نتایج جستجو برای: linear moment

تعداد نتایج: 537868  

2000
José L. Vilar

Linear goal programming can be used as a complementary technique when local moment matching method up to the second moment gives some negative mass. This could happen when manipulating a discrete or mixed type severity distribution. In that case we can avoid a simple retreat to the first moment and look for an arithmetic distribution with equal mean and the second moment closest to that of the ...

Journal: :فیزیک زمین و فضا 0
محمدرضا حاتمی مؤسسه ژئوفیزیک دانشگاه تهران، استادیار ظاهر حسین شمالی مؤسسه ژئوفیزیک دانشگاه تهران، استادیار غلام جوان دولویی پژوهشگاه بین المللی زلزله شناسی و مهندسی زلزله، استادیار

the source parameters and focal depth of the destructive mw 6.5, 31 march. 2006 iran- silakhor earthquake, the two largest foreshocks and a major aftershock are determined using broadband data from a seismic network in iran based on a time-domain linear moment tensor inversion. the earthquakes occurred in the zagros suture zone in western iran. waveform inversion of the selected events estimate...

Journal: :آب و خاک 0
شامکوئیان شامکوئیان قهرمان قهرمان داوری داوری سرمد سرمد

abstract natural disasters threatening and endangering human communities has resulted in the study and research of such disasters through the related sciences and present methods of forecasting their behavior with time and place and also from a qualification and quantity viewpoint. to this end, numerous methods for the determination of the maximum flood in various return period has been made av...

Journal: :civil engineering infrastructures journal 0
gholamreza abdollahzadeh associate professor, faculty of civil engineering, babol university of technology mohammad sazjini ph.d. student, faculty of civil engineering, babol university of technology azadossadate asghari ph.d. student, faculty of civil engineering, babol university of technology

fragility curves represent the probabilities that structural damages, under various levels of seismic excitation, will exceed the specified damage states by means of earthquake intensity damage relations. conceptual aspects related to seismic vulnerability, damage and risk evaluation are discussed first, together with a short review of the most widely used possibilities for the seismic evaluati...

Abdellah Lamnii Jaoud Dabounou Omar El Khayyari

By using the trigonometric uniform splines of order 3 with a real tension factor, a numericalmethod is developed for solving a linear second order boundary value problems (2VBP) withDirichlet, Neumann and Cauchy types boundary conditions. The moment at the knots isapproximated by central finite-difference method. The order of convergence of the methodand the theory is illustrated by solving tes...

2016
Khem Raj Ghusinga Cesar A. Vargas-Garcia Andrew Lamperski Abhyudai Singh

In the stochastic formulation of chemical kinetics, the stationary moments of the population count of species can be described via a set of linear equations. However, except for some specific cases such as systems with linear reaction propensities, the moment equations are underdetermined as a lower order moment might depend upon a higher order moment. Here, we propose a method to find lower, a...

2006
Naoto Kunitomo Michael McAleer Yoshihiko Nishiyama

Moment restriction-based econometric modelling is a broad class which includes the parametric, semiparametric and nonparametric approaches. Moments and conditional moments themselves are nonparametric quantities. If a model is specified in part up to some finite dimensional parameters, this will provide semiparametric estimates or tests. If we use the score to construct moment restrictions to e...

M. Manteghi, M. Tajdari, S.M. Shariatmadar,

Non-linear characteristic of tire forces is the main cause of vehicle lateral dynamics instability, while direct yaw moment control is an effective method to recover the vehicle stability. In this paper, an optimal linear quadratic regulator (LQR) controller for roll-yaw dynamics to articulated heavy vehicles is developed. For this purpose, the equations of motion obtained by the MATLAB sof...

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