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Search Results: 1 - 10 of 317534 matches for " N.K.Mandal "
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Optimization of machining parameters of turning operations based on multi performance criteria
Abhijit Saha,N.K.Mandal
International Journal of Industrial Engineering Computations , 2013,
Abstract: The selection of optimum machining parameters plays a significant role to ensure quality of product, to reduce the manufacturing cost and to increase productivity in computer controlled manufacturing process. For many years, multi-objective optimization of turning based on inherent complexity of process is a competitive engineering issue. This study investigates multi-response optimization of turning process for an optimal parametric combination to yield the minimum power consumption, surface roughness and frequency of tool vibration using a combination of a Grey relational analysis (GRA). Confirmation test is conducted for the optimal machining parameters to validate the test result. Various turning parameters, such as spindle speed, feed and depth of cut are considered. Experiments are designed and conducted based on full factorial design of experiment.
Occupational Health - An Investment Benefits of Promoting Employee Health
N.K. Chandrasekaran
Indian Journal of Occupational and Environmental Medicine , 2003,
Chavhan N.K.
International Journal of Science, Environment and Technology , 2012,
Nanocomposite coatings based on Ti-N-Cr/Ni-Cr-B-Si-Fe, gained by two technologies
N.K. Erdybayeva
Journal of Nano- and Electronic Physics , 2009,
Abstract: The first results of manufacturing and investigations of a new type of nanocomposite protective coatings are presented. They were manufactured using a combination of two technologies: plasma-detonation coating deposition with the help of plasma jets and thin coating vacuum-arc deposition. We investigated structure, morphology, physical and mechanical properties of the coatings of 80-90 μm thickness, as well as defined the hardness, elastic Young modulus and their corrosion resistance in different media. Grain dimensions of the nanocomposite coatings on Ti-N-Cr base varied from 2.8 to 4 nm. The following phases and compounds formed as a result of plasma interaction with the thick coating surface were found in the coatings: Ti-N-Cr (200), (220), y-Ni3-Fe, a hexagonal Cr2-Ti, Fe3-Ni, (Fe, Ni)N and the following Ti-Ni compounds: Ti2Ni, Ni3Ti, Ni4Ti, etc. We also found that the nanocomposite coating microhardness increased to H = 31.6 ± 1.1 GPa. The Young elastic modulus was determined to be E = 319 ± 27 GPa – it was derived from the loading-unloading curves. The protective coating demonstrated the increased corrosion resistance in acidic and alkaline media in comparison with that of the stainless steel substrate.
Software as A Service: Analysis of ‘Google Sites’ as KM Tool for Academic Environment
Farooqui N.K.
Communications of the IBIMA , 2008,
Abstract: This paper analyzes different factors related with a newly launched ‘Google Sites for suitability as the knowledge management tool in academic environment. The cost of software purchase and its maintenance is a big issue for academic and business world. The emergence of high speed Internet has given rise to new concepts like software as a service. SaaS (Software as a Service) has a new way out, the software is made and maintained by the software firm and used by the organization (Educational / Business). If the software is provided by the Google then it is double benefit for any organization. Paper discusses different factors like privacy, scalability, support, Technology, ease of use, provision of essential services, Internal communication facilities, searching capability, accessibility, control and administration, licensing location & management and Cost of 'Google Sites' for implementing it as a KM tool in academic environment.
Empirical Computation Of Rs-Analysis For Building Robust Steganography Using Integer Wavelet Transform And Genetic Algorithm
Shamimunnisabi, Cauvery N.K
International Journal of Engineering Trends and Technology , 2012,
Abstract: The proposed system presents a novel approach of building a secure data hiding technique of Steganography using Integer Wavelet Transform along with Genetic Algorithm. The prominent focus of the proposed work is to develop Resistant Secure-analysis proof design with highest imperceptibility. Optimal Pixel Adjustment Process is also adopted to minimize the difference error between the input cover image and the embeddedimage and in order to maximize the hiding capacity with low distortions respectively. The analysis is done for mapping function, Peak Signal to Noise Ratio, image histogram, and parameters of RS analysis. The implementation results highlights that the proposed security measure basically gives better and optimal results in comparison to prior research work conducted using wavelets and Genetic Algorithm
Comparison of BER of OFDM System using QPSK and 16QAM over Multipath Rayleigh Fading Channel using Pilot-Based Channel Estimation
Sanjay Khadagade,N.K.Mittal
International Journal of Engineering and Advanced Technology , 2013,
Abstract: This paper investigate and compare the various channel estimation techniques based on pilot arrangement with the communication system that uses QPSK and 16-QAM to transmit information using OFDM over multipath Rayleigh fading channel. Bit Error Rate (BER) has been considered as the performance index in all analysis. In the block type pilot arrangement, the performance of channel estimation is analyzed with three different algorithms: LS, LMMSE and SVD algorithm. In comb type pilot arrangement, the paper introduces three method of interpolation: linear interpolation, second order interpolation and cubic spline interpolation for channel estimation. The analysis has been carried out with simulation studies under MATLAB environment.
Towards Knowledge Based Society
Abdulaziz S. Almazyad,Farooqui N.K.
Lecture Notes in Engineering and Computer Science , 2009,
Study on Pathogenicity of the Aspergillus species in experimentally immunosuppressed mice
Chhabra,D. and Dhakad,N.K.
Veterinary World , 2008,
Abstract: Aspergillus, a saprophytic mould, distributed widely in the environment is a frequently recognized etiological agent in a number of disease conditions especially in immunocompromised patients. Mice untreated as well as immunocompromised by administering cortisone, were inoculated intraperitoneally with spores of Aspergillus spp. The administration of cortisone rendered mice highly susceptible to fatal visceral aspergillosis. Heat killed spores produced no evident lesions in control or experimental mice. [Veterinary World 2008; 1(3.000): 69-70]
Evaluation of some plant extracts in the management of blue mould rot of mandarin oranges
Indian Phytopathology , 2012,
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