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Early dropout predictive factors in obesity treatment
Ilaria Michelini,Anna Giulia Falchi,Chiara Muggia,Ilaria Grecchi,Elisabetta Montagna,Annalisa De Silvestri,Carmine Tinelli 한국영양학회 2014 Nutrition Research and Practice Vol.8 No.1
Diet attrition and failure of long term treatment are very frequent in obese patients. This study aimed to identify pre-treatment variables determining dropout and to customise the characteristics of those most likely to abandon the program before treatment, thus making it possible to modify the therapy to increase compliance. A total of 146 outpatients were consecutively enrolled; 73 patients followed a prescriptive diet while 73 followed a novel brief group Cognitive Behavioural Treatment (CBT) in addition to prescriptive diet. The two interventions lasted for six months. Anthropometric, demographic, psychological parameters and feeding behaviour were assessed, the last two with the Italian instrument VCAO Ansisa; than, a semi-structured interview was performed on motivation to lose weight. To identify the baseline dropout risk factors among these parameters, univariate and multivariate logistic models were used. Comparison of the results in the two different treatments showed a higher attrition rate in CBT group, despite no statistically significant difference between the two treatment arms (P = 0.127). Dropout patients did not differ significantly from those who did not dropout with regards to sex, age, Body Mass Index (BMI), history of cycling, education, work and marriage. Regardless of weight loss, the most important factor that determines the dropout appears to be a high level of stress revealed by General Health Questionnaire-28 items (GHQ-28) score within VCAO test. The identification of hindering factors during the assessment is fundamental to reduce the dropout risk. For subjects at risk, it would be useful to dedicate a stress management program before beginning a dietary restriction.
Ilaria Cristofolini,Nicolò Corsentino,Alberto Molinari,Mats Larsson 한국정밀공학회 2014 International Journal of Precision Engineering and Vol. No.
In the conventional press and sinter process, dimensional change on sintering determines the precision of the final parts, providingthat a good dimensional precision of green parts is ensured. Anisotropic dimensional change on sintering may be detrimental to theprecision of Powder Metallurgy (PM) parts, and it should be considered in the design step. The effect of material and geometry onthe anisotropic dimensional change is studied in this work. Four different iron alloys and five different geometries were considered. Dimensions were measured both on green and on sintered parts and the anisotropy of dimensional change was evaluated andcorrelated to the material and geometry. The effect of neglecting anisotropy in the design step was investigated, in terms ofdimensional tolerances, which can be obtained with different process capabilities. A model to describe the effect of material andgeometry on the anisotropic dimensional change is also being developed.
Ilaria Venanzi,Annibale Luigi Materazzi 국제구조공학회 2013 Smart Structures and Systems, An International Jou Vol.12 No.6
In this paper is studied the influence of the uncertain mass distribution over the floors on the choice of the optimal parameters of a hybrid control system for tall buildings subjected to wind load. In particular, an optimization procedure is developed for the robust design of a hybrid control system that is based on an enhanced Monte Carlo simulation technique and the genetic algorithm. The large computational effort inherent in the use of a MC-based procedure is reduced by the employment of the Latin Hypercube Sampling. With reference to a tall building modeled as a multi degrees of freedom system, several numerical analyses are carried out varying the parameters influencing the floors’ masses, like the coefficient of variation of the distribution and the correlation between the floors’ masses. The procedure allows to obtain optimal designs of the control system that are robust with respect to the uncertainties on the distribution of the dead and live loads.
Ilaria Ciavattini 한국이탈리아어문학회 2017 이탈리아어문학 Vol.0 No.52
The aim of this research is to investigate the still unexplored potential of the use of ICT (Information Communication Technology) in language teaching. The reflection will focus primarily on the mainly old fashion grammar teaching in Italian schools. One way to overcome the students “detachment” from grammar is the use of an online platform, which, by means of an inductive-constructivist approach, would lead to an improvement of the pupils’ linguistic and grammatical abilities, as well as meta-linguistic skills. In this article, I will argue that a “new” way to teach language is possible and beneficial, as shown by the good results of an experimental course of Italian held in 2016 in a sixth grade class. The course consisted of "Grammar Experiments": paths of "discovery" of some grammatical phenomena through inductive-constructivist approach by means of the online platform Moodle.
Ilaria Cristofolini,Melania Pilla,Andrea Rao,Stefano Libardi,Alberto Molinari 한국정밀공학회 2013 International Journal of Precision Engineering and Vol. No.
The effect of the sintering and sinter-hardening temperature on the dimensional and geometrical precision of ring-shaped parts was investigated. The parts were produced with a 3%Cr-0.5%Mo-0.5%C steel, compacted to 6.8 g/cm3 and sinter/sinter-hardened at 1250oC, 1300oC and 1350oC. The increase in the sintering temperature enhances the fraction of load bearing section and leads to an expected significant improvement of mechanical properties. Dimensional shrinkage increases with the sintering temperature,however, the dimensional and geometrical precision obtained in all the cases is very good even at very high sintering temperature. Dimensional variations are anisotropic, and the effect of anisotropy was estimated by evaluating the lack of precision attained when green parts are designed assuming an isotropic behavior.
