Search results for "expectation"

Graph Topology Learning and Signal Recovery Via Bayesian Inference

2019

The estimation of a meaningful affinity graph has become a crucial task for representation of data, since the underlying structure is not readily available in many applications. In this paper, a topology inference framework, called Bayesian Topology Learning, is proposed to estimate the underlying graph topology from a given set of noisy measurements of signals. It is assumed that the graph signals are generated from Gaussian Markov Random Field processes. First, using a factor analysis model, the noisy measured data is represented in a latent space and its posterior probability density function is found. Thereafter, by utilizing the minimum mean square error estimator and the Expectation M…

I comportamenti virtuosi tra rispetto delle norme e aspettative sociali

2020

Il capitolo si sofferma sull’azione rispetto alle norme spiegando come le aspettative sociali ricoprano un ruolo cruciale nella gestione delle informazioni utili per muoverci nell’ambiente in cui viviamo, giacchè ci consentono di ridurre l’incertezza derivante dall’assunzione di determinate scelte, di stimare quali possibili effetti avrà una nostra azione in un determinato tempo e in uno specifico contesto, o ancora di valutare quali possono essere le strategie che possiamo mettere in campo per ridurre la probabilità di una risposta indesiderata da parte degli altri. The chapter focuses on action with respect to the rules, explaining how social expectations play a crucial role in the man…

Legalità, violenza e criminalità organizzata

2020

I contributi di questo volume, diversi per argomentazione e per tipo di approccio selezionato guardano ai temi della violenza e del rispetto delle norme evidenziando aspetti diversi, tutti tenuti insieme, però, dall'obiettivo generale del libro: approfondire la conoscenza delle dimensioni della violenza, dell'uso della violenza stessa da parte delle organizzazioni criminali, delle azioni di prevenzione e contrasto poste in essere, non trascurando il punto di vista dei giovani, anche a partire dai quali è stata costruita buona parte della base empirica necessaria per alcune riflessioni, utili per fornire indicazioni anche a coloro che quotidianamente sono impegnati in percorsi formativi volt…

Baltic Journal of Psychology; Volume 19, Number 1&2  

2019

Why people engage in supplemental work: The role of technology, response expectations, and communication persistence

2021

Supported by various collaboration technologies that allow communication from any place or time, employees increasingly engage in technology-assisted supplemental work (TASW). Challenges associated with managing work and non-work time have been further complicated by a global pandemic that has altered traditional work patterns and locations. To date studies applying a TASW framework have focused mainly on individual uses of technology or connectivity behaviors, and not considered the potential team and social pressures underlying these processes. This study provides clarity on the differences between technology use and TASW and sheds light on the drivers of TASW in a work environment charac…

Desigualdades de género y formación profesional : elecciones, abandono y expectativas.

2020

Este artículo tiene como objetivo analizar las desigualdades de género con relación a las motivaciones escolares a la hora de escoger un ciclo formativo de grado medio, las motivaciones del abandono femenino y las expectativas para después de la formación profesional. Se parte del contexto sociohistórico e institucional de la formación profesional en España, del marco teórico de las elecciones escolares y de la perspectiva de género en la segregación laboral y educativa. A través del análisis del discurso de 12 jóvenes entrevistadas, se ha podido comprobar la persistencia de las desigualdades de género en la formación profesional, en las elecciones y las motivaciones y también se han encont…

Elastic Constants of Quantum Solids by Path Integral Simulations

2000

Two methods are proposed to evaluate the second-order elastic constants of quantum mechanically treated solids. One method is based on path-integral simulations in the (NVT) ensemble using an estimator for elastic constants. The other method is based on simulations in the (NpT) ensemble exploiting the relationship between strain fluctuations and elastic constants. The strengths and weaknesses of the methods are discussed thoroughly. We show how one can reduce statistical and systematic errors associated with so-called primitive estimators. The methods are then applied to solid argon at atmospheric pressures and solid helium 3 (hcp, fcc, and bcc) under varying pressures. Good agreement with …

From primordial $^4$He abundance to the Higgs field

2008

We constrain the possible time variation of the Higgs vacuum expectation value ($v$) by recent results on the primordial $^4$He abundance ($Y_P$). For that, we improve the analytic models of the key-processes in our previous analytic calculation of the primordial $^4$He abundance. Furthermore, the latest results on the neutron decay, the baryon to photon ratio based on 5-year WMAP observations and a new dependence of the deuteron binding energy on $v$ are incorporated. Finally, we approximate the weak freeze-out, the cross section of photo-disintegration of the deuteron, the mean lifetime of the free neutron, the mass difference of neutron and proton, the Fermi coupling constant, the mass o…

Renormalization group approach to chaotic strings

2012

Coupled map lattices of weakly coupled Chebychev maps, so-called chaotic strings, may have a profound physical meaning in terms of dynamical models of vacuum fluctuations in stochastically quantized field theories. Here we present analytic results for the invariant density of chaotic strings, as well as for the coupling parameter dependence of given observables of the chaotic string such as the vacuum expectation value. A highly nontrivial and selfsimilar parameter dependence is found, produced by perturbative and nonperturbative effects, for which we develop a mathematical description in terms of suitable scaling functions. Our analytic results are in good agreement with numerical simulati…

Spin-orbit couplings within the equation-of-motion coupled-cluster framework: Theory, implementation, and benchmark calculations.

2015

We present a formalism and an implementation for calculating spin-orbit couplings (SOCs) within the EOM-CCSD (equation-of-motion coupled-cluster with single and double substitutions) approach. The following variants of EOM-CCSD are considered: EOM-CCSD for excitation energies (EOM-EE-CCSD), EOM-CCSD with spin-flip (EOM-SF-CCSD), EOM-CCSD for ionization potentials (EOM-IP-CCSD) and electron attachment (EOM-EA-CCSD). We employ a perturbative approach in which the SOCs are computed as matrix elements of the respective part of the Breit-Pauli Hamiltonian using zeroth-order non-relativistic wave functions. We follow the expectation-value approach rather than the response-theory formulation for p…