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Signals (military)
Military communications or military signals involve all aspects of communications, or conveyance of information, by armed forces. Military communications span from pre-history to the present. The earliest military communications were delivered by runners. Later, communications progressed to visual and audible signals, and then advanced into the electronic age. Examples from ''Jane's Military Communications'' include text, audio, facsimile, tactical ground-based communications, naval signalling, terrestrial microwave, tropospheric scatter, satellite communications systems and equipment, surveillance and signal analysis, security, direction finding and jamming.IHS Jane'sMilitary Communications Retrieved 2012-01-23. History In past centuries communicating a message usually required someone to go to the destination, bringing the message. Thus, the term ''communication'' often implied the ability to transport people and supplies. A place under siege was one that lost communicati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Courrier
Courrier may refer to: *''Courrier International'', a Paris-based French weekly newspaper *''Courrier des États-Unis'', a French language newspaper published by French immigrants in New York *''Courrier d'Ethiopie'', a French language weekly newspaper published in Addis Ababa during 1913-1936 See also *Courier (other) *Courrier sud (other) *Courrière, a village in the municipality of Assesse in the province of Namur, Belgium *Courrières Courrières () is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. Geography An ex-coalmining commune, now a light industrial and farming town, situated some northeast of Lens, at the junction of the D46 and D ..., a commune in the Pas-de-Calais department in the Nord-Pas-de-Calais region of France [Baidu] |
IHS Inc
IHS may refer to: Religious * Christogram IHS or ΙΗΣ, a monogram symbolizing Jesus Christ * ''In hoc signo'', used by Roman emperor Constantine the Great Organizations * Indian Health Service, an operating division of the US Department of Health and Human Services * Dictaphone company division for healthcare dictating applications * IHS Markit, a data publishing company (Information Handling Services) that originated in 1959, and has since merged with Markit. Institutes * Institute for Housing and Urban Development Studies, an international institute * Institute for Humane Studies, a US educational organization * Institute for Humanist Studies, a think tank based in Washington, DC Societies * Indiana Historical Society, a historical society in the US * International Headache Society, organisation for professionals helping people affected by headache * International Horn Society, organization dedicated to horn-players * Ipswich Historical Society, in Ipswich, Massachusetts, US ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Informational Society
An information society is a society where the usage, creation, distribution, manipulation and integration of information is a significant activity. Its main drivers are information and communication technologies, which have resulted in rapid information growth in variety and is somehow changing all aspects of social organization, including education, economy, health, government, warfare, and levels of democracy. The people who are able to partake in this form of society are sometimes called either computer users or even digital citizens, defined by K. Mossberger as “Those who use the Internet regularly and effectively”. This is one of many dozen internet terms that have been identified to suggest that humans are entering a new and different phase of society. Some of the markers of this steady change may be technological, economic, occupational, spatial, cultural, or a combination of all of these. Information society is seen as a successor to industrial society. Closely related ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weapons
A weapon, arm or armament is any implement or device that can be used to deter, threaten, inflict physical damage, harm, or kill. Weapons are used to increase the efficacy and efficiency of activities such as hunting, crime, law enforcement, self-defense, warfare, or suicide. In broader context, weapons may be construed to include anything used to gain a tactical, strategic, material or mental advantage over an adversary or enemy target. While ordinary objects – sticks, rocks, bottles, chairs, vehicles – can be used as weapons, many objects are expressly designed for the purpose; these range from simple implements such as clubs, axes and swords, to complicated modern firearms, tanks, intercontinental ballistic missiles, biological weapons, and cyberweapons. Something that has been re-purposed, converted, or enhanced to become a weapon of war is termed weaponized, such as a weaponized virus or weaponized laser. History The use of weapons is a major driver of cultural ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Civilian
Civilians under international humanitarian law are "persons who are not members of the armed forces" and they are not "combatants if they carry arms openly and respect the laws and customs of war". It is slightly different from a non-combatant, because some non-combatants are not civilians (for example, military chaplains who are attached to the belligerent party or military personnel who are serving with a neutral country). Civilians in the territories of a party to an armed conflict are entitled to certain privileges under the customary laws of war and international treaties such as the Fourth Geneva Convention. The privileges that they enjoy under international law depends on whether the conflict is an internal one (a civil war) or an international one. In some nations, uniformed members of civilian police or fire departments colloquially refer to members of the public as civilians. Etymology The word "civilian" goes back to the late 14th century and is from Old French '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Signaller
