133,189 research outputs found
Кубатурные формулы типа Обрешкова со степенью точности, равной четырем
No full text[Ionescu D. V.; Йонеску Д. В.]French. Bulgarian, Russian summar
Ionescu, Nae
No full textLa personnalité provocatrice de Nae Ionescu, professeur universitaire bucarestois de logique et philosophie, occupe l’attention du critique D. Micu. Ancien élève de C. Rădulescu-Motru et, plus tard, son assistant aux cours de philosophie, Nae Ionescu a eu une influence charismatique sur les consciences de ses propres étudiants, tout comme Mircea Eliade, Constantin Noica, Eugen Ionescu, Emil Cioran. Le seul ouvrage écrit et publié par lui-même c’est sa thèse de doctorat sur la relation entre la logique et les mathématiques, défendue à Göttingen et à Munchen. Ce professeur aimait le journalisme et les sorties en scènes publiques plutôt que le silence de la table à écrire. En conséquence, nous pouvons aujourd’hui consulter ses écrits (un cours de logique et un cours de métaphysique) et connaître sa pensée, grâce au laborieux travail sténographique de ses étudiants loyaux
L'extension d'une formule de cubature
No full textIonescu D. V. L'extension d'une formule de cubature. In: Bulletin de la Classe des sciences, tome 56, 1970. pp. 661-690
Maximilian (Constantin), Ionescu (Barbu). — Citogenetica medicala umana.
No full textFerembach D. Maximilian (Constantin), Ionescu (Barbu). — Citogenetica medicala umana.. In: Bulletins et Mémoires de la Société d'anthropologie de Paris, XIII° Série. Tome 5 fascicule 4, 1978. p. 341
On manifolds of small degree
No full textThe main result of this paper gives a complete classification of complex smooth projective varieties X⊂Pn which are nondegenerate, linearly normal and of degree d≤n. Nondegenerate means that X is not contained in a hyperplane of Pn, and linearly normal means that the map H0(Pn,OPn(1))→H0(X,OX(1)) is surjective. The adjunction mapping plays a key role in the proof, which also relies on previous results by the author [Math. Ann. 271 (1985), no. 3, 339--348; MR0787185 (86j:14031)]. The classification has some interesting consequences. For example, X as above must be either rational or Fano, and, in particular, it is always simply connected
Maximilian (Constantin), Ionescu (Barbu). — Citogenetica medicala umana.
No full textFerembach D. Maximilian (Constantin), Ionescu (Barbu). — Citogenetica medicala umana.. In: Bulletins et Mémoires de la Société d'anthropologie de Paris, XIII° Série. Tome 5 fascicule 4, 1978. p. 341
Unusual 25-year durability of an Ionescu-Shiley pericardial bioprosthesis
No full textIonescu-Shiley valve was withdrawn from clinical use in 1987 for its early structural failure after implantation. This was due to valve design rather than the natural properties of bovine pericardium itself. We describe the unexpected 25-year survival of an Ionescu-Shiley bioprosthesis in the mitral and tricuspid positions, implanted to treat endomyocardial fibrosis. This report makes 2 important points: (1) pannus overgrowth may be a favorable determinant of the durability of xenografts, and (2) bovine pericardial valves may have excellent hemodynamic performance and tissue durability for more than 20 years in the mitral position even in young patients. © 2011 The Society of Thoracic Surgeons
RATIONALITY PROPERTIES OF MANIFOLDS CONTAINING QUASI-LINES
No full textLet X be a complex, rationally connected, projective manifold. We show that X admits a modification X that contains a quasi-line, i.e. a smooth rational curve whose normal bundle is a direct sum of copies of script capital O signP1 (1). For manifolds containing quasi-lines, a sufficient condition of rationality is exploited: there is a unique quasi-line from a given family passing through two general points. We define a numerical birational invariant, e(X), and prove that X is rational if and only if e(X) = 1. If X is rational, there is a modification X which is strongly-rational, i.e. contains an open subset isomorphic to an open subset of the projective space whose complement is at least 2-codimensional. We prove that strongly-rational varieties are stable under smooth, small deformations. The argument is based on a convenient characterization of these varieties. Finally, we relate the previous results and formal geometry. This relies on ẽ(X, Y), a numerical invariant of a given quasi-line Y that depends only on the formal completion X̂Y. As applications we show various instances in which X is determined by X̂Y. We also formulate a basic question about the birational invariance of ẽ(X, Y)
Fig. 2 in Observation Of Eurasian Otter'S Diel Activity Using Camera Trapping In Central-Eastern Romania
No full textFig. 2. General diel activity of otters in the study area.Published as part of Bouroş, G., Ionescu, D. T. & Hodor, C., 2019, Observation Of Eurasian Otter'S Diel Activity Using Camera Trapping In Central-Eastern Romania, pp. 47-56 in Vestnik Zoologii 53 (1) on page 51, DOI: 10.2478/vzoo-2019-0005, http://zenodo.org/record/645508
Embedding Monte Carlo simulation within the stochastic Petri network formalism for the evaluation of the availability of a nuclear safety system
No full text- …
