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Hull

Kingston upon Hull, commonly known as Hull, is a and port city in the , , located on the northern bank of the at its with the River Hull. Founded as Wyke on Hull in the late by the monks of Meaux Abbey, it was acquired by King Edward I in 1299 and renamed to serve as a royal port for military and trade purposes, establishing its enduring maritime identity. With a of approximately 267,014 as recorded in the 2021 census, Hull developed into a major center for fishing, whaling, and international trade by the 18th and 19th centuries, handling significant volumes of goods through its docks and contributing to Britain's industrial expansion. The city played pivotal roles in historical events, including sparking the in 1642 when royal forces attempted to seize its arsenal, and as the birthplace of , whose parliamentary efforts led to the abolition of the slave trade in 1807. In modern times, Hull has transitioned toward cultural and regenerative economies, earning designation as the in 2017 and featuring landmarks such as the —the world's longest single-span upon its 1981 opening—and The Deep, one of Europe's largest aquariums. Despite its historical prominence, the city has faced economic challenges post-deindustrialization, with higher-than-average deprivation indices reflecting shifts from to services and renewables.

Engineering Structures

Watercraft Hulls

The hull of a watercraft constitutes the watertight structural body that provides buoyancy, supports the vessel's weight including cargo and passengers, and withstands hydrostatic and hydrodynamic forces. It forms the primary interface with water, influencing resistance, stability, and propulsion efficiency through its shape and form. In engineering terms, the hull must resist static pressures from immersion and dynamic loads from waves, motion, and impacts while maintaining integrity to prevent flooding. Hull designs are categorized primarily by their interaction with water displacement and speed capabilities. Displacement hulls, the most fundamental type used in canoes, sailboats, and large ships, displace a volume of water equal to the vessel's weight per Archimedes' principle, enabling efficient low-speed travel but limiting top speeds to hull speed (approximately 1.34 times the square root of the waterline length in feet, in knots). These hulls typically feature rounded or V-shaped bottoms for smooth passage through waves, though they exhibit rolling motion in swells due to lower initial stability. Planing hulls, conversely, incorporate flatter or modified-V sections to generate lift at high speeds, allowing the vessel to rise partially out of the water and reduce drag, suited for powerboats exceeding 15-20 knots but less stable in rough conditions without ballast. Semi-displacement hulls blend traits of both, permitting speeds up to 1.5 times hull speed for applications like trawlers. Multi-hulled configurations, such as catamarans with twin parallel hulls or trimarans with a central hull and outriggers, enhance stability and reduce heeling by increasing beam and buoyancy distribution, though they demand precise weight centering to avoid capsizing risks. Materials for hull have evolved from natural s and timber to synthetics for and . Early hulls, dating to circa 4000 BCE in reed-bound vessels, transitioned to plank-on-frame wooden assemblies by Phoenician and eras, relying on mortise-and-tenon joints for watertightness. Modern hulls predominantly use for large commercial ships due to its high strength-to-weight ratio and weldability, enduring tensile stresses up to 400-500 ; aluminum alloys for lighter vessels like ferries, offering in saltwater; and fiber-reinforced polymers (e.g., with ) for recreational boats, which minimize weight (densities around 1.5-2.0 g/cm³) and electrolytic while providing impact absorption. Composite materials like carbon , with moduli exceeding 200 GPa, are increasingly applied in high-performance yachts for superior and , though higher costs limit widespread adoption. Design principles prioritize hydrodynamic efficiency, structural optimization, and operational context. Hull form coefficients, such as the block coefficient (volume of hull displaced divided by enclosing rectangular prism), typically range from 0.5-0.6 for efficient carriers to minimize wetted surface area and frictional , which constitutes 60-80% of total at low speeds. Deep-V hulls (dead rise angles of 20-25 degrees) excel in rough seas by slicing , reducing pounding, whereas flat-bottomed designs (near 0 degrees) prioritize shallow and in calm inland waters but amplify slamming forces. Finite element and now simulate load distributions, ensuring factors of safety above 1.5 against under combined bending and shear from wave-induced moments up to millions of Nm in ocean-going vessels. is quantified via (GM), ideally 0.5-1.0 m for initial upright recovery, with dynamic assessments accounting for effects from sloshing liquids.

