154 research outputs found
Comparing long short-term memory and convolutional neural networks in {SYM}-H index forecasting
No full textBelwo; Lay lay
No full textIsirka Heellada; codsi. Belwo, soosaare: Cabdi Shineemo, 1943; Lay-lay. waxaa loo adeegsadaa marka la qaadayo: hadal, cod rageed, kaban. Francesco Giannattasio ayaa 18/12/84, isagoo jooga Moqdisho (gurigiisa Liido)ka duubay xeesaha caanka ah Cabdillaahi Maxamuud “Qarshi” (oo noolaala 1924-1997?). Waxaa duubistaas ka bayb qaatay Aweys Maxamed Waasuge, oo kala shaqaynaayay Giannatasio xagga baarista muusikada soomaaliyeed, isagoo markaas ka ahaa Masraxa Qaranka Soomaaliyeed soosaare 19984-89.._-_Genesi dell'Heello (nuova canzone somala); su richiesta. "Belwo", autore: Cabdi "Shineemo", 1943; "Lay lay". Modo di esecuzione: parlato, voce maschile, kaban (liuto). Registrazione effettuata da Francesco Giannattasio il 18 dicembre 1984 a Mogadiscio (nella propria abitazione al Liido), con il cantante e suonatore di kaban (liuto yemenita) Cabdillaahi Maxamuud “Qarshi” (1924-1997?), massimo esponente della nuova canzone (heello) e fra i maggiori autori della canzone politica somala. Partecipa alla registrazione Aweys Maxamed Waasuge, allora regista del Teatro Nazionale Somalo e dal 1984 al 1989 collaboratore di Giannattasio alla ricerca sulla musica somala._-_Origin of the ‘heello’ (new Somali song), in request. ‘Belwo’, author: Cabdi "Shineemo", 1943; "Lay lay". Execution: lyrics, male voice, ‘kaban’ (lute). Recorded by Francesco Giannattasio on December, 18th 1984 in Mogadishu (at his place in Liido), with the singer and ‘kaban’ player Cabdillaahi Maxamuud “Qarshi” (1924-1997?), one of the most important representatives of the new song (heelo) and among the main authors of the Somali political song. In the presence of Aweys Maxamed Waasuge, who was the Director of the National Somali Theatre and, from 1984 to 1989, a collaborator in Giannattasio’s research on the Somali music
A consistent model of the initiation, early expansion, and possible extinction of a spark-ignited flame kernel
No full textModelling the establishment and growth of spark-ignited (SI) flame kernels has always been a topic of great interest, especially due to their key role in affecting the performance of SI engines. A major issue is that the unsteady conditions and the small kernel size hinder the application of the typical (both linear and non-linear) flame stretch correlations, valid only long after the ignition stage. Overcoming such limitations, this work presents a novel, mathematically consistent, and compact model that enables prediction of flame kernel initiation and early expansion, including its possible extinction. Firstly, spark-driven initiation models from literature are discussed, and an effective flame kernel initiation method is proposed. Then, the expansion model is defined complementing the mass, energy, and species conservation equations for the spherical kernel with the reactant and temperature profiles outside of it using the theory of transient thermodiffusive flames. After accounting for the convective flow caused by the combustion-induced density reduction and the variable thermodynamic properties of the reacting fuel/air mixture, the result is a two-equation model that predicts the kernel expansion even up to its possible extinction due to flame stretch. After calibration of the expansion model, successful validation is achieved against literature data on lean propane/air flames, and the influence of the model parameters is examined in detail. The proposed expansion model is formulated also aiming for inclusion into the simulation of combustion in SI engines, enabling more accurate predictions at part loads, as well as more effective estimation of the cycle-to-cycle variation thanks to the good model sensitivity to the parameters most affecting the ignition
Giacomo Leopardi lettore di Plutarco
No full textThis paper deals with the different features of Plutarch's presence in Leopardi's poems and prose compositions. By examining mentions of Leopardi's studies on Plutarch, linguistic references and textual quotations from Vitae and Moralia the author shows that the poet had a comprehensive knowledge of Plutarch's works and he was deeply influenced by the ancied writer
La philia tra Moralia e Vitae
No full textThe paper explores the importance of the idea of philia in the whole corpus Plutarcheum. First the author gives a brief survey of the works, lost writings and fragments in which Plutarch deals with the theme. Then she draws attention on some passages from Moralia and VItae particularly significant to understand the meaning of philia in Plutarch's ethical-political thought, connected with the historical and cultural context
The Sardinian coast, an uninhabitaded place of historical transformations
