نتایج جستجو برای: as a result of higher crude oil prices
تعداد نتایج: 23443945 فیلتر نتایج به سال:
abstract the main purpose of this study was to investigate whether there was any significant difference between the speaking achievement of learners who were trained by means of consciousness raising of sociolinguistic skills and that of learners who were trained without the above mentioned task. the participants of this study consist of 60 intermediate level students participating languag...
The strategy are in the planning of oil price changes in the short and long term. Therefore, producers should seek to analyze the behavior of crude oil prices in the short and long term in order to adjust their plans. the price level in the oil market is associated with high fluctuations, many producers in the market seek to reduce exchange risk. This article aims to analyze the behavior of oil...
background: much of the environment is affected by petroleum contamination. it imposes serious health problems for humans as well as serious environmental impact. bioremediation is an important consideration for removing environmental pollutants because, compared with other technologies, it incurrs lower costs and is environmentally compatible. methods: crude oil degrading bacteria were isolate...
the degradation of crude oil under a no-control and dispersant-control setting was evaluated using loss of biological activity test, microbial population growth and measurements of optical transmittance of test media. comparison of the toxicity of crude oil under the no-control setting to crude oil-dispersant mixture revealed that the mixture was about 2 times more toxic than the crude oil unde...
Title of thesis: COMPARING REGIME-SWITCHING MODELS IN TIME SERIES: LOGISTIC MIXTURES: vs. MARKOV SWITCHING Dimitrios V. Paliouras Master of Science, 2007 Thesis directed by: Professor Benjamin Kedem Department of Mathematics The purpose of this thesis is to review several related regime-switching time series models. Specifically, we use simulated data to compare models where the unobserved stat...
from 1950s onward, new theories and critical approaches burgeoned across humanities. these theories were context-oriented; as a result, the analysis of discursive practices gained significance. thus, social, political, historical and cultural discourses that have been hitherto marginalized and considered inferior to literary texts, were introduced as important texts to be analyzed by critics. o...
The price of Iranian crude oil in different markets depends on the price of US crude oil. In recent months, the oil and gas industry and the sale of Iranian crude oil and the co-operation and investments of oil companies operating in the field of oil field development have halted. Therefore, examining the effects of US government policies on the oil market is very effective. The most important ...
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...
The price of a barrel of crude oil doubled within a few months last year. Although prices have been easing lately, for those who paid more than $3 for a gallon of gas, the memory is not likely to fade quickly. But worries about higher gas prices don’t end at the pump. Oil price shocks—sudden and sharp increases in the price of oil and its derivatives like gasoline—are associated in the popular ...
Gasoline accounts for about half the U.S. consumption of petroleum products, and its price is the most visible among these products. As such, changes in gasoline prices are always under public scrutiny. Many claim to observe an asymmetric relationship between gasoline and oil prices—specifically that gasoline prices respond more quickly when oil prices are rising than when oil prices are fallin...
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