Summary

HandWiki is the world's largest wiki-style encyclopedia dedicated to science, technology and computing. It allows you to create and edit articles as long as you have external citations and login account. In addition, this is a content management environment that can be used for collaborative editing of original scholarly content, such as books, manuals, monographs and tutorials.

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AAUSAT3
AAUSAT3 is the third CubeSat built and operated by students from the Aalborg University in Denmark . It was launched on 25 February 2013 from the Satish Dhawan Space Centre in India on a PSLV rocket (number C20). AAUSAT3 carries two AIS receivers as the main payload.
  • 675
  • 17 Oct 2022
Topic Review
Women of Color
Women of color (singular: woman of color, sometimes abbreviated as WOC) is a phrase used to describe female non-whites. The political term "women of color" surfaced in the violence against women movement. In the late seventies it unified all women experiencing multiple layers of marginalization with race or ethnicity as a common issue.
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  • 17 Oct 2022
Topic Review
Deep Venous Thrombosis
Deep-vein thrombosis (also known as deep-venous thrombosis or DVT and colloquially as economy class syndrome) is the formation of a blood clot ("thrombus") in a deep vein. It commonly affects the leg veins, such as the femoral vein or the popliteal vein or the deep veins of the pelvis. Occasionally the veins of the arm are affected (known as Paget-Schrötter disease). Thrombophlebitis is the more general class of pathologies of this kind.
  • 866
  • 17 Oct 2022
Topic Review
Bumble (App)
Bumble is a location-based social application that facilitates communication between interested users. In heterosexual matches, only female users can make the first contact with matched male users, while in same-sex matches either person can send a message first. Users can sign up using their phone number or Facebook profile, and have options of searching for romantic matches or, in "BFF mode", friends. Bumble Bizz facilitates business communications. Bumble was founded by Whitney Wolfe Herd shortly after she left Tinder, a dating app she co-founded, due to growing tensions with other company executives. Wolfe Herd has described Bumble as a "feminist dating app". As of September 2019, with a monthly user base of 5 million, Bumble is the second-most popular dating app in the U.S. after Tinder. According to a June 2016 survey, 46.2% of its users are female. According to Forbes , the company is valued at more than $1 billion, and has over 55 million users.
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  • 17 Oct 2022
Topic Review
Dilophosaurus
Dilophosaurus (/daɪˌloʊfəˈsɔːrəs, -foʊ-/ dy-LOH-fə-SOR-əs, -⁠foh-) is a genus of theropod dinosaurs that lived in what is now North America during the Early Jurassic, about 193 million years ago. Three skeletons were discovered in northern Arizona in 1940, and the two best preserved were collected in 1942. The most complete specimen became the holotype of a new species in the genus Megalosaurus, named M. wetherilli by Samuel P. Welles in 1954. Welles found a larger skeleton belonging to the same species in 1964. Realizing it bore crests on its skull, he assigned the species to the new genus Dilophosaurus in 1970, as Dilophosaurus wetherilli. The genus name means "two-crested lizard", and the species name honors John Wetherill, a Navajo councilor. Further specimens have since been found, including an infant. Footprints have also been attributed to the animal, including resting traces. Another species, Dilophosaurus sinensis from China, was named in 1993, but was later found to belong to the genus Sinosaurus. At about 7 m (23 ft) in length, with a weight of about 400 kg (880 lb), Dilophosaurus was one of the earliest large predatory dinosaurs and the largest known land-animal in North America at the time. It was slender and lightly built, and the skull was proportionally large, but delicate. The snout was narrow, and the upper jaw had a gap or kink below the nostril. It had a pair of longitudinal, arched crests on its skull; their complete shape is unknown, but they were probably enlarged by keratin. The mandible was slender and delicate at the front, but deep at the back. The teeth were long, curved, thin, and compressed sideways. Those in the lower jaw were much smaller than those of the upper jaw. Most of the teeth had serrations at their front and back edges. The neck was long, and its vertebrae were hollow, and very light. The arms were powerful, with a long and slender upper arm bone. The hands had four fingers; the first was short but strong and bore a large claw, the two following fingers were longer and slenderer with smaller claws; the fourth was vestigial. The thigh bone was massive, the feet were stout, and the toes bore large claws. Dilophosaurus is a member of the family Dilophosauridae along with Dracovenator, a group placed between the Coelophysidae and later theropods. Dilophosaurus would have been active and bipedal, and may have hunted large animals; it could also have fed on smaller animals and fish. Due to the limited range of movement and shortness of the forelimbs, the mouth may instead have made first contact with prey. The function of the crests is unknown; they were too weak for battle, but may have been used in visual display, such as species recognition and sexual selection. It may have grown rapidly, attaining a growth rate of 30 to 35 kg (66 to 77 lb) per year early in life. The holotype specimen had multiple paleopathologies, including healed injuries and signs of a developmental anomaly. Dilophosaurus is known from the Kayenta Formation, and lived alongside dinosaurs such as Megapnosaurus and Sarahsaurus. Dilophosaurus was featured in the novel Jurassic Park and its movie adaptation, wherein it was given the fictional abilities to spit venom and expand a neck frill, as well as being smaller than the real animal. It was designated as the state dinosaur of Connecticut based on tracks found there.
