In this paper, we describe and contrast these approaches, and discuss several issues associated with futility analyses, such as ethical considerations, whether or not type I error can or should be reclaimed, one-sided vs two-sided futility rules, and the impact of futility analyses on power.
You can open an AutoCAD DWG or DXF file for review, and then add your comments. For example, you might want to review and annotate a CAD drawing and then return it to the person who created it. On the File menu, click Open. Under Files of type, click AutoCAD Drawing.
Choose Adobe Reader or Acrobat as the default PDF viewer (Acrobat 6.0-7.0, Adobe Reader 6.0-7.0 on Mac OS X). You can choose Adobe Reader or Adobe Acrobat as the default viewer for PDF files by changing the file association in Mac OS X. Note: The default viewer for PDF documents in Mac OS X is Preview.ou can choose Adobe Reader or Adobe Acrobat as the default viewer for PDF files by changing the file association in Mac OS X. Note: The default viewer for PDF documents in Mac OS X is Preview.