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Topic: S-expression

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Expression vector - Wikipedia, the free encyclopedia Expression vectors are often specifically designed to contain regulatory sequences that act as enhancer and promoter regions, and lead to efficient transcription of the gene that is carried on the expression vector. Once the expression vector is inside the cell, the protein that is encoded by the gene is produced by the cellular transcription and translation machinery. Expression vectors are used for molecular biology techniques such as site-directed mutagenesis. en.wikipedia.org /wiki/Expression_vector   (205 words)

Blank - Wikipedia, the free encyclopedia A blank expression is either one of slight confusion when someone refers to something which you do not understand or a face where you which to hide your expression or feelings from other people. Blank as in 'unused' or 'clear'; a blank slate, a blank sheet of paper. A blank (Scrabble) is a unique tile that rather than having one of the letters of the alphabet printed on it, it has a blank face and can be substituted for any letter the player desires. en.wikipedia.org /wiki/Blank   (235 words)

Regular expression - Wikipedia, the free encyclopedia Regular expressions correspond to the type 3 grammars of the Chomsky hierarchy and may be used to describe a regular language. A regular expression (abbreviated as regexp or regex, with plural forms regexps, regexes, or regexen) is a string that describes or matches a set of strings, according to certain syntax rules. Regular expressions are used by many text editors and utilities to search and manipulate bodies of text based on certain patterns. en.wikipedia.org /wiki/Regular_expression   (3575 words)

Lambda calculus - Wikipedia, the free encyclopedia In lambda calculus, every expression stands for a function with a single argument; the argument of the function is in turn a function with a single argument, and the value of the function is another function with a single argument. The question of whether two lambda calculus expressions are equivalent cannot be solved by a general algorithm, and this was the first question, even before the halting problem, for which undecidability could be proved. This paper contains the proof that the equivalence of lambda expressions is in general not decidable. en.wikipedia.org /wiki/Lambda_calculus   (2307 words)

Malayalam Hundreds of individual lexical items and may idiomatic expressions in modern Malayalam are of English origin. www-2.cs.cmu.edu /afs/cs/user/vipin/www/mal.html   (2307 words)

Gene expression - Wikipedia, the free encyclopedia Gene expression, also called protein expression or often simply expression is the process by which a gene's DNA sequence is converted into the structures and functions of a cell. Genes have sometimes been regarded as nodes in a network, with inputs being proteins such as transcription factors, and outputs being the level of gene expression. Gene expression is a multi-step process that begins with transcription of DNA, which genes are made of, into messenger RNA. en.wikipedia.org /wiki/Gene_expression   (587 words)

Colloquialism - Wikipedia, the free encyclopedia A colloquialism is an informal expression, that is, an expression not used in formal speech or writing. A colloquialism can sometimes make its way into otherwise formal speech, as a sign that the speaker is comfortable with his or her audience, in contrast to slang, which if used in formal speech is more likely done so consciously for humorous effect. Colloquialisms can include words (such as "gonna" or "grouty"), phrases (such as "ain't nothin'" and "dead as a doornail"), or sometimes even an entire aphorism ("There's more than one way to skin a cat"). en.wikipedia.org /wiki/Colloquial   (587 words)

Expression (mathematics) - Wikipedia, the free encyclopedia For a given combination of values for the free variables, an expression may be evaluated to a value, and is said to have that value, although for some combinations of values of the free variables, the expression may be undefined. Expressions and their evaluation were formalised by Alonzo Church and Stephen Kleene in the 1930s in their lambda calculus. An expression combines numbers, operators, and/or free variables and bound variables: bound variables are defined in the expression (they are for internal use), free variables are taken from the context. en.wikipedia.org /wiki/Expression_(mathematics)   (309 words)

Lambda abstraction - Wikipedia, the free encyclopedia A lambda abstraction is an abstract lambda expression. More specifically, a lambda abstraction is a lambda expression with no free variables: each of its variables are bound by some lambda. In this case, the expression could stand for a 'logic proposition'. en.wikipedia.org /wiki/Lambda_abstraction   (109 words)

Keyboard expression - Wikipedia, the free encyclopedia Keyboard expression often shortened to expression is the ability of the keyboard of a keyboard instrument to respond to the dynamics of the music. Thus a displacement sensing keyboard may have greater versitility when it is desired to have both organ and piano behaviour in an input device. The clavichord and some electronic keyboards also respond to the force with which a key is held down after the initial impact; They are pressure sensitive. en.wikipedia.org /wiki/Keyboard_expression   (109 words)

