Satellite communication is a technology that is used to transfer the signals from the transmitter to a receiver with the help of satellites. Communications via satellite have the unique characteristic of the ability to cover the globe with a flexibility that cannot be duplicated with terrestrial links. Mobile satellite service …

National security has been described as the ability of a state to cater to the protection and defence of its citizenry. It includes Human security which means freedom from pervasive threats to people’s rights, safety, and lives. Homeland security means protecting the nation against terrorism, natural or man-made disasters, as …

Businessmen are traveling longer distances to meet potential clients, launch new projects, and negotiate deals, but traveling comes with poor sleep and jet lag. Science tells us jet lag causes everything from headaches to irritability, poor decision making, and loss of concentration. Warfighters are travelers and thus suffer from travelers’ …

Since the start of the Covid pandemic,  as early research has indicated, the impact of social isolation and other life stressors on mental health has led to an increase in depression and anxiety. This can result in declines in social cohesion and social capital and can increase an individual’s willingness …

A rapidly increasing percentage of the world’s population is connected to the global information environment. The new information age has seen rise of social media, bloggers, smartphones, plethora of cable and satellite news channels. It can also be seen in the ongoing Internet of things revolution, the internetworking of physical …

Vehicles propelled by rocket engines are commonly called rockets. Rocket vehicles carry their own oxidizer, unlike most combustion engines, so rocket engines can be used in a vacuum to propel spacecraft and ballistic missiles. Compared to other types of jet engines, rocket engines are the lightest and have the highest …