Results 21 to 30 of about 17,401 (251)
IEEE Open Journal of the Communications Society, 2021 Communication system’s performance is sensitive to bandwidth, power, cost etc. There have been various solutions to improve the performance, out of them, one of the fundamental solutions over the years is design of optimum modulation schemes.
Praveen Kumar Singya +4 more
doaj +1 more source
Survey and analyzing astronomical concepts as the shape and decorative images in metal works of the Seljuk period [PDF]
نگره, 2012 Astronomy and astronomical instruments during the Islamic era due to various needs and requirements in Muslims life, such as awareness of time, sunrise and sunset for praying and issues of navigation and geographic matters and astrology phenomenon, and ...
Mohammad Afrogh, Daryosh Noroozitalab
doaj
Valuation Studies, 2021 The focus on situated practices in current valuation studies becomes an obstacle when situations are too narrowly defined, when moments of valuation are treated as isolated events and especially when the interconnectedness of moments across situations ...
Désirée Waibel +2 more
doaj +1 more source
L'Espace PolitiqueThe technological evolution of satellite telecommunications systems to achieve high-speed Internet access raises geopolitical issues on several levels. The development of these systems is now largely driven by private players, who are gradually gaining ...
Célestine Rabouam
doaj +1 more source
, 2023 Constellations is a researched book-length lyric essay concerning notions of faith and belief weighed against science and the bodily experience, of layers of meaning, of personal truth. The piece takes the form of "constellations" of text in place of stars. The text appears on 4x6" cards against a black background with speckled white to indicate "space"
Todd, Michael, author +3 more
openaire +2 more sources
Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
FEBS Letters, EarlyView.Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley +1 more source
Geo-spatial Information Science, 2022 With the undergoing and planned implementations of mega constellations of thousands of Low Earth Orbiting (LEO) satellites, space will become even more congested for satellite operations.
Yan Zhang +3 more
doaj +1 more source
The newfound relationship between extrachromosomal DNAs and excised signal circles
FEBS Letters, EarlyView.Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley +1 more source
Quantum Configurations in Nick Payne’s Constellations
Études Britanniques Contemporaines, 2013 In recent years, science has become a popular topic in British drama. Biology and physics are a source of new themes and metaphors, but also stimulate formal experimentation: this paper analyses Nick Payne’s Constellations (2012) as an attempt to derive ...
Liliane Campos
doaj +1 more source
LEO Mega Constellations: Review of Development, Impact, Surveillance, and Governance
Space: Science & Technology, 2022 The rapid development of Low Earth Orbit (LEO) mega constellations has significantly contributed to several aspects of human scientific progress, such as communication, navigation, and remote sensing.
Jingrui Zhang +4 more
doaj +1 more source