Results 71 to 80 of about 345,147 (195)

Reservoir Characterization Based on Bayesian Amplitude Versus Offset Inversion of Marine Seismic Data

Journal of Marine Science and Engineering
Young’s modulus and Poisson’s ratio are critical parameters for reservoir characterization using marine seismic data. Conventional amplitude versus offset (AVO) inversion methods often assume a constant S-to-P wave velocity ratio to simplify the ...
Jianhua Wang, Xinpeng Pan, Wenbo Sun, Chao Li, Ying Zheng, Xiaolong Zhao   +5 more
doaj   +1 more source

Distributed Fiber Optic Sensing for Fracture Geometry Inversion Using All Time Steps Data

Sensors
As an advanced real-time monitoring technique, optic fiber downhole sensing has been widely applied in monitoring fracture propagation during hydraulic fracturing.
Shaohua You, Geyitian Feng, Xiaojun Qian, Qinzhuo Liao, Zhengting Yan, Shuqi Sun, Xu Liu, Shirish Patil   +7 more
doaj   +1 more source

Methane Concentration Inversion Based on Multi-Feature Fusion and Stacking Integration

Sensors
To address the issue of relatively simple features and methods used in methane concentration inversion, which leads to low overall accuracy, this study proposes a methane concentration inversion method based on multi-feature fusion and Stacking ensemble ...
Yanling Han, Wei Li, Congqin Yi, Ge Song, Yun Zhang   +4 more
doaj   +1 more source

Addressing the inverse care law in Scottish general practice: systematic scoping review

British Journal of General Practice
Background Recent evidence demonstrates persistence of the inverse care law (ICL) in general practice in England. Although the ICL was well-described in Scotland 20 years ago, progress in interventions since then is unclear.
James Bogie, Meike van Dijk, Cara Bezzina, Carey Lunan, David Henderson, Stewart W. Mercer, David N Blane   +6 more
openaire   +2 more sources

Establishment and comparison of prediction models for soil black carbon content in urban areas based on Vis–NIR data and environmental covariates

International Journal of Digital Earth
Rapid urbanization has led to significant accumulation of black carbon (BC) in urban soils, threatening ecological safety and human health. Existing methods for quantifying soil BC remain limited by complexity and poor applicability at large scale.
Xiuwen Zhong, Long Guo, Peng Fu, Zhenfeng Shao, Chaoya Dang, Qingwei Zhuang, Peiqing Jing, Xiaodi Xu, Jinyang Wang, Li Tan, Yingyue Pan   +10 more
doaj   +1 more source

Address inversion in Swahili: Usage patterns, cognitive motivation and cultural factors

Cognitive Linguistics, 2018
Abstract Address inversion occurs in many languages of the world and involves figurative use of kinship terms in the “reversed” meaning. In pragmatically defined contexts, a son can be called ‘daddy’, a daughter ‘mummy’, etc. The article explains general cognitive mechanisms underlying this widespread linguistic behavior, drawing ...
openaire   +1 more source

Physics-Informed Weighting Multi-Scale Deep Learning Inversion for Deep-Seated Fault Feature Identification: A Case Study of Aeromagnetic Data in the Dandong Region

Applied Sciences
Magnetic inversion through three-dimensional (3D) susceptibility reconstruction can effectively identify the deep extension characteristics and structural variations in faults. Therefore, the reliability of inversion results from magnetic anomaly data is
Haihua Ju, Zhong Xia, Jie Yang, Longran Zhou, Bo Dai, Jian Jiao, Duo Wang, Runqi Wang   +7 more
doaj   +1 more source

The inverse association between cancer history and incident cognitive impairment: Addressing attrition bias

Alzheimer's & Dementia
AbstractINTRODUCTIONCancer is inversely associated with cognitive impairment. Whether this is due to statistical handling of attrition (death and censoring) is unknown.METHODSWe quantified associations between cancer history and incident cognitive impairment among Health, Aging, and Body Composition Study participants without baseline cognitive ...
Michelle Shardell, Alan M. Rathbun, Ann Gruber‐Baldini, Alice S. Ryan, Jack Guralnik, Dimitrios Kapogiannis, Eleanor M. Simonsick   +6 more
openaire   +2 more sources

Seismic Inversion Method Based on Logarithmic Three-dimensional Total Variation Sparse Constraint under Mixed-domain Constraints

CT Lilun yu yingyong yanjiu
The sparse impedance inversion method is widely used in oil and gas exploration. However, traditional sparse constraints capture limited three-dimensional spatial sparse information and often neglect the time-frequency characteristics of seismic data. As
Bo HOU, Wenxu PENG, Jia WANG, Wanchun LIU, Fuhao LI   +4 more
doaj   +1 more source

An ATpV Regularization Pre-Stack Three-Parameter Inversion Method Based on Weighted Lp

IEEE Access
Accurate inversion of AVO tri-parameters (Vp, Vs, $\rho $ ) is critical for reservoir characterization and hydrocarbon exploration. Conventional pre-stack inversion methods often have ill-posedness and poor stratigraphic boundary preservation, and ...
Shuang Zhao, Xuanlin Kong, Hongjuan Fan, Yabo Wu, Weixing Guo   +4 more
doaj   +1 more source