This title was first published in 2003.Airline operating profits are well known to be volatile, and the global industry aggregate figures conceal wide differences in performance between carriers. The fundamental reasons for the poor performance of the industry as a whole were in the early 1990's that output ran too far ahead of demand, and the yield earned on output sold was insufficient to cover costs. In strategic context, this second edition uses a simple yet powerful model to explore linkages between the fundamentals of airline economics and the volatility of industry results at the operating level. Its five parts look in turn at strategic context, supply side, demand side, network management and a general conclusion.

This third edition of Straight and Level thoroughly updates the previous edition with extensive comments on recent industry developments and emerging business models. The discussion is illustrated by current examples drawn from all sectors of the industry and every region of the world. Anyone who wants to gain a deeper understanding of airline economics at a practical level and an insight into the reasons for its financial volatility should find the book of interest.

In this first in-depth sociological analysis of the movement, Ross Haenfler follows the lives of dozens of straight-edge youths, showing how for these young men and women, and thousands of others worldwide, the adoption of the straight-edge doctrine as a way to better themselves evolved into a broader mission to improve the world in which they live. Although the original definition of straight edge focused only on the rejection of mind-altering substances and promiscuous sex, modern interpretations include a vegetarian (or vegan) diet and an increasing involvement in environmental and political issues.

A 'three level tolerance algorithm' for fitting sets of straight lines to points digitized at regular depth intervals from a BT profile is discussed. The application of this algorithm to the reduction of other profile data similarly digitized is discussed. (Author).