scientific trends and developments

... handle mismatch conditions, such as joint factor analysis (JFA), Nuisance attribute projection (NAP), and principal component 16 New Trends and Developments in Biometrics 14 New Trends and Developments ... verification Computer Speech and Language, 22(1):17–38, Jan 2008 24 New Trends and Developments in Biometrics 22 New Trends and Developments in Biometrics [15] Sahar E Bou-Ghazale and John H L Hansen ... Σγ exp − (x − µ γ )T Σ −1 (x − µ γ ) γ (9) New Trends and Developments in Biometrics New Trends and Developments in Biometrics where x, µ γ ∈ R D and Σ γ : R D �→ R D In Equation 9, µ γ is the...

Ngày tải lên: 05/03/2014, 22:20

... Netherlands Wood B.D and Whitaker S 1998 Diffusion and reaction in biofilms, Chem Eng Sci., 53, 397– 425 Wood B.D and Whitaker S 2000 Multi-species diffusion and reaction in biofilms and cellular ... ordered and disordered porous media III: Closure and comparison between theory and experiment, Transport Porous Med., 15, 31– 49 Quintard M and Whitaker S 1994d Transport in ordered and disordered ... (Whitaker, 1986a; Quintard and Whitaker, 1994a–e; Whitaker, 1999) It is important to understand that Figures 1.1 and 1.2 The Art and Science of Upscaling are not drawn to scale and thus are not consistent...

Ngày tải lên: 01/04/2014, 10:12

... Engineering: Trends and Developments Edited by Miguel A Galán and Eva Martin del Valle Copyright  2005 John Wiley & Sons, Inc., ISBN 0-470-02498-4 (HB) Chemical Engineering Trends and Developments ... Netherlands Wood B.D and Whitaker S 1998 Diffusion and reaction in biofilms, Chem Eng Sci., 53, 397– 425 Wood B.D and Whitaker S 2000 Multi-species diffusion and reaction in biofilms and cellular ... ordered and disordered porous media III: Closure and comparison between theory and experiment, Transport Porous Med., 15, 31– 49 Quintard M and Whitaker S 1994d Transport in ordered and disordered...

Ngày tải lên: 01/04/2014, 10:12

... same time and place (Fig 3) None of the glands (right and left parotid glands, and right submandibular and sublingual glands) showed an attenuated response Regression curves for each gland (Fig ... most effective salivation in each gland, including the right parotid, left parotid, right submandibular and sublingual and left submandibular and sublingual glands As a result, the most effective ... parotid and submandibular glands was 89 Hz-S (Fig 2A-a, 2B-a) Furthermore, as shown in Figures 2A-b and 2A-c, and 2B-b, 2B-c, 2B-d and 2B-e, no difference was found among the various glands Because...

Ngày tải lên: 19/06/2014, 19:20

... orders@intechweb.org Vibration Analysis and Control – New Trends and Developments, Edited by Francisco Beltrán-Carbajal p cm ISBN 978-953-307-433-7 free online editions of InTech Books and Journals can be found ... Vibration Analysis and Control – New Trends and Developments Adaptive tuned vibration absorbers – an overview “Tuning” a TVA involves making the appropriate adjustment of ωa and this is done through ... achieve a given change 10 Vibration Analysis and Control – New Trends and Developments in ωa However, the actuator has to work against much larger forces and the variability in ωa is clearly limited...

Ngày tải lên: 19/06/2014, 19:20

... characteristics for moveable-masses ATVA 18 Vibration Analysis and Control – New Trends and Developments 4.2 Physical implementation and testing Fig 19 shows the moveable-masses ATVA with motor-incorporated ... v = V sin θ , dθ =ω dt (22a,b) 20 Vibration Analysis and Control – New Trends and Developments where, by substitution of (21) into (22b) and integration: ⎧ ωi t ⎪ ⎪ ⎪ θ = ⎨0.5 ⎡ ω f − ωi t f ... F0 and ω denoting the amplitude and frequency of the excitation force, respecively In order to simplify the analysis we have assumed that c1 ≈ 30 Vibration Analysis and Control – New Trends and...

