Results 41 to 50 of about 6,030 (145)
Abstract Demonstrating the existence of a soaring demand for strategic materials in fifteenth‐century Rome, the article pioneers research in the late medieval trade in saltpetre, the irreplaceable, rare component of gunpowder, indispensable for waging war following the diffusion of artillery technology.
Fabrizio Antonio Ansani
wiley +1 more source
MAGIC detection of short-term variability of the high-peaked BL Lac object 1ES 0806+524 [PDF]
The high-frequency-peaked BL Lac (HBL) 1ES 0806+524 (z = 0.138) was discovered in VHEγ rays in 2008. Until now, the broad-band spectrum of 1ES 0806+524 has been only poorly characterized, in particular at high energies.
M. C. J. Aleksi'c +282 more
semanticscholar +1 more source
Shared governance as a pathway to regional cooperation and development through the ItaipuCorpus
Abstract Motivation Cross‐border cooperation remains a critical challenge for sustainable development in regions marked by historical rivalries, geopolitical asymmetries, and socioenvironmental vulnerabilities. The Itaipu Binacional Hydroelectric Plant, jointly governed by Brazil and Paraguay, offers a unique case for examining how shared governance ...
Júlia Souza Luiz +1 more
wiley +1 more source
Abstract Sustained long‐distance trade in the early modern era necessitated institutional mechanisms capable of solving three interrelated challenges: the need to mobilize an unprecedented volume of capital and to lock it in for long periods of time, ways of mitigating the principal–agent problem across continents, and methods to internalize and ...
Juan José Rivas Moreno
wiley +1 more source
This article traces the presence of enslaved children in early medieval narrative sources, especially hagiographies, and looks into the relationship between their historicity and their literary functions. While topoi such as the ransoming or redemption of slaves are acknowledged, this article argues that despite these motifs, narrative sources offer ...
Danny Grabe
wiley +1 more source
Thermodynamics of Heisenberg ferromagnets with arbitrary spin in a magnetic field [PDF]
The thermodynamic properties (magnetization, magnetic susceptibility, transverse and longitudinal correlation lengths, and specific heat) of one- and two-dimensional ferromagnets with arbitrary spin $S$ in a magnetic field are investigated by a second ...
I. Junger +14 more
semanticscholar +1 more source
The emergence of double entry bookkeeping
Abstract Double entry account books of medieval Italian merchants and bankers have been extensively used as primary sources by historians of several disciplines interested in business, trade, commodities, markets, sources, prices, interest rates, exchange rates, tariffs, taxes, wages, rents, agents, networks, and many other related topics.
Alan Sangster
wiley +1 more source
ABSTRACT Clear communication between government administrations and citizens is a challenge in democratic societies. Public administration texts often contain technical legal terms, essential to convey specialized knowledge with precision but often impenetrable to non‐experts.
Sabela Fernández‐Silva +1 more
wiley +1 more source
Abstract We examine the Amsterdam phase of the 1772–3 financial crisis using the British experience in the same episode as comparative context. We conclude that, notwithstanding some direct exposures by Amsterdam institutions to the principals of the London crisis, the main linkage between the two outbreaks was the requirement for cash margin on loans ...
Stein Berre, Paul Kosmetatos
wiley +1 more source
Optical and Radio variability of the Northern VHE gamma-ray emitting BL Lac objects [PDF]
We compare the variability properties of very high energy gamma-ray emitting BL Lac objects in the optical and radio bands. We use the variability information to distinguish multiple emission components in the jet, to be used as a guidance for spectral ...
E. Observatory +17 more
semanticscholar +1 more source

