119,463 research outputs found
Gio Ponti e l'”amore dell'antichità"
No full textBreve analisi del rapporto tra Gio Ponti e i repertori della cultura classica per la creazione delle decorazioni per la Richard-Ginori di Docci
Potential of remote sensing to predict species invasions: A modelling perspective
No full textUnderstanding the causes and effects of species invasions is a priority in ecology and conservation biology. One of the crucial steps in evaluating the impact of invasive species is to map changes in their actual and potential distribution and relative abundance across a wide region over an appropriate time span. While direct and indirect remote sensing approaches have long been used to assess the invasion of plant species, the distribution of invasive animals is mainly based on indirect methods that rely on environmental proxies of conditions suitable for colonization by a particular species. The aim of this article is to review recent efforts in the predictive modelling of the spread of both plant and animal invasive species using remote sensing, and to stimulate debate on the potential use of remote sensing in biological invasion monitoring and forecasting. Specifically, the challenges and drawbacks of remote sensing techniques are discussed in relation to: i) developing species distribution models, and ii) studying life cycle changes and phenological variations. Finally, the paper addresses the open challenges and pitfalls of remote sensing for biological invasion studies including sensor characteristics, upscaling and downscaling in species distribution models, and uncertainty of results. © The Author(s) 201
Reazioni avverse cardiovascolari
No full textSi tratta di una rassegna delle reazioni avverse a farmaci sull'apparato cardiovascolar
Modelli per l\u27insegnamento pratico della costruzione dei ponti metallici, esistenti nel Gabinetto di ponti della R. Scuola di applicazione in Padova
No full text46 illustrazioni di modelli di ponti metallici.
La maggior parte di questi modelli rappresenta, in grandezza 1/10 del vero, particolari di opere esistenti. I modelli vennero eseguiti dal meccanico Nardin Carlo, inserviente della Scuola, sotto la direzione del prof. Pio Chicchi dal 1860 al 1899 e del prof. L. V. Rossi dal 1899 in poi
Attaccamento romantico e qualità della relazione di coppia nei giocatori d’azzardo patologici
No full textIntroduzione: Il gioco d’azzardo patologico è una condizione che ha un impatto significativo e negativo sulla qualità delle relazioni di coppia (Dickson-Swift et al., 2005). Scopo del presente lavoro è pertanto quello di approfondire gli aspetti qualitativi della relazione di coppia e dello stile di attaccamento romantico, sia nei giocatori d’azzardo che nei loro partner.
Metodo: 35 coppie in cui un partner era un giocatore d’azzardo patologico e 45 coppie composte da partner che non presentavano comportamenti patologici di gioco hanno partecipato al presente studio. A tutti i partecipanti è stata somministrata la versione italiana dell’Experiences in Close Relationships-Revised (ECR-R: Fraley et al., 2000; Picardi et al., 2002) e la Romantic Relationship Quality (RQS: Ponti et al., 2010). I dati sono stati analizzati attraverso analisi della varianza multivariata (MANOVA).
Risultati. Le analisi hanno evidenziato che, sia i giocatori d’azzardo patologici che i loro partner, presentano un attaccamento più insicuro, sia di tipo ansioso che evitante, e percepiscono la qualità della loro relazione di coppia come più negativa rispetto ai soggetti del gruppo di controllo. In particolare, mentre i giocatori percepiscono un minor aiuto e sicurezza da parte dei partner, i partner dei giocatori riportano una peggior qualità rispetto a tutte le dimensioni di coppia indagate: maggior conflitto e minore aiuto, sicurezza, intimità, compagnia.
Conclusioni. In linea con la letteratura, i risultati evidenziano una minore qualità della relazione di coppia quando un membro è un giocatore d’azzardo patologico. Tuttavia, tale percezione appare nettamente peggiore nei partner che non nei giocatori d’azzardo
MATERNAL PRENATAL ATTACHMENT: A STUDY ON RELATIONAL PROTECTIVE FACTORS
No full textLiterature has widely verified that the quality of prenatal attachment significantly influences mother’s and newborn’swell-being (Tani et al., 2017a,b; Walsh et al., 2014; Laxton-Kane & Shade, 2002).The aim of this study was to analyze the protective relational factors of prenatal attachment by exploring the role that the social support mothers perceive during pregnancy and the quality of their relationships with their own parents and partners plays in influencing the maternal prenatal attachment to child.
161 women (Mage = 31.63, SD = 4.88) at 31-32 week of gestation were recruited for the present study.
The Parental Bonding Instrument (PBI, Parker et al., 1979;Bonaiuto et al., 1997) was used to assess the quality of women’s relationships with their mothers and fathers.
The Romance Qualities Scale (RQS; Ponti et al., 2010) was employed to measure the quality of the women’s romantic relationships.
The Maternal Social Support Scale (MSSS, Webster et al., 2000;Dabrassi et al., 2009) was used to assess the maternal perceived social support.
Finally, the Prenatal Attachment Inventory (PAI, Müller, 1993;Della Vedova et al., 2008) was used to measure the mother’s attachment bond to her unborn child.
