95 research outputs found
"L'Angelo di fuoco" di V. Brjusov come testo interculturale
No full textLo scopo di questo lavoro consiste nel tentativo di proporre una nuova chiave di lettura del romanzo L’Angelo di fuoco di Valerij Brjusov. E’ possibile ipotizzare nel sottotesto un dialogo evidente e provocatorio dell’autore con Andrej Belyj (e di conseguenza con Vjač. Ivanov) circa la concezione della magia e delle posizioni più estreme del simbolismo fino a giungere alla derisione del concetto dell’Eterno Femminino.The purpose of this paper is to propose a new interpretation of Valery Bryusov’s novel Ognennyj Angel. It’s'possible to suppose that in the subtext the author establishes a clear and provocative dialogue with Andrej Belyj (and consequently with Vjač. Ivanov) about the idea of magic and about the Symbolism most extreme positions up to the mockery of the concept of the Eternal Feminine
Changes in extreme daily precipitation over Africa: insights from a non-asymptotic statistical approach
No full textExtreme precipitation heavily affects society and economy in Africa because it triggers natural hazards and contributes large amounts of freshwater. Understanding past changes in extreme precipitation could help us improve our projections of extremes, thus reducing the vulnerability of the region to climate change. Here, we combine high-resolution satellite data (1981-2019) with a novel non-asymptotic statistical approach, which explicitly separates intensity and occurrence of the process. We investigate past changes in extreme daily precipitation amounts relevant to engineering and risk management. Significant (alpha = 0.05) positive and negative trends in annual maximum daily precipitation are reported in -20 % of Africa both at the local scales (0.05 degrees) and mesoscales (1 degrees). Our statistical model is able to explain -90% of their variance, and performs well (72% explained variance) even when annual maxima are explicitly censored from the parameter estimation. This suggests possible applications in situations in which the observed extremes are not quantitatively trusted. We present results at the continental scale, as well as for six areas characterized by different climatic characteristics and forcing mechanisms underlying the ongoing changes. In general, we can attribute most of the observed trends to changes in the tail heaviness of the intensity distribution (25% of explained variance, 38% at the mesoscale), while changes in the average number of wet days only explain 4% (12%) of the variance. Lowprobability extremes always exhibit faster trend rates than annual maxima (-44% faster, in median, for the case of 100-year events), implying that changes in infrastructure design values are likely underestimated by approaches based on trend analyses of annual maxima: flexible change-permitting models are needed. No systematic difference between local and mesoscales is reported, with locally-varying impacts on the areal reduction factors used to transform return levels across scales
The Pottery Chronological Seriation of the Murghab Delta from the end of the Bronze Age to the Achaemenid Period: a Preliminary Note
No full textIn this short article the author and Maurizio Cattani in the volume devoted to the joint Italian/Russian/Turkmenian activities in south Turkmenistan entitled Archaeological Map of the Murghab delta are dealing with a preliminary analysis of the chronological sequence of the pottery production collected and organized form the field survey conducted from 1989 to 1994 there. The already known and traditional sequence of Yaz I-III and defined as such by the soviet archaeologists, is by the authors enlarged with a post Yaz III horizon, which is crossing, most probably, the Achaemenid and post-Achaemenid period
Comparison of GOES16 Data with the TRACER-ESCAPE Field Campaign Dataset for Convection Characterization: A Selection of Case Studies and Lessons Learnt
No full textConvective updrafts are one of the main characteristics of convective clouds, responsible for the convective mass flux and the redistribution of energy and condensate in the atmosphere. During the early stages of their lifecycle, convective clouds experience rapid cloud-top ascent manifested by a decrease in the geostationary IR brightness temperature (TBIR). Under the assumption that the convective cloud top behaves like a black body, the ascent rate of the convective cloud top can be estimated as (∂TBIR∂t), and it can be used to infer the near cloud-top convective updraft. The temporal resolution of the geostationary IR measurements and non-uniform beam-filling effects can influence the convective updraft estimation. However, the main shortcoming until today was the lack of independent verification of the strength of the convective updraft. Here, Doppler radar observations from the ESCAPE and TRACER field experiments provide independent estimates of the convective updraft velocity at higher spatiotemporal resolution throughout the convective core column and can be used to evaluate the updraft velocity estimates from the IR cooling rate for limited samples. Isolated convective cells were tracked with dedicated radar (RHIs and PPIs) scans throughout their lifecycle. Radial Doppler velocity measurements near the convective cloud top are used to provide estimates of convective updrafts. These data are compared with the geostationary IR and VIS channels (from the GOES satellite) to characterize the convection evolution and lifecycle based on cloud-top cooling rates
Bridging the Boundaries of Science and Technology: Author-Inventors and Quality of Inventions
No full textA growing body of research examines the relationship between science and technology by using a social network lens to look at the collaboration networks between authors and inventors. Building on this research, we study how publishing inventors’ (author-inventors’) structural position in scientific (co-authorship) and technological (co-invention) networks affects the quality of their inventions. We probe author-inventors’ characteristics by identifying those who act as cutpoints—i.e., those who play a pivotal role in holding the two networks together. Cutpoints can be connected to more or less cohesive subgroups of the scientific network and hence have access to more or less diverse knowledge bases. The results of the analysis suggest that author-inventors’ structural position—in particular, whether they are cutpoints and belong to more cohesive subgroups of the scientific network—is highly consequential for the quality of the inventions with which they are involved. We tested our hypotheses in the emerging field of nanotechnology. The theoretical and managerial implications of the results are discussed
El cuento ilustrado como recurso didáctico para la estimulación de habilidades lingüísticas en niños de dos a tres años del Centro de Desarrollo Infantil Carlos Guido Cattani.
