In the past decade, the wireless industry has undergone a metamorphosis. This industry has turned from a predominantly military driven market to a cost conscious, consumer driven commercial market. At the same time, the wireless applications are moving up in the frequency spectrum. A typical example would be the PCS system. The PCS systems are currently designed for 1.9 GHz spectrum, but the ne...

Terahertz (THz) technology is a recent promising technology that plays an important role in various areas, including national defense, military, materials, chemistry, medicine, pharmaceutical, communications, and many other fields. In this article, the application of terahertz spectroscopy to protein detection is reviewed. The theoretical foundation of terahertz technology in protein detection ...

Radio communications using ultra wideband (UWB) frequency have rapidly developed since the beginning of the year 2000. This technique offers advantages that made it attractive to a large number of civilian and military applications. The aim of this work is the study of the geometry features of a UWB antenna and the improvement of the bandwidth by inserting slots. To obtain a very large bandwidt...

Large-scale hybrid networks that include wireless, wired, and satellite-based communications are becoming common in both military and commercial situations. This paper describes a scalable simulation environment that effectively utilizes parallel execution to reduce the simulation time of detailed high-fidelity models of large communication networks. The paper also presents a set of case studie...

This is a new, revised and enlarged edition of Major Caldwell's well-known book on Military Hygiene. It gives a good account of those principles of sanitation which most nearly affect the soldier in his eveiy-day life, whether at home, abroad or in the field. Though primarily written for medical officers of his own Corps it is also hoped that it will be useful to officers of other branches of t...

Organised nonviolent struggle, as an alternative to military methods, can be greatly aided by appropriate scientific research and technological development. The project involves surveying research and development relevant to a number of areas—such as industry, food production and communications—to assess its relevance to nonviolent struggle. The findings will be used to determine how science an...

In wireless communications, particularly the military space, software-defined radio (SDR) is the goal. The basic concept of SDR is to position the digital-to-analog separation as close as possible to the antenna. This is accomplished by implementing many functions traditionally performed by analog circuits using reconfigurable digital circuits. Successfully implemented, this can deliver an obso...

OVER THE LAST 25 years the United States has become increasingly dependent on space-based systems to support its military forces, and this trend is likely to continue for some time. Satellite systems have become an integral part of nuclear deterrence by providing strategic warning of an attack, tactical warning of missile launches, reliable communications between command authorities and nuclear...

This paper presents a structured approach for quantitative risk assessment and subsequent safety analysis of the General Atomics urban maglev system that is under development. This approach, broadly based upon industry standards such as U.S. Military Standard 882C, AREMA Communications & Signals Manual Section 17, and CENELEC Norm EN50129, is applicable to any safety-critical system, and has be...

The article describes the preparation of Soviet railway network for a possible military conflict in late 1930s – early 1940s. state western direction is considered and analysed. possibilities transfer troops materiel by rail on border territory Union have been identified. Similar identified forces means potential enemy to with USSR. scale construction production works carried out pre-war period...