Results 221 to 230 of about 410,064 (354)

Robust Data-Driven Inference in the Regression-Discontinuity Design

open access: yes, 2014
Sebastian Calonico   +2 more
semanticscholar   +1 more source

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

open access: yesDeep 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

Long-term effects of a mandatory multistage program: the New Deal for young people in the UK [PDF]

open access: yes
The New Deal For Young People is the major welfare-to-work program in the UK. It is a mandatory multistage policy targeted at the 18-24 year old unemployed. This paper investigates the effectiveness of the program in terms of enhancing the (re)employment
Giacomo De Giorgi
core  

Review of artificial intelligence applications in geothermal energy extraction from hot dry rock

open access: yesDeep Underground Science and Engineering, EarlyView.
This paper systematically summarized the applications of artificial intelligence (AI) in hot dry rock (HDR) geothermal exploitation and discussed the limitations and opportunities. A novel intelligent HDR exploitation system was proposed to promote the development of HDR toward more efficiency, economy, and intelligence.
Kun Ji   +5 more
wiley   +1 more source

When Can We Trust Population Thresholds in Regression Discontinuity Designs? [PDF]

open access: yes
A recent literature has used variation just around deterministic legislative population thresholds to identify the causal effects of institutional changes.
Florian Ade, Ronny Freier
core  

Failure characteristics and the energy criterion of rock with a through‐going joint under true‐triaxial unloading conditions: Insights from the DEM model

open access: yesDeep Underground Science and Engineering, EarlyView.
The rock failure mode is significantly influenced by the contributing factors, such as the joint inclination, the initial confining pressure, and the unloading point. We found six typical rock failure modes after a large number of numerical tests. Abstract Excavation unloading damages rock masses, with preferential failure along geological defects in ...
Fei Liu   +4 more
wiley   +1 more source

MPs for Sale? Estimating Returns to Office in Post-War British Politics [PDF]

open access: yes
While the role of money in policymaking is a central question in political economy research, surprisingly little attention has been given to the rents politicians actually derive from politics.
Eggers, Andy, Hainmueller, Jens
core   +1 more source

General and Symptom‐Specific Illness Duration and Course as Predictors of Symptom Severity in Anorexia Nervosa

open access: yesInternational Journal of Eating Disorders, EarlyView.
ABSTRACT Objective Illness duration has been examined as a predictor of anorexia nervosa (AN) outcomes to mixed results, yet is frequently used to make treatment and prognosis decisions. More specific metrics, such as prior illness course (e.g., continuous vs.
Kira G. Venables   +5 more
wiley   +1 more source

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