Showing papers on "Occupancy published in 1977"
TL;DR: In this paper, a distinction between transmission occupancy and message occupancy is made between channels and bands of similar channels, and the measurement time required to determine if a given channel is occupied is considered.
Abstract: Spectrum occupancy for channels and bands of similar channels is defmed. A distinction is made between transmission occupancy and message occupancy. The measurement time required to determine if a given channel is occupied is considered as well as the time required to estimate the degree of transmission occupancy with a given statistical confidence. Nonparametric (distribution-free) statistical techniques are employed to obtain this estimate and to determine the sample size required to establish confidence bounds for a set of channel or band transmission occupancy values.
69 citations
01 Mar 1977
TL;DR: In this article, the seasonal variations in occupancy parameters observed in 1974 were due to the energy crunch, and that 1975 data variations were significant only at a 90 percent confidence level, suggesting that real differences must be assumed to exist until proven otherwise.
Abstract: Studies in Minnesota show that the seasonal variations in occupancy parameters observed in 1974 were due to the energy crunch, and that 1975 data variations were significant only at a 90 percent confidence level, suggesting that real differences must be assumed to exist until proven otherwise. The inconclusive results suggest the need for further studies to accurately determine the nature of seasonal changes. The studies showed that car pooling increased significantly in 1973/1974, and that the energy crunch influence did not continue beyond 1974. Significant differences occur in occupancy parameters at different subareas of a corridor, and such variations could be used to pinpoint special focus areas for promoting carpooling or preferential treatments. Auto occupancy parameters vary significantly from day-to-day. Individual site variations may not follow the area pattern. It was also observed that carpool promotion efforts have not generated measurable increases in occupancy parameters. The study parameters and the data sources are described, and details are given of the sampling procedure and the statistical design.
3 citations
Patent•
07 Jan 1977
TL;DR: In this paper, the authors propose a fire escape for large buildings, for example hospitals, apartment buildings, hotels, schools, industrial buildings, and theatres, which can be attached to the outside of the building, on a facade having a safety outlet on each single floor.
Abstract: It is well known that large buildings, for example hospitals, apartment buildings, hotels, schools, industrial buildings, theatres, etc. shall be provided with a fire escape attached to the outside of the building, on a facade having a safety outlet on each single floor. For the purpose, naturally, to allow the occupants of the building, in case of fire or similar, to leave the inside of the building in danger through the said safety outlets then using the fire escape. Numerous kinds of fire escapes are already known without, however, satisfying all the requisites and exigencies required.
2 citations