Volume 1, Issue 1, October 2013 (Title of Paper )

Page No.

Repair of Honey-Combed RC Beams Using Cementitious Materials

Authors: Samir Shihada, Yasser Oida

Abstarct- This study investigates the use of four cementitious repair materials in terms of restoring the flexural capacities of honey-combed reinforced concrete shallow beams. Fifteen reinforced concrete beams are cast with honeycombs on the tension side, repaired and then tested under four point-loading. The repair materials used include Ultra High Performance Concrete (UHPC), Ultra High Performance Fiber Reinforced Concrete (UHPFRC), Normal Strength Concrete (NSC) and Cement-based Repair Material (CRM). Added to this, three beams with no deteriorations are cast, tested and considered as control beams. The outcome of this study shows that the four repair materials can achieve flexural capacities ranging from 100 % to 130 % of the control beam capacities. In addition, mid-span deflections and crack patterns are also compared.

Keywords- Flexural capacity, honey-combed, shallow beams, stiffness, UHPFRC.


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Image Security through DWT & SVD based Watermarking and masking with Encryption

Authors: Tapas Bandyopadhyay, B Bandyopadhyay, B N Chatterji

Abstract- The rapid growth in the digital technology, image processing tools and communication revolution through Internet has made the reproduction of digitally created artifacts simple and within reach very easily. This new trend has several advantages in terms of flexibility, cost effectiveness, convenience etc., but at the same time, also raised some serious concerns in actual real life situation. Information security is an evolving phenomenon and no single technique seems sufficient enough to provide security of the images in the internet environment [1][12]. Encryption and digital watermarking techniques may be incorporated together in digital right management to achieve better security [2][3]. These two technologies are complimenting each other, and the increased security of the digital artifacts can be achieved by using benefits of the both. Encryption transforms the original digital contain into human unreadable format and watermarking leaves the digital object intact and recognizable with a permanent embedded tag of user specific information or logo embedded into it[7]. To hide the secret user specific information in the form of watermark it is encrypted using secret key based congruently generated pseudorandom number and then bitxoring to generate the encrypted watermark. The encrypted watermark is embedded in the host image using DWT and SVD based techniques and the watermarked image is further encrypted using key hashed based encryption techniques. This will prevent man in the middle attack by intercepting the watermarked image by the malicious attacker who may try to remove or distort the watermark and use it for malicious purpose. This technique makes the image human unreadable format and reduced in size while distribution and the user specific information is encrypted and permanently tagged with the host image through watermarking for authentication purpose[11]. The experimental results demonstrate the high robustness of the proposed algorithm to various image processing attacks like noise additions, rotations, cropping, filtering, compression etc.

Keywords- watermarking, encryption, entropy, pseudorandom number, PSNR, normalized cross correlation (NCC), Normalized Hamming Distance (NHD))


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[6] Tapas Bandyopadhyay, Robust and secure watermarking for protecting rightful ownership, Recent Trends in Computer Technologies (RTCT) Seminar organized by B P Podder Institute of Technology and Management and CSI,28 March 2009.

[7] Chang, C. C. and Y. S. Hu, Digital watermarking scheme based on singular value decomposition, Proc. of the International Symposium on Combinatorics, Algorithms, Probabilistic and Experimental Methodologies, Hangzhou, China, to appear, 2007.

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[10] Tapas Bandyopadhyay, B. Bandyopadhyay, B N Chatterji ” Attacks on Digital Watermarked Images in the Internet Environment and Their Counter Measures” International Journal of Advanced research in computer science, ISSN No. 09765697, Volume 4, No. 4, MarchApril 2013, page 155-159.

[11] Tapas Bandyopadhyay, B. Bandyopadhyay, B N Chatterji” Image Security through Combined Watermarking and Encryption Techniques” International Journal of electronics and Communication (IJEC), volume 1, issue 2 July 2013 Page 1-7.


Audit Trail Based on Process Mining and Log

Authors: Kundan Kumar Mishra, Rahul Kaul

Abstract- An audit trail is an evidence of all procedures that take place in a system and across a network; it provides an outline of user/system events so that safety measures events can be associated to the actions of a specie individual or system element. Audit trails can be inspected for the existence or nonexistence of confident patterns. Audit trails can be used for measuring security issues, access patterns and also used for managing the performance of any employee in software industries. In this research paper, we will propose a process mining based technique to evaluate audit trails for security measures. This paper is inspiration of the work based on alpha algorithm to support security efforts at various levels ranging from low-level intrusion detection to high-level fraud prevention.

Keywords- Audit Trails, Process mining, Pattern Discovery, Log, Data Mining


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[5] Process Mining and Security: DetectingAnomalous Process Executions and CheckingProcess Conformance,The final version will be published inElectronic Notes in Theoretical Computer ScienceURL:www.elsevier.nl/locate/entcs

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Optimization of Process Parameters in Drilling of GFRP Composites Drilled by an End Mill

Abstract- Due to the superior physical and mechanical properties Glass fiber-reinforced (GFRP) composite materials are very attractive for applications like aerospace and air craft structural components. This results a large number of research papers on machining of these composite laminates. Out of all the machining operations, most commonly used operation is drilling. However, drilling operation is hard to carry out due to drilling–induced delamination. To increase drilling efficiency of GFRP composite laminates with the least waste and damages, it is essential to understand the drilling behavior by conducting a large number of drilling experiments and drilling parameters such as feed rate and spindle speed should be optimized. This paper presents delamination study of composite materials by conducting drilling experiments using Taguchi’s L25 , 5-level orthogonal array and Analysis of variance (ANOVA) was used to analyze the data obtained from the experiments and finally determine the optimal drilling parameters in drilling GFRP composite materials. Experiments were also conducted to determine whether varying feed & spindle speed during drilling could reduce the delamination.

Keywords— Drilling induced Delamination, GFRP composite, L25 orthogonal array, Taguchi approach, End mill.


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Optimization of Direct Tunneling Gate Leakage Current in Ultrathin Gate Oxide FET with High-K Dielectrics

Authors: Sweta Chander, Pragati Singh, S Baishya

Abstract- This paper presents the impact of parameter optimization of n-type MOSFET for direct tunneling gate current using ultrathin Si3N4 and HfO2 with EOT (Equivalent Oxide Thickness) of 1.0 nm. This work is compared with TCAD santaurus simulation results to verify that accuracy of the model and excellent reduction in gate leakage with the introduction of the high-k gate dielectrics (HfO2 & Si3N4) in place of SiO2. It also observed that highk based MOSFET exhibits improved performance of Subthreshold Swing, Ion, Ioff Ion/Ioff ratio and transconductance.

Keywords- MOSFET, TCAD


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Impact of Body Coefficient and Threshold Voltage on CNTFET with Varying Oxide Thickness

Authors: Sanjeet Kumar Sinha, Saurabh Chaudhury

Abstract- In this paper we analyze threshold voltage and body coefficient (ϒ) on varying the oxide thickness in CNTFET. Simulation analysis of drain current and drain voltage characteristic is discussed and found that due to decreasing nature of quantum capacitance in CNTFET, the factor (ϒ) has still impact on device and it is not negligible in deep nano regime. We also observed from simulation on nanohub, that the above mention characteristic is increasing while reducing the threshold voltage along with oxide thickness.

Keywords- CNTFET, MOSFET, Quantum Capacitance, Threshold Voltage, Body Coefficient.


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