Search results for " Opera"
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A scoping review on how physical fitness is evaluated in sitting volleyball players
2023
Introduction: Sitting volleyball is a widely practiced paralympic sport. A correct and standardized physical evaluation helps coaches to plan and manage the training. It is also important to evaluate physical fitness accurately and adopt standardized protocols to compare and normalize the data. The aim of the study was to evaluate physical fitness evaluation methods adopted in sitting volleyball and to eventually propose standard operating procedures. Evidence acquisition: English-written and peer-reviewed original articles were included in this review. The population studied was composed only of athletes practicing sitting volleyball. Articles were searched on the electronic databases PubM…
Elektroniczny system przeprowadzania egzaminu zawodowego
2017
Rosnąca rola nowych technologii spowodowała zmiany w sposobie przeprowadzania egzaminu zawodowego. Jedną z nich jest możliwość przeprowadzania egzaminu teoretycznego w wersji elektronicznej. W opracowaniu przedstawione zostały procedury związane z tą formą zewnętrznego oceniania uczestników kształcenia zawodowego. Zamieszczone zostały również dane statystyczne obrazujące odsetek szkół korzystających z tego rozwiązania.
Sorveglianza dinamica e regime aperto. Cambiamenti normativi, organizzativi e psicosociali
2017
La condanna che la Corte Europea dei Diritti Umani (2013) ha inflitto all'Italia alla luce della sentenza Torreggiani che puntava l'indice sul trattamento inumano e sul sovraffollamento degli istituti penali, ha imposto al nostro Paese repentini cambiamenti nell'assetto organizzativo che hanno, chiaramente, influenzato la quotidianità sia dei ristretti sia degli operatori penitenziari. A questi ultimi è chiesto, infatti, un impegno nella sperimentazione della gestione di nuovi spazi e di un nuovo modus operandi che va a modificare il modo di relazionarsi con l’utente e con il gruppo di lavoro, esaltando le rispettive potenzialità professionali. Ai ristretti, ancora, è riconosciuta la possib…
Modeling epidemics through ladder operators
2020
Highlights • We propose an operatorial model to describe epidemics. • The model describes well the asymptotic numbers of the epidemics. • Ladder operators are used to model exchanges between the “actors” of the system.
Great expectations: Learning the boundaries of design rights
2019
We present a case study of an increase in design right filings and concurrent design right litigations in an industry that previously had little experience of design right protection. The motives for and outcomes of filing, and how these changed over time are discussed. We go on to explore the events, which offered the decision makers opportunities to update their beliefs about the scope of design right protection. We find that filing motives changed from specific protection goals to freedom to operate over time. We also find that the actors faced several, but sometimes contradictory, learning opportunities. There are two types of learning relating to the usage of design rights: 1) learning…
Models and algorithms for berth allocation problems in port terminals
2017
Seaports play a key role in maritime commerce and the global market economy. Goods of different kinds are carried in specialized vessels whose handling requires ad hoc port facilities. Port terminals comprise the quays, infrastructures, and services dedicated to handling the inbound and outbound cargo carried on vessels. Increasing seaborne trade and ever-greater competition between port terminals to attract more traffic have prompted new studies aimed at improving their quality of service while reducing costs. Most terminals implement operational planning to achieve more efficient usage of resources, and this poses new combinatorial optimization problems which have attracted increasing att…
Algunos problemas de rutas por arcos
2014
En esta tesis se estudian tres problemas de rutas por arcos muy importantes tanto a nivel práctico como teórico. Se tratan del General de Rutas por Arcos en un grafo dirigido (Directed General Routing Problem, DGRP), su caso particular, el problema de la Grúa (Stacker Crane Problem, SCP) y el problema del Cartero Rural Generalizado en un grafo dirigido (Generalized Directed Rural Postman Problem, GDRPP). El primer problema estudiado es problema de la Grúa el cual se define en un grafo mixto G=(V,E,A), donde cada arista o arco, (i,j), tiene un coste asociado cij > 0, y tiene como objetivo hallar una ruta de coste mínimo que recorra al menos una vez cada arco del grafo. El problema General de…
Fundamentos de Optimización Matemática en Economía
1999
La optimización matemática es un área dentro de las matemáticas que se encarga de la elección de la mejor alternativa de entre las posibles para un problema formulado en términos matemáticos. Este área de las matemáticas es muy amplia, debido a la diversidad de situaciones que se pueden plantear y a las distintas maneras de enfocar la resolución del problema. El presente texto, en la medida que pretende ser una herramienta para el análisis económico, se centra en la programación no lineal y en los métodos analíticos de resolución de esos problemas. Por tanto, el objetivo es proporcionar al lector los conocimientos básicos y avanzados de optimización matemática que destacan por su aplicabili…
Surrogate-assisted multicriteria optimization: Complexities, prospective solutions, and business case
2017
Complexity in solving real-world multicriteria optimization problems often stems from the fact that complex, expensive, and/or time-consuming simulation tools or physical experiments are used to evaluate solutions to a problem. In such settings, it is common to use efficient computational models, often known as surrogates or metamodels, to approximate the outcome (objective or constraint function value) of a simulation or physical experiment. The presence of multiple objective functions poses an additional layer of complexity for surrogate-assisted optimization. For example, complexities may relate to the appropriate selection of metamodels for the individual objective functions, extensive …
Quantitative Approximation Properties for the Fractional Heat Equation
2017
In this note we analyse \emph{quantitative} approximation properties of a certain class of \emph{nonlocal} equations: Viewing the fractional heat equation as a model problem, which involves both \emph{local} and \emph{nonlocal} pseudodifferential operators, we study quantitative approximation properties of solutions to it. First, relying on Runge type arguments, we give an alternative proof of certain \emph{qualitative} approximation results from \cite{DSV16}. Using propagation of smallness arguments, we then provide bounds on the \emph{cost} of approximate controllability and thus quantify the approximation properties of solutions to the fractional heat equation. Finally, we discuss genera…