No full textThe thesis titled "The Use of Illustrated Stories as a Didactic Resource to Stimulate Linguistic Skills in Children Aged Two to Three Years" focuses on implementing this tool at the Carlos Guido Cattani Child Development Center. The general objective of the research is to propose the use of illustrated stories to improve linguistic skills in young children. The employed methodology was qualitative, based on observing and recording the linguistic behavior of children during storytelling sessions. The main results indicated that illustrated stories positively impact the development of oral language and comprehension in children. The study concludes that illustrated stories are an effective didactic resource for stimulating linguistic development in early childhood, providing significant benefits for both education and the social well-being of children. This research provides valuable information for educators and professionals in the educational field, offering a practical methodology for enhancing language development in similar contexts.El trabajo de titulación titulado "Los cuentos ilustrados como recurso didáctico para estimular habilidades lingüísticas en niños de dos a tres años" aborda la implementación de esta herramienta en el Centro de Desarrollo Infantil Carlos Guido Cattani. El objetivo general de la investigación es proponer el uso de cuentos ilustrados para mejorar las habilidades lingüísticas en niños pequeños. La metodología empleada fue cualitativa, basada en la observación y registro del comportamiento lingüístico de los niños durante las sesiones de lectura de cuentos ilustrados. Los principales resultados indicaron que el uso de cuentos ilustrados tiene un impacto positivo en el desarrollo del lenguaje oral y la comprensión de los niños. La investigación concluye que los cuentos ilustrados son un recurso didáctico eficaz para estimular el desarrollo lingüístico en la primera infancia, aportando beneficios significativos tanto para la educación como para el bienestar social de los niños. Este estudio proporciona información valiosa para educadores y profesionales en el ámbito educativo, ofreciendo una metodología práctica para la mejora del desarrollo del lenguaje en contextos similares.UNACH, Ecuador
Factores asociados al nivel del desarrollo del lenguaje de los niños y niñas de 2 a 3 años del Centro de Desarrollo Infantil “Carlos Guido Cattani”, en el Cantón Alausí.
No full textThe research on "Factors associated with the level of language development of children aged 2 to 3 years old" at the "Carlos Guido Cattani" Child Development Center in Alausí addresses the influences that affect speech and communication at this crucial stage of child development. The qualitative approach involves documentary and field designs and techniques such as direct observation and surveys to better understand these factors. The studied population included 18 children, 18 parents, and nine teachers, allowing an exhaustive analysis without calculating the sample size. The results reveal good emotional and social development in the children and evident perceptual and cognitive advances in their ability to remember names and tell stories. However, potential challenges in family interaction and changes in family dynamics are identified that could affect linguistic development. It is crucial to offer opportunities for reading, conversations, and sensory activities as key strategies to promote language development. In conclusion, variability in children's linguistic development is influenced by factors such as the family environment and early stimulation. Therefore, activities designed to promote language skills, from story reading to sorting games and outdoor activities, are recommended to enrich their communicative and linguistic growth during this crucial stage of child development.La investigación " Factores asociados al nivel del desarrollo del lenguaje de los niños y niñas de 2 a 3 años del Centro de Desarrollo Infantil “Carlos Guido Cattani”, en el cantón Alausí, plantea como objetivo Diseñar un programa integral de estimulación enfocado en los factores asociados al desarrollo del lenguaje en los niños del Centro de Desarrollo Infantil” Carlos Guido Cattani”. La metodología tiene un enfoque cuantitativo, aplica un diseño descriptivo correlacional que abarcó una población de 18 niños, 18 padres y 9 docentes del mencionado centro. Se empleó la encuesta dirigida a los padres y la observación directa de los niños. Los resultados revelaron que los hogares tienen un ambiente familiar positivo, caracterizado por la lectura diaria, interacción verbal frecuente y apoyo emocional, mostraron un desarrollo del lenguaje superior al promedio para la edad, las familias participaban regularmente en actividades de lectura y conversación exhibieron un vocabulario más amplio y una mejor capacidad para estructurar frases simples, hay niños que provenientes de hogares con baja interacción verbal o cambios recientes en la dinámica familiar, como separaciones o mudanzas, presentaron un desarrollo del lenguaje más lento, con dificultades en la pronunciación y en la formación de frases. En conclusión, se diagnosticó que las habilidades lingüísticas de los niños de 2 a 3 años son heterogéneas, influenciadas por factores como el ambiente familiar, la estimulación temprana y la socialización en su entorno. Se diseñó un programa integral diseñado para mejorar la adquisición del lenguaje aborda estos factores a través de actividades lúdicas y estrategias efectivas que apoyan el desarrollo lingüístico individual en un entorno enriquecedor.UNACH, Ecuador
