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Articles by M. Rajkumar
Total Records ( 3 ) for M. Rajkumar
  P. Subburaj , L. Ganesan , K. Ramar and M. Rajkumar
  Economic Load Dispatch (ELD) is one of the main functions of modern Energy Management System (EMS), which determines the optimal real power settings of generating units with an objective of minimizing the total fuel cost. In all practical cases, the fuel cost of generators can be represented as a quadratic function of real power generation. In fact, discontinuity may also be observed in thermal power plants due to valve point loading. The conventional optimization methods require the objective functions in continuous differentiable form, therefore they fail to provide global minima. The Evolutionary Computation (EC) methods can handle non-differentiable and non-convex objective functions and give global or near global optimum solutions. Evolutionary Computation methods such as Genetic Algorithm (GA), Evolutionary Programming (EP) are applied to economic dispatch problem. By avoiding the coding and decoding process of transformations in GA, use of EP among other EC methods resulted in less population size and number of iterations. A MATLAB program has been developed for Evolutionary Programming to solve economic load dispatch problem. In this paper EP based ELD problem is solved with stochastic method for competition and selection.
  K.P. Kumaraguru Vasagam , M. Rajkumar , Jean-Paul Trilles and T. Balasubramanian
  Lernaea cyprinacea, a parasitic cyclopoid copepod, is reported parasitizing sailfin molly Poecilia latipinna breeders, cultured in the Center of Advanced Study in Marine Biology, Parangipettai (India). The fish were severely infected on their body surface with the highest number of 38 parasites per host. Feeding and reproductive activities, including spawning, stopped following parasitic infection. The parasites are females unsegmented, sub-cylindrical shaped and 20 mm in length. They are provided with paired appendages including prominent egg sacs. This is the first report on their occurrence in the cultured ornamental fish P. latipinna, in India. Lernaea infection was successfully controlled by gradually changing the water salinity to 10‰.
  A. Saravanakumar , M. Rajkumar , J. Sesh Serebiah and G.A. Thivakaran
  The zooplankton was assessed quantitatively and qualitatively in regard to their abundance in creek waters at three sites along the western mangrove of Kachchh, west coast of India, for a period of two years (1999-2000). Totally 69 forms of zooplankton were recorded currently from 3 stations. Of these, the copepods formed the dominant group. The population density in all the three sites varied from 30,000 to 210,000 organisms m-3. Surface water temperature varied from 17 to 37°C. Salinity varied from 34.0 to 44.0‰ and the pH ranged between 7.0 and 8.9. Variation in dissolved oxygen content was from 3.42 to 5.85 mg L-1. These semi arid zone mangrove creek area having high densities were recorded during winter season.
 
 
 
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