Results 91 to 100 of about 261,421 (244)

Farmers' preferences for eco-friendly nets as an alternative to insecticides in Africa [PDF]

open access: yes, 2014
Vegetable production in Africa is highly dependent on pesticides with a large proportion of the population involved in farming. We investigate if eco-friendly nets (EFNs) are a viable and accepted alternative to farmer's current practice of extreme use ...
Adegbidi, Anselme   +8 more
core  

Forecasting the Invasion of Eurasian Watermilfoil (Myriophyllum spicatum) at the Northern Edge of Its North American Range

open access: yesFreshwater Biology, Volume 71, Issue 5, May 2026.
ABSTRACT Eurasian watermilfoil (Myriophyllum spicatum) is an invasive aquatic plant posing increasing ecological and management challenges in North America. In Quebec, Canada, the species is rapidly expanding northward into uncolonised catchments. Thus, accurate forecasting of invasion risk is essential to guide proactive monitoring and intervention ...
Lars Lønsmann Iversen   +7 more
wiley   +1 more source

Excursion theory for Markov processes indexed by Lévy trees

open access: yesProceedings of the London Mathematical Society, Volume 132, Issue 5, May 2026.
Abstract We develop an excursion theory that describes the evolution of a Markov process indexed by a Lévy tree away from a regular and instantaneous point x$x$ of the state space. The theory builds upon a notion of local time at x$x$ that was recently introduced in the companion paper [Probab. Theory Related Fields. 189 (2024), 1–99].
Armand Riera, Alejandro Rosales‐Ortiz
wiley   +1 more source

Fertility in the Democratic Republic of Congo [PDF]

open access: yes
In this paper we examine and discuss estimates of fertility in the Democratic Republic of the Congo (DRC). Currently, the United Nations estimates that the country's total fertility rate is 6.7, and national sources provide an even higher estimate of 7.3.
Shapiro, David, Tambashe, B. Oleko
core  

Text mining methods: an answer to Chartier and Meunier [PDF]

open access: yes, 2001
Almost 20 years ago, in a paper introducing the text mining (TM) technique to my fellow statisticians, I expressed the fear that: “it would be unfortunate that this technique, because it is apparently so easy to use, would be abused by incompetent ...
Lahlou, Saadi
core  

Latent Gaussian modeling and INLA: A review with focus on space-time applications [PDF]

open access: yes, 2016
Bayesian hierarchical models with latent Gaussian layers have proven very flexible in capturing complex stochastic behavior and hierarchical structures in high-dimensional spatial and spatio-temporal data.
Opitz, Thomas
core   +2 more sources

Regularized Maximum Likelihood Estimation and Feature Selection in Mixtures-of-Experts Models [PDF]

open access: yes, 2018
Mixture of Experts (MoE) are successful models for modeling heterogeneous data in many statistical learning problems including regression, clustering and classification.
Chamroukhi, Faicel, Huynh, Bao-Tuyen
core   +1 more source

Reforming incentive schemes under political constraints: The physician agency [PDF]

open access: yes
In many developed countries attempts to reform physicians payment schemes have failed. To analyze some of the difficulties, this paper studies reforms of payment schemes in situations such as the physician agency, where the quality of the good produced ...
Gabrielle Demange, Pierre Yves Geoffard
core  

Tree-based conditional copula estimation

open access: yesDependence Modeling
This article proposes a regression tree procedure to estimate conditional copulas. The associated algorithm determines classes of observations based on covariate values and fits a simple parametric copula model on each class.
Bonacina Francesco   +2 more
doaj   +1 more source

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