Search results for "Coherence"
showing 10 items of 905 documents
Infracyanine Green vs. Brilliant Blue G in Inverted Flap Surgery for Large Macular Holes: A Long-Term Swept-Source OCT Analysis
2020
Background and Objectives: To compare the long-term toxicity of infracyanine green (IFCG) to brilliant blue G (BBG) in inverted internal limiting membrane flap surgery (I-ILMFS) for large, full-thickness macular holes (FTMHs). Materials and Methods: Prospective randomized study including 39 eyes with &ge
Identifying the patient subset with highest inflammation levels in acute coronary syndromes
2019
Coherence absorption and condensation induced by thermalization of incoherent nonlinear fields
2008
We show that a conservative system of incoherent nonlinear waves exhibits, as a rule, an irreversible process of coherence transfer, in which the incoherence of the system is absorbed by the small-amplitude field, thus allowing the high-amplitude field to evolve towards a highly condensed coherent state. This process of coherence absorption results from the natural thermalization of the fields to a thermodynamic equilibrium state. The theory reveals that, contrary to a classical gas system, a wave system does not satisfy an equipartition of energy among the particles. Such a distinctive feature is the key property underlying the existence of the coherence absorption process. The coherence a…
Optimal control of quantum superpositions in a bosonic Josephson junction
2012
We show how to optimally control the creation of quantum superpositions in a bosonic Josephson junction within the two-site Bose-Hubbard model framework. Both geometric and purely numerical optimal control approaches are used, the former providing a generalization of the proposal of Micheli et al [Phys. Rev. A 67, 013607 (2003)]. While this method is shown not to lead to significant improvements in terms of time of formation and fidelity of the superposition, a numerical optimal control approach appears more promising, as it allows to create an almost perfect superposition, within a time short compared to other existing protocols. We analyze the robustness of the optimal solution against at…
Incoherent solitons and condensation processes
2006
International audience; We study the nonlinear interaction of partially incoherent nonlinear optical waves. We show that, in spite of the incoherence of the waves, coherent phase effects may play a relevant role during the propagation, in contrast with the usual wave turbulence description of the interaction. These nonlinear phase effects may lead the system to unexpected processes of self-organization, such as condensation, or incoherent soliton generation in instantaneous response nonlinear media. Such self-organization processes may be characterized by a reduction of the non-equilibrium entropy, which violates the Boltzmann's H-theorem of entropy growth inherent to the wave turbulence th…
Kolmen etnisen ryhmän kotoutumisprosessi Suomessa
2010
Molecular spin qubits based on lanthanide ions encapsulated in cubic polyoxopalladates: design criteria to enhance quantum coherence
2015
The family of cubic polyoxopalladates encapsulating lanthanide ions [LnPd12(AsPh)8O32]5− where Ln = Tb, Dy, Ho, Er and Tm, is magnetically characterised and theoretically described by the Radial Effective Charge (REC) model and a phenomenological crystal-field approach using the full-hamiltonian, in the SIMPRE and CONDON packages respectively. The lack of anisotropy generates an extraordinarily rich energy level structure at low temperatures, which allows us to study how such a structure is affected by lifting the strict cubic symmetry and/or by applying an external magnetic field. In particular, we will explore the possibility of using these cubic Ln complexes as spin-qubits. We will focus…
Yellow (577 nm) micropulse laser versus half-dose verteporfin photodynamic therapy in eyes with chronic central serous chorioretinopathy: results of …
2018
PurposeTo compare the functional and anatomical outcomes of eyes with chronic central serous chorioretinopathy treated with yellow micropulse (MP) laser versus half-dose verteporfin photodynamic therapy (PDT).MethodsThis is a multicentre, retrospective comparative study of 92 eyes treated with yellow MP laser (duty cycle of 5%, zero spacing between spots, spot size varied from 100 to 200 µm, power varied from 320 to 660 mW, and the pulse burst duration was 200 ms) and 67 eyes treated with PDT (half-dose verteporfin (3 mg/m2) infused over 10 min), followed by laser activation for 83 s. Spot sizes varied from 400 to 2000 µm.ResultsIn the MP group, at 12 months of follow-up, the mean best corr…
Nozīmes veidošana lietišķajos rakstos
2017
Šajā pētījumā analizēta nozīmes veidošana laikraksta ‘The Economist’ ievadrakstu virsrakstos, apakšvirsrakstos un ievados, kā arī laikraksta ‘The Financial Times’ titulrakstu virsrakstos un apakšvirsrakstos. Pētījuma mērķis bija analizēt nozīmes veidošanu, pētot teikumu un vārdkopu aspektu, situācijas veidu un funkcionālo koherenci. Lai to sasniegtu, tika analizēti 15 laikraksta ‘The Economist’ rakstu virsraksti, apakšvirsraksti un ievadi, kā arī 13 laikraksta ‘The Financial Times’ rakstu virsraksti un apakšvirsraksti. Izmantojot Komrija (1976), Smitas (1991) un Van Dijka (1988) atziņas, pētījumā secināts, ka laikraksta ‘The Economist’ rakstu pirmie elementi ir savstarpēji saistīti ar funkc…
On "Coherence" and "Law": An Analysis of Different Models
2001
The aim of this paper is to compare different conceptions of the role of (normative) coherence in the legal field. More precisely, it aims to deepen Neil MacCormick's theory of legal reasoning, in which coherence is essentially considered an interpretative tool, and Ronald Dworkin's legal theory, in which coherence occupies a more crucial place. The main results of this paper can be summarized in two points. A) For Dworkin, coherence is not just an interpretative standard but constitutes the hard core of his theory of law. B) As a consequence of A, Dworkin's reflections on coherence (as an interpretative standard) cannot be separated from his theory of law grounded on the concept of integri…