Results 31 to 40 of about 959,671 (288)

Computer-Aided Derivation of Multi-scale Models: A Rewriting Framework

, 2013
We introduce a framework for computer-aided derivation of multi-scale models. It relies on a combination of an asymptotic method used in the field of partial differential equations with term rewriting techniques coming from computer science.
Belkhir, Walid, Lenczner, Michel, Yang, Bin   +2 more
core   +2 more sources

The interior structure of rotating black holes 1. Concise derivation [PDF]

, 2012
This paper presents a concise derivation of a new set of solutions for the interior structure of accreting, rotating black holes. The solutions are conformally stationary, axisymmetric, and conformally separable.
Andrew J. S. Hamilton, Andrew J. S. Hamilton, Andrew J. S. Hamilton, Brandon Carter, Gavin Polhemus, Lior M. Burko, Roger Penrose, Subrahmanyan Chandrasekhar   +7 more
core   +1 more source

New coordinates for a simpler canonical derivation of the Hawking effect

European Physical Journal C: Particles and Fields, 2020
In order to achieve a Hamiltonian-based canonical derivation of the Hawking effect, one usually faces multiple hurdles. Firstly, the spacetime foliation using Schwarzschild time does not lead to hyper-surfaces which are always spacelike.
Golam Mortuza Hossain, Chiranjeeb Singha
doaj   +1 more source

Development of a new score for early mortality prediction in trauma ICU patients: RETRASCORE

Critical Care, 2021
Background Severity scores are commonly used for outcome adjustment and benchmarking of trauma care provided. No specific models performed only with critically ill patients are available.
Luis Serviá, Juan Antonio Llompart-Pou, Mario Chico-Fernández, Neus Montserrat, Mariona Badia, Jesús Abelardo Barea-Mendoza, María Ángeles Ballesteros-Sanz, Javier Trujillano, the Neurointensive Care and Trauma Working Group of the Spanish Society of Intensive Care Medicine (SEMICYUC)   +8 more
doaj   +1 more source

Optimal unambiguous filtering of a quantum state: An instance in mixed state discrimination

, 2005
Deterministic discrimination of nonorthogonal states is forbidden by quantum measurement theory. However, if we do not want to succeed all the time, i.e.
J. A. Bergou, János A. Bergou, K. Kraus, M. A. Neumark, M. A. Nielsen, Mark Hillery, Ulrike Herzog   +6 more
core   +1 more source

The Derivation of Efficient Sets [PDF]

The Journal of Financial and Quantitative Analysis, 1976
In 1952, Harry M. Markowitz [6] described a theory on the selection of assets in forming a portfolio. Assuming asset returns are stochastic, his theory postulated that rational investors should select a portfolio from the set of all portfolios which offered minimum risk (measured by variance) for varying levels of expected return.
openaire   +1 more source

2-local triple derivations on von Neumann algebras [PDF]

, 2014
We prove that every {\rm(}not necessarily linear nor continuous{\rm)} 2-local triple derivation on a von Neumann algebra $M$ is a triple derivation, equivalently, the set Der$_{t} (M)$, of all triple derivations on $M,$ is algebraically 2-reflexive in ...
Kudaybergenov, Karimbergen, Oikhberg, Timur, Peralta, Antonio M., Russo, Bernard   +3 more
core  

Minimum L1-distance projection onto the boundary of a convex set: Simple characterization

, 2006
We show that the minimum distance projection in the L1-norm from an interior point onto the boundary of a convex set is achieved by a single, unidimensional projection.
H. J. H. Tuenter, R. T. Rockafellar, W. Briec   +2 more
core   +1 more source

Why and When Are Evidence‐Based Interventions Adopted in Paediatric Supportive Care? A Qualitative Exploration of the Determinants of Photobiomodulation Implementation

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Oral mucositis is a common and debilitating side effect of childhood cancer and stem cell transplant treatments. It affects the quality of life of children and young people (CYP) and places a strain on services. Photobiomodulation is recommended for oral mucositis prevention in international guidance but is poorly implemented in UK ...
Claudia Heggie, Kara A. Gray‐Burrows, Peter F. Day, Bob Phillips, Carl A. Thompson   +4 more
wiley   +1 more source

Some conditions under which Jordan derivations are zero

Journal of Taibah University for Science, 2017
In the current article, we obtain the following results: Let A be an algebra and P be a semi-prime ideal of A. Suppose that d:A→(A/P) is a Jordan derivation such that dim{d(a)|a∈A}≤1. If d(P)={0}, then d is zero.
Z. Jokar, A. Hosseini, A. Niknam
doaj   +1 more source