reaction diffusion systems a mathematical biology approach

... – notably, nonlinear chemical kinetics and dynamic system theory – flourished Mathematical tools and computational resources became available with which to model and explain a WHAT LIES AHEAD? ... waves of electrical excitation in the heart’s myocardiac tissue propagate as spirals (Figure 1.6),18 they can lead to lifethreatening reentrant cardiac arrhythmias such as ventricular tachycardia ... NATURE USES RD Some examples of RD in nature are shown in Figure 1.2 Figure 1.2 Examples of animate (a d) and inanimate (e–h) reaction diffusion systems on various length scales (a) Calcium waves...

Ngày tải lên: 04/06/2014, 15:05

... characterization and accuracy After data normalization, each joint angular profile was mathematically characterized to obtain a synthetic representation of motion and facilitate the extraction of spatial, ... Multi-finger coordination in healthy subjects and stroke patients: a mathematical modelling approach Ilaria Carpinella1*, Johanna Jonsdottir2 and Maurizio Ferrarin1 Abstract Background: Approximately 60% ... treated separately and only amin, amax and ROM, as calculated from the measured data, were included in the analysis Statistical analysis Considering the small sample of data, comparisons were made...

Ngày tải lên: 19/06/2014, 08:20

... the channel measurement reporting for channel adaptation mechanism (e.g., the power control and the adaptive modulation and coding) is usually carried out frame-by-frame basis If the channel ... changes largely during a frame, the channel estimation is likely to be inaccurate, and the system performance can be severely degraded To avoid this situation, the frame length in practical systems ... is assumed that the channel state for a CR transmitter-receiver pair does not vary during a frame For pilot signal, a total of M × L OFDM symbols are transmitted in a frame (see Figure 2) We assume...

Ngày tải lên: 21/06/2014, 05:20

... rules (Nakasuka and Yoshida, 1992; Shaw et al., 1992; Aydin and Oztemel, 2000; Jahangirian and Conroy, 2000; Jeong, 2000; Subramaniam et al., 200 0a) The idea of this approach is to dynamically switch ... OF NOTATIONS AHP Analytic Hierarchy Process ANOM Analysis of Means ANOVA Analysis of Variance BD Machine Breakdown BN Bayesian Network DA Decision Analysis DOE Design of Experiment DID Dynamic ... algorithm (Jahangirian and Conroy, 2000; Jeong, 2000; Tay and Ho, 2008), simulated annealing (Jeong, 2000), Analytic Hierarchy Process (Subramaniam et al., 200 0a) , intelligent agent (Nakasuka...

Ngày tải lên: 11/09/2015, 09:09

... ways The relay feedback approach, for its simplicity and light-computational load, is a good candidate However, due to dissimilarity of linear and nonlinear systems, there are still great challenges ... linear-nonlinear hybrid systems are mainly categorized into time domain based and frequency domain based approaches For the time domain approach, current existing methods based on relay-feedback ... between a measured plant variable and a desired setpoint by calculating and then outputting a corrective action that can adjust the process accordingly and rapidly, to keep the error minimal • Gain...

Ngày tải lên: 14/09/2015, 14:06

... measured leakage values with graphpad prism software Gas exchange measurement Exchange rates of CO2 were measured with an infrared gas analysis system (Uras G; Hartmann & Braun AG, Frankfurt am ... Heyer AG (2010) Mathematical modelling of the central carbohydrate metabolism in Arabidopsis thaliana reveals a substantial regulatory influence of vacuolar invertase on whole plant carbon metabolism ... cold acclimation through assembly of reaction details In the present study, a systems biology approach with dynamic modelling was developed and validated by experimental data on two Arabidopsis accessions,...

Ngày tải lên: 14/02/2014, 22:20

... this article as: Henkel et al.: A systems biology approach to analyse leaf carbohydrate metabolism in Arabidopsis thaliana EURASIP Journal on Bioinformatics and Systems Biology 2011 2011:2 Abbreviations ... a statistical analysis of the parameter space was used to determine whether a given steady state of a metabolite is always stable or whether it may be unstable for certain values of the normalized ... presented a kinetic modelling approach to simulate and analyse diurnal dynamics of carbohydrate metabolism in A thaliana Based on simulated fluxes in leaf cells, we could assign possible physiological...

