Results 111 to 120 of about 739,093 (247)

Thresholds: The metaphorical foundations of powerful knowledge

The Curriculum Journal, EarlyView.
Abstract This paper advances a theoretical account of threshold concepts as metaphorical‐relational structures that reorganise meaning across contexts. Building on conceptual metaphor theory, we propose that threshold concepts can be understood as sites of schema‐level reorganisation: deep, embodied patterns of relational logic that scaffold abstract ...
Maria Karrol, Elizaveta Lyssova‐Golomzina   +1 more
wiley   +1 more source

Uplift Behavior of Suction Bucket Foundations in Sands: Experimental and Numerical Investigations

Journal of Marine Science and Engineering
Suction bucket foundations offer efficient installation and reusability for offshore wind turbines, yet their uplift behavior in sands with different permeabilities remains insufficiently understood. This study investigates the uplift behavior of suction
Xin Wang, Xueliang Zhao, Weiming Gong, Yangyang Li, Wenni Deng   +4 more
doaj   +1 more source

Exploring wave propagation behaviors in rock: A grain‐based perspective on mineral structures

Deep Underground Science and Engineering, EarlyView.
This study investigates wave propagation in rock at the grain scale using a grain‐based model, revealing that mineral elastic modulus significantly influences wave attenuation while grain size and distribution have limited effects. A novel peak particle velocity attenuation prediction model is proposed and validated for grain‐scale wave propagation ...
Zhiyi Liao, Jiachen Xu, Kai Zhang, Changtai Zhou   +3 more
wiley   +1 more source

Numerical Simulation of Vertical Cyclic Responses of a Bucket in Over-Consolidated Clay

Journal of Marine Science and Engineering
Multi-bucket foundations have become an alternative for large offshore wind turbines, with the expansion of offshore wind energy into deeper waters. The vertical cyclic loading–displacement responses of the individual bucket of the tripod foundation are ...
Jun Jiang, Chengxi Luo, Dong Wang
doaj   +1 more source

Scour identification around offshore wind turbine monopile foundations using an unsupervised anomaly detection approach [PDF]

This paper presents a novel data-driven framework for detecting scour damage around monopile foundations using acceleration data collected from an offshore wind turbine (OWT) tower under healthy conditions.
Malekjafarian, Abdollah, Ghiasi, Ramin, Tott-Buswell, Jacques, Abdelhak, Mahmoud, Prendergast, Luke J.   +4 more
core   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Upper bound limit analysis of coral reef limestone cavern roof stability incorporating a tension‐shear failure mechanism with tensile‐strength cut‐off

Deep Underground Science and Engineering, EarlyView.
For the roof of coral reef limestone caverns, a novel tension‐shear composite failure mechanism was developed. The most critical tensile crack model was identified using a hybrid optimization algorithm, and the stability of the cavern roof was analyzed accordingly.
Dongsheng Xu, Chenxu Li, Chuantan Hou
wiley   +1 more source

Time-dependent reliability analysis of pile foundations considering dredging strategies

Shuili Shuiyun Gongcheng Xuebao
To develop a structural reliability analysis method for the interaction system between silted slopes and high-piled wharves, a two-dimensional diffusion model considering chloride ion erosion effects was derived based on Fick’s second law.
HAN Qingyu, CUI Chunyi, XIONG Qi, ZHAO Min, LIU Hailong, YOU Zaijin, JI Zezhou   +6 more
doaj   +1 more source

Major engineering breakthrough of Well XA‐1, the deepest ten‐thousand‐meter well in a global sedimentary basin

Deep Underground Science and Engineering, EarlyView.
Well XA‐1, completed at a true vertical depth of 11 156 m in the Shawan Sag of the Junggar Basin, is the deepest predominantly near‐vertical well drilled in a sedimentary basin. The figure shows the basin's tectonic framework and well location (a), a structural cross‐section spanning the Shawan Sag and adjacent uplifts (b), and the stratigraphic column
Fangkai Liu, Qingwen Tan, Sen Zhu, Guangyou Zhu   +3 more
wiley   +1 more source

Reusing depleted oil and gas wells for geothermal energy: Feasibility, challenges, and a decision‐making framework for sustainable conversion

Deep Underground Science and Engineering, EarlyView.
The graphical abstract presents a structured decision‐support framework for assessing the feasibility of converting depleted oil and gas wells into geothermal energy systems. The left panel illustrates a comprehensive, multi‐stage decision‐making framework progressing from prefeasibility screening and technical–economic analysis to policy alignment ...
Karolina Bieryt, Yu Pan, Heinz Konietzky, Fei Wang   +3 more
wiley   +1 more source