Nonstationarity in the Specification of the Environmental
نویسندگان
چکیده
Numerous studies have addressed the question of the econometric specification of the Environmental Kuznets Curve (EKC). This paper adds preliminary results on nonstationarity and its effect on functional form using a panel data set for the U.S. by state from 1929 to 1994. It is found that unit-root tests strongly support a unit root in pollutants (sulfur dioxide and nitrogen oxide) and income when testing individual states. The results from panel data unit root tests provide mixed evidence about nonstationarity in EKC data.
منابع مشابه
The Value of Panoramic Radiography in Gender Specification of Edentulous Iranian Population
Introduction: gender specification among the forensic dentistry and human anthropology, is mainly based on anatomic variations. Due to racial differences and environmental factors such as time of tooth extraction, osteoporosis, dietary habits, usage of dental prosthetics and periodontal diseases, there will be different results achieved. The purpose of this study is to classify the gender speci...
متن کاملA model for specification, composition and verification of access control policies and its application to web services
Despite significant advances in the access control domain, requirements of new computational environments like web services still raise new challenges. Lack of appropriate method for specification of access control policies (ACPs), composition, verification and analysis of them have all made the access control in the composition of web services a complicated problem. In this paper, a new indepe...
متن کاملCorrugated Box Production Process Optimization Using Dimensional Analysis and Response Surface Methodology
Response surface methodology (RSM) is a statistical method useful in the modeling and analysis of problems in which the response variable receives the influence of several independent variables, in order to determine which are the conditions under which should operate these variables to optimize a corrugated box production process. The purpose of this research is to create response surface mode...
متن کاملIndustrial waste disposal alternatives in the process of aromatic compounds in petrochemical industry (case study: Nouri petrochemical complex, Asaluyeh, Iran
Application of aromatic compounds has dramatically increased as raw materials in various industries and different factories have been established to produce aromatic compounds. The current research aims at characterizing industrial waste generation in aromatics production process in petrochemical industries and determining the best feasible alternative for waste disposal. For this purpose, the ...
متن کاملDetermination of Climate Changes on Streamflow Process in the West of Lake Urmia With Used to Trend and Stationarity Analysis
One of the most important hydrological time series task is to determine if there is any trend in the data and how to achieve stationarity when there is nonstationarity behavior in data. Detecting trend and stationarity in hydrological time series may help us to understand the possible links between hydrological processes and global climate changes. In this study yearly, monthly and daily stream...
متن کامل