Time filter

Source Type

Cheyyar, India

Subash N.,Indian Council of Agricultural Research | Ram Mohan H.S.,Cochin University of Science and Technology | Banukumar K.,Arts College
Computers and Electronics in Agriculture | Year: 2011

Drought indices (DI) are an useful tool for assessing different sectarian droughts. Standardized Precipitation Index (SPI) has been used worldwide to assess/monitor the onset, active phase, cessation and severity of drought. Normalized Difference Vegetation Index (NDVI) provides a comprehensive vegetation dynamics, which directly linked with rainfall received in a particular region. Indo-Gangetic Region (IGR), providing employment and livelihood to tens of millions of rural families directly or indirectly and rice (Oryza sativa L.)-wheat (Triticum aestivum L.) (RW) system of the Indo-Gangetic Plains (IGP) contributes 80% of the total cereal production and is critical to food security of the region. This study tries to verify the applicability of water-vegetative indices viz., SPI, Rainfall Index (RI) and NDVI for drought assessment of rice-wheat system productivity over IGR-India. The relationship between monsoon rainfall and NDVI shows that at around 1100. mm rainfall, the NDVI reached saturation point and no further significant increase in NDVI with increase of rainfall is noticed. Even though, there was a positive correlation of seasonal monsoon rainfall and average NDVI, conflicting results are noticed between monthly distribution of rainfall and monthly anomaly of NDVI over IGR States. It is noticed that June dif NDVI (actual NDVI-mean NDVI) contributes more to rice productivity followed by July. However, the combined effect of June, July and August, explains 15% of the variation of Kharif Rice Productivity Index (KRPI). As far as wheat is concerned, statistically significant relation was found between Wheat Productivity Index (WPI) and anomaly NDVI during December-March. This explains 35% of the variability in WPI. © 2011 Elsevier B.V. Source

Prabusankarlal K.M.,Bharathiar University | Thirumoorthy P.,Arts College
Journal of Medical Imaging and Health Informatics | Year: 2014

Ultrasound is a reliable technique for the early detection and diagnosis of breast cancer. Breast cancer is the second leading cancer responsible for the highest rate of mortality among women around the world. Earliest detection and diagnosis is proved to be the only way of curbing the breast cancer and to reduce the mortality rate. The automated Computer Aided Diagnosis systems are helpful for the physicians in diagnosing the presence of breast lesions and classifying them into benign and malignant. Methods proposed in diverse articles for preprocessing, segmentation, feature extraction and classification of breast lesions are reviewed and presented in this paper. Algorithms and databases employed at every stage of automated processing and evaluation parameters along with the results are also investigated. © 2014 American Scientific Publishers All rights reserved. Source

Karthikeyani V.,Arts College
Proceedings - 2014 International Conference on Intelligent Computing Applications, ICICA 2014 | Year: 2014

The number of cloud users has been growing everyday and it seems that scheduling of virtual machines in the cloud becomes an important problem to analyze. Lively consolidation of Virtual Machines is an efficient way to get better use of resources and power efficiency in Cloud data centers. Identifying when it is best to move VMs from a congested host is an aspect of Lively VM consolidation that directly influences the resource consumption and Quality of Service (QoS) delivered by the system. Server overloads is the basis of resource insufficiency and spoils the performance of applications which leads to affect the QoS. This paper focus on the importance of the detection of server overload and compares the various scheduling algorithms currently used for scheduling virtual machines and also proposes the design methodology of a new algorithm that helps to improve the resource utilization and at the same time energy efficiency. © 2014 IEEE. Source

Patil T.K.,Arts College | Talele M.I.,P.A. College
Journal of Nano- and Electronic Physics | Year: 2012

In the present investigation, crystals of Bismuth Iodate[Bi(IO3)3], Bismuth Iodide[BiI3] and Bismuth- Tri Sulphide [Bi2S3] were grown by a simple gel technique using single diffusion method. The optimum growth conditions were established by varying various parameters such as pH of gel solution, gel concentration, gel setting time, concentration of reactant etc. Gel was prepared by mixing sodium meta silicate (Na2SiO35H2O), glacial acetic acid (CH3COOH) and supernant bismuth chloride (BiCl3) at pH value 4.4 and transferred in glass tube of diameter 2.5 cm and 25 cm in length. The mouth of test tube was covered by cotton plug and kept it for the setting. After setting the gel, it was left for aging. After 13 days duration the second supernant K(IO3), KI3 and H2S water gas solution was poured over the set gel by using pipette then it was kept undisturbed. After 72 hours of pouring the second supernatant, the small nucleation growth was observed at below the interface of gel. The good quality crystals of [Bi(IO3)3], [BiI3] and [Bi2S3] were grown. These grown crystals were characterized by XRD, FTIR, Chemical Analysis and Electrical Conductivity. © 2012 Sumy State University. Source

Arthanareeswari M.,SRM University | Narayanan T.S.N.S.,Indian National Metallurgical Laboratory | Kamaraj P.,SRM University | Tamilselvi M.,Arts College
Journal of Coatings Technology Research | Year: 2012

Galvanic coupling technique is capable of producing coatings of desired thickness. Good quality coatings can be produced at low temperature. Galvanic coupling of mild steel (MS) with the other cathode materials such as titanium (Ti), copper (Cu), brass (BR), nickel (Ni), and stainless steel (SS) accelerates iron dissolution, enables quicker consumption of free phosphoric acid and facilitates an earlier attainment of point of incipient precipitation, resulting in a higher amount of coating formation. In the present investigation, potentiodynamic polarization and electrochemical impedance spectra on MS substrates phosphated using galvanic coupling are studied. This study reveals that MS substrates phosphated under galvanically coupled condition possess better corrosion resistance than the substrates phosphated under uncoupled condition. © ACA and OCCA 2011. Source

Discover hidden collaborations