Results 101 to 110 of about 991,499 (304)

Modelling Seasonality An Extension of the HEGY Approach in the Presence of Two Structural Breaks [PDF]

open access: yes
In this paper the HEGY testing procedure (Hylleberg et al. 1990) of analyzing seasonal unit roots is tried to be re-examined by allowing for seasonal mean shifts with exogenous break points. Using some Monte Carlo experiments the distribution of the HEGY
Ozlem Tasseven
core  

The Biofuels Blueprint: Understanding the U.S. Renewable Fuel Standard

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT We provide a comprehensive review of the U.S. Renewable Fuel Standard (RFS), synthesizing nearly two decades of program evolution, market outcomes, and economic analysis. The RFS mandates minimum volumes of renewable fuel blending through a nested structure based on life‐cycle greenhouse gas reductions, enforced via tradeable Renewable ...
Maria Gerveni   +3 more
wiley   +1 more source

Agricultural Decision Analysis: The Causal Challenge [PDF]

open access: yes
The paper sets out the agenda for reviewing models of decision making in the context of farmers’ use of seasonal climate forecasting. Such forecasts have been framed in terms of shifts in cumulative distribution functions of yields or gross margins ...
Parton, Kevin A.
core   +1 more source

Assessing Household Welfare in Response to Rising Food Prices in The Gambia

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT This study examines how rising food prices affected household welfare in The Gambia using nationally representative data from the 2015/16 Integrated Household Survey (IHS‐3). The analysis reflects household consumption behavior and market conditions prevailing during that period and provides a structural benchmark for understanding ...
Roger Vorsah   +3 more
wiley   +1 more source

Spatial and Temporal Distribution of Habitat Pattern of Trichiurus japonicus in the Northern South China Sea Under Future Climate Scenarios

open access: yesFishes
The impact of climate change on fish distribution has drawn increasing attention worldwide. Studying the distribution patterns and habitat evolution trends of largehead hairtail (Trichiurus japonicus), an important fishery resource in the northern South ...
Junyi Zhang   +5 more
doaj   +1 more source

Very high elevation water ice clouds on Mars: Their morphology and temporal behavior [PDF]

open access: yes
Quantitative analysis of Viking images of the martian planetary limb has uncovered the existence and temporal behavior of water ice clouds that form between 50 and 90 km elevation.
Jaquin, Fred
core   +1 more source

DIRAE study: Seasonal allergic rhinitis distribution in Spain

open access: yesAllergologia et Immunopathologia, 2013
National epidemiological study to observe if among patients with pollinic seasonal allergic rhinitis (SAR), there are differences between those visited by primary care physicians (GPs) or allergists (ALs).758 and 739 adults were recruited respectively by GPs and ALs.
A, Roger   +3 more
openaire   +2 more sources

Fermented Citrus as a Functional Food Matrix: Evaluating Probiotic, Prebiotic, and Postbiotic Potential

open access: yesAgriFood: Journal of Agricultural Products for Food, EarlyView.
Fermented citrus transforms bioactive compounds into metabolites with probiotic and prebiotic properties, enhancing gut health, immunity, and metabolic balance. This review highlights fermentation's role in developing sustainable, health‐promoting functional foods while addressing challenges in process optimization, sensory quality, and commercial ...
Sony Kumari   +3 more
wiley   +1 more source

Biotopical distribution and seasonal activity of model species of the family Gnaphosidae (Araneae) in Zemen gorge (SW Bulgaria)

open access: yesArachnologische Mitteilungen, 1994
A faunistic study was carried out for three years in Zemen gorge (1984-1986). With the help of Barber-traps 675 gnaphosid spiders were caught in 4 localities, each with 2 habitats, meadow and forest.
Deltshev, Christo, Blagoev, Gergin
doaj   +1 more source

Volatility analysis and forecasting of vegetable prices using an ARMA‐GARCH model: An application of the CF filter and seasonal adjustment method to Korean green onions

open access: yesAgribusiness, EarlyView.
Abstract The vegetable market experiences significant price fluctuations due to the complex interplay of trend, cyclical, seasonal, and irregular factors. This study takes Korean green onions as an example and employs the Christiano–Fitzgerald filter and the CensusX‐13 seasonal adjustment methods to decompose its price into four components: trend ...
Yiyang Qiao, Byeong‐il Ahn
wiley   +1 more source

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