Results 41 to 50 of about 2,344 (157)
Interpretatie van Zonnewijzerfragmenten
Bulletin KNOB, 1991 This paper reaches after a framework to determination of patterns of hourlines on sundials on the basis of a complete, but broken sundial and a small fragment of another one, called Enthinge nr. 25 and nr.
Eugène L.H. Roebroeck
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The prototype of ancient analemmatic sundials (Rostov Oblast, Russia) [PDF]
Archaeoastronomy and Ancient Technologies, 2016 The article presents the results of a study of petroglyphs on a unique stone slab discovered near the kurgan 1 of the kurgan field Varvarinsky I (Rostov Oblast, Russia).
Vodolazhskaya, L.N. +2 more
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Reaction–Diffusion and Diffusion‐Driven Fronts in Reversible Redox Autocatalytic Networks
ChemSystemsChem, Volume 8, Issue 5, September 2026.In addition to the autocatalytic reaction–diffusion oxidation front and the diffusive reduction front, a mixed‐type diffusion‐driven reduction front develops in the presence of oxygen, exhibiting characteristics of both front types. ABSTRACT Autocatalysis plays a critical role in the self‐organization of chemical and biological systems, influencing ...
Stevan Maćešić +2 more
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INTERPRETATION OF THE FUNCTION OF THE OBELISK OF AUGUSTUS IN ROME FROM ANTIQUE TEXTS TO PRESENT TIME VIRTUAL RECONSTRUCTION [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019 About the astronomical use of the obelisk of Augustus on Campo Marzio in Rome, which has already been described by Pliny, well known astronomers and mathematicians like Euler, Marinoni or Poleni have given their expert opinion immediately after it's ...
M. Hiermanseder
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AUGUSTO'S SUNDIAL: IMAGE-BASED MODELING FOR REVERSE ENGENEERING PURPOSES [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 A photogrammetric survey of a unique archaeological site is reported in this paper. The survey was performed using both a panoramic image-based solution and by classical procedure. The panoramic image-based solution was carried out employing a commercial
V. Baiocchi +6 more
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Numerical Methods for Partial Differential Equations, Volume 42, Issue 4, July 2026.ABSTRACT While recent Anderson acceleration (AA) convergence theory [Pollock et al., IMA Num. An., 2021] requires that the AA optimization norm match the Hilbert space norm associated with the fixed point operator, in implementations the ℓ2$$ {\ell}^2 $$ norm is the most common choice. So far there is little research done regarding this discrepancy. To
Elizabeth Hawkins, Leo G. Rebholz
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Improving the Numerical Solution of the Energy Equation in Land Models
Journal of Advances in Modeling Earth Systems, Volume 18, Issue 7, July 2026.Abstract The purpose of this study is to improve simulations of the energy equation in land models. Our objectives are to (a) highlight the shortcomings of current approaches for solving the energy equation in land models; (b) present improved solutions; and (c) evaluate tradeoffs between numerical errors and strict energy conservation in the energy ...
Ashley E. Van Beusekom +2 more
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Art-SanatTimekeeping has been a fundamental necessity throughout human history, essential for maintaining social order and organizing daily life. Archaeological and written sources show that ancient civilizations developed various time measurement tools to meet ...
İbrahim Oğuzhan, Hakan Temir
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Temporalités, 2005 Sundials are still often considered today, wrongly, as simply an artistic outdoor decoration. In fact, they are complex astronomical instruments, not only as conceived but also in actual reality.
Olivier Escuder
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