No footnotes date April 2009 Linear time invariant systemtheory , commonly known as LTIsystemtheory ... time the input is applied. The fundamental result in LTIsystemtheory is that any LTIsystem can be characterized entirely by a single function called the system s impulse response . The output .... LTIsystemtheory is good at describing many important systems. Most LTI systems are considered ... JHU 520.214 Signals and Systems course notes . An encapsulated course on LTIsystemtheory. Adequate for self teaching. DEFAULTSORT LtiSystemTheory Category Digital signal processing Category .... ref Hespanha 2009, p. 78. ref Overview The defining properties of any LTIsystem are linearity ... and the frequency domain right 320px Equivalently, any LTIsystem can be characterized in the frequency ..., and are mathematically equivalent to RLC circuits. Most LTIsystem concepts are similar between the continuous ... why the convolution produces the output of an LTIsystem, let the notation math scriptstyle ... by the system not let through . Examples A simple example of an LTI operator is the derivative . math ... have any counterexamples? a non causal LTI CT system? Causality main Causal system the causal ... z m math is dependent only on the parameter z . So math z n math is an eigenfunction of an LTIsystem ... by the system not let through . Examples A simple example of an LTI operator is the delay ... The input output characteristics of discrete time LTIsystem are completely described by its impulse ... main Causal system the causal system article needs work A discrete time LTIsystem is causal if the current ... Prentice Hall year 2007 isbn 0 13 041207 4 cite book author Hespanha,J.P. title Linear SystemTheory ... System es Sistema LTI fa nl LTD systeem ja LTI ru ... network circuit s, signal processing , control theory , and other technical areas. It investigates the response of a linear system linear and time invariant system to an arbitrary input signal ... more details
LTI can refer to LTI Lingua Tertii Imperii , a book by Victor Klemperer Language Technologies Institute , a division of Carnegie Mellon University , Pittsburgh. LTIsystemtheory linear time invariant systemtheory , an engineering theory that investigates the response of a linear, time invariant system to an arbitrary input signal London Taxis International , a division of Manganese Bronze Holdings PLC License to Ill the debut album by Rap Group Beastie Boys Industrial injury Lost Time Incident LTI Software & Engineering , a Canadian based consulting firm in information technology IT and engineering disambig de LTI es LTI it LTI pl LTI ... more details
Unreferenced stub auto yes date December 2009 Orphan date February 2009 An open system is a feedforward system that does not have any feedback loop to control its output in a control system in systems theory . The system is an open system because it does not have a feedback loop in its control. In contrast, a closed system control theory closed system uses on a feedback loop to control the operation of the system. In an open system, the output of this system is not fed back into the input to the system for control or operation. An open system is essentially a feedforward system. feedforward increases speed Category Control theory DEFAULTSORT Open System Control Theory Engineering stub ... more details
About systems theory Open system disambiguation File Basic Open System Model.gif 320px thumb right Open System Model basics An open system is a system which continuously interacts with its environment. The interaction can take the form of information, energy, or material transfers into or out of the system boundary, depending on the discipline which defines the concept see below . An open system should be contrasted with the concept of an isolated system which exchanges neither energy, matter,nor information with its environment. The concept of an open system was formalized within a framework that enabled one to interrelate the Organismic theorytheory of the organism , thermodynamics , and Theory of Evolution evolutionary theory . ref Luhmann, Niklas. Social Systems . Stanford Stanford University Press, 1995 pp. 6 7 ref This concept was expanded upon with the advent of information theory and subsequently systems theory . Today the concept has its applications in the natural and social sciences. Thermodynamics cTopic State and Properties In the natural sciences an open system is one whose ... the world systems theory world system as inherently open though unified would solve many of the problems ... Dynamical system Glossary of systems theory Isolated system Maximum power principle Non equilibrium ... Systems in Social Science Phantom loop Systemtheory Thermodynamic system References references ... Glossary Maxwell Demon, 1998. ref In physics a closed system , by contrast, is permeable to energy but not to matter. Open systems have a number of consequences. A closed system contains limited energies. The definition of an open system assumes that there are supplies of energy that cannot be depleted ... can be treated as infinite for the purposes of study. One type of open system is the so called radiant energy system, which receives its energy from solar radiation &ndash an energy source that can be regarded ... In the social sciences an open system is a process that exchanges material, energy, people, capital ... more details
