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IP Over Avian Carriers
In computer networking, IP over Avian Carriers (IPoAC) is an ostensibly functional proposal to carry Internet Protocol (IP) traffic by birds such as homing pigeons. IP over Avian Carriers was initially described in issued by the Internet Engineering Task Force, written by David Waitzman, and released on April 1, 1990. It is one of several April Fools' Day Request for Comments. Waitzman described an improvement of his protocol in , ''IP over Avian Carriers with Quality of Service'' (1 April 1999). Later, in —released on 1 April 2011, and 13 years after the introduction of IPv6— Brian Carpenter and Robert Hinden published ''Adaptation of RFC 1149 for IPv6''. IPoAC has been successfully implemented, but for only nine packets of data, with a packet loss ratio of 55% (due to operator error), and a response time ranging from to over . Thus, this technology suffers from extremely high latency. Real-life implementation On 28 April 2001, IPoAC was implemented by the Ber ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taube Vor Scheßlitz (cropped)
Taube is a surname. It may refer to: People * Taube family, a Baltic Swedish-German noble family Persons * Aino Taube (1912–1990), Swedish film and theatre actress * Arvid Taube (1853–1916), Swedish politician and noble * Astri Taube (1898–1980), Swedish sculptor, married to Evert Taube * Carl Taube (1939–1989), American statistician * Carlo Taube (1897–1944), Austro-Hungarian pianist, composer, conductor * Evert Taube (1890–1976), Swedish author, artist, composer and singer, married to Astri Taube * Hedvig Taube (1714–1744), Swedish noble and salonist, official royal mistress to King Frederick I of Sweden * Helene Taube (1860–1930), Baltic German noblewoman * Henry Taube (1915–2005), Canadian-born American chemist awarded the 1983 Nobel Prize in Chemistry * Karl Taube (born 1957), American Mesoamericanist, archaeologist, epigrapher and ethnohistorian * Mel Taube (1904–1979), American football, basketball, and baseball player and coach * Mikhail Taube ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Packet (information Technology)
In telecommunications and computer networking, a network packet is a formatted unit of Data (computing), data carried by a packet-switched network. A packet consists of control information and user data; the latter is also known as the ''Payload (computing), payload''. Control information provides data for delivering the payload (e.g., source and destination network addresses, error detection codes, or sequencing information). Typically, control information is found in packet Header (computing), headers and Trailer (computing), trailers. In packet switching, the Bandwidth (computing), bandwidth of the transmission medium is shared between multiple communication sessions, in contrast to circuit switching, in which circuits are preallocated for the duration of one session and data is typically transmitted as a continuous bit stream. Terminology In the seven-layer OSI model of computer networking, ''packet'' strictly refers to a protocol data unit at layer 3, the network layer. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
H5N1 Virus
Influenza A virus subtype H5N1 (A/H5N1) is a subtype of the influenza A virus, which causes the disease avian influenza (often referred to as "bird flu"). It is enzootic (maintained in the population) in many bird populations, and also panzootic (affecting animals of many species over a wide area). A/H5N1 virus can also infect mammals (including humans) that have been exposed to infected birds; in these cases, symptoms are frequently severe or fatal. A/H5N1 virus is shed in the saliva, mucus, and feces of infected birds; other infected animals may shed bird flu viruses in respiratory secretions and other body fluids (such as milk). The virus can spread rapidly through poultry flocks and among wild birds. An estimated half billion farmed birds have been slaughtered in efforts to contain the virus. Symptoms of A/H5N1 influenza vary according to both the strain of virus underlying the infection and on the species of bird or mammal affected. Classification as either Low Pathogenic Av ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Passenger Pigeon
The passenger pigeon or wild pigeon (''Ectopistes migratorius'') is an bird extinction, extinct species of Columbidae, pigeon that was endemic to North America. Its common name is derived from the French word ''passager'', meaning "passing by", due to the migratory habits of the species. The scientific name also refers to its migratory characteristics. The morphologically similar mourning dove (''Zenaida macroura'') was long thought to be its closest relative, and the two were at times confused, but genetic analysis has shown that the genus ''Patagioenas'' is more closely related to it than the Zenaida doves, ''Zenaida'' doves. The passenger pigeon was sexually dimorphic in size and coloration. The male was in length, mainly gray on the upperparts, lighter on the underparts, with iridescent bronze feathers on the neck, and black spots on the wings. The female was , and was duller and browner than the male overall. The juvenile was similar to the female, but without iridescence ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kiwi (bird)
Kiwi are flightless birds endemism, endemic to New Zealand of the Order (biology), order Apterygiformes. The five extant species fall into the family Apterygidae and genus ''Apteryx''. Approximately the size of a domestic chicken, kiwi are the smallest ratites (which also include ostriches, emus, rhea (bird), rheas, cassowary, cassowaries and the extinct elephant birds and moa). DNA sequence comparisons have yielded the conclusion that kiwi are much more closely related to the extinct Malagasy elephant birds than to the moa with which they shared New Zealand. There are five recognised species, four of which are currently listed as Vulnerable species, vulnerable, and Little spotted kiwi, one of which is Near-threatened species, near threatened. All species have been negatively affected by historic Deforestation in New Zealand, deforestation, but their remaining habitat is well protected in large forest reserves and national parks. At present, the greatest threat to their surviva ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hop (networking)
