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Asymmetries
Asymmetry is the absence of, or a violation of, symmetry (the property of an object being invariant to a transformation, such as reflection). Symmetry is an important property of both physical and abstract systems and it may be displayed in precise terms or in more aesthetic terms. The absence of or violation of symmetry that are either expected or desired can have important consequences for a system. In organisms Due to how cells divide in organisms, asymmetry in organisms is fairly usual in at least one dimension, with biological symmetry also being common in at least one dimension. Louis Pasteur proposed that biological molecules are asymmetric because the cosmic .e. physicalforces that preside over their formation are themselves asymmetric. While at his time, and even now, the symmetry of physical processes are highlighted, it is known that there are fundamental physical asymmetries, starting with time. Asymmetry in biology Asymmetry is an important and widespread ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Facial Symmetry
Facial symmetry is one specific measure of bodily symmetry. Along with traits such as averageness and youthfulness it influences judgments of aesthetic traits of physical attractiveness and beauty. For instance, in mate selection, people have been shown to have a preference for symmetry. Facial bilateral symmetry is typically defined as fluctuating asymmetry of the face comparing random differences in facial features of the two sides of the face. The human face also has systematic, directional asymmetry: on average, the face (mouth, nose and eyes) sits systematically to the left with respect to the axis through the ears, the so-called ''aurofacial asymmetry''. Directional asymmetry Directional asymmetry is a systematic asymmetry of some parts of the face across the population. A theory of directional asymmetries in the human body is the axial twist hypothesis. As predicted by this theory, the eyes, nose and mouth are, on average, located slightly to the left of the axis throug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Handedness
In human biology, handedness is an individual's preferential use of one hand, known as the dominant hand, due to it being stronger, faster or more dextrous. The other hand, comparatively often the weaker, less dextrous or simply less subjectively preferred, is called the non-dominant hand. In a study from 1975 on 7688 children in US grades 1-6, Left handers comprised 9.6% of the sample, with 10.5% of male children and 8.7% of female children being left-handed. Handedness is often defined by one's writing hand, as it is fairly common for people to prefer to do some tasks with each hand. There are examples of true ambidexterity (equal preference of either hand), but it is rare—most people prefer using one hand for most purposes. Most of the current research suggests that left-handedness has an epigenetic marker—a combination of genetics, biology and the environment. Because the vast majority of the population is right-handed, many devices are designed for use by right-h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Symmetry (biology)
Symmetry in biology refers to the symmetry observed in organisms, including plants, animals, fungi, and bacteria. External symmetry can be easily seen by just looking at an organism. For example, take the face of a human being which has a plane of symmetry down its centre, or a pine cone with a clear symmetrical spiral pattern. Internal features can also show symmetry, for example the tubes in the human body (responsible for transporting gases, nutrients, and waste products) which are cylindrical and have several planes of symmetry. Biological symmetry can be thought of as a balanced distribution of duplicate body parts or shapes within the body of an organism. Importantly, unlike in mathematics, symmetry in biology is always approximate. For example, plant leaves – while considered symmetrical – rarely match up exactly when folded in half. Symmetry is one class of patterns in nature whereby there is near-repetition of the pattern element, either by reflection or rota ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heart
The heart is a muscular organ found in most animals. This organ pumps blood through the blood vessels of the circulatory system. The pumped blood carries oxygen and nutrients to the body, while carrying metabolic waste such as carbon dioxide to the lungs. In humans, the heart is approximately the size of a closed fist and is located between the lungs, in the middle compartment of the chest, called the mediastinum. In humans, other mammals, and birds, the heart is divided into four chambers: upper left and right atria and lower left and right ventricles. Commonly, the right atrium and ventricle are referred together as the right heart and their left counterparts as the left heart. Fish, in contrast, have two chambers, an atrium and a ventricle, while most reptiles have three chambers. In a healthy heart, blood flows one way through the heart due to heart valves, which prevent backflow. The heart is enclosed in a protective sac, the pericardium, which also contains ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Left-right Asymmetry (biology)
Left-right asymmetry, (LR asymmetry) is the process in early embryonic development that breaks the normal symmetry in the bilateral embryo. In vertebrates, left-right asymmetry is established early in development at a structure called the left-right organizer (the name of which varies between species) and leads to activation of different signalling pathways on the left and right of the embryo. This in turn cause several organs in adults to develop LR asymmetry, such as the tilt of the heart, the different number lung lobes on each side of the body and the position of the stomach and spleen on the right side of the body. If this process does not occur correctly in humans it can result in the syndromes heterotaxy or situs inversus. LR asymmetry is pervasive throughout all animals, including invertebrates. Examples of invertebrate LR asymmetry include the large and small claws of the fiddler crab, asymmetrical gut coiling in ''Drosophila melanogaster,'' and dextral (clockwise) and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Auditorio De Tenerife
