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Articles by S. Senthilkumar
Total Records ( 3 ) for S. Senthilkumar
  S. Senthilkumar and J. William
  A Mobile Ad hoc Network (MANET) is an infrastructure less but capable of self configuring network that contains wide range of wireless devices that can move freely in any direction and each device can act as a router or end host. The Mobile Ad Hoc network is too big and the communicating nodes can be out of range. So, each node in MANET can act as router and forward the data to neighbour and the data reach the destination. The relay traffic consumes the resources and power. But, the power and the resources are very limited, so each node needs to conserve them for its own purpose. The presence of selfish nodes may affect Quality of Service (QoS) especially reliability and data transmission. A demand arises to detect the selfish nodes and neglect them to improve the quality of service of a MANET. In this study, an improved AODV algorithm is proposed to detect the selfish nodes and a new routing mechanism is proposed for traffic relay. The proposed algorithms are simulated and they showed better quality of service by enhancing packet delivery ratio and reducing packet delay.
  N. Nithya , K. Chandrakumar , V. Ganesan and S. Senthilkumar
  Cyclophosphamide (CP) is one among the important therapeutic chemotherapy drug used worldwide. Damage to normal tissues due to toxic metabolites limits the usage of CP efficiently for treating various cancers. In the present study, hepatoprotective effect of Momordica charantia Linn. (Cucurbitaceae) against CP induced hepatotoxicity in rats was evaluated. Hepatocellular damage in rats was induced by injecting CP i.p. (total of 200 mg kg-1, b.wt.) for 2 days. Momordica charantia fruit aqueous extract (MCE) (300 mg kg-1 b.wt.) was administered orally for 12 days for treatment. Protective effect of MCE was evaluated by assessing the liver marker enzymes such as AST, ALT, ALP, LDH and γ-GT in serum, AST and ALT in liver tissues and biochemical parameters such as total protein, urea, creatinine, uric acid, total and direct bilirubin. Liver marker enzymes and clinical chemistry parameters were significantly altered in CP intoxication. These alterations were significantly normalized in animals administered with MCE. Protective effect of MCE could be due to radical-scavenging and antioxidant properties of the MCE. MCE could had been demonstrated these properties due to the presence of phytochemical components that include polyphenols, alkaloids, terpenoids, glycosides and tannins. Present findings supported that the treatment with MCE could be helpful against hepatocellular damage, owing to its hepatoprotective property.
  R. Ponalagusamy and S. Senthilkumar
  In this study, an adaptable algorithm for simulating CNN arrays is implemented using various means such as Arithmetic Mean (AM), Centroidal Mean (CM), Harmonic Mean (HM), Contra Harmonic Mean (CoM), Heronian Mean (HeM), Geometric Mean (GM) and Root Mean Square (RMS). The role of the simulator is that it is capable of performing raster simulation for any kind as well as any size of input image. It is a powerful tool for researchers to investigate the potential applications of CNN. This study proposes an efficient pseudo code exploiting the latency properties of Cellular Neural Networks along with well known Runge-Kutta (RK) fourth order numerical integration algorithms. Simulation results and comparison have also been presented to show the efficiency of the various means in numerical integration algorithms. It is observed that the RK-Arithmetic Mean (AM) outperforms well in comparison with other means.
 
 
 
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