Search results for "Partial"

A note on *-derivations of partial *-algebras

2012

A definition of *-derivation of partial *-algebra through a sufficient family of ips-forms is proposed.

Shape optimization in contact problems : Approximation and numerical realization

1987

The optímal shape design of a two-dimensíonal elastic body on rigid foundatíon is analyzed. The relation between the continuous problem and the díscrete problem achieved by FEM is presented. A numerícal realization together wíth the sensítivity analysís is given. Several numerical examples to illustrate the practícal use of the methods are presented. peerReviewed

Pulsed Electro-Acoustic space charge apparatus – qualifying, testing and monitoring of insulation for HVDC cables and accessories

2022

Partial Information Decomposition of Brain-Heart Interactions in Temporal Lobe Epilepsy in the Childhood

We apply information decomposition methods to elicit unique, redundant and synergistic causal contributions of ipsilateral and contralateral EEG activity to heart rate dynamics in epileptic children. We find that information flows from brain to heart according to opposite lateralization effects for the delta and alpha rhythms, suggesting that different neuroautonomic mechanisms take place in the pre- and post-ictal phases of temporal lobe seizures.

ADI schemes for valuing European options under the Bates model

2018

This paper is concerned with the adaptation of alternating direction implicit (ADI) time discretization schemes for the numerical solution of partial integro-differential equations (PIDEs) with application to the Bates model in finance. Three different adaptations are formulated and their (von Neumann) stability is analyzed. Ample numerical experiments are provided for the Bates PIDE, illustrating the actual stability and convergence behaviour of the three adaptations. peerReviewed

Measuring the perceived value of rural tourism: a field survey in the western Sicilian agritourism sector

2016

Rural tourism constitutes a valuable tool for the sustainable development of many rural areas. This paper examines the concept of perceived value in rural tourism. A quantitative field survey was carried out in some main Western Sicilian holiday farms (agritourisms) during the Spring 2014. A theoretical model of the tourists’ perceived value in this specific context was developed and validated, using a 22-item scale. Using Partial Least Squares Path Modelling a theoretical structural model of the multidimensional structure of the RTPV was tested, assessing intensity and direction of the causal relationships among RTPV and its dimensions. Five dimensions were identified as forming the constr…

Structural Parameters under Partial Least Squares and Covariance-Based Structural Equation Modeling : A Comment on Yuan and Deng (2021)

2023

In their article, Yuan and Deng argue that a structural parameter under partial least squares structural equation modeling (PLS-SEM) is zero if and only if the same structural parameter is zero under covariance-based structural equation modeling (CB-SEM). Yuan and Deng then conclude that statistical tests on individual structural parameters assessing the null hypothesis of no effect can achieve the same purpose in CB-SEM and PLS-SEM. Our response to their article highlights that the relationship they find between PLS-SEM and CB-SEM structural parameters is not universally valid, and that consequently, tests on individual parameters in CB-SEM and PLS-SEM generally do not fulfill the same pur…

Cell Mediated Immune System Hyperactivation and Complications in Surgery. Is There a Correlation?

2010

Introduction: The role of the immune system in wound healing is multifaceted and cell-to-cell interactions may affect healing in several ways, many of which are probably still unknown. The case of a 19-year-old girl who, after multiple postsurgical complications, was found to have a transient immune system hyperactivation is reported. Materials and Methods: A 19-years-old woman with a breast asymmetry, previously treated with breast augmentation and contralateral reduction mammaplasty, had her implant removed and she came to our attention seeking autologous reconstruction. A free DIEP flap was performed and, again, wound breakdown and liponecrosis ensued at both the donor and recipient site…

Contro l’uso della nullita ` parziale in chiave di conformazione del contratto

2020

.Il saggio analizza la tendenza giurisprudenziale a servirsi della nullita ` parziale ex art. 1419 c.c. per realizzare interventi sul contratto animati dall’obiettivo di ridefinirne il contenuto in funzione di riequilibrio dei relativi termini. Il caso piu ` eclatante registrato di recente e ` rappresentato dalla sentenza a Sezioni unite del 2018 in materia di contratti di assicurazione della responsabilita ` civile con copertura claims made, nella quale si e ` assistito all’abbandono del grimaldello della meritevolezza degli interessi di cui all’art. 1322 c.c. a vantaggio di un uso altamente censurabile della categoria della causa del contratto che sfocia in una declaratoria di nullita ` p…

A fuzzy approach to multidimensional material deprivation measurement: the case of foreigners living in Italy

2014

This paper provides a new approach to the measurement of multidimensional material deprivation, based on partial order theory and on fuzzy set measurement. The main feature of the methodology is that the information needed for the deprivation assessment is extracted directly from the relational structure of the dataset, avoiding any kind of scaling and not proper aggregation procedure, so as to respect the measurement level of the data. An empirical illustration, using data from a special EU-SILC survey on migrants in Italy, provides a new insight on the material deprivation of foreigners living in Italy