Vehicle and Aircraft Hulls

In armored fighting vehicles, such as and , the hull constitutes the primary armored lower structure that integrates the , , crew stations, and often fixed armaments, while supporting a rotatable atop it. This design separates the hull's role in and base from the turret's for flexible , with the hull typically featuring sloped armor to enhance ballistic deflection based on principles of projectile kinematics and material yield strength. For example, the hull of the employs aluminum alloy armor augmented by reactive elements to balance weight against threat resistance. Modern hull designs in mine-resistant vehicles incorporate V-shaped or double-V underbellies to channel blast waves from improvised explosive devices outward and upward, reducing lethal and fragmentation into the crew compartment through geometric redirection of vectors. The U.S. Army's double-V hull variant, fielded since 2010, demonstrated this efficacy in operations by surviving over 1,000 IED encounters with minimal losses, attributing survivability to the hull's 20-30 degree vee angle optimizing energy dissipation. Hull materials often combine rolled homogeneous , composites, or ceramics, with thicknesses varying from 20-100 equivalent depending on threat levels, prioritizing causal factors like absorption over uniform mass distribution. In aircraft engineering, the term hull applies principally to specialized types like flying boats and rigid airships, where it denotes the main buoyant or enclosing structure analogous to a hull but adapted for aerodynamic and hydrodynamic loads. For flying boats, the hull functions as an integrated fuselage-float , featuring a deep-V or stepped planing bottom to generate hydrodynamic during water takeoffs and minimize via spray suppression, with beam-to-length ratios typically 1:10 to 1:12 for stability in waves up to 1-2 meters. The flying boat, operational from 1918, utilized a V-bottom hull clad in planking over frames, enabling loads of 2,000 pounds at speeds of 80 mph on water surfaces. Design constraints emphasize planing efficiency, with steps positioned at 70-80% of hull length to break and transition to flight, as validated in NACA tests showing 15-20% reduction post-step. Rigid airship hulls comprise a framework of girders and rings sheathed in fabric or metal, distributing gas pressure loads while resisting under differential and aerodynamic . The LZ 129 Hindenburg's hull, completed in 1936, consisted of 15 main rings spaced 18 meters apart, interconnected by 36 longitudinal girders forming triangular cells for containment, yielding a rigid volume of 200,000 cubic meters capable of 135 km/h cruise with 10-ton . Structural integrity relies on axial tension-compression balance, with wire bracing preventing torsion, though historical incidents like the 1937 fire highlighted vulnerabilities to static discharge in hydrogen-filled designs. Contemporary non-rigid airships forgo rigid hulls, using pressurized envelopes for shape, but rigid concepts persist in proposals for enhanced fractions up to 20% of gross .

Botanical Structures

Seed and Fruit Hulls

In , a hull refers to the outer protective covering enclosing certain or , typically consisting of dry, fibrous, or leathery tissue derived from the pericarp or bracts. This structure is distinct from the inner seed coat or hard , serving primarily as a barrier against mechanical damage, , and pathogens during seed maturation and dispersal. Hulls are commonly found in monocotyledonous grains and certain drupaceous , where they facilitate dehiscence or processing for human use. For seeds, hulls often comprise the fused palea and in grasses ( family), forming a persistent around the , as seen in () and ( vulgare), where the hull accounts for 20-30% of the grain's weight and is composed mainly of and with low protein content (around 4%). These hulls protect the from environmental stresses, such as moisture loss and predation, enabling viability during storage and . In sunflower seeds (Helianthus annuus), the hull is a thin, black pericarp layer that shields the but can inhibit if not removed, as it contains allelopathic compounds that suppress nearby plant growth. In fruits, hulls typically form the exocarp and mesocarp layers of the pericarp, providing a fleshy or fibrous outer , as in pistachios (Pistacia vera), where the hull splits open at maturity to expose the endocarp shell enclosing the . Almond fruits (Prunus dulcis), botanically drupes, feature a hull comprising the exocarp and mesocarp that dries and splits to release the , which contains the true ; this hull is routinely removed post-harvest to prevent and facilitate processing. Hulls in such fruits enhance dispersal by attracting animals or aiding wind release while protecting developing seeds from and microbial until . Unlike softer tissues, these hulls are often inedible and mechanically tough, reflecting adaptations for in arid or competitive environments.

