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Ogee
An ogee ( ) is an object, element, or curve—often seen in architecture and building trades—that has a serpentine- or extended S-shape (Sigmoid curve, sigmoid). Ogees consist of a "double curve", the combination of two semicircle, semicircular curves or arc (geometry), arcs that, as a result of a inflection point, point of inflection from concave function, concave to convex function, convex or ''vice versa'', have ends of the overall curve that point in opposite directions (and have tangents that are approximately parallel). First seen in textiles in the 12th century, the use of ogee elements—in particular, in the design of arches—has been said to characterise various Gothic architecture, Gothic and Gothic Revival architecture, Gothic Revival architectural styles. The shape has many such uses in architecture from those periods to the present day, including in the ogee arch in these architectural styles, where two ogees oriented as mirror images compose the sides of the ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arch
An arch is a curved vertical structure spanning an open space underneath it. Arches may support the load above them, or they may perform a purely decorative role. As a decorative element, the arch dates back to the 4th millennium BC, but structural load-bearing arches became popular only after their adoption by the Ancient Romans in the 4th century BC. Arch-like structures can be horizontal, like an arch dam that withstands the horizontal hydrostatic pressure load. Arches are usually used as supports for many types of vaults, with the barrel vault in particular being a continuous arch. Extensive use of arches and vaults characterizes an arcuated construction, as opposed to the trabeated system, where, like in the architectures of ancient Greece, China, and Japan (as well as the modern steel-framed technique), posts and beams dominate. Arches had several advantages over the lintel, especially in the masonry construction: with the same amount of material it can have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venetian Gothic Architecture
Venetian Gothic is the particular form of Italian Gothic architecture typical of Venice, originating in local building requirements, with some influence from Byzantine architecture, and some from Islamic architecture, reflecting Venice's trading network. Very unusually for medieval architecture, the style is at its most characteristic in secular buildings, with the great majority of surviving examples of the style being secular. The best-known examples are the Doge's Palace, Venice, Doge's Palace and the Ca' d'Oro. Both feature loggias of closely spaced small columns, with heavy tracery with quatrefoil openings above, decoration along the roofline, and some coloured patterning to plain wall surfaces. Together with the ogee arch, capped with a relief ornament, and ropework reliefs, these are the most iconic characteristics of the style. Ecclesiastical Gothic architecture tended to be less distinctively Venetian, and closer to that in the rest of Italy. The beginning of the st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gothic Architecture
Gothic architecture is an architectural style that was prevalent in Europe from the late 12th to the 16th century, during the High Middle Ages, High and Late Middle Ages, surviving into the 17th and 18th centuries in some areas. It evolved from Romanesque architecture and was succeeded by Renaissance architecture. It originated in the Île-de-France and Picardy regions of northern France. The style at the time was sometimes known as ''opus Francigenum'' (); the term ''Gothic'' was first applied contemptuously during the later Renaissance, by those ambitious to revive the Classical architecture, architecture of classical antiquity. The defining design element of Gothic architecture is the Pointed arch (architecture), pointed arch. The use of the pointed arch in turn led to the development of the pointed rib vault and flying buttresses, combined with elaborate tracery and stained glass windows. At the Abbey of Basilica of Saint-Denis, Saint-Denis, near Paris, the choir was rec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyma Recta
Moulding (British English), or molding (American English), also coving (in United Kingdom, Australia), is a strip of material with various profiles used to cover transitions between surfaces or for decoration. It is traditionally made from solid milled wood or plaster, but may be of plastic or reformed wood. In classical architecture and sculpture, the moulding is often carved in marble or other stones. In historic architecture, and some expensive modern buildings, it may be formed in place with plaster. A "plain" moulding has right-angled upper and lower edges. A "sprung" moulding has upper and lower edges that bevel towards its rear, allowing mounting between two non-parallel planes (such as a wall and a ceiling), with an open space behind. Mouldings may be decorated with paterae as long, uninterrupted elements may be boring for eyes. Types Decorative mouldings have been made of wood, stone and cement. Recently mouldings have been made of extruded polyvinyl chloride (PV ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kilfane Church, 13th Century Door Thomastown, Co
Kilfane () is a combination of two townlands located outside of Thomastown in County Kilkenny, Ireland. It is made up of the townlands of Kilfane East and West with a total area of . Located in the barony of Gowran, Kilfane gives its name to the wider civil parish which contains 16 townlands. It is in the Roman Catholic parish of Tullaherin. This is also the site of the 13th-century Kilfane Church, now in ruins, which has an adjoining castellated presbytery or stone house. The site has traces of original consecration crosses, ogee headed doorways, remains of an altar, sedilia and book rest. Inside the ruined church, on the North wall, is an effigy of a Norman knight in full armour. It is referred to as and this effigy is the tallest of its kind in Britain or Ireland. Kilfane House was the seat of the Power family who were responsible for the creation of Kilfane Glen and Waterfall which is now a tourist attraction containing a romantic era (Romanticism) garden and wate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
English Gothic Architecture
English Gothic is an architectural style that flourished from the late 12th until the mid-17th century. The style was most prominently used in the construction of Gothic cathedrals and churches, cathedrals and churches. Gothic architecture, Gothic architecture's defining features are Pointed arch (architecture), pointed arches, rib vaults, buttresses, and extensive use of stained glass. Combined, these features allowed the creation of buildings of unprecedented height and grandeur, filled with light from large stained glass windows. Important examples include Westminster Abbey, Canterbury Cathedral and Salisbury Cathedral. The Gothic style endured in England much longer than in Continental Europe. The Gothic style was introduced from France, where the various elements had first been used together within a single building at the choir (architecture), choir of the Abbey of Saint-Denis north of Paris, completed in 1144. The earliest large-scale applications of Gothic architecture i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ionic Order
The Ionic order is one of the three canonic classical order, orders of classical architecture, the other two being the Doric order, Doric and the Corinthian order, Corinthian. There are two lesser orders: the Tuscan order, Tuscan (a plainer Doric), and the rich variant of Corinthian called the composite order. Of the three classical canonic orders, the Corinthian order has the narrowest columns, followed by the Ionic order, with the Doric order having the widest columns. The Ionic capital is characterized by the use of volutes. Ionic columns normally stand on a base which separates the shaft of the column from the stylobate or platform while the cap is usually enriched with egg-and-dart. The ancient architect and architectural historian Vitruvius associates the Ionic with feminine proportions (the Doric representing the masculine). Description Capital The major features of the Ionic order are the volutes of its capital (architecture), capital, which have been the subject of mu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sigmoid Curve
A sigmoid function is any mathematical function whose graph has a characteristic S-shaped or sigmoid curve. A common example of a sigmoid function is the logistic function, which is defined by the formula :\sigma(x) = \frac = \frac = 1 - \sigma(-x). Other sigmoid functions are given in the Examples section. In some fields, most notably in the context of artificial neural networks, the term "sigmoid function" is used as a synonym for "logistic function". Special cases of the sigmoid function include the Gompertz curve (used in modeling systems that saturate at large values of ''x'') and the ogee curve (used in the spillway of some dams). Sigmoid functions have domain of all real numbers, with return (response) value commonly monotonically increasing but could be decreasing. Sigmoid functions most often show a return value (''y'' axis) in the range 0 to 1. Another commonly used range is from −1 to 1. A wide variety of sigmoid functions including the logistic and hy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
