杂项

Weaknesses in the National Aeronautics and Space Administration (NASA) export control policy and implementation of foreign national access procedures at some centers increase the risk of unauthorized …

As we know, reaching the outer rim of the solar system in a relatively short period of time is impossible utilizing existing rocket technology. Radically ventured theories such as quantum vacuum prop …

In physical cosmology, astronomy and celestial mechanics, dark energy is a hypothetical form of energy that permeates all of space and tends to increase the rate of expansion of the universe. Dark en …

This book provides important recommendations for how the Department of Defense can better face the rapidly changing security environment of the 21st century by increasing its adaptability. The study …

Photonic crystals are periodically structured electromagnetic media, possessing photonic band gaps, ie., ranges of frequency in which light cannot propagate through the structure. In this publication …

The study of fiber lasers is an advanced field of modern science entering all branches of science. This field continues to vastly expend with state-of-the-art developments across the entire spectrum …

The book subject is mathematical formalism, describing the creation of the dynamic and information regularities from stochastics. The formalism is based on the introduction of an informational path f …

Due to their unique flexibility and high reproducibility, lasers have been traditionally used in processes such as cutting, drilling, machining, welding or cladding. In recent years, with the develop …

This book presents and discusses a promising technology for fabrication of the one- and two-dimensional nanoperiodic structures on the solid surfaces by direct two- and four-beam standing wave pulsed …