Search results for "Metro"

Rappresentare la Post-metropoli. La Sicilia Sud-Orientale oltre gli stereotipi massmediatici.

Recensione di I territori marginali e la quarta rivoluzione urbana. Il caso della Gallura

2019

La recensione commenta un volume che presenta i risultati di un'unità di ricerca loacale, quella dell'Università di Sassari-Alghero, nel quadro di una ricerca PRIN nazionale sul tema della Postmetropoli che ha visto come capofila il Politecnico di Milano. Il volume fa parte di una serie di altri volumi, curati da altre sedi locali, che nell'insieme restituiscono i risultati della ricerca. The review discusses on a book that presents the results of a loacal research unit,in the University of Sassari-Alghero, as part of a national PRIN research on the theme of the Postmetropolis, as Soja wrotes, with the Polytechnic of Milan as the leader. The volume is part of a series of volumes, edited by …

Práctica 1 (sesión2). Reconocimiento de los distintos tipos de lentes oftálmicas. Centrado y marcado. Prismas.

2018

Reconocimiento de los distintos tipos de lentes oftálmicas. Centrado y marcado. Prismas.

Approaches to evaluate the virtual instrumentation measurement uncertainties

2002

This paper deals with the metrological characterization of virtual instruments. After a brief description of the features, the components and the working principle of the virtual instruments and the various uncertainty sources are analyzed. Then, two methods to evaluate the uncertainty of the measurement results are presented: a numerical method simulating the physical process of the A/D conversion, and an approximated theoretical method applying the "uncertainty propagation law" of the "guide to the expression of uncertainty in measurement." With both methods, the combined standard uncertainty of the measurement result is obtained, starting from the standard uncertainty generated by each s…

Governance in the metropolitan area of Valencia (Spain): an unfinished business

2023

Metropolitan government is still an unfinished business in Spain. An example of this is the metropolitan area of Valencia. The aim of this article is to learn about the process that has led to the current situation of a lack of metropolitan government and to propose actions that will help to make it a reality in the not-too-distant future. To this end, it analyses the history and the current regulations, and it is completed with the opinions and contributions of academics and politicians. The result is that, although there is no political will to include the consolidation of a metropolitan government in Valencia in the current political agenda, it is possible to set in motion initiatives of…

Arritmias y Riesgo Cardiovascular: Diseño, Control e Investigación de una aplicación para dispositivos móviles

2017

Resumen Las Enfermedades Cardiovasculares son la principal causa de muerte en todo el mundo. Según datos de la Federación Mundial del Corazón, las enfermedades cardiovasculares y los infartos causan 17,5 millones de muertes al año, tantas como el resultado de sumar las provocadas por el SIDA, la tuberculosis, la malaria, la diabetes, el cáncer y las patologías respiratorias crónicas. La fibrilación auricular es la arritmia sostenida más frecuente. Debido a sus consecuencias clínicas potencialmente graves (insuficiencia cardiaca, embolias y deterioro cognitivo), tiene importantes implicaciones socioeconómicas y sanitarias. En el momento existe un pensamiento generalizado sobre la importancia…

Generalized Geometric Quantum Speed Limits

2016

The attempt to gain a theoretical understanding of the concept of time in quantum mechanics has triggered significant progress towards the search for faster and more efficient quantum technologies. One of such advances consists in the interpretation of the time-energy uncertainty relations as lower bounds for the minimal evolution time between two distinguishable states of a quantum system, also known as quantum speed limits. We investigate how the non uniqueness of a bona fide measure of distinguishability defined on the quantum state space affects the quantum speed limits and can be exploited in order to derive improved bounds. Specifically, we establish an infinite family of quantum spee…

Hilbert–Schmidt speed as an efficient figure of merit for quantum estimation of phase encoded into the initial state of open n-qubit systems

2021

AbstractHilbert–Schmidt speed (HSS) is a special type of quantum statistical speed which is easily computable, since it does not require diagonalization of the system state. We find that, when both HSS and quantum Fisher information (QFI) are calculated with respect to the phase parameter encoded into the initial state of an n-qubit register, the zeros of the HSS dynamics are actually equal to those of the QFI dynamics. Moreover, the signs of the time-derivatives of both HSS and QFI exactly coincide. These findings, obtained via a thorough investigation of several paradigmatic open quantum systems, show that HSS and QFI exhibit the same qualitative time evolution. Therefore, HSS reveals its…

Erratum: On quantumness in multi-parameter quantum estimation (Journal of Statistical Mechanics: Theory and Experiment (2019 (094010) DOI: 10.1088/17…

2020

In equation (12), there is a small error in the definition of the Holevo Cramér Rao Bound, which should be written (for the notation see the original article.(Equation Presented).where the second term was written as WImZ 1, in the original article. All the remaining results are unchanged. The bounds in equation (15) are still correct, but need further clarifications.clarifications. Indeed equation (15) is justified by the following chain of inequalities.(Equation Presented).

Geometry of quantum phase transitions

2020

In this article we provide a review of geometrical methods employed in the analysis of quantum phase transitions and non-equilibrium dissipative phase transitions. After a pedagogical introduction to geometric phases and geometric information in the characterisation of quantum phase transitions, we describe recent developments of geometrical approaches based on mixed-state generalisation of the Berry-phase, i.e. the Uhlmann geometric phase, for the investigation of non-equilibrium steady-state quantum phase transitions (NESS-QPTs ). Equilibrium phase transitions fall invariably into two markedly non-overlapping categories: classical phase transitions and quantum phase transitions, whereas i…