Konark Institute of Science and Technology

Bhubaneshwar, India

Konark Institute of Science and Technology

Bhubaneshwar, India
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Behera S.K.,Aricent | Behera L.K.,Konark Institute of Science and Technology | Padhi P.,Konark Institute of Science and Technology | Nayak M.,Orissa Engineering College, Bhubaneswar
Advances in Intelligent Systems and Computing | Year: 2015

Spatial data infrastructures served through the Web combined with the ever increasing network and telecommunication capabilities, and made geospatial data largely available over the last few decades. In addition, providing semantic specifications to geospatial information, data sharing and interoperability have also been achieved. Consequently, effective and efficient implementation of the Web processing, data processing methods for geospatial information extraction, and knowledge discovery over the Web are a major challenge for various domains. This paper provides a basic framework to optimize the various components associated with the geoprocessing implementation using genetic algorithm © Springer India 2015.


Sunpriya Achary G.,Konark Institute of Science and Technology | Mohanty S.K.,State Pollution Control Board | Sahoo R.,Ravenshaw University | Pattanaik N.,State Pollution Control Board
Indian Journal of Environmental Protection | Year: 2012

The present study deals with the effect of urbanization and automobile emission on ambient air quality of Bhubaneswar city, Odisha. This paper examines the significant difference in seasonal variations of air pollutant concentrations in the city. RSPM (respirable suspended particulate matter), SPM (suspended particulate mater), sulphur dioxide (SO2), oxides of nitrogen (NOx) and CO were collected at 5 sites in Bhubaneswar. Monthly and seasonal variation of these pollutants are compared graphically for 2 consecutive year from November-08 to October-10. The annual average and range values have also been calculated. Using observed annual means and standard values of different parameters the exceedence factor for each pollutant was calculated in all selected locations. It has been observed that the concentrations of the pollutants are high in winter in comparison to summer or rainy seasons. In the present study it was noticed that the SPM, RSPM and CO levels at all selected sites exceeds the prescribed limits as stipulated by Central Pollution Control Board (CPCB). But the SO2 and NOx levels at all the sites found under prescribed limits of CPCB. From exceedence factor, the different pollutants are categorized into 4 categories. It was observed that RSPM at all locations for both the years fall under critical category. SPM in 2008-09 fall under critical category at 3 locations and rest 2 under high category. In 2009-10 SPM fall under high category for 4 locations and one location under critical category. SO2 at all locations in both the years are under low category. NOx in 2008-09 fall under moderate category at 3 locations and rest 2 locations in low category while in 2009-10 all locations fall under moderate category. CO in 2008-09 fall under critical category at 2 locations, high category at 2 locations and moderate at one location but in 2009-10 falls under critical category at 2 locations, high category at 2 locations and moderate at one location. © 2012 - Kalpana Corporation.


Achary G.S.,Konark Institute of Science and Technology | Mohanty S.K.,State Pollution Control Board | Sahoo R.,Ravenshaw University
Indian Journal of Environmental Protection | Year: 2011

Due to rapid urbanization of Bhubaneswar city, the population load is increasing sharply day by day. As a result ,the requirement of water for human activities is increasing. In return a huge amount of wastewater is generated and discharged into river Kuakhal and make it polluted. Thus people are forced to use ground water which is known to be safe for drinking. At present 40% people of Bhubaneswar depend on ground water. But unfortunately the ground water Is also getting polluted day by day. So it is high time to assess the ground water quality in Bhubaneswar. Nine different locations were chosen depending on population load and to cover all parts of Bhubaneswar .The samples were collected quarterly in the month of January-09, May-09 and September-09 to determine different physical, chemical and biological parameters. The seasonal variations of different parameters have been compared with the standard. From the results mean, standard deviation; correlation coefficient among different parameters has been studied. It is found that total hardness is highly correlated with chloride, conductivity and total dissolved solids. Similarly chloride is highly correlated with conductivity and total dissolved solids. Conductivity and total dissolved solids are highly correlated. The results are compared with standard values. © 2011 - Kalpana Corporation.


