نتایج جستجو برای: food price change

تعداد نتایج: 917935  

2013
Rosemary Green Laura Cornelsen Alan D Dangour Rachel Turner Bhavani Shankar Mario Mazzocchi Richard D Smith

Objective To quantify the relation between food prices and the demand for food with specific reference to national and household income levels. Design Systematic review with meta-regression. Data sources Online databases of peer reviewed and grey literature (ISI Web of Science, EconLit, PubMed, Medline, AgEcon, Agricola, Google, Google Scholar, IdeasREPEC, Eldis, USAID, United Nations Food and ...

2012
Bethany Woods Getu Hailu

With the recent financial crisis and its enduring fallout, questions surrounding the state of global food security have become more pressing. A key element influencing the nutritional status of the world’s poor is price behavior within global food commodity markets. In recent decades, food commodity markets have experienced both significant price increases, and an increase in volatility. These ...

2010
Maximo Torero Joachim von Braun

The 2007–08 food price crises caused hardship on a number of fronts in countries throughout the world. The steep rise in food prices led to economic difficulties for the poor and generated social and political turmoil in many countries. Haiti, Egypt, Bangladesh, Cote D'Ivoire, Uzbekistan, Yemen and Indonesia are among the 33 countries that saw violent food riots, demonstrations, or social unres...

2012
Xin Jin

This paper studies the behavior of crude oil spot and futures prices. Oil prices, particularly spot and short-term futures prices, appear to have switched from I(0) to I(1) in early 2000s. To better understand this apparent change in persistence, a factor model of oil prices is proposed, where the prices are decomposed into long-term and short-term components. The change in the persistence beha...

Journal: :Sustainability 2023

Food price bubbles are a phenomenon in which the cost of some food items or commodities climbs quickly and unreasonably before collapsing due to reasons such as speculation, supply demand imbalances, meteorological occurrences, governmental actions. Governments academics keep an eye on prices spot address these bubbles. The aim this paper is analyze bubble despite global slowdown by examining i...

1998
John Mackinnon

A temporary-equilibrium model replicating institutional features of low-income agricultural economies is developed. In this model, food is held as an asset; because food production is relatively volatile, those with negative temporary income are net buyers of food. When food is the only asset, asset effects are likely to reduce the price-elasticity of the demand for food and can make it tatonne...

2014
Paola De Agostini

This paper investigates the effect of price variations on the diet composition in Britain. It describes the dynamics of food demand in relation to food prices over time using data from the British National Food Survey (NFS) covering the period 1975-2000. Demand elasticities with respect to price elasticities are estimated by solving a quadratic almost ideal demand system (QUAIDS) model controll...

2011
Junyu Chen

This paper empirically examines the relationship between trading intensity and price in the US existing home markets. In particular, I have tested two recent theories, the search model by Wheaton (1990) and the "downpayment" model by Stein (1995). The search model predicts that trading volume should positively affect real home price, while the "downpayment" model predicts that, with liquidity c...

Journal: :Journal of health economics 2009
Lisa M Powell

This study draws on four waves of the 1997 National Longitudinal Survey of Youth and external data to examine the relationship between adolescent body mass index (BMI) and fast food prices and fast food restaurant availability using panel data estimation methods to account for individual-level unobserved heterogeneity. Analyses also control for contextual factors including general food prices a...

Journal: :Journal of the experimental analysis of behavior 2014
Anthony DeFulio Rachelle Yankelevitz Christopher Bullock Timothy D Hackenberg

Six pigeons were studied in a token economy in which tokens could be produced and exchanged for food on one side of an experimental chamber and for water on the opposite side of the chamber. Responses on one key produced tokens according to a token-production fixed ratio (FR) schedule. Responses on a second key produced an exchange period during which tokens were exchanged for water or food. In...

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