In wired computer networking a hop occurs when a packet is passed from one network segment to the next. Data packets pass through routers as they travel between source and destination. The hop count refers to the number of network devices through which data passes from source to destination (depending on routing protocol, this may include the source/destination, that is, the first hop is counted as hop 0 or hop 1). Since store and forward and other latencies are incurred through each hop, a large number of hops between source and destination implies lower real-time performance. Hop count In wired networks, the hop count refers to the number of networks or network devices through which data passes between source and destination (depending on routing protocol, this may include the source/destination, that is, the first hop is counted as hop 0 or hop 1). Thus, hop count is a rough measure of distance between two hosts. For a routing protocol using 1-origin hop counts (such a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Storm
A storm is any disturbed state of the natural environment or the atmosphere of an astronomical body. It may be marked by significant disruptions to normal conditions such as strong wind, tornadoes, hail, thunder and lightning (a thunderstorm), heavy precipitation ( snowstorm, rainstorm), heavy freezing rain ( ice storm), strong winds (tropical cyclone, windstorm), wind transporting some substance through the atmosphere such as in a dust storm, among other forms of severe weather. Storms have the potential to harm lives and property via storm surge, heavy rain or snow causing flooding or road impassibility, lightning, wildfires, and vertical and horizontal wind shear. Systems with significant rainfall and duration help alleviate drought in places they move through. Heavy snowfall can allow special recreational activities to take place which would not be possible otherwise, such as skiing and snowmobiling. The English word comes from Proto-Germanic ''*sturmaz'' meaning "n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Broadcast Storm
A broadcast storm or broadcast radiation is the accumulation of broadcast and multicast traffic on a computer network. Extreme amounts of broadcast traffic constitute a ''broadcast storm''. It can consume sufficient network resources so as to render the network unable to transport normal traffic. A packet that induces such a storm is occasionally nicknamed a Chernobyl packet. Causes Most commonly the cause is a switching loop in the Ethernet network topology (i.e. two or more paths exist between switches). A simple example is both ends of a single Ethernet patch cable connected to a switch. As broadcasts and multicasts are forwarded by switches out of every port, the switch or switches will repeatedly rebroadcast broadcast messages and flood the network. Since the layer-2 header does not support a time to live (TTL) value, if a frame is sent into a looped topology, it can loop forever. In some cases, a broadcast storm can be instigated for the purpose of a denial of service (D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encapsulation (computer Programming)
In software systems, encapsulation refers to the bundling of data with the mechanisms or methods that operate on the data. It may also refer to the limiting of direct access to some of that data, such as an object's components. Essentially, encapsulation prevents external code from being concerned with the internal workings of an object. Encapsulation allows developers to present a consistent interface that is independent of its internal implementation. As one example, encapsulation can be used to hide the values or state of a structured data object inside a class. This prevents clients from directly accessing this information in a way that could expose hidden implementation details or violate state invariance maintained by the methods. Encapsulation also encourages programmers to put all the code that is concerned with a certain set of data in the same class, which organizes it for easy comprehension by other programmers. Encapsulation is a technique that encourages decoupli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of Prey
Birds of prey or predatory birds, also known as (although not the same as) raptors, are hypercarnivorous bird species that actively predation, hunt and feed on other vertebrates (mainly mammals, reptiles and smaller birds). In addition to speed and strength, these predators have bird vision, keen eyesight for detecting prey from a distance or during flight, strong feet with sharp talon (anatomy), talons for grasping or killing prey, and powerful, curved beaks for tearing off flesh. Although predatory birds primarily hunt live prey, many species (such as fish eagles, vultures and condors) also scavenge and eat carrion. Although the term "bird of prey" could theoretically be taken to include all birds that actively hunt and eat other animals, ornithologists typically use the narrower definition followed in this page, excluding many piscivorous predators such as storks, Crane (bird), cranes, herons, gulls, skuas, penguins, and kingfishers, as well as many primarily insectivorous bir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bird Flu
"Bird Flu" is an urumee melam-dance song by recording artist M.I.A. on her second studio album '' Kala'' (2007). It was released as a digital download in 2006 through XL Recordings under exclusive license to Interscope Records in the US. Critics noted its autobiographical lyrics "updated to the present day, where she's straddling the line between major-label success and her own crazy-ass major-label-bucking tendencies, singing she's too cool "to be a Rocawear model," whilst adding that she couldn't be a "rocker on a label"- they wouldn't have her because "...my beats were too evil." Also praised was the song's utilization of the folk urumee melam/gaana and dappankuthu music, Tamil genres of music that the writer was familiar with having grown up in Jaffna. Arulpragasam recorded the song using live drummers from temples in Chennai. M.I.A. wanted to work with Tamil folk music as it gave her a sense of rhythm as a child and she wanted to draw certain aspects from Indian music tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HADOPI
The French HADOPI law (, English: "Supreme Authority for the Distribution of Works and Protection of Copyright on the Internet") or Creation and Internet law () was introduced during 2009, providing what is known as a graduated response as a means to encourage compliance with copyright laws. HADOPI is the acronym of the government agency created to administer it. The part of the ''HADOPI law'' that allowed for suspension of Internet access to a repeat infringer was revoked on 8 July 2013 by the French government because that penalty was considered to be disproportionate. The power to impose fines or other sanctions on repeat infringers remains in effect. In January 2022, the Hadopi agency merged with the High Audiovisual Council (CSA), to form the Regulatory Authority for Audiovisual and Digital Communication (; ARCOM). Legislative passage Despite strong backing from President Nicolas Sarkozy, the bill was rejected by the French National Assembly on 9 April 2009. The French gov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
