نتایج جستجو برای: q41
تعداد نتایج: 167 فیلتر نتایج به سال:
صنایع انرژیبر، بخش قابل توجهی از مصرف انرژی بخش صنعت را بخود اختصاص دادهاند. در سال 90، بیش از 75 درصد از مصرف فرآوردههای نفتی بخش صنعت، مربوط به صنایع انرژیبر بوده است. در این راستا توجه به بهبود کارایی مصرف انرژی در این بخش از اهمیت ویژهای برخوردار میباشد. بهبود کارایی در مصرف انرژی پیامدهایی نظیر اثرات بازگشتی و اثرات معکوس خواهد داشت، چرا که کاهش مصرف انرژی متناسب با بهبود کارایی رخ ن...
Despite the presence of 90% of double-fuel taxis (gasoline + CNG) in the urban taxi fleet, fuel consumption choices are more dependent on pricing policies and factors such as gasoline subsidies and quotas, and with the slightest change in fuel rates and quotas, use natural gas fuel. . Impact and challenge fuel management in the public transport fleet. The main purpose of this is to identify way...
In this paper, we empirically investigate the relationship between oil price changes and output in a group of oil exporting countries. The dynamics of business cycles in Libya, Saudi Arabia, Nigeria, Kuwait, Venezuela and Qatar are modeled by alternative regime switching models. We show that the extension of uni-variate Markov Switching model in order to include oil revenue improves dating busi...
در این تحقیق کارایی مصرف نهایی انرژی در صنایع بزرگ ایران با استفاده از یک تابع تقاضای تعدیل جزیی برآورد و مورد تجزیه و تحلیل قرار می گیرد. ضرایب مدل شامل نرخ تعدیل پویا، کشش های قیمتی مستقیم و غیرمستقیم کشش های درآمدی و ضریب سرمایه بری بوده که به تفکیک حامل های سه گانه انرژی شامل: برق، گاز طبیعی و فرآورده های نفتی با استفاده از آمار ترکیبی دوره (378 1-358 1) برآورد گردیده اند. مدل برای دو گروه ...
This paper evaluates a series of programs, run by a company called OPOWER, to send Home Energy Report letters to residential utility customers comparing their energy use to that of their neighbors. Using data from randomized natural eld experiments at 600,000 treatment and control households across the United States, I estimate that the programs reduce energy consumption by 1.1 to 2.8 percent ...
We focus on residential electricity and gas demand, and ask three research questions. First, how does residential energy use respond to prices? We specifically wish to examine whether ownand cross-price elasticities have changed in recent years, given the evolution of the energy market. Second, is such responsiveness sensitive to equipment and energy choices that are not easily reversed (e.g., ...
In an e¤ort to reduce energy use, governments in the United States and many other countries subsidize energy e¢ cient lightbulbs or ban traditional incandescent bulbs. We evaluate one important rationale for these policies: that imperfect information or attentional biases cause consumers to purchase more incandescents than they would in their private optima. We formalize a model of consumer cho...
Four cases of late onset clear cell renal cell carcinoma (RCC), a case of gastric cancer, and a case of exocrine pancreatic cancer were identified in a Japanese family. In order to elucidate the underlying mechanism for tumorigenesis in this family, extensive genetic studies were performed including routine and spectral karyotyping (SKY), fluorescence in situ hybridisation (FISH), comparative g...
The present paper seeks to cast scepticism on the validity and value of the results of all earlier studies in India on energy demand analysis and forecasting based on time series regression, on three grounds. (i) As these studies did not care for model adequacy diagnostic checking, indispensably required to verify the empirical validity of the residual whiteness assumptions underlying the very ...
Consumerschoices depend on preferences over outcomes and beliefs about how their choices map into these outcomes. While economic models typically assume some form of rational expectations or "perfect beliefs, in reality consumers are often ill-informed or confused. In this paper, I elicit beliefs over the nancial bene ts and costs of higher or lower fuel economy using the Vehicle Ownership a...
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