Resonance Frequency of Carriages for Linear Roller Guides

Modelling 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 ...

Routing of Railway Carriages

In the context of making timetables for railway companies the following railway carriage routing problem occurs. Given a timetable containing rail links with departure and destination times/stations and the composition of the trains, nd a routing of railway carriages such that always the needed carriages are available if a train departs. We will present a local search approach for this routing ...

Bugs in Railway Carriages

Sir,?With reference to Major Cornwall's letter in the February number of the Indian Medical Gazette, I would state that Hydrocyanic Gas has been used for some years to cleanse from bugs the sleeping carriages on the Cape Government Railways. Reference to this will be found in the report of the Government Entomologist of the Cape of Good Hope for the year 1901. The results were satisfactory and ...

Remedy for the Bugs in Railway Carriages

Optimum Coupling for Random Guides with Frequency-Dependent Coupling

S. E. Miller, “Coupled wave theory and waveguide applications, ” Bell Syst. Tech. J., vol. 33, pp. 661-720, May 1954. S. A. Schelkunoff, “Conversion of Maxwell’s equations into generalized telegraphist’s equations, ” Bell Syst. Tech. J., vol. 34, pp. 995-1043, Sept. 1955. W. H. Louisell, Coupled Mode and Parametric Electronics. New York: Wiley, 1960. S. E. Miller, “ Waveguide as a communication...