40,106 research outputs found
Bell, G R, NX9522
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/371183Surname: BELL
Given Name(s) or Initials: G R
Military Service Number or Last Known Location: NX9522
Missing, Wounded and Prisoner of War Enquiry Card Index Number: 5798181677
Item: [2016.0049.03510] "Bell, G R, NX9522
R-Bell Numbers for Graphs
No full textThe r-Bell number B^r(G) of a simple labeled graph G is the number of partitions
of its vertex set whose blocks are independent sets of G where the first r-vertices
are in different blocks. The number of these partitions with k blocks is the
(graphical) r- Stirling number S^r(G; k) of G. On this particular paper we will
investigate the integer sequence of r-Bell numbers for different kinds of graphs
The bell numbers and r-fold transitivity
No full textAbstractLet G be a permutation group of order |;G| acting on a set of n elements. For g ϵ G, let θ(g) be the number of elements left fixed by g. Then, for 1 ⩽ r ⩽ n, ∑gϵ(θ(g))r ⩽ Xr|G| with equality if and only if G is r-fold transitive. Here, Xr is the r-th Bell number
Experimental Study of Dual Bell Nozzles
No full textAn experimental study was conducted testing Dual-bell nozzles in various conditions at DLR’s cold gas test stand. The stability of the nozzle flow has been verified by measuring the pressure ratio values by flow transition and retransition, to ensure a hysteresis between the two operation modes. The transition duration and the velocity of the transition front in the nozzle extension were calculated using pressure measurement and Schlieren optics to demonstrate the feasibility of the Dual-Bell concept
A stronger Bell argument for quantum non-locality
No full textIt is widely accepted that the violation of Bell inequalities excludes local theories of the quantum realm. In this paper I present a stronger Bell argument which even forbids certain non-local theories. The remaining non-local theories, which can violate Bell inequalities, are characterised by the fact that at least one of the outcomes in some sense probabilistically depends both on its distant as well as on its local parameter. While this is not to say that parameter dependence in the usual sense necessarily holds, it shows that the received analysis of quantum non-locality as “outcome dependence or parameter dependence” is deeply misleading about what the violation of Bell inequalities implies
Sir R. CrosS, Statutory interpretation, 2e éd., par J. Bell et Sir G. Engle
No full textSir R. CrosS, Statutory interpretation, 2e éd., par J. Bell et Sir G. Engle. In: Revue internationale de droit comparé. Vol. 39 N°4, Octobre-décembre 1987. pp. 998-999
The Altitude Adaptive Dual Bell Nozzle
No full textThe dual bell nozzle has been found out to be one of the most promising concepts for alti-tude adaption of the nozzle jet. The wall contour inflection linking the base nozzle with the ex-tension provides two stable operating modes, circumventing the area ratio limitation inherent to conventional main stage engine nozzles. During the past decade, numerous experimental as well as analytical investigations have been conducted at the German Aerospace Center for a better understanding and the qualification of the dual bell concept for main stage engine application. Cold and hot flow tests aimed to point out the influence of the geometrical parameters on the flow behavior. The conditions for the transition from sea level to altitude mode and back, the hysteresis between these values, the duration of the transition and the resulting side load genera-tion were of particular interest. The contour optimization results in a trade-off between the tran-sition duration, stability and side load amplitude, all depending on the extension length. Out of the experimental work, it was possible to define the parameters for realistic dual bell nozzle geometries and to conduct an analytical study of the nozzle behavior during ascent of a parallel staged heavy launcher. The additional loss in sea level, the so-called drag effect, was evaluated for the chosen nozzle using DLR’s CFD in-house code Tau. The present paper gives an over-view on current experimental and analytical dual bell research activities
Sir R. CrosS, Statutory interpretation, 2e éd., par J. Bell et Sir G. Engle
No full textSir R. CrosS, Statutory interpretation, 2e éd., par J. Bell et Sir G. Engle. In: Revue internationale de droit comparé. Vol. 39 N°4, Octobre-décembre 1987. pp. 998-999
Bell on Bell's theorem: The changing face of nonlocality
No full textBetween 1964 and 1990, the notion of nonlocality in Bell's papers underwent a profound change as his nonlocality theorem gradually became detached from quantum mechanics, and referred to wider probabilistic theories involving correlations between separated beables. The proposition that standard quantum mechanics is itself nonlocal (more precisely, that it violates `local causality') became divorced from the Bell theorem per se from 1976 on, although this important point is widely overlooked in the literature. In 1990, the year of his death, Bell would express serious misgivings about the mathematical form of the local causality condition, and leave ill-defined the issue of the consistency between special relativity and violation of the Bell-type inequality. In our view, the significance of the Bell theorem, both in its deterministic and stochastic forms, can only be fully understood by taking into account the fact that a fully Lorentz-covariant version of quantum theory, free of action-at-a-distance, can be articulated in the Everett interpretation
H. Chenery, M. S. Ahluwalia, C. L. G. Bell, J. H. Duloy et R. Jolly, Redistribution with growth
No full textÉtienne Gilbert. H. Chenery, M. S. Ahluwalia, C. L. G. Bell, J. H. Duloy et R. Jolly, Redistribution with growth. In: Tiers-Monde, tome 16, n°64, 1975. p. 883
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