- Endosymbiotic theory
DEFAULTSORT Endosymbiotic Theory Category Evolutionary biology Category Symbiosis Category ... 14, 121 31, 137 46, 153 62 ref Ivan Wallin extended the idea of an endosymbiotic origin to mitochondrion ... to be the hereditary material of organisms led to a resurrection of the idea in the 1960s. The endosymbiotic theory was advanced and substantiated with microbiological evidence by Lynn Margulis in a 1967 ... cells originated as communities of interacting entities, including endosymbiotic spirochaete ... i.e., by cooperation . The possibility that peroxisome s may have an endosymbiotic origin has also ... direct.com content 1 8 Provides evidence that contradicts an endosymbiotic origin of peroxisomes ... membrane of the host cell. The endosymbiotic acquisition of a eukaryote cell is represented in the cryptophytes ... this theory is still debated. ref cite journal author McFadden GI, van Dooren GG title Evolution red ... RS title Viral Theory and Endosymbiosis year 1959 url http www.psychoneuroendocrinology.com symbiosis.pdf Discusses theory of origin of eukaryotic cells by incorporating mitochondria and chloroplasts ... more details
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- In Theory
In Theory might refer to one of the following In Theory Star Trek The Next Generation In Theory Star Trek The Next Generation , an episode of Star Trek The Next Generation In Theory band , an American rock band disambig ... more details
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- Theory
other uses Theory disambiguation Originally the word theory is a technical term from Ancient Greek . It is derived ... to contemplation or speculation, as opposed to action. ref Originally the word theory was used in Ancient ... century. OEtymD theory accessdate 2008 07 18 ref Theory is especially often contrasted to practice ... way to refer to any thing done for the sake of any action, in contrast with theory, which is not. Theoria ... between theoretical and practical uses the discipline of medicine Medical theory and theorizing ... theory , or scientific theory is generally understood to refer to a proposed explanation of empirical ... or falsification falsify it. In this modern scientific context the distinction between theory ... used the word theory to mean passionate sympathetic contemplation . ref cite book title From religion ... to function at the higher plane of theory. Thus it was Pythagoras who gave the word theory the specific meaning which leads to the classical and modern concept of a distinction between theory ... Theory mathematical logic Theories are analysis analytical tools for understanding , explanation explaining ... fields of study, including the art s and science s. A formal theory is syntax logic syntactic in nature ... form is identical to a theory as it is expressed in the formal language of mathematical ... expected to follow principles of reason rational thought or logic . Theory is constructed ... to the whole theory. Therefore the same statement may be true with respect to one theory, and not true ... of who He is and for that matter what a terrible person is under the theory. ref name curry ... is studied formally in mathematical logic, especially in model theory . When theories are studied ... case of this, an axiomatic theory, consists of axioms or axiom schemata and rules of inference ... . G del s incompleteness theorem shows that no consistent, recursively enumerable theory that is, one ... A theory is underdetermined also called indeterminacy of data to theory if, given the available ... more details
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- T-theory
T theory is a branch of discrete mathematics dealing with analysis of tree graph theory tree s and discrete metric spaces . General history As per Andreas Dress , T theory originated from a question raised by Manfred Eigen , a recipient of the Nobel Prize in Chemistry , in the late seventies. He was trying to fit twenty distinct transfer RNA t RNA molecule s of the Escherichia coli E. Coli bacterium into a tree. One of the most important concepts of T theory is the tight span of a metric space. If X is a metric space, the tight span T X of X is, up to isomorphism, the unique minimal injective metric space that contains X . John Isbell was the first to discover the tight span in 1964, which he called the injective envelope . Dress independently constructed the same construct, which he called the tight span. Application areas Phylogenetic analysis, which is used to create phylogenetic tree s. Online algorithm s k server problem k server problem Recent developments Bernd Sturmfels , Professor of Mathematics and Computer Science at University of California, Berkeley Berkeley , and Josephine Yu classified six point metrics using T theory. References cite journal author Hans Jurgen Bandelt and Andreas Dress title A canonical decomposition theory for metrics on a finite set journal Advances in Mathematics year 1992 volume 92 pages 47 105 doi 10.1016 0001 8708 92 90061 O cite journal author A. Dress, V. Moulton and W. Terhalle title T theory An Overview journal European Journal of Combinatorics year 1996 volume 17 issue 2 3 pages 161 175 doi 10.1006 eujc.1996.0015 cite journal author John Isbell authorlink John R. Isbell title Six theorems about metric spaces journal Comment. Math. Helv. year 1964 volume 39 pages 65 74 doi 10.1007 BF02566944 cite journal author Bernd Sturmfels and Josephine Yu title Classification of Six Point Metrics journal The Electronic Journal of Combinatorics year 2004 volume 11 combin stub Category Metric geometry Category Trees structure ru ... more details
