The Celanese Corporation fourth quarter 2011 earnings release was distributed via BusinessWire this morning and is posted on our website, celanese.com. The PowerPoint slides referenced during this call are also posted on our website. Both items were submitted to the SEC and a current report on Form 8-K. Please note, we have made one update to slide seven of the PowerPoint presentation to clarify the outlook for the Advanced Engineered Materials was for the first quarter of 2012.
This call, management may make forward-looking statements concerning, for example, Celanese Corporation's future objectives and results, which will be made under the Safe Harbor provisions of the Private Securities Litigation Reform Act of 1995. The limitations inherent in such forward-looking statements are detailed in the earnings release referenced on Page five of the earnings release referenced during this call.
Celanese Corporation's fourth quarter 2011 earnings release references the performance measures, operating EBITDA, business operating EBITDA, affiliate EBITDA and proportional affiliate EBITDA, adjusted earnings per share and net debt as non-US GAAP measures. For the most directly comparable financial measures presented in accordance with US GAAP and our financial statements and for a reconciliation of our non-US GAAP measures to US GAAP figures, please see the accompanying schedules to fourth quarter earnings release posted on our website, celanese.com.
This morning Dave Weidman will briefly review the performance of the company and Steven Sterin will provide an overview of the business results for each segment and the financials. We have a question-and-answer period following with Dave, Steven, and Doug.I’d like to now turn the call over to Dave Weidman. Dave. Dave Weidman Jon, thanks, and welcome everyone to today’s call. Because we released our preliminary 2011 results two weeks ago, I’ll keep my prepared remarks brief, so that we can allow ample time for Doug and Steve to answer your questions.