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A Comprehensive Study on Security in Wireless Sensor Networks(WSNs)
Full text linkWireless Sensor Networks(WSNs) are an important component of today\u27s ubiquitous and pervasive computing. Without WSNs, the applications aren\u27t as clever as they could be. Almost every scenario involving WSNs necessitates a quick and precise localization process. Existing frameworks and algorithms, on the other hand suffer from a significant disadvantage when it comes to beacon node trust, which is a critical component in Wireless Sensor Network. For localization this has to be ensured.. This issue is addressed in our current solution. In the harsh environment of WSN operations, malicious nodes are inescapable. As a consequence, A technique has been proposed to find out the problem while simultaneously offering a safe trust based localization system. It focuses on the algorithm for assessing trust and the creation of blockchains. Every beacon node’s truth value(trust value) are determined using various trust criteria with the corresponding weights being dynamically changed during localization process. After that the most reliable beacon nodes are chosen for mining. This two-step process ensures that the blockchain is kept up to current, and that beacon nodes have consistent Tvalues(Trust values). We conducted a series of simulations to test the suggested algorithm’s performance and effectiveness. The accuracy of localization, harmful activity detection, the confusion matrixes are used to compare results
Manufacturing Process and Emerging Advantage of Graphene Based Composites in Aerospace- A Review
Full text linkThe cardinal pillar for this paper is to showcase the composition of Graphene-based composites and reveal the hidden uses of Graphene-based composites in aerospace dominion. This paper briefly discusses the different methods by which graphene-based composites can be synthesized mostly those with functional polymers and inorganic nanostructures and additionally covers a few of the applications of graphene-based composites such as lightweight, fire retardancy, and additive manufacturing. Moreover, this detailed paper also brings up crucial highlights where graphene-based composites have covered long distances from the research lab to commercialization, specifically focusing on aerospace industries
A Critical Study on Missile and Missile Guidance
Full text linkAs a result of advancements in armament technology, traditional conceptions of battle are going through a profound transformation. The use of technology as a force multiplier is extremely prevalent in modern combat. In the modern battlefield, autonomous weapons are absolutely necessary. In this day and age, the presence of missiles is almost always indicative of a country\u27s level of military power. The employment of guided weapons is an unavoidable need in the arsenals of modern militaries. The study will primarily concentrate on several types of weapons, ranging in range from extremely short to medium, long, and automated. This study analyses a wide variety of missiles and classifies them according to the criteria that distinguish them, including the type of missile, its target, its range, how it is launched, and whether or not it has an autopilot guiding system (APG)
THRUST GENERATION BY ION PROPULSION TECHNOLOGY
Full text linkElectric propulsion system proven to be a suitable and efficient alternative for conventional propulsion systems .Ion thrusters is one of the electric propulsion systems. It has very high specific impulse generation (Isp) and consumes very low amount of fuel. Ion thrusters can easily compete with chemical rockets propulsion, even if the thrust produce is very low compares to chemical propulsion. Ion propulsion system can be used for various space missions like orbit station keeping for geostationary satellite, orbit and altitude controlling, multi-goal missions. Ion thrusters are more compatible for deep space missions as they are tested for endurance test where as chemical proportion is highly unsuitable for deep space mission
Design And Analysis of Aircraft Wing
Full text linkThis research develops and analyses a general aviation plane. A preliminary representation of the eventual product is used to start the design process for an airplane. Based on a drawing, a design mission profile is utilized to determine the weight. A more advanced approach is used to estimate weight, which employs calculated performance criteria to produce a more exact weight estimate. The wing design has been demonstrated to be a feasible alternative for a similar general aviation aircraft. When traveling through air or other fluids, a wing is a type of fin that provides lift. Airfoils may be observed on the wings, which have a streamlined cross-section, as a result of this. The lift created by a wing is compared to the drag generated by it to determine its aerodynamic efficiency
Capacity Estimation Of Lithium Ion Battery To Evaluate SOH Using Machine Learning Method
Full text linkElectric Vehicles (EVs) are becoming more and more financially viable as the operating costs of EVs fall dramatically in comparison to Internal Combustion Engine Vehicles (ICEVs). To boost consumer trust in EVs even further, accurate State of Health - SOH measurement is essential. SOH in a battery is determined by a number of parameters, including current, voltage, age, and temperature. Estimating the SOH of a Lithium -ion battery chemistry is of a difficult task. Because lithium-ion batteries are extremely nonlinear, time-variant, and complicated electrochemical systems, this is the case. Two machine learning techniques are used in this article to estimate SOH from Lithium-ion battery cell experimental test data. Experiments are carried out using data from NASA\u27s Prognostic Center of Excellence
ANALYSIS OF BEHAVIOUR OF T JUNCTIONS BY VARYING ANGLES AND TYPE OF FLOW.
