Results 51 to 60 of about 10,081 (210)

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

Research on Vehicle Frame Optimization Methods Based on the Combination of Size Optimization and Topology Optimization

World Electric Vehicle Journal
The efficient development of electric vehicles is essential to drive society towards sustainable development. Designing a lightweight frame is a key strategy to improve the economy and environment, increase energy efficiency, and reduce carbon emissions.
Qun He, Xinning Li, Wenjie Mao, Xianhai Yang, Hu Wu   +4 more
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

Ride comfort optimization of a multi-axle heavy motorized wheel dump truck based on virtual and real prototype experiment integrated Kriging model

Advances in Mechanical Engineering, 2015
The optimization of hydro-pneumatic suspension parameters of a multi-axle heavy motorized wheel dump truck is carried out based on virtual and real prototype experiment integrated Kriging model in this article.
Bian Gong, Xuexun Guo, Sanbao Hu, Lin Xu
doaj   +1 more source

Advanced Kriging response surface approach for efficient design optimization

Nihon Kikai Gakkai ronbunshu, 2014
In this research, a Gradient-Vector Product (GVP) enhanced Kriging response surface model approach has been developed in which the GVP is defined by the gradient vector of objective function with respect to design variables as well as an arbitral unit ...
Wataru YAMAZAKI
doaj   +1 more source

Mechanism reliability and sensitivity analysis of landing gear under multiple failure modes

Xibei Gongye Daxue Xuebao, 2021
For a certain type of aircraft landing gear retraction-extension mechanism, a multi-body dynamic simulation model is established, and the time-dependent curves of force and angle are obtained.

doaj   +1 more source

Hybrid Machine Learning–Geostatistical Modeling of Soil Quality in Saline–Sodic Soils Under Arid Agroecosystems of Northwestern Peru

Journal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Background Soil fertility management in mango and banana production systems in northern Peru is limited by marked spatial heterogeneity, driven by chemical imbalances, particularly salinity, alkalinity, and sodicity. Aim This study developed a spatial predictive framework to assess soil quality across the agricultural area of Morropón Province,
Sebastian Casas‐Niño, Gerson La Rosa Lama, Sharon Mejia, Ruth Mercado, Kenyi Quispe   +4 more
wiley   +1 more source

Multiobjective Optimization Design of Spherical Axial Split-Phase Permanent Maglev Flywheel Machine Based on Kriging Model

IEEE Access, 2022
In order to improve the torque and suspension performance and reduce the torque ripple of spherical axial split-phase permanent maglev flywheel machine (S-AP-MF), a multi-objective optimization design method based on kriging model was proposed.
Zhiying Zhu, Yuhui Ni, Linjing Shao, Jinshuai Jiao, Xinya Li, Bingyu Cong   +5 more
doaj   +1 more source

Balancing Productivity, Ecology, and Social Well‐Being: Insights From Three Decades of Farmland Transformation in China

Land Degradation &Development, EarlyView.
ABSTRACT Balancing food security, social equity, and ecological sustainability remains a persistent challenge in global agricultural systems. While economic and ecological aspects of land‐use transitions have been extensively studied, the long‐term dynamics of social functions and their interactions with other functions are less understood.
Zhiyuan Zhu, Yongzhong Feng
wiley   +1 more source

Integrated Prediction and Analysis of Soil Erosion and Soil Organic Carbon Loss in the Dayekou Watershed, Qilian Mountains

Land Degradation &Development, EarlyView.
ABSTRACT Soil erosion poses a critical threat to ecological security in mountain watersheds worldwide. Predicting its dynamics and associated soil organic carbon (SOC) loss remains an ongoing challenge during the 21st century due to complex interactions among climate, land use, and topography.
Yongde Kang, Shizhe Han, Xiaofeng Ren, Erwen Xu   +3 more
wiley   +1 more source