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Search Results: 1 - 10 of 2319 matches for " Gaurav Yadav "
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Semi Pixel Difference Method for Digital Image Watermarking With Minimum Degradation in Image Quality
Rajkumar Yadav,Gaurav Chawla,Ravi Saini
International Journal of Computer Technology and Applications , 2011,
Abstract: In this paper, a new method for digital image watermarking is proposed. The proposed method divides the pixel into two parts: semi-pixel 1 and semi-pixel 2. The watermark information bit is inserted at a pixel location according to the difference of two semi –pixels. The pixel for insertion of watermark is selected by using pseudo random number generator that is seeded with a secret key. Experimental results showed that the proposed method has given a good quality watermarked image.
Urban Pond Water Contamination in India  [PDF]
Ankit Yadav, Pravin Kumar Sahu, Suryakant Chakradhari, Keshaw Prakash Rajhans, Shobhana Ramteke, Nohar Singh Dahariya, Gaurav Agnihotri, Khageshwar Singh Patel
Journal of Environmental Protection (JEP) , 2016, DOI: 10.4236/jep.2016.71005
Abstract: The stagnant water reservoirs in urban area of India are severely contaminated with surfactant and microbe due to anthropogenic activities. In this work, water quality of pond water of the most industrialized city: Raipur, CG, India is described. The concentration of surfactant in the term of sodium lauryl sulfate (SLS) in water (n = 16) is ranged from 7.0 - 27 mg/L with mean value of 17 ± 3 mg/L. All ponds are found to be contaminated with microbes i.e. bacteria, algae and fungi at elevated levels. The physico-chemical characteristics of the pond water are discussed.
Complex hydrocephalus (combination of communicating and obstructive type): an important cause of failed endoscopic third ventriculostomy
Yad Yadav, Gaurav Mukerji, Vijay Parihar, Mallika Sinha, Sanjay Pandey
BMC Research Notes , 2009, DOI: 10.1186/1756-0500-2-137
Abstract: Seventy one patients of obstructive hydrocephalus who underwent ETV in our institution were included in this study. Aetiology of hydrocephalus included congenital aqueductal stenosis in 42 and tubercular meningitis (TBM) in 29 patients. Failure of ETV was seen in 15 (21%) patients. These 15 patients included 6 (14.3%) from the congenital group and 9 (31.0%) patients from the TBM group. Iohexol CT ventriculography confirmed a patent stoma (suggesting a complex hydrocephalus) in 10 (66.7%) out of the 15 failed ETV cases. The incidence of complex hydrocephalus was more common in TBM group (8/29 patients, 27.60%) compared to congenital group (2/42 patients, 4.8%). The complex hydrocephalus patients with a patent ETV stoma were successfully managed by a lumbar peritoneal (LP) shunt.Ten out of the 71 patients (14%) with obstructive hydrocephalus who underwent an ETV had a complex hydrocephalus, which was the major (66.7%) cause for failure of ETV. Improving methods to detect the exact type of hydrocephalus pre-operatively could increase success rate of ETV and avoid an unnecessary operative procedure (ETV).Hydrocephalus can be communicating, obstructive, or a combination of both. Understanding the basic pathology or the combination of pathologies leading to hydrocephalus in a given patient is essential to decide the best treatment option [1]. Patients with communicating hydrocephalus can be managed with a lumbar peritoneal (LP) shunt [2]. While, in purely obstructive hydrocephalus, an endoscopic third ventriculostomy (ETV) is a preferred option, as an alternative to ventriculoperitoneal (VP)/ventriculoatrial (VA) shunting [1,3]. In some cases, despite a functioning/patent stoma after an ETV, there is no clinical improvement and patients present with persistently raised intracranial pressure (ICP). In such cases, a combination of obstruction with defective absorption may be responsible for their clinical features. This entity with combination of pathologies is referred to
Data Migration between Crossbreed Platform Using Ant Colony Optimization
Mr. Dilbahar Singh,Mr. Sumit kumar Yadav,Mr. Gaurav kumar
International Journal of Innovative Technology and Exploring Engineering , 2013,
Abstract: In this fast moving world of digitization, cloud computing is becoming an essential part of the daily life if you are somewhat related to the business. Keeping the data secure on the server has become one of the major issues. With the increase in the time factor cloud services has become one the most challenging environment in this world. To overcome this problem cloud computing has emerged into the world but it is quite expensive. Now the problem is if you want to transfer the data along with its architecture from one server to another, it is important to keep the data secure and safe until and unless it reaches to the server end. Cross platform data transfer has been an issue from the last few decades. It has been seen that each and every platform uses different types of protocol for the architecture. In this paper we are proposing a technique for migration of the platform architecture along with the data with perfect accuracy to another cloud platform using Simple Object Access Protocol (SOAP) and Ant Colony Optimization (ACO) concept in Role-Based Access Control System (RBAC) will take a lot of effort due to the sophisticated architecture of a system protocol. This may lead to a new era in the cloud computing.