The Auditorio de Tenerife "Adán Martín" (commonly referred to as the Auditorio de Tenerife) is an auditorium in Santa Cruz de Tenerife, Canary Islands, Spain. Designed by architect Santiago Calatrava, it is located on the Avenue of the Constitution in the Canarian capital, and next to the Atlantic Ocean in the southern part of Port of Santa Cruz de Tenerife. Construction began in 1997 and was completed in 2003. The auditorium was inaugurated on 26 September of that year in the presence of Felipe, Prince of Asturias, and was later visited by former U.S. President Bill Clinton. The building is framed within the tenets of late-modern architecture of the late 20th century. The majestic profile of the auditorium has become an architectural symbol of the city of Santa Cruz de Tenerife, the island of Tenerife and the Canary Islands. It is also regarded as the finest contemporary building in the Canary Islands and one of the most emblematic buildings of Spanish architecture. In Mar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Modern Architecture
Modern architecture, or modernist architecture, was an architectural movement or architectural style based upon new and innovative technologies of construction, particularly the use of glass, steel, and reinforced concrete; the idea that form should follow function ( functionalism); an embrace of minimalism; and a rejection of ornament. It emerged in the first half of the 20th century and became dominant after World War II until the 1980s, when it was gradually replaced as the principal style for institutional and corporate buildings by postmodern architecture. Origins File:Crystal Palace.PNG, The Crystal Palace (1851) was one of the first buildings to have cast plate glass windows supported by a cast-iron frame File:Maison François Coignet 2.jpg, The first house built of reinforced concrete, designed by François Coignet (1853) in Saint-Denis near Paris File:Home Insurance Building.JPG, The Home Insurance Building in Chicago, by William Le Baron Jenney (1884) Fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Postmodernism
Postmodernism is an intellectual stance or mode of discourseNuyen, A.T., 1992. The Role of Rhetorical Devices in Postmodernist Discourse. Philosophy & Rhetoric, pp.183–194. characterized by skepticism toward the "grand narratives" of modernism, opposition to epistemic certainty or stability of meaning, and emphasis on ideology as a means of maintaining political power. Claims to objective fact are dismissed as naïve realism, with attention drawn to the conditional nature of knowledge claims within particular historical, political, and cultural discourses. The postmodern outlook is characterized by self-referentiality, epistemological relativism, moral relativism, pluralism, irony, irreverence, and eclecticism; it rejects the "universal validity" of binary oppositions, stable identity, hierarchy, and categorization. Initially emerging from a mode of literary criticism, postmodernism developed in the mid-twentieth century as a rejection of modernism and has been observ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Span Replacement Of The San Francisco – Oakland Bay Bridge
Eastern may refer to: Transportation *China Eastern Airlines, a current Chinese airline based in Shanghai * Eastern Air, former name of Zambia Skyways *Eastern Air Lines, a defunct American airline that operated from 1926 to 1991 * Eastern Air Lines (2015), an American airline that began operations in 2015 * Eastern Airlines, LLC, previously Dynamic International Airways, a U.S. airline founded in 2010 * Eastern Airways, an English/British regional airline *Eastern Provincial Airways, a defunct Canadian airline that operated from 1949 to 1986 *Eastern Railway (other), various railroads *Eastern Avenue (other), various roads * Eastern Parkway (other), various parkways *Eastern Freeway, Melbourne, Australia *Eastern Freeway Mumbai, Mumbai, India *, a cargo liner in service 1946-65 Education * Eastern University (other) *Eastern College (other) Other uses * Eastern Broadcasting Limited, former name of Maritime Broadcasting System, Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puente De La Mujer
The Puente de la Mujer ( Spanish for "Woman's Bridge") is a rotating footbridge for Dock 3 of the Puerto Madero commercial district of Buenos Aires, Argentina. It is of the cantilever spar cable-stayed bridge type and is also a swing bridge, but somewhat unusual in its asymmetrical arrangement. It has a single mast with cables suspending a portion of the bridge which rotates 90 degrees in order to allow water traffic to pass. When it swings to allow watercraft passage, the far end comes to a resting point on a stabilizing pylon. History Designed by the Spanish architect and structural engineer Santiago Calatrava on a plan very similar to a 251-metre bridge over the Guadalquivir River in Seville, Spain (1992) and a 213-metre bridge over the Sacramento River in Redding, California (2004), it has a forward-, rather than a reverse-angled cantilever, as is seen in those bridges. Started in 1998, it was inaugurated on December 20, 2001, and is the first of only two Calatrava structures ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asymmetric (PSF)
Asymmetric may refer to: *Asymmetry in geometry, chemistry, and physics Computing * Asymmetric cryptography, in public-key cryptography *Asymmetric digital subscriber line, Internet connectivity * Asymmetric multiprocessing, in computer architecture Other * Asymmetric relation, in set theory *Asymmetric synthesis Enantioselective synthesis, also called asymmetric synthesis, is a form of chemical synthesis. It is defined by IUPAC as "a chemical reaction (or reaction sequence) in which one or more new elements of chirality are formed in a substrate molecu ..., in organic synthesis * Asymmetric warfare, in modern war * Asymmetric Publications, a video game company * ''Asymmetry'' (Mallory Knox album), 2014 * ''Asymmetry'' (Karnivool album) * Asymmetry (population ethics) * Asymmetry (novel), a 2018 novel by Lisa Halliday See also * * {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blohm & Voss BV 141
The Blohm & Voss BV 141 was a World War II German tactical reconnaissance aircraft, notable for its uncommon structural asymmetry. Although the Blohm & Voss BV 141 performed well, it was never ordered into full-scale production, for reasons that included the unavailability of the preferred engine and competition from another tactical reconnaissance aircraft, the Focke-Wulf Fw 189. Development In 1937, the German Air Ministry – the '' Reichsluftfahrtministerium'' (RLM) – issued a specification for a single-engine reconnaissance aircraft with optimal visual characteristics. The preferred contractor was Arado with the Ar 198, but the prototype proved unsuccessful.. The eventual winner was the Focke-Wulf Fw 189 ''Uhu''; even though its twin-boom design using two smaller engines did not match the requirement of a single engined aircraft. Blohm & Voss ( Hamburger Flugzeugbau) although not invited to participate, pursued as a private venture something far more radical. The pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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