Ngày tải lên: 19/06/2014, 19:20

... Vol 50, pp 834-842 48 Vibration Analysis and Control – New Trends and Developments liquid damper (MTLD) system is investigated by Fujino and Sun(Fujino and Sun, 1993) They found that in situations ... NJ 46 20 Vibration Analysis and Control – New Trends and Developments Vibration Control Korenev, B.G & Reznikov, L.M (1993) Dynamic Vibration Absorbers: Theory and Technical Applications, Wiley, ... ⎧ Hθ (ω )⎫ iωt ⎨ ⎬=⎨ ⎬e ⎩ h ⎭ ⎩ H h (ω )⎭ (6) 50 Vibration Analysis and Control – New Trends and Developments where Hθ (ω ) and H h (ω ) are transfer functions in the frequency domain Substituting...

Ngày tải lên: 19/06/2014, 19:20

... to earthquake in x, y and θ directions are expressed with x0, y0 and θ0, respectively Also, the response with liquid 66 Vibration Analysis and Control – New Trends and Developments dampers subjected ... response and 0.005 m/s2 (Wyatt, 1989) Fig 12 shows the percentage of time during which the R-factor is over 1, 2, 3, and The values 86 Vibration Analysis and Control – New Trends and Developments ... considered in the frequency bandwidth of interest The transfer function G (1) is thus approximated by a truncated one as follows 74 Vibration Analysis and Control – New Trends and Developments G (s) N...

Ngày tải lên: 19/06/2014, 19:20

... model and verified it using simulation and experiment Du et al., 2005 98 Vibration Analysis and Control – New Trends and Developments proposed H-infinity control algorithm for vehicle MR damper and ... Vibration Analysis and Control – New Trends and Developments Hanagan, L.M., Murray, T.M & Premaratne, K (2003b) Controlling floor vibration with active and passive devices, The Shock and Vibration ... Analysis and Control – New Trends and Developments (a) MR damper (b) piston (3-D view) Fig Schematic configuration of the proposed MR damper and where η is the viscosity of the MR fluid and is...

Ngày tải lên: 19/06/2014, 19:20

... (1) 122 Vibration Analysis and Control – New Trends and Developments where α2 and ω2 are the angular position and angular speed of the upper lever, respectively M21, M22 and Ms2 are the viscous ... Modeling and identification of a small-scale magneto-rheological damper, J Intelligent Material Systems and Structures, vol 20, pp 825-835 130 Vibration Analysis and Control – New Trends and Developments ... a vehicle up and down on its springs, and also damp out much of the wheel bounce when the unsprung weight of a wheel, hub, axle and sometimes brakes and differential bounces up and down on the...

Ngày tải lên: 19/06/2014, 19:20

... controller and GPI observers for the estimation of unknown perturbations yields good attenuation properties and an overall robust performance 144 Vibration Analysis and Control – New Trends and Developments ... 10 Sprung mass displacement response using controller (20) and observer (23).) 146 Vibration Analysis and Control – New Trends and Developments Vibration Control 16 Active Passive 0.8 0.6 Acceleration ... Vibration Analysis and Control – New Trends and Developments Vibration Control Conclusions In this chapter a robust active vibration control scheme, based on real-time estimation and rejection of...

Ngày tải lên: 19/06/2014, 19:20

... (PGA=4.0 [m/s2 ]) 165 15 166 Vibration Analysis and Control – New Trends and Will-be-set-by-IN-TECH Developments 16 Fig Time histories of r15 and a15 for BCJL2 wave (Optimized structure, PGA=4.0 ... optimum value of pre strain, which is material dependent, can be selected and 174 Vibration Analysis and Control – New Trends and Developments adopted in vibration control applications Mathematical ... Vibration Analysis and Control – New Trends and Developments transition from linearly elastic to super-elastic occurs at a stress of approximately 597 MPa The yield stress of 597 Mpa and ultimate stress...

Ngày tải lên: 19/06/2014, 19:20

... coordinates and are now zero, i.e., X = X = External forces are applied at co-ordinates and and the reactions happen at co-ordinates and T 212 Vibration Analysis and Control – New Trends and Developments ... 3038 ,268-76 196 Vibration Analysis and Control – New Trends and Developments Clark, P W; Aiken, I D; Kelly, J M; Higashino, M and Krumme, R C(1996) Experimental and analytical studies of shape memory ... 190 Vibration Analysis and Control – New Trends and Developments The error function, erf(x) ,and the unit step function, u(x) are defined as follows erf (...

