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Chatterjee R.,Indic Institute of Design and Research | Routray M.,Silicon Institute of Technology
Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering | Year: 2012

MANET (Mobile Ad hoc Network) is a form of ad hoc network consisting of mobile nodes. The behavior of such network is autonomous and it gets connected to several types of network by using wireless connection. As no nodes in this network infrastructure are stationary, nodes link each other to participate in transmission. However nodes in the family may turn bad (malicious) or external attacking nodes disrupt secured routing bringing instability to network and sometimes increasing threat to applications of importance for e.g. both military and civilian applications. In both the above cases the nodes needs to be punished. In this paper we use a Node Stability System (NSS) to propose methods of identification of singular and co-operative Black hole nodes and provide steps to recover the network from such vulnerabilities. © 2012 ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering. Source


Swain T.,Indic Institute of Design and Research | Mohanty P.,Utkal University
Synthesis and Reactivity in Inorganic, Metal-Organic and Nano-Metal Chemistry | Year: 2011

Substitution reaction of complex, trans-[CoCl 2(en) 2]Cl, with sulfur containing agent L-cystine, has been studied 1.0 × 10 -1 mol dm -3 aqueous perchlorate medium at various temperatures (30°C to 50°C) and pH (4.45 to 3.30) using Uv-vis spectrophotometer. The products are characterized by physico-chemical and spectroscopic methods datasets at various pH and temperatures. From this method, cis-[CoCl(en) 2(H 2O)] 2+, hydrolysis of trans-[CoCl 2(en) 2] +, has formed complex to L-cystine, acts as bidentate ligand, through one Co-S and Co-N bonds at low pH (3.30). At high pH (3.75 to 4.45), this complex has formed product through Co-N and Co-O bonds. The activation parameters E a, ΔH# and ΔS# have been determined. The products, SNi, and reversible rate constants have been evaluated. Copyright © Taylor & Francis Group, LLC. Source


Swain T.,Indic Institute of Design and Research | Mohanty P.,Utkal University
Journal of Sulfur Chemistry | Year: 2010

Substitution reactions of complex [PtI(dien)] + (where, dien=diethylenetriamine ) with sulfur-containing peptide l-cystine has been studied in 1.0 × 10 -1M aqueous perchlorate or acetate medium between 298 ≤ T (K)≤323 and 2.30 ≤ pH ≤ 4.45 using a UV-visible spectrophotometer. Products obtained have characterized from their physico-chemical and spectroscopic methods at various pH and temperatures. From this characterization, products have indicated that [PtI(dien)] + has formed a complex with l-cystine and acts as a bidentate ligand, through Pt-S bond at 2.30 ≤ pH ≤ 3.30 and through Pt-N and Pt-S bond of cystine in 3.95 ≤ pH ≤4.45. At 2.30 ≤ pH ≤3.30, ring opening and closing of dien have occurred at 308 and 323 K, respectively, and the same has happened at pH ≤ 3.95. All reactions have followed the rate law - d[mixture]/dt=(k 1+k 2 [cystine]) [Pt(II)], where k 2 denotes the second-order rate constant. Activation parameters E a,Δ H# and ΔS# have been determined. Product formation and reversible and forward reaction rate constants have also been evaluated. © 2010 Taylor & Francis. Source


Swain T.,Indic Institute of Design and Research
Journal of Thermal Analysis and Calorimetry | Year: 2011

A new inorganically template metaphosphate of Co(II) complex has been synthesized and characterized by different measurements such as DSC, FT-IR, C-H-N-O-S, ESR, TG-DTA and X-RD. Differential Scanning Calorimeter (DSC) elucidated negative specific heat of the system and has used to evaluate some thermo dynamical constants like activation energy (E a), frequency factor (A), enthalpy and entropy of that system. The specific heat capacity of the system is measured both in atmospheric O 2 and N 2 atmosphere at different heating rates of 278, 283, 293 and 298 K min -1 in room atmosphere and 288 K min -1 in N 2 atmosphere. © 2010 Akadémiai Kiadó, Budapest, Hungary. Source


Swain T.,Indic Institute of Design and Research
Journal of Superconductivity and Novel Magnetism | Year: 2012

An inorganically template metaphosphate of Co(II) complex has been synthesized and thermal properties have been studied at a low temperature up to 173 K from 298 K by the Differential Scanning Calorimeter (DSC). The specific heat capacity is measured in atmospheric O 2 at a heating rate of 283 Kmin -1 from 298 K and kept constant at 173 K for 4 minutes then reversed to 298 K again. The bulk critical temperature of superconductivity of metaphosphatecobalt( II) salt was found at 173 K. © Springer Science+Business Media, LLC 2012. Source

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