Full text linkT-junctions are one of the most difficult pipe fitting in terms of calculation of the head loss occurring through it. Various attempts have been made to derive the value of loss coefficients of the two branches of the tjunctions. Some formulas which involve area ratios and flow ratios are available. However, the use of these coefficients has to be further scrutinized. The erroneous effect of the use of constant loss co-efficients needed to understood and reviewed. This has been done, through the use of a standard network and the simplest network having one T-junction. Further efforts have been made to minimize the losses occurred at t-junctions and the implications of it in engineering design have been discussed
An Efficient ICI Cancellation Scheme to Mitigate the Effect of ICI on OFDM Systems
Full text linkInter-carrier interference (ICI) emerges in orthogonal frequency division multiplexing (OFDM) systems used for mobile communication as a consequence of the Doppler Effect\u27s loss of orthogonality among subcarriers. Inter-Carrier Interference (ICI), which affects every subcarrier, drastically lowers performance. The performance of OFDM systems may be enhanced using a variety of ICI mitigation strategies. Comparable subcarrier frequency offsets are guaranteed by the premise that the OFDM transmission bandwidth is suitably modest in the majority of ICI mitigation strategies, on the other hand. The frequency offsets between each subcarrier might change, hence a wideband OFDM system in a situation with high mobility is investigated. Furthermore, the suggested ICI cancellation approach, Total ICI Cancellation, does not reduce bandwidth efficiency or transmission rate. As an example, the Total ICI Cancellation approach uses the ICI matrix\u27s orthogonality to provide perfect ICI cancellation and a significant boost in BER at a linearly increasing cost. The suggested technique, which matches the BER performance of a wideband OFDM system without ICI, offers the best BER performance possible in the presence of frequency offset and time shifts in the channel, according to simulation findings in the AWGN and multipath fading channels
Editorial
Full text linkThis special edition is devoted to Pedagogies for Higher Education, which has become an important research area in this decade. Higher education faces many challenges like engaging reluctant students, implementing active learning pedagogies effectively for diverse and large classes etc. This issue tried to incorporate various solutions and case studies to cater above mentioned challenges in higher education
Reshaping Learning and Teaching: Ensuring Equal Accessibility, Affordability and Multi-Disciplinary approach in Higher Education through Technology
Full text linkThe government of India crafted and then launched National Education Policy (NEP) on 29 July, 2020 to reform Indian education system that ensures equal access, affordability, quality, and accountability to each citizen. The policy targeted towards emerging demands and requirements for knowledge and skill to empower the citizen. It has many features including a new structure of 5+3+3+4 curricular that emphasises early childhood care, recognising a need for literacy and numeracy, introducing vocational education, technical education and internship in school from 6th grade, setting up a National Assessment centre called “PARAKH” to ensure learning and development, and ensuring education become more equitable and inclusive, especially to the socially and economically disadvantaged groups. There are some issues such as lack of modern infrastructure, low teacher ratio in schools, colleges and universities; fewer efforts to promote the English language from early education, and lack of resources to provide adequate skill and training to students that need to address for efficient implementation of new education policy. This paper attempts to address recent advancement in technology such as Artificial Intelligence (AI), Machine Learning (ML), and Internet of Things (IoT) plays a vital role to break such barriers and help the government at the initial stage to implement new education policy in an efficient and effective manner