimal complications.

Diagnosis and Management of Acute Encephalitis in Children.

Abstract: Acute encephalitis is a common cause of death and neurodevelopmental problems in children. The causative agents are numerous including infectious agents such as viruses, bacteria, mycobacteria and protozoa; para-infectious and immune mediated disorders such as acute disseminated encephalomyelitis (ADEM) and autoimmune encephalitis, especially the recently described anti-NMDA receptor encephalitis. Also, many viral associated encephalopathies such as acute necrotizing encephalopathy can mimic the presentation of acute encephalitis. In this article, authors describe the approach to the diagnosis and management of acute encephalitis in children.