Ngày tải lên: 19/06/2014, 19:20

... response functions, Mechanical Systems and Signal Processing, Vol 25, No 3, ISSN: 0888-3270, 940-951 216 Vibration Analysis and Control – New Trends and Developments Vakakis, A.F (1985) Dynamic ... Control – New Trends and Will-be-set-by-IN-TECH Developments dynamic loads This combined with the fact that maintenance and constant supervision of WTs at offshore locations is expensive and very ... configuration with the constants Kr and Cr denoting the spring stiffness and damping in the rotor shaft, and similarly; K g and Cg as representing the spring stiffness and damping in the generator shaft...

Ngày tải lên: 19/06/2014, 19:20

... that 252 Vibration Analysis and Control – New Trends and Developments both displacement and acceleration can be obtained from the velocity sensor by means of the integral and derivative computation ... input and output can be represented as: Y = CX + DU where Y is the output vector, C the output matrix and D the feedthrough matrix (22) 258 Vibration Analysis and Control – New Trends and Developments ... control strategies and on the evaluation of the adopted solutions compared to existing methods 262 Vibration Analysis and Control – New Trends and Developments References Anderson E., Leo D.J.,...

Ngày tải lên: 19/06/2014, 19:20

... Tektronix TCPA300 amplifier and TCP303 current probe, which 272 Vibration Analysis and Control – New Trends and Developments provides up to 15 MHz of frequency range, and acquired at 50 MHz during ... of tolerant and flexible rules is a more realistic way to generate a diagnosis than the use of crisp and categorical relations 278 Vibration Analysis and Control – New Trends and Developments ... particularities and benefits (Cusido et al., 2007a); the most interesting of them is to avoid accessing inside the motor making it easy to perform 266 Vibration Analysis and Control – New Trends and Developments...

Ngày tải lên: 19/06/2014, 19:20

... Festigkeit” (On Elasticity and Fixity), Dominicus, Prague 308 Vibration Analysis and Control – New Trends and Developments Zhou, S.; Shi, J (2001) Active Balancing and Vibration Control of Rotating ... of the steel deck selected joints before and after the introduction of the proposed bracing system 304 Vibration Analysis and Control – New Trends and Developments Rotor Support (Node: Rotor Support ... machinery could be affected by human discomfort 306 Vibration Analysis and Control – New Trends and Developments On the other hand, considering the machinery performance, it was also concluded that...

Ngày tải lên: 19/06/2014, 19:20

... (right and left sides of the parotid glands and right and left sides of the submandibular and sublingual glands), during vibrotactile stimulation of the bilateral parotid and submandibular glands ... Analysis and Control – New Trends and Developments the parotid glands among 89, 114, and 180 Hz with a single motor, and then we found the most effective frequency for salivation of the submandibular ... 318 Vibration Analysis and Control – New Trends and Developments Vibration Control 10 variables z1 and z6 , and two pole location plots (overview and zoomed) for the open- and the closed-loop results...

Ngày tải lên: 19/06/2014, 19:20

... Region=Europe and Gender =Female and Cd =Classic -> Three Region=Europe and Gender=Female and Cd=Sporty -> Three Region=Asia and Gender=Female and Cd=Classic -> Four Region =Europe and Age =18-24 and Cd ... truck drivers and 261 car drivers from Europe and Asia (China, Finland, France, Germany, Greece, India, Italy, New Trends and Developments in Automotive Industry Malaysia, Netherlands, Singapore, ... Region =Asia and Gender = Male and Cd =Cool -> Three Region=Asia and Age =18-24 Cd =Classic -> Four Region =Asia and Gender=Male and Cd= Modern -> Multiple Region=Asia and Age =18-24 and Cd =Sporty->...

Ngày tải lên: 20/06/2014, 07:20

... resistance and L its inductance Subscripts f and a refers to field and armature windings respectively Finally, E is the electromotive force and it is proportional to the field current and motor ... band After all this calculation, four parameters for each sensor and for each segment are obtained: normalized and noise-free data of RMS values for the two frequency bands, global weld RMS and ... optical axis of the cameras and the rotation about this axis can only be measured approximately In this case a different approach can be used; see figure 18 30 New Trends and Developments in Automotive...

Ngày tải lên: 20/06/2014, 07:20