Results 11 to 20 of about 1,892,548 (284)
Changing quantum reference frames [PDF]
, 2014 We consider the process of changing reference frames in the case where the reference frames are quantum systems. We find that, as part of this process, decoherence is necessarily induced on any quantum system described relative to these frames.
Bartlett, Stephen D. +2 more
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Journal of Physics A: Mathematical and Theoretical, 2011 Loosely speaking, a semi-frame is a generalized frame for which one of the frame bounds is absent. More precisely, given a total sequence in a Hilbert space, we speak of an upper (resp. lower) semi-frame if only the upper (resp. lower) frame bound is valid.
Antoine, Jean-Pierre, Balazs, Peter
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Frame Construction and Frame Promotion (Strategic Framing Choices) [PDF]
American Behavioral Scientist, 2012 In this article, the authors discuss the three most important strategic framing choices by political actors (“substantive emphasis choice,” “oppositional emphasis choice,” and “contest emphasis choice”) of direct-democratic campaigns. The authors investigate these strategic framing choices in the media input and look at how the political actors change
Hänggli, R., Kriesi, H.
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Every Hilbert space frame has a Naimark complement [PDF]
, 2002 Naimark complements for Hilbert space Parseval frames are one of the most fundamental and useful results in the field of frame theory. We will show that actually all Hilbert space frames have Naimark complements which possess all the usual properties for
Casazza, Peter G. +4 more
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Paired Accelerated Frames [PDF]
, 1996 The geometrical and quantum mechanical basis for Davies' and Unruh's acceleration temperature is traced to a type of quantum mechanical (``achronal'') spin. Its existence and definition are based on pairs of causally disjoint accelerated frames.
Gerlach, Ulrich H.
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, 2011 Frames have established themselves as a means to derive redundant, yet stable decompositions of a signal for analysis or transmission, while also promoting sparse expansions.
Casazza, Peter G. +3 more
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Frames, semi-frames, and Hilbert scales
, 2012 Given a total sequence in a Hilbert space, we speak of an upper (resp. lower) semi-frame if only the upper (resp. lower) frame bound is valid. Equivalently, for an upper semi-frame, the frame operator is bounded, but has an unbounded inverse, whereas a ...
Antoine, J-P., Balazs, P.
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, 2014 In this paper a new concept related to the frame theory is introduced; the notion of pair frame. By investigating some properties of such frames, it is shown that pair frames are a generalization of ordinary frames. Some classes of of them are introduced
Fereydooni, Abolhassan, Safapour, Ahmad
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Nurses are central to cancer care for children and adolescents, yet no comprehensive synthesis has defined essential core competencies for pediatric oncology nursing (PON) practice internationally, particularly in Latin America and the Caribbean (LAC).
Luís Carlos Lopes‐Júnior +7 more
wiley +1 more source
, 2012 Finite frame theory has a number of real-world applications. In applications like sparse signal processing, data transmission with robustness to erasures, and reconstruction without phase, there is a pressing need for deterministic constructions of ...
Alexeev, Boris +2 more
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