NSGA-II Implementation for Resource Allocation in MIMO-OFDMA

One of the most challenging issues for future wireless communication systems is the provision of quality-of-service (QoS) guarantees to users over the harsh wireless channels given the limited resource availability. The aim of this paper is to probe the problem of dynamic subcarrier and bit allocation in downlink of MIMO-OFDMA systems.

Using Singular Value Decomposition, MIMO fading channel of each subcarrier is transformed into an equivalent bank of parallel SISO sub-channels. NSGA-II is handled which is a multi-objective Genetic Algorithm, for joint allocation of bits and subcarriers, in the downlink of MIMO-OFDMA system. NSGA-II is intended for optimization problems involving multiple conflicting objectives. Here the two conflicting objectives are Rate Maximization and Transmit Power Minimization.

By P. Kanthimathi "NSGA-II Implementation for Resource Allocation in MIMO-OFDMA"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-5 , August 2018,

URL: http://www.ijtsrd.com/papers/ijtsrd15879.pdf

Direct URL: http://www.ijtsrd.com/engineering/electronics-and-communication-engineering/15879/nsga-ii-implementation-for-resource-allocation-in-mimo-ofdma/p-kanthimathi

best journal, manuscript submission, call for paper engineering

Digital Data Security by using Quantum Cryptography

Security is the most common aspect of today' world, when all things are going to digitize then make them secure over the communication channel has become the prime aim of the digital service providers. Although many encryption and decryption techniques are available in the field of the cryptography, but they all are based on mathematical calculation which are difficult to solve but not impossible. The all existing techniques can be break by using quantum computer and some extra efforts. 

But Quantum Cryptography that is free from the mathematical calculations and large prime number factorization is solution of this type of problems. Quantum Cryptography based on the laws of physics and quantum mechanics which gives the most secure way of encryption and decryption. In this paper Key Generation and Exchanging of Key is implemented by using Visual Basic software to secure the digital data over the communication channel. 

Quantum cryptography will use Photons to transmit the information over the channel which are polarized at different orientation which are 00,450,900 and 1350 from sender at some basis and these polarized information is received by second party at other end and receiver will match the received photon with his photon on his basis and matched photons will form the Key, and if anyone try to hack that information both parties will come to know about the hacking. 

By Mohd. Amjad | Raju "Digital Data Security by using Quantum Cryptography" 

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-5 , August 2018,

URL: http://www.ijtsrd.com/papers/ijtsrd15900.pdf 

Direct URL: http://www.ijtsrd.com/engineering/computer-engineering/15900/digital-data-security-by-using-quantum-cryptography/mohd-amjad

manuscript publication, submit paper online, indexed journal

A Study on Properties of Modified Rotor Spun Yarn

Fibers due to their large length-diameter ratio are the most effective materials in supporting tensile loads still. Many textile applications do introduce fiber compressions either in a simple form or under complex loading conditions. The majority of these compressive loadings are directed laterally across the fiber axis like compression of fibrous assembly during draftee. Compression occurring to fabric during calendaring and embossing treatments etc. 

A special pre-compression apparatus was fabricated and mounted before the entry of fibrous strand into opening roller of rotor spinning frame. Cotton Slivers were pre-compressed in this zone at varying loads and the effect of this pre-compression on the resultant yam has been studied. The yam properties considered for the study are the studies are U%, tenacity, elongation, hairiness and imperfections. 

The drawback with rotor spun yams is lower tenacity and elongation which always need an improvement. Modified rotor spun yams obtained as a result of pre-compression of slivers shows lesser U %, reduced thin, dick and naps, lower hairiness values and mainly improved tenacity, elongation and work of rupture which would be a vital point for the industry. 

By K. Gopalakrishnan"A Study on Properties of Modified Rotor Spun Yarn"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-5 , August 2018,

URL: http://www.ijtsrd.com/papers/ijtsrd15913.pdf

Direct URL: http://www.ijtsrd.com/engineering/textile-engineering/15913/a-study-on-properties-of-modified-rotor-spun-yarn/k-gopalakrishnan

open access journal of engineering, ugc approved journals for engineering, special issue publication

Design Analysis & Fabrication of Test Rig for Piston Pin Fatigue Life Assessment

Every component has certain lifetime in order to increase their lifetime different manufacturing methods are to be used. The studies indicate that the greatest stress appears on the upper end of the piston pin and this stress concentration is one of the mainly reason for fatigue failure of piston pin. In order to increase the fatigue life, automobile industries tries to fabricate the piston pin in various methods. Since the pin is subject to fluctuating kind of load during its service condition, the estimation of the life of the piston pin is very much essential.