Ngày tải lên: 21/06/2014, 03:20

... has yet to be elucidated [151, 153] 1.4.3.1 Dynamic localization of class IIa HDACs as a means of gene regulation HDACs 4, and 7, together with HDAC9 form a subclass of HDACs (class IIa) that ... feedback against calcium activation by GnRH, affecting pathways downstream of calcium, particularly the MAPKs 1.3.2.3 The function of Gem as a negative regulator of the Rho-Rho kinase pathway in ... unlikely that Gem acts similarly to Ras in activating some of the key MAPK pathways Rather than being a bona fide GTPase, it is more a guanine nucleotide-binding protein Another notable characteristic...

Ngày tải lên: 11/09/2015, 09:11

... (1977), axiom A2 has been named K and principle A3 has been named T Already in Lewis and Langford (1959), A4 was referred to as and A5 as Later, axiom A6 has been named D Thus, different systems are ... behind TeamLog from Kim Does, Harmen Wassenaar, Alina Strachocka and Andrzej Szałas In addition, Kim, Michał and Alina also offered a great support by bringing numerous technical tasks to a successful ... string aba is embeddable in itself, in aaba and in abca (notation aba ≤ abca), but not in aabb Parikh and Krasucki (1992) extend this notion to so-called C-embeddability for the epistemic language...

Ngày tải lên: 18/02/2014, 15:20

... graphed as an arrow and, as discussed later, may be assigned a rate parameter often designated as k Some examples are introduced to indicate in a narrative fashion how compartmental analysis can ... estimation are far more complicated than of linear parameter estimation The latter can be done exactly, whereas nonlinear parameter estimation always requires an iterative, trial and retrial approach ... degree They have had graduate courses in biostatistics, biomedical computing, and at least one area of biology, as well as an interest in quantitative, analytical approaches to biomedical studies...

Ngày tải lên: 11/06/2014, 16:42

... Yeh, “Exact multiplicity of solutions and S-shaped bifurcation curves for the p-Laplacian perturbed Gelfand problem in one space variable,” Journal of Mathematical Analysis and Applications, ... S V Parter, “Solutions of a differential equation arising in chemical reactor processes,” SIAM Journal on Applied Mathematics, vol 26, pp 687–716, 1974 12 D H Sattinger, A nonlinear parabolic ... Wiley Series in Mathematical and Computational Biology, John Wiley & Sons, Chichester, UK, 2003 R S Cantrell and C Cosner, “Density dependent behavior at habitat boundaries and the Allee effect,”...

Ngày tải lên: 21/06/2014, 16:20

... of reaction- diffusion equations,” Archive for Rational Mechanics and Analysis, vol 129, no 1, pp 47–100, 1995 J.-S Guo, S Sasayama, and C.-J Wang, “Blowup rate estimate for a system of semilinear ... quenching in a system of heat e equations coupled at the boundary,” Journal of Mathematical Analysis and Applications, vol 346, no 1, pp 145–154, 2008 R Ji and S Zheng, “Quenching behavior of solutions ... semilinear parabolic equations,” Communications on Pure and Applied Analysis, vol 8, no 2, pp 711–718, 2009 10 M Wang, “Blow-up rate estimates for semilinear parabolic systems, ” Journal of Differential...

Ngày tải lên: 21/06/2014, 16:20

... necessary to have a model of EURASIP Journal on Advances in Signal Processing stream dynamics Stream dynamics a ect the APP of positive data arriving at each classifier, which in turn a ects each ... binary classifier partitions input data objects into two classes, a “yes” class H and a “no” class H A binary classifier chain is a special case of a binary classifier tree, where multiple binary ... entire chain, which is calculated by the probability EURASIP Journal on Advances in Signal Processing Table 1: Summary of parameter types and a few examples Type of parameter for vi Static parameters...

Ngày tải lên: 21/06/2014, 19:20

... performances of two approaches: transmit-first OSA (TFOSA) approach and transmit-last OSA (TLOSA) approach TFOSA means that the secondary user starts to transmit at the first time slot and keeps transmitting ... utilization of optimal OSA approach is still better than that of TFOSA approach In (b), both collision probability increase of optimal OSA approach and that of TFOSA approach are more than 0.01 ... utilization of optimal OSA approach is much better than that of TFOSA approach and converges to its theoretical value The collision probability of optimal OSA is close to that of TFOSA approach, and...

