95,193 research outputs found
What Early Modern Maps Are (Not) Telling Us about the History of Egyptology in Europe
Egyptology attempts to find its origins and its earliest arche-
ological discoveries on ancient maps. However, it is a misun-
derstanding of the nature of ancient maps to believe that they
could represent a source for a history of discovery. They depict
the country as it was known and perceived by Greek and Ro-
man people, not the ancient sites discovered or identified by
travelers and scholars. However, ancient maps of Egypt are not
without use for Egyptology as they depict a summary of every-
thing that was known and considered to be important about
Ancient Egypt. Through the study of myths about the Egyp-
tian origin of mapmaking, consideration of the sources at the
disposal of mapmakers, and tracing the evolution of maps of
Egypt from the 15th to the 18th century, what people thought
of Ancient Egypt can be revealed
Introduction to Egypt
Students will use Google Earth and maps to locate Egypt and its various cities and landforms. Students will compute both the population density and physiological density of Egypt using various online sources. Students will research the Aswan Dam and discuss both the pros and cons associated with it
Ancient Egypt 1920 Part 4
Part 4 of the 1920 Ancient Egypt books. Contents include Coptic twists and plaits, the sphinxes of Tanis, Alexandrian world maps, passages of Aleppo Citadel, and Kheker friezes.https://knowledge.e.southern.edu/kweeks_coll/1013/thumbnail.jp
Putting the world in order: mapping in Roman texts
Ancient Perspectives encompasses a vast arc of space and time—Western Asia to North Africa and Europe from the third millennium BCE to the fifth century CE—to explore mapmaking and worldviews in the ancient civilizations of Mesopotamia, Egypt, Greece, and Rome. In each society, maps served as critical economic, political, and personal tools, but there was little consistency in how and why they were made. Much like today, maps in antiquity meant very different things to different people
Predicting Avian Influenza Co-Infection with H5N1 and H9N2 in Northern Egypt.
Human outbreaks with avian influenza have been, so far, constrained by poor viral adaptation to non-avian hosts. This could be overcome via co-infection, whereby two strains share genetic material, allowing new hybrid strains to emerge. Identifying areas where co-infection is most likely can help target spaces for increased surveillance. Ecological niche modeling using remotely-sensed data can be used for this purpose. H5N1 and H9N2 influenza subtypes are endemic in Egyptian poultry. From 2006 to 2015, over 20,000 poultry and wild birds were tested at farms and live bird markets. Using ecological niche modeling we identified environmental, behavioral, and population characteristics of H5N1 and H9N2 niches within Egypt. Niches differed markedly by subtype. The subtype niches were combined to model co-infection potential with known occurrences used for validation. The distance to live bird markets was a strong predictor of co-infection. Using only single-subtype influenza outbreaks and publicly available ecological data, we identified areas of co-infection potential with high accuracy (area under the receiver operating characteristic (ROC) curve (AUC) 0.991)
Macroscale multimodal imaging reveals ancient painting production technology and the vogue in Greco-Roman Egypt.
Macroscale multimodal chemical imaging combining hyperspectral diffuse reflectance (400-2500 nm), luminescence (400-1000 nm), and X-ray fluorescence (XRF, 2 to 25 keV) data, is uniquely equipped for noninvasive characterization of heterogeneous complex systems such as paintings. Here we present the first application of multimodal chemical imaging to analyze the production technology of an 1,800-year-old painting and one of the oldest surviving encaustic ("burned in") paintings in the world. Co-registration of the data cubes from these three hyperspectral imaging modalities enabled the comparison of reflectance, luminescence, and XRF spectra at each pixel in the image for the entire painting. By comparing the molecular and elemental spectral signatures at each pixel, this fusion of the data allowed for a more thorough identification and mapping of the painting's constituent organic and inorganic materials, revealing key information on the selection of raw materials, production sequence and the fashion aesthetics and chemical arts practiced in Egypt in the second century AD
Performance evaluation of synchronous reluctance motors with and without permanent magnets
Nowadays, a growing interest in the efficiency and
the cost of electrical machines has been noticed. Therefore,
Synchronous Reluctance Motors (SynRMs) have become more
attractive, thanks to their higher efficiency and nevertheless
acceptable cost compared to induction machines. The rotor
design of SynRMs with or without permanent magnets (PMs) has
a huge effect on the motor efficiency, torque density and power
factor. This paper introduces an evaluation for the performance
of SynRMs with and without PMs in terms of efficiency, torque
and power factor maps. Three different rotor designs for the
same machine have been compared. For one machine, the
experimental measurements have been obtained and the
validation of the simulation results have been confirme
The decreasing level of Toshka Lakes seen from space
Toshka Lakes are lakes recently formed in the Sahara Desert of Egypt, by the
water of the Nile, conveyed from the Nasser Lake through a canal in the Toshka
Depression. From space, astronauts noticed the growing of a first lake, the
easternmost one, in 1998. Then additional lakes grew in succession due west,
the westernmost one between 2000 and 2001. In fact, sources of precious
information on Toshka Lakes are the pictures takes by the crews of space
missions and the satellite imagery. They show that, from 2006, the lakes
started shrinking. A set of recent images displays that the surface of the
easternmost lake is strongly reduced
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