Mathematical Concepts

Convex Hull

The convex hull of a finite set S of points in n-dimensional Euclidean space is defined as the intersection of all convex sets containing S, equivalently the smallest convex set enclosing S. This set consists of all convex combinations of points in S, where a convex combination is a linear combination with non-negative coefficients summing to 1. In two dimensions, the convex hull forms a convex polygon whose vertices are a subset of S, specifically the extreme points not lying in the interior of any line segment connecting other points in S. Key properties include convexity by construction, compactness for finite S, and the fact that its boundary in \mathbb{R}^d is determined by at most d+1 affinely independent points via Carathéodory's theorem, which states that any point in the of S lies in the of at most d+1 points from S. The is uniquely determined and invariant under affine transformations. For example, in \mathbb{R}^2, if S has three non-collinear points, the hull is the they form; collinear points yield a . Computing the is central to , with optimal algorithms achieving O(n \log n) time for n points in the plane under the real model, matching the lower bound from reductions. , introduced in 1972, sorts points by polar angle around a lowest-point and builds the hull via a stack-based sweep, eliminating non-extreme points. Other methods include Jarvis's march (gift wrapping), which runs in O(n h) time where h is the number of hull vertices, suitable for small h, and divide-and-conquer approaches like Chan's algorithm combining gifts wrapping and for O(n \log h) performance. In mathematics, convex hulls underpin , where they characterize feasible regions in ; for instance, the feasible set of a is the convex hull of its vertices. They appear in approximation theory for bounding sets and in separation theorems, such as , which relies on hull properties for certifying infeasibility. Applications extend to , where the hull models minimal enclosures for random point sets, and in duality theory, linking hulls to support functions via the Legendre transform.

Other Mathematical Hulls

In , generalizations of the convex hull address limitations in representing non-convex point sets, such as those with indentations or holes. The alpha hull (or ) is a parameterized family of shapes that interpolate between the original point set and its , controlled by a parameter α ≥ 0. For α approaching infinity, the alpha hull coincides with the ; as α decreases toward zero, it more closely approximates the discrete point set, potentially including concavities and excluding extraneous regions. This construction relies on the of the points, where edges longer than 2√α are removed to form the boundary. Alpha hulls were formalized in the context of shape recovery from scattered data, enabling tighter enclosures than for irregular distributions. The hull, also known as the α-concave hull for specific parameterizations, extends the by permitting inward dents while still forming a simple polygon enclosing the points. Unlike the , which over-approximates regions, the concave hull minimizes area or perimeter subject to non-convexity constraints, often computed via algorithms that iteratively add edges or use k-nearest neighbors to detect features. For instance, one approach constructs the hull by starting with the and recursively "pushing in" vertices to fit concavities, ensuring no self-intersections. This concept proves useful in applications like geographic delineation, where s fail to capture fjords or urban outlines. Empirical comparisons show concave hulls achieve up to 20-50% smaller areas than s for datasets with high , depending on point density. Other variants include order-k hulls, which generalize to the smallest enclosure containing at least k points from the set, useful for robust outlier detection in multimodal data. The order-k alpha hull combines these ideas, adapting alpha shapes to prioritize denser clusters. These structures maintain closure under intersection and are computable in O(n log n) time for fixed k in the plane, analogous to convex hull algorithms like Graham scan. In higher dimensions, such hulls extend to polyhedra with non-convex faces, though computational complexity increases.

Geographical Locations

United Kingdom

Kingston upon Hull, commonly referred to as Hull, is a port city and in the ceremonial county of the , , situated on the north bank of the estuary approximately 150 miles (240 km) north of . The city covers an area of 71.3 square kilometres (27.5 sq mi) and serves as a major gateway for trade between the UK and via the , which handles over 10 million tonnes of cargo annually. Historically, Hull emerged as a key medieval trading hub, with its development tied to the export of and cloth from the onward, establishing it as one of 's principal east coast ports. The city's origins trace to the late , when the site along the River Hull was utilized by monks from nearby Meaux Abbey for a trading , but it was formally established as a royal borough in 1299 by King Edward I, who renamed it to emphasize its strategic military and commercial role, including provisioning royal fleets. By the , Hull had become England's leading export port, later expanding into fishing, whaling, and shipbuilding, which fueled industrial growth through the 19th and early 20th centuries. The port's dock system, initiated with the Old Dock in 1778 as Britain's first statutory dock, underscored its engineering innovations, though heavy bombing during destroyed much of the historic core, leading to postwar reconstruction focused on functionality over preservation. As of mid-2023, Hull's resident population stood at 271,942, reflecting a 5.0% increase from 2013 amid modest urban growth driven by migration and natural change, though the city faces challenges from an aging demographic and lower life expectancy of 77.5 years compared to the national average. The 2021 census indicated a predominantly White population (91.8%), with Asian (2.8%) and Black (1.9%) minorities, and a high proportion of economically inactive residents aged 16-64 (around 24% in recent estimates), linked to structural shifts from traditional industries. Employment rates for this age group reached 73.2% in 2023, up from prior years, but claimant count unemployment hovered at about 10,620 in March 2024, exceeding regional norms due to deindustrialization's legacy. Economically, Hull has transitioned from fishing and manufacturing dominance—once employing tens of thousands in trawler fleets—to a mixed base including , renewables, and chemicals, with still accounting for 16.6% of jobs (21,500 positions in 2023) and growing sectors like electricity and gas supply expanding by 25% recently. The remains central, facilitating roll-on/roll-off ferry services to the and , while the initiative since 2021 aims to attract investment in green energy and advanced , though productivity lags national averages due to skill gaps and infrastructure constraints. The city council, as a , oversees local governance, with devolved powers under the Hull and East Yorkshire Combined Authority formed in to coordinate economic strategy amid national efforts to boost regional growth.