No full textThe Sardinian coast have been the scene of continuous transformations linked to the activity and the history of human population, contrary to what might suggest a coastal area characterized for a long time by a low settlement density. The boundary space between land and sea was the only border between the island of Sardinia and the ‘outside’ and a place of continuous exchange and change with positive or negative consequences: trade between Nuragic and Mycenaean people, conquest by Romans, continuous raids of Arabs (VII-VIII sec. AD) and then Ottomans (XVI sec.), until recent changes for touristic purposes. The signs of these modifications on the landscape are at times visible, other times partially or totally disappeared. All these signs affect territories not only at the landscape scale, but also the architectural and material scale. In fact, the industrial construction techniques have influenced design, replacing traditional materials and techniques. The use of local stone represented the land mark on the human landscape, today instead characterized by materials, techniques and architectural styles homogeneous along the Sardinian and Mediterranean coast. For research purposes, but even more for the dissemination of knowledge, the representation of these transformations still presents several operating difficulties, especially for the fact that adding spatial and temporal information involves confusion. The description of these sequences of signs as historical layers is an important challenge to promote an aware observation of the cultural landscape, not only among tourists, but also among local people. Thus, the goal of the work is to propose solutions for the representation of places, examining a part of the Sardinian western coast as a case study. These outcomes can have implications for the study of the ‘land as palimpsest’ and also in order to raise the awareness of cultural heritage. The paper will present the results of the case study analysis, in terms of graphical representation; secondly, it will try to propose ICT tools that can be integrated with territorial analysis and facilitate the comprehension of the landscape
a) Carfo dhayiba; b) Dhalaaliso
No full text"Carfo dhayiba" oo curiyay Sh. Yuusuf Al-Baxar; "Dhalaaliso" oo soo saaray Sh. Caaqib; digri codsi lagu sameeyey iyo hordhacii sheekha F. Giannattasio ayaa duubay 17/43/85, isagoo jooga jardiinka guriga Sh. Caqiib Cabdullaahi Jaamac "Qumbixaali" oo ka tirsan dariiqada Saylaciya (laan ka tirsan Qaadiriya). Waxaa duubistaas ka qayb qaatay Aweys Maxamed Waasuge, oo kala shaqaynaayay Giannatasio xagga baarista muusikada soomaaliyeed, isagoo markaas ka ahaa Masraxa Qaranka Soomaaliyeed soosaare 1984-89 ._-_"Carfo dhayiba" (Odore gradevole), composta da Sheekh Yuusuf Al-Baxar; "Dhalaaliso" (Colei che ti fa intenerire), autore Sheekh Caaqib; digri, su richiesta e introduzioni parlate dello Sheekh. Registrazione effettuata da Francesco Giannattasio il 17 aprile 1985 a Mogadiscio, nel giardino dell'abitazione di Sheekh Caaqib Cabdullahi Jamac "Qunbixaali", esponente della dariiqo Seyliciya (filiazione della Qaadiriya). Partecipa alla registrazione Aweys Maxamed Waasuge, allora regista del Teatro Nazionale Somalo e, dal 1984 al 1989, collaboratore di Giannattasio alla ricerca sulla musica somala._-_"Carfo dhayiba" (Pleasant smell), composed by Sheekh Yuusuf Al-Baxar; "Dhalaaliso" (The one who softens you), author Sheekh Caaqib; dhikr on request and spoken introductions of the Sheekh. Recorded by Francesco Giannattasio on April, 17th 1985 in Mogadishu, in the garden of Sheekh Caaqib Cabdullahi Jamac "Qunbixaali" house, member of the dariiqo Seyliciya (affiliated to Qaadiriya). In the presence of Aweys Maxamed Waasuge, director of the Somali National Theatre and Giannattasio's collaborator in his research on Somali music from 1984 to 1989
Extension and Validation of a 1D Model Applied to the Analysis of a Water Injected Turbocharged Spark Ignited Engine at High Loads and over a WLTP Driving Cycle
No full textThe technique of liquid Water Injection (WI) at the intake port of downsized boosted SI engines is a promising solution to improve the knock resistance at high loads. An existing 1D engine model has been extended to improve its ability to simulate the effects of the water injection on the flame propagation speed and knock onset. The 1D model is validated against experimental data collected at different engine speeds and loads for a twin-cylinder turbocharged SI engine. The model predictions are compared with the experimental data, in terms of in-cylinder pressure cycle, burn rate profile and knock propensity. The combustion process is predicted quite well, except for some inaccuracies in the early stage of combustion. Both experimental and numerical data confirm that the WI technology is able to improve significantly the fuel consumption of the tested engine under high-load knock-limited operation. In a second stage, the validated model is used to build-up a complete engine operating map aimed at investigating the potential of WI technique to improve the fuel economy of a segment A vehicle. A reduced impact of WI is observed, since a knock-free operation occurs along most of the WLTP cycle
Ionosphere Monitoring with Remote Sensing
No full textCharacterising the physical properties of the Earth’s ionosphere is fundamental to shed light on the dynamic processes occurring therein on a wide range of both spatial and temporal scales and to understand several phenomena relevant to Space Weather [...
Ionosphere Monitoring with Remote Sensing Vol II
No full textUnveiling the physical properties of the Earth’s ionosphere is crucial for the comprehension of the dynamic processes that occur within it across various spatial and temporal scales [...
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