Results 71 to 80 of about 96,795 (287)

Do outgrower schemes enhance technology adoption and productivity? Evidence from maize farmers in Northern Ghana

Agribusiness, EarlyView.
Abstract Nucleus outgrower schemes are contractual arrangements where well‐resourced large‐scale farmers (nucleus farmers) are empowered by development support agencies to take charge of smallholder farmers, by providing them with market access and the necessary training on agronomic practices and farm inputs for production.
Dominic Tasila Konja, Awudu Abdulai
wiley   +1 more source

Genomic prediction in a backcross population using relationship matrices [PDF]

Archives Animal Breeding
Backcrossing is a widely used crossbreeding strategy for transferring desirable traits from a donor line into a recurrent parent population. Although genomic selection can accelerate genetic improvement in these populations, traditional models such as G ...
A. A. Musa, A. A. Musa, J. Klosa, M. Mayer, N. Reinsch   +4 more
doaj   +1 more source

Assessing Accuracy of Genomic Predictions for Resistance to Infectious Hematopoietic Necrosis Virus With Progeny Testing of Selection Candidates in a Commercial Rainbow Trout Breeding Population

Frontiers in Veterinary Science, 2020
Infectious hematopoietic necrosis (IHN) is an economically important disease of salmonid fish caused by the IHN virus (IHNV). Under industrial aquaculture settings, IHNV can cause substantial mortality and losses. Actually, there is no confirmed and cost-
Roger L. Vallejo, Breno O. Fragomeni, Hao Cheng, Guangtu Gao, Roseanna L. Long, Kristy L. Shewbridge, John R. MacMillan, Richard Towner, Yniv Palti   +8 more
doaj   +1 more source

An Introduction to Recursive Partitioning: Rationale, Application and Characteristics of Classification and Regression Trees, Bagging and Random Forests [PDF]

, 2009
Recursive partitioning methods have become popular and widely used tools for nonparametric regression and classification in many scientific fields. Especially random forests, that can deal with large numbers of predictor variables even in the presence of
Malley, James, Strobl, Carolin, Tutz, Gerhard   +2 more
core   +1 more source

Analyzing individual rent price ratios in eastern German agricultural land markets: A GAMLSS approach

Agribusiness, EarlyView.
Abstract This study explores the rent price ratio in agricultural land markets, crucial for evaluating market efficiency, policy needs, and farmer decision‐making. Traditionally, the analyses faced challenges due to the absence of concurrent sale and rent data for the same land, potentially leading to biased results.
Marius Michels, Cord‐Friedrich von Hobe, Miryam Sarah Merk, Thomas Kneib, Oliver Musshoff   +4 more
wiley   +1 more source

Improving Value-at-Risk prediction under model uncertainty

, 2020
Several well-established benchmark predictors exist for Value-at-Risk (VaR), a major instrument for financial risk management. Hybrid methods combining AR-GARCH filtering with skewed-$t$ residuals and the extreme value theory-based approach are ...
Peng, Shige, Yang, Shuzhen, Yao, Jianfeng   +2 more
core   +1 more source

The Role of Certifications in Improving Household Food Security Among Peruvian Farmers

Agribusiness, EarlyView.
ABSTRACT Achieving global food security requires sustainable transformations in agri‐food systems. Voluntary Sustainability Standards (VSS) such as Organic and Fairtrade aim to internalize certain social and environmental costs while promoting more equitable value distribution, improved market access, and sustainable production practices.
Lisa‐Marie Schulte, Awudu Abdulai
wiley   +1 more source

Factors affecting genomic selection revealed by empirical evidence in maize

Crop Journal, 2018
Genomic selection (GS) as a promising molecular breeding strategy has been widely implemented and evaluated for plant breeding, because it has remarkable superiority in enhancing genetic gain, reducing breeding time and expenditure, and accelerating the ...
Xiaogang Liu, Hongwu Wang, Hui Wang, Zifeng Guo, Xiaojie Xu, Jiacheng Liu, Shanhong Wang, Wen-Xue Li, Cheng Zou, Boddupalli M. Prasanna, Michael S. Olsen, Changling Huang, Yunbi Xu   +12 more
doaj   +1 more source

Forecasting substantial data revisions in the presence of model uncertainty [PDF]

, 2008
A recent revision to the preliminary measurement of GDP(E) growth for 2003Q2 caused considerable press attention, provoked a public enquiry and prompted a number of reforms to UK statistical reporting procedures.
Akritidis, Akritidis, Anthony Garratt, Aruoba, Bai, Castle, Charmokly, Croushore, Croushore, Diebold, Egginton, Faust, Fernandez, Garratt, Garratt, Gary Koop, George, Granger, HM Treasury, Jenkinson, Koop, Lawson, Mankiw, McConnell, Mills, National Statistics, Office for National Statistics, Office for National Statistics, Osborn, Patterson, Pesaran, Richardson, Robinson, Schwarz, Shaun P. Vahey, Statistics Commission, Statistics Commission, Stock, Swanson, Symons, Wroe   +40 more
core   +2 more sources

Sampling Strategy: An Overlooked Factor Affecting Artificial Intelligence Prediction Accuracy of Peptides’ Physicochemical Properties

Advanced Intelligent Discovery, EarlyView.
This study reveals that sampling strategy (i.e., sampling size and approach) is a foundational prerequisite for building accurate and generalizable AI models in peptide discovery. Reaching a threshold of 7.5% of the total tetrapeptide sequence space was essential to ensure reliable predictions.
Meiru Yan, Ankeer Abuduhebaier, Haojin Zhou, Jiaqi Wang   +3 more
wiley   +1 more source