A linear regression analysis was conducted with prenatal attachment as the dependent variable, and maternal social support and relationships with mother, father and partner as predictors.
In line with previous studies, the perceived social support during pregnancy (Doan & Zimermann, 2008; Tani et al., 2017a) and quality of couple relationship (Barone et al., 2014; Walsh et al., 2014) positively affect prenatal attachment to the unborn child. On the contrary, the quality of mothers’ relationships with their parents was not a significant predictor of their prenatal attachment.
In conclusion, perceiving support from their social network and having a good couple relationship during pregnancy enhance feelings of well-being, fostering a good prenatal attachment bond
Implementation, Elimination of Weakly Dominated Strategies and Evolutionary Dynamics
No full textThis paper studies convergence and stability properties of Sjostrom's (1994) mechanism, under the assumption that boundedly rational players find their way to equilibrium using monotonic evolutionary dynamics and best-reply dynamics. This mechanism implements most social choice functions in economic environments using as a solution concept one round of deletion of weakly dominated strategies and one round of deletion of strictly dominated strategies. However, there are other sets of Nash equilibrium, whose payoffs may be very different from those desired by the social choice function. With monotonic dynamics, all these sets of equilibrium contain limit points of the evolutionary dynamics. Furthermore, even if the dynamics converge to the "right" set of equilibria (i.e., the one which contains the solution of the mechanism), it may converge to an equilibrium which is worse in welfare terms. In contrast with this result, any interior solution of the best-reply dynamics converges to the equilibrium whose outcome the planner desires. (Copyright: Elsevier)
Deconstructing the control of the spotted alfalfa aphid Therioaphis maculata
No full textThe control of insect pests and other taxa may be a result of many factors that are difficult to separate and quantify. Introduced parasitoids, host plant resistance, pathogens and native predators led to the successful control of the spotted alfalfa aphid (SAA; Therioaphis maculata Monell) in California and elsewhere, although the relative contribution of each factor remained largely unknown. The relative contribution of each control factor was estimated using a weather-driven physiologically-based demographic system model consisting of alfalfa, SAA, its three exotic parasitoids [Aphelinus semiflavus Howard, Praon palitans Muesebeck and Trioxys complanatus (Quilis)], a native coccinellid beetle [Hippodamia convergens (Guérin-Menéville)], a fungal pathogen [Erynia neoaphidis Remaudière & Hennebert (Zygomycetes: Entomophthorales)] and host plant resistance (HPR). Daily weather data for the period 1995-2006 from 142 locations in Arizona and California were used to drive the model. The factors were introduced to the model singly or in combination to assess their effects in suppressing simulated SAA populations using SAA-daysm-2year-1 (i.e. density) as the metric of control. Data from selected runs were mapped using the geographic information system grass (http://grass.osgeo.org). The simulation data across all factor combinations, years and locations were summarized using linear multiple regression, with the dependent variable being log10SAA-daysm-2year-1 and the independent variables being the presence-absence (0, 1) of the various factors and their interactions. Marginal analysis of the regression model (∂y/∂xi) enabled separation of the average effects of the different factors (xi) given the average effects of the other factors. Alone, each factor failed to control SAA, as did combinations of the parasitoids and coccinellid predation. Control was predicted across all ecological zones only when all mortality factors were included. The marginal analysis suggests that the order of importance of the mortality factors is HPR > coccinellid beetles > T. complanatus>P. palitans>A. semiflavus > the fungal pathogen. The variability of control by coccinellid beetles and the fungal pathogen was high and hence unreliable. © 2013 The Royal Entomological Society
Analysis of invasive insects: Links to climate change
No full textClimate change is expected to alter the geographic distribution and abundance of many species, to increase the invasion of new areas by exotic species and, in some cases, to lead to species extinction. Th is chapter reviews some of the links between invasive insects and climate change. Th e effects of climate change on insect pest populations can be direct, through impacts on their physiology and behaviour, or indirect, through biotic interactions (i.e. bottom-up and top-down effects). Anthropogenic climate and global change is expected to be a major driver in the introduction, establishment, distribution, impact and changes in the efficacy of mitigation strategies for invasive species. To address these problems, we must be able to predict climate change impacts on species distribution and abundance. Commonly used ecological niche model ling approaches have implicit assumptions about the biology of the target species and attempt to characterize the ecological niche using aggregate weather and other factors in the area of recorded distribution. More holistic physiologically based demographic modelling approaches explicitly describe the biological and physio logical responses of species to weather and the species they interact with on fine temporal and spatial scales. Th e geographic distribution and relative abundance of four invasive insect pests are reviewed under observed and +2°C weather scenarios across the USA and Mexico: the tropical New World screwworm, the pink bollworm, the Mediterranean fruit fly (i.e. medfly) and the olive fly. Th e distribution of the olive fly is examined across the Mediterranean basin to illustrate the transferability of the model to analyses of new regions and climate change scenarios. © CAB International 2014
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