云南高校图书馆联盟文献共享服务平台- COVERS

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The Homology Growth for Finite Abelian Covers of Smooth Quasi-projective Varieties: 《Chinese Annals of Mathematics,Series B》2025年第1期51-62,共12页Fenglin LI Yongqiang LIU; supported by the National Key Research and Development Project(No.SQ2020YFA070080);the National Natural Science Foundation of China(No.12001511);the Project of Stable Support for Youth Team in Basic Research Field CAS(No.YSBR-001);the Project of Analysis and Geometry on Bundles of the Ministry of Science and Technology of China and the Fundamental Research Funds for the Central Universities。; Let X be a complex smooth quasi-projective variety with a fixed epimorphism ν:π_(1)(X)■H,where H is a finitely generated abelian group with rank H≥1.In this paper,the authors study the asymptotic behaviour of Bett...; 关键词：Mahler measure Jump loci Orbifold map L^(2)-Betti number

Assessing the impact of artificial geotextile covers on glacier mass balance and energy fluxes: 《Advances in Climate Change Research》2024年第6期1147-1159,共13页Yi-Da XIE Fei-Teng WANG Hui ZHANG Wen-Tao DU Wei-Bo ZHAO; supported by the Science and Technology program of Gansu Province(23ZDFA017,22ZD6FA005);the Third Comprehensive Scientific Expedition of Xinjiang Uyghur Autonmous Region(2022xjkk0802);National Natural Science Foundation of China(42301168);Gansu Province Science Foundation for Youths(23JRRA673).; As global warming accelerates,leading to the retreat of glaciers,the effectiveness of artificial coverings,in particular geotextiles,in reducing glacier ablation has emerged as a topic of increasing concern.Neverthele...; 关键词：Artificial coverings Mass and energy balance COSIPY model Qilian Mountains Bailanghe Glacier No.12

Fundamentals and progress of the manifold method based on independent covers: 《Science China(Technological Sciences)》2024年第4期966-991,共26页SU HaiDong LIN ShaoZhong XIE ZhiQiang GONG YaQi QI YongFeng; supported by the Fundamental Research Funds for Central Public Welfare Research Institutes in China(Grant Nos.CKSF2010012/CL,CKSF2013031/CL,CKSF2014054/CL,CKSF2015033/CL,and CKSF2016022/CL)。; Aiming to solve mesh generation,computational stability,accuracy control,and other problems encountered with existing numerical methods,such as the finite element method and the finite volume method,a new numerical co...; 关键词：series solutions mesh generation adaptive analysis fixed meshes numerical manifold method

Teahouses In Chengdu: 《初中生学习指导》2023年第26期50-50,共1页林锋; There is a saying,“China has the best teahouses in the world and Chengdu has the best teahouses in China.”Chengdu has not only many teahouses but also the special ways of serving and drinking tea.As soon as the visi...; 关键词：China. COVERS houses

Restoration of Folk Document Covers from the Qing Dynasty to the Republic of China: 《Paper And Biomaterials》2023年第3期66-74,共9页Jiao Yao Fujiang Geng Huanhuan Wang Yunpei Lu; the research result of the 2022 Hebei Province Social Science Development Research Project:“Research on the Sustainability of Paper Protection of Revolutionary Literature Seen in Taihang Mountain Documents”(Project No.:20220303015).; The covers of booklets and books in folk documents primarily serve to protect the pages.Owing to long-term storage limitations,a considerable number of book covers have suffered varying degrees of damage.Following the...; 关键词：RESTORATION folk documents COVERS

Haken 3-Manifolds in Small Covers: 《Chinese Annals of Mathematics,Series B》2023年第4期549-560,共12页Lisu WU Li YU; supported by the National Natural Science Foundation of China(No.11871266);the Priority Academic Program Development of Jiangsu Higher Education Institutions。; The authors prove that a 3-dimensional small cover M is a Haken manifold if and only if M is aspherical or equivalently the underlying simple polytope is a flag polytope.In addition,they find that M being Haken is als...; 关键词：Small cover Haken manifold Incompressible surface Flag polytope

On G-quotient Mappings and Networks Defined by G-convergence: 《Journal of Mathematical Study》2023年第2期135-146,共12页Fang Liu Xiangeng Zhou Li Liu; supported by Natural Science Foundation of Fujian Province(Grant No.2020J01428);Educational Research Projects of Middle-aged Teachers of Fujian Province(Grant No.JAT200685).; Let G_(1),G_(2) be methods on topological spaces X and Y respectively,f:X→Y be a mapping,P be a cover of X.f is said to be a(G_(1),G_(2))-quotient mapping provided f^(−1)(U)is G_(1)-open in X,then U is G_(2)-open in ...; 关键词：G-methods G-convergence G-quotient mappings G-cs′-networks G-kernel covers G-Fréchet spaces

Album recording Wuhan's painted manhole covers: 《Changjiang Weekly》2023年第2期6-6,共1页Deng Xiaolong; For more than 10 years,Mr.Ma has been taking photos of manhole covers that havepictures on them.He has found over 100 in the streets and alleys of Wuhan and has finally organized many of them into a book.Recently,he p...; 关键词：RECORDING finally COVERS

A Note on Two-Generator 2-Group Covers of Cubic Symmetric Graphs of Order 2p: 《Algebra Colloquium》2022年第4期713-720,共8页Xue Wang Jinxin Zhou; supported by the Fundamental Research Funds for the Central Universities(2020YJS190);the National Natural Science Foundation of China(12071023,11671030)。; Let p be a prime.In this paper,a complete classification of edge-transitive N-covers of a cubic symmetric graph of order 2p is given for the case when N is a twogenerator 2-group whose derived subgroup is either isomo...; 关键词：edge-transitive graph symmetric graph bi-Cayley graph N-cover

Regional Sampling of Forest Canopy Covers Using UAV Visible Stereoscopic Imagery for Assessment of Satellite-Based Products in Northeast China: 《Journal of Remote Sensing》2022年第1期311-324,共14页Tianyu Yu Wenjian Ni Zhiyu Zhang Qinhuo Liu Guoqing Sun; This work was supported by the National Natural Science Foundation of China(grant numbers:42090013 and 42022009);the National Key Research and Development Program of China(grant numbers:2017YFA0603002 and 2020YFE0200800)。; Canopy cover is an important parameter affecting forest succession,carbon fluxes,and wildlife habitats.Several global maps with different spatial resolutions have been produced based on satellite images,but facing the...; 关键词：MAPS NORTHEAST FOREST

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