4,729 research outputs found

    The Role of Father Involvement and Marital Satisfaction in the Development of Family Interactive Abilities: A Multilevel Approach.

    Get PDF
    The study aims to investigate the development of family interactions from pregnancy to preschool age in a longitudinal perspective, using multilevel analysis. Also, it explored the impact of couple relationship and father involvement in childcare on the developmental trend of the quality of mother\u2013father\u2013child interactions. One hundred and three primiparous families were assessed at 7th month of pregnancy, 4th, 9th, and 18th months of child\u2019s life and during preschool age (36\u201348th), using the observational procedure named, Lausanne Trilogue Play. Parents\u2019 perception of marital satisfaction was assessed with the Dyadic Adjustment Scale at each point of measure; moreover, in the postnatal assessment, parents completed the Father Involvement Questionnaire. Results showed that family interactions increase over time. Secondly, a decrease of marital adjustment is associated with an improvement of the quality of family interactions. Moreover, father involvement predicts the quality of family interactions from the earliest stages of child\u2019s life. In a longitudinal perspective, family interactions and marital quality show opposite developmental trends and father\u2019s involvement represents a particularly important feature of the family

    Effect of airborne particle abrasion on microtensile bond strength of total-etch adhesives to human dentin

    Get PDF
    Aim of this study was to investigate a specific airborne particle abrasion pretreatment on dentin and its effects on microtensile bond strengths of four commercial total-etch adhesives. Midcoronal occlusal dentin of extracted human molars was used. Teeth were randomly assigned to 4 groups according to the adhesive system used: OptiBond FL (FL), OptiBond Solo Plus (SO), Prime & Bond (PB), and Riva Bond LC (RB). Specimens from each group were further divided into two subgroups: control specimens were treated with adhesive procedures; abraded specimens were pretreated with airborne particle abrasion using 50 mu m Al2O3 before adhesion. After bonding procedures, composite crowns were incrementally built up. Specimens were sectioned perpendicular to adhesive interface to producemultiple beams, which were tested under tension until failure. Data were statistically analysed. Failure mode analysis was performed. Overall comparison showed significant increase in bond strength (p < 0.001) between abraded and no-abraded specimens, independently of brand. Intrabrand comparison showed statistical increase when abraded specimens were tested compared to no-abraded ones, with the exception of PB that did not show such difference. Distribution of failure mode was relatively uniform among all subgroups. Surface treatment by airborne particle abrasion with Al2O3 particles can increase the bond strength of total-etch adhesive

    Digital documentation of fortified urban routes in Pavia (Italy): territorial databases and structural models for the preservation of military ruins

    Full text link
    [EN] The analysis of the fortified routes in the city of Pavia (Italy) clarifies the adaptation of the medieval capital in the historical politics of the Mediterranean, where the evolution of the defensive system till the Spanish bastioned walls (sixteenth century) identifies the updating of the Lombard tradition to the practices of modern military architecture. Their defensive structures survive in the urban design of the contemporary city, in the configuration of infrastructures and urban aggregates, reflecting the consequences of the great processes of their dismantling (from 1905). The comparison between historical investigations and the current ruins, fragmented into disconnected portions between the historical bastions and the monumental gates, shows a picture of abandonment of the military structures that generates repeated collapses and emerging risk factors towards the surrounding densified urban context. The experimentation of military architectural approaches of documentation at the urban scale, developed by the research laboratory DAda Lab. of University of Pavia, defines an analysis process through the digital representation of the urban remains that is suitable for the preservation of the survived city walls and the enhancement of their fortified identity. The application of different 3D LiDAR systems for morphological acquisition promotes an integrated digitation process of scansets on the fortified system controlled at the urban metric scale: the experimentation applies the use of a mobile real time scanner for the digital tracking of historical routes, on which to implement the georeferencing of detailed static scanworlds, integrated in correspondence of Bastions and Monumental Gates. The optimization of architectural data density and the integration between data contribute to finalize a 3D territorial database predisposed to the architectural modelling of volumes and scenarios of structural instability of the military ruins, defining a virtual framework of widespread knowledge for the historical conservation and urban prevention of the fortified systemDe Marco, R.; Galasso, F.; Malusardi, C. (2020). Digital documentation of fortified urban routes in Pavia (Italy): territorial databases and structural models for the preservation of military ruins. Editorial Universitat Politècnica de València. 349-356. https://doi.org/10.4995/FORTMED2020.2020.11518OCS34935

