1,673 research outputs found
EXACT SOLUTION OF CLASSICAL AND QUANTAL ONE-DIMENSIONAL MANY-BODY PROBLEMS WITH 2-BODY POTENTIAL VA(X)=G2A2-SINH2(AX)
No full textExact solution of the quantum Calogero-Gaudin system and of its q deformation RID A-7283-2010
No full textA complete set of commuting observables for the Calogero-Gaudin system is diagonalized, and the explicit form of the corresponding eigenvalues and eigenfunctions is derived. We use a purely algebraic procedure exploiting the coalgebra invariance of the model; with the proper technical modifications this procedure can be applied to the q-deformed version of the model, which is then also exactly solved. (C) 2000 American Institute of Physics. [S0022- 2488(00)03910-4]
El derecho nacional del Reino Unido y el derecho comunitario e internacional. Una relación cada vez más tensa
No full textThis chapter in Spanish based on research carried and published in 2014, proposes to examine how international and, most of all, supranational European law and human rights jurisprudence becomes part of the law of the United Kingdom and to consider the implications for the British legal system. This will be done mainly from a legal and judicial perspective, but without ignoring the political one. Indeed, it would be highly problematic to address this theme without taking into account the growing tensions between the Cameron Government and the European Courts, in particular the court in Strasbourg. The chapter will begin by illustrating the legal mechanisms that are employed in the reception of international and supranational European law and the role played by the national and subnational parliaments and governments and then it will examine the relationship between the national courts and the supranational courts in Europe. The final part of this contribution will focus on the rising tensions over the past year between the Cameron Government, on one hand, and the European Union and, in particular, the Council of Europe: indeed one could argue that 2013 was an annus horribilis with regard to the relations between Britain and Europe
Computational Analysis of the Active Control of Incompressible Airfoil Flutter Vibration Using a Piezoelectric V-Stack Actuator
No full textThe flutter phenomenon is a potentially destructive aeroelastic vibration studied for the
design of aircraft structures as it limits the flight envelope of the aircraft. The aim of this work is to
propose a heuristic design of a piezoelectric actuator-based controller for flutter vibration suppression
in order to extend the allowable speed range of the structure. Based on the numerical model of a three
degrees of freedom (3DOF) airfoil and taking into account the FEM model of a V-stack piezoelectric
actuator, a filtered PID controller is tuned using the population decline swarm optimizer PDSO
algorithm, and gain scheduling (GS) of the controller parameters is used to make the control adaptive
in velocity. Numerical simulations are discussed to study the performance of the controller in the
presence of external disturbances
An isochronous variant of the Ruijsenaars-Toda model: equilibrium configurations, behavior in their neighborhood, Diophantine relations
No full textAn isochronous variant of the Ruijsenaars-Toda integrable many-body problem is introduced, an equilibrium configuration of this dynamical system is identified and by investigating the motions in its neighborhood Diophantine relations are obtained
Le prime imprese del conte Orlando /
No full textSignatures: *⁸ A-M⁸ N¹⁰.Giolitto's device on t.p. (phoenix). Port. of the author within architectural border incorporating coats of arms, *8v. Each of the 25 cantos is preceded by an "argomento" in verse, an "allegoria" in prose, and a woodcut ill. (repeats). The "argomenti" and the ill. appear within elaborate decorative borders. Two of the border elements depict cities and include the initial P. Head and tail pieces, historiated and foliated initials, fleurons.Mode of access: Internet.At upper left-hand corner of front pastedown is calligraphic label of Theodore Besterman, signed with the initials P.S.Binding: calf mottled red and brown, rebacked and repaired. Triple gilt fillets along edges of boards. Spine title in gilt: DOLCE / ORLANDO. Page edges blue
Quantum versus classical integrability in Ruijsenaars-Schneider systems
No full textThe relationship (resemblance and/or contrast) between quantum and classical integrability in Ruijsenaars-Schneider systems, which are one-parameter deformations of Calogero-Moser systems, is addressed. Many remarkable properties of classical Calogero and Sutherland systems (based on any root system) at equilibrium are reported in a previous paper (Corrigan-Sasaki). For example, the minimum energies, frequencies of small oscillations and the eigenvalues of Lax pair matrices at equilibrium are all 'integer valued'. In this paper we report that similar features and results hold for the Ruijsenaars-Schneider type of integrable systems based on the classical root systems
MRI Insights in Breast Imaging
No full textIn the world, breast cancer is the most commonly diagnosed cancer among women. Currently, MRI is the most sensitive breast imaging method for detecting breast cancer, although false positive rates are still an issue. To date, the accuracy of breast MRI is widely recognized across various clinical scenarios, in particular, staging of known cancer, screening for breast cancer in high-risk women, and evaluation of response to neoadjuvant chemotherapy. Since technical development and further clinical indications have expanded over recent years, dedicated breast radiologists need to constantly update their knowledge and expertise to remain confident and maintain high levels of diagnostic performance in breast MRI. This review aims to detail current and future applications of breast MRI, from technological requirements and advances to new multiparametric and abbreviated protocols, and ultrafast imaging, as well as current and future indications
Further amendments to the Italian Constitution?
No full textIn an edited book devoted to the Italian General Election of 2006, this chapter addresses the constitutional amendment approved by the outgoing centre-right majority in 2005 that will be put to a referendum on 25-26 June 2006. In particular, the author poses the question of whether, due to the heterogeneity of the reform this proposed amendment could be considered unconstitutional according to a well known doctrine developed in the field of comparative constitutional law in particular by Rosalind Dixon and David Landau
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