Search results for "Gelon"

showing 7 items of 7 documents

THE DIASCIA FLOWER AND ITS BEE - AN OIL-BASED SYMBIOSIS IN SOUTHERN AFRICA

1984

As has been formerly shown, the double-spurred flowers of the South African genus Diascia (Scrophulariaceae) produce fatty oil as a primary attractant. Their oil-collecting pollinators have so far remained unknown. It is concluded from the morphology and from direct evidence of flower visitation that the recently established Melittid genus Rediviva represents the co-evolved pollinator group of these plants, at the same time demonstrating the presence of “manual” oil collectors in Southern Africa. The bees must introduce their especially equipped forelegs into the paired spurs of Diascia for harvesting the oil, thereby pollinating the flower. In the described case, a new species, Rediviva em…

AndrenabiologyCalceolariaPollinatorAngeloniaBotanyBowkeriaPlant ScienceRedivivaCentrisbiology.organism_classificationMelittidaeActa Botanica Neerlandica
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Solving Rate of Change Tasks with a Graphing Calculator: a Case Study on Instrumental Genesis

2016

In an increasing number of mathematics classes throughout the world, technology is being used for the teaching and learning of mathematics. But knowledge is limited about the long-term development of students’ mathematical thinking when learning mathematics with the use of technology. This article reports on the development of a student and the role of the graphing calculator (GC) in his learning about derivatives and instantaneous rate of change. This case is compelling, because the student is an intensive user of the GC and develops flexible problem-solving techniques – techniques which differ from those of his peers and from what he was taught in mathematics class. We used the framework …

Class (computer programming)Process (engineering)Computer scienceGraphing calculator05 social sciencesEducational technology050301 educationInstrumentation schemesDerivativeRate of changelaw.inventionTask (project management)Long-termdevelopmentCalculatorlawSituatedMathematics education0501 psychology and cognitive sciencesInstrumentation (computer programming)Graphing calculatorInstrumentation schemesDerivativeRate of changeLong-term developmentInstrumental genesis0503 educationPeriod (music)Instrumental genesis050104 developmental & child psychologyDigital Experiences in Mathematics Education
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Il dono del tiranno. Gelone e il “corno di Amaltea” a Ipponio

2016

L’articolo riprende in esame una testimonianza piuttosto problematica di Duride di Samo, trasmessa da Ateneo, in cui si narra della creazione da parte di Gelone, tiranno dei Siracusani all’inizio del V sec. a.C., di un luogo chiamato “corno di Amaltea”, in bosco nei pressi di Ipponio. A partire dall’analisi del contesto in cui la testimonianza ricorre, nei Deipnosofisti, e dal confronto con le fonti relative alla figura di Amaltea e ai luoghi così denominati nell’antichità, il contributo si propone di suggerire una chiave di lettura per questo episodio che marca gli esordi della politica dei Dinomenidi al di là dello Stretto. This paper examines Douris of Samos’ quite problematic testimony,…

Gelon Deinomenid Hipponion Zeus AmaltheaGelone Dinomenidi Ipponio Zeus Amaltea
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La battaglia di Himera nelle Storie di Erodoto e il sincronismo con Salamina

2022

The very short report of the battle of Himera given by Herodotus’ Histories seems to have the primary aim of supporting a widespread tradition among the inhabitants of Sicily (still circulating at the time when the historian lived) about the true reason preventing Gelon from siding with the Hellenic League against Persians: he was impelled to engage in the battle of Himera, which took place the very same day as the sea battle of Salamis. No celebratory intent emerges from the account of Gelon’s and Theron’s victory over the Carthaginians, since Herodotus wants to report all the versions known to him about the explanations given to Gelon’s refusal to join the Hellenic League; there is no roo…

HerodotuGelonSettore L-ANT/02 - Storia GrecasynchronismDeinomenids’ propagandabattle of Himera
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“Primavera siciliana”: nota a Hdt. VII 162

2021

L'articolo propone una rilettura dell'epilogo del logos siciliano, incluso nel settimo libro delle Storie di Erodoto. L'episodio racconta la visita degli ambasciatori greci alla corte di Gelone, tiranno di Siracusa, che giunsero in Sicilia per chiedere il suo aiuto contro l'imminente attacco dei persiani. Un riesame del dialogo tra gli ambasciatori e il siracusano permette una reinterpretazione della frase finale con cui Gelone congeda gli ambasciatori greci, diversa da quella che si ritrova nei commenti ad Erodoto. The article offers a rereading of the epilogue of the Sicilian logos, included in the Seventh book of the Histories of Herodotus. The episode relates the visit of the Greek amba…

Settore L-ANT/02 - Storia GrecaSicilian logos stories of Herodotus court of Gelonelogos siciliano storie di Erodoto corte di Gelone
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L’exemplum del Dinomenide Gelone tra memoria civica e storiografica

2015

La storia della Sicilia greca è scandita, nei suoi momenti chiave, dalla persistente presenza dell’immagine del Dinomenide Gelone. Questo lavoro analizza le valenze paradigmatiche assunte dalla sua figura nella memoria civica siracusana e nella produzione storiografica; inoltre ricostruisce le dinamiche politiche che hanno spinto i principali tiranni siracusani (da Dionisio I a Ierone II) a stabilire un confronto con Gelone. Il suo exemplum è utilizzato per legittimare azioni politiche e impegno antipunico; particolare attenzione è posta alla Biblioteca storica di Diodoro Siculo e al ruolo che in essa assume la figura del Dinomenide; in relazione a questi aspetti l’opera dell’Agirinense sem…

Settore L-ANT/02 - Storia GrecaThe history of Greek Sicily is marked at its key moments by the persistent image of Dinomenid Gelon. This work analyses the paradigmatic value taken on by his figure in the civic memory of the people of Syracuse and in historiographic production. It also reconstructs the political dynamics which pushed the principal tyrants of Syracuse (from Dionysius I to Hiero II) to establish comparisons with Gelon. His exemplum was used to legitimate political actions and commitment against the Carthaginianparticular attention was also given to the Library of History of Diodorus Siculus and the role that the figure of Dinomenid assumes in itregarding these aspects the work of this author seems to have sometimes the signs of a personal interpretation of history: one that cannot always be explained in relation to the use of the two principal sources for Western history Timaeus and Philistos.
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Pollination of four sympatric species ofAngelonia (Scrophulariaceae) by oil-collecting bees in NE. Brazil

1991

The manner whereby the oil-producing bisaccate flowers ofAngelonia (Scrophulariaceae) are pollinated by female oil-collecting bees is reported for the first time. Observations were made in the Caatinga formation of Pernambuco, NE. Brazil, on four synchronopatric species. These differ in sizes and structural details of the corolla, level of flower exposition, and habitat preferences. All legitimate visitors wereCentris spp. (Anthophoridae):Angelonia hirta was mainly pollinated byC. fuscata andA. pubescens byC. hyptidis; A. bisaccata andA. hookeriana shared an unidentified species. Several exomalopsine, tetrapediine and meliponid bees exploit the flowers less descriminately for oil or pollen,…

biologyPollinationAngeloniaClypeusPlant ScienceCentrisbiology.organism_classificationmedicine.disease_causeOligolectyApoideaPollinatorPollenBotanymedicineEcology Evolution Behavior and SystematicsPlant Systematics and Evolution
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