Search results for "Opera"
showing 10 items of 8665 documents
MR3535311 Reviewed Inoue, H.(J-KYUSGM); Takakura, M.(J-FUE-AM) Regular biorthogonal pairs and pseudo-bosonic operators. (English summary) J. Math. Ph…
2017
Given a pair of operators a and b acting on a Hilbert space H, such that [a,b]=1, the authors give a method to construct a regular bi-orthogonal pair of sequences in H. They study the relationship between the conditions on a,b,a†,b† and the operators Ae,Be,A†e,B†e, considered by one of the authors in a previous paper, in the set-up of a general theory of bi-orthogonal pair sequences. Then they give a method to construct operators A and B with the so-called D-pseudo bosons conditions, i.e. the commutation rule and some assumptions, on a dense subspace D of H, considered in the literature. Finally, some physical examples are given.
The existence of solutions for the modified (p(x), q(x))-Kirchhoff equation
2022
We consider the Dirichlet problem-Delta(Kp)(p(x))u(x) - Delta(Kq)(q(x))u(x) = f(x, u(x), del u(x)) in Omega, u vertical bar(partial derivative Omega) = 0,driven by the sum of a p(x)-Laplacian operator and of a q(x)-Laplacian operator, both of them weighted by indefinite (sign-changing) Kirchhoff type terms. We establish the existence of weak solution and strong generalized solution, using topological tools (properties of Galerkin basis and of Nemitsky map). In the particular case of a positive Kirchhoff term, we obtain the existence of weak solution (= strong generalized solution), using the properties of pseudomonotone operators.
Validation of a Work Engagement Scale. Profi les associated with high Performance and Job Satisfaction
2017
El objetivo principal de este estudio consistía en la validación de una escala para la evaluación del work engagement -compromiso con el trabajo-, considerado como una presencia psicológica en el rol que incluye atención, absorción y energía dirigida a tareas laborales. Mediante análisis factorial confirmatorio, estimación de la consistencia interna y evidencias de validez convergente y discriminante, se confirma que la Escala Argentina de Compromiso con el Trabajo es una prueba válida y confiable para su uso en población argentina. Además, se buscó analizar si existen diferencias en los niveles de work engagement de acuerdo con variables individuales y organizacionales. Se observaron mayor…
Estudio médico-legal de los casos de asesinatos en serie sucedidos en España en los últimos treinta años (1984-2014)
2018
El asesino en serie es visto hoy en día como uno de los grandes depredadores humanos de nuestra sociedad. Constituye un problema y un gran reto para aquellos que se enfrentan a este tipo de violencia, tanto al tratar de atajarla como de prevenirla. Como en cualquier otro tipo de delito, conocer y comprender su génesis, sus motivaciones y los factores que lo integran es trascendental para abordar el problema. España no es ajena a este tipo de violencia. No son pocos los homicidas que han presentado tal clase de patrón en los últimos años. El presente trabajo trata de analizar los casos de asesinatos seriales que se han dado en nuestro país en las tres últimas décadas, entre 1984 y 2014, una …
Operācijas māsu kompetenču pašnovērtējums pacienta perioperatīvajā aprūpē
2021
Bakalaura darba tēmas – “Operācijas māsu kompetenču pašnovērtējums pacienta perioperatīvajā aprūpē” – aktualitāti nosaka tehniski sarežģītais operācijas māsas darbs, kura izpilde atkarīga no operācijas māsu kompetenču līmeņa. Līdz šim Latvijā nav veikti pētījumi, kas noteiktu operācijas māsu vispārējo kompetenču līmeni. Darba mērķis: noskaidrot operācijas māsu kompetenču pašnovērtējumu pacienta perioperatīvajā aprūpē Pētniecības uzdevumi: izveidot pētījuma teorētisko bāzi un instrumentu, veikt anketēšanu un statistiski analizēt datus Hipotēze: operācijas māsām ir augsts pacienta perioperatīvās aprūpes kompetenču pašnovērtējums Pētniecības metode: kvantitatīvā Pētniecības instruments: aptauj…
Działania psychologiczne w aspekcie wyzwań XXI wieku
2016
The article concentrates on possibilities of taking advantage of deception operations by human intelligence, electronics intelligence and in psychological operations. Psychological operations are planned activities using methods of communication and other means directed at approved audiences in order to influence perceptions, attitudes and behaviour, affecting the achievement of political and military objectives.
Le cause di esclusione di cui all’art. 80 D.Lgs. n. 50/2016 tra Linee guida dell’ANAC e principi di tassatività e legalità
2017
This paper, concerning the Guidelines adopted by the ANAC on the subject of "Indication adequate means of proof and deficiencies in the performance of a previous procurement contract which may be considered significant for demonstrating the circumstances of exclusion pursuant to art. 80 paragraph 5, lett. c) of the code”, aims to highlight on the one hand how, the alleged optional nature of the same, recognizing to the individual contracting stations the right to decide on the applicability of the Lines themselves, could, on the one hand, lead to situations potentially harmful to the constitutional principles pursuant to articles 3, 41 and 117, paragraph 2, lett. e) of the Constitution, to …
Automated Checking of Flexible Mathematical Reasoning in the Case of Systems of (In)Equations and the Absolute Value Operator
2021
We present an approach and a tool for automatically providing feedback on solutions that involve complicated reasoning patterns. Currently the tool supports linear systems of equations and inequations that may also contain the absolute value operator and a restricted form of rational functions. This suffices for designing problems that are laborious to solve with standard mechanical procedures, but much easier using short-cuts that students may find by creative thinking. Earlier research has found that struggling with important mathematics promotes conceptual development. Our goal is to encourage students to such struggling. A crucial feature is to give them great freedom to choose the path…
Infiltrācijas anestēzijas starp paceles artēriju un ceļa mugurējo kapsulu kopā ar adduktoru kanāla blokādi analgēzijas efektivitāte pēc ceļa locītava…
2021
KOPSAVILKUMS Ievads: Pēcoperācijas sāpes samazina pacienta mobilitāti, pagarina hospitalizācijas laiku un palielina komplikāciju risku. Ir pētītas dažādas pēcoperācijas atsāpināšas shēmas pēc ceļa locītavas endoprotezešānas, tomēr problēma saglabājās. Nesen tika ieviesta adduktoru kanāla blokāde (AKB) kā selektīva sensorā fasciālā analgēzijas metode, tomēr ir pierādījumi, ka tā nenodrošina efektīvu analgēziju ceļa mugurējās kapsulas daļā, tādēļ to kombinē ar citām blokādēm. Infiltrācija starp paceles artēriju un ceļa kapsulu (IPACK) nodrošina ceļa mugurējās daļas atsāpināšanu, neradot muskuļu vājumu. Darba mērķis: Noskaidrot IPACK pievienošanas efektivitāti AKB attiecībā uz pēcoperācijas an…
Resolvent estimates for elliptic quadratic differential operators
2011
Sharp resolvent bounds for non-selfadjoint semiclassical elliptic quadratic differential operators are established, in the interior of the range of the associated quadratic symbol.