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  • 18 Oct 2022
Topic Review
Database Administration and Automation
Database administration is the function of managing and maintaining database management systems (DBMS) software. Mainstream DBMS software such as Oracle, IBM DB2 and Microsoft SQL Server need ongoing management. As such, corporations that use DBMS software often hire specialized information technology personnel called Database Administrators or DBAs.
  • 1.0K
  • 17 Oct 2022
Topic Review
Archaeology of Wales
The Archaeology of Wales is the study of human occupation within the country of Wales, which has been occupied by modern humans since 225,000 BCE, with continuous occupation from 9,000 BCE. Analysis of the sites, artifacts and other archaeological data within Wales details its complex social landscape and evolution from Prehistoric times to the Industrial period. This study is undertaken by academic institutions, consultancies, charities as well as government organisations.
  • 1.4K
  • 17 Oct 2022
Topic Review
Handfasting
Handfasting is a traditional practice that, depending on the term's usage, may correspond to an unofficiated wedding (in which a couple marries without an officiant, usually with the intent of later undergoing a second wedding with an officiant), a betrothal (an engagement in which a couple has formally promised to wed, and which can be broken only through divorce), or a temporary wedding (in which a couple makes an intentionally temporary marriage commitment). The phrase refers to the making fast of a pledge by the shaking or joining of hands. The terminology and practice is especially associated with Germanic peoples, including the English and Norse, as well as the Gaelic Scots. As a form of betrothal or unofficiated wedding, it was common up through Tudor England; as a form of temporary marriage, it was practiced in 17th-century Scotland and has been revived in Neopaganism. Sometimes the term is also used synonymously with "wedding" or "marriage" among Neopagans to avoid perceived non-Pagan religious connotations associated with those terms. It is also used, apparently ahistorically, to refer to an alleged pre-Christian practice of symbolically fastening or wrapping the hands of a couple together during the wedding ceremony.
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  • 17 Oct 2022
Topic Review
Type C8-class Ship
Type C8-class ships are a type of Heavy Lift Barge Carrier. Type C8 ships were the 8th type of ship designed by the United States Maritime Commission (MARCOM) in the late 1960s. As done with the Type C1 ships and Type C2 ships, MARCOM circulated preliminary plans for comment. The design presented was not specific to any service or trade route. Type C8 ships measuring 876 feet (267 m) from stem to stern, and designed to make 16.2 knots (30.0 km/h; 18.6 mph).
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  • 17 Oct 2022
Topic Review
Adverse Possession
Adverse possession, sometimes colloquially described as "squatter's rights",[lower-alpha 1] is a legal principle that applies when a person who does not have legal title to a piece of property—usually land (real property)—attempts to claim legal ownership based upon a history of possession or occupation of the land without the permission of its legal owner. In general, a property owner has the right to recover possession of their property from unauthorized possessors through legal action such as ejectment. However, in the English common law tradition, courts have long ruled that when someone occupies a piece of property without permission and the property's owner does not exercise their right to recover their property for a significant period of time, not only is the original owner prevented from exercising their right to exclude, but an entirely new title to the property springs up in the adverse possessor. In effect, the adverse possessor becomes the property's new owner.[lower-alpha 2] Over time, legislatures have created statutes of limitations that specify the length of time that owners have to recover possession of their property from adverse possessors. In the United States, for example, these time limits vary widely between individual states, ranging from as low as five years to as many as 40 years. Although the elements of an adverse possession action are different in every jurisdiction, a person claiming adverse possession is usually required to prove non-permissive use of the property that is actual, open and notorious, exclusive, adverse, and continuous for the statutory period.[lower-alpha 3] Personal property, traditionally known as "chattel", may also be adversely possessed, but owing to the differences in the nature of real and chattel property, the rules governing such claims are rather more stringent, and favor the legal owner rather than the adverse possessor. Claims for adverse possession of chattel often involve works of art.
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  • 17 Oct 2022
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