    Improvement of railway track diagnosis using Ground Penetrating Radar

    Get PDF
    The scope of this research is to provide an improved procedure for track railways monitoring, which should be an alternative to the one commonly used in Portugal and in others European countries. The traditionally approach for track maintenance corrects the track geometry withouth finding out the causes of geometric defects, namely the ones related with the foundation condition. The methodology proposed in this research aims to determining the real causes of track degradation through the application of a non-destructive equipment, the Ground Penetrating Radar (GPR). The GPR is widely used for road applications while for railways applications it is still under development. Among its advantages, it enables performing measurements in a continuous way, reducing traffic interruptions, and it allows for subsurface layers characterisation in terms of layers thicknesses. On the other hand, as its application is still quite recent in this field, special care is still needed before, during and after tests performance. In particular, for GPR data intepretation, a calibration study for track materials characterisation is always needed. In situ test pits and laboratory tests are performed and presented in this thesis. The proposed methodology consists in correlating track geometric parameters with GPR data. It intends to provide an efficient tool for supporting maintenance decisions at network level. In this way, it aims to contribute for the identification of crtical areas and for prediction of track defects, in a more efficient way comparing to the methodology currently performed

    Improvement of railway track diagnosis using Ground Penetrating Radar

    Get PDF
    The scope of this research is to provide an improved procedure for track railways monitoring, which should be an alternative to the one commonly used in Portugal and in others European countries. The traditionally approach for track maintenance corrects the track geometry withouth finding out the causes of geometric defects, namely the ones related with the foundation condition. The methodology proposed in this research aims to determining the real causes of track degradation through the application of a non-destructive equipment, the Ground Penetrating Radar (GPR). The GPR is widely used for road applications while for railways applications it is still under development. Among its advantages, it enables performing measurements in a continuous way, reducing traffic interruptions, and it allows for subsurface layers characterisation in terms of layers thicknesses. On the other hand, as its application is still quite recent in this field, special care is still needed before, during and after tests performance. In particular, for GPR data intepretation, a calibration study for track materials characterisation is always needed. In situ test pits and laboratory tests are performed and presented in this thesis. The proposed methodology consists in correlating track geometric parameters with GPR data. It intends to provide an efficient tool for supporting maintenance decisions at network level. In this way, it aims to contribute for the identification of crtical areas and for prediction of track defects, in a more efficient way comparing to the methodology currently performed

    The efficacy and predictability of maxillary first molar derotation with invisalign: a prospective clinical study in growing subjects

    Get PDF
    To analyze the derotation of maxillary mesio-rotated first permanent molars in subjects with Class II edge-to-edge dental malocclusion in mixed dentition treated with Invisalign Clear Aligners (CA). In total, 36 patients (16 males, 20 females, 9.9 &plusmn; 1.9 years) treated with CA are enrolled from the Department of Orthodontics. Inclusion criteria are the following: Caucasian ancestry, mixed dentition, molar Class II edge-to-edge, no tooth/craniofacial anomalies, no caries/periodontal diseases. Pre-treatment (T1) and post-treatment (T2) digital casts, and final ClinCheck representations (T2ClinCheck) are acquired. The Henry&rsquo;s angle (HA) is used to assess maxillary first molars rotation. The molars with an HA &gt; 11&deg; are taken (53 teeth). Five measurements are performed at T1, T2, and T2ClinCheck: Henry&rsquo;s angle (HA), mesiobuccal-expansion (MBE), distobuccal-expansion (DBE), mesiobuccal-sagittal (MBS), and distobuccal-sagittal (DBS). A paired t-test was used to compare T2-T1 and T2ClinCheck-T2. The T2-T1 shows a distal-rotation (difference &minus;6.3&deg;) with an expansion of 2.2 mm for MBE and 1.5 mm for DBE. At T2, the mesiobuccal cusps show a distal movement of 1.0 mm and the distobuccal cusps of 0.9 mm. The HA&rsquo;s T2ClinCheck-T2 difference is &minus;4.2&deg;. In the sagittal plane, the difference is 0.9 mm for the MBS and 0.7 mm for the DBS. The expansion showed the highest predictability (60% HA, 52.6% MBS, and 56.25% DBS). The CA effectively produces an arch expansion and upper molars&rsquo; distal rotation. Upper molar derotation provides a 1 mm of gain in arch perimeter and occlusal improvement

