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Search Results: 1 - 10 of 1413 matches for " Rai Anurag "
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A Technique for Designing Stabilizing Distributed Controllers with Arbitrary Signal Structure Constraints
Anurag Rai,Sean Warnick
Mathematics , 2012,
Abstract: This paper presents a new approach to distributed controller design that exploits a partial-structure representation of linear time invariant systems to characterize the structure of a system. This partial-structure representation, called the dynamical structure function, characterizes the {\em signal structure}, or open-loop causal dependencies among manifest variables, capturing a significantly richer notion of structure than the sparsity pattern of the transfer function. The design technique sequentially constructs each link in an arbitrary controller signal structure, and the main result proves that the resulting controller is either stabilizing or no controller with the desired structure can stabilize the system.
A Survivability Strategy in Route Optimization Mobile Network by Memetic Algorithm
K. K. Guatam,Anurag Rai
Computer Science , 2010,
Abstract: The capability to provide network service even under a significant network system element disruption is the backbone for the survival of route optimize of mobile network Technology in today s world. Keeping this view in mind, the present paper highlights a new method based on memetic algorithm.
Performance Modeling and Evaluation of Traffic management for Mobile Networks by SINR Prediction
K. K. Guatam,Anurag Rai
Computer Science , 2010,
Abstract: Over the recent years a considerable amount of effort has been devoted towards the performance evaluation and prediction of Mobile Networks. Performance modeling and evaluation of mobile networks are very important in view of their ever expending usage and the multiplicity of their component parts together with the complexity of their functioning. The present paper addresses current issues in traffic management and congestion control by (signal to interference plus noise ratio) SINR prediction congestion control, routing and optimization of cellular mobile networks.
A complicated true sliding hernia presenting as a spontaneous enteroscrotal fistula in an adult
Rajamanickam Saravana,Yadav Ashok,Rai Anurag,Singh Devendra
Journal of Emergencies, Trauma and Shock , 2010,
Abstract: A 26-year-old man presented with an irreducible right inguino-scrotal swelling and fecal discharge from the scrotum. Exploratory laparotomy and inguinal exploration revealed that the caecum, appendix, and terminal ileum had herniated into the scrotum and had perforated through the skin forming a fecal fistula. The herniated gangrenous bowel was resected and a stoma fashioned. Spontaneous entero-scrotal fistulae are very rare and eight pediatric cases have been mentioned in literature till date. We report the first case of true sliding hernia presenting as spontaneous entero-scrotal fistula in an adult.
Parent Siblings Oriented Tree Quorum Protocol
Anurag Singh,,Ashish Kumar Rai,,Anup Kumar Jayswal,Meenu
International Journal on Computer Science and Engineering , 2011,
Abstract: In this paper, we are proposing a new replica control algorithm Parent Siblings Oriented Tree Quorum Protocol (PSTQ) for the management of replicated data in distributed database system. Thisalgorithm imposes a logical structure of tree on the set of copies of an object. The proposed protocol provides a small read quorum as well as a small write quorum while guaranteeing fault-tolerance of write operations. With this algorithm read operation is executed by reading one copy in failure-free environment. In case of failure of sites, number of data copies required for read operation increases but remains constant for subsequent failure of the sites. The less number of data copies required for write operation provide low write operation cost and high write availability.
Loop-Free Backpressure Routing Using Link-Reversal Algorithms
Anurag Rai,Chih-ping Li,Georgios Paschos,Eytan Modiano
Computer Science , 2015,
Abstract: The backpressure routing policy is known to be a throughput optimal policy that supports any feasible traffic demand in data networks, but may have poor delay performance when packets traverse loops in the network. In this paper, we study loop-free backpressure routing policies that forward packets along directed acyclic graphs (DAGs) to avoid the looping problem. These policies use link reversal algorithms to improve the DAGs in order to support any achievable traffic demand. For a network with a single commodity, we show that a DAG that supports a given traffic demand can be found after a finite number of iterations of the link-reversal process. We use this to develop a joint link-reversal and backpressure routing policy, called the loop free backpressure (LFBP) algorithm. This algorithm forwards packets on the DAG, while the DAG is dynamically updated based on the growth of the queue backlogs. We show by simulations that such a DAG-based policy improves the delay over the classical backpressure routing policy. We also propose a multicommodity version of the LFBP algorithm, and via simulation we show that its delay performance is better than that of backpressure.
