... OPTIMIZING METHODS AND TOOLS Edited by Harry Edmar Schulz, André Luiz Andrade Simões and Raquel Jahara Lobosco Trang 2Hydrodynamics – Optimizing Methods and Tools Edited by Harry Edmar Schulz, André ... Optimizing Methods and Tools, Edited by Harry Edmar Schulz, André Luiz Andrade Simões and Raquel Jahara Lobosco p cm ISBN 978-953-307-712-3 Trang 3free online editions of InTech Books and Journals ... equations and procedures followed to study fluid motion, the books “Fundamentals of Hydro and Aerodynamics“ and “Applied Hydro and Aerodynamics“ by Prandtl and Tietjens (1934) present the theory and
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... kernel function and h is the bandwidth Then, we can reconstruct the field over a regular grid and render the boundary set of the points by using standard isosurface extraction Trang 5methods to extract ... isovalue We choose parameter h and c to guarantee that S(h, c)is connected and has avolume of minimum extension The kernel function should be sufficiently smooth and have a small compact support ... small compact support For example, we can choose K(p) = (1− || p ||2)2for|| p || ≤1 and K(p) = 0 otherwise and the bandwidth h to be equal to the longest length of the minimum spanning tree of these
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Advanced Methods and Tools for ECG Data Analysis - Part 2 doc
... design of a useful system, and ensure the associated patient safety issues andregulations can be addressed For relevant background reading on hardware and software issues, Mohan et al [2] and Oppenheim ... shifting the right and left arm (RA and LA)electrodes together with the right and left leg (RL and LL) electrodes Welinder et al [20] compared the susceptibility of the EASI and Mason-Likar systems ... to test proposed algorithms on freely available (annotated) data, usingstandard tools and metrics Without such data and tools, it is impossible to judgethe scientific merit of a particular approach,
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Advanced Methods and Tools for ECG Data Analysis - Part 3 docx
... noises and artifacts (see above) that can occur simultaneously, and partially because these noises and artifacts are often transient, and largely unpredictable in terms of their onset and duration. ... variety of normal and pathological conditions is possible by using a value of x as low as 20 ms or less, rather than the standard 50 ms threshold. This tool, and many of the standard HRV tools, are ... input feature space. See Chapters 12 and 13 for further discussions of training, test, and validation data sets. 3.6 Noise and Artifact in the ECG 3.6.1 Noise and Artifact Sources Unfortunately,
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Advanced Methods and Tools for ECG Data Analysis - Part 4 ppsx
... ml/s), and voltage, to pressure (P , mmHg) The model consists of six compartments which represent the left and right ventricles (l ,r ), systemic arteries and veins (a, v), and pulmonary arteries and ... highly realistic, and includes no P wave, and no variations intiming or morphology and discontinuities In contrast to this, ECGSYN is basedupon time-varying differential equations and is continuous ... complex numbers with amplitudes√ S( f ) and phases that are randomly distributed between 0 and 2π By multiplying this time series by an appropriate scaling constant and adding an offset value, the resultingtime
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Advanced Methods and Tools for ECG Data Analysis - Part 5 pdf
... and baseline wander (BW), and (4) power-line interference, sinusoidal noise with f ≈ 33 Hz ±2 Hz. Figure 5.10 illustrates the time series, power spectra, and distributions of ferent signals and ... data, and are therefore methods of blind source separation (BSS) (Blind because the axes of projection and therefore the sources are determined through theapplication of an internal measure and ... training patterns and D the number of input nodes to the network (the length of each ECG complex in our examples) W has dimension p × D and elements wij and T has dimensions M × p and elements t
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Advanced Methods and Tools for ECG Data Analysis - Part 6 docx
... strengths and limitations of TWA analysis methods, broadly compris-ing short-term Fourier transform (STFT)–based methods (highpass linear filtering),sign-change counting, and nonlinear filtering methods ... featurelocations and parameters derived from these (such as the P, Q, and T onset and hencethe PR and QT interval) are easily extracted Onsets and offsets are conventionallydifficult to locate in the ECG, ... z(n) − i δta i θ iexp whereθ i = (θ −θ i )mod(2 π) and η is a random additive noise Note that η replaces the previous baseline wander term and describes all the additive sources of processnoise
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Hydrodynamics Optimizing Methods and Tools Part 3 docx
... Hydrodynamics – Optimizing Methods and Tools dv dt Pout Pin L d2 v (34) dy where Pin , Pout - the pressure at Г and Г accordingly; , , L are the density, dynamic viscosity and the channel ... 2008): pin v i t , (24) 56 Hydrodynamics – Optimizing Methods and Tools where the velocity divergence at right hand side of above equation is calculated using formula (14) The radius-vectors ... ) p(0) d where p(0) is initial pressure and p(T ) is the pressure at any other moment T (31) 58 Hydrodynamics – Optimizing Methods and Tools In the numerical computations the value of...
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Hydrodynamics Optimizing Methods and Tools Part 4 pdf
... Function and A can be any scalar field or continuous function The small difference between the equation (10) and the standard equation that uses 90 Hydrodynamics – Optimizing Methods and Tools mj/i ... = 1.0 mm/ms and We = 4.5 The time scale is given in milliseconds 93 94 Hydrodynamics – Optimizing Methods and Tools From the values of density, relative velocity, droplet diameter and surface ... Optimizing Methods and Tools This wave front begins to form little satellite drops and increases its amplitude until t=1.8x10-3ms There is no substantial growth of these satellite drops and the...
