Goodwin, GC, Doan, HB & Cantoni, A 1980, 'Application of ARMA models to automatic channel equalization', Information Sciences, vol. 22, no. 2, pp. 107-129.
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This paper describes a novel approach to automatic channel equalization in digital transmission systems. The approach is based on the use of a finite-dimensional rational approximation to the channel characteristics. This class of channel approximation has the following advantages: it allows a finite parametrization of the channel impulse response which may be of infinite duration, it allows for the possibility of the noise being colored, it applies to either single- or multiple-channel systems, and it has the pedigogical advantage that many other algorithms in current use are based on models which are special cases of this model. The rational approximation to the channel characteristics is used in the paper to develop a new receiver structure using fixed-lag smoothing ideas. Simulation studies are presented showing that the receiver offers advantages over other algorithms for mitigating the effects of intersymbol and interchannel interference including those arising from carrier phase errors. © 1980 Elsevier North Holland, Inc. All rights reserved.
Hung, NT & Anderson, BDO 1980, 'Analysis and Synthesis of Nonlinear Reciprocal Networks Containing Two Element Types and Transformers', IEEE Transactions on Circuits and Systems, vol. 27, no. 4, pp. 263-276.
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This paper presents results for some analysis and synthesis problems of nonlinear reciprocal networks. In particular, for special systems such as lossless reciprocal networks and nonlinear RC reciprocal networks, synthesis techniques are introduced. The central feature of these techniques is the method of finding an appropriate stored energy function for the synthesizing network from prescribed network equations. Under certain assumptions, the stored energy function can be determined directly from the controllability and observability matrices of a system obtained by linearization around any state of the original system. © 1980 IEEE
MILTHORPE, B 1980, 'FMFPAK1 - A PROGRAM PACKAGE FOR ROUTINE ANALYSIS OF SINGLE PARAMETER FLOW MICROFLUORIMETRIC DATA ON A LOW-COST MINI-COMPUTER', COMPUTERS AND BIOMEDICAL RESEARCH, vol. 13, no. 5, pp. 417-429.
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A program package is presented for routine analysis, on a low cost minicomputer, of data obtained by flow microfluorimetry. The programs, with the aid of a graphics capability, provide calculations of various properties of cell populations: percentage of cells in various phases of the cell-cycle (G,, S, G2 + M): mean fluorescence per cell: mean narrow-angle scatter per cell, and an approximation to relative mean volume per cell from narrow-angle light scatter measurements. The system is designed to allow either direct analysis or for storage of raw data on tape files for analysis at a later time. Provision is also made for hard copy on a digital x-y plotter.
TAYLOR, IW & MILTHORPE, BK 1980, 'AN EVALUATION OF DNA FLUOROCHROMES, STAINING TECHNIQUES, AND ANALYSIS FOR FLOW-CYTOMETRY .1. UNPERTURBED CELL-POPULATIONS', JOURNAL OF HISTOCHEMISTRY & CYTOCHEMISTRY, vol. 28, no. 11, pp. 1224-1232.
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Several preparative techniques (detergent treatment, ethanol fixation, and hypotonic cell lysis), DNA fluorochromes, and methods of numerical analysis (planimetric or curve-fitting) were compared for the estimation of cell-cycle kinetic parameters (G1, S, G2 + M) by flow cytometry. In addition, coefficients of variation (CV), relative fluorescence, and G1/chicken erythrocyte (CRBC) ratios were measured and the effects of the proportion of cycling cells and cellular RNA content were examined. DNA-fluorochromes were ranked by relative fluorescence: 4,6-diamidino-2-phenylindole > ethidium bromide/mithramycin > Hoechst 33342 > mithramycin > ethidium bromide > acridine orange ≃ propidium iodide. The first four (DNA-specific stains) gave lower CVs than the remainder (DNA intercalators). Detergent treatment also increased relative fluorescence and slightly lowered CVs. Comparable results were obtained for the kinetic parameters independently of stain or staining procedure; intercalating dyes with cells of a high RNA content not treated with RNAse and acridine orange being exceptions. Of the two methods of numerical analysis, the planimetric technique was more consistent. Although highly consistant G1/CRBC ratios were obtained for any one stain, independently of staining procedures, variations between stains were noted. It is suggested that the detergent treatment in combination with DNA-specific stains provide optimal results.
