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Hull
Hull may refer to: Structures * Chassis, of an armored fighting vehicle * Fuselage, of an aircraft * Hull (botany), the outer covering of seeds * Hull (watercraft), the body or frame of a ship * Submarine hull Mathematics * Affine hull, in affine geometry * Conical hull, in convex geometry * Convex hull, in convex geometry ** Carathéodory's theorem (convex hull) * Holomorphically convex hull, in complex analysis * Injective hull, of a module * Linear hull, another name for the linear span * Skolem hull, of mathematical logic Places England * Hull, the common name of Kingston upon Hull, a city in the East Riding of Yorkshire ** Hull City A.F.C., a football team ** Hull FC, rugby league club formed in 1865, based in the west of the city ** Hull Kingston Rovers (Hull KR), rugby league club formed in 1882, based in the east of the city ** Port of Hull ** University of Hull * River Hull, river in the East Riding of Yorkshire Canada * Hull, Quebec, a settlement opposite Ottawa, n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kingston Upon Hull
Kingston upon Hull, usually abbreviated to Hull, is a port city and unitary authorities of England, unitary authority in the East Riding of Yorkshire, England. It lies upon the River Hull at its confluence with the Humber Estuary, inland from the North Sea and south-east of York, the historic county town. With a population of (), it is the fourth-largest city in the Yorkshire and the Humber region after Leeds, Sheffield and Bradford. The town of Wyke on Hull was founded late in the 12th century by the monks of Meaux Abbey as a port from which to export their wool. Renamed ''Kings-town upon Hull'' in 1299, Hull had been a market town, military supply port, trading centre, fishing and whaling centre and industrial metropolis. Hull was an early theatre of battle in the First English Civil War, English Civil Wars. Its 18th-century Member of Parliament, William Wilberforce, took a prominent part in the abolition of the slave trade in Britain. More than 95% of the city was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Convex Hull
In geometry, the convex hull or convex envelope or convex closure of a shape is the smallest convex set that contains it. The convex hull may be defined either as the intersection of all convex sets containing a given subset of a Euclidean space, or equivalently as the set of all convex combinations of points in the subset. For a bounded subset of the plane, the convex hull may be visualized as the shape enclosed by a rubber band stretched around the subset. Convex hulls of open sets are open, and convex hulls of compact sets are compact. Every compact convex set is the convex hull of its extreme points. The convex hull operator is an example of a closure operator, and every antimatroid can be represented by applying this closure operator to finite sets of points. The algorithmic problems of finding the convex hull of a finite set of points in the plane or other low-dimensional Euclidean spaces, and its dual problem of intersecting half-spaces, are fundamental problems ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hull (watercraft)
A hull is the watertight body of a ship, boat, or flying boat. The hull may open at the top (such as a dinghy), or it may be fully or partially covered with a deck. Atop the deck may be a deckhouse and other superstructures, such as a funnel, derrick, or mast. The line where the hull meets the water surface is called the waterline. General features There is a wide variety of hull types that are chosen for suitability for different usages, the hull shape being dependent upon the needs of the design. Shapes range from a nearly perfect box in the case of scow barges to a needle-sharp surface of revolution in the case of a racing multihull sailboat. The shape is chosen to strike a balance between cost, hydrostatic considerations (accommodation, load carrying, and stability), hydrodynamics (speed, power requirements, and motion and behavior in a seaway) and special considerations for the ship's role, such as the rounded bow of an icebreaker or the flat bottom of a landing craft. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Port Of Hull
The Port of Hull is a port at the confluence of the River Hull and the Humber Estuary in Kingston upon Hull, in the East Riding of Yorkshire, England. Seaborne trade at the port can be traced to at least the 13th century, originally conducted mainly at the outfall of the River Hull, known as The Haven, or later as the Old Harbour. In 1773, the Hull Dock Company was formed and Hull's first dock built on land formerly occupied by Hull town walls. In the next half century a ring of docks was built around the Old Town on the site of the former fortifications, known as the Town Docks. The first was The Dock (1778), (or The Old Dock, known as Queen's Dock after 1855), followed by Humber Dock (1809) and Junction Dock (1829). An extension, Railway Dock (1846), was opened to serve the newly built Hull and Selby Railway. The first dock east of the river, Victoria Dock, opened in 1850. Docks along the banks of the Humber to the west were begun in 1862 with the construction of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine Hull
A submarine hull has two major components, the ''light hull'' and the ''pressure hull''. The light hull (''casing'' in British usage) of a submarine is the outer non-watertight hull which provides a hydrodynamically efficient shape. The pressure hull is the inner hull of a submarine that maintains structural integrity with the difference between outside and inside pressure at depth. Shapes Modern submarines are usually cigar-shaped. This design, already visible on very early submarines, is called a " teardrop hull". It is structurally efficient for withstanding external pressure, and significantly reduces the hydrodynamic drag on the sub when submerged, but decreases the sea-keeping capabilities and increases drag while surfaced. History The concept of an outer hydrodynamically streamlined light hull separated from the inner pressure hull was first introduced in the early pioneering submarine Ictineo I designed by the Spanish inventor Narcís Monturiol in 1859. However, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Hull