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Hydrodynamics Optimizing Methods and Tools Part 5 doc
... in the right hand side is zero We also know that ∇ · ω = and therefore we have 114 Hydrodynamics – Optimizing Methods and Tools Will-be-set-by-IN-TECH ∇ · (∇λ × ∇μ ) = (34) h= (35) and we finally ... Hydrodynamics – Optimizing Methods and Tools Will-be-set-by-IN-TECH 10 where w is the enthalpy and ρ the density field For this work we will consider, for simplicity and without loss of generality, ... representation Eq (58) as 122 Hydrodynamics – Optimizing Methods and Tools Will-be-set-by-IN-TECH 14 μ i = x i + μ ip , (88) λi and the other fields and φ in Eq (58) are periodic In order to we also...
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Hydrodynamics Optimizing Methods and Tools Part 6 pdf
... density, n=(ρA+ρB)/2 and number density difference, Φ=(ρA-ρB)/2, where ρA and ρB stand for the density of fluid A and fluid B, respectively The parameter n is proportional to pressure and approximately ... analytical (Rathjen & Jiji, 1971) and numerical (LB) (Jiaung et al., 2001; Lin & Chen, 1997) solutions are available in the 140 Hydrodynamics – Optimizing Methods and Tools literature is now presented ... of (a) interface position and (b) isotherm at t 0.25 for the twodimensional solidification problem (Chatterjee, 2010) 141 142 Hydrodynamics – Optimizing Methods and Tools by employing a LB model...
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Hydrodynamics Optimizing Methods and Tools Part 7 pdf
... where ρ and μ are density and viscosity, respectively Choice of the velocity scale u s and geometric scale ls depends on the given problem 176 Hydrodynamics – Optimizing Methods and Tools Will-be-set-by-IN-TECH ... bubble growth and departure to some extent 170 Hydrodynamics – Optimizing Methods and Tools Fig Propagation of temperature field 3.4.4 Characteristics of two bubbles growth on and departure ... V and pressure P as sum of 194 Hydrodynamics – Optimizing Methods and Tools Will-be-set-by-IN-TECH 20 two functions ˆ V = CV + V, ˆ P = CP + P , where discrete analogues of the functions C V and...
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Hydrodynamics Optimizing Methods and Tools Part 8 ppt
... segregated algorithms and pure density-based approach on structured grids Proposed method does not require preconditioners and relaxation 200 26 Hydrodynamics – Optimizing Methods and Tools Will-be-set-by-IN-TECH ... Optimizing Methods and Tools following algorithm Let us formulate the Cohonen neural network with three inlet variables presented by the coordinates of available computation nodes x and y, and also ... input Fig Neural network computing structure 202 Hydrodynamics – Optimizing Methods and Tools variables are distributed and "move" along the connections of the corresponding input together with...
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Hydrodynamics Optimizing Methods and Tools Part 9 pdf
... 3.8 Synthetic discharge difference and system response for different periods of oscillation 600 240 Hydrodynamics – Optimizing Methods and Tools periods: 60 and 120 seconds Fig 3.8b presents the ... vs ws t x y (3) 248 Hydrodynamics – Optimizing Methods and Tools where S and the subscript, s, denote the free surface elevation and velocity components at the surface, respectively Because ... was computed and applied 2.2 Turbulence closure model There are six turbulence closure models included: constant, parabolic and mixing length eddy viscosity models, and standard, RNG and non-linear...
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Hydrodynamics Optimizing Methods and Tools Part 10 ppt
... Hydrodynamics – Optimizing Methods and Tools 4.3 Helical secondary current and submerged weirs Fig 17 shows a plan view of the simulated 3D flow and comparison of computed and measured secondary ... the weir and show a similar pattern: the contour lines align parallel to the weirs and widen near the tips of the weirs This distribution 268 Hydrodynamics – Optimizing Methods and Tools W 2.08 ... channel and the display cross-sections 260 Hydrodynamics – Optimizing Methods and Tools The cross-sections in Fig are from upstream (Fig 9a) to downstream (Fig 9k), with the outer bank on the left and...
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Hydrodynamics Optimizing Methods and Tools Part 11 pot
... (4) 314 Hydrodynamics – Optimizing Methods and Tools where H is the vapour enthalpy, H and hi are the overall and convective heat transfer coefficients, and m is the membrane thermal conductivity ... interface and it is based on convective schemes The volume fraction are bounded between the values and (values that correspond to the two limiting phases) 294 Hydrodynamics – Optimizing Methods and Tools ... Hydrodynamics – Optimizing Methods and Tools Bubbles and drops were “formed” in the numerical simulations, as shown in Fig 16 However, the sizes of both depend of the numerical mesh used, and, in this sense,...
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Hydrodynamics Optimizing Methods and Tools Part 12 pptx
... Optimizing Methods and Tools Hyd entrance length, LH [m] Parallel-plates channels are the most common structure for plate -and- frame modules They are simple, and easy to assemble In plate -and- frame ... Conditions (a) and (b) are gas-water system, (c) and (d) are time-course in the hydrate formation, hydrate slurry and hydrate plug (Tajima et al., 2007) 342 Hydrodynamics – Optimizing Methods and Tools ... tube -and- shell heat 322 Hydrodynamics – Optimizing Methods and Tools exchanger In most industrial modules, however, the distribution of capillary is far more arbitrary; the capillaries are randomly...
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