Anjan Kumar Patra

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High-fidelity computational simulation can be an invaluable tool in planning strategies for hazard risk mitigation. The accuracy and reliability of the predictions are crucial elements of these tools being successful. We present here a new simulation tool for dry granular avalanches using several new techniques for enhancing numerical solution accuracy.(More)
To Dave Schaeffer, who shows how mathematics can impact science. Abstract. We present a framework for modeling a dry geophysical mass of granular material – a debris or volcanic avalanche or landslide – flowing over an erodible surface. We also describe a computing environment that incorporates topographical data into a parallel, adaptive mesh computational(More)
INTRODUCTION Androgenetic alopecia (AGA) is characterized by miniaturization of the hair follicle, leading to vellus transformation of the terminal hair follicle. It is caused by interactions between androgens, several genes, and environmental factors with hair follicles. Benign prostatic hyperplasia (BPH) is highly prevalent among elderly men but(More)
ABStRAct Land uses has significant impact on soil biological properties that incessantly intimates the soil quality change and are assessed by soil microbial and biochemical indicators, as they are highly sensitive to change in environment. The purpose of this study was to investigate the impact of land use on soil enzyme activities and gene diversity in(More)
In this paper, we present new ideas to greatly enhance the quality of uncertainty quantification in the DDDAS framework. We build on ongoing work in large scale transport of geophysical mass of volcanic origin – a danger to both land based installations and airborne vehicles. The principal new idea introduced is the concept of a localized Bayes linear model(More)
This paper address the design of output feedback PID controller to deliver insulin via an implantable micro insulin dispenser for insulin dependent diabetes mellitus (IDDM) patients. For synthesis of the controller, a 9 th order linear state space model of the multivariable nonlinear dynamic glucose insulin process of the IDDM patient has been used. The(More)
Primary production refers to evaluation of the capacity of an ecosystem to build up, at the expense of external energy both radiant and chemical ,primary organic compounds of high chemical potentials for further transformation and flow to higher system levels. The highest values of gross, net primary production and biotic respirations were obtained during(More)
  • Biennial Meeting, Canada Ottawa, A David, Wanhong Swayne, A A Yang, A Voinov +8 others
  • 2010
In this paper we study the impact of errors and uncertainties in digital elevation models on the analysis of hazardous mass flows at Galeras volcano in Colombia. The increasing use of computer models and software has made it imperative that the effect of errors in digital elevation models which crucially determine the flow characteristics be quantified. We(More)