COMPETITION AND PERFORMANCE IN THE AIRLINE INDUSTRY

The paper examines the airline industry ten years after the Airline Deregulation Act of 1978. A brief review of the historical background of regulation and the changes leading to the Airline Deregulation Act is presented. A number of studies are cited that conclude that airline perfor- mance has improved since the Civil Aeronautics Board days. The author agrees with these conclusions but goes on to suggest that it is time to begin comparing the airline industry today with the standards of performance associated with perfect competition instead of the previous regulatory period. A standard of competitive performance is suggested. The traditional p=mc=ac performance is complicated because mc and ac decline for any airline flight until the plane is full or has a 100% load factor. The author suggests p=acat load factors are not yet reaching loo%, it is suggested that some policy modifications might help improve performance further. An- titrust is examined and some other institutional policy changes are sug- gested.     

Pete Maravich's incredible heart

Postmortem examination of a former professional basketball player revealed an abnormal heart, most notably a single coronary artery. The literature on single coronary arteries is briefly reviewed, and the possible mechanism which caused the patient's condition is considered. This case is particularly unusual because of the patient's profession, which is so physically demanding.     

WASHINGTON,DU BOIS AND PLESSY V. FERGUSON

Law and Philosophy -     

Sensitivity of various study technics in blood stains

Quadratic pieces of fleece measuring 16 mm2 were soaked with 10 different blood-samples in the dilution steps of 1:1, 1:10, 1:100, 1:1000, respectively, and were tested in blood group typing and identification tests of forensic serology. The above spezified dilutions correspond with 5 microliters, 0.5 microliter, 0.05 microliter and 0.005 microliter of blood, respectively. The detection limit of the microspectrometric test for blood was the dilution 1:10, of the porphyrine test a dilution above 1:100, whereas the preliminary test for blood (peroxidase) succeeded always up to a dilution of 1:1000 and the species determination by the radial immunodiffusion test in agar gels succeeded in most cases op to a dilution of 1:1000. The detection limit of the anti-human globulin inhibition test was between the dilution steps 1:10 and 1:100 when non-titrated and undiluted anti-human globulin serum was used. Gc- and ABO-grouping were possible up to a dilution of 1:100 and were thus the most sensitive grouping systems. Phenotyping of the enzyme-systems and the Gm/Km-system usually required stains with considerably higher blood concentrations i.e. stains of undiluted blood.