Aircraft noise synthesis system

A second-generation Aircraft Noise Synthesis System has been developed to provide test stimuli for studies of community annoyance to aircraft flyover noise. The computer-based system generates realistic, time-varying, audio simulations of aircraft flyover noise at a specified observer location on the ground. The synthesis takes into account the time-varying aircraft position relative to the observer; specified reference spectra consisting of broadband, narrowband, and pure-tone components; directivity patterns; Doppler shift; atmospheric effects; and ground effects. These parameters can be specified and controlled in such a way as to generate stimuli in which certain noise characteristics, such as duration or tonal content, are independently varied, while the remaining characteristics, such as broadband content, are held constant. The system can also generate simulations of the predicted noise characteristics of future aircraft. A description of the synthesis system and a discussion of the algorithms and methods used to generate the simulations are provided. An appendix describing the input data and providing user instructions is also included

Bad Checks for the Price of Goods

A seller receives a check from the buyer for the price of goods. When presented to the bank on which it was drawn, payment is refused. The buyer may, or may not, have had sufficient funds on deposit at the time the check was drawn, but insufficient when refused now although becoming sufficient immediately after the check was presented. Or the buyer may have known or have had reason to know that there would be insufficient funds to meet the check. Or the buyer never had an account at the bank. Or the one obtaining the goods may give a fictitious name and indorse the check with that name. Or he may impersonate another person and the check be a forgery. What property, if any, is transferred to the buyer? May the seller reclaim the goods from creditors of the buyer or even from a bona fide purchaser for value and without notice (including mortgagees and pledgees)? Is the answer in any, or all, of the above situations that if the check is bad no property passes except a wrongful possession? Does the property pass conditionally in reference to the buyer and his general creditors? Does the property pass subject only to avoidance for fraud (if present) on equitable principles

Bad Checks for the Price of Goods

A seller receives a check from the buyer for the price of goods. When presented to the bank on which it was drawn, payment is refused. The buyer may, or may not, have had sufficient funds on deposit at the time the check was drawn, but insufficient when refused now although becoming sufficient immediately after the check was presented. Or the buyer may have known or have had reason to know that there would be insufficient funds to meet the check. Or the buyer never had an account at the bank. Or the one obtaining the goods may give a fictitious name and indorse the check with that name. Or he may impersonate another person and the check be a forgery. What property, if any, is transferred to the buyer? May the seller reclaim the goods from creditors of the buyer or even from a bona fide purchaser for value and without notice (including mortgagees and pledgees)? Is the answer in any, or all, of the above situations that if the check is bad no property passes except a wrongful possession? Does the property pass conditionally in reference to the buyer and his general creditors? Does the property pass subject only to avoidance for fraud (if present) on equitable principles

Aircraft noise synthesis system: Version 4 user instructions

A modified version of the Aircraft Noise Synthesis System with improved directivity and tonal content modeling has been developed. The synthesis system is used to provide test stimuli for studies of community annoyance to aircraft flyover noise. The computer-based system generates realistic, time-varying audio simulations of aircraft flyover noise at a specified observer location on the ground. The synthesis takes into account the time-varying aircraft position relative to the observer; specified reference spectra consisting of broadband, narrowband, and pure tone components; directivity patterns; Doppler shift; atmospheric effects; and ground effects. These parameters can be specified and controlled in such a way as to generate stimuli in which certain noise characteristics such as duration or tonal content are independently varied while the remaining characteristics such as broadband content are held constant. The modified version of the system provides improved modeling of noise directivity patterns and an increased number of pure tone components. User instructions for the modified version of the synthesis system are provided

Space and the American imagination

The introduction will set out the principal theme of the book: that the rise of the U.S. space program was due to a concerted effort by science writers, engineers, industrialists, and civic and political leaders to create a popular culture of space exploration based on important elements of American social life (such as frontier mythology, fears about the cold war, and the rise of the consumer culture). Much of the disillusionment with the NASA space program which set in during the third decade of space flight can be traced to a widening gap between popular expectations and the reality of space exploration