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Alexey A. Kovalev
Researcher at Samara National Research University
Publications - 185
Citations - 2718
Alexey A. Kovalev is an academic researcher from Samara National Research University. The author has contributed to research in topics: Optical vortex & Angular momentum. The author has an hindex of 25, co-authored 179 publications receiving 1841 citations. Previous affiliations of Alexey A. Kovalev include Russian Academy of Sciences.
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Genomic insights into the formation of human populations in East Asia
Chuan-Chao Wang,Hui-Yuan Yeh,Alexander N. Popov,Hu Qin Zhang,Hirofumi Matsumura,Kendra Sirak,Olivia Cheronet,Alexey A. Kovalev,Nadin Rohland,Alexander M. Kim,Swapan Mallick,Swapan Mallick,Rebecca Bernardos,Dashtseveg Tumen,Jing Zhao,Yi Chang Liu,Jiun Yu Liu,Matthew Mah,Matthew Mah,Ke Wang,Zhao Zhang,Nicole Adamski,Nasreen Broomandkhoshbacht,Kimberly Callan,Francesca Candilio,Kellie Sara Duffett Carlson,Brendan J. Culleton,Laurie Eccles,Suzanne Freilich,Denise Keating,Ann Marie Lawson,Kirsten Mandl,Megan Michel,Jonas Oppenheimer,Kadir T. Özdoğan,Kristin Stewardson,Shao-Qing Wen,Shi Yan,Fatma Zalzala,Richard Chuang,Ching Jung Huang,Hana Looh,Chung Ching Shiung,Yuri G. Nikitin,Andrei V. Tabarev,Alexey A. Tishkin,Song Lin,Zhou Yong Sun,Xiao Ming Wu,Tie-Lin Yang,Xi Hu,Liang Chen,Hua Du,Jamsranjav Bayarsaikhan,Enkhbayar Mijiddorj,Diimaajav Erdenebaatar,Tumur Ochir Iderkhangai,Erdene Myagmar,Hideaki Kanzawa-Kiriyama,Masato Nishino,Ken ichi Shinoda,Olga A. Shubina,Jianxin Guo,Wangwei Cai,Qiongying Deng,Longli Kang,Dawei Li,Dongna Li,Rong Lin,Nini,Rukesh Shrestha,Ling Xiang Wang,Lan-Hai Wei,Guangmao Xie,Hong-Bing Yao,Manfei Zhang,Guanglin He,Xiaomin Yang,Rong Hu,Martine Robbeets,Stephan Schiffels,Douglas J. Kennett,Li Jin,Hui Li,Johannes Krause,Ron Pinhasi,David Reich,David Reich +87 more
TL;DR: In this paper, the authors report genome-wide data from 166 East Asian individuals dating to between 6000 and 1000 BC and 46 present-day groups, showing that hunter-gatherers from Japan, the Amur River Basin, and people of Neolithic and Iron Age Taiwan and the Tibetan Plateau are linked by a deeply splitting lineage that probably reflects a coastal migration during the Late Pleistocene epoch.
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A Dynamic 6,000-Year Genetic History of Eurasia's Eastern Steppe.
Choongwon Jeong,Choongwon Jeong,Ke Wang,Shevan Wilkin,William Timothy Treal Taylor,William Timothy Treal Taylor,Bryan Kristopher Miller,Bryan Kristopher Miller,Jan Bemmann,Raphaela Stahl,Chelsea Chiovelli,Florian Knolle,Sodnom Ulziibayar,Dorjpurev Khatanbaatar,Diimaajav Erdenebaatar,Ulambayar Erdenebat,Ayudai Ochir,Ganbold Ankhsanaa,Chuluunkhuu Vanchigdash,Battuga Ochir,Chuluunbat Munkhbayar,Dashzeveg Tumen,Alexey A. Kovalev,Nikolay N. Kradin,Bilikto A. Bazarov,Denis A. Miyagashev,Prokopiy B. Konovalov,Elena Zhambaltarova,Alicia R. Ventresca Miller,Alicia R. Ventresca Miller,Wolfgang Haak,Stephan Schiffels,Johannes Krause,Johannes Krause,Nicole Boivin,Myagmar Erdene,Jessica Hendy,Jessica Hendy,Christina Warinner,Christina Warinner,Christina Warinner +40 more
TL;DR: A pastoralist expansion into Mongolia ca.
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Asymmetric Bessel modes
TL;DR: A new, three-parameter family of diffraction-free asymmetric elegant Bessel modes (aB-modes) with an integer and fractional orbital angular momentum (OAM) and the asymmetry degree of the nonparaxial aB-mode is shown to depend on a real parameter c≥0.
Journal ArticleDOI
Astigmatic transforms of an optical vortex for measurement of its topological charge.
TL;DR: In this study, transformation of n-degenerate intensity null of an optical vortex with the TC n=100 into n isolated first-order intensity nulls is achieved.
Journal ArticleDOI
Diffraction of a plane, finite-radius wave by a spiral phase plate
Victor V. Kotlyar,Svetlana N. Khonina,Alexey A. Kovalev,Victor A. Soifer,Henna Elfström,Jari Turunen +5 more
TL;DR: Analytical expressions containing a hypergeometric function are derived to describe the Fresnel and Fraunhofer diffraction of a plane wave of circular and ringlike cross section by a spiral phase plate (SPP) of an arbitrary integer order.