Results 181 to 190 of about 93,000 (240)

Estimating Causal Effects With Observational Data: Guidelines for Agricultural and Applied Economists

Journal of Agricultural Economics, EarlyView.
ABSTRACT Most research questions in agricultural and applied economics are causal in nature: they study how changes in one or more variables (such as policies, prices or weather) affect one or more other variables (e.g., income, crop yields or pollution).
Arne Henningsen, Guy Low, David Wuepper, Tobias Dalhaus, Hugo Storm, Dagim Belay, Stefan Hirsch   +6 more
wiley   +1 more source

AWJ Cutting Process Quality Modeling and Optimization Based on Footprint Angle. [PDF]

Materials (Basel)
Perec A, Kawecka E, Zajac W.
europepmc   +1 more source

Individualised niches in a variable environment—Consequences for environmental change responses

Methods in Ecology and Evolution, EarlyView.
Abstract Intraspecific trait variation (ITV) can be important for population performance in a variable and changing environment because individuals with different traits have different fitness responses. Furthermore, there are three mechanisms via which individuals can interact with their environment to potentially improve fitness: niche conformance ...
Anastasiia Enne, Vishnu Venugopal, Peter Nabutanyi, Meike J. Wittmann   +3 more
wiley   +1 more source

Tempeh, a fermented soybean, extends lifespan via MAPK pathway and improves healthy aging in <i>Caenorhabditis</i> <i>elegans</i>. [PDF]

Curr Res Food Sci
Cho J, Cho CH, Joo YH, Wei CI, Lee SH.
europepmc   +1 more source

Global field trials show the advantages of beta regression compared with logit transformation and quasi‐likelihood for the analysis of percentage plant disease severity

Annals of Applied Biology, EarlyView.
Disease severity in crop protection field trials is commonly assessed as a proportion represented as a percentage. Traditional statistical analysis uses transformation to logit or angle. This study compares analyses based on the beta distribution and the quasi‐likelihood method with the logit transform using a large global data set of field trials ...
Boby Mathew, Peter D. Lancashire, Marc J. M. Rutten   +2 more
wiley   +1 more source

Revocable and Traceable Decentralized ABE for P2P Networks. [PDF]

Entropy (Basel)
Gao D, Xu H, Qian S.
europepmc   +1 more source

Harvesting benefits: Exploring the effects of second‐best policies on enhancing soil organic carbon stocks in agriculture

American Journal of Agricultural Economics, EarlyView.
Abstract Agricultural subsidies can be an effective policy tool to enhance soil organic carbon sequestration. This paper assesses the effectiveness of a second‐best hypothetical policy which subsidizes additional canola hectares optimally for each soil zone in Saskatchewan in an effort to increase soil organic carbon.
Devin A. Serfas
wiley   +1 more source

Changes in emission regime for nitrogen and sulfur in Germany and its impact on a spruce forest measured over a period of 35 years. [PDF]

J Environ Qual
Göttlein A, Weis W, Raspe S.
europepmc   +1 more source

Fecal Steroids as Tracers of Human Population and Waste Management Practices at the Ancient Maya City of Ucanal, Guatemala

Archaeometry, EarlyView.
ABSTRACT Geochemical data compiled from dried sediments from three water reservoirs at the ancient Maya city of Ucanal, Petén, Guatemala, reveal low to undetectable fecal biomarker concentrations. These low concentrations may be the result of the aerobic decay of sterols combined with well‐managed waste disposal practices.
Jean D. Tremblay, Peter M. J. Douglas, Christina T. Halperin, Yves Gélinas   +3 more
wiley   +1 more source

4D trajectory prediction and conflict detection in terminal areas based on an improved convolutional network. [PDF]

PLoS One
Ma X, Zheng L, Lu X.
europepmc   +1 more source