jargon date August 2011 refimprove date March 2009 The terms closed system and Open system systems theory open system have long been defined in the widely and long before any sort of amplifier was invented ... in a control system . In the theory of control systems, there is room for systems which contain ... and feedforward . The terms feedforward and feedback arose first in the 1920s in the theory ... by H.S Black in 1934. In thermodynamics, an open system is one which can take in and give out ponderable matter . In thermodynamics, a closed system is one which cannot take in or give out ponderable ... of energy. In thermodynamics, a closed system can be further restricted, by being isolated an isolated system cannot take in nor give out either ponderable matter or any form of energy. It does not make ... refer to elements or paths within a system, not to a system as a whole. THE input to the system comes ... of the output of a system can be compounded, with the intermediacy of a feedback path, in some way such as addition or subtraction, with a signal derived from the system input, to form a return balance signal that is input to a PART of the system to form a feedback loop within the system. It is not correct to say that part of the output of a system can be used as THE input to the system. There can be feedforward paths within the system in parallel with one or more of the Feedback feedback loops of the system so that the system output is a compound of the outputs of the feedback loops and of the parallel feedforward paths. Feedforward and feedback often occur in one and the same system. It makes sense to speak of a control system only if it contains at least one feedforward path the presence ... loop, provided its input and output are defined. A 1993 paper entitled General Systems Theory by David S. Walonick, Ph.D., states in part A closed system is one where interactions occur only among the system components and not with the environment. An open system is one that receives input from the environment ... more details
Social rule systemtheory is an attempt to formally approach different kinds of social rule systems in a unified ... science s and humanities . Social rule systemtheory is fundamentally an institutionalism ... 1957, 1965 . The universality of social rule systems and rule processes Social rule systemtheory ... spectators of the flow of physical causality. blockquote Social rule systemtheory and complex ... systemtheory is applied to the description and analysis of institutions such as bureaucracy, markets ... systemtheory stresses rule based cognitive processes such as framing, contextualizing, and classifying ..., social rule systemtheory stresses that particular institutions and their organizational instantiations ... Organization Social Rule SystemTheory With Applications . London Sage Publications. Burns, T. R. and Gomoli ska ... Rule systemTheory Applications and Explorations. Berlin New York Peter Lang. Garfinkel, A. 1981 ... use of sets of rules to define concepts in social theory. The development of a more systematic ... 1987 , Machado 1998 , Carson 2004 , Flam and Carson 2008 . Social theory concepts such as norm, value ... of socio cultural evolutionary theory Burns and Dietz, 1992 Geoffrey Hodgson Hodgson 2002 Schmid and Wuketits ... enerprises, and government agencies. Thus, this theory posits that the making, interpretation, and implementation ..., rule system complexes are examined language, cultural codes and forms, institutional arrangements ... rule system, questions such as the following can be intersubjectively and collectively answered ... more or less context dependent. Interpretation varies across a population sharing a rule system ... to neo institutionalism . It is a theory that analyses the links between social structure ..., and social action and social interaction, on the other. The theory shows, for example, in what ways ... built into the wider environment Powell, 2007 . Rule system change and evolution Institutional ... Levi, 1990 . Social rule system theorists point to three major power mechanisms of rule system reproduction ... more details
File Bundesarchiv Bild 183 S90733, Victor Klemperer.jpg thumb upright Victor Klemperer LTI Lingua Tertii Imperii Notizbuch eines Philologen 1947 is a book by Victor Klemperer , Professor of Literature at the University of Dresden . The title, half in Latin and half in German language German , translates to The Language of the Third Reich A Philologist s Notebook. Lingua Tertii Imperii studies the way that Nazi propaganda Glossary of the Third Reich altered the German language to inculcate people with National Socialist ideas. The book was written under the form of personal notes which Klemperer wrote in his diary, especially from the rise of the Nazi regime in 1933, and even more after 1935, when Klemperer, stripped of his academic title because he was Judaism Jewish under the Nuremberg Laws , had to work in a factory and started to use his diary as a personal exit to his frustrating and miserable life. LTI demonstrates how a new language came to be naturally spoken by most of the population. On the reverse, the text also emphasizes the idea that resistance to oppression begins by questioning the constant use of buzzword s. Both the book and its author unexpectedly survived the war. LTI was first published in 1947 in Germany. It underlines odd constructions of words intended to give ..., twist facts or violate human rights, in the name of a higher ideal and in accordance to their theory ... more Nordic theory Nordic . entjuden to de Jew . Conversely, after the war, a strong trend of Entnazifizierung ... use. For although scraps of the LTI surface all over the place in contemporary language, fanatical ... 2001 05 08 The Language of the Third Reich LTI Lingua Tertii Imperii A Philologist s Notebook http mysite.verizon.net vze11rxkx Victor Klemperer s LTI Lingua Tertii Imperii Category Nazi terminology ... Books about propaganda de LTI Notizbuch eines Philologen es LTI Lingua Tertii Imperii fr Lingua Tertii Imperii la LTI Notizbuch eines Philologen nl LTI Notizbuch eines Philologen pl LTI notatnik ... more details
