Results 11 to 20 of about 9,777 (202)
Abstract Many core human activities require an understanding of time. To coordinate rituals, plan harvests and hunts, recall histories, keep appointments, and follow recipes, we need to grapple with invisible temporal structures like durations, sequences, and cycles. No other species seems to do this.
Cooperrider K.
europepmc +2 more sources
Analemmatic and horizontal sundials of the Bronze Age (Northern Black Sea Coast) [PDF]
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.
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Defocus Controller for a Rotatory Fresnel Collector
Solar heat for industrial processes (SHIP) is becoming one of the most attractive solutions for industry decarbonisation. Solar plants require a complex control system to manage the fluctuation of their source, solar radiation.
Magdalena Barnetche +5 more
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Sheaf-Theoretic Stratification Learning from Geometric and Topological Perspectives [PDF]
In this paper, we investigate a sheaf-theoretic interpretation of stratification learning from geometric and topological perspectives. Our main result is the construction of stratification learning algorithms framed in terms of a sheaf on a partially ...
Brown, Adam, Wang, Bei
core +3 more sources
Family of the Sun-and-Stars Time-Determining Instruments (Ilseong-jeongsi-ui) Invented During the Joseon Dynasty [PDF]
We analyze the design and specifications of the Sun-and-Stars Time-Determining group of instruments (Ilseong-jeongsi-ui, 日星定時儀) made during the Joseon dynasty.
Yong Sam Lee +2 more
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A Study of the Yang-gyeong-gyu-il-ui (兩景揆日儀) in the Joseon Dynasty [PDF]
The Yang-gyeong-gyu-il-ui (兩景揆日儀) is a kind of elevation sundial using three wooden plates. Sang-hyeok Lee (李尙爀, 1810~?) and Byeong-cheol Nam (南秉哲, 1817~1863) gave descriptions of this sundial and explained how to use it in their Gyu-il-go (揆日考) and Ui-
Yong Sam Lee +2 more
doaj +1 more source
Alessandra Pagliano. Le ore del sole. Geometria e astronomia negli antichi orologi solari romani
The book by Alessandra Pagliano grew out of research for the exhibition “Le ore del Sole” which took place from September 21st 2018 to January 31st 2019 at the Archaeological Museum of Naples (MANN), where twelve Greek-Roman sundial clocks were ...
Cristina Candito
doaj +1 more source
Die unvollendete Sonnenuhr von der Agora der Italiker auf Delos [PDF]
Only one case of an unfinished ancient sundial can be found in the scientific literature. Found on the Greek island of Delos, it was first reported in 1938, although the sundial was then later considered lost.
Fritsch, Bernhard +2 more
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Sundial Horizontal dalam Penentuan Penanggalan Jawa Pranata Mangsa
Sundial sebagai instrumen astronomi bersejarah yang dapat digunakan dalam menyelesaikan masalah-masalah dasar astronomi. Penanggalan Jawa Pranata Mangsa yang penentuannya berdasarkan posisi Matahari menjadi hal yang dapat diperhitungkan.
Muhammad Himmatur Riza
doaj +1 more source
The latest corpus of the inscriptions from Smyrna was published by Georg Petzl in Die Inschriften von Smyrna, Teil II,2: Addenda, Corrigenda und Indices, in series of Inschriften griechische Städte aus Kleinasien, volume 24,2, Bonn: Dr. Rudolf Habelt, in
Akın ERSOY, Ş. Recai TEKOĞLU
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