Results 131 to 140 of about 319,235 (305)

A Test Strategy for Spurious Spatial Regression, Spatial Nonstationarity, and Spatial Cointegration [PDF]

A test strategy consisting of a twofold application of a Lagrange Multiplier test is suggested as a device to reveal spatial nonstationarity and spurious spatial regeression. It is further illustrated how the test strategy can be used as a diagnostic for
Reinhold Kosfeld, Jorgen Lauridsen
core  

Clustering Algorithm Reveals Dopamine‐Motor Mismatch in Cognitively Preserved Parkinson's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore the relationship between dopaminergic denervation and motor impairment in two de novo Parkinson's disease (PD) cohorts. Methods n = 249 PD patients from Parkinson's Progression Markers Initiative (PPMI) and n = 84 from an external clinical cohort.
Rachele Malito, Chiara Meneghini, Alice Galli, Luca Gallo, Pierfrancesco Mitrotti, Paola Dimartino, Marianna Inglese, Cinzia Zatti, Alessandro Lupini, Andrea Pilotto, Alessandro Padovani, Micol Avenali, Enza Maria Valente, Cristina Tassorelli, Silvia P. Caminiti   +14 more
wiley   +1 more source

New perspectives under heterogeneity: mechanism of nutrient heterogeneity on Cd-induced hormesis of soil respiration

Frontiers in Microbiology
Hormesis is a phenomenon in which low doses of toxins stimulate organisms, while high doses have inhibitory effects. Soil heterogeneity nutrient spatial profoundly influences community structure and stress responses by altering the microenvironment ...
Qian Gao, Jiangshan Yang, Junyang Wu, Yongli Zhu, Yongli Zhu, Diwu Fan, Jiangang Han, Jiangang Han   +7 more
doaj   +1 more source

Lacunarity for Spatial Heterogeneity Measurement in GIS

Annals of GIS, 2000
Abstract As a scale dependent measure of heterogeneity, lacunarity has been applied to the analysis of structures in both fractals and non-fractals. In this paper, the lacunarity concept and some lacunarity estimation methods are briefly described, then a Lacunarity Analysis extension for ArcView GIS (ESRI) is introduced.
openaire   +1 more source

Brainstem and Cerebellar Volume Loss and Associated Clinical Features in Progressive Supranuclear Palsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Progressive Supranuclear Palsy (PSP) is a neurodegenerative ‘tauopathy’ with predominating pathology in the basal ganglia and midbrain. Caudal tau spread frequently implicates the cerebellum; however, the pattern of atrophy remains equivocal.
Chloe Spiegel, Timothy P. Siejka, Cassandra Marotta, Josh J. Y. Lee, Kelly Bertram, Terence J. O'Brien, Meng Law, Lucy Vivash, Ian H. Harding   +8 more
wiley   +1 more source

Changing determinants of low fertility and diffusion: a spatial analysis for Italy

, 2014
Italy is a case study in lowest-low fertility. Its internal heterogeneity is substantial and changes over time. Historically, the South had higher fertility, but in recent years it the North has become the area with the highest fertility.
Billari, Francesco, Francesco C. Billari, Vitali, Agnese, Agnese Vitali, Billari, Francesco C.   +4 more
core   +1 more source

Diffusion Spectrum Imaging Maps Early Axonal Loss and a Unique Progressive Signal in Neuronal Intranuclear Inclusion Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To delineate specific in vivo white matter pathology in neuronal intranuclear inclusion disease (NIID) using diffusion spectrum imaging (DSI) and define its clinical relevance. Methods DSI was performed on 42 NIID patients and 38 matched controls.
Kaiyan Jiang, Yixiu Pei, Xiaobao Hu, Ying Xiong, Fang Wang, Yanyan Yu, Min Zhu, Dandan Tan, Meihong Zhou, Daojun Hong, Fuqing Zhou   +10 more
wiley   +1 more source

Resolving spatial response heterogeneity in glioblastoma

European Journal of Nuclear Medicine and Molecular Imaging
Abstract Purpose Spatial intratumoral heterogeneity poses a significant challenge for accurate response assessment in glioblastoma. Multimodal imaging coupled with advanced image analysis has the potential to unravel this response heterogeneity.
Julian Ziegenfeuter, Claire Delbridge, Denise Bernhardt, Jens Gempt, Friederike Schmidt-Graf, Dennis Hedderich, Michael Griessmair, Marie Thomas, Hanno S Meyer, Claus Zimmer, Bernhard Meyer, Stephanie E Combs, Igor Yakushev, Marie-Christin Metz, Benedikt Wiestler   +14 more
openaire   +2 more sources

Spatial heterogeneity of soil properties to predict pesticide movement

, 2009
On Conference program titled: 'Determining spatial heterogeneity of soil properties to assess pesticide movement'Agricultural pesticides affect the water quality of surface water runoff and need to be carefully managed.
Oliver, D., Hutson, J., Umali, B., Chittleborough, D., Ostendorf, B., Kookana, R.   +5 more
core  

Impact of Asymptomatic Intracranial Hemorrhage on Outcome After Endovascular Stroke Treatment

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Endovascular treatment (EVT) achieves high rates of recanalization in acute large‐vessel occlusion (LVO) stroke, but functional recovery remains heterogeneous. While symptomatic intracranial hemorrhage (sICH) has been well studied, the prognostic impact of asymptomatic intracranial hemorrhage (aICH) after EVT is less certain ...
Shihai Yang, Chengsong Yue, Zhuang Li, Xiaolei Shi, Haoxuan Zhu, Jie Yang, Linyu Li, Jiaxing Song, Shitao Fan, Gaoming Li, Wenzhe Sun, Zhixian Ye, Jiacheng Huang, Dahong Yang, Jinfu Ma, Xu Xu, Zhixi Wang, Lilan Wang, Guojian Liu, Fengli Li, Changwei Guo, Li Qi, Wenjie Zi   +22 more
wiley   +1 more source