is a deductive theory , in that its content is based on some formal system formal system of logic ... theory See also div style moz column count 3 column count 3 Falsifiability Formal language Formal system ...other uses Theory disambiguation The English word theory was derived from a technical term in philosophy ... to Action theory philosophy action . ref The word theory was used in Ancient Greek philosophy ... been in use in English since at least the late 16th century. OEtymD theory accessdate 2008 07 18 ref Theory is especially often contrasted to practice from Greek Wiktionary praxis praxis , a Greek term for doing , which is opposed to theory because theory involved no doing apart from itself. A classical ... Medical theory and theorizing involves trying to understand the causes and Nature philosophy nature ... empirical phenomena which are not easily measurable, in modern science the term theory , or scientific theory is generally understood to refer to a proposed explanation of empirical phenomena, made in a way ... context the distinction between theory and practice corresponds roughly to the distinction between ... Religion to Philosophy , F. M. Cornford Francis Cornford suggests that the Orphics used the word theory ... 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 as uninvolved, neutral thinking ... of Western Philosophy ref In Aristotle s terminology, as has already been mentioned above, theory ... and theory involve thinking, but the aims are different. Theoretical contemplation considers things ... Main Theory mathematical logic Theories are analysis analytical tools for understanding ... in many and varied fields of study, including the art s and science s. A formal theory is syntax ... in such a way that their general form is identical to a theory as it is expressed in the formal language ... language, but are generally expected to follow principles of reason rational thought or logic . Theory ... more details
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
One source date May 2010 The term theorytheory or theorytheory 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 theorytheory, 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 theorytheory 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 Theorytheory differs from the Theory of mind Theory of Mind which concerns mental states of people in that the full scope of theorytheory also concerns mechanical devices or other objects, beyond just thinking about people and their viewpoints. See also Piaget Erik Erikson Abraham Maslow s Hierarchy of needs References Reflist Category Cognitive psychology Category Child development Category Neuroscience developmental psych stub cognitive psych stub ... more details
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 data structures ru ... more details
In mathematics , System T can refer to A theory of arithmetic in all finite types use in G del s Dialectica interpretation An axiom system of modal logic SIA ... more details
. System concepts Environment and boundaries Systems theory views the world as a complex system ... be two or more distinct systems. Theoretical Framework An open system systems theory open system ... , or Open system systems theory open , Walter F. Buckley ref Buckley, 1967. ref defines social ... in terms of relatively closed, and open system systems theory open system s. It seems most unlikely ... Systems engineering Systems psychology Systems theory Thermodynamic system s Control theory multicol ... de sistemas.com libros dynamics.htm Theory and Practical Exercises of System Dynamics by Juan ...Other uses Image System boundary.svg thumb right 250px A schematic representation of a closed system and its boundary A system from Latin syst ma , in turn from Greek language Greek lang grc syst ma, whole compounded of several parts or members, system , literary composition ref http www.perseus.tufts.edu ... or interdependent components forming an integrated whole. A system is a set of Element mathematics ... the general properties of systems include systems theory , cybernetics , dynamical systems , thermodynamics ..., energy, information, or data Systems have interconnectivity the various parts of a system have ... of functions The term system may also refer to a set of rules that governs structure and or behavior. History The word system in its meaning here, has a long history which can be traced back to Plato ... more ancient times, as it derives from the verb sun stemi , uniting, putting together. System means ..., before Descartes, there was no system . Plato had no system . Aristotle had no system . Marshall ... American Library, New York, 1967, p. 288 . In the 19th century the first to develop the concept of a system ... . In 1824 he studied the system which he called the working substance , i.e. typically a body of water vapor, in steam engines, in regards to the system s ability to do work when heat is applied ... systems surroundings and began to use the term working body when referring to the system. One ... more details
The System can refer to Any system Any system of government , law , or bureaucracy political system . The phrase in this usage can carry negative connotations. Systema , a Russian martial art Das System , a derogatory term used by the NSDAP Nazis to denote contemptuously the Weimar Republic . In media The System band , an American synth pop duo founded in 1982 The System film The System film , a 1964 British film The System satellite radio , a channel on WorldSpace satellite radio Derren Brown The System The System , a 2008 TV special starring Derren Brown The System , a book on chess by Hans Berliner The System , a comic book by Peter Kuper The System , a song by punk band The Black Pacific See also System disambiguation disambig ... more details