Efficacy and Safety of Paromomycin in Treatment of Post-Kala-Azar Dermal Leishmaniasis
Shyam Sundar,Anup Singh,Anurag Tiwari,Saurabh Shukla,Jaya Chakravarty,Madhukar Rai
ISRN Parasitology , 2014, DOI: 10.1155/2014/548010
Abstract: Background. Post-kala-azar dermal leishmaniasis (PKDL) plays an important role in maintaining endemicity of visceral leishmaniasis and its transmission. Treatment regimens for PKDL are toxic and require 3-4 months of hospitalization. These long and arduous regimens result in extensive noncompliance. There is an urgent need to develop a safe, effective, and acceptable regimen for the treatment of PKDL. Paromomycin (PM) has been recently approved in India for treatment of visceral leishmaniasis (VL); hence we tested its efficacy in patients with PKDL. Methods. In this exploratory study, 31 patients with PKDL aged 10 years and above were administered PM 11?mg/kg daily intramuscularly for 45??days and followed up for one year. Results. Out of 31 patients, 7 patients were lost to followup at 1??year and 9 (37.5%) got cured with complete disappearance of lesion, while 15 (62.5%) showed no improvement by per protocol analysis. Conclusion. Cure rate with 45 intramuscular injections of PM was unacceptably low though there was no serious side effect of the drug. Whether paromomycin can be used in multidrug therapy to shorten the duration of treatment should be the next logical step for investigation. 1. Introduction Post-kala-azar dermal leishmaniasis (PKDL) is a dermal manifestation of Leishmania donovani infection and often follows resolution of clinical visceral leishmaniasis (VL). However, it may also manifest without prior history of VL in a small minority of patients [1]. PKDL is characterized by macular, papular, or nodular lesions or a mixture of them. It is quite common in Sudan (occurring in >50% of patients with VL), where it may occur concurrently or follows immediately after an episode of VL and heals spontaneously in majority of patients [2], whereas in the Indian subcontinent it occurs in 2–20% of patients, 6 months to several years after an episode of VL [3]. In a recent trial the prevalence of confirmed PKDL cases was 4.4 per 10 000 individuals and 7.8 if probable cases were also considered [4]. Several treatment regimens have been recommended for the treatment of PKDL in India, for example, 120 days of parenteral sodium stibogluconate (20?mg/kg body weight) [1] or three courses of 20 daily infusions of amphotericin B with an interval of 20 days in between the courses [5]. These inordinately long parenteral regimens invariably lead to either nonacceptance or poor compliance. In the last decade two new antileishmanial compounds, miltefosine and paromomycin, have been approved for the treatment of VL in India. There is a report about the efficacy
A new hyphomycetous species from India
Indian Phytopathology , 2012,
Detection of Ventricular Fibrillation Using Random Forest Classifier  [PDF]
Anurag Verma, Xiaodai Dong
Journal of Biomedical Science and Engineering (JBiSE) , 2016, DOI: 10.4236/jbise.2016.95019
Abstract: Early warning and detection of ventricular fibrillation is crucial to the successful treatment of this life-threatening condition. In this paper, a ventricular fibrillation classification algorithm using a machine learning method, random forest, is proposed. A total of 17 previously defined ECG feature metrics were extracted from fixed length segments of the echocardiogram (ECG). Three annotated public domain ECG databases (Creighton University Ventricular Tachycardia database, MIT-BIH Arrhythmia Database and MIT-BIH Malignant Ventricular Arrhythmia Database) were used for evaluation of the proposed method. Window sizes 3 s, 5 s and 8 s for overlapping and non-overlapping segmentation methodologies were tested. An accuracy (Acc) of 97.17%, sensitivity (Se) of 95.17% and specificity (Sp) of 97.32% were obtained with 8 s window size for overlapping segments. The results were benchmarked against recent reported results and were found to outper-form them with lower complexity.
Application of Markov Process to Improve Production of Power Plant
Anurag Baghela
International Journal of Engineering and Advanced Technology , 2012,
Abstract: Due to the fast paced growth of world economy the energy demand is increasing very rapidly. To maintain the quality of power, economical production and long run performance of the plants should be kept failure free (as far as possible). So, these industries invest much more for up-gradation, high level of automation and use sophisticated machineries to get the desire level of results. But, still these industries are lagging in dependable and reliable supplies of electricity. Today most of the power plants are operating with low efficiency. In most of the cases it is less than 30%. There are a few plants in which efficiency is more than 60%. To prevent such mishaps a detailed system behavioral analysis along with maintenance planning is important. For which a mathematical model is necessary which exhibit the system upstate in quantitative form and analyze system performance in actual operating conditions. It is also helpful to process design department for modification in design and to maintenance department to in monitoring the system performance and planning in advance to keep system failure free for longer duration. The work presented here is mainly concerned with reliability centered maintenance of thermal power plant. The study is conducted in a Thermal Power Plant situated in Rajasthan.
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