( Ilaria Cutica ),( Valeria Manera ),( Silvia Riva ),( Alessandra Ruzzini ),( Gabriella Pravettoni ),( Marina Zettin ) 서울대학교 인지과학연구소 2014 Journal of Cognitive Science Vol.15 No.2
In literature, several developmental psychology and neuroimaging studies provide converging evidence for the assumption that theory of mind (ToM) has distinct functional and neural subcomponents, dependent on the content of the mentalizing activity, such as emotions, intentions and beliefs. Here we investigated through different ToM tasks whether traumatic brain injury (TBI) patients have different degree of impairment in their ability to make inferences about others` intentions, emotions and false beliefs. Results showed a trend of increasing difficulty from intention items, to emotion items, to false belief items. These results help to clarify some inconsistencies found in previous studies exploring ToM in TBI patients, and point out to the importance of analyzing separately different ToM subcomponents.
Life-cycle-cost optimization for the wind load design of tall buildings equipped with TMDs
Ilaria Venanzi,Laura Ierimonti,Luca Caracoglia 한국풍공학회 2020 Wind and Structures, An International Journal (WAS Vol.30 No.4
The paper presents a Life-Cycle Cost–based optimization framework for wind-excited tall buildings equipped with Tuned Mass Dampers (TMDs). The objective is to minimize the Life-Cycle Cost that comprises initial costs of the structure, the control system and costs related to repair, maintenance and downtime over the building’s lifetime. The integrated optimization of structural sections and mass ratio of the TMDs is carried out, leading to a set of Pareto optimal solutions. The main advantage of the proposed methodology is that, differently from the traditional optimal design approach, it allows to perform the unified design of both the structure and the control system in a Life Cycle Cost Analysis framework. The procedure quantifies wind-induced losses, related to structural and nonstructural damage, considering the stochastic nature of the loads (wind velocity and direction), the specificity of the structural modeling (e.g., non-shear-type vibration modes and torsional effects) and the presence of the TMDs. Both serviceability and ultimate limit states related to the structure and the TMDs’ damage are adopted for the computation of repair costs. The application to a case study tall building allows to demonstrate the efficiency of the procedure for the integrated design of the structure and the control system.
Tackling the Problem of Sulfur Poisoning of Perovskite Catalysts for Natural Gas Combustion
Rosso, Ilaria,Saracco, Guido,Specchia, Vite 한국화학공학회 2003 Korean Journal of Chemical Engineering Vol.20 No.2
LaMn_0.5Mg_0.5O_3 y MgO and LaCr_0.5-xMn_xMg_0.5O_3 y MgO catalysts(x=0-0.25, y=0-17) were prepared, characterized (XRD, BET, SEM-EDS, TEM, FTIR, chemical and atomic absorption analyses), tested for high-temperature methane combustion and aged in presence of SO_2 to investigate sulfur effect on catalytic activity. Different roles of manganese and chromium in the perovskite structure have been assessed:(i) manganese improves the activity of catalysts in the fresh state, whereas chromium worsens it;(ii) owing to its basic nature, manganese makes perovskites more prone to adsorb SO_2 and so less resistant to sulfur poisoning, whereas chromium, owing to its acidic nature, has opposite effects; (iii) the partial solubility of chromium oxide in basic media renders Cr-catalyst regeneration by NH_3 leaching less effective. MgO promotes catalytic activity of fresh LaCr_0.5Mg_0.5O_3 y MgO catalysts and slows down sulfur poisoning of LaMn_0.5Mg_0.5O_3 y MgO and LaCr_0.5Mn_0.5O_3 17 y MgO catalysts only.
Venanzi, Ilaria,Materazzi, Annibale Luigi Techno-Press 2013 Smart Structures and Systems, An International Jou Vol.12 No.6
In this paper is studied the influence of the uncertain mass distribution over the floors on the choice of the optimal parameters of a hybrid control system for tall buildings subjected to wind load. In particular, an optimization procedure is developed for the robust design of a hybrid control system that is based on an enhanced Monte Carlo simulation technique and the genetic algorithm. The large computational effort inherent in the use of a MC-based procedure is reduced by the employment of the Latin Hypercube Sampling. With reference to a tall building modeled as a multi degrees of freedom system, several numerical analyses are carried out varying the parameters influencing the floors' masses, like the coefficient of variation of the distribution and the correlation between the floors' masses. The procedure allows to obtain optimal designs of the control system that are robust with respect to the uncertainties on the distribution of the dead and live loads.