Informatics Publishing Limited

Ashish Verma ¹, Neelima Chakrabarty ², S. Velmurugan ², B. Prithvi Bhat ³, H. D. Dinesh Kumar ¹, B. Nishanthi ⁴

Affiliations
1 Department of Civil Engineering, Sustainable Transportation and Urban Planning, Indian Institute of Science, Bengaluru 560 012, IN
2 Traffic Engineering and Safety Division, Central Road Research Institute, Mathura Road, New Delhi 110 025, IN
3 Central Institute of Road Transport, Pune 411 026, IN
4 Department of Civil Engineering, National Institute of Technology, Tiruchirappalli 620 015, IN

Abstract

Among the human factors that influence safe driving, visual skills of the driver can be considered fundamental. This study mainly focuses on investigating the effect of visual functions of drivers in India on their road crash involvement. Experiments were conducted to assess vision functions of Indian licensed drivers belonging to various organizations, age groups and driving experience. The test results were further related to the crash involvement histories of drivers through statistical tools. A generalized linear model was developed to ascertain the influence of these traits on propensity of crash involvement. Among the sampled drivers, colour vision, vertical field of vision, depth perception, contrast sensitivity, acuity and phoria were found to influence their crash involvement rates. In India, there are no efficient standards and testing methods to assess the visual capabilities of drivers during their licensing process and this study highlights the need for the same.

Keywords

Crash Involvement, Driver Licensing, Generalized Linear Modelling, Visual Functions.

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S. Krishnamohan ¹, S. Ramanathan ², S. Velmurugan ¹

Affiliations
1 Department of Mechanical Engineering, E.G.S Pillay Engineering College, Nagapattinam, Tamilnadu, 611 002, IN
2 Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar, Tamilnadu, 608 002, IN

Abstract

Nanocomposites are composites that consist of nanosized particles embedded in some type of matrix are a group of promising new materials that will undoubtedly become infused with some of our modern technologies. Material property combinations and ranges have been, and are yet being, extended by the development of composite materials. Already Titanium is recognized for its strategic importance as a unique lightweight, high strength alloyed structurally efficient metal for critical, high-performance aircraft, such as jet engine and airframe components. Due to its high strength-to-weight ratio, Titanium is called as the "space age metal". Today, titanium alloys are common, readily available engineered metals that compete directly with stainless and Specialty steels, copper alloys, nickel based alloys and composites. In order to reduce residual stress developed during fabrication and to increase the strength a new composite material of Titanium (Ti-6Al-4V) Alloy with Nano SiC are needed. This composite also is an alpha beta alloy which is subjected to annealing and solution treatment to attain beta phase. This beta phase is maintained by quenching and subsequent aging to increase strength. Thermal cycling process was carried out for heat treated composite specimen. This paper reports on the investigation of tensile behaviour of different Heat treated and thermal cycled composite material of Titanium (Ti-6Al-4V) Alloy with Nano SiC and the micro structural changes. Also the tensile behaviour is compared with the ordinary Titanium Alloy.

Keywords

Stir Casting, Thermal Cycling, Heat Treatment, Solutionizing, Aging, Tensile Strength.

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S. Velmurugan ¹, E. Logashanmugam ²

Affiliations
1 Department of Electronics and Communication Engineering, St. Peter’s University, Chennai - 600054, Tamil Nadu, IN
2 Department of Electronics and Communication Engineering, Sathyabama University, Chennai - 600119, Tamil Nadu, IN

Abstract

Objective: The objective of this scheme is to improve the quality of service in WSNs. Method: In this paper, we propose Detecting and Replacing Beacon Node Failure (DRBF) and Secure Communication in WSNs. DRBF focus on Beacon Node Failure and reliable data transmission in WSNs. Findings: The beacon node fails due to resource, hardware failure or some other reasons whereas the Base Station (BS) replaces that beacon node by mobile user. This mobile user acts as the beacon nodes and updates the location information to the sensor nodes. The cryptography key technique provides secure data transmission to the network. Improvement: The DRBF reduces both the packet loss rate and delay, which are shown in the simulation results.

Keywords

Beacon Node, Clustering, Key Management, Localization, Mobile User, Security.

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S. Velmurugan ¹, N. Subramanian ²

Affiliations
1 Department of Mathematics, Hindustan Institute of Technology and Science, Chennai - 603 103, IN
2 Department of Mathematics, SASTRA University, Thanjavur-613 401, IN

Abstract

In this article, using the concept of natural density, we introduce the notion of Bernstein polynomials of rough λ−statistically and ρ−Cauchy triple sequence spaces. We define the set of Bernstein polynomials of rough statistical limit points of a triple sequence spaces and obtain to λ−statistical convergence criteria associated with this set. We examine the relation between the set of Bernstein polynomials of rough λ−statistically and ρ−Cauchy triple sequences.

 

 

Keywords

Bernstein Polynomial, Rough Statistical Convergence, Natural Density, Triple Sequences, rλ−Statistical Convergence, ρ−Cacuhy.

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A. Suresh ¹, B. Ganesh ², S. Velmurugan ²

Affiliations
1 Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai – 600 119, Tamil Nadu, IN
2 Department of Chemical Engineering, Adhiparasakthi Engineering College, Melmaruvathur – 603319, Tamil Nadu, IN

Abstract

The textile dying industry contains effluents which are harmful to human health and environment. In this research work, decolourisation of congo red dye was studied using natural coagulant like Moringa oleifera Seed Powder (MOSP) and Maize Seed Powder (MSP) which are suitable alternative for chemical coagulants in coagulation and flocculation process. Absorbance value was determined for various concentration of congo red dye by using a UV spectrophotometer and the calibration curve was drawn. Experiments were carried out for determining the percentage of decolorisation using MOSP and MSP. The different parameters such as pH, temperature, coagulant dose and flocculation time were optimized. The optimum decolorisation percentage of congo red was observed for natural coagulant MOSP with removal efficiency of 92% at coagulant dosage of 200 mg/l, temperature of 500⁰C, pH of 7.5 and flocculation time of 60 minutes. For natural coagulant MSP, Congo red decolorisation efficiency was found to be 65% at coagulant dosage of 50 mg/l, temperature 500⁰C, 5 pH and flocculation time of 90 minutes. Hence, it can be inferred that MOSP gives better decolorisation efficiency than MSP for Congo red removal.

Keywords

Congo Dye, Maize Seed Powder, Moringa oleifera Seed Powder, Natural Coagulants.

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