    Physical education teacher training for disability

    Get PDF
    This work in focused on investigation of physical education teachers’ education with pedagogical bases for students with disabilities. Starting from an American research on teachers of physical education who work in contact with the disability, it has shown how the teachers express negative attitudes towards inclusion because they consider their training inadequate. The aim is to understand the phenomenon of physical education teacher training analysing the documentary research of the master’s degree programs in sports sciences in Italy, with a specific study on the master’s degree in sports sciences at the university of Salerno and, finally, a survey on teachers’ perception of disability. The first study revealed that the main difficulty encountered is the inability to plan inclusive and personalized lessons, since the degree courses refer to the bio-medical area. The second study, the analysis of the Master degree course of Science in Sports Science at the University of Salerno, mainly refers to the pedagogical-didactic area and aimed at teaching and designing for the purpose of education for the disabled. From the fact-finding survey on teachers’ perceptions emerges that both pedagogy and teaching are fundamental for any job in the motor and sports field, even for those who decide not to teach. In conclusion, the training of the physical education teacher who also teaches the disabled must have a less bio-medical and more pedagogical education

    A STEM Literacy Program for Students in Secondary-Tertiary Transition to Reduce the Gender Gap: a Focus on the Students' Perception

    Get PDF
    This study concerns the design and implementation of a STEM literacy program for 11th to 13th-grade high achieving students, mainly females. The program, funded by the Italian Ministry of Equal Opportunities, aims at reducing the gender gap in the STEM disciplines and at orienting students towards university studies. We carried out a qualitative analysis of the students’ perception in terms of (1) a-priori expectations about the STEM literacy program and (2) a-posteriori thoughts and reflections about the attended course. Our analysis shows that students aspiring to participate had strong motivations with respect to the program; moreover, most students who participated in the program displayed satisfaction and an increase of awareness about their learning. We put a specific focus on the mathematical sessions of the curriculum, involving students as designers of educational resources. Some differences between male and female students arose for what concerns the perception of the program and the awareness of the impact of the STEM literacy program on their own learning

    New architectural design of delivery room reduces morbidity in preterm neonates: a prospective cohort study

    Get PDF
    Background: A multidisciplinary committee composed of a panel of experts, including a member of the American Academy of Pediatrics and American Institute of Architects, has suggested that the delivery room (DR) and the neonatal intensive care units (NICU) room should be directly interconnected. We aimed to investigate the impact of the architectural design of the DR and the NICU on neonatal outcome. Methods: Two cohorts of preterm neonates born at < 32weeks of gestational age, consecutively observed during 2years, were compared prospectively before (Cohort 1: "conventional DR") and after architectural renovation of the DR realized in accordance with specific standards (Cohort 2: "new concept of DR"). In Cohort 1, neonates were initially cared for a conventional resuscitation area, situated in the DR, and then transferred to the NICU, located on a separate floor of the same hospital. In Cohort 2 neonates were assisted at birth directly in the NICU room, which was directly connected to the DR via a pass-through door. The primary outcome of the study was morbidity, defined by the proportion of neonates with at least one complication of prematurity (i.e., late-onset sepsis, patent ductus arteriosus, intraventricular hemorrhage, periventricular leukomalacia, bronchopulmonary dysplasia, retinopathy of prematurity and necrotizing enterocolitis). Secondary outcomes were mortality and duration of hospitalization. Statistical analysis was performed using standard methods by SPSS software. Results: We enrolled 106 neonates (56 in Cohort 1 and 50 in Cohort 2). The main clinical and demographic characteristics of the 2cohorts were similar. Moderate hypothermia (body temperature ≤ 35.9° C) was more frequent in Cohort 1 (57%) compared with Cohort 2 (24%, p = 0.001). Morbidity was increased in Cohort 1 (73%) compared with Cohort 2 (44%, p = 0.002). No statistically significant differences in mortality and median duration of hospitalization were observed between the 2 cohorts of the study. Conclusions: If realized according to the proposed architectural standards, renovation of DR and NICU may represent an opportunity to reduce morbidity in preterm neonates

    A methodological comparison between energy and environmental performance evaluation

    Get PDF
    The European Union is working on strategies in order to increase the energy efficiency of buildings. A useful solution is to identify the energy performance of buildings through the Energy Performance Certificate (EPC), as it provides information for the comparison of buildings with different architectural typology, shape, design technology and geographic location. However, this tool does not assess the real energy consumption of the building and does not always take into account its impact on the environment. In this work, two different types of analysis were carried out: one based only on the energy efficiency and the other one based on the environmental impact. Those analyses were applied on a standard building, set in three different Italian locations, with the purpose of obtaining cross-related information. After the evaluation of the results, interventions on some parameters (walls insulation, windows frame, filler gas in the insulated glazing) have been identified in order to improve the energy behavior of the building with an acceptable environmental impact. The aim of this paper is to propose a methodology that integrates the EPC with green building rating systems, leading to a more conscious choice of retrofit interventions as a compromise between energy performances and environmental impact
    • …
    corecore