Results 31 to 40 of about 9,777 (202)

A Preliminary Study on the Yang-cheon-cheok (量天尺) in the Late Joseon Dynasty [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2015
We investigated the six remaining Yang-cheon-cheoks (量天尺), which were first described in the Veritable Record of King Sukjong (肅宗實錄). These woodblock sundials from Korea are structurally very similar to a Gyupyo (圭表, gnomon) or an altitude sundial and ...
Sang Hyuk Kim   +2 more
doaj   +1 more source

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

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

Nouvelles contributions à l'étude des cadrans solaires découverts dans les cités grecques de Dobroudja

open access: yesDialogues d'Histoire Ancienne, 2008
Remus Mihai Feraru, New contributions to the study of the sundials discovered in the Greek cities of Dobruja, DHA 34/2, 2008, 65-80. Abstract : Among the artefacts found in the Greek cities of the West coast of the Euxine Sea are a fragment of a ...
Renius Mihai Feraru
doaj   +1 more source

Software to Support Remote Sensing of River Discharge Based on Critical Flow Theory

open access: yesRiver Research and Applications, Volume 42, Issue 4, Page 915-928, May 2026.
ABSTRACT Water resource management requires accurate observations of streamflow but standard field methods for measuring river discharge ( Q ) can be costly and hazardous for equipment and personnel. Remote sensing has become a viable alternative, but many image‐based techniques require field data for calibration, and depth and velocity can seldom be ...
Carl J. Legleiter, Inhyeok Bae
wiley   +1 more source

Complexitatea și ingeniozitatea citirii timpului la 1600

open access: yesArheologia Moldovei
The diptych ivory sundial found in Iași – Centrul de Afaceri, in 1996, has been the central piece in the exhibition ”Underground Iași – Rediscovered (Hi)stories”, organized at the Palace of Culture in Iași by Moldavia’s History Museum within ”Moldova ...
Coralia Costaș
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

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

Integrative QSP Modeling of Cancer Stem Cells in Triple‐Negative Breast Cancer: Impacts on Tumor Immunity and Response to Immune Checkpoint Inhibitors

open access: yesCPT: Pharmacometrics &Systems Pharmacology, Volume 15, Issue 4, April 2026.
ABSTRACT Cancer stem cells (CSCs) contribute to an immunosuppressive microenvironment through complex mechanisms and tumor‐immune interactions. However, the key determinants of CSC characteristics in driving tumor progression, immune suppression, and response to ICIs remain unclear and require systematic investigation.
Junsheng Xue   +10 more
wiley   +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

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