Chinese language - Wikipedia, the free encyclopedia Chinese morphology is strictly bound to a set number of syllables with a fairly rigid construction which are the morphemes, the smallest building blocks, of the language. The Chinese language, spoken in the form of Standard Mandarin, is the official language of the People's Republic of China and the Republic of China on Taiwan, as well as one of four official languages of Singapore, and one of six official languages of the United Nations. Old Chinese (T:上古漢語S:上古汉语P:Shànggǔ Hànyǔ), sometimes known as 'Archaic Chinese', was the language common during the early and middle Zhou Dynasty (11th to 7th centuries B.C.), texts of which include inscriptions on bronze artifacts, the poetry of the Shijing, the history of the Shujing, and portions of the Yijing (I Ching). en.wikipedia.org /wiki/Chinese_language   (109 words)

Expression - Specialised English Courses, Training and Workshops Expression was formed in 2000 and began as an organisation providing specialist English courses. Expression’s two directors, Lindsay Ellwood and Norma Taylor, decided to set up Expression after many years of teaching English in both academic and commercial situations. Expression - Specialised English Courses, Training and Workshops www.expression.demon.nl   (109 words)

Bin's On-Line Dictionary Blank door, or Blank window (Arch.), a depression in a wall of the size of a door or window, either for symmetrical effect, or for the more convenient insertion of a door or window at a future time, should it be needed. Blank indorsement (Law), an indorsement which omits the name of the person in whose favor it is made; it is usually made by simply writing the name of the indorser on the back of the bill. Blank bar (Law), a plea put in to oblige the plaintiff in an action of trespass to assign the certain place where the trespass was committed; -- called also common bar. language.bin.org /ref/dict?t=Blank   (603 words)

ATCC: Vector Diagrams Expression vector for rapid purification of fusion proteins and release of proteins with fewer extraneous N-terminal amino acids. Expression vector encoding the beta-galactosidase alpha peptide (lacZ'), permitting blue-white visual detection of re combinants. Expression vector for rapid purification of fusion proteins that contain no amino terminal extensions after thrombin cleavage. www.atcc.org /common/products/vectors.cfm   (5301 words)

Regular expression - Wikipedia, the free encyclopedia A regular expression (abbreviated as regexp, regex, or regxp, with plural forms regexps, regexes, or regexen) is a string that describes or matches a set of strings, according to certain syntax rules. Regular expressions correspond to the type 3 grammars of the Chomsky hierarchy and may be used to describe a regular language. The integration of regular expressions in most computer languages is still very poor and, even though Perl's regular expression integration is one of the best around, part of the effort in the design of the future Perl6 is improving this integration. en.wikipedia.org /wiki/Regular_expression   (2995 words)

Directory of open access journals Expression of bcl-2 protein in gastric carcinoma and its significance. METHODS:Using immunohistochemical staining, the bcl-2 protein expression in 50 cases of gastric carcinoma and its relation to clinical status and pathomorphological parameters were observed. CONCLUSION:Aberrant bcl-2 protein expression appears to be specifically associated with development of intestinal-type gastric carcinoma, bcl-2 protein expression might play an important role in the early development/promotion and phenotypic differentiation of gastric carcinomas, but not in tumor progression. www.doaj.org /abstract?id=92290&toc=y   (170 words)

Expression (programming) - Wikipedia, the free encyclopedia An expression in a programming language is a combination of values, functions, tokens, atoms, and procedures, that are interpreted (evaluated) according to the particular rules of precedence and of association for a particular programming language, which computes and then produces (returns, in a stateful environment) another value. As in mathematics, the expression is (or can be said to have) its evaluated value; the expression is a representation of that value. The expression is said to evaluate to that value. en.wikipedia.org /wiki/Expression_(programming)   (105 words)

My Dissertation Formulaic expression seems to be pervasive enough and there is enough evidence of its pervasiveness in written documents that one should be able to detect linguistic developments. If the formula was a common mode of expression and if a formula is relatively stable in terms of its syntactic, morphologic or phonologic structure, then something was happening to the language as they were being written down and as they used them in their everyday speech. The dynamic formula is used both in oral literature and in ordinary speech and is directly involved in the linguistic evolution of the language. ccat.sas.upenn.edu /~benjamis/diss.html   (105 words)

Facial expression - Wikipedia, the free encyclopedia Facial expressions are a form of nonverbal communication, and can be voluntary or involuntary. Microexpressions, brief flashes of a facial expression, are likely to be involuntary and unconscious, and most people do not learn to read them at all. A facial expression results from one or more motions or positions of the muscles of the face. en.wikipedia.org /wiki/Facial_expression   (233 words)

