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An Enhanced Trust Management Framework for MANET using Fuzzy Prediction Mechanism
V. Hemamalini,G. Zayaraz,V. Vijayalakshmi 보안공학연구지원센터 2015 International Journal of Security and Its Applicat Vol.9 No.1
A Mobile Ad hoc Network (MANET) is a self-sufficient arrangement of portable switch and related hosts associated by remote connections. It is a gathering of autonomous versatile hubs that can speak with one another through radio waves. These systems are completely disseminated, and work at wherever without help of any framework. MANETS are substantially more helpless to assault than the wired system. Because of the rapidly changing system topology, versatile hubs frequently comes in and goes out of the system, along these lines permitting any vindictive hub to join the system without being located . Subsequently, Ad Hoc system needs extremely particular security systems. But there is no single approach fitting all the networks, as the nodes can be any devices. Therefore, in this paper, an Enhanced Trust management framework using Adaptive Fuzzy Logic mechanism is proposed to provide detection of malicious node. The proposed model will be incorporated over Ad hoc On-demand Distance Vector (AODV) routing protocol to pick the most limited course that meets the security prerequisites of information bundle transmission. Investigations have been led to assess the productivity and viability of the proposed component in malignant node identification attack resistance.
Fenugreek seed polyphenols inhibit RBC membrane Na<sup>+</sup>/K<sup>+</sup>-ATPase activity
Anuradha, Carani V.,Kaviarasan, Subramanian,Vijayalakshmi, Kodali Kyung Hee Oriental Medicine Research Center 2003 Oriental pharmacy and experimental medicine Vol.3 No.3
The hypoglycemic and hypolipidaemic effects of fenugreek seeds (Trigonella foenum graecum) are well established. Owing to the wide spread use of the seeds by healthy individuals and by diabetic patients we wanted to test whether the seeds can affect biological systems such as membrane transport function. In the present study fenugreek seed polyphenols were extracted and their effect on erythrocyte membrane-bound sodium-potassium adenosine triphosphatase $(Na^+/K^+-ATPase)$ activity was studied in vitro. Fenugreek seed polyphenols inhibited $Na^+/K^+-ATPase$ in erythrocyte membrane of diabetic and normal subjects. Maximum inhibition was observed at $100\;{\mu}l$ of extract containing 0.75 mM gallic acid equivalents. The uncoupling of membrane ATPases in vitro suggest that polyphenols from fenugreek seeds may possess a positive inotropic effect.
Analysis of Multimodal Biometric Fusion Based Authentication Techniques for Network Security
R.Divya,V.Vijayalakshmi 보안공학연구지원센터 2015 International Journal of Security and Its Applicat Vol.9 No.4
Multibiometrics is the usage of more than one physiological or behavioral characteristic to identify an individual. Multibiometrics is advantageous over unibiometrics as it is resilience to spoofing and has low False Acceptance Rate (FAR). However Multibiometrics requires storage of multiple biometric templates for each user, which results in increased risk to user privacy and system security. This paper will discuss the concept off biometrics and biometric system, multimodal biometric fusion techniques, crypto-biometrics and an algorithm for session key generation for secure communication of data.
Hybrid Key Management Scheme for Wireless Sensor Networks
R.Sharmila,V.Vijayalakshmi 보안공학연구지원센터 2015 International Journal of Security and Its Applicat Vol.9 No.11
Many key management schemes have been proposed in systematically deployed Wireless Sensor Networks (WSNs).The sensor nodes are equipped with inadequate battery power, low memory, limited computation and communication range. Energy efficient secure routing is major issue in wireless sensor networks. In this paper, the hybrid key management scheme is proposed by combining public key cryptography scheme with symmetric scheme. The symmetric keys are generated by using genetic algorithm. Initial input for the genetic algorithm is the seed key generated by Hyperelliptic Curve Cryptography (HECC).The proposed scheme addresses the energy efficiency, resilience against node capture attack, key refreshment between the cluster head and member nodes in the cluster. The simulation results show that the hybrid scheme is more robustness, efficient energy with reduced key size.
K. Naseema,Vijayalakshmi Rao,K.V. Sujith,Balakrishna Kalluraya 한국물리학회 2010 Current Applied Physics Vol.10 No.4
In this paper, we report the synthesis, growth and characterization of a new organic NLO single crystal of NMPMN (N0-[(Z)-(4-methylphenyl)methylidene]-4-nitrobenzohydrazide), for the first time. The single crystal was grown by slow evaporation method at room temperature. The cell dimensions obtained by single crystal XRD studies reveal that the crystal belongs to triclinic system. It was characterized by different techniques like powder XRD, UV, FTIR, TGA and DSC. The Knoop microhardness test was carried out to measure the mechanical strength of the crystal. Its refractive index was determined by the Brewster’s angle method. The laser damage threshold studies have been carried out for the crystal using a Q-switched Nd:YAG laser of ns pulses at a wavelength of 532 nm. The Kurtz Powder Second Harmonic Generation revealed that the SHG efficiency of the grown crystal is about 50% that of KDP and is found to be phase matchable. The intermolecular O-H···O, O-H···N and C-H···O hydrogen bonds and a π–π stacking interaction between the nitrobenzene and tolyl rings helps to create a delicate balance between the molecular and supramolecular charge transfer processes by creating a noncentrosymmetric structure.