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Search Results: 1 - 10 of 286412 matches for " K.E. SREENIVASA MURTHY "
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International Journal of Engineering Science and Technology , 2010,
Abstract: In CDMA systems interference is the major problem. Reducing the interference results in direct increase in system capacity. This interference reduction can be controlled by investing additional por per user at the transmitter or by using spreading codes. The use of any orthogonal code spreading sequences provides excellent performance for the downlink of DS-CDMA systems in Additive White Gaussian noise (AWGN) channels. However, the hostile nature of the wireless channel can severely degrade the orthogonality of such sequences and unless compensated for at the receiver it will result in significant Multiple access interference (MAI). The MAI experienced by the different users depends on the cross correlations of the user’s codes as ll as the instantaneous values of the user’s data symbols to be transmitted. The principle of the proposed technique is to exploit the dependency of multiple access nterference on the instantaneous symbol values of active users. Thispaper implements the CDMA transmitter and receiver algorithm for both Adaptive code allocation, fixed code allocation with different loads.
Hierarchical and Bayesian Scattered Data Taxonomy in Mobile Ad-hoc Network
Sunar Arif Hussain,K.E.Sreenivasa Murthy
World of Computer Science and Information Technology Journal , 2011,
Abstract: MANETS promise an unprecedented opportunity to monitor physical environments via inexpensive wireless embedded devices. Given the sheer amount of sensed data, efficient taxonomy of them becomes a critical task in many sensor network applications. The Bayesian classifier is a fundamental taxonomy technique. We introduce two classifiers: Naive Bayes and a classifier based on class decomposition using K-means clustering. We consider two complementary tasks: model computation and scoring a data set. We study several layouts for tables and several indexing alternatives.In this paper, we propose a novel decision-tree-based hierarchical scattered taxonomy approach, in which local classifiers are built by individual sensors and merged along the routing path forming a spanning tree. The classifiers are iteratively enhanced by combining strategically generated pseudo data and new local data, eventually converging to a global classifier for the whole network. We also introduce some control factors to facilitate the effectiveness of our approach. Through extensive analysis, we study the impact of the introduced control factors, and demonstrate that our approach maintains high taxonomy accuracy with very low storage and communication overhead. The approach also addresses a critical issue of heterogeneous data distribution among the sensors.
Results Analysis of IP Address Auto- Configuration in Wireless Manets
S. Zahoor Ul Huq,S. Shabana Begum,Dr. K.E. Sreenivasa Murthy,Prof. B. Satyanaryana
International Journal of Engineering and Technology , 2011,
Abstract: The main task of an address allocation protocol is to manage the address allocation to the nodes in the ad hoc MANETs. All routing protocols assume nodes to be configured a priori with a uniqueIP address. Allocating addresses to mobile nodes is a fundamental and difficult problem. A mobile device cannot participate in unicast communications until it is assigned a conflict-free IP address. So addressing in MANETs is of significant importance, and the address configuration process should be fast, as the algorithm must be able to select, allocate and assign a unique network address to the unconfigured node before with a unique IP address. Here we are providing two solutions for unique address assignment. One is by the using the broadcasting method (BrM), in which unique addresses are assigned, unique addresses are assigned with the cost of network load. This method works fine whenever a new ad hoc network has to be initiated and at a same time a group of nodes have to be configured with a unique IP addresses. But this method loads the network with much network traffic, when new nodes are to be joined. In order to overcome this we are using another approach which uses Modular Arithmetic (MoA). Modular Arithmetic with some modifications is used to generate the unique IP Addresses without loading the network. The proposed scheme is capable of assigning a unique IP address with low communicationoverhead, even addresses distribution and low latency when applied to large scale MANETs and even supports network merging and partitioning..
Analysis of Efficient Address Allocation Schemes In Mobile Ad Hoc Networks
S.Zahoor Ul Huq,Dr. K.E.Sreenivasa Murthy,G. Pulla Reddy Engineering College, Dr. B.Satyanarayana,D.Kavitha
International Journal of Engineering Science and Technology , 2010,
Abstract: A Mobile Ad-hoc Network (MANET) can be implemented anywhere where there is little or no communication infrastructure, or the existing infrastructure is inconvenient to use. A number of mobile devices may connect together to form one network. Address auto-configuration is an important issue for ad hoc networks in order to provide autonomous networking and self-management. In this paper we take into account various parameters for designing an efficient address allocation scheme in MANETs and consider the best of them to build an efficient protocol for Address allocation in MANETs.
2-Amino-5-fluorobenzoic acid
S. Sreenivasa,K.E. ManojKumar,P.A. Suchetan,B. S. Palakshamurthy
Acta Crystallographica Section E , 2013, DOI: 10.1107/s160053681300408x
Abstract: In the title compound, C7H6FNO2, the molecule is almost planar (r.m.s. deviation for the non-H atoms = 0.015 ) and an intramolecular N—H...O hydrogen bond closes an S(6) ring. In the crystal, inversion dimers linked by pairs of O—H...O hydrogen bonds generate R22(8) loops. Weak N—H...F hydrogen bonds, short F...F contacts [2.763 (2) ] and aromatic π–π stacking interactions [centroid–centroid separation = 3.5570 (11) ] are also observed in the crystal structure.