Ngày tải lên: 21/06/2014, 19:20

... appropriate transformation method It has been reported that the ANFIS systems trained on transformed data sets achieve better performance and faster convergence in general There are many transformation ... take care of overtraining In a sense, the so-called ‘‘overtraining’’ term indicates that a given ANFIS adapts itself too well to the training data set in such a way that further improvement based ... both data sets (i.e., training, and checking data sets) Eventually, it reaches a value less than 0.5 after 200 epochs The correlated function, namely, Y = F(X), using the ANFIS approach is also...

Ngày tải lên: 21/06/2014, 20:20

... Springer, Berlin, Germany, 1978 H Leiva, A lemma on C0 -semigroups and applications PDEs systems, ” Quaestiones Mathematicae, vol 26, no 3, pp 247–265, 2003 R F Curtain and H Zwart, An Introduction ... positive, in fact we can find matrices D with a and d been negative and having positive eigenvalues For example, one can consider the following matrix: −6 , −2 D 1.7 whose eigenvalues are ρ1 and ρ2 The ... whose infinitesimal generator A is given by ∞ Az z∈D A Aj Pj z, 2.11 j with ⎧ ⎨ D A ∞ ⎩ j z∈Z: Aj P j z ⎫ ⎬

Ngày tải lên: 21/06/2014, 20:20

... analysis, the random variable Ui is approximated as a Gaussian random variable having zero mean and variance σ u 3.2 Probability density function of MAI in Nakagami-m fading The Nakagami-m fading distribution ... m is the Nakagami-m fading i α parameter We have used the Nakagami-m fading model since it can represent a wide range of multipath channels via the m parameter For instance, the Nakagami-m distribution ... mean and variance against the alternative data that does not have a normal distribution This test compares the empirical distribution of the given data with a normal distribution having the same...

Ngày tải lên: 22/06/2014, 19:20

... Adiabatic flame temperature, °F Refinery Gases (Dry) Waste Gases Natural Gas LPG Cracked Coking Reforming FCC Refinery Gas Refinery Gas PSA Flexicoking Gas Gas Gas Sample Sample Gas Gas Tulsa Alaska ... by Taylor & Francis Group, LLC Refinery Gases (Dry) Natural Gas LPG Waste Gases Fuel Gas Component Tulsa Alaska Netherlands Algeria Propane Butane Cracked Gas Coking Gas Reforming Gas FCC Gas Refinery ... of Combustion Systems: A Practical Approach TABLE A. 3 (CONTINUED) Chemical, Physical, and Thermal Properties of Gases: Gases and Vapors, Including Fuels and Refrigerants, English and Metric Units...

Ngày tải lên: 13/08/2014, 05:22

... by Taylor & Francis Group, LLC Circumference (in.) Area (in.) Area (ft) 558 Modeling of Combustion Systems: A Practical Approach TABLE B.1 (continued) Areas and Circumferences of Circles and ... by Taylor & Francis Group, LLC Circumference (in.) Area (in.) Area (ft) 562 Modeling of Combustion Systems: A Practical Approach TABLE B.1 (continued) Areas and Circumferences of Circles and ... by Taylor & Francis Group, LLC Circumference (in.) Area (in.) Area (ft) 564 Modeling of Combustion Systems: A Practical Approach TABLE B.1 (continued) Areas and Circumferences of Circles and...

Ngày tải lên: 13/08/2014, 05:22

... potential Enthalpy, molar Enthalpy, specific Enthalpy, volumetric Entropy, molar Flow rate, molar Flow rate, specific Flow rate, volumetric Force Free energy, molar Gas constant, universal Heat Heat ... energy, molar Gas constant, universal Heat Heat capacity, molar Heat capacity, specific Heat flux Heat transfer coefficient Heating value, molar Heating value, specific ft/sec2 ft2 lbm/ft3 lbmol/ft3 lbm/ft3 ... © 2006 by Taylor & Francis Group, LLC Unit Dimensions for Some Combustion-Related Quantities Examples Acceleration Area Concentration, mass Concentration, molar Density Diameter Energy Energy,...

Ngày tải lên: 13/08/2014, 05:22