Search results for "exceptional"
showing 10 items of 32 documents
A tribute to Juan Rosai
2021
On July 7, 2020 the world of Surgical Pathology lost one of the brightest minds ever: Prof. Juan Rosai.It certainly happened to many of us while approaching a difficult case to exclaim: - This is a case for Juan Rosai! This simple expression synthesizes the legend that was created around him.Those who knew him personally were undoubtedly amazed by his diagnostic insight, exceptional memory and organizational skills.However, his vast culture and passions were not limited to medicine, but ranged to music, literature and the world of sports, especially football.We worked with him in his last years of activity and want to share with the communities of pathologists our warm feelings about this …
Non-Hermitian Physics and Master Equations
2022
A longstanding tool to characterize the evolution of open Markovian quantum systems is the GKSL (Gorini-Kossakowski-Sudarshan-Lindblad) master equation. However, in some cases, open quantum systems can be effectively described with non-Hermitian Hamiltonians, which have attracted great interest in the last twenty years due to a number of unconventional properties, such as the appearance of exceptional points. Here, we present a short review of these two different approaches aiming in particular to highlight their relation and illustrate different ways of connecting non-Hermitian Hamiltonian to a GKSL master equation for the full density matrix.
Optical force rectifiers based on PT-symmetric metasurfaces
2018
We introduce here the concept of optical force rectifier based on parity-time symmetric metasurfaces. Directly linked to the properties of non-Hermitian systems engineered by balanced loss and gain constituents, we show that light can exert asymmetric pulling or pushing forces on metasurfaces depending on the direction of the impinging light. This generates a complete force rectification in the vicinity of the exceptional point. Our findings have the potential to spark the design of applications in optical manipulation where the forces, strictly speaking, act unidirectionally. R.A. and B.G. would like to acknowledge financial support from the Max Planck Society. J.C. acknowledges the suppor…
Parte III. Cap. IX. I Fattori della produzione agricola.
2021
The process of modernization and innovation in the agricultural sector requires careful analysis regarding financial resources and the need to strengthen economic structures within it. The specific discipline of agricultural credit is different from that provided for other productive activities. The "naturalness" of the agricultural product is reflected in the incidence of credit risk. These economic evaluations, which are at the basis of what is known as agricultural exceptionalism, have repercussions on the legal system of access to credit, requiring, for example, a differentiated system of evaluation of creditworthiness.
‘Human rights and democracy are not self-evident’ : Finnish student teachers’ perceptions on democracy and human rights education
2021
This article discusses democracy and human rights education (DHRE) in Finnish teacher education, drawing on existing literature, curricula and a survey of student teachers’ perceptions. Earlier studies suggested that DHRE in Finnish teacher education is unsystematic, implicit, and dependent on the teacher’s individual interests. These studies highlight a sense of national exceptionalism, where DHRE is assumed to be self-evident. In 2019, we conducted a survey of student teachers (n=300) in one university. Data content analysis reveals that student teachers now see DHRE as relevant and timely, and by no means self-evident. Student teachers believe that DHRE needs to be explicit and part of t…
Un mondo senza confini, un potere senza limiti. Temi e retoriche identitarie dell’«eccezionalismo» ateniese
2022
Partendo dalla categoria politica di “eccezionalismo”, che è stata utilizzata per descrivere la politica estera degli Stati Uniti, soprattutto nel XX secolo, questo paper propone una analisi comparata con la politica ateniese di V secolo, soprattutto durante il suo impero marittimo: in tale contesto la nozione di “eccezionalismo” sembra adatta per comprendere alcuni aspetti della sua politica e i rapporti tra “eccezionalismo” e democrazia. Starting with the political category of 'exceptionalism', which has been used to describe US foreign policy, especially in the 20th century, this paper proposes a comparative analysis with 5th century Athenian policy, especially during its maritime empire…
The exceptionality of space-time symetries
2009
Principios rectores en la adopción de diligencias limitativas de los derechos reconocidos en el art. 18 ce
2021
Criminal Procedure Law reform carried out in 2015 requires, in order to adopt the investigation proceedings that limit the rights recognized by art. 18 Spanish Constitution, to respect the guiding principles of specialty, suitability, exceptionality, necessity and proportionality. This article aims, departing from the legal text and considering existing jurisprudence, to unveil the true meaning of these principles.
Population Properties of Compact Objects from the Second LIGO-Virgo Gravitational-Wave Transient Catalog
2021
Abbott, R., et al. (LIGO and Virgo Collaboration)