Padhi P.,Konark Institute of Science and Technology | Dash B.N.,Konark Institute of Science and Technology | Kar S.K.,Central Tool Room and Training Center
Journal of Nanotechnology | Year: 2011

The cavitation phenomenon is well known to lead to deagglomeration and uniform dispersion of nanoparticles in liquid metal. The nature of flow leading to deagglomeration, the rate of deagglomeration, and the effect of frequency of them has been systematically investigated. It is extremely difficult to experimentally know about them and thus modeling the phenomenon is indispensable. The same has been attempted in the present study. The present study attempts to model the process of deagglomeration and dispersion of ceramic nanoparticles in the vicinity of cavitation using FLUENT 6.2.16. For this a simple representative volume element has been modeled. © 2011 Payodhar Padhi et al.


Padhi P.,Konark Institute of Science and Technology | Kar S.,Central Tool Room and Training Center
Journal of Nanotechnology | Year: 2011

Addition of nano particles, even in quantities as small as 2 weight percent can enhance the hardness or yield strength by a factor as high as 2. There are several methods for the production of metal matrix nanocomposites including mechanical alloying, vertex process, and spray deposition and so forth. However, the above processes are expensive. Solidification processing is a relatively cheaper route. During solidification processing, nano particulates tend to agglomerate as a result of van der Waals forces and thus proper dispersion of the nano particulate in metal matrix is a challenge. In the present study a noncontact method, where the ultrasonic probe is not in direct contact with the liquid metal, was attempted to disperse nanosized SiC particulates in aluminum matrix. In this method, the mold was subjected to ultrasonic vibration. Hardness measurements and microstructural studies using HRTEM were carried out on samples taken from different locations of the nanocomposite ingot cast by this method. © 2011 Payodhar Padhi and Sachikanta Kar.


Padhi P.,Konark Institute of Science and Technology | Dash B.N.,Konark Institute of Science and Technology | Mohanty P.,ITER | Satapathy B.K.,National Aluminium Company Ltd | Kar S.,Central Tool Room and Training Center
Key Engineering Materials | Year: 2013

There are several methods for the production of metal matrix nano composites including mechanical alloying, vertex process and spray deposition. However, the above processes are expensive. Solidification processing is a relatively cheaper route. However, during solidification processing nano particulates tend to agglomerate as a result of van der Waals forces and thus proper dispersion of the nano-particulate in metal matrix is a challenge. Many researchers have dispersed nanoparticles in metal matrices by ultrasonic casting. However their technique has several drawbacks such as the oscillating probe, which is in direct contact with liquid metal, may dissolve in the liquid metal and contaminate it. Moreover, the extent of dispersion is not uniform. It is maximum near the probe and gradually decreases with distance away from the probe. The oscillating probe is also removed from the liquid metal before cooling and solidification begins leading to partial reagglomeration of nanoparticles. To overcome these difficulties a non-contact method, where the ultrasonic probe is not in direct contact with the liquid metal, was used in an attempt to disperse nano-sized Al2O3 particulates in an aluminium matrix. In this method the mold was subjected to ultrasonic vibration. The crystallite size of Al2O3 was mostly below 10 nm. Nano composite having 1-1.5 wt. % of Al2O3 was cast. From HRTEM studies it is observed that the Al2O3 particles are distributed uniformly except at the grain boundaries. In micro scale the hardness is uniform throughout the samples. This is due to cavitation process as well as pushing of the nano-particles during the growth of the grains. In the present study the process of cavitation accounts all first-order effects i.e., phase change, bubble dynamics, turbulent pressure fluctuations, and noncondensable gases for deaglomeration and distribution of particles throughout the domain to get uniform distributions. © (2013) Trans Tech Publications.


Kumar Behera S.,Utkal University | Kumar Behera L.,Konark Institute of Science and Technology | Madhusudana C.,Alcatel - Lucent | Padhi P.,Konark Institute of Science and Technology
International Conference on Computing, Communication and Automation, ICCCA 2015 | Year: 2015