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- Theory-theory
One source date May 2010 The term theory theory or theory theory is a theory in cognitive development that children construct theories to explain everything they experience. ref name KSB The developing person through childhood and adolescence , Kathleen Stassen Berger, 2005, Chapter 9 The Play Years Cognitive Development , p.262 of 608 pages , web http books.google.com books?id fCfiqDisIH8C&pg PA262 &lpg PA262 Books Google IH8C . ref According to theory theory, the best idea and explanation of mental processes ref name KSB in young children is that humans always seek reasons, causes, and underlying principles for what they experience. The essential idea of theory theory is that children do not want simple logical definitions but, rather, seek fuller explanations of various things, especially of those that involve them. small ref name KSB small The term originated in the 20th century, and the concept is also referred to as model theory . TOC Theory theory differs from the Theory of mind Theory of Mind which concerns mental states of people in that the full scope of theory theory also concerns mechanical devices or other objects, beyond just thinking about people and their viewpoints. See also Piaget Eric Ericson Abraham Maslow s Hierarchy of needs References Reflist Category Cognitive psychology Category Child development Category Neuroscience psych stub ... more details
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- Opening theory
Opening theory may refer to Backgammon opening theory Chess theory Opening theory Chess opening theory or Chess opening theory table Go opening theory disambig ... more details
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- Dependency theory (database theory)
Dependency theory is a subfield of database theory which studies implication and optimization problems related to logical constraints, commonly called dependencies, on databases. The best known class of such dependencies are functional dependencies , which form the foundation of candidate key keys on database relations. Another important class of dependencies are the multivalued dependency multivalued dependencies . A key algorithm in dependency theory is the Chase algorithm Chase , and much of the theory is devoted to its study. database stub Category Database theory Category Database constraints ... more details
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- Incentive theory
Incentive theory may refer to Organizational studies Theories and models a concept of human resources or management theory. Motivation Incentive theory a motivational theory disamb ... more details
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- Vortex theory
Vortex theory may refer to Mechanical explanations of gravitation a theory to explain gravitation . History of knot theory a theory to explain the atom . disambig ... more details
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- Shell theory
The term shell theory may refer to In astronomy the shell theorem In continuum mechanics the plate theory theory of plates and shells disambig ... more details
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- Hydrodynamic theory
Hydrodynamic theory may refer to Hydrodynamic theory dentistry Fluid dynamics , the theory of liquids in motion disambig ... more details
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- Behavior theory
Behavior theory can refer to in sociology , the collective behavior theory in political science s, the theories of political behavior in psychology , the theory of planned behavior in psychology , Learning theory education learning theory or behaviorism disambig ... more details
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- Cognitive theory
Cognitive theory may refer to Cognitive psychology Cognitive science Theory of cognitive development , Jean Piaget s theory of development and the theories which spawned from it Two factor theory of emotion , another cognitive theory disambig ... more details
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- Transport theory
Transport theory may refer to Light transport theory Transportation theory Transport theory statistical physics Transport phenomena Transportation Theory the immersion of individuals within narrative content disambig ... more details
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- General Theory
General theory may refer to Generalized Theory of Gravitation General Theory of Relativity General Systems Theory Generalized cohomology theory General theory of collaboration The General Theory of Employment, Interest and Money , a book written by John Maynard Keynes disambig it Teoria generale ... more details
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- Theory X and theory Y