, mottoeng = Bearing the Torch f learning, established = 1927 – University College Hull1954 – university status , type = Public , endowment = £18.8 million (2016) , budget = £190 million (2016) , chancellor = Baroness Bottomley of Nettlestone , vice_chancellor = David Petley , head_label = Visitor , head = The Lord President of the Council ''ex officio'' , students = () , undergrad = () , postgrad = () , doctoral = , city = Kingston upon Hull , country = England , campus = Urban area , colours = Scarf colours, blue and gold Academic silk colour turquoise blue , nickname = , mascot = , website www.hull.ac.uk, logo = University of Hull logo.svg , logo_size = 200px , footnotes = , academic_staff = 1,005 (2020) , total_staff = 2,190 (2020) , affiliations = Global U8 (GU8) Utr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Injective Hull
In mathematics, particularly in algebra, the injective hull (or injective envelope) of a module is both the smallest injective module containing it and the largest essential extension of it. Injective hulls were first described in . Definition A module ''E'' is called the injective hull of a module ''M'', if ''E'' is an essential extension of ''M'', and ''E'' is injective. Here, the base ring is a ring with unity, though possibly non-commutative. Examples * An injective module is its own injective hull. * The injective hull of an integral domain is its field of fractions . * The injective hull of a cyclic ''p''-group (as Z-module) is a Prüfer group . * The injective hull of ''R''/rad(''R'') is Hom''k''(''R'',''k''), where ''R'' is a finite-dimensional ''k''-algebra with Jacobson radical rad(''R'') . * A simple module is necessarily the socle of its injective hull. * The injective hull of the residue field of a discrete valuation ring (R,\mathfrak,k) where \mathfrak = x\cdot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hull Kingston Rovers
Hull Kingston Rovers are a professional rugby league club based in Kingston upon Hull, Yorkshire, England, that competes in the Super League, the top tier of British rugby league. The club has won five league championships, and one Challenge Cup. Formed in 1882, the club joined the Northern Rugby Football Union in 1897. Hull Kingston Rovers most successful period was during the late 1970s and early 1980s, with Roger Millward leading the club to three league titles between 1978 and 1985, and the club's only Challenge Cup win in 1980. After a period of decline, the club competed in its first Super League season in 2007. Introduction Hull Kingston Rovers are one of two professional rugby league teams in Hull. Hull F.C. play on the west side of the city, and Hull KR on the east side, at Hull College Craven Park. The River Hull is the divide between the two. Hull KR's nickname, "The Robins", originates from their traditional playing colours of red and white. After a ten-ye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Hull
The River Hull is a navigable river in the East Riding of Yorkshire in Northern England. It rises from a series of springs to the west of Driffield, and enters the Humber Estuary at Kingston upon Hull. Following a period when the Archbishops of York charged tolls for its use, it became a free navigation. The upper reaches became part of the Driffield Navigation from 1770, after which they were again subject to tolls, and the section within the city of Hull came under the jurisdiction of the Port of Hull, with the same result. Most of its course is through low-lying land that is at or just above sea level, and regular flooding has been a long-standing problem along the waterway. Drainage schemes to alleviate it were constructed on both sides of the river. The Holderness Drainage scheme to the east was completed in 1772, with a second phase in 1805, and the Beverley and Barmston Drain to the west was completed in 1810. Since 1980, the mouth of the river has been protected by a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hull (botany)
Husk (or hull) in botany is the outer shell or coating of a seed. In the United States, the term husk often refers to the leafy outer covering of an ear of maize (corn) as it grows on the plant. Literally, a husk or hull includes the protective outer covering of a seed, fruit, or vegetable. It can also refer to the exuvia of insects or other small animals left behind after moulting. In cooking, hull can also refer to other waste parts of fruits and vegetables, notably the cap or sepal of a strawberry. The husk of a legume and some similar fruits is called a pod. Husking and dehulling Husking of corn is the process of removing its outer layers, leaving only the cob or seed rack of the corn. Dehulling is the process of removing the hulls (or chaff) from beans and other seeds. This is sometimes done using a machine known as a huller. To prepare the seeds to have oils extracted from them, they are cleaned to remove any foreign objects. Next, the seeds have their hulls, or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holomorphically Convex Hull
The theory of functions of several complex variables is the branch of mathematics dealing with complex-valued functions. The name of the field dealing with the properties of function of several complex variables is called several complex variables (and analytic space), that has become a common name for that whole field of study and Mathematics Subject Classification has, as a top-level heading. A function f:(z_1,z_2, \ldots, z_n) \rightarrow f(z_1,z_2, \ldots, z_n) is -tuples of complex numbers, classically studied on the complex coordinate space \Complex^n. As in complex analysis of functions of one variable, which is the case , the functions studied are '' holomorphic'' or ''complex analytic'' so that, locally, they are power series in the variables . Equivalently, they are locally uniform limits of polynomials; or locally square-integrable solutions to the -dimensional Cauchy–Riemann equations. For one complex variable, every domainThat is an open connected subset. (D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carathéodory's Theorem (convex Hull)
Carathéodory's theorem is a theorem in convex geometry. It states that if a point x lies in the convex hull \mathrm(P) of a set P\subset \R^d, then x can be written as the convex combination of at most d+1 points in P. More sharply, x can be written as the convex combination of at most d+1 ''extremal'' points in P, as non-extremal points can be removed from P without changing the membership of ''x'' in the convex hull. Its equivalent theorem for conical combinations states that if a point x lies in the conical hull \mathrm(P) of a set P\subset \R^d, then x can be written as the conical combination of at most d points in P. The similar theorems of Helly and Radon are closely related to Carathéodory's theorem: the latter theorem can be used to prove the former theorems and vice versa. The result is named for Constantin Carathéodory, who proved the theorem in 1911 for the case when P is compact. In 1914 Ernst Steinitz expanded Carathéodory's theorem for arbitrary set. Ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
