Results 171 to 180 of about 9,499 (219)
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A Control Chart for the Multivariate Coefficient of Variation
Quality and Reliability Engineering International, 2015Existing charts in the literature usually monitor either the mean or the variance of the process. However, in certain scenarios, the practitioner is not interested in the changes in the mean or the variance but is instead interested in monitoring the relative variability compared with the mean.
Wai Chung Yeong +3 more
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Metabolic Control Analysis: Separable Matrices and Interdependence of Control Coefficients
Journal of Theoretical Biology, 1998A central quantity for the analysis of the interdependence of control coefficients is the Jacobian H of the pathway. For a simple metabolic chain, H is known to be tridiagonal. Its inverse H-1, which is required to calculate control coefficients, is semi-separable.
Elsner, Ludwig, Giersch, Christoph
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ON CONTROLLED DIFFUSION PROCESSES WITH UNBOUNDED COEFFICIENTS
Mathematics of the USSR-Izvestiya, 1982The paper is devoted to the general theory of controlled diffusion processes in a domain of a d-dimensional space in the absence of constraints on the growth of the coefficients at infinity. It turned out that the most suitable object of study is the payoff function in the optimal stopping problem for the controlled process.
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A Control Chart for the Coefficient of Variation
Journal of Quality Technology, 2007When monitoring variability in statistical process control, conventional Shewhart R and S charts are used where the in-control readings have a constant variance. These charts cannot be used, however, in certain instances when the coefficient of variation, rather than the variance, must be constant. A chart is proposed that is similar to the S chart and
Chang W. Kang +3 more
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ON THE CONTROLLABILITY OF LINEAR SYSTEMS WITH CONSTANT COEFFICIENTS
Mathematics of the USSR-Sbornik, 1978In the case where the constraint set ? contains the point 0, by using the methods of linear algebra the problem of 0-controllability of a linear system with constant coefficients is reduced to the problem of 0-controllability of a linear system with constant coefficients and with a matrix whose eigenvalues are all real and positive.
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On the Sign Pattern of Metabolic Control Coefficients
Journal of Theoretical Biology, 1996The sign of a flux (concentration) control coefficient of an enzyme determines if the metabolic flux (metabolite concentration) will increase or decrease when the enzyme concentration is increased/decreased. In general, the sign of a control coefficient depends on the magnitudes of the enzyme elasticities, fluxes etc.
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Control charts for the coefficient of variation
Statistical Papers, 2016zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Guo, Baocai, Wang, Bing Xing
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Numerical interpretation of controllability coefficients in nonlinear dynamics
Communications in Nonlinear Science and Numerical Simulation, 2023This paper considered a numerical framework that can be used to provide some clue as how to interpret the role played by numerical and symbolical controllability coefficients. The framework does not require computing such coefficients which is admittedly difficult for larger systems. The main differences of this paper to the existing literatures is the
Luis Antonio Aguirre +2 more
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A linear controller for systems with ?noise? coefficients
Ukrainian Mathematical Journal, 1986The paper is concerned with a control system described by linear ordinary differential equations with time-variable coefficients which are defined by a homogeneous Markov process. The control parameters in the form of linear functions of state variables are found by minimizing the mean value of a quadratic functional.
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Problems with control in the coefficients of Elliptic equations
Mathematical Notes of the Academy of Sciences of the USSR, 1983Let \(D\subset {\mathbb{R}}^ n\) be a bounded domain with sufficiently smooth boundary \(\Gamma\) and \(V\subset {\mathbb{R}}^ m\) be a bounded set. The following problem is considered: \[ \int_{D}| u_ 1(x)-u_ 2(x)|^ 2dx+\alpha \int_{D}| v(x)-v^ 0(x)|^ 2dx\to \min, \] -(\(\partial /\partial x_ i)a_{ij}(x,v)u_{sx_ j}+a(x,v)u_ s=f(x,v)\), \(x\in D\), \(s=
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