Informatics Publishing Limited

D. Karthikeyan ¹, P. Arunkumar ², P. Vidyasri ³

Affiliations
1 Department of MCA, Bharathiyar College of Engineering and Technology, Karaikal-609 609, IN
2 Department of MCA, EGS Pillay Engineering College, Nagapattinam, Tamilnadu, IN
3 Mailam Engineering College, Mailam, Tamil Nadu, IN

Abstract

This paper presents an agent-based and context-oriented approach that supports the composition of Web services. A Web service is an accessible application that other applications and humans can discover and invoke to satisfy multiple needs. To reduce the complexity featuring the composition of Web services, two concepts are put forward, namely, software agent and context. A software agent is an autonomous entity that acts on behalf of users and the context is any relevant information that characterizes a situation. During the composition process, software agents engage in conversations with their peers to agree on the Web services that participate in this process. Conversations between agents take into account the execution context of the Web services. The security of the computing resources on which the Web services are executed constitutes another core component of the agent-based and context-oriented approach presented in this paper.

Keywords

Web Service, Composition, Software Agent, Context, Conversation, Security.

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T. Suresh Padmanabhan ¹, D. Karthikeyan ², P. Arunkumar ³, S. Visalatchy ³

Affiliations
1 Pondicherry University, Pudhucherry, IN
2 Department of MCA, Bharathiyar College of Engineering and Technology,Karaikal 609609,U.T of Pudhucherry, IN
3 Department of MCA, EGS Pillay Engineering College, Nagapattinam, Tamilnadu, IN

Abstract

This paper facilitates the techniques to be used with the images that cannot be misused by unauthorized users. This method is to provide the security for images by using key concepts. The Invisible Watermarking concept is used for secret message and images to send one node to another node with a private key. A package is developed to attain the above said technology. This package is mainly applicable for a software company which focuses on how to secure the data from the hackers while transferring the information. It gives controlled redundancy, data independence, more accuracy and integrity, privacy and security and also a good performance.

Keywords

Invisible Watermarking, Stegnography, Encryption.

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D. Karthikeyan ¹, P. Arunkumar ²

Affiliations
1 Bharathiyar College of Engineering and Technology, Karaikal, IN
2 MCA Department, E.G. S Pillay Engineering College, Nagapattinam, IN

Abstract

Computing methodology is one of the emerging technologies for the people to reach their global environment. The method of voting through mobile by the people, to determine their own government from any where in the world, is needed. This paper explains on “Voting through Mobile, with Combined Finger Print Authentication, integrated with Inter Could Computing and Automated Load Balancing, fused with Data Hiding Security”. To make it possible, vote can be made through mobile by using wireless network with combined finger print biometric identification systems. We advocate Spatial Cloud Computing to focuses on adding geography to the cloud computing paradigm. Spatial cloud computing provides dynamically scalable geographic information technology, spatial data, and geo-applications as a web service / utility. A data hiding method, which is applicable to fingerprint images compressed with wavelet-based scheme and provide full security for biometric data that is passed through the network from different places. This combined method creates a new evaluation of process with 100% security, 100% privacy & 100% voting by any kind of people from anywhere.

Keywords

Biometric Authentication, Bayesian, Finger Print Template, Spatial Cloud, Voting.

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R. Palanisamy ¹, K. Vijayakumar ¹, K. Selvakumar ¹, D. Karthikeyan ¹, G. Santhoshkumar ¹

Affiliations
1 Department of EEE, SRM University, Chennai – 603203, Tamil Nadu, IN

Abstract

Objectives: This paper illuminatessimulation and modelling of 5-level single phase Z-source based cascaded scheme inverter and its progress for output voltage twice the applied input voltage. Methods/Analysis: Z-source network utilizes a unique impedence network (L-C) combinations to connect with 5-level cascaded inverter, which gives unique features that cannot be obtained from the conventional inverter citcuits. Z-source network trounce the various restrictions of conventional voltage source inverter and current source inverters like reduced losses, voltage stress, improved output voltage. By using the shoot-through conditions the duty ratio of the proposed system can be speckled to achieve better output source voltage compare to conventional methods. This method is imitation using matlab - simulink with experimental results are verified using dsPIC controller. Findings: Z-source cascaded type H-bridge inverter facilitates to boost functional source voltage without any conservative dc - dc boost converters. The output source voltage of the planned system increased twice that of conventional inverter system and better current control is achieved.SPWM technique used to contorl the power switches placed in the proposed system. Novelty/ Improvement: The total harmonic level in the proposed system diminished and voltage stress in the each power switches also reduced. The method keeps away from the convention of dc/dc converter, diminishes the expenditure of the scheme and reduces voltage stress in the switches.

Keywords

Cascaded Type H-Bridge Inverter (CHBI), Matlab/simulink, Sinusoidal based Pulse Width Modulation (SPWM), Z-source Network.

