نتایج جستجو برای: agricultural risks

تعداد نتایج: 218428  

Journal: :European Review of Agricultural Economics 2023

Abstract The existence of a negative variance risk premium on agricultural futures contracts suggests that market participants pay to hedge unexpected increases in the volatility these contracts. In this paper, we decompose corn and soybeans markets into jump diffusive components using options data from 2009 2021. We find average only but not those volatility. Furthermore, growing season uncert...

Hamid Reza Alipour Mohammad Aghapour Sabbagi Mohammad Kavoosi Kelashemi

Using Telser and Kataoka models of probabilistic-risky mathematical programming, the present research is to determine the optimized pattern of cultivating the agricultural products of Shoshtar region under risky conditions. In order to consider the risk in the mentioned models, time period of agricultural years 1996-1997 till 2004-2005 was taken into account. Results from Telser and Kataoka mod...

Investment in the agricultural sector is important because this sector greatly affects the realms of providing food independence and security, employment, sustainable development, and environmental preservation. So, this study investigated the socio-economic impacts (direct and indirect effects) of the investment development policy on the agricultural sector and its sub-sectors in Iran in 2011 ...

2004
David J. Spielman Klaus von Grebmer

International Food Policy Research Institute discussion papers contain preliminary materials and research results and are circulated prior to a full peer review in order to stimulate discussion and critical comment. It is expected that most discussion papers will eventually be published in some other form, and their content may be revised. ABSTRACT Public-private partnerships offer potentially ...

2012
Ayubu J. Churi Malongo R. S. Mlozi Siza D. Tumbo Respickius Casmir

Crop production risk caused by climate variability cannot be managed in the absence of climate information. Despite the use of various communication strategies by rural communities in Tanzania, access and use of agricultural information is inadequate to cope with challenges in crop production. This study aims at assessing farmers information needs, examine communication strategies used and henc...

ژورنال: علوم آب و خاک 2020

Given the climatic changes and threats to food security in recent years, they have have become a major issue in agricultural climatology. The present study aimed to investigate the status of agricultural climate suitable for the cultivation of rice in the light of the influential climatic conditions in the past. Given the effect of temperature and the amount of precipitations on rice growth and...

2014
Edward J M Joy E Louise Ander Scott D Young Colin R Black Michael J Watts Allan D C Chilimba Benson Chilima Edwin W P Siyame Alexander A Kalimbira Rachel Hurst Susan J Fairweather-Tait Alexander J Stein Rosalind S Gibson Philip J White Martin R Broadley

Dietary micronutrient deficiencies (MNDs) are widespread, yet their prevalence can be difficult to assess. Here, we estimate MND risks due to inadequate intakes for seven minerals in Africa using food supply and composition data, and consider the potential of food-based and agricultural interventions. Food Balance Sheets (FBSs) for 46 countries were integrated with food composition data to esti...

Journal: :Salud colectiva 2013
Lourdes Camarena Ojinaga Christine von Glascoe Concepción Martínez Valdés Evarista Arellano García

The objective of this study was to learn the perceptions of indigenous female day laborers regarding health-related risks in the workplace, based on their own characterization of the requirements of agricultural work. The concept of occupational risk is understood as a flexible construct in which work conditions and the different perceptions and lived experiences of social actors are interrelat...

Journal: :Journal of occupational and environmental medicine 2005
Virginia Lope Marina Pollán Per Gustavsson Nils Plato Beatriz Pérez-Gómez Nuria Aragonés Berta Suárez José Miguel Carrasco Silvia Rodríguez Rebeca Ramis Elena Boldo Gonzalo López-Abente

OBJECTIVE The objective of this study was to identify occupations and industries with increased incidence of thyroid cancer in Swedish workers. METHOD Standardized incidence ratios were computed for each job and industry for the period 1971-1989 through record-linkage with the Swedish National Cancer and Death Registers. Age-, period-, geographically adjusted relative risks were calculated us...

2009
John P. McCarty Joel G. Jorgensen L. LaReesa Wolfenbarger

BACKGROUND Understanding the behavior of birds in agricultural habitats can be the first step in evaluating the conservation implications of birds' use of landscapes shaped by modern agriculture. The existence and magnitude of risk from agricultural practices and the quality of resources agricultural lands provide will be determined largely by how birds use these habitats. Buff-breasted Sandpip...

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