Rajesh Uppal
October 5, 2023 Cyber & IW
108
Steganography is the art of concealing a message or information within another seemingly innocent message. The word “steganography” comes from the Greek words “steganos,” meaning “covered,” and “graphein,” meaning “to write.” In other words, steganography is the art of hiding a message in plain sight. Steganography differs from cryptography because …
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Rajesh Uppal
October 4, 2023 Photonics
100
Lithium niobate (LiNbO3) is a promising material for integrated photonics, with a wide range of potential applications including telecommunications, sensing, and optical computing. LiNbO3 is a ferroelectric material, meaning that it has a permanent electric polarization. This polarization can be controlled by applying an external electric field, which makes LiNbO3 …
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Rajesh Uppal
October 4, 2023 AI & IT, Space Technology, Defense & Exploration
1,456
The Internet of Things (IoT) is a system of interrelated computing devices, mechanical and digital machines, objects, animals or people that are provided with unique identifiers (UIDs) and the ability to transfer data over a network without requiring human-to-human or human-to-computer interaction. The Internet of Things (IoT) is now globally …
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Rajesh Uppal
October 3, 2023 Photonics
286
Light confinement is a fascinating phenomenon that has been studied extensively in the field of optics. It refers to the ability to control the propagation of light by confining it to a certain region or path. In this article, we will explore what light confinement is, how it works, and …
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Rajesh Uppal
October 2, 2023 Biotech & Synthetic Biology, Geopolitics, Strategy & Technological Rivalries
152
The U.S. bioeconomy already accounts for about 5% of the country’s gross domestic product ($960 billion) and is rapidly expanding. Biomanufacturing is becoming a major mode of production for a wide range of industries, from pharmaceuticals and industrial chemicals to food and fuels. Biotechnologies can also play important roles in …
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Rajesh Uppal
October 1, 2023 Material, Space Technology, Defense & Exploration
829
As human exploration of deep space becomes more of a reality, radiation shielding technologies are becoming increasingly important to protect aerospace and defense electronics. Radiation in deep space can be extremely harmful to electronic components, causing malfunctions, data loss, and even complete system failure. One of the biggest threat to …
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Rajesh Uppal
October 1, 2023 Comm. & Networking, Human & Soldier Systems
121
The modern battlefield is constantly evolving, with new threats and challenges emerging all the time. To stay ahead of the curve, military organizations around the world are turning to advanced technologies like soldier body networks to enhance communication and situational awareness on the battlefield. These networks provide soldiers with real-time …
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Rajesh Uppal
September 30, 2023 Cyber & IW, Human & Soldier Systems
155
Smartphones are ubiquitous in modern society, and their use has become increasingly prevalent in government agencies and other sensitive settings. However, this increasing reliance on mobile technology has also raised significant concerns regarding national security. Research indicates that smartphones pose a significant security threat to government agencies and other organizations …
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Rajesh Uppal
September 29, 2023 Electronics & EW, Space Technology, Defense & Exploration
1,338
Nanosatellite and microsatellite refer to miniaturized satellites in terms of size and weight, in the range of 1-10 Kg and 10-100 kg, respectively. These are the fastest growing segments in the satellite industry. ‘CubeSat’ is one of the most popular types of miniaturized satellites. CubeSats were made possible by the …
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Rajesh Uppal
September 29, 2023 Space Technology, Defense & Exploration
147
Building and launching Satellites are costly business. Making a satellite can cost from $290 million upwards, while a single satellite launch can range in cost from a low of about $50 million to a high of about $400 million. Any fault could lead to making billion dollar satellite useless and …
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