Canada

Hull is the central business district and oldest neighbourhood of Gatineau, Quebec, Canada, situated on the north shore of the Ottawa River directly across from Ottawa, Ontario, forming a key part of Canada's National Capital Region. The settlement originated in 1800 when American entrepreneur Philemon Wright led approximately 38 colonists from Woburn, Massachusetts, to the undeveloped Hull Township, establishing Wright's Town as an intended agricultural outpost that rapidly transitioned to lumber extraction amid abundant regional forests. Wright's enterprise marked the first permanent European settlement in the Ottawa Valley, with his group constructing the initial bridge over the Gatineau River and initiating timber rafting operations, including the pioneering 1806 descent of squared timber rafts to Quebec City via the Ottawa River. Industrial growth accelerated in the , leveraging the of Chaudière Falls for sawmills, mills, and production, which attracted French-Canadian laborers and established Hull as a timber nexus supplying British markets. The community, initially dominated by English-speaking settlers, saw a surge in Francophone residents; by , French-speakers comprised over 90% of the population due to mill employment. Wright's Town was formally incorporated as the City of Hull on , 1875, separating from Hull Township to form an independent . A catastrophic fire erupted on April 26, 1900, originating from a spark amid high winds and dry conditions, rapidly engulfing wooden structures and yards; it destroyed about two-thirds of Hull, including over 7,000 buildings, mills, and churches, displacing 14,000-15,000 residents and causing an estimated $300,000 in damages (equivalent to millions today). Embers carried across the ignited fires in Ottawa's , exacerbating regional losses but highlighting Hull's vulnerability to conflagrations fueled by its industrial layout. Reconstruction followed, bolstering , though the city later contended with economic shifts as traditional industries waned post-World War II. Under Quebec's 2000 municipal reform law aiming to consolidate finances and services, Hull merged with the adjacent cities of Aylmer, , , and Masson-Angers on January 1, 2002, creating the expanded City of with a unified administration at Maison du Citoyen. Pre-amalgamation, Hull's population stood at 66,246 in the 2001 , contributing to Gatineau's total of over 240,000; the Hull sector retains cultural significance, hosting federal landmarks like the Canadian Museum of History (opened 1989 as Musée canadien des civilisations) and serving as a bilingual hub for and proximate to Ottawa's government core.

United States

Hull, Massachusetts, is a coastal town in Plymouth County situated on a extending into the southern portion of . First settled in 1622 by an expedition led by of the , the area was initially known as Nantasket before its incorporation as Hull in 1644, named in honor of the English seaport . Early European activity focused on fishing, farming, and maritime trade, with the town's strategic harbor position facilitating connections to . By the , Hull developed as a resort destination, bolstered by steamboat services from starting in 1818. Today, it remains one of ' oldest settlements, emphasizing its beaches, historical sites, and proximity to while facing challenges from and rising sea levels due to its low-lying geography. The town spans approximately 2.6 square miles of land, making it the smallest municipality in Plymouth County by area, with terrain featuring hills such as Allerton Hill and Atlantic Hill rising modestly above . Hull's historically relied on processing and , with serving as a key attraction since the late ; the site hosted an from 1873 to 1927. Modern governance operates under a form, with services including public schools and a preserving local records from the colonial era. Several smaller communities named Hull exist elsewhere in the United States, including cities, villages, and hamlets in , , , , , , , , , and . Among these, Hull, , in County, represents a rural municipality focused on community amenities such as parks and recreational facilities. Hull, , in County, is a minor incorporated city with roots in . These locations generally lack the historical prominence or population scale of their counterpart, often serving as unincorporated or sparsely populated areas tied to local farming or small-scale industry.

