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Mapping Urban Spatial Structure Based on POI (Point of Interest) Data: A Case Study of the Central City of Lanzhou, China

open access: yesISPRS International Journal of Geo-Information, 2020
The study of urban spatial structure is currently one of the most popular research fields in urban geography. This study uses Lanzhou, one of the major cities in Northwest China, as a case area.
Chenyu Lu   +6 more
doaj   +2 more sources

Uncovering the spatial structure of mobility networks [PDF]

open access: yesNature Communications, 2015
The extraction of a clear and simple footprint of the structure of large, weighted and directed networks is a general problem that has many applications.
Barthelemy, Marc   +7 more
core   +9 more sources

Changes in the Spatial Structure of Synchronization Connections in EEG During Nocturnal Sleep Apnea [PDF]

open access: yesClocks & Sleep
This study involved 72 volunteers divided into two groups according to the apnea–hypopnea index (AHI): AHI>15 episodes per hour (ep/h) (main group, n=39, including 28 men, median AHI 44.15, median age 47), 0≤AHI≤15ep/h (control group, n=33, including 12 ...
Maxim Zhuravlev   +8 more
doaj   +2 more sources

Vision Transformers provably learn spatial structure [PDF]

open access: yesNeural Information Processing Systems, 2022
Vision Transformers (ViTs) have achieved comparable or superior performance than Convolutional Neural Networks (CNNs) in computer vision. This empirical breakthrough is even more remarkable since, in contrast to CNNs, ViTs do not embed any visual ...
Samy Jelassi   +2 more
semanticscholar   +1 more source

Meta-Analysis of Scientific Studies About Port-Hinterland Relations [PDF]

open access: yesجغرافیا و آمایش شهری منطقه‌ای, 2023
Regional transportation, especially between port-hinterland, plays an important role in the economic prosperity of the country and the efficiency of the supply chain of commudities.
Melika Zarei   +2 more
doaj   +1 more source

Exp-function Method and Reduction Transformations for Rogue ‎Wave Solutions of the Davey-Stewartson Equations‎ [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2021
A pair of rogue wave solutions of the Davey-Stewartson (DS) equations are obtained by using the exp-function method and reduction transformations. Firstly, the Davey-Stewartson equations are transformed into two easy-to-solve equations, one of which is ...
Sheng Zhang, Yue Zhang, Bo Xu
doaj   +1 more source

Evaluation of Polycentric Spatial Structure in the Urban Agglomeration of the Pearl River Delta (PRD) Based on Multi-Source Big Data Fusion

open access: yesRemote Sensing, 2021
The rapid development of the urban city has led to great changes in the urban spatial structure. Thus, analyses of polycentric urban spatial structures are important for understanding these kinds of structures.
Xiong He, Yongwang Cao, Chunshan Zhou
semanticscholar   +1 more source

Stability of shallow shells with local changes in strength characteristics

open access: yesStructural Mechanics of Engineering Constructions and Buildings, 2022
The authors deal with the structures of buildings in the form of shallow shells with some damage. The derivation of equations is given taking into account the geometric nonlinearity of the work of a thin-walled structure.
Alexander G. Kolesnikov   +1 more
doaj   +1 more source

MODELING THE DYNAMICS OF FOREST ECOSYSTEMS TAKING INTO ACCOUNT THEIR STRUCTURAL HETEROGENEITY AT DIFFERENT FUNCTIONAL AND SPATIAL LEVELS [PDF]

open access: yesВопросы лесной науки, 2022
In many problems of modern forest ecology, it is necessary to analyze the conjugated dynamics of processes occurring at different spatio-temporal scales of the functioning of plant communities and soils resulted from their interaction under the influence
V. N. Shanin   +9 more
doaj   +1 more source

Evolution and Ecological Implications of Land Development and Conservation Patterns on the Qinghai-Tibet Plateau

open access: yesLand, 2022
The Qinghai-Tibet Plateau serves as an important ecological security shelter in China and across Asia. During the past two decades, the patterns of land development and conservation on the Qinghai-Tibet Plateau have undergone significant changes under ...
Yafei Wang   +3 more
doaj   +1 more source

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