Techno India

About: Techno India is a based out in . It is known for research contribution in the topics: Computer science & Cloud computing. The organization has 4724 authors who have published 4005 publications receiving 34112 citations.

Collusion-Free Privacy Preserving Data Mining

Abstract: Distributed association rule mining is an integral part of data mining that extracts useful information hidden in distributed data sources. As local frequent itemsets are globalized from data sources, sensitive information about individual data sources needs high protection. Different privacy preserving data mining approaches for distributed environment have been proposed but in the existing approaches, collusion among the participating sites reveal sensitive information about the other sites. In this paper, the authors propose a collusion-free algorithm for mining global frequent itemsets in a distributed environment with minimal communication among sites. This algorithm uses the techniques of splitting and sanitizing the itemsets and communicates to random sites in two different phases, thus making it difficult for the colluders to retrieve sensitive information. Results show that the consequence of collusion is reduced to a greater extent without affecting mining performance and confirms optimal communication among sites.

Microstructure and Mechanical Properties of Friction Stir Welded SiC/TiB2 Reinforced Aluminum Hybrid Composites

Abstract: In the recent decades, the use of aluminum alloy has significantly enhanced especially in engineering applications extensively used in shipbuilding, aircraft, structural and automobile applications such as crankshaft, connecting rod and piston etc. This paper illustrates a comprehensive investigation on mechanical behavior of AA6061/Titanium diboride (TiB2)/Silicon carbide (SiC) composites joined by friction stir welding using cylindrical pin tool profile. Various sets of metal matrix composites were prepared by varying TiB2/SiC composition percentages in aluminum matrix using stir casting process. This process is followed by welding of samples by controlled input process parameters. Subsequently, microscopic analysis is performed on the various weld zones namely heat affected zone, thermo-mechanically affected zone and stir zone to observe the grain size and distribution of reinforcement ceramic particles in the matrix. Hardness and tensile tests are carried out to assess the strength of the weldment. Results emphasize that the ultimate tensile strength of the welded specimens is proportional to the weight percentage of TiB2 in the matrix. The maximum hardness observed is 135.56 HV which is marginally greater than the aluminum matrix. Percentage elongation also increased by 2.5% thereby improving the weld specimen’s ductile property.

Highly sensitive antimonene-coated black phosphorous-based surface plasmon-resonance biosensor for DNA hybridization: design and numerical analysis

Abstract: The design of an ultrasensitive surface plasmon resonance (SPR) sensor for the detection of deoxyribose nucleic acid (DNA) hybridization is highly desirable for biomedical applications. We have proposed an SPR sensor architecture (Prism-SF10/Al/Si/BP/Antimonene/phosphate buffer saline solution) and performed its numerical analysis for DNA hybridization using angular interrogation at 633 nm. Antimonene is used as a biorecognition element layer for better attachment of single stranded (ss), i.e., ss probe DNA on its surface, due to its higher binding energy for ssDNA (even greater than graphene). Silicon and black phosphorous are utilized to enhance the electromagnetic field at the sensing layer interface. Aluminum is used as an surface plasmon active metal and it also improves the quality factor. Remarkable sensitivity (202.37 deg / refractive index unit) is attained for this work, which is greater than any other SF10 prism-based SPR sensor proposed to date. The performance of the SPR biosensor is meticulously evaluated as limit-of-detection (0.0028 nM) and figure-of-merit (0.037 nM − 1) with respect to the concentration of complementary target ssDNA in the sensing medium. This versatile biosensor shows great application to detect deadly diseases via DNA hybridization in the biomedical field if developed as an SPR chip for experimental verification.