TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

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A function that is zero for all time preceding a certain instant and has a constant finite value thereafter.  3, fiche 1, Anglais, - step%20function

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step function : not necessarily a unit step [function].  2, fiche 1, Anglais, - step%20function

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 DEF

Fonction nulle pour tous les instants précédant un certain instant et ayant ensuite une valeur constante finie.  3, fiche 1, Français, - fonction%20%C3%A9chelon

Fiche 1,  Justifications,  Espagnol

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Función de una variable x cuyo valor es cero si x<0 y A si 0<=x.  1, fiche 1, Espagnol, - funci%C3%B3n%20escal%C3%B3n

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A es un número real que se llama altura de la función escalón.  1, fiche 1, Espagnol, - funci%C3%B3n%20escal%C3%B3n

Fiche 2,  Justifications,  Anglais

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A discontinuous function whose value is zero for negative argument and one for positive argument.  3, fiche 2, Anglais, - Heaviside%20step%20function

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One common example is when a voltage is switched on or off in an electrical circuit at a specified value of time t.... The switching process can be described mathematically by the function called the unit step function(otherwise known as the Heaviside function after Oliver Heaviside).  2, fiche 2, Anglais, - Heaviside%20step%20function

Fiche 2,  Justifications,  Français

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Fonction discontinue prenant la valeur 0 pour les réels strictement négatifs et la valeur 1 partout ailleurs.  3, fiche 2, Français, - fonction%20de%20Heaviside

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La fonction de Heaviside représente par exemple un générateur de courant continu qu'on met en route à t=0.  1, fiche 2, Français, - fonction%20de%20Heaviside

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Anglais

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A very original set of experiments carried out by the Unit of Molecular Biology of Gene Expression concerns another protein essential for mouse development that is also a transcription factor. This factor known as KBF2 or RBP-Jk is homologous to a Drosophila gene product, Su(H)(Suppressor of Hairless), which belongs to the Notch signal transduction cascade involved in regulating the competence of a cell to respond to specific developmental cues. A likely function of the Su(H) protein is to serve as an anchor on DNA for non DNA-binding transcriptional activators. This function is conserved in the Notch pathway : the activation of this transmembrane receptor likely involves a proteolytic cleavage step which releases its intracellular domain; following nuclear translocation, it activates its target genes by binding to the Su(H) protein, which is already bound to several sites in the target promoters.  2, fiche 3, Anglais, - Su%28H%29%20protein

Fiche 3,  Justifications,  Français

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La protéine Su(H), impliquée dans l'activité de transmission de ce signal, semble capable de s'associer à la région intracellulaire de Notch. C'est un facteur de transcription qui se lie à certaines séquences localisées dans les promoteurs de plusieurs des gènes cibles de Notch.  1, fiche 3, Français, - prot%C3%A9ine%20Su%28H%29

Fiche 3,  Justifications,  Espagnol

Fiche 4,  Justifications,  Anglais

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The next step toward realism and applicability is taken when the extended Weierstrass function is randomized. The simplest and most intrinsic method consists in multiplying its Fourier coefficients by independent complex Gaussian factors of zero mean and unit variance. The real and imaginary parts of the result deserve to be called Weierstrass(modified)-Gauss functions. In several ways, they are approximate fractional Brown functions.  1, fiche 4, Anglais, - Weierstrass%20modified%2DGauss%20function

Fiche 4,  Justifications,  Français

Fiche 4,  Justifications,  Espagnol