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Leelavathi G.,Vivekananda Institute of Technology | Shaila K.,Vivekananda Institute of Technology | Venugopal K.R.,University Visvesvaraya College University
IEEE Region 10 Annual International Conference, Proceedings/TENCON | Year: 2017

In public key cryptography, RSA algorithm has been used for a long time, but it does not meet the constraints of WSNs. Elliptic Curve Cryptography(ECC) has been employed recently because of its high security for same length bit. ECC point multiplication operation is time consuming which affects the speed of encryption and decryption of data. In this paper, we propose the point multiplication using Montgomery multiplication technique that achieves considerable speed and with reduced area utilization. The ECC is first simulated on different FPGA devices, with key length 112 and 163 bits and the area-speed tradeoff is compared. ECC algorithm is implemented with software and hardware choosing Artix 7 XC7a100t-3csg324 FPGA which supports key lengths of 112 and 163 bits. The proposed ECC algorithm is modeled using VHDL and synthesized on Spartan 3 and 6, Virtex 4, 5 and 6 and Artix 7 before the hardware implementation on Atrix 7. The design satisfies the needs of resource constrained WSNs devices with equal key length and data size, the device utilization is within 13 percentage. © 2016 IEEE.

Khaleel Ahmed A.N.,Vivekananda Institute of Technology
Materials Today: Proceedings | Year: 2015

Curing process of an epoxy thermoset is thermally-activated and temperature-dependent, study on cure kinetics and its parameters are important to optimize the cure cycles. Emphasis is made to determine cure kinetic parameters of 913/ G801 carbon epoxy prepeg material, which is widely used in commercial aerospace structures. The cure kinetic parameters are investigated by differential scanning calorimetry (DSC) analysis. Dynamic Scanning experiments were carried out to obtain the kinetic parameters for establishing a phenomenological cure reaction model. The activation energy (Ea) is calculated based on Kissinger and Flynn-Wall-Ozawa models, both Kissinger's and Flynn-Wall-Ozawa plots show very good linear relationship between parameters based on the experimental data. This study provides the designers a useful data to analyze the cure behavior and to develop optimum cure cycles. © 2015 Elsevier Ltd.

Sirohi R.,Vivekananda Institute of Technology | Kim D.H.,Kunsan National University | Yu S.-C.,Kunsan National University | Lee S.H.,Kunsan National University
Dyes and Pigments | Year: 2012

Two mono anchoring dye molecules were bridged together to give a new di-anchoring bis-merocyanine dye which possessed a non-planar conformation on a TiO2 surface, a feature that impedes intermolecular aggregation of the dye in the adsorbed state. This dye also showed enhanced molar absorptivity and increased adsorption on TiO2. A dye sensitized solar cell based on the bis-merocyanine dye yielded enhanced power conversion efficiency of 6.1%. © 2011 Elsevier Ltd. All rights reserved.

Dash S.K.,Institute of Physics, Bhubaneswar | Kant S.,Institute of Physics, Bhubaneswar | Dalai B.,Eastern Academy of Science and Technology | Swain M.D.,Orissa Engineering College, Bhubaneswar | Swain B.B.,Vivekananda Institute of Technology
Indian Journal of Physics | Year: 2014

Barium zirconium titanate (BaZr0.08Ti0.92O 3) (BZT) ceramics have been prepared by solid state reaction and high energy ball milled (dry and wet) processes. X-ray diffraction has shown the presence of single phase with an orthorhombic structure at room temperature. Addition of Zr strongly influences the crystal structure and electrical properties of ceramics. Analysis of dielectric constant (εr) and loss tangent (tanδ) as a function of temperature shows that high energy ball milled BZT samples have higher dielectric constant (εr > 8,000) and low dielectric loss factor (tanδ ∼ 0.087 %), as compared to that of solid state reacted one (εr < 2,500 and tanδ ∼ 0.145 %) at curie temperature (Tc). The phase transition temperature of BZT ceramics with 8.0 mol % Zr content has been found to be 120 °C in solid state reacted sample and about 100 °C in high energy ball milled sample. Surface morphology has confirmed small grain size (<100 nm) in BZT ceramics prepared by wet milled process. © 2013 IACS.

Dash S.K.,Regional Institute of Education NCERT | Karunamoy T.,Regional Institute of Education NCERT | Dalai B.,Eastern Academy of Science and Technology | Swain B.B.,Vivekananda Institute of Technology
Indian Journal of Physics | Year: 2012

The mechanism of dipolar complexation involving TBP and three alcohols namely 1-hexanol, 1-heptanol and 1-octanol in an apolar medium benzene is investigated by three direct methods using dielectric measurement data at frequency 455 kHz and at temperature 303.16 K. The parameters evaluated in these systems are the interaction dipole moment, induced polarization and apparent complex formation constant for thermodynamically most favoured stoichiometry of 1:1 complexes. Two conclusions resulted from the study. Firstly, the complexation is predominantly due to polarization effect involving charge redistribution and secondly, the complex formation is most favoured in 1-hexanol system. © 2012 Indian Association for the Cultivation of Science.

