Results 41 to 50 of about 11,118 (217)

Analysis on the Hour-lines of Yangcheon-cheok [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2017
We studied the hour-lines of six extant Yangcheon-cheoks in Korea. To find whether Yangcheon-cheok was used in the whole area of Korea, we calculated the length of shadows of Yangcheon-cheok on the Korean Peninsula, Nanjing and Beijing as well as ...
Sang Hyuk Kim   +2 more
doaj   +1 more source

The prototype of ancient analemmatic sundials (Rostov Oblast, Russia) [PDF]

open access: yesArchaeoastronomy 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
doaj   +1 more source

Clover Stem Borer Infestation in Sundial Lupine: Recognition and Consequences

open access: yesNatural areas journal, 2020
The clover stem borer (CSB; Languria mozardi) is a native North American beetle whose larvae develop inside the stems of a broad range of herbaceous host plants, including sundial lupines (Lupinus perennis). Sundial lupine is an imperiled species in many
S. Tangren, C. Frye
semanticscholar   +1 more source

Copernicus's Heliograph at Olsztyn -- the 500th Anniversary of a Scientific Milestone

open access: yes, 2017
Exactly 500 years ago, Nicolaus Copernicus drew a lattice of lines on a panel above the doorway to his rooms at Olsztyn Castle, then in the Bishopric of Warmia.
Fischer, Gordon, Graßhoff, Gerd
core   +1 more source

Interpretatie van Zonnewijzerfragmenten

open access: yesBulletin 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
doaj   +1 more source

INTERPRETATION OF THE FUNCTION OF THE OBELISK OF AUGUSTUS IN ROME FROM ANTIQUE TEXTS TO PRESENT TIME VIRTUAL RECONSTRUCTION [PDF]

open access: yesThe 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
doaj   +1 more source

The power of the past: materializing collective memory at early medieval lordly centres

open access: yesEarly Medieval Europe, Volume 34, Issue 1, Page 34-69, February 2026.
The repurposing of earlier sites and monuments is an enduringly popular theme in early medieval archaeology, but in England it has attracted little interest among Late Saxon and early post‐Conquest studies. From the tenth century, however, an increasingly prevalent pattern is discernible of secular lords locating their power centres in relation to ...
Duncan W. Wright   +7 more
wiley   +1 more source

SUNDIALS

open access: yesACM Transactions on Mathematical Software, 2005
SUNDIALS is a suite of advanced computational codes for solving large-scale problems that can be modeled as a system of nonlinear algebraic equations, or as initial-value problems in ordinary differential or differential-algebraic equations. The basic versions of these codes are called KINSOL, CVODE, and IDA, respectively. The codes are written in ANSI
Alan C. Hindmarsh   +6 more
openaire   +2 more sources

AUGUSTO'S SUNDIAL: IMAGE-BASED MODELING FOR REVERSE ENGENEERING PURPOSES [PDF]

open access: yesThe 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
doaj   +1 more source

KiDS0239-3211: A new gravitational quadruple lens candidate [PDF]

open access: yes, 2018
We report the discovery of a candidate to quadrupole gravitationally lensed system KiDS0239-3211 based on the public data release 3 of the KiDS survey and machine learning ...
Agnello, A.   +7 more
core   +2 more sources

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