Showing 1 - 10 of 19
The relationship between seasonal temperatures, organic loading rate (OLR) and the structure of archaeal communities in anaerobic digesters was investigated. Previous studies have often assessed archaeal<i> </i>community structure at fixed temperatures and constant OLRs, or at variable temperatures not...
Persistent link: https://www.econbiz.de/10011030761
The <i>Bacterial</i> and <i>Archaeal</i> communities in a 1.14 m<sup>3</sup> ambient temperature anaerobic digester treating dairy cow manure were investigated using terminal restriction fragment length polymorphisms (T-RFLP) and direct sequencing of the cloned polymerase chain reaction (PCR) products. Results indicate...
Persistent link: https://www.econbiz.de/10011031405
The Breusch--Godfrey LM test is one of the most popular tests for autocorrelation. However, it has been shown that the LM test may be erroneous when there exist heteroskedastic errors in a regression model. Recently, remedies have been proposed by Godfrey and Tremayne [9] and Shim <italic>et al.</italic> [21]....
Persistent link: https://www.econbiz.de/10010976052
The traditional tests for rationality have often rejected the hypothesis of rationality for survey data on expectations. It has been argued that, in the presence of unit roots, cointegration tests should be applied. The cointegration tests have often failed to reject the hypothesis of...
Persistent link: https://www.econbiz.de/10005238455
Abtract This paper presents an empirical model that analyzes the relationship between Employment protection legislation and unemployment benefits. We emphasize the censoring and arbitrary weights problems and propose an alternative method that resolves both problems simultaneously.
Persistent link: https://www.econbiz.de/10005361776
This paper utilizes the bootstrap to construct tests using the measures for goodness-of-fit for nonnested regression models. The bootstrap enables us to compute the statistical significance of the differences in the measures and to formally test on nonnested regression models. The bootstrap...
Persistent link: https://www.econbiz.de/10005260238
An econometric model is presented to compare the cost-effectiveness of two alternative procedures, percutaneous transluminal coronary angioplasty (PTCA) and coronary artery bypass surgery (CABG), for the treatment of multivessel coronary artery disease. This study utilizes the MIMIC (multiple...
Persistent link: https://www.econbiz.de/10005792732
This empirical study examines the determinants and impacts of incentive regulations introduced by utility commissions in the late 1970s and early 1980s. Rewards for generating plant utilization and low heat rates were found to have been introduced in states whose firms exhibited relatively high...
Persistent link: https://www.econbiz.de/10005711152
Persistent link: https://www.econbiz.de/10005130707
Persistent link: https://www.econbiz.de/10005193168