Sociable machines - Facial expressions The basis set of facial postures has been designed so that a specific location in affect space specifies the relative contributions of the prototype postures in order to produce a net facial expression that faithfully corresponds to the active "emotion". Second, it lends clarity to the facial expression since the robot can only be in a single affective state at a time (by our choice), and hence can only express a single state at a time. Kismet's facial expressions are generated using an interpolation-based technique over a three dimensional space. www.ai.mit.edu /projects/sociable/facial-expression.html   (830 words)

Chinese - Wikipedia, the free encyclopedia Chinese nationalism, cultural, historiographical, and political theories, movements and beliefs that assert the idea of a cohesive, unified Chinese people and culture under state(s) that are primarily Chinese. Chinese cuisine is the culinary style of China, which is also popular throughout the world. Overseas Chinese in southeast Asia (particularly in Thailand, Malaysia and Singapore) and supporters of Taiwanese independence within Taiwan make a clear distinction between Hua ren (Chinese in the ethnic sense) and Zhongguo ren (Chinese in the political sense). en.wikipedia.org /wiki/Chinese   (830 words)

English Department, Pittsburg State University Went to is a colloquial expression that usually means began to or tried to. Came time is a colloquial expression that usually means is time or was time. Come to find out is a colloquial expression that usually means to learn or to discover. faculty.pittstate.edu /engl/gt/words02.html   (830 words)

Online Etymology Dictionary As an interjection, 1598; as an expression of surprise or disgust, 1834. Expression Hell in a handbasket is c.1941, perhaps a revision of earlier heaven in a handbasket (c.1913), with a sense of "easy passage" to whichever destination. 1801, "given to cutting a dash," (1786), which was a colloquial expression for "acting brilliantly," from dash in the sense of "showy appearance," which is attested from 1715. www.etymonline.com /index.php?search=expression&searchmode=phrase   (830 words)

Expression Templates (Todd Veldhuizen) To evaluate the efficiency of the expression templates approach to evaluating vector expressions, benchmark results were obtained comparing its performance to hand-crafted C code, and that of a conventional vector class. For longer vectors (eg., length 100) the benchmark results were 95-99.5% the speed of hand coded C. Figure 6 compares the expression template technique to a conventional vector class which evaluates expressions using temporaries. In C, expressions are usually passed using a pointer to a callback function containing the expression. osl.iu.edu /~tveldhui/papers/Expression-Templates/exprtmpl.html   (2492 words)

PlanetMath: regular expression Here is an example of a regular expression that specifies a grammar that generates the binary representation of all multiples of 3 (and only multiples of 3). This is version 5 of regular expression, born on 2002-02-24, modified 2004-04-03. A little further work is required to transform this grammar into an acceptable form for regular grammars, but it can be shown that this grammar (and any grammar specified by a regular expression) is equivalent to some regular grammar. planetmath.org /encyclopedia/RegularExpression.html   (515 words)

Regular Expressions Regular expressions have a syntax in which a few characters are special constructs and the rest are ordinary. Regular expressions are a powerful way of specifying complex search and replace operations. An ordinary character is a simple regular expression which matches that character and nothing else. www.emerson.emory.edu /services/editors/ne/Regular_Expressions.html   (1076 words)

Protein expression protein expression liue a mile from the Cittie like The beginning to grow in her a beam seeks to discover the nature blood. protein-expression.adhr.nl   (37 words)

Lambda expression - Computing Reference - eLook.org A term in the lambda-calculus denoting an unnamed function (a "lambda abstraction"), a variable or a constant. The pure lambda-calculus has only functions and no constants. www.elook.org /computing/lambda-expression.htm   (27 words)

Patent 4176578: System for encoding of bass and treble expression effects while recording from the keyboard of an electronic player piano While in the present invention it is preferred that the bass expression bits be recorded close to and in advance of the bass bits and that the treble expression bits be recorded as close to and in advance of the treble notes, this is not a necessary requirement of the invention. Thus the bass expression bits are carried in data cells in the time frames preceding and contiguous to the bass note data cells and the treble note expression bits are carried in bit or data cell positions of the time frame just preceding the cells assigned to carry treble note data bits. According to the invention the bass expression bits are inserted into data cells in each time frame in a position just in advance of the data cells containing the key switch closures of the group the expression data pertains to. www.freepatentsonline.com /4176578.html   (27 words)

Category:Gene expression - Wikipedia, the free encyclopedia Gene expression is the multi-step process by which a gene's information is converted into the structures and functions of a cell, following the central dogma of molecular biology. The main article for this category is Gene expression. en.wikipedia.org /wiki/Category:Gene_expression   (83 words)

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