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R. Palanisamy ¹, K. Vijayakumar ¹, K. Selvakumar ¹, D. Karthikeyan ¹, G. Santhoshkumar ¹

Affiliations
1 Department of EEE, SRM University, Chennai - 603203, Tamil Nadu, IN

Abstract

Objectives: The implementation of five phase three level Neutral Point Clamped (NPC) inverter is illustrated using space vector modulation technique based on the optimized five vectors switching strategy. Methods/Analysis: In 5 phases 3 levels NPC inverter consists of 243 switching state vectors, which can be reduced to 113 states by optimized Space Vector Modulation (SVM) switching strategy. The system has 11 sectors, which is converted into 6 sectors in that sub regions can be identified by optimised technique in d-q voltage vector. Simulation results of the five phase three level neutral point clamped inverter using SVM verified using Matlab/Simulink. Findings: SVM utilities switching states among the available various redundant states to reduce the common mode voltage and capacitor balancing problem. Dwell time calculations for this proposed does not need of any lockup table and park transformation. It’s applicable for high power medium voltage, remote sensing and industrial applications. Novelty/Improvement: The 3level 5phase NPC inverter has improved power density of the machine, enhanced dissection of power source among the inverter legs, abridged amplitude and augmented frequency of the torque pulsation than the traditional inverters.

Keywords

Neutral Point Clamped Inverter (NPCI), Optimised Space Vector Modulation (OSVM), Pulse Width Modulation Method (PWM), Switching States.

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Manimaran ¹, D. Karthikeyan ¹, P. T. Ravichandran ¹, Joga Jaya Prakash Reddy ¹

Affiliations
1 Department of Civil Engineering, SRM University, Kattankulathur - 603203, Tamil Nadu, IN

Abstract

Background/Objectives: Soil stabilization is one of the methods used when the given site conditions does not have desirable strength characteristics to support structures, railways and roads. It is the process for improving the soil properties by methods of mechanical or chemical, to produce an soil material which has all the required engineering properties. Application of solid waste disposal (Industrial or Agro waste) for soil stabilization is a significant which serves various benefits to the environment. Methods/Statistical Analysis: In this study the properties of weak soil is improved with the addition of Rice Husk Ash (RHA) of varying percentages of 3, 6, 9 and 12%. The sample was compacted at maximum dry density with the addition of OMC. A series of laboratory experiment has been conducted on expansive soil blended with Rice Husk Ash in 3%, 6%, 9%, 12% and 15% by weight of dry soil. Findings: Unconfined compressive and CBR values of soil increased with the addition of rice husk ash. From the UCC test result, showing that the percentage increase in UCS is 242% and the decrease in swell value from 75 to 45 for the addition of 12% RHA. The study giving the most relevant results by addition of Rice Husk Ash (RHA) upto12% in soil sample. Variations in mineralogical composition analysed by SEM and XRD studies clearly indicate the variation in soil structure formation, due to the chemical reactions initiated by the agro waste mixed in soil. Application/ Improvement: The Rice Husk Ash has a potential to improve the strength characteristics of expansive soil and it reduces the swelling potential of soil. Use of RHA in soil stabilisation is economic; eco friendly and it also solve the disposal problem.

Keywords

Agro Waste, Free Swell, Rice Husk Ash , UCS

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Arindam Barua ¹, M. P. Premchand ¹, R. Vishnu ¹, Prabhat Kumar Dubey ¹, Jayachitra ¹, Ambili K. Gopinath ¹, S. Anitha ¹, Renjith Keezhoth ¹, Anil P. Madeckal ¹, D. Karthikeyan ¹, Sheethal Antony ¹, J. Suresh Babu ¹, R. Manohara Rao ¹, I. Sudar ¹, E. S. Padmakumar ¹

Affiliations
1 Vikram Sarabhai Space Centre, Indian Space Research Organization, Thiruvananthapuram 695 022, IN

Abstract

The navigation, guidance and control (NGC) system of Reusable Launch Vehicle – Technology Demonstrator (RLV-TD) is the most complex system ever flown in ISRO’s launches. It includes a navigation system employing traditional inertial navigation system along with global positioning system aiding and radar altimeter, ceramic servo accelerometer package, angle of attack-based control, different control systems, including secondary injection thrust vector control, reaction control system and aero control surfaces. Closed loop simulations of integrated NGC system of RLV-TD are of utmost importance to ensure mission success by assessment of system performance in nominal and off-nominal flight conditions. Validation is achieved through progressive evaluations in different levels of integrated simulation, namely autonomous simulations, software in loop simulation, on-board processor in loop simulation, hardware in loop simulation and actuator in loop simulation using Iron Bird test facility. This article discusses the overall NGC system, challenges faced during the realization of the simulation test bed, including system design to validate the new on-board elements, commissioning of Iron Bird facility and validation through various phases of simulation. The outcome of these simulations played a crucial role in bringing about improvements and helping in the evolution of the on-board system to the final configuration, ensuring the success of the mission.

Keywords

Control, Guidance, Integrated Simulation, Navigation, Reusable Launch Vehicles, Validation.

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M. Kishanth ¹, P. Rajkamal ², D. Karthikeyan ², K. Anand ²

Affiliations
1 Dept. of Mech. Engg., Parisutham Institute of Tech. and Sci., Thanjavur, IN
2 Dept. of Production Engg., PSG College of Tech., Coimbatore, Tamil Nadu, IN

Abstract

In this paper CNC end milling process have been optimized in cutting force and surface roughness based on the three process parameters (i.e.) speed, feed rate and depth of cut. Since the end milling process is used for abrading the wear caused is very high, in order to reduce the wear caused by high cutting force and to decrease the surface roughness, the optimization is much needed for this process. Especially for materials like aluminium 7010, this kind of study is important for further improvement in machining process and also it will improve the stability of the machine.

Keywords

End Milling Process, Cutting Force, Surface Roughness, RSM.

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