 Also this exercise help us to identify which method of production has yield more life. Our main objective is to design and fabricate a test rig for fatigue test of piston pin. The fixtures for simulating actual service condition is modeled and analyzed using CATIA and ANSYS software' and based on the results the dimensions for each component are evolved. Also proved that the fixture developed in this works satisfactorily and the given piston pin serves for more than 300000 cycles for the given loads.

By R. Sampathkumar | P. Srirajarajan"Design Analysis & Fabrication of Test Rig for Piston Pin Fatigue Life Assessment" 

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-5 , August 2018, 

URL: http://www.ijtsrd.com/papers/ijtsrd15896.pdf 

Direct URL: http://www.ijtsrd.com/engineering/mechanical-engineering/15896/design-analysis-and-fabrication-of-test-rig-for-piston-pin-fatigue-life-assessment/r-sampathkumar

international journals in engineering, paper publication for engineering, conference issue publication

A Study on Mechanical Properties of E-Glass Polypropylene Epoxy and S-Glass Polypropylene Epoxy Composites

There are basic two phase of composite material, in which one is known as matrix material and another one is called reinforcing material. The reinforcing material is embedded over matrix material. The matrix material is continuous phase and reinforcing is discontinuous phase. The reinforcing phase is much harder than matrix phase. In composite material matrix phase removes the stresses between reinforcing phase and also protect from mechanical and environmental damage. The function of reinforcing material is to improve mechanical and thermal properties of composites. 

Composite are hybrid of two or more material such as reinforced polymer, metal or ceramics. The aim of the present work is to fabricate E-glass epoxy composite and S-glass epoxy composite with polypropylene as filler material. The fabricated laminates are then tested for mechanical properties with varying percentage of filler material. The results obtained for E-glass epoxy composite and S-glass epoxy composites are then compared. The composites with optimum results are recommended. 

By Karthik A. S | Dr. S. V. Gorabal "A Study on Mechanical Properties of E-Glass Polypropylene Epoxy and S-Glass Polypropylene Epoxy Composites"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-5 , August 2018,

URL: http://www.ijtsrd.com/papers/ijtsrd15903.pdf

Direct URL: http://www.ijtsrd.com/engineering/mechanical-engineering/15903/a-study-on-mechanical-properties-of-e-glass-polypropylene-epoxy-and-s-glass-polypropylene-epoxy-composites/karthik-a-s

review papers, ugc approved journals for engineering, special issue publication

Design of High Strength Concrete Using Superplastisizer and Stone Dust

Concrete is the most widely used construction material today. Increase in construction activities have led to an increase in demand for the various raw materials in concrete, especially river sand which is the conventionally used fine aggregate. Due to increase in mining process, the availability of this river sand is becoming scarce. This led to researches on alternate materials as ingredients of concrete that are in no way inferior to the conventional materials. Manufactured sand was one of the alternate materials proposed. 

Though manufactured sand has many advantages, one of the major areas of concern is the fine material of size 150 micron and down removed during the manufacturing process and accumulated as a waste material. The paper presents the laboratory investigations and a comparative study on the mechanical properties and behaviour of high strength concrete an mortar using fine stone dust, the residue produced during the production of manufactured sand. 

By Rayees Ahmad Bhat | Mr. Misba Danish"Design of High Strength Concrete Using Superplastisizer and Stone Dust"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-5 , August 2018,

URL: http://www.ijtsrd.com/papers/ijtsrd15867.pdf

Direct URL: http://www.ijtsrd.com/engineering/civil-engineering/15867/design-of-high-strength-concrete-using-superplastisizer-and-stone-dust/rayees-ahmad-bhat

research papers, paper publication for engineering, conference issue publication

Different Module Integrated Converters for PV Systems A Review

In this paper literature review of PV module integrated converters has been conducted. Many times it is necessary to boost the PV voltage, further the size of power processing circuitry should be as small as possible. Considering this many researchers have worked on development of module integrated converters, in which converters are fitted in PV module. The PV output is boosted to desire level by using suitable MPPT techniques. Converters with high efficiency, higher voltage gain, and cascaded topologies can be designed for this purpose. 

By Ms. Diksha A. Kamble | Dr. S. B. Chavan"Different Module Integrated Converters for PV Systems A Review" 

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-5 , August 2018, 

URL: http://www.ijtsrd.com/papers/ijtsrd15784.pdf 

Direct URL: http://www.ijtsrd.com/engineering/electronics-and-communication-engineering/15784/different-module-integrated-converters-for-pv-systems-a-review/ms-diksha-a-kamble

high impact factor, ugc approved journals for engineering, special issue publication