|
|
|
Registros recuperados: 15 | |
|
|
Bini,Dienice Ana; Canever,Mario Duarte. |
Objetiva-se neste artigo avaliar o crescimento do valor da produção (VP) do feijão e da soja no Rio Grande do Sul (RS), baseado no comportamento de seus determinantes área, rendimento e preço. Também se pretende determinar como choques nestes componentes transmitem-se de uma safra para outra no VP. Utilizaram-se dados de área, rendimento e preço do feijão preto e da soja no RS de 1977 até 2010. A metodologia shift-share permitiu decompor a importância de cada item sobre a variação do valor da produção. O ferramental de séries temporais permitiu obter o efeito de um choque em uma variável, ceteris paribus, sobre as demais. No curto prazo, o rendimento é o principal responsável pela variação do VP. Entretanto, no longo prazo, a queda dos preços reais de... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Decomposição do valor da produção; Soja; Feijão; VAR; Rio Grande do Sul. |
Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000601139 |
| |
|
| |
|
|
He, Hai. |
Taking the price of grain in Guizhou Province as an example, by establishing GARCH model, I calculate VAR of logarithm return of grain price index, in order to conduct research on the variation law of price of the agricultural products. The results show that VAR of grain in Guizhou has variation. After the year 2010, VAR value is gradually increasing, and the price variation risk of grain market tends to increase progressively. Based on the characteristics of grain price variation, a series of corresponding proposals are put forward to stabilize the grain price as follows: strengthen the agricultural infrastructure construction, and promote the agricultural overall production capacity; reinforce the market supervision on the circulation field of... |
Tipo: Article |
Palavras-chave: Price of agricultural products; Price fluctuation; GARCH model; VAR; China; Agribusiness. |
Ano: 2011 |
URL: http://purl.umn.edu/121275 |
| |
|
| |
|
| |
|
| |
|
| |
|
|
Awokuse, Titus O.. |
Existing empirical evidence on the impact of macroeconomic variables on agriculture remains mixed and inconclusive. This paper re-examines the dynamic relationship between monetary policy variables and agricultural prices using alternative vector autoregression (VAR) type model specifications. Directed acyclic graph theory is proposed as an alternative modeling approach to supplement existing modeling methods. Similar to results in other studies, this studys findings show that over the time period analyzed (19752000), changes to money supply as a monetary policy tool had little or no impact on agricultural prices. The primary macroeconomic policy instrument that affects agricultural prices is the exchange rate, which is shown to be directly linked to... |
Tipo: Journal Article |
Palavras-chave: Agricultural prices; Cointegration; Directed acyclic graphs; Monetary policy; VAR; Agricultural and Food Policy; Demand and Price Analysis. |
Ano: 2005 |
URL: http://purl.umn.edu/10239 |
| |
|
|
Kong, Minji; Han, Doo Bong; Nayga, Rodolfo M., Jr.. |
This study analyzes the interrelationship and volatility between grain and oil prices. Specifically, the objective of this study is to investigate the volatility transmission mechanism of grain prices with oil prices, under the assumption that an increase in crude oil prices not only affects corn and soybean prices but also other grain commodity prices such as wheat and rice. The results presented in this paper suggest several conclusions. First, there is a short-run relationship between the grain market and oil prices, which implies that recent co-movements of oil and grain prices are just a temporary phenomenon. Second, grain prices, except for rice, are affected by oil prices to some degree. Finally, the volatilities of oil prices influence the... |
Tipo: Presentation |
Palavras-chave: Grain prices; Volatility; Volatility Transmission; VAR; GARCH; Resource /Energy Economics and Policy. |
Ano: 2012 |
URL: http://purl.umn.edu/124377 |
| |
|
| |
|
| |
|
| |
|
|
Ahmedov, Zafarbek; Bessler, David A.. |
In this study, we apply directed acyclic graphs and search algorithm designed for time series with non-Gaussian distribution to obtain causal structure of innovations from an error correction model. The structure of interdependencies among six international stock markets is investigated. The results provide positive empirical evidence that there exist long-run equilibrium and contemporaneous causal structure among these stock markets. DAG analysis results show that Hong Kong is influenced by all other open markets in contemporaneous time, whereas Shanghai is not influenced by any of the other markets in contemporaneous time. Historical decompositions indicate that New York and Shanghai stock markets are highly exogenous and Germany and Hong Kong are the... |
Tipo: Conference Paper or Presentation |
Palavras-chave: VAR; Cointegration; Error correction; DAG; Causality; Financial contagion; Agricultural Finance; Financial Economics. |
Ano: 2011 |
URL: http://purl.umn.edu/98858 |
| |
|
|
Jayne, Thomas S.; Myers, Robert J.; Nyoro, James K.. |
The Government of Kenya pursues maize marketing policy objectives through the National Cereals and Produce Board (NCPB) which procures and sells maize at administratively determined prices, and stores maize as a contingency against future shortages. A private sector marketing channel competes with the NCPB and prices in this channel are set by supply and demand forces. This paper estimates the effects of NCPB activities on the historical path of private sector maize market prices in Kenya between 1989 and 2004. Results provide important insights into the historical effects of the NCPB, and will provide useful input into deliberations on the appropriate role for the NCPB in the future. It was not possible to use a fully structural econometric model to... |
Tipo: Conference Paper or Presentation |
Palavras-chave: Kenya; Income transfers; Maize policy; Price stabilization; VAR; International Development; C22; O2; Q13; Q18. |
Ano: 2006 |
URL: http://purl.umn.edu/25555 |
| |
|
| |
Registros recuperados: 15 | |
|
|
|