Search results for "Coins"

On the stability of stablecoins

2021

This paper investigates the volatility processes of stablecoins and their potential stochastic interdependencies with Bitcoin volatility. We employ a novel approach to choose the optimal combination for the power law exponent and the minimum value for the volatilities bending the power law. Our results indicate that Bitcoin volatility is well-behaved in a statistical sense with a finite theoretical variance. Surprisingly, the volatilities of stablecoins are statistically unstable and contemporaneously respond to Bitcoin volatility. Also, whereas the volatilities of stablecoins are not Granger-causal for Bitcoin volatility, lagged Bitcoin volatility exhibits Granger-causal effects on the vol…

Viduslaiku Latvijas naudas attīstības galvenie posmi: diploma darbs

1928

Solid-state electrochemical characterization of emissions and authorities producing Roman brass coins

2020

[EN] The voltammetry of immobilized particles (VIMP) is applied to describe the solid state electrochemistry of brass. This methodology, which involves sampling at the nanogram level, is applied to discriminate mints/authorities producing different Roman monetary emissions covering since the Republic (88 BCE) to Domitianus (55-96 CE) Upon attachment to graphite electrodes in contact with aqueous acetate buffer at pH 4.75, well defined voltarnmetric responses were obtained centered on Cu- and Zn-localized signals whose intensity can be correlated to EMP data, being sensitive to the contents of Zn (15-30 wt.%) and Sn (0.01-1.1 wt.%). Voltammetric data, combined with ATR-FTIR and FIB-PESEM/EDS…

Mercenari italici in viaggio verso l’entroterra della Sicilia? Il contributo delle evidenze numismatiche e archeologiche

2014

The subject of the contribution is the analysis of a series of numismatic evidences, coming from Amorella, Monte Raffe, Castellazzo di Marianopoli, Santa Caterina di Villarmosa, through which it is possible to observe how, from the mid-4th century BC, the hinterland had become a veritable enclave of mercenaries. These are allogeneic groups, who presumably arrived in Sicily from the Italian peninsula to serve as soldiers in the ranks of the Dionysian armies, and were subsequently exhorted or chose to settle permanently in the indigenous communities of the interior

Genetic Evidence of the Black Death in the Abbey of San Leonardo (Apulia Region, Italy): Tracing the Cause of Death in Two Individuals Buried with Co…

2021

The Abbey of San Leonardo in Siponto (Apulia, Southern Italy) was an important religious and medical center during the Middle Ages. It was a crossroads for pilgrims heading along the Via Francigena to the Sanctuary of Monte Sant’Angelo and for merchants passing through the harbor of Manfredonia. A recent excavation of Soprintendenza Archeologica della Puglia investigated a portion of the related cemetery, confirming its chronology to be between the end of the 13th and beginning of the 14th century. Two single graves preserved individuals accompanied by numerous coins dating back to the 14th century, hidden in clothes and in a bag tied to the waist. The human remains of the individuals were …

Sekaiza | Sekeiza | Sekaisa

2022

La ceca de Sekaiza se localizó en el yacimiento de Poyo de Mara, hasta ca. 153 a.C., y posteriormente se desplazó al yacimiento de Belmonte, permaneciendo en ese lugar hasta mediados del siglo I a.C., quizás fue destruida durante las Guerras Sertorianas (Burillo y Ostalé 1984: 305-309; Gomis 2001: 33; Burillo 2006: 203-240; Asensio 2001: 89). Se ha discutido la posibilidad de que esta ceca y Bilbilis, dada su proximidad, emitieran moneda de manera simultánea (Burillo, Ostalé 1984), aunque Villaronga (1988) propone una jerarquización de sus emisiones que las haría compatibles. Es una de las cecas celtibéricas con mayor volumen de producción y cantidad de hallazgos. La producción monetaria ha…

Collezioni numismatiche dei Musei della Provincia di Caltanissetta

2014

The contribution presents the numismatic collections of the province of Caltanissetta, focusing on the formation and the peculiarities of the composition.

Rinvenimenti monetali dall’area centro-meridionale della Sicilia

2007

Object of the contribution are the Roman coins found in central-southern Sicily. These are few specimens, almost always found in an isolated state and rarely known with the context of discovery, which, however, allow us to advance some reflections concerning the occupation of the territory. In particular, numismatic evidence from Gela would seem to suggest that the city continued to be frequented even after its destruction in 282 BC.

Rinvenimenti monetali e contesto di scavo. Un ripostiglio di monete puniche da Gela

2018

The excavations in Capo Soprano country at Gela (1999-2001) have hallowed to recover a living quarter, in which was a hoard of 17 bronze coins of Punic Sicily with female head and horse in front of palm-tree. The stratigraphic excavation of the quarter has permitted to find two living phases, sealed by collapsed roofs and walls. The excavation has supplied information concerning the relative chronology of the layers and the walls, while the stratigraphic association between pottery and coins offers information concerning the absolute chronology. These elements also make it possible to consider the siege of Gela by Agathokles (317-309 B.C.) as the terminus ante quem for the ancient phase. Si…

Rinvenimenti monetali da Monte Raffe

2009

The contribution collects and analyzes all the coin finds from the anellenic site of Monete Raffe (CL), both single and hoarded, some of which, recently discovered, come from strata in association with other materials