This paper proposes a multi-carrier waveform based intra-operator spectrum scheduling concept for 3G and 4G wireless communication systems for Femto and Macro deployments. The concept considers the flexible air-interface of 5G and can support coordinated intra-operator spectrum scheduling and sharing in various scenarios. Furthermore, the proposed concept allows high flexibility both in spectrum allocation and adaptation of the transmission signals to support the large variety of devices. The key elements of the proposed concept includes the determination of the technology needs in 3G, 4G Femto and macro deployments and incoming 5G network, then a two-stage allocation procedure. There is a fragmented spectrum usage, and adaptation of multi-carrier waveforms. Preliminary hypothetical measurements show the user data throughput is well managed and in fact is enhanced with the introduction of a unified spectrum pool manager having a single pool of complete spectrum band for 3G and 4G. Results have shown that the proposed concept allows efficient and flexible fragmented spectrum usage, with robustness against the interference levels and synchronization issues. The operator will be able to provide better services than the existing 3G networks as the spectrum will be allocated on need basis from a common pool and so it is possible that the end user will get a better data rate than existing. As the end user satisfaction will be better, so it will attract more customers resulting good revenue for operator. © 2015 IEEE.


Mula S.,National Institute of Technology Rourkela | Mula S.,Indian Institute of Technology Kharagpur | Pabi S.K.,Indian Institute of Technology Kharagpur | Koch C.C.,North Carolina State University | And 2 more authors.
Materials Science and Engineering A | Year: 2012

Workability and mechanical properties of the ultrasonically cast Al-X wt% Al 2O 3 (X=2, 3.57 and 4.69) metal matrix nanocomposites were reported in the present investigation. The Al-Al 2O 3 (average size ~10nm) composites showed maximum reduction ratios of 2, 1.75 and 1.41 at room temperature, and 8, 7 and 6 at 300°C. The elastic modulus, nanoindentation hardness, microhardness and Vickers hardness were measured on the as-cast, cold and hot rolled specimens. The tensile properties were also evaluated for the as-cast composites for different wt% of reinforcement. The microstructural examination was done by optical, scanning and transmission electron microscopy. The strength and workability of the nanocomposites were discussed in the light of dislocation/particle interaction, particle size and its concentration, inter-particle spacing and working temperature. 2wt% of Al 2O 3 reinforcement showed better combination of workability and mechanical properties possibly due to better distribution of particulates in the matrix. © 2012 Elsevier B.V.


Behera D.K.,Konark Institute of Science and Technology | Behera P.M.,Siksha ‘O’ Anusandhan University | Acharya L.,Siksha ‘O’ Anusandhan University | Dixit A.,Institute of Life science | Padhi P.,Konark Institute of Science and Technology
Journal of Biomedicine and Biotechnology | Year: 2012

Influenza is an infectious disease caused by RNA viruses of the family Orthomyxoviridae. The new influenza H1N1 viral stain has emerged by the genetic combination of genes from human, pig, and bird's H1N1 virus. The influenza virus is roughly spherical and is enveloped by a lipid membrane. There are two glycoproteins in this lipid membrane; namely, hemagglutinin (HA) which helps in attachment of the viral strain on the host cell surface and neuraminidase (NA) that is responsible for initiation of viral infection. We have developed homology models of both Hemagglutinin and Neuraminidase receptors from H1N1 strains in eastern India. The docking studies of B-Sialic acid and O-Sialic acid in the optimized and energy-minimized homology models show important H-bonding interactions with ALA142, ASP230, GLN231, GLU232, and THR141. This information can be used for structure-based and pharmacophore-based new drug design. We have also calculated ADME properties (Human Oral Absorption (HOA) and HOA) for Oseltamivir which have been subject of debate for long. © 2012 Deepak Kumar Behera et al.


Khuntia P.K.,Konark Institute of Science and Technology | Sahu B.,Konark Institute of Science and Technology | Mohanty C.S.,Konark Institute of Science and Technology
Proceedings of the 2012 World Congress on Information and Communication Technologies, WICT 2012 | Year: 2012

The digital channel equalizers are located in the front end of the receivers to avoid the effect of Inter-Symbol-Interference (ISI). In this paper, the equalization problem has been viewed as an optimization problem. In past the Least Mean Square Algorithm (LMS), Recursive least square (RLS), Artificial Neural Network (ANN) and Genetic Algorithm (GA) have been successfully employed for nonlinear channel equalization. The LMS, RLS and ANN techniques are derivative based and hence are chances that the parameters may fall to local minima during training. Though GA is a derivative free technique, it takes more converging time. We propose a novel equalization technique based on Differential Evolution (DE). DE is an efficient and powerful population based stochastic search technique for solving optimization problems over continuous space and hence the channel equalization performance is expected to be superior. © 2012 IEEE.

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