OPTIMIZED FLAME DETECTION USING IMAGE PROCESSING BASED TECHNIQUES
Gaurav Yadav,Vikas Gupta,Vinod Gaur,Dr. Mahua Bhattacharya
Indian Journal of Computer Science and Engineering , 2012,
Abstract: Present work is an in depth study to detect flames in video by processing the data captured by an ordinary camera. Previous vision based methods were based on color difference, motion detection of flame pixel and flame edge detection. This paper focuses on optimizing the flame detection by identifying gray cycle pixelsnearby the flame, which is generated because of smoke and of spreading of fire pixel and the area spread of flame. These techniques can be used to reduce false alarms along with fire detection methods . The novel system simulate the existing fire detection techniques with above given new techniques of fire detection and give optimized way to detect the fire in terms of less false alarms by giving the accurate result of fire occurrence. The strength of using video in fire detection is the ability to monitor large and open spaces. The novel system also give the opportunity to adjust the system by applying different combination of fire detectingtechniques which will help in implementation of system according to different sensitive area requirement.
Expanding traumatic intracerebral contusion/hematoma
Yadav Yad,Basoor Abhijeet,Jain Gaurav,Nelson Adam
Neurology India , 2006,
Abstract: Background and Aims: Delayed traumatic hematomas and expansion of already detected hematomas are not uncommon. Only few studies are available on risk factors of expanding hematomas. A prospective study was aimed to find out risk factors associated with such traumatic lesions. Materials and Methods: Present study is based on 262 cases of intracerebral hematomas / contusions out of which 43 (16.4%) hematomas expanded in size. computerized tomography (CT) scan was done in all the patients at the time of admission and within 24 hours of injury. Repeat CT scan was done within 24 hours, 4 days and 7 days. Midline shift if any, prothrombin time, activated partial thromboplastin time, bleeding time, clotting time and platelet counts, Glasgow coma scale at admission and discharge and Glasgow outcome score at 6 months follow up were recorded. Results: Twenty six percent, 11.3 and 0% patients developed expanding hematoma in Glasgow Coma scale (GCS) of 8 and below, 9-12 and 13-15 respectively. The chances of expanding hematomas were higher in patients with other associated hematomas (17.4%) as compared to isolated hematoma (4.8%) (Fisher′s exact results P =0.216). All the cases of expanding hematoma had some degree of midline shift and considerably higher proportion had presence of coagulopathy. The results of logistic regression analysis showed GCS, midline shift and coagulopathy as significant predictors for the expanding hematoma. Thirty nine patients (90.7%) of the total expanding hematomas developed within 24 hours of injury. Conclusions: Enlargement of intracerebral hematomas is quite common and majority of them expand early after the injury. These lesions were common in patients with poor GCS, associated hematomas, associated coagulopathy and midline shift.
Pediatric intramedullary schwannoma without neurofibromatosis
Mukerji Gaurav,Sherekar Snehal,Yadav Yad,Chandrakar Shiv
Neurology India , 2007,
Abstract: Pediatric intramedullary schwannoma without neurofibromatosis is extremely rare with only five cases reported so far. We present this rare finding in an 8-year-old boy who presented with a sudden onset of weakness in all limbs. An intraoperative diagnosis of schwannoma enabled us to carry out a total excision of the tumor, which resulted in near complete recovery at 18 months follow-up. Although rare, this diagnosis should be considered when a child presents with a solitary intramedullary tumor, since its total resection can be achieved improving surgical outcome.
