Spin angular momentum at the sharp focus of a cylindrical vector vortex beam by V.V. Kotlyar, S.S. Stafeev, A.M. Telegin

“…Using the Richards-Wolf method, an exact analytical expression for the longitudinal projection of the spin angular momentum (SAM) vector at the focus is obtained. …”
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The Influences of the Model Configuration on the Simulation of Stratospheric Northern-Hemisphere Polar Vortex in the CMIP5 Models by Zelin Cai, Ke Wei, Luyang Xu, Xiaoqing Lan, Wen Chen, Debashis Nath

“…This study assesses the abilities of the Fifth Phase of the Coupled Model Intercomparison Project (CMIP5) and CMIP3 models to simulate the boreal winter stratospheric polar vortex. …”
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A stretched polar vortex increased mid-latitude climate variability during the Last Glacial Maximum by Y. Zhang, H. Renssen, H. Seppä, Z. Li, X. Li

“…<p>The Arctic stratospheric polar vortex (SPV) is a key driver of winter weather and has been found to modify winter climate variability and its predictability in Eurasia and North America on inter-annual and decadal timescales. …”
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Study on the Hydraulic Characteristics of Side Inlet and Outlet with Four Channels in Pumped Storage Power Station by MENG Xi, LIU Haitao, RONG Guiwen, SUN Shuangke, LU Dongsheng, LI Guangning, WANG Xing

“…This paper studies the hydraulic characteristics of the four-channel inlet and outlet layout widely used in pumped storage power stations.The results show that:The backward distance of the middle diversion pier at the inlet contraction end is 0.8~1.1 times of the lateral distance between the two side piers,and the lateral distance between the side piers is 0.4~0.5 times of the width of the contraction end,so the hydraulic indicators of the forward and reverse flowing water at inlet meet the design specifications at the same time.The vortex flow pattern in front of the inlet is mainly related to the Reynolds number (Re).No harmful vortex appears on the upper part of the anti-vortex beam when the Re number is less than 4.5×10⁷,however there will be four types of non-aerated penetrating vortex as the Re number reaches 7.4×10⁷,and six types of the full-penetrating air-entraining vortex as the Re number reaches 1.0×10⁸.The head loss test of the inlet is also affected by the flow viscosity.In order to ensure that the model flow is in the resistance square area,the Reynolds number of the model should be greater than 3×10⁴.The above research results can serve as a reference for the design of similar projects.…”
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Securing black lion tamarin populations: improving habitat-based inputs and risks for population viability analysis to inform management decisions by Francy Forero-Sánchez, Francy Forero-Sánchez, Gabriela Cabral Rezende, Gabriela Cabral Rezende, Cláudio Valladares-Pádua, Cláudio Valladares-Pádua, Fabio Stucchi Vannucchi, Fabio Stucchi Vannucchi, Leandro Jerusalinsky, Leandro Jerusalinsky, Luciana Pacca, Kathy Traylor-Holzer

“…The resulting population viability projections using Vortex simulation software identify core subpopulations with low extinction risk and high gene diversity, as well as smaller subpopulations with low long-term viability, highlighting the need for targeted conservation strategies across the fragmented metapopulation.…”
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Modeling The Fate of Sumatran Elephants in Bukit Tigapuluh Indonesia: Research Needs & Implications for Population Management by Alexander Markus Moßbrucker, Muhammad Ali Imron, Satyawan Pudyatmoko, Peter-Hinrich Pratje, Sumardi Sumardi

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Early Detection of Baby-Rain-Cell Aloft in a Severe Storm and Risk Projection for Urban Flash Flood by Eiichi Nakakita, Hiroto Sato, Ryuta Nishiwaki, Hiroyuki Yamabe, Kosei Yamaguchi

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Understanding Confusion: A Case Study of Training a Machine Model to Predict and Interpret Consensus From Volunteer Labels by Ramanakumar Sankar, Kameswara Mantha, Cooper Nesmith, Lucy Fortson, Shawn Brueshaber, Candice Hansen-Koharcheck, Glenn Orton

“…We use data from Jovian Vortex Hunter, a citizen science project to study vortices in Jupiter’s atmosphere, and find that the latent space from the model helps effectively identify different sources of image-level features that lead to low volunteer consensus. …”
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Influence of Balance Hole Diameter on Leakage Flow of the Balance Chamber in a Centrifugal Pump by Wei Dong, Diyi Chen, Jian Sun, Yan Dong, Zhenbiao Yang, Junle Yan

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Hydrodynamic Numerical Simulation of the Sipaikou Reach of the Yellow River in Ningxia Based on MIKE 3 by LIU Xin, LI Chunguang, LAN Bin, HUANG Chuanji, HE Jinsha

“…The calculation results show that, the elliptical vortex runningcounterclockwise with a long radius of about 128.824 m and a short radius of about 71.939 m wasformed at the contact position of the end of the spur dikes and river intake.After implementationof the “curve cut-off” project,there is a sudden change in the boundary conditions of theriverbed, resulting in very complicated flow motion in the study area. …”
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The Circulation Distribution on the Lifting Line for a Given Extracted Power by Ali Helali, Badreddine Kamoun, David Afungchui, Mohamed Jomaa Safi

“…A code has been developed which incorporates the real pitch of the helicoidal vortex wake. Very promising results have been obtained: the circulation distribution for a given extracted power and the chord lengths distribution law along the blade span.…”
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High-order optical Hall effect at the tight focus of laser radiation by V.V. Kotlyar, S.S. Stafeev, E.S. Kozlova

“…It is shown that when focusing a linearly polarized optical vortex with unit topological charge, four local subwavelength regions are formed in the focal plane, in which directions of the longitudinal projection of the spin angular momentum are opposite in the neighboring regions. …”
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The African Nationalist Idea of Africa by Tlhabane Mokhine Dan Motaung

“…However, these African modernisers failed to grasp the historicity of such enduringly baneful identity politics, and were thereby often themselves cast into the vortex of social contradictions reflective of this history. …”
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Investigation of Complex Characteristics of Waterjet Propulsion Device with Intake Grid by Can Luo, Shuaihao Lei, Chuan Wang, Li Cheng, Chenzhi Xia, Di Zhang, Qiang Guo

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Investigation of Rotating Stall Phenomenon and Optimization in Mixed-Flow Waterjet Propulsion Device by Can Luo, Di Zhang, Congcong Zhang, Shuaihao Lei, Chenzhi Xia, Chuan Wang, Li Cheng

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Intensification of convective heat exchange of walls of heat pipe of 3D-printed micro-sized turbojet engine by A. V. Pobelyansky, D. K. Dmitriev, A. A. Levikhin

“…One of the acceptable ways to cool the walls of a small-sized chamber heat pipe is convective heat exchange of the outer side of the heat pipe due to intense vortex formation in the boundary layer of the flow. …”
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Contradictions of students’ motivation for participation in the activities of voluntary organisations by A. V. Starshinova

“…The quantitative research strategy included such tools as drawing up a portrait of a volunteer based on projective questions, using the method of unfinished sentences, the method of direct ranking of motives. …”
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