Results 11 to 20 of about 9,335 (206)

Design and Validation of a Passive Solar Tracking Sensor Based on Gnomon Shadow Analysis

open access: yesInternational Journal of Photoenergy
Solar tracking is essential for efficiency, yet current market solutions present a trade-off: Active systems are precise but expensive and computationally demanding, while low-cost passive systems (e.g., LDRs) often lack accuracy.
Job Ordaz-Castillo   +4 more
doaj   +2 more sources

The Principle and Structure of the Gyupyo(Gnomon) of King Sejong's Reign in Choson Dynasty [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2006
For a reconstruct draft of the Gyupyo (Gnomon) in King Sejong Era, we collected a lot of documents of the Choson Dynasty. With the result we made a reduced model by 1/10 and drawing set for the Gnomon in Sejong Era.
Yong Sam Lee   +3 more
doaj   +1 more source

Employment in public sector - empirical evidence from Georgia [PDF]

open access: yesCES Working Papers, 2023
This paper aims to assess employment in Georgia’s public sector and study job creation factors. During the last decade, employment in the public sector has increased, and its share in total employment is, on average, 22.5%.
Egnate SHAMUGIA
doaj  

orientación de las iglesias románicas: los métodos de Gisemundus de Ripoll (f. 850)

open access: yesEGA, 2022
Existen pocas evidencias sobre el conocimiento científico en la praxis de la geometría medieval. Entre estas se encuentran los métodos del tazado de la orientación de los edificios sacros, y ejemplo de ello son un grupo de iglesias situadas en el valle ...
Josep Lluis i Ginovart   +2 more
doaj   +1 more source

Analemmatic and horizontal sundials of the Bronze Age (Northern Black Sea Coast) [PDF]

open access: yesArchaeoastronomy and Ancient Technologies, 2013
The paper presents the results of a study of unique slab with images of Srubna burial of tumuli group Popov Yar-2 (Ukraine) and slab of Srubna burial of tumulus field Tavriya-1 (Russia). A distinctive feature of the images is the orderliness and symmetry
Vodolazhskaya, L.N.
doaj   +1 more source

The Research of Northern Labyrinths as Navigation Network Elements [PDF]

open access: yesTransNav, 2016
The authors of the article consider the stone labyrinths as solar calendars. In the center of these structures there are usually already installed gnomons ? vertical objects that give shade.
Alina Paranina, Roman Paranin
doaj   +1 more source

Kako vemo, da so stari Slovani poznali gnomone?

open access: yesStudia Mythologica Slavica, 2022
Pokončni stebri so tudi del mitične pokrajine starih Slovanov. Na dejstvo, da je bil tak steber uporabljen kot gnomon, je mogoče sklepati iz obstoja učinkov njegovega delovanja, ki jih najdemo v pokrajini: smeri neba, datumsko pomembni azimuti sončnega ...
Andrej Pleterski
doaj   +1 more source

Cuestiones de práctica de Geometría y de Goniometría para el trazado de la orientación en los cenobios hispánicos (siglos IX-XII)

open access: yesInformes de la Construccion, 2022
La primera operación de un edifico sacro cristiano es su orientación. Las liturgias (s. IX-XII) determinan una alineación (E-O), la precisión de algunas iglesias, con Az muy próximo a 90º y con una altura del horizonte (ASS) > 0º, indican la utilización
Josep Lluis i Ginovart   +1 more
doaj   +1 more source

Inverted analemmatic sundial of the Bronze Age [PDF]

open access: yesArchaeoastronomy and Ancient Technologies, 2022
This article describes the study, using the methods of digital and computational archeology, of a Bronze Age limestone slab with cup marks, discovered during the archaeological excavations of kurgan 1 of the kurgan grave field Prolom II, located in the ...
L.N. Vodolazhskaya
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

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