A COMPARATIVE STUDY OF BIPED DYNAMIC WALKING
Bharat Sharma,Anil Kumar,Kumar Gaurav,Dhirendra Yadav
International Journal of Advanced Technology & Engineering Research , 2012,
Abstract: Biped legged robots have been motivated by its potential use in rough terrain, as well as for advancement in prosthesis manufacturing and testing. This paper will give comparative analysis of various walking schemes of biped humanoid ro-bot and concentrates on issues related to its automatic con-trol. The paper shows that there is scope for improvement in the present available biped robots and further enhancement can be done in order to augment controllability and speed of working with more accuracy. The deficit in the available technology has been addressed and the emphasis on which further research work must be done is highlighted.
Influence by physical properties of coal combustion residues (CCRs) on dry root productivity of Withania somnifera grown in black cotton soil
Bhisham Yadav,Amarjeet Bajaj,Mohini Saxena,Gaurav Paliwal
Journal of Pharmacognosy and Phytochemistry , 2013,
Abstract: In India, presently ~40% Coal Combustion Residues (CCRs) generated by burning of pulverized coal at Thermal Power Station is being used for cement, bricks, land reclamation etc. Now a day it has also been considered for agriculture applications. This study, an attempt was made to use of CCRs as soil modifier and micro fertilizer for cultivation of Withania somnifera under two cropping. Results revealed that production of dry root yields of Withania somnifera was found higher in T5 treatment (35.545g and 39.002g per plant) as compared to control treatment (T1). It is showed significant (p<0.001%) from all the treatments in both the years. The essential elements like Cu, Zn, Fe and Mn were found increasing trends in dry root of Withania somnifera with increase the concentration of CCRs application. This study is found the bulk utilization of CCRs for cultivation of Withania somnifera improved their root yield and chemical quality.
Endoscopic management of hypertensive intraventricular haemorrhage with obstructive hydrocephalus
Yad Yadav, Gaurav Mukerji, Ravikiran Shenoy, Abhijeet Basoor, Gaurav Jain, Adam Nelson
BMC Neurology , 2007, DOI: 10.1186/1471-2377-7-1
Abstract: During a two year period, 25 patients diagnosed as having an intraventricular haemorrhage with obstructive hydrocephalus secondary to hypertension were included in this study. All patients underwent endoscopic evacuation of the haematoma under general anaesthesia. Post operative evaluation was done by CT scan and Glasgow outcome scale.Of the 25 patients, thalamic haemorrhage was observed in 12 (48%) patients, while, 11 (44%) had a putaminal haematoma. Nine (36%) patients had a GCS of 8 or less pre-operatively. Resolution of hydrocephalus following endoscopic evacuation was observed in 24 (96%) patients. No complications directly related to the surgical technique were encountered in our study. At six months follow-up, a mortality rate of 6.3% and 55.5% was observed in patients with a pre-operative GCS of ≥ 9 and ≤ 8 respectively. Thirteen of the 16 (81.3%) patients with a pre-operative GCS ≥ 9 had good recovery.Endoscopic technique offers encouraging results in relieving hydrocephalus in hypertensive intraventricular haemorrhage. Final outcome is better in patient with a pre-operative GCS of >9. Future improvements in instrumentation and surgical techniques, with careful case selection may help improve outcome in these patients.Non-traumatic intracerebral haemorrhage (ICH), an acute and spontaneous extravasation of blood into the brain parenchyma is the second most common cause of stroke [1] and accounts for 30–60% of all stroke admissions into a hospital [2]. Hypertension results in a two to six fold increase in the risk of intracerebral haemorrhage [3,4]. Thirty day mortality for CT confirmed intracerebral haemorrhage has been reported to be between 34 to 50% [5]. The severity of neurologic presentation [Glasgow Coma Scale (GCS)], age of patient, location of haematoma and presence of intraventricular haematoma are considered predictors of 30 day and 1 year mortality, with the older patient with a lower GCS, infratentorial haematoma and an intraventricular haematoma
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