Results 291 to 300 of about 413,266 (394)

Probability prediction of true‐triaxial compressive strength of intact rocks based on the improved PSO‐RVM model

Deep Underground Science and Engineering, EarlyView.
In this work, we propose an improved particle swarm optimization (PSO) algorithm and develop an improved PSO‐relevance vector machine (RVM) model as a substitute for traditional true‐triaxial testing. The model's high prediction accuracy was validated through comparisons with two other machine learning methods and five three‐dimensional Hoek–Brown type
Qi Zhang, Maohui Wang, Ning Wang, Yixin Shen, Xuzhen He   +4 more
wiley   +1 more source

Comparison of Morphometric Measurements of Metacarpus in Different Sheep (Ovis aries L.) Breeds Using the Three-Dimensional Scanner and Digital Caliper. [PDF]

Vet Med Sci
Aydoğdu S, Koçyiğit A, Rabia Kök R, Arslan MS, Demircioğlu İ, Dayan MO.   +5 more
europepmc   +1 more source

Study on the failure mechanism of the shield excavation face in the sandy cobble stratum under different buried depths

Deep Underground Science and Engineering, EarlyView.
Abstract One of the significant challenges faced in shield tunnel construction is the risk of collapse resulting from abrupt changes in soil conditions in advance of the working face, particularly within the sandy cobble stratum. This study aims to effectively manage these sudden variations and to further investigate the failure mechanisms associated ...
Hua Jiang, Chongyang Liu, Ao Zhang, Xiaoyan Zhang, Yuhang Li   +4 more
wiley   +1 more source

Numerical investigation of the effects of excavation on piled embankments under static loading conditions. [PDF]

Sci Rep
Soomro MA, Xu T, Romanov S, Gulvanskii V, Kaplun D, Bukhari MH.   +5 more
europepmc   +1 more source

Excavate

, 2011
openaire   +1 more source

A Physical-Informed and Data-Driven Intelligent Decision-Making Model for Drill-and-Blast Tunnel Excavation

Hongwei Huang, Jianhong Man, Jiayao Chen, Lu An, Shengtao Ma   +4 more
openalex   +1 more source

Itinerant curriculum theory. A declaration of epistemological independence By João M. Paraskeva, London: Bloomsbury. 2024. 284 pp. ISBN 978‐1350292987

The Curriculum Journal, EarlyView.
Ana María Ramos Noble
wiley   +1 more source

Optimization of cut‐hole layout under high in situ stress based on numerical simulation and field tests

Deep Underground Science and Engineering, EarlyView.
This study investigates the blast‐induced rock damage patterns under different cut‐hole layouts and ground stress conditions through numerical simulations and field tests. The findings in this study provide valuable insights for similar underground engineering applications.
Junjie Zhao, Diyuan Li, P. G. Ranjith, Xinxin Lü, Yanliang Li, Xiaoli Su   +5 more
wiley   +1 more source

Early hominins from Morocco basal to the Homo sapiens lineage. [PDF]

Nature
Hublin JJ, Lefèvre D, Perini S, Muttoni G, Skinner MM, Bailey SE, Freidline S, Gunz P, Rué M, El Graoui M, Geraads D, Daujeard C, Davies TW, Kupczik K, Imbrasas MD, Ortiz A, Falguères C, Shao Q, Bahain JJ, Queffelec A, Gómez-Olivencia A, Benazzi S, Le Cabec A, Sorrentino R, Bergmann I, Sbihi-Alaoui FZ, Gallotti R, Raynal JP, Mohib A.   +28 more
europepmc   +1 more source

Data‐driven analysis of the spatial dependence of grouting efficiency during tunnel excavation

Deep Underground Science and Engineering, EarlyView.
Prediction of grouting efficiency using machine learning is enhanced by adopting a training strategy that accounts for the grouting process across multiple rounds. Abstract Grouting with water–cement mixtures is the most widely used and cost‐effective method for managing excess water inflow during tunnel construction.
Huaxin Liu, Xunchang Fei, Wei Wu
wiley   +1 more source