Complexity theory may refer to The study of a complex system or complex systems Complexity theory and organizations , the application of complexity theory to strategy Complexity economics , the application of complexity theory to economics Chaos theory , the study of the behavior of dynamical systems that are highly sensitive to initial conditions Computational complexity theory , a field in theoretical computer science and mathematics Algorithmic information theory See also Systems theory Complexity Disambiguation ar fr Th orie de la complexit hr Teorija slo enosti ru ... more details
Lyapunov theory is a collection of results regarding the stability of dynamical system s. This theory is named after the Russian mathematician Aleksandr Mikhailovich Lyapunov . The primary result of the theory is the concept of Lyapunov stability . mathapplied stub Category Dynamical systems pl Twierdzenie Lapunowa ... more details
wiktionary theoryTheory is speculative explanation, as opposed to practice or just doing . Theory may also refer to Theory mathematics , a self consistent body of definitions, axioms, theorems, examples, and so on Theory mathematical logic , a set of sentences theorems in a formal language Scientific theory , a principle or body of principles for explaining a class of phenomena Philosophical theory , the collective statements underlying a philosophy, school of thought, or belief system Theoria in theological discussions Computational complexity theory in computer science Theory clothing retailer A type of argument in Policy debate and Lincoln Douglas debate See also Lookfrom Theory Intitle theory disambig et Teooria t psustus es Teor a desambiguaci n pt Teoria desambigua o ... more details
Flatness in systems theory is a system property that extends the notion of Controllability from LTIsystemtheory linear systems to Nonlinearity nonlinear dynamical system s. A system that has the flatness property is called a flat system . Flat systems have a fictituous flat output , which can be used to explicitly express all states and inputs in terms of the flat output and a finite number of its derivatives. Flatness in systems theory is based on the mathematical notion of Flat morphism flatness in commutative algebra and is applied in control theory . Definition A nonlinear system math dot mathbf x t mathbf f mathbf x t , mathbf u t , quad mathbf x 0 mathbf x 0, quad mathbf u t in R m, quad mathbf x t in R n, text Rank frac partial mathbf f mathbf x , mathbf u partial mathbf u m math Is flat, if there exists an output math mathbf y t y 1 t ,...,y m t math that satisfies the following conditions The signals math y i,i 1,...,m math are representable as functions of the states math x i,i 1,...,n math and inputs math u i,i 1,...,m math and a finite number of derivatives with respect to time math u i k , k 1,..., alpha i math math mathbf y Phi mathbf x , mathbf u , dot mathbf u ,..., mathbf u alpha math . The states math x i,i 1,...,n math and inputs math u i,i 1,...,m math are representable ... fictitious output is called flat output , and the system is flat . Relation to controllability of linear systems A LTIsystemtheory linear system math dot mathbf x t mathbf A mathbf x t mathbf B mathbf ... u math as the nonlinear system is flat, if and only if it is Controllability controllable . For LTIsystemtheory linear systems both properties are equivalent, hence exchangeable. Significance The flatness ... of non linear systems introductory theory and examples. International Journal of Control 61 6 , pp. 1327 1361, 1995 http cas.ensmp.fr rouchon publications PR1995 IJC95.pdf See also Control theory Control engineering Controller control theory Category Control theory ar de Flachheit ... more details
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 ja ... more details
used in linear time invariant LTI systems to find the output of a system, when you know the input and impulse response. So we generally find the output of the system convolutional encoder, which ...cleanup rewrite date February 2010 Coding theory is the study of the properties of code s and their fitness ... such as information theory , electrical engineering , mathematics , and computer science for the purpose ... two aspects to Coding theory Data compression or, source coding Error correction code Error ... of source coding is to take the source data and make it smaller. Principle Entropy information theory ... main Forward error correction The aim of channel coding theory is to find codes which transmit quickly ... algebraic coding theory denotes the sub field of coding theory where the properties of codes are expressed ... theory is basically divided into two major types of codes Citation needed date July 2008 Linear ... is the dimensions refer to the length of the codeword as defined above. The theory of coding ... 119687 Trellis shaping , IEEE Transactions on Information Theory, Vol. 38, Issue 2, Part 2. ref one ... communication devices. Other applications of coding theory misleading Another concern of coding theory is designing codes that help synchronization . A code may be designed so that a Phase waves ... in neural systems, 1990 ref and that neurons follow the principles of information theory and compress ... throughout the brain and wider nervous system. See also Coding gain Covering code Error correcting code Group testing Hamming distance , Hamming weight Information theory Lee distance Spatial ... coding Spatial multiplexing Spatial multiplex coding Timeline of information theory Timeline of information theory, data compression, and error correcting codes List of algebraic coding theory topics ... , Introduction to the Theory of Error Correcting Codes , John Wiley & Sons, Inc., ISBN 0 471 08684 3. Elwyn R. Berlekamp 1984 , Algebraic Coding Theory , Aegean Park Press revised edition , ISBN 0894120638 ... more details
