Results 51 to 60 of about 48,608 (309)

PPO‐Based Reinforcement Learning for the Semi‐Active Vibration Control of MDOF Platform

AI &Innovation, EarlyView.
ABSTRACT Aiming at the coupled vibration problem of a multi‐degree‐of‐freedom (MDOF) vibration isolation platform under eccentric excitation, this paper proposes a semi‐active vibration control strategy based on Proximal Policy Optimization (PPO) ‐based reinforcement learning (PPO RL).
Wei Huang, Jian Xu
wiley   +1 more source

Numerical analyses of the influences of rock properties and joints on rock fragmentation in shaft sinking by drilling method

Scientific Reports
The mechanical rock-crushing efficiency is directly influenced by rock properties and joint structure. Tipped-hob is widely used in the construction of shafts.
Pingping Xu, Jiuqun Zou, Xin Huang, Jihuan Han   +3 more
doaj   +1 more source

Uncovering renewable energy policy impact channels on land values, the local farm structure, and farmland heterogeneity

American Journal of Agricultural Economics, EarlyView.
Abstract Germany's Renewable Energy Sources Act (REA), enacted in 2000 and subsequently amended, subsidized national renewable energy production with fixed feed‐in tariffs for renewable energy sources (RE) from wind, solar, and biogas. Empirical studies suggest that the policy was creating windfall effects for landowners and attribute farmland use ...
Lars Isenhardt, Stefan Seifert, Saskia Wolff, Tobia Lakes, Marten Graubner, Axel Werwatz, Silke Hüttel   +6 more
wiley   +1 more source

Influences of hydro-mechanical conditions to fracturing behavior of sandstone analogs: approach and implications

Journal of Petroleum Exploration and Production Technology
The compressive torsion (C-T) fractures are widely distributed in water-saturated, clay-poor, and cementation-weak Cretaceous sandstones in Western China due to asymmetric tectonic convergence.
Xiaodong Zhao, Xiao Zhang, Qingwen Zhong, Guoqing Zhou, Jinhong Yang   +4 more
doaj   +1 more source

Long-Term Water Stability of Silty Soil Subgrade Modified by Nano-Superhydrophobic Material in the Lower Yellow River Region

Buildings
Water-induced deterioration of silty soil subgrade in the lower Yellow River floodplain poses a critical, long-standing engineering challenge. Most existing studies on silty soil modification prioritize strength enhancement via traditional cementitious ...
Wenqiang Dou, Shang Gao, Runsheng Pei, Xiaoning Zhang, Chenhao Zhang, Tiancai Cao, Hao Zeng   +6 more
doaj   +1 more source

An innovative method for creating and using nanoparticles for gas extraction from gas hydrates [PDF]

E3S Web of Conferences, 2019
The growth of prices for traditional energy sources prompts Ukraine to seek new approaches to solving energy problems. Today, the country has intensified its work in this direction, in particular, legislative support is being developed and improved, and ...
Bondarenko Volodymyr, Svietkina Olena, Prokopenko Kostiantyn, Liu Baochang   +3 more
doaj   +1 more source

State-of-the-art review of geotechnical-driven artificial intelligence techniques in underground soil-structure interaction

, 2021
There has been an increasing demand for underground construction due to urbanization and limited land in metropolitan cities in the recent years. However, the behavior of underground structures in soils and rocks is often not completely understood.
Oh, E, Ong, DEL, Jong, SC
core   +1 more source

Measuring Child Disadvantage: Comparing Multidimensional and Socioeconomic Approaches for Predicting Developmental Outcomes

Australian Journal of Social Issues, EarlyView.
ABSTRACT Robust measurement of disadvantage is essential to identifying and addressing inequities in children's development. We tested how a multidimensional framework of child disadvantage performed relative to a traditional socioeconomic position (SEP) approach to predict developmental outcomes.
Wei Hong, Fiona Mensah, Elodie O'Connor, Shuaijun Guo, Sharon Goldfeld, Meredith O'Connor, Cindy Pham, Sarah Gray   +7 more
wiley   +1 more source

[View of construction work in progress near The Rocks, construction of the Sydney underground railway] [picture].

, 1916
Title supplied by cataloguer.; Part of the collection: Construction of the Sydney underground railway.; Condition: torn ...

core  

‘Turkeys Cannot Vote for Christmas’: Why Epistemic Disobedience in an Anti‐Black World Matters

Australian Journal of Social Issues, EarlyView.
ABSTRACT Never in the history of global coloniality has the idea of epistemic disobedience been as important as in the 21st century. This is not only because the struggle for decolonisation has shifted from physical confrontation between the coloniser and the colonised into a battle of ideas but also because the former has deployed the idea of ...
Morgan Ndlovu
wiley   +1 more source