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| Collins, Robert A.; Baker, Gregory A.. |
| The popular press has triumphantly announced that the cause of the obesity epidemic is “junk food.” After a moment’s reflection, however, it seems likely that the true causal structure of the obesity epidemic can be neither single-equation nor univariate. Therefore, while the hypothesis that “junk food” is the cause of obesity has little a priori plausibility, these articles in the popular press present a testable hypothesis that, in spite of some measurement impossibilities, is tested here. While one can always argue about p values etc., it is safe to say that the results show no evidence to indicate support for a causal link. The second section of the paper explains this result and suggests a rudimentary structural model of obesity that begins to address... |
| Tipo: Journal Article |
Palavras-chave: Obesity; Junk food; Granger-causality; Research Methods/ Statistical Methods; Teaching/Communication/Extension/Profession; Q10; Q16. |
| Ano: 2009 |
URL: http://purl.umn.edu/53799 |
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| Weber, Sascha A.; Salamon, Petra; Hansen, Heiko. |
| Since the stepwise reduction of intervention prices combined with watered down conditions and suspended export refunds, respectively, the EU dairy industry faces new challenges regarding wild price fluctuations originally caused in third countries. In the past, the EU domestic market was insulated as far as possible from world markets. However, today global prices could affect prices even at the level of consumers, but more directly at the level milk producers. Volatility noticeable increased with the price peak in 2007, followed by the drop in 2008, and a new price boost in 2010. Additionally, reduced security in marketing of butter and skimmed milk powder led to higher processing share of cheese which is not only exported but also increasingly consumed... |
| Tipo: Presentation |
Palavras-chave: Price transmission; Cointegration; Granger-causality; Dairy; Risk and Uncertainty; C1; E3; E6; F3; Q1. |
| Ano: 2012 |
URL: http://purl.umn.edu/122542 |
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| Power, Gabriel J.; Vedenov, Dmitry V.. |
| Commodity and energy prices have exhibited an unprecedented increase between October 2006 and July 2008, only to fall sharply during the last months of 2008. Many explanations have been offered to this phenomenon, including steadily increasing demand from China and India, large mandated increases in ethanol production, droughts in some key agricultural producer countries, production plateaus in some major oil-producing countries, refinery capacity limits, demand pressure from the derivatives market owing to the diversification properties of commodities, etc. Clearly, agricultural input, output, and energy products are closely related economically. In addition to biofuels, the connection points include nitrogen-based solution liquid fertilizers, fossil... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Commodity prices; Commodity bull cycle; Energy prices; Granger-causality; Graph theory; Structural VAR.; Agribusiness; Agricultural and Food Policy; Agricultural Finance; Demand and Price Analysis; Financial Economics; Research Methods/ Statistical Methods. |
| Ano: 2009 |
URL: http://purl.umn.edu/49538 |
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