A Note on Fire Frequency
نویسنده
چکیده
5 The concepts of hazard of burning, fire interval and fire cycle are 6 considered. It is claimed that the current notion of fire cycle is poorly 7 defined (since the time required to burn a specified area is a random 8 variable). It is shown that the expected time to burn an area equal 9 to the study area normally exceeds the fire interval (the average time 10 between fires at any location). In view of this it is recommended that 11 the notion of fire cycle in its current form be abandoned. 12
منابع مشابه
بررسی کاهش شنوایی شغلی آتش نشانان تهران
Hearing loss is a controversial occupational disease in fire fighters because exposure to hazardous levels of noise in this job is so variable and unpredictable. In this study, audiometric assessments were performed on 117 fire fighters to evaluate their hearing loss. The results showed that the average fire fighter has a characteristic noise-induced threshold shift, with maximum hearing loss o...
متن کاملA Note on Free Vibration of a Double-beam System with Nonlinear Elastic Inner Layer
In this note, small amplitude free vibration of a double-beam system in presence of inner layer nonlinearity is investigated. The nonlinearity is due to inner layer material and is not related to large amplitude vibration. At first, frequencies of a double-beam system with linear inner layer are studied and categorized as synchronous and asynchronous frequencies. It is revealed that the inner l...
متن کاملModelling of Resonance Frequency of MEMS Corrugated Diaphragm for Capacitive Acoustic Sensors (TECHNICAL NOTE)
In this paper, a new model for resonance frequency of clamped circular corrugated diaphragm has been presented. First, an analytical analyzes has been carried out to derive mathematic expressions for mechanical sensitivity of diaphragm with residual stress. Next by using Rayleigh's method we present mathematical model to calculate the resonance frequency of corrugated diaphragm and investigate ...
متن کاملNeuronal Coding of pacemaker neurons - A random dynamical systems approach
The behaviour of neurons under the influence of periodic external input has been modelled very successfully by circle maps. The aim of this note is to extend certain aspects of this analysis to a much more general class of forcing processes. We apply results on the fibred rotation number of randomly forced circle maps to show the uniqueness of the asymptotic firing frequency of ergodically forc...
متن کاملFire history of oak–pine forests in the Lower Boston Mountains, Arkansas, USA
Perspective on present day issues associated with wildland fire can be gained by studying the long-term interactions among humans, landscape, and fire. Fire frequency and extent over the last 320 years document these interactions north of the Arkansas River on the southern edge of the Lower Boston Mountains. Dendrochronological methods were used to construct three fire chronologies from 309 dat...
متن کامل