Results 201 to 210 of about 2,953,647 (260)
Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment
Molecular Oncology, EarlyView.This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
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Perturbation Analyses for the QR Factorization
SIAM Journal on Matrix Analysis and Applications, 1997Summary: This paper gives perturbation analyses for \(Q_1\) and \(R\) in the QR factorization \(A=Q_1R\), \(Q_1^TQ_1=I\) for a given real \(m\times n\) matrix \(A\) of rank \(n\) and general perturbations in \(A\) which are sufficiently small in norm. The analyses more accurately reflect the sensitivity of the problem than previous such results.
Chang, Xiao-Wen +2 more
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Scandinavian Journal of Psychology, 1962
Werdelin, I. Synthesis of factor analyses. I. The theoretical background. Scand. J. Psychol., 1962, 3, 143–154.—When performing a series of factor analyses, we must be able to compare the different solutions. From a discussion of mathematical invariance theory, a number of assumptions are deduced, which are necessary when we perform a series of ...
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Werdelin, I. Synthesis of factor analyses. I. The theoretical background. Scand. J. Psychol., 1962, 3, 143–154.—When performing a series of factor analyses, we must be able to compare the different solutions. From a discussion of mathematical invariance theory, a number of assumptions are deduced, which are necessary when we perform a series of ...
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Factor analysed hidden Markov models
IEEE International Conference on Acoustics Speech and Signal Processing, 2002This paper presents a general form of acoustic model for speech recognition. The model is based on an extension to factor analysis where the low dimensional subspace is modelled with a mixture of Gaussians hidden Markov model (HMM) and the observation noise by a Gaussian mixture model.
A-V.I. Rosti, M.J.F. Gales
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The Journal of Psychology, 1966
(1966). Factors and Factor Analyses. The Journal of Psychology: Vol. 64, No. 2, pp. 159-166.
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(1966). Factors and Factor Analyses. The Journal of Psychology: Vol. 64, No. 2, pp. 159-166.
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Factor Analyses of Format Frequencies
The Journal of the Acoustical Society of America, 1971The exact relationship between the phonetic quality of a vowel and its formant frequencies has never been stated, because it has not been possible to account for the variations due to the personal quality of a speaker. We have analyzed the fundamental and first three formant frequencies of the eight primary cardinal vowels as spoken by 11 phoneticians ...
Mona Lindau +2 more
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Refined Error Analyses of Cholesky Factorization
SIAM Journal on Numerical Analysis, 1983This paper concentrates on the practical Cholesky process for solving positive definite symmetric systems of linear equations in standard floating-point arithmetic. Two self-contained round-off analyses are presented, which lead to novel a posteriors error bounds (of practical use) and to refined a priori results (of more theoretical significance ...
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