Vignan University

About: Vignan University is a education organization based out in Guntur, Andhra Pradesh, India. It is known for research contribution in the topics: Computer science & Control theory. The organization has 1138 authors who have published 1381 publications receiving 7798 citations.

An Efficient Methodology for Avoiding Threats in Smart Homes with Low Power Consumption in IoT Environment Using Blockchain Technology

Abstract: The Internet of Things (IoT), a modern age of digital wireless sensor network tools, provides a broad variety of applications in different fields, including security, medical, home control, remote surveillance, etc. Owing to their extensive use and recent large-scale DDoS (distributed denial-of-service) attacks utilizing millions of such devices, the protection of these devices has become an essential thing to tackle. Blockchain technology is combined with IoT gadgets to provide improved protection. As data is exchanged between IoT gadgets, the proposed model is built to create a block after each interaction that is used for deeper analysis and is often used to identify attacks in IoT gadgets. Smart home corresponds to a regular home, with the exception that it includes integrated devices and equipment that provide additional support, power, and comfort for occupants. People are therefore given the opportunity to regulate their own energy efficiency, to have additional safety checks on their homes and many other advantages. Any malicious action that has taken place in the network can be easily tracked with the help of blocks generated using blockchain technology. The concept is evolving, especially in the last few years with the overall technological development. Together with the large benefits of smart homes, there are certain risks that come along and are difficult to predict as the concept is new and evolving. As a consequence, historical data is not adequate or does not exist. The aim of this proposed work is to analyze existing risk assessment methods that can be used to evaluate the cyber risks associated with smart homes and to further analyze them from three perspectives: person, society, and government. The new model is very good for connected home implementations because the degree of protection is increased relative to standard versions.

Soil Stabilization with Nanomaterials and Extraction of Nanosilica: A Review

Abstract: The ability varied in the volume changes under moisture content in soft clays The soil transformed into weak in the supporting of the structure leads to fail in various construction and geotechnical engineering failures These type soils under these situations needed to stabilize with additives before making a substantial basement, embankment, and excellent foundations for any structures This chapter approaches with analysis or review of some earlier works of literature done to develop the geotechnical properties of very soft clay by using nanomaterials such as terrasil and nanosilica The properties of nanomaterials are excellent bonding with soils The preparation and availability of nanomaterials are also needed to stabilize weak soils The preparation of nanosilica from agricultural wastes using acid mixtures is mainly concentrated, and the microanalysis for stabilization with nanomaterials, and preparation of nanosilica by XRD, EDS, and FT-IR is done

An elliptical model for lockstitch 301 seam to estimate thread consumption

Abstract: A geometrical model for lockstitch seam 301 has been proposed based on elliptical profile to estimate the thread consumption. The realistic elliptical shape of a lockstitch 301 seam has been confir...

CCII+ based dual square-and-triangular waveform generator

Abstract: This paper presents a novel topology of CCII+ based dual square-and-triangular waveform generator using 3-current conveyors and 5-passive elements, including 2-grounded resistors. The dual square waveform can be used in testing PLL as also in other applications in instrumentation. Simulation using CCII+ and discrete passive components show excellent linearity and tunability both by the resistor and capacitor over the bandwidth of interest (from 5 Hz to 200 kHz). Component sensitivity and temperature sensitivity (over −150° C to +150° C) is next studied. Finally an experimental verification of the proposed design has been tried by realizing the circuit with commercially available CFOA (AD 844 AN) which is next best after ASIC-fabrication. The experimental results are in agreement with the analyses. The topology presents a versatile building block for applications in design of sweep generators for instrumentation, mathematical function generators, and in testing units for ADCs. The design is suitable for ASIC implementation.

Flexural Behavior Performance of Reinforced Concrete Slabs Mixed with Nano- and Microsilica

Abstract: Present technology has been evaluated greatly over the past decades, where new particles are being designed and fabricated to fulfill specific needs. The field of nano- and micromaterials has prospered in many disciplines. It has been recently used in reinforced concrete in the production of high-strength, high-performance concrete. Microsilica (MS) and nanosilica (NS) particles have proven to be highly profitable to the concrete mix. Concrete has become denser with considerable improvement in their mechanical characteristics, particularly compressive strength. This proposed method includes a comparative study of the flexural bending behavior of conventional reinforced concrete (without MS or NS) slabs with other slabs. Each has various mixes of MS and NS particles incorporated into the concrete mix. The material content utilized in the slabs is kept constant by replacing a portion of the cement with an equivalent amount of either NS or MS particles or both. MS particles are altered from 0, 5, and 10% while NS particles are altered from 0, 0.5, and 1.0%. It cracks the widths and has higher final load-bearing capacity.