Physiologically realistic simulations of computational islets of beta cells require the long-time solution of several thousands of coupled ordinary differential equations (ODEs), resulting from the combination of several ODEs in each cell and realistic numbers of several hundreds of cells in an islet. For a reliable and accurate solution of complex nonlinear models up to the desired final times...

Multi-level cell (MLC) NAND flash memories are very popular storage media because of their power efficiency and big storage capacity. This paper proposes to use nonlinear t-error-correcting codes to replace linear BCH codes for error detection and correction in MLC NAND flash memories. Compared to linear BCH codes with the same bit-error correcting capability t, the proposed codes have the adva...

Two classes of nonlinear feedforward logic (NLFFL) pseudonoise (PN) code generators based on the use of AND and majority logic (ML) gates are compared. Crosscorrelation and code-division multiple-access (CDMA) properties of properly designed NLFFL sequences are found to be comparable with the properties of well-known linear PN codes. It is determined that code design employing ML gates with an ...

We present a novel joint nonuniform illumination estimation and deblurring method for bar code signals based on a penalized nonlinear squares objective function. The objective function is based on the proper parameterization of a bar code signal and nonuniform illumination as well as a regularization on the illumination using a smoothness penalty. By the minimization of the objective function, ...

This paper presents a general introduction to the optimization methods which form the basis of the large-scale nonlinear optimization package LANCELOT written by Conn, Gould and Toint. That is, we propose here a comprehensive overview of the principal tools selected by the authors of LANCELOT, among the classical large-scale nonlinear optimization tools, to develop their code. This description ...

The linear flow analysis of turbomachinery aeroelasticity views the unsteady flow as the sum of a background nonlinear flow field and a linear harmonic perturbation. The background state is usually determined by solving the nonlinear steady flow equations. The flow solution representing the amplitude and phase of the unsteady perturbation is instead given by the solution of a large complex line...

Introduction The nonlinear growth of neoclassical tearing modes (NTMs) in tokamaks is commonly discussed in the framework of the generalized Rutherford equation (GRE) [1, 2]. We perform a theoretical / numerical validation of the GRE by means of numerical simulations implementing the set of 2D reduced MHD equations for the helical magnetic flux ψ and the potential φ [3]. The code uses finite di...

Abst+act-The problem of minimizing the vertex count at a given time index in the trellis for a general (nonlinear) code is shown to be NP-complete. Examples are provided that show that 1) the minimal trellis for a nonlinear code may not be observable, i.e., some codewords may be represented by more than one path through the trellis and 2) minimizing the vertex count at one time index may be inc...

Purpose: This paper reports on a project aimed at moving Foster’s Nonlinear Model of Information Seeking Behaviour forwards from an empirically based model focussed on one setting and towards one that is robustly transferable and enables testing of the model in other information seeking situations. Methodology: The method utilised recoding of the original dataset, comparison of code decisions, ...