169,881 research outputs found
A PDE-constrained optimization formulation for discrete fracture network flows
No full textWe investigate a new numerical approach for the computation of the 3D flow in a discrete fracture network that does not require a conforming discretization of partial differential equations on complex 3D systems of planar fractures. The discretization within each fracture is performed independently of the discretization of the other fractures and of their intersections. Independent meshing process within each fracture is a very important issue for practical large scale simulations making easier mesh generation. Some numerical simulations are given to show the viability of the method. The resulting approach can be naturally parallelized for dealing with systems with a huge number of fractures
Children writing on anger. An instrument for the promotion of an effective emotion management? Symposium “The development of emotional competence: correlational and training studies”
No full textIt is well known that an effective emotion management can have strong implications in the development of adaptive behaviours especially during childhood and adolescence and with particular reference to anger-related emotions.
The present study has two main goals: on one hand we wanted to test the hypothesis that stimulating the use of narrative applied to episodes of anger that had been experienced by children in their everyday life can elicit adaptive ways of coping with negative feelings; on the other hand we intended to show the relationship between an effective anger-related emotion management and the children’s social functioning in the peer group.
Method. Our sample included 96 children (M=46; F=50) aged 8 to 11. The experimental subjects were 42 children who attended a school training on anger management through the writing of an event-based semi-structured diary and a subsequent discussion in the class. We also administered to the whole sample an interview designed to assess coping strategies, emotion regulation and the expectancies about the possibility to solve the stressful situation: children were asked to answer questions about four stories based on realistic situations set in two different kinds of social contexts (peer group, adults).
Results. The preliminary analysis we performed on our data, showed that experimental subjects seemed to interpret the consequences of stressful situations on a level which appeared to be more abstract and less connected to individual factors than the one controls referred to. The variable “social context” seemed to influence the children’s coping strategies, the latter acting as mediators of the subjects’ social functioning. Further analyses must be performed in order to confirm these first results.
Conclusions. The use of diary writing seems to represent a promising tool to promote the development of emotional and socio-cognitive skills in school children
Surgical extraction of impacted inferior third molars at risk for inferior alveolar nerve injury
No full textRadiographic superimposition and mandibular peripheral osteoma: The importance of clinical and ct findings
No full textAn optimization based 3D-1D coupling strategy for tissue perfusion and chemical transport during tumor-induced angiogenesis
No full textThe application of an optimization based 3D-1D coupling strategy is proposed, for the first time, for the simulation of fluid and chemical exchanges between a growing capillary network and the surrounding tissue, in the context of tumor-induced angiogenesis. A well posed mathematical model is worked out, based on the coupling between a three-dimensional and a one-dimensional equation (3D-1D coupled problem). The problems are then solved in a PDE-constrained optimization framework, under which no mesh conformity is required.
This makes the method particularly suitable for this kind of application, since no remeshing is required as the capillary network grows. In order to handle both the evolution of the quantities of interest and the changes in the geometry, a discrete-hybrid strategy is adopted, combining a continuous modeling of the tissue and of the chemicals with a discrete tip-tracking model to account for the vascular network growth. The tip-tracking strategy, together with some proper rules for branching and anastomosis, is able to provide a realistic representation of the capillary networ
Development and Factor Structure of a New Questionnaire Measuring Moral Disengagement in Cyber conducts: Preliminary Findings.
No full textThe impact of Moral Disengagement (MD)– a set of cognitive mechanisms allowing individuals to engage in aggressive conducts while upholding the feeling of behaving morally (Bandura, 1996) – on the involvement in cyberbullying represents a new research field. The purpose of this study was to develop, and establish the initial factor structure of, a new questionnaire for the measurement of MD related to cyberconducts. Numerous items (statements referring, in various ways, to the acceptability of media-based aggressions) were generated by the researchers within the framework of Bandura’s conceptualization, and underwent the examination of a panel of experts and of adolescents participating in focus groups. Items considered appropriate by most raters formed the preliminary version of the new measure (22 items), subsequently administered to 679 adolescents (55% Females; Mage = 16.51, SD = 1.52), who were asked to rate their agreement with the items on a 5-point Likert-type scale. Bartlett’s test and the KMO value indicated that data were suitable for exploratory factor analysis (EFA). To evaluate the structure of the instrument , we conducted a common factor analysis using principal axis factoring and Varimax rotation. The number of factors was determined by Eigenvalues > 1.0 and a noticeable change in the slopes within the scree plot. Items with factor loadings < .50 were excluded and a further EFA was performed which indicated a two-factor structure with adequate internal consistency. The variance explained by the two dimensions was 45 %. Factor 1 includes five items related to attenuation of consequences, while Factor 2 comprises four items referring to attribution of blame to victims. Confirmatory factor analysis, the examination of the construct validity and test-retest reliability procedures have been planned to confirm the suitability of this instrument for assessing self-justifying strategies in cyberaggressions
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