The necessity of having low-cost aerospace vehicles with short development times means that control designers need to work with simplified and approximate dynamic models. Aerospace vehicles typically being light and slender, exhibit body bending and flexibility effects at relatively lower frequencies. It may not be possible or practical in every case to carry out detailed test and analyses exer...

We present a simple and intuitive derivation of the track parameter covariance matrix due to multiple Coulomb scattering for use in track fitting with the Kalman filter. We derive all the covariance matrix elements for two experimentally relevant track parameterizations (i.e. x and y slopes and intercepts, and direction cosines and intercepts) in the presence of thin scatterers and absence of m...

In previous paper [Teich and Lachs, J. Acoust. Soc. Am 66, 1738--1749 (1979)] we demonstrated that an energy-based neural counting model incorporating refractoriness and spread of excitation satisfactorily described the results of pure-tone intensity discrimination experiments. In this paper, we show that the identical linear filter refractoriness model (LFRM) also provides proper results for p...

We performed a behavioral experiment to demonstrate the effect of spectral slope on the perception of speaker size, and we developed an auditory model based on the dynamic compressive gammachirp filterbank (dcGC-FB) to explain the results. STRAIGHT was used to generate “unvoiced” and “whispered” versions of naturally recorded words; the only difference was that the spectral slope of the whisper...

This study provides an evaluation of the latest Particulate Matter-Portable Emissions Measurement Systems (PM-PEMS) under different environmental and in-use conditions. It characterizes four PM measurement systems based on different measurement principles. At least three different units were tested for each PM-PEMS to account for variability. These PM-PEMS were compared with a UC Riverside’s mo...

It is an important branch of erosion research to control soil on eroded gullies and slopes by using vegetation filter strip. Several simulated rainfall experiments were carried out in tanks filled with loess sandy loam taken from a typical gully area less coverage Yanghe hilly basin Xuanhua District, Zhangjiakou City, Hebei Province. The water conservation effects two different setting modes co...

The performance of 40-Gb/s RZ signals through cascaded thinfilm filters is investigated by both numerical and analytical means. It is observed that the filtering effects can reduce the eye closure penalties caused by the large dispersion slope of the thin-film filters. In addition, the performance can be further improved by proper frequency detuning between the signal and the center of the filt...

This article describes the design of a tunable positive slope linear group delay filter dedicated to analog signal processing applications. The designed is composed eight second-order all-pass cells which have been optimized obtain highly global characteristic over specified bandwidth for dispersion. Each these with Gm-C topology fit ideal high efficiency. Based on sensitivity analysis topology...