Results 141 to 150 of about 3,512 (307)
AI &Innovation, EarlyView.ABSTRACT Open‐source artificial intelligence is widely promoted as a democratising pathway to digital sovereignty for African states, offering access to frontier architectures without prohibitive capital investment. This paper investigates whether open‐source AI represents a credible route to autonomy or generates a new form of structural dependency ...
Ololade A. Shonubi
wiley +1 more source
Accounting for animal health in efficiency analysis: An application to Swedish dairy farms
American Journal of Agricultural Economics, EarlyView.Abstract Poor animal health is a central concern in modern livestock production. Despite the necessity to incorporate animal health in efficiency analysis, the theoretical and empirical developments are limited on this subject. This article appropriately characterizes the axiomatic properties of animal health within a production framework.
Frederic Ang +3 more
wiley +1 more source
Numerical study of the mechanical behaviour of rock joints and non-persistent jointed rock masses
, 2014 The mechanical behaviour of a rock mass is significantly controlled by the presence of discontinuities, and understanding the effect of discontinuities is essential in the economical and reliable design of rock structures. This research investigated the effect of roughness and persistency of rock joints on the mechanical behaviour of rock structures ...
openaire +2 more sources
Lost in aggregation? On the importance of local food price data for food poverty estimates
American Journal of Agricultural Economics, EarlyView.Abstract This paper explores within‐country variations in food price dynamics and food poverty estimates by employing local market price data and national consumer price index (CPI) data. Our results show that national CPI data may be useful for approximating national trends but they fail to detect and identify spatial variations in local trends, which
Stephan Dietrich +4 more
wiley +1 more source
Frontiers in Earth ScienceTo explore the internal bearing characteristics and fracture evolution laws of discontinuous jointed rock mass in deep roadways, the −600 m main roadway in Xin ’an Coal Mine was used as the research background.
Chengjun Hu +6 more
doaj +1 more source
Multimorbidity and Associations with Cognition and Alzheimer's Disease Biomarkers
Annals of Neurology, EarlyView.Objective Multimorbidity, the coexistence of 2 or more chronic conditions, has been linked to cognitive aging and Alzheimer's disease (AD) and AD‐related dementias, yet the mechanisms remain unclear. We aimed to examine the associations of multimorbidity with cognition and biomarkers across multiple mechanistic pathways.
Xiaqing Jiang +45 more
wiley +1 more source
The Failure Mechanism Research of Jointed Rock Mass Slope
, 2011 It was difficult to analyze the stability of the rock slope for its complex geological structure. Rock mass was the geological body that subjected to intense deformation and suffered damage, which was composed by rock and jointed rock mass. When the rock
Zhen Qiang Ni, Ji Ming Kong, A. Fayou
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Reinforcing Effect of Rock Bolt in Rock Joint
Soils and Foundations, 1988 Yoshinaka, Ryunoshin +2 more
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Effect of Joint Morphology on Fracture Behavior for Rock Mass: DEM Investigation on a Single Joint
EngThis study proposes a novel discrete element modelling (DEM) framework for investigating the fracture behavior of jointed rock masses, with particular emphasis on rock specimens containing a single pre-existing joint.
Chong Wang +5 more
doaj +1 more source
Modeling of Elastic Modulus of Jointed Rock Mass: Gaussian Process Regression Approach
, 2014 The elastic modulus (Ej) of a jointed rock mass is an important parameter for rock mechanics. This study examines the capability of Gaussian process regression (GPR) for determination of the Ej of jointed rock masses.
Kumar, Manoj +2 more
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