Results 31 to 40 of about 4,674,553 (309)

Winter Wheat Green-up Date Variation and its Diverse Response on the Hydrothermal Conditions over the North China Plain, Using MODIS Time-Series Data

Remote Sensing, 2019
Vegetation phenology plays a critical role in the dynamic response of terrestrial ecosystems to climate change. However, the relationship between the phenology of winter wheat and hydrothermal factors is inadequate, especially in typical agricultural ...
Linghui Guo, Jiangbo Gao, Chengyuan Hao, Linlin Zhang, Shaohong Wu, Xiangming Xiao   +5 more
doaj   +1 more source

Changes and net ecosystem productivity of terrestrial ecosystems and their influencing factors in China from 2000 to 2019

Frontiers in Plant Science, 2023
Changes in net ecosystem productivity (NEP) in terrestrial ecosystems in response to climate warming and land cover changes have been of great concern. In this study, we applied the normalized difference vegetation index (NDVI), average temperature, and ...
Yutao Huang, Fang Wang, Lijuan Zhang, Junfang Zhao, Hong Zheng, Fan Zhang, Nan Wang, Jiakai Gu, Yufeng Zhao, Wenshuai Zhang   +9 more
doaj   +1 more source

Spatial models for context-aware indoor navigation systems: A survey [PDF]

, 2012
This paper surveys indoor spatial models developed for research fields ranging from mobile robot mapping, to indoor location-based services (LBS), and most recently to context-aware navigation services applied to indoor environments.
Christophe Claramunt, Imad Afyouni, Christophe, Claramunt, RAY, Cyril, Cyril Ray, AFYOUNI, Imad, CLARAMUNT, Christophe   +6 more
core   +1 more source

Monitoring wetland plant diversity from space: Progress and perspective

International Journal of Applied Earth Observations and Geoinformation
Wetlands are the one of ecosystems with the highest biodiversity, ecological service functions and carbon storage. Affected by the synergistic impacts of human activities and climate change, the global wetland area has decreased by 35 % since 1970, with ...
Weiwei Sun, Daosheng Chen, Zhouyuan Li, Saiqiang Li, Siying Cheng, Xiaomeng Niu, Yimeng Cai, Zhenghua Shi, Chaoyang Wu, Gang Yang, Xiaodong Yang   +10 more
doaj   +1 more source

Spatial pattern of ASG-EUPOS sites

Open Geosciences, 2017
The article presents the spatial pattern analysis of the ASG-EUPOS permanent GNSS stations in Poland. Using different methods and tools (nearest neighbour, Riplay’s K-function, morphology of Thiessen polygons) we proved that the station distribution ...
Calka Beata, Bielecka Elzbieta, Figurski Mariusz   +2 more
doaj   +1 more source

Unsupervised Common Spatial Patterns [PDF]

IEEE Transactions on Neural Systems and Rehabilitation Engineering, 2019
The common spatial pattern (CSP) method is a dimensionality reduction technique widely used in brain-computer interface (BCI) systems. In the two-class CSP problem, training data are linearly projected onto directions maximizing or minimizing the variance ratio between the two classes. The present contribution proves that kurtosis maximization performs
Ruben Martin-Clemente, Javier Olias, Sergio Cruces, Vicente Zarzoso   +3 more
openaire   +4 more sources

Are There Sufficient Landsat Observations for Retrospective and Continuous Monitoring of Land Cover Changes in China?

Remote Sensing, 2019
Unprecedented human-induced land cover changes happened in China after the Reform and Opening-up in 1978, matching with the era of Landsat satellite series.
Yan Zhou, Jinwei Dong, Jiyuan Liu, Graciela Metternicht, Wei Shen, Nanshan You, Guosong Zhao, Xiangming Xiao   +7 more
doaj   +1 more source

Negative patterning in the spatial domain

Behavioural Processes, 2022
In three experiments, animals were required to learn about the presence or absence of a hidden platform in a swimming pool. This was determined with reference to different patterned landmarks. In Experiment 1, the presence of a spotted or a striped cue indicated the position of the platform, while the combination of patterns, a half-spotted and half ...
Courtney, Ambilollu, Tau, Huang, Murray R, Horne   +2 more
openaire   +2 more sources

Forecasting the Dialysis Burden in Japan: Validation‐Based Projections of Prevalence and Incidence Through 2050

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Japan has one of the highest dialysis prevalence rates worldwide and a shrinking, aging population. Whether dialysis burden has entered a sustained post‐peak phase or whether recent declines partly reflect pandemic‐related disruptions remains uncertain.
Hatice Şahin, Berrak Itır Aylı, Nüket Paksoy   +2 more
wiley   +1 more source

The Spatial Pattern of Urban Residential Blight [PDF]

, 1971
This thesis seeks to describe and explain the spatial pattern of urban residential blight. The empirical analysis is limited to one study area; that of the Chicago metropolitan area. The data are U.S.
Mercer, John
core