Search results for " multilevel"

Resident’s Perceptions of Tourism Influence on Quality of Life: a Multilevel approach.

2015

This study aims to evaluate whether individual perceptions of tourism’s effects on quality of life (TQOL) are related to the degree of tourism activity in the host community, as well as to residents’ personal characteristics, by a multilevel model. Data from a survey performed in Sicily have been analyzed. The model revealed that the level of tourism activity have an influence on the way residents perceive the effect tourism in their community, as measured by TOQL index.

Cascaded H-Bridges Multielvel Inverters: grid connected advanced applications

Power electronics is going to increase in the modern electrical systems. It is well known that the use of power electronics allows the management and the control of the energy flow, obtaining voltage and current waveforms suitable for electrical loads. In this scenario, multilevel power converters are finding increased attention in industry and academia as one of the promising choices of electronic conversion thanks to their features and many different application fields with high power and medium voltage. Moreover, they are fundamental in interfacing electric grid to high power renewable energy systems (i.e. PV, Wind farm, Biomass, Fuel Cell etc.). Nowadays, the research is focused on the …

Graphical THD minimization procedure for single phase five-level converters

2017

This paper proposes two graphycal procedure to mitigate h harmonics and to minimize the total harmonic distortion (THD), respectively. The paper considers a five-level inverter and fundamental frequency modulation: it computes the two switching angles able to reduce low order harmonics and able to minimize the THD. Simulation results are obtained and, in order to validate the proposed procedure, an experimental prototype is built and experimental results are carried out. The comparison between simulation and experimental results confirms the accuracy of the proposed graphycal procedure. It is shown that the switching angles to mitigate the third-fifth and the third-fifth-seventh harmonics e…

Numeri indici applicati ai prezzi immobiliari

2008

Does single-event multilevel surgery enhance physical functioning in the real-life environment in children and adolescents with cerebral palsy (CP)?:…

2013

Orthopedic procedures are a method of treating gait deviations and musculoskeletal pathology that develop with age in cerebral palsy (CP). Recently single-event multilevel surgery (SEMLS) has become common practice. Although there is evidence that SEMLS could improve gait, it is unclear whether it will enhance overall physical functioning and coping strategies in the real-life environment. It is unclear how improved walking capacity affects actual functioning and enables greater independence. The aim of this study was to examine the perceptions of adolescents concerning the results of surgery on personal physical functioning in the environment five or more years after SEMLS. In this study, …

Group as a Social Microcosm: The Reciprocal Relationship Between Intersession Intimate Behaviors and In-Session Intimate Behaviors

2021

The social microcosm is defined as group members replicating their everyday (intersession) interpersonal behaviors in group sessions and new behaviors, learned in the group (in-session), replicating in the members' everyday life. We examined intersession and in-session intimate behaviors, at the within-member (differences in intimate behaviors between weeks/sessions), between-member (average differences in intimate behaviors between group members) and between-groups (group-level differences in intimate behaviors). Participants were 178 graduate students (86% identifying as women and 14% as men) participating in 10 5-session growth groups led by experienced group therapists. Before group ses…

Challenges in dental statistics: data and modelling

2022

The aim of this work is to present the reflections and proposals derived from the first Workshop of the SISMEC STATDENT working group on statistical methods and applications in dentistry, held in Ancona (Italy) on 28th September 2011. STATDENT began as a forum of comparison and discussion for statisticians working in the field of dental research in order to suggest new and improve existing biostatistical and clinical epidemiological methods. During the meeting, we dealt with very important topics of statistical methodology for the analysis of dental data, covering the analysis of hierarchically structured and over-dispersed data, the issue of calibration and reproducibility, as well as some…

Experimental Evaluation of the Performance of a Three-Phase Five-Level Cascaded H-Bridge Inverter by Means FPGA-Based Control Board for Grid Connecte…

2018

Over the last decades, plants devoted to the generation of green energy significantly increased their number, together with the demand of same electrical energy, also stored in battery systems. This fact produced the growth of energy conversion systems with advanced performances with respect to the traditional ones. In this circumstance, multilevel converters play a significant role for their great advantages in performances, flexibility, fault-tolerability, employment of renewable energy sources and storage systems and finally yet importantly reduced filter requirements. In this context, this paper faces the performance of a cascaded H-bridge 5 level inverter in terms of harmonic distortio…

Estimating Verdoorn law for Italian firms and regions

2011

In empirical regional economics, returns to scale are typically estimated at the regional level in search for evidence on alternative theories of growth and agglomeration. However, returns to scale may also have a firm-level dimension. In this paper, we exploit micro level data and estimate the dynamic Verdoorn law in a multilevel-setting, where returns to scale are obtained simultaneously for the micro and the regional level. Using Italian firm-level data and the NUTS-3 level of aggregation, we estimate the classic and augmented versions of Verdoorn law for the manufacturing sector, and the rest of the economy for comparison. Our results show that increasing returns to scale co-exist at bo…

Organizzazione e diritto alla salute, alla prova della regionalizzazione e dell'aziendalizzazione dei servizi sanitari

2018

The contribution proposes an analysis of the effectiveness of the right to health, deepening the evolution of “regionalization” and “privatization of a state-owned company” of the National Health Service, in comparison with the marked regional differences (gaps) in the provision of Essential Levels of Assistance. The author researches the profile of the organization and of the financing of health services which take on a peculiar complexity in the health sector, in which there is the most complex experience of decentralization and also the introduction of fiscal federalism through the application of the requirement and the standard cost. For the purposes of overcoming health inequalities, t…