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Software Cyborgs of Tomorrow
Published in Rocky Dr. Termanini, The Nano Age of Digital Immunity Infrastructure Fundamentals and Applications, 2018
The defense and critical infrastructure of many industrial nations (first and second worlds), including the United States, has become more reliant on satellite systems. This increased use and dependence comes with a downside. Because satellite systems are integrated into national security systems and emergency response systems and are critical components for the modern military, satellites have become an attractive target of cyberattacks. As the reliance grows, so do the threats of cyberattacks from criminals, terrorists, and nations.
Stochastic model predictive control-based countermeasure methodology for satellites against indirect kinetic cyber-attacks
Published in International Journal of Control, 2023
M. Amin Alandihallaj, Nima Assadian, Khashayar Khorasani
Several unintentional high-speed collisions among active satellites and orbital debris have occurred during the past few years. The first verified space collision between two Earth-orbiting artificial objects occurred in 1996. This was the collision between a French military satellite known as Cerise and a classified space debris object from an Ariane rocket stage (Schildknecht, 2007). The satellite lost its gravity gradient boom as a result of the collision. The collision between the Iridium-33 communication satellite and the Russian Cosmos-2251 spacecraft in 2009 is known as the most destructive space collision as it has added more than 2000 pieces of debris to the Earth space environment (Pardini & Anselmo, 2017). Furthermore, two space collisions in 2013 have resulted in some damages and changes in both orbits and spin rates (Swartwout, 2016; Marboe, 2016). Although a collision between two fast-moving satellites can be accidental or intentional, some researchers believe that these kinds of space collisions may be a result of cyber-attacks that are applied to satellites (Kallberg, 2012).
Stress-Strength Reliability Estimation of a Series System with Cold Standby Redundancy Based on Kumaraswamy Half-Logistic Distribution
Published in American Journal of Mathematical and Management Sciences, 2023
Thomas Xavier, Joby K. Jose, Subhash C. Bagui
Standby redundancy plays an important role in inflating the system reliability, it was first studied by Sriwastav and Kakati (1981). The use of such systems is that when one unit in the system operates the other is kept at standby and once the operating system fails, the standby unit starts working. Clearly this gives much higher reliability to the system which makes it extensively adopted in many applications. For example, in military satellite, standby redundancy system can improve the lifetime of the satellite. Standby redundancy can be applied at component or system levels. The effectiveness of adding cold standby redundancy to a coherent system at system and component levels is studied by Eryilmaz (2017).
Estimation of higher order statistical parameters for image enhancement on pure and nano-dispersed dodecyloxyBenzoic acid
Published in Liquid Crystals, 2020
Durga Prasad Tripathi, P. Pardhasaradhi, B. T. P. Madhav, R. K. N. R. Manepalli, U. R. Jena
Image Contrast Enhancement plays a very vital and significant role in image processing. Extraction of image details from a dark region means providing more information about the features hidden in an image. This plays a very crucial role in various fields such as Military, Satellite communication, Medical Image analysis and several more fields where visualisation of image features is utmost important. There are several reasons behind the acquisition of poor contrast images, viz. images captured during poor or excessive illumination conditions, due to wrong setting of imaging device and lots more.