Results 61 to 70 of about 4,853,850 (241)

Multi-fidelity wake modelling based on Co-Kriging method

Journal of Physics: Conference Series, 2016
The article presents an approach to combine wake models of multiple levels of fidelity, which is capable of giving accurate predictions with only a small number of high fidelity samples. The G. C. Larsen and k-e-fP based RANS models are adopted as ensemble members of low fidelity and high fidelity models, respectively.
Wang, Y. M., Réthoré, Pierre-Elouan; id_orcid 0000-0002-2300-5440, van der Laan, Paul, Murcia Leon, Juan Pablo, Liu, Y. Q., Li, L.   +5 more
openaire   +2 more sources

From Rare to Recurrent: Intensifying Hot–Dry Extremes Across Romania

International Journal of Climatology, EarlyView.
Romania has undergone a marked shift toward more frequent and spatially extensive compound hot–dry months since the 1990s, with persistent hotspots in the eastern Moldavian Plateau and the lower Danube–Bărăgan–Black Sea lowlands and comparatively buffered conditions at higher elevations.
Viorica Nagavciuc, Monica Ionita
wiley   +1 more source

Balancing Exploration and Exploitation using Kriging Surrogate Models in Electromagnetic Design Optimization

, 2006
The balance between exploration and exploitation is an important issue when attempting to find the global minimum of an objective function. This paper describes how this balance may be carefully controlled when using Kriging surrogate models to ...
Hawe, G.I., Sykulski, J.K.
core   +1 more source

Assessing Annual and Seasonal Precipitation Trends in the Karun River Basin Using Co-Kriging: An Over 60-Year Analysis [PDF]

Water Harvesting Research
The Karun River Basin is an important source of water in Iran, located in a semi-arid region that is under increasing pressure due to changing precipitation patterns.
Amin Khoramian
doaj   +1 more source

Spatiotemporal Evolution of Regional Heavy Rainfall Events in Guangdong, South China: Intensification and Expansion Since the Early 1990s

International Journal of Climatology, EarlyView.
Regional heavy rainfall events (RHREs) in Guangdong, South China, during 1961–2025 are reassessed using an improved strength index that integrates rainfall intensity, spatial extent and duration. Results reveal a post‐1991 shift towards more frequent and spatially extensive strong and extreme events, with June showing the most pronounced ...
Wei Liu, Hailai Duan, Kabir Rasouli, Dong Zhang, Hongyu Wu, Zhuohuang Chen, Ruqing Zhang   +6 more
wiley   +1 more source

Co-Kriging-Guided Interpolation for Mapping Forest Aboveground Biomass by Integrating Global Ecosystem Dynamics Investigation and Sentinel-2 Data

Remote Sensing
Mapping wall-to-wall forest aboveground biomass (AGB) at large scales is critical for understanding global climate change and the carbon cycle. In previous studies, a regression-based method was commonly used to map the spatially continuous distribution ...
Yingchen Wang, Hongtao Wang, Cheng Wang, Shuting Zhang, Rongxi Wang, Shaohui Wang, Jingjing Duan   +6 more
doaj   +1 more source

Mapping litter decomposition by remote-detected indicators

Annals of Geophysics, 2006
Leaf litter decomposition is a key process for the functioning of natural ecosystems. An important limiting factor for this process is detritus availability, which we have estimated by remote sensed indices of canopy green biomass (NDVI).
L. Rossi, G. Zurlini, R. Salvatori, M. L. Costantini, S. Mandrone, G. Mancinelli, N. Zaccarelli, L. Sabetta   +7 more
doaj   +1 more source

Considerations of Accuracy and Uncertainty with Kriging Surrogate Models in Single-Objective Electromagnetic Design Optimization

, 2007
The high computational cost of evaluating objective functions in electromagnetic optimal design problems necessitates the use of cost-effective techniques.
Hawe, G., Sykulski, J.K.
core   +1 more source

Cost-efficient electromagnetic-simulation-driven antenna design using co-Kriging [PDF]

, 2012
A technique for design optimisation of antennas is presented. The approach exploits coarse-discretisation electromagnetic (EM) simulations of the antenna of interest that are used to create its fast initial model (a surrogate) through Kriging. During the
Koziel, S, Dhaene, Tom, Ogurtsov, S, Couckuyt, Ivo   +3 more
core   +1 more source

Association Between Long‐Term Exposure to Air Pollution and Parkinson's Disease: Administrative Cohort of Older Adults in South Korea

Movement Disorders, EarlyView.
Abstract Background Evidence regarding the association between long‐term exposure to ambient air pollution and Parkinson's disease (PD) remains inconsistent, particularly among older adults in Asian populations. Objective We aimed to examine the association between long‐term exposure to ambient air pollutants and incident PD in a nationwide ...
Jongmin Oh, Jisun Myung, Dong‐Wook Lee, Changwoo Han, Yun‐Chul Hong, Soontae Kim, Yoon‐Hee Kang, Hyun‐Joo Bae, Youn‐Hee Lim   +8 more
wiley   +1 more source