Theory X and Theory Y are theories of human motivation created and developed by Douglas McGregor at the MIT ... is determined by the managerial trust of subordinates. Theory X In this theory, which has been proven ... structure is needed with narrow span of control at each and every level. According to this theory ... Michigan University B.A., St. John s University , if the organizational goals are to be met, theory X managers rely heavily on threat and coercion to gain their employee s compliance. Beliefs of this theory lead to mistrust, highly restrictive supervision, and a punitive atmosphere. The Theory ... whether it may be the system, policy, or lack of training that deserves the blame. A Theory ... businesses. Theory Y In this theory, management assumes employees may be ambitious and self motivated .... Given the proper conditions, theory Y managers believe that employees will learn to seek ... to which they are committed. A Theory Y manager believes that, given the right conditions, most ... motivation. Many people interpret Theory Y as a positive set of beliefs about workers. A close ... to a more positive view of workers and the possibilities that this creates. He thinks that Theory Y managers are more likely than Theory X managers to develop the climate of trust with employees that is required ... of decision making so that subordinates have say in decisions that influence them. This theory ... who is influenced by a theory X management style. Theory X and Theory Y combined For McGregor, Theory X and Y are not different ends of the same continuum. Rather they are two different continua in themselves. Thus, if managers need to apply Theory Y principles, that does not preclude them from being a part of Theory X & Y. McGregor and Maslow s hierarchy McGregor s work was based on Maslow s hierarchy of needs . He grouped Maslow s hierarchy into lower order Theory X needs and higher order Theory Y needs. He suggested that management could use either set of needs to motivate employees ... more details
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- Neutral theory
Neutral theory may refer to one of these two related theories the neutral theory of molecular evolution or the unified neutral theory of biodiversity . disambig ... more details
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- Humor theory
Humor theory can refer to Theory of humor Humorism , a theory in ancient Greek and Roman medicine disambig Long comment to avoid being listed on short pages ... more details
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- State theory
State theory may refer to State theory time Solid state theory Theories of the origin and operation of the State polity state in political science disambig ... more details
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- Learning theory
Learning theory may refer to Learning theory education , the process of how humans learn Behaviorism Cognitivism psychology Cognitivism Constructivism learning theory Constructivism Connectivism learning theory Connectivism Computational learning theory , a mathematical theory to analyze machine learning algorithms Instructional theory Multimedia learning theory Social cognitive theory Disambig ... more details
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- Final Theory
Final Theory may refer to Theory of Everything a putative theory in Physics . Final Theory novel a 2008 science fiction novel by Scientific American editor Mark Alpert. dab ... more details
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- Shape theory
Shape theory refers to three different theories Shape theory mathematics Shape theory in topology Shape analysis in mathematics and computer science Shape theory of olfaction disambig ... more details
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- Field theory
Field theory may refer to Field theory mathematics , the theory of the algebraic concept of field Field theory physics , a physical theory which employs Field physics fields in the physical sense , consisting of two types Classical field theory , the theory and dynamics of classical fields. Quantum field theory , the theory of quantum mechanical fields. Field theory psychology , a psychological theory which examines patterns of interaction between the individual and his environment disambig nl Veldtheorie pl Teoria pola ru sq Teoria e fush s ... more details
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- Formal theory
Formal theory can refer to Another name for a Theory mathematical logic theory which is expressed in formal language . An axiomatic system , something representable by symbols and its operators Formal theory political science Formal theory from political science , the theoretical modeling of social systems based on game theory , dynamical systems theory , among other interdisciplinary fields. ref http www.polisci.ucla.edu portlets methodology Formal Theory & Quantitative Methods , from UCLA s Department of Political Science website. ref References references disambig ... more details
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- Rigidity theory
Rigidity theory may refer to Study of the concept of rigidity mathematics Mathematical theory of structural rigidity disambig ... more details
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