purpose: to evaluate agreement between galilei, orbscan ii, and placido disk-based topography in terms of keratometry readings, and anterior and posterior elevation. methods: in this prospective comparative study, 184 eyes of 92 keratorefractive surgery candidates were evaluated with galilei, orbscan ii, and placido disk-based topography. keratometry readings and anterior and posterior elevatio...

This study investigated the similarities and differences in the marketing strategies implemented by the hospitality industry in two ski resort towns in Canada and the United States to meet the needs of visitors. A census of all the accommodations and restaurants in Sutton (Quebec) and Lake Placid (Upstate New York) was visited, and a tourism market basket was assessed for each ski resort town. ...

Claudia Hawkins, Oche Agbaji, Placid Ugoagwu, Chloe L. Thio, Muazu M. Auwal, Charles Ani, Chinedum Okafo, Erika Wallender, and Robert L. Murphy Northwestern University, Chicago, Illinois; Department of Medicine, University of Jos and Jos University Teaching Hospital, HIV Clinic, Jos University Teaching Hospital, Nigeria; Johns Hopkins University, Baltimore, Maryland; and Vanderbilt University M...

background and importance: disk sequestration can be defined as a herniated disk with perforation of the fibrous ring (or outermost annulus fibrosus) and posterior longitudinal ligament with migration of the disk fragment to the epidural space. even after the introduction of high-resolution magnetic resonance imaging (mri), it is still frequently misinterpreted as neoplastic masses. unfortunate...

The busy beaver is an example of a function which is not computable. It is based on a particular class of Turing machines, and is defined as the largest number of 1’s that can be printed by a terminating machine with n states. Whilst there have been various quests to determine the precise value of this function (which is known precisely only for n ≤ 4), our aim is not to determine this value pe...

MARK LAWLEY*, SPYROS REVELIOTIS and PLACID FERREIRA Department of Industrial Engineering, University of Alabama, Box 870288, Tuscaloosa, AL 35487-0288, USA School of Industrial and Systems Engineering, Georgia Institute of Technology, 765 Ferst Drive, Atlanta, GA 30332-0205, USA Department of Mechanical and Industrial Engineering, University of Illinois at Urbana Champaign, 361 Computer and Sys...

MARK LAWLEY*, SPYROS REVELIOTIS and PLACID FERREIRA Department of Industrial Engineering, University of Alabama, Box 870288, Tuscaloosa, AL 35487-0288, USA School of Industrial and Systems Engineering, Georgia Institute of Technology, 765 Ferst Drive, Atlanta, GA 30332-0205, USA Department of Mechanical and Industrial Engineering, University of Illinois at Urbana Champaign, 361 Computer and Sys...