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Experimental Study Of Lean Blowout With Hydrogen Addition In A Swirl-Stabilized Premixed Combustor, Shengrong Zhu
Experimental Study Of Lean Blowout With Hydrogen Addition In A Swirl-Stabilized Premixed Combustor, Shengrong Zhu
LSU Doctoral Dissertations
Lean premixed combustion is widely used to achieve a better compromise between nitric oxides emissions and combustion efficiency. However, combustor operation near the lean blowout limit can render the flame unstable and lead to oscillations, flashback, or extinction, thereby limiting the potential range of lean combustion. Recent interest in integrated gasification combined cycle plants and syngas combustion requires an improved understanding of the role of hydrogen on the combustion process. Therefore, in present study, combustion of pure methane and blended methane-hydrogen has been conducted in a swirl stabilized premixed combustor. The measurement techniques implemented mainly include particle image velocimetry, CH*/OH* …
Accounting Comparability, Audit Effort And Audit Outcomes, Joseph Hongbo Zhang
Accounting Comparability, Audit Effort And Audit Outcomes, Joseph Hongbo Zhang
LSU Doctoral Dissertations
The paper investigates the usefulness of accounting comparability for audit engagement. Comparability among peer firms in the same industry reflects the similarity and the relatedness of firms’ operating environment and accounting reporting. From two perspectives of “inherent business risk” and “external information efficiency”, comparability is helpful for auditors to assess client business risk and lowers the cost of information acquisition, processing, and testing. For a given firm, I hypothesize that the availability of information about comparable firms is helpful for auditors by improving audit accuracy and audit efficiency. The comparability proxy is based on a variety of measures including pair-wise …
Stock Liquidity, Price Informativeness, And Accruals-Based Earnings Management, Jing Fang
Stock Liquidity, Price Informativeness, And Accruals-Based Earnings Management, Jing Fang
LSU Doctoral Dissertations
We examine the effect of stock liquidity on accruals-based earnings management. Finance literature suggests that stock liquidity leads to price efficiency. If prices are efficient, more future earnings should be reflected in current prices. Therefore, gain from shifting accruals across periods should be low and managers should have less incentive to manage earnings. We find that higher stock liquidity is associated with higher future earnings response coefficient and lower accruals-based earnings management. Our finding has important implication for the decline in accruals-based earnings management during 2001-2005 documented in prior study. Our additional trend analysis suggests that instead of SOX and …