Informatics Publishing Limited

S. Beski Prabaharan ¹, S. Senthil Murugan ², K. Vivek ², M. Velmurugan ²

Affiliations
1 Information Technology Department, J J College of Engineering and Technology, Trichirappalli-9, Tamilnadu, IN
2 J J College of Engineering and Technology, Trichirappalli-9, Tamilnadu, IN

Abstract

In wireless network data transfer is a secure one, because the intruders may use duplicate IP addresses to hack the confidential data. Hop-by-hop authentication is necessary for secured communication. Hop-by-hop authentication is obtained by MAC address lookup table. The main goal of this work to protect contents of sensor data from attackers, including external intruders and unauthorized network users. For this purpose, we need to define and enforce a flexible access policy for each individual user based on the user’s role in the system. In particular, the access policy should be able to define a unique set of data that the user is authorized to access, and must be enforced via a cryptographic method since sensor nodes are vulnerable to strong attacks.

Keywords

IP Address, Lookup Table, Authentication, Cryptographic Method.

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M. Vaijayanthi ¹, K. Vivek ²

Affiliations
1 Electronics Department in Manakula Vinayagar Institute of Technology, Puducherry, IN
2 Manakula Vinayagar Institute of Technology, IN

Abstract

The ultra-low power and area efficient analog-to-digital converters (ADCs) makes use of low voltage CMOS dynamic comparators to maximize the power efficiency and speed. The conventional dynamic comparators have characteristics like high input impedance, no static power dissipation and good robustness against noise and mismatch. The drawback is that large numbers of transistors are used to reduce the offset, so the speed of the comparator is minimized. Double tail comparators overcome the drawbacks in conventional comparator by reducing the stacking of transistors with low supply voltage and delay. But there is a problem of low trans-conductance for this comparator. In modified double tail comparator, few transistors are added and the positive feedback in the regeneration stage is strengthened and the power consumption and delay time is reduced. In this paper delay analysis of dynamic double tail comparators are presented with respect to speed and supply voltage. Then based on the delay analysis results, the modified double tail dynamic comparator is modified in terms of architecture and transistor technology which results as body driven Double Tail Dynamic Comparator for fast operation even in ultra low supply voltages. Simulation results can be done by using 180nm CMOS technology reveals that the delay time is considerably reduced.

Keywords

Dynamic Comparators, Double Tail Comparators, Body Driven Double Tail Comparator, Regeneration, Delay Analysis.

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J. Ajayan ¹, S. Shriram ², D. Nirmal ³, K. Vivek ⁴

Affiliations
1 Electronics and Communication Engineering, Karunya University, IN
2 Electronics and Communication Engineering, MIT, Pondicherry, IN
3 Electronics and Communication Engineering Department, Karunya University, IN
4 Electronics and Communication Engineering, B. S. Abdur Rahman University, IN

Abstract

In this paper, a 128 bit high speed Manchester carry chain (MCC) adder is implemented using 22nm strained silicon technology with a supply voltage of 0.8V. The non-idealities such as variability and leakage current, may significantly degrade the performance of digital circuits as the technology approaches to nanometer regime. In this paper, the effect of temperature on the performance of the Manchester carry chain adder circuit is analyzed in detail and its performance is compared with the same circuit implemented using 90nm CMOS technology. The even and odd carries of the MCC adder are computed separately using two different carry chains. This will improves the operating speed of the adder. 8-Bit MCC adder modules are used for constructing 128 bit MCC adder.

Keywords

Carry Look-Ahead Adders, Domino Logic, High Performance, Leakage Currents, Manchester Carry Chain.

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K. Vivek ¹, G. Jagan ²

Affiliations
1 Sree Balaji Medical College & Hospital, Bharath Institute of Higher Education and Research, Chennai, IN
2 Department of General medicine,Sree Balaji Medical College & Hospital, Bharath Institute of Higher Education and Research, Chennai, IN

Abstract

The purpose of this study was to assess the safety and preliminary clinical results of platelet-rich plasma (PRP) injections for treating chronic plantar fasciitis. The present sample size of 40 patients were analysed prospectively by injecting platelet rich plasma in plantar fasciitis. The study was conducted in sreebalaji medical college and hospital from March 2017 to March 2018 with a follow up period of 3 months duration. The visual analogue scales (VAS) for pain were used to evaluate the clinical results. The mean difference between in VAS scoring system at the time of presentation was 8.4%, and there was gradual and significant improvement in VAS scoring system in plantar fasciitis. Which showed as 4.925% at 1^st month, 3.375% at 2^nd month, and 1.925% at 3^rd month respectively. In this single-centre, uncontrolled, prospective, preliminary study, results indicate that treating chronic plantar fasciitis with PRP injections is safe and has the potential to reduce pain.

Keywords

Platelet Rich Plasma, Plantar Fasciitis.

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