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
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Dynamic analysis of the SunDial, the rotatory Fresnel collector
Magdalena Barnetche, Luis F. González-Portillo , Mercedes Ibarra, Rubén Barbero, Antonio Rovira, Rubén Abbas 1 PhD Candidate, Universidad Politécnica de Madrid, José Gutiérrez Abascal 2, 28006, Madrid, Spain, m.barnetche@upm.es 2 Universidad Politécnica ...
Magdalena Barnetche +5 more
semanticscholar +1 more source
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
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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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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
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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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The Harold C. Ernst Collection of Portable Sundials [PDF]
A catalog of sundials from the Harold C. Ernst Collection of Portable Sundials, and a handy reference book on the subject of portable sundials. The sundial is the most ancient scientific instrument to come down to us unchanged.
Mayall, Margaret W., Mayall, R. Newton
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Image of inverted World Tree on the stone slab and vessels of the Bronze Age [PDF]
The article presents the results of the 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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Initial Plant Growth in Sand Mine Spoil Amended with Peat Moss and Fertilizer Under Greenhouse Conditions: Potential Species for Use in Reclamation [PDF]
The Great Lakes Basin exhibits the largest collection of freshwater sand dunes in the world. Sand dunes are ecologically important and support a unique assemblage of flora and fauna. Sand dunes are also economically valuable. However, when sand dunes are
Aschenbach, Todd A. +5 more
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