Other Places

Hull Heads is a small coastal locality in the Cassowary Coast Region of , . In the , the area recorded a of approximately 130 residents, predominantly older adults with a median age of 63. The settlement features public amenities including a boat ramp managed by the Cassowary Coast Regional Council, supporting local and access to nearby coastal waters. Hull Heads lies adjacent to the Hull River, which flows into the Coral Sea, and is part of a prone to tropical cyclones and storm tides, as documented in coastal observation reports from 1979 to 1988. Among other minor features, Hull Island forms part of the Northumberland Islands chain off central Queensland's coast, within a area unmanaged for habitation. These locations represent limited instances of the name "Hull" beyond and the , typically tied to historical or exploratory naming conventions rather than significant urban development.

People

Political and Diplomatic Figures

Cordell Hull (October 2, 1871 – July 23, 1955) served as the from March 4, 1933, to November 20, 1944, under President , marking the longest tenure in that office to date. Born in a in , Hull earlier represented his state in the U.S. from 1907 to 1921 and 1923 to 1931, and in the from 1931 to 1933. His diplomatic efforts focused on reciprocal trade agreements to combat the and laid foundational work for postwar international organization, earning him the in 1945 for contributions to the Charter, despite health issues that forced his resignation amid wartime demands. Hull's policies emphasized and , negotiating over two dozen trade pacts that reduced tariffs and boosted U.S. exports by 60% between 1933 and 1940, though critics noted initial isolationist leanings that delayed decisive action against aggression until . His role in the 1944 helped shape the UN's structure, prioritizing over unilateralism. Other figures include (1753–1825), a veteran who governed the from 1805 to 1812 and briefly commanded U.S. forces during the , surrendering in August 1812 amid supply shortages and strategic miscalculations. In diplomacy, Edmund J. Hull served as U.S. Ambassador to from 2001 to 2004, managing relations during post-9/11 counterterrorism efforts, and Thomas Neil Hull as Ambassador to from 2004, focusing on post-civil war stabilization. These latter roles, while significant in their contexts, lack the global impact of Cordell's tenure.

Sports Figures

Ebenezer Cobb Morley (1831–1923), born in Kingston upon Hull, founded the Football Association on 26 October 1863 and drafted its first set of standardized rules, earning recognition as the principal founder of the modern game of association football. Karen Briggs (born 11 April 1963 in Kingston upon Hull), a judoka competing in the under-48 kg division, secured world championships in 1982, 1984, 1986, and 1989, along with European titles from 1982 to 1984 and 1987 to 1990; she also represented Great Britain at the 1992 Barcelona Olympics, where judo debuted for women. Nick Barmby (born 11 February 1974 in ), a , made 23 appearances for the national team between 1994 and 2002 and played professionally for clubs including (where he won the in 1995 and Cup in 2001), , Leeds United, and Hull City, for which he later managed from 2012 to 2013. Tommy Coyle (born 2 September 1989 in ), a boxer who turned professional in 2009, captured the Commonwealth title in 2018 after defeating by unanimous decision on 17 June and amassed a record of 27 wins (12 by knockout), 5 losses, and 1 draw before retiring in 2019. Dean Windass (born 5 April 1969 in Gipsyville, Hull), a forward known for his physicality, scored the winning goal in Hull City's 2008 Championship play-off final victory over Bristol City on 24 May, securing promotion to the ; he played over 700 career matches across clubs including Hull City, Bradford City, and .

Other Notable Individuals

Clark Leonard Hull (May 24, 1884 – May 10, 1952) was an renowned for formulating a hypothetico-deductive theory of learning based on drive and strength, positing that arises from biological needs creating drives that reinforce formation through . His 1943 book Principles of Behavior systematized these ideas mathematically, influencing until cognitive approaches supplanted it in the . Alan Hull (February 20, 1945 – November 17, 1995) was an English and founder of the band , whose 1971 album topped charts with hits like "Meet Me on the Ledge" and "Clear White Light." He released solo albums including Puppets (1978), blending introspective lyrics with influences, and performed until his death from a heart attack. Rod Hull (August 13, 1935 – March 17, 1999) was a and famous for his act, a , aggressive that "attacked" celebrities on shows like The Smirnoff (1970s) and Emu's Pink Windmill Show (1980s). His , involving Emu's pecking and destruction, drew millions of viewers, though Hull expressed private frustration with the character's dominance. Henry Hull (October 3, 1890 – March 8, 1977) was an American stage and film actor who originated the role of Jeeter Lester in the Broadway production of Tobacco Road (1933), playing over 3,000 performances, and starred as the lead in Universal's Werewolf of London (1935), an early horror film. His career spanned over 100 films, including Boys Town (1938) and High Sierra (1941), often in character roles.

Other Uses

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