A signaller, signalman, colloquially referred to as a radioman or signaleer in the armed forces is a specialist soldier, sailor or airman responsible for military communications. Signallers, a.k.a. Combat Signallers or signalmen or women, are commonly employed as radio or telephone operators, relaying messages for field commanders at the front line (Army units, Ships or Aircraft), through a chain of command which includes field headquarters. Messages are transmitted and received via a communications infrastructure comprising fixed and mobile installations. Duties In the past, signalling skills have included the use of: Heliograph, Aldis lamp, semaphore flags, "Don R" (Dispatch Riders) and even carrier pigeons. Modern signallers are responsible for the battlefield voice and data communication and information technology infrastructure or in common English terms, they may carry a backpack radio transceiver used to communicate to forward operating bases (large and small outposts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cursus Publicus
The ''cursus publicus'' (Latin: "the public way"; grc, δημόσιος δρόμος, ''dēmósios drómos'') was the state mandated and supervised courier and transportation service of the Roman Empire, later inherited by the Eastern Roman Empire. It was a system based on obligations placed on private persons by the Roman State. As contractors, called ''mancipes'', they provided the equipment, animals, and wagons. In the Early Empire compensation had to be paid but this had fallen into abeyance in Late Antiquity when maintenance was charged to the inhabitants along the routes. The service contained only those personnel necessary for administration and operation. These included veterinarians, wagon-wrights, and grooms. The couriers and wagon drivers did not belong to the service: whether public servants or private individuals, they used facilities requisitioned from local individuals and communities. The costs in Late Antiquity were charged to the provincials as part of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Semaphore
Semaphore (; ) is the use of an apparatus to create a visual signal transmitted over distance. A semaphore can be performed with devices including: fire, lights, flags, sunlight, and moving arms. Semaphores can be used for telegraphy when arranged in visually connected networks, or for traffic signalling such as in railway systems, or traffic lights in cities. Fire The Phryctoriae were a semaphore system used in Ancient Greece for the transmission of specific prearranged messages. Towers were built on selected mountaintops, so that one tower, the ''phryctoria'', would be visible to the next tower, usually twenty-miles distant. Flames were lit on one tower, then the next tower would light a flame in succession. The Byzantine beacon system was a semaphore developed in the 9th century during the Arab–Byzantine wars. The Byzantine Empire used a system of beacons to transmit messages from the border with the Abbasid Caliphate across Asia Minor to the Byzantine capital, Const ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptography
Cryptography, or cryptology (from grc, , translit=kryptós "hidden, secret"; and ''graphein'', "to write", or ''-logia'', "study", respectively), is the practice and study of techniques for secure communication in the presence of adversarial behavior. More generally, cryptography is about constructing and analyzing protocols that prevent third parties or the public from reading private messages. Modern cryptography exists at the intersection of the disciplines of mathematics, computer science, information security, electrical engineering, digital signal processing, physics, and others. Core concepts related to information security ( data confidentiality, data integrity, authentication, and non-repudiation) are also central to cryptography. Practical applications of cryptography include electronic commerce, chip-based payment cards, digital currencies, computer passwords, and military communications. Cryptography prior to the modern age was effectively synonymo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Signal
In signal processing, a signal is a function that conveys information about a phenomenon. Any quantity that can vary over space or time can be used as a signal to share messages between observers. The ''IEEE Transactions on Signal Processing'' includes audio, video, speech, image, sonar, and radar as examples of signal. A signal may also be defined as observable change in a quantity over space or time (a time series), even if it does not carry information. In nature, signals can be actions done by an organism to alert other organisms, ranging from the release of plant chemicals to warn nearby plants of a predator, to sounds or motions made by animals to alert other animals of food. Signaling occurs in all organisms even at cellular levels, with cell signaling. Signaling theory, in evolutionary biology, proposes that a substantial driver for evolution is the ability of animals to communicate with each other by developing ways of signaling. In human engineering, signals are typi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