Mohapatra R.K.,Vivekananda Institute of Technology
Proceedings of the 12th International Ferroalloys Congress: Sustainable Future | Year: 2010

Contribution is the difference between the net sales realization and cost of production. Cost of production in a Ferro alloys manufacturing depends upon the raw materials used, power consumption, and other variable expenses. In Ferro alloys production ore is the major rawmaterial which is available in different grades. Metallic contents are different at different faces, at different depths and at different locations of the mines. Contribution is a function of Sales Realization and Cost of Production. Cost of Production is function of Rawmaterial consumption, Power consumption, Rawmaterial procurement price, power tariff, and other variable expenses. Cost of material can be reduced by 1. Using the right rawmaterial, in right quantities. 2. Obtaining the right blend of ore from the mines based on the quantity of ore required or to be supplied; cost of ore, and the customer satisfaction. Optimizing the Rawmaterial mix has a major share in maximizing the contribution as the slag volume increases with higher gang material in the charge. Use of low-grade ore, ore with higher percentage of alumina along with flux, may increase the slag volume. Since the cost of low-grade ore is less, compared to that of high-grade ore, the rawmaterial cost may decrease with increase in slag volume. As the total charge volume increases it requires more power for smelting and results in increasing in cost of power. The material mix should be selected in such a manner so as to maintain slag volume at an optimum level where the total cost will be minimum and with optimal customer mix the contribution can be maximized.

Ragupathy R.,Center for Military Airworthiness and Certification | Mahendran S.,Vivekananda Institute of Technology
IET Conference Publications | Year: 2011

World is developing in terms of technology and population, which demands for increased power production. Now much of the energy supplies come from fossil fuels which are non-renewable energy resources. Researches indicate that fossil fuels will be exhausted in around 200 years [1] Moreover all non renewable energy resources leads to global warming, whose ill effects are well known. Hence the need for renewable energy resources have been well understood and being implemented. This paper discusses a deterministic-renewable source of energy on road transport using EAR (Energy Absorbers on Road). In addition to the hardware (EAR) which is already explored by researchers, this paper discusses the implementation possibilities and quantification has also been attempted on the same. A comparison has also been made with other renewable energy resources. This paper projects this as a practical deterministic source of renewable energy. This paper covers the working principle, implementation possibilities and the experimental output of the proposal.

Rohini T.,Vivekananda Institute of Technology
Communications in Computer and Information Science | Year: 2011

With today's increasing trend of cloud computing world, most of the organizations prefer to outsource and share their data by the means of cloud service providers. Cloud computing plays a major role by providing different resources in the form of web services which is based on pay-as-per-usage model. Along with benefits of reduced cost, dynamic resource availability, consumption based cost it also brings new challenges for data security and access control when users outsource sensitive data for sharing on cloud servers. This paper takes a glance on the different cloud computing model based on their access and deployment of clouds, also it provides two cryptographic approaches for the data security. The first approach is software based data security model and another is hardware based data security model. In software based model the cryptographic approach is used to build the software for the security of data. In hardware based model it is embedded in the hardware itself, thus providing more robustness. Thought hardware based model provides more robustness; the software based model provides more flexibility for the data correction and data recovery. © 2011 Springer-Verlag Berlin Heidelberg.

Trivedi A.,Vivekananda Institute of Technology | Rajawat S.,Vivekananda Institute of Technology
Lecture Notes in Electrical Engineering | Year: 2015

The use of accreditation and quality measurement and reporting to improve healthcare quality and patient safety has been widespread across many countries. A review of the literature reveals no association between the accreditation system and the quality measurement and reporting systems, even when hospital compliance with these systems is satisfactory. Improvement of healthcare outcomes needs to be based on an appreciation of the whole system that contributes to those outcomes. The research literature currently lacks an appropriate analysis and is fragmented among activities. This paper aims to propose an integrated research model of these two systems and to demonstrate the usefulness of the resulting model for strategic research planning. In this paper, we discuss how to improve the overall performance of quality in healthcare systems and, additionally, what methods a researcher needs to adopt for system effectiveness. © Springer India 2015.

Rao G.M.,Vivekananda Institute of Technology | Baig M.N.,Vivekananda Institute of Technology | Baba Md.F.,Vivekananda Institute of Technology | Kumar K.K.,Vivekananda Institute of Technology
ICECT 2011 - 2011 3rd International Conference on Electronics Computer Technology | Year: 2011

An important issue for mobile ad hoc network is the routing protocol design. Due to frequent changes in the topology of the network this becomes a major technical challenge. Node failures and link breakages in the network may cause loss of the network resources. Our proposed scheme enhances the QoS parameters like network stability, efficient packet delivery ratio and network lifetime which thereby improves the reliability of the network. This routing scheme is based on backbone nodes in the network and is incorporated in the AODV protocol. It combines stable routes, battery power and signal strength of the nodes to achieve the QoS parameters. © 2011 IEEE.

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