1-(2-Amino-6-methylpyrimidin-4-yl)-N,N-dimethylpiperidin-4-aminium chloride
S. Sreenivasa,K.E. ManojKumar,P.A. Suchetan,T. Srinivasan
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812046533
Abstract: In the title molecular salt, C12H22N5+·Cl , the cation is protonated at the dimethyl-substituted tertiary N atom. The piperidine ring adopts a chair conformation with the exocyclic N—C bond in an equatorial orientation. The dihedral angle between the piperidine ring (all atoms) and the pyrimidine ring is 14.00 (1)°. In the crystal, the ions are connected by N—H...N hydrogen bonds, forming inversion dimers, which are further connected by N—H...Cl hydrogen bonds. Aromatic π–π stacking interactions [centroid–centroid separation = 3.4790 (9) ] are also observed in the structure.
Sacral nerve stimulation for fecal incontinence: What has been achieved: Current status
Matzel K.E.
Acta Chirurgica Iugoslavica , 2010, DOI: 10.2298/aci1003067m
Abstract: INTRODUCTION: The indications for sacral nerve stimulation (SNS) for fecal incontinence expanded during the last decade. This report aims to analyze the clinical outcome of the current pragmatic use of sacral nerve stimulation in the treatment of fecal incontinence caused by various pathophysiological conditions. Secondly it intends to explore the most recent use of SNS in patients presenting with sphincteric lesions. METHOD: The literature was searched using Medline and Cochrane databases. The search was limited to publications in English. For the analysis, studies with less than 25 patients were excluded. For the presentation of SNS in patients with sphincter defects, all papers were included. RESULTS: Thirteen publications were included in the analysis of clinical outcome of SNS. Ten papers were identified reporting about the application of SNS in patients presenting with a morphological sphincter lesion. The most common outcome measures of clinical efficacy were frequency of incontinence and Cleveland Clinic Incontinence Score. All studies demonstrated a highly improved function, in all outcome measures used. The improvement was significant. The results are reproducible. Also in patients with sphincteric gaps ranging form 17 to 180 degree SNS was clinical efficient. The size of the lesion had not impact on the outcome. CONCLUSION: Sacral spinal nerve stimulation has evolved to become a clinical efficient therapy applicable in a wide spectrum of causes leading to fecal incontinence. It is now considered to be an essential part of the current surgical treatment algorithm for fecal incontinence.
Effects of Dietary Regimens and Brown-Egg Pullet Strain on Growth and Development
K.E. Anderson
International Journal of Poultry Science , 2010,
Abstract: This study consisted of; two strains of brown-egg pullets, the Hy-Line (HB) and H&N (BN) Brown were raised on three different dietary regimens resulting in a 2 x 3 factorial design. The three different regimens were a standard Step-down Protein Regimen (SDP) comprised of a 20% CP Starter, 0-6 week, 18% CP Grower 1, 7-12 week and 16% CP Grower 2, 13-18 week; a Step-up Protein Regimen (SUP9) comprised of a 12% CP Starter, 0-9 week, 16% CP Grower 2, 10-16 week and 18% CP Grower 1, 17-18 week and a Step-up Protein Regimen (SUP12) comprised of a 12% CP Starter, 0-12 week, 16% CP Grower 2, 13-16 week and 18% CP Grower 1, 17-18 week. The pullets were housed in an environmentally controlled rearing facility with trideck battery cages. Feed consumption and body weights were measured bi-weekly and mortality was recorded daily. At 17 week of age a sample of 20 pullets from each strain and regimen combination were randomly selected and brought to the laboratory for body composition analysis. At 18 week the HB and BN strains only differed in livability with the HB having a 4.2% greater (p<0.05) liveability than the BN pullets. There was a stepwise reduction (p<0.05) in total protein intake from the SDP, SUP9 and SUP12, however, energy, Ca, P and lysine consumption were comparable. The SUP9 and SUP12 feeding regimens resulted in significantly (p<0.05) lower BW than the SDP regimen pullets. The SUP12 regimen significantly reduced sternum length below that obtained with the SDP or SUP9 program 11.0 vs. 11.2 and 11.3 cm, respectively. Tibial breaking strength was no different between the strains or regimens. This study shows that pullets reared on SUP regimens would have lower body weights with few differences in body composition percentages. Indicating that reduced dietary protein and energy would result in smaller pullets with comparable body composition.
Acute normovolaemic haemodilution - 2 case studies : clinical communication
K.E. Joubert
Journal of the South African Veterinary Association , 2012, DOI: 10.4102/jsava.v79i1.241
Abstract: Acute normovolaemic haemodilution (ANH) is a technique used to preserve a patient's owns red blood cells and reduce the incidence of heterogeneous blood transfusion. This paper describes the use of the technique in a dog and a kitten. A significant benefit of ANH can be shown in the canine case presented. The dog lost 1800m of blood during surgery but the haematocrit was only reduced to 33% 6 hours after the end of surgery. The kitten, however, did not benefit from ANH. It lost a small volume of blood during surgery and developed complications. This paper also describes some of the potential complications that may occur. To the best of my knowledge, this is the 1st clinical description of ANH in a dog and a cat.
The hidden dangers of anaesthetic machines : to the editor
K.E. Joubert
Journal of the South African Veterinary Association , 2012, DOI: 10.4102/jsava.v70i4.781
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