Arte Rupestre nelle Montagne dell’Al-Hajar | Rock Art in the Al-Hajar Mountains
No full textThe paper in this volume summarizes the researches of the author in Oman, with particular reference with the rock art in Northern Oman into the wadis of the Al-Hajar mountain
Analisi di tre prodotti di stima della precipitazione sull'East Africa e sull'Africa Australe
No full textNegli ultimi decenni, l’East Africa (EA) e l’Africa Australe (SA) hanno assistito ad un’intensificazione degli eventi meteo-idrologici estremi, quali inondazioni e siccità con gravi conseguenze sulla vita delle popolazioni. Di fondamentale importanza risulta perciò il monitoraggio della precipitazione e quindi lo sviluppo di prodotti di precipitazione basati su osservazioni satellitari. Essi sono in grado di sopperire alla penuria di dati e all'inadeguatezza delle stime fornite da stazioni pluviometriche. Per questo studio sono stati utilizzati tre dataset ad alta risoluzione spaziale e di lunga durata per descrivere la precipitazione in EA e in SA nel periodo 1983-2017: TAMSAT v3, basato su osservazioni nell'infrarosso termico (TIR) e calibrato con dati pluviometrici climatologici; CHIRPS, anch'esso basato sul TIR ma calibrato con osservazioni nelle microonde (PMW) ed integrato con dati pluviometrici, e MSWEP v2, un dataset relativamente nuovo ed poco validato, generato dalla combinazione di dati di rianalisi, pluviometrici e da PMW. Tali prodotti sono stati quindi confrontati direttamente, superando la tradizionale validazione tramite stazioni pluviometriche. Grazie alle analisi condotte con statistica dicotomica e comparativa a coppie a diverse scale temporali (giornaliera, mensile e stagionale), sono state indagate le analogie e le differenze tra i tre prodotti sia nell'identificazione dei giorni precipitanti sia nella stima quantitativa, in base alla topografia, al clima e al processo meteorologico generante la pioggia. Nell’EA e nel SA, i terreni complessi, come zone montuose o desertiche, ed alcuni meccanismi di formazione della pioggia (sistemi frontali o cicloni extra-tropicali) rappresentano un grosso limite di rilevazione per i prodotti basati sul TIR (CHIRPS e TAMSAT3). MSWEP mostra comportamenti diversi nelle due aree di studio: nell’EA sottostima la precipitazione rispetto agli altri due dataset, nel SA mostra un buon accordo con il prodotto CHIRPS
Studio della variabilità spazio-temporale della precipitazione del Sahel (1983-2021)
No full textIl Sahel è la regione africana che si trova a sud del deserto del Sahara, da sempre
vittima di siccità. Tra gli anni 1970-1980, in particolare, ha attraversato il periodo siccitoso più grave e socio-economicamente destabilizzante. L’aspetto che maggiormente viene dibattuto in merito è se ora la regione stia attraversando un periodo di ripresa da questa siccità e che effetti essa stia comportando, ad esempio, in termini di eventi precipitativi estremi. Per comprendere questo fenomeno ed in generale valutare la variabilità e i trend della precipitazione del Sahel centro-occidentale negli ultimi decenni (1983-2021) è stato utilizzato il data set satellitare TAMSAT v3.1, un prodotto basato su osservazioni nell’infrarosso termico (TIR). Tramite questi dati sono stati ricavati alcuni degli indici di precipitazione definiti dall’Expert Team on Sector-Specific Climate Indices (ET-SCI). Da tali indici sono state prodotte climatologie e serie temporali. Sono stati poi calcolati i trend tramite stimatore di Sen e sono stati osservati i modi di variabilità tramite studio delle EOF. Successivamente sono state correlate le componenti principali del primo modo di variabilità con la SST globale al fine di distinguere driver oceanici. Identificate le aree con correlazione maggiore, sono stati calcolati gli indici delle SST e questi sono stati correlati con gli indici di precipitazione. Da questo studio si osserva un effettivo aumento della precipitazione in termini quantitativi e di giorni precipitanti, con un trend positivo che interessa tutta la regione, seppure con intensità diverse a seconda della specifica sotto-area considerata. Si osserva anche un aumento di eventi precipitativi estremi (EPE), in particolare nell’area sud per gli indici R10mm, R20mm, R95p ed R99p, mentre nella regione centro-nord per gli indici Rxnday. Dallo studio delle correlazioni con gli indici di SST è emersa un’alta correlazione in periodi diversi per gli indici AMO, IOD, MedIndex e TAPOD
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