Results 51 to 60 of about 159,666 (180)

Uma análise da gestão de risco de preço por parte dos produtores de café arábica no Brasil

open access: yesRevista de Economia e Sociologia Rural, 2012
Os mercados futuros possuem uso restrito entre os cafeicultores brasileiros, o que, de certa maneira, não condiz com as altas razões ótimas de hedge obtidas nos modelos de mínima variância.
Rodrigo Lanna Franco da Silveira   +2 more
doaj   +1 more source

Developing epidemiological preparedness for a plant disease invasion: Modelling citrus huánglóngbìng in the European Union

open access: yesPLANTS, PEOPLE, PLANET, Volume 7, Issue 5, Page 1403-1423, September 2025.
Huánglóngbìng (HLB) is a bacterial disease of citrus that has significantly impacted Brazil and the United States, although citrus production in the Mediterranean Basin remains unaffected. By developing a mathematical model of spread in Spain, we tested surveillance and control strategies before any future HLB entry in the EU.
John Ellis   +9 more
wiley   +1 more source

Bibliography of Structuralism III [PDF]

open access: yes, 2013
In two occasions a Bibliography of Structuralism has been published in Erkenntnis (1989, 1994). Since then a lot of water has flowed under the bridge and the structuralist program has shown a continuous development. The aim of the present bibliography is
Abreu, Cláudio   +2 more
core  

Comparación de técnicas de clasificación deductivas para estimar la distribución potencial de insectos cuarentenarios [PDF]

open access: yes, 2019
El objetivo de este trabajo fue comparar el desempeño de los criterios de clasificación nítidos y difusos en la construcción de modelos deductivos de la distribución potencial de insectos exóticos. Considerando criterios de clasificación binaria nítida y
Aceñolaza, Pablo Gilberto   +3 more
core   +1 more source

RETRACTED: The Growing Tide of Antiscience Sentiment: A Global Concern

open access: yesWorld Medical &Health Policy, Volume 17, Issue 3, Page 529-537, September 2025.
ABSTRACT The growing tide of antiscience sentiment represents a critical global challenge, with particularly visible manifestations in the United States. This viewpoint examines how the rejection of scientific consensus threatens academic institutions, public health, and technological progress worldwide.
Thorsten Rudroff
wiley   +1 more source

Un método para asignar estudiantes a asignaturas-grupo

open access: yesIngeniería e Investigación, 1984
La finalidad de este artículo es presentar una versión mejorada, desarrollada por el autor del método Simplex Stopped propuesto por G. L. Thompson. El artículo se inicia con un marco general del proceso de registro y sus alternativas.
Luis Gerardo Astaiza A.
doaj  

Description of interhemispheric disconnection syndrome in a patient with Marchiafava-Bignami disease [PDF]

open access: yes, 2013
Interhemispheric disconnection syndrome (IDS), described by Sperry, Gazzaniga and Bogen, is characterized by the presence of visual and tactile anomia, absence of interhemispheric transference of unilateral somatosensory stimulation of both hands ...
Gómez, Pablo Guillermo   +3 more
core   +1 more source

Advancing the concept of windows of opportunity to explore the dynamics of the sustainability transition: The development of the EV market in the UK

open access: yesEuropean Policy Analysis, Volume 11, Issue 3, Page 333-367, Summer 2025.
Abstract In this study, we seek to understand the interplay between industry and policy, to explain how and why the UK shifted from the promotion of low‐emission road transportation, to policy based on zero tailpipe‐emission electric vehicles (EVs), as part of its evolving net zero ambitions.
Ural Arslangulov, Robert Ackrill
wiley   +1 more source

Análisis de sensibilidad del pronóstico de nubosidad del modelo WRF en la mitad occidental Cuba

open access: yesRevista Cubana de Meteorología, 2016
En el presente trabajo se realiza un estudio de sensibilidad del pronóstico de nubosidad del modelo WRF-ARW-UPP en la mitad occidental de Cuba. Las corridas se realizaron con dos períodos de spin-up del modelo diferentes: 6 horas y 12 horas.
Alejandro Baró Pérez   +1 more
doaj  

Observables in Topological Yang-Mills Theories With Extended Shift Supersymmetry

open access: yes, 2005
We present a complete classification, at the classical level, of the observables of topological Yang-Mills theories with an extended shift supersymmetry of N generators, in any space-time dimension.
Baal   +17 more
core   +1 more source

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