Consensus theory ref http www.sfu.ca rptoews Durkheim.htm ref is a social theory that holds that a particular political system political or economic system is a fair system, and that social change should take place within the social institution s provided by it. Consensus theory contrasts sharply with conflict theory , which holds that social change is only achieved through conflict. Under consensus theory the absence of conflict is seen as the equilibrium state of society and that there is a general or widespread agreement among all members of a particular society about Norm philosophy norms , value ethics values , Law rules and regulation s. Consensus theory is concerned with the maintenance or continuation of social order in society. The consensus theory serves as a sociological argument for the furtherance and preservation of the status quo . It is antagonistic to the conflict theory, which, serves as a sociological argument for modifying the status quo or for its total reversal. In consensus theory, the rules are seen as integrative, and whoever doesn t respect them is a deviant person. Under conflict theory, the rules are seen as coercive, and who transgresses them is considered oppressive and wrong. See also Karl Marx Emile Durkheim Max Weber Talcott Parsons Robert Merton Louis Althusser Ralph Dahrendorf Herbert Mead Herbert Blumer Structural functionalism Conservatism reflist social and political philosophy Category Social change Category Social theories ... more details
equations simpler than many nonlinear systems. For time invariant system time invariant systems this is the basis of the impulse response or the frequency response methods see LTIsystemtheory , which ... system of divisors in algebraic geometry Shift invariant systemLTIsystemtheory Nonlinear systemSystem analysis System of linear equations DEFAULTSORT Linear System Category Systems theory ar ...About systems as studied in systems theory a family of linear equations System of linear equations the concept in algebraic geometry Linear system of divisors Unreferenced date December 2009 A linear system is a mathematical model of a system based on the use of a linear operator . Linear systems typically ... theory, signal processing , and telecommunications . For example, the propagation medium for wireless communication systems can often be modeled by linear systems. A general deterministic system mathematics deterministic system can be described by operator, math H math , that maps an input, math ... x 2 t right math then a linear system must satisfy math alpha y 1 t beta y 2 t H left alpha x 1 t beta ... . Insert picture dipicting the superposition and scaling properties The behavior of the resulting system ... or frequency components . Typical differential equation s of linear time invariant system time invariant ... . Another perspective is that solutions to linear systems comprise a system of function ... use of linear models is to describe a nonlinear system by linearization . This is usually done for mathematical ... , t sub 1 sub of a linear system is defined as the response of the system at time t t sub 2 sub to a single ... system is math x t delta t t 1 , math where t represents the Dirac delta function , and the corresponding response y t of the system is math y t t t 2 h t 2,t 1 , math then the function h t sub 2 sub , t sub 1 sub is the time varying impulse response of the system. Time varying convolution integral Continuous time The output of any continuous time linear system is related to the input ... more details
orphan date February 2012 Image Minor as upside down major.png thumb right 350px Illustration of Riemann s dualist system minor as upside down major. Riemannian theory refers to the music theory musical theories of Hugo Riemann 1849 1919 . Riemann s dualist system for relating triad music triads was adapted from earlier 19th century harmony harmonic theorists. The term dualism refers to the emphasis on the inversional relationship between major and minor , with minor triad s being considered upside down versions of major triad s this dualism is what produces the change in direction described above. See also Utonality In the 1880 s, Riemann proposed a system of transformations that related triads directly to each other ref name Klumpenhouwer Klumpenhouwer, Henry, Some Remarks on the Use of Riemann Transformations, Music Theory Online 0.9 1994 ref See also Neo Riemannian theory Diatonic function Functional harmony Klang music Tonnetz Schenkerian analysis Sources reflist music theory stub Category Diatonic functions Category Music theory ... more details
Unreferenced date October 2009 The fermentation theory of disease is the now obsolete concept that many diseases, including the diseases which were epidemic, endemic and contagious , owe their origin to the presence of a morbific principle in the system, acting in a manner analogous to, although not identical with, the process of fermentation biochemistry fermentation . It was rendered obsolete by the germ theory of disease , which led to the new science of bacteriology . See also Zymotic disease s for the Greek language term zumoun for ferment DEFAULTSORT Fermentation Theory Category Obsolete medical theories Med stub ... more details
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
Encyclopedia
top
