it is very important to study and simulate s-wave structure for near surface (alluvium parts, in particular) owing to its direct relationship to urban facilities in geotechnical and earthquake engineering studies. so, in seismic microzonation, the first step is to study and identify s-wave pattern in alluvium in order to categorize different parts of cites according to s-wave velocity. current ...

Abstract Small angle scattering techniques have now been routinely used to quantitatively determine the potential of mean force in colloidal suspensions. However numerical accuracy data interpretation is often compounded by approximations adopted liquid state analytical theories. To circumvent this long standing issue, here we outline a machine learning strategy for determining effective intera...

Tidal open boundary conditions (OBCs) of the M2 tidal constituent in Bohai and Yellow Seas (BYS) are estimated via assimilation multi-satellite altimeter data to optimize regional numerical simulation. A two-dimensional adjoint model is used for simulation and, as an improvement, trigonometric polynomials fitting (TPF) applied inversion OBCs. It assumed that linearized amplitudes/phases spatial...

a systematic way is presented for the construction of multi-step iterative method with frozen jacobian. the inclusion of an auxiliary function is discussed. the presented analysis shows that how to incorporate auxiliary function in a way that we can keep the order of convergence and computational cost of newton multi-step method. the auxiliary function provides us the way to overcome the singul...

Seismic waveform inversion aims at obtaining detailed estimates of subsurface medium parameters, such as the spatial distribution of soundspeed, from multi-experiment seismic data. A formulation of this inverse problem in the frequency-domain leads to an optimization problem constrained by a Helmholtz equation with many right-hand-sides. Application of this technique to industry-scale problem f...

This paper presents an identity-based hierarchical designated decryption (IHDD) scheme which allows a message sender to generate ciphertexts that can be decrypted by (1) only a specified recipient or (2) a specified recipient and all or some of its ancestor users in the hierarchy tree. The newly proposed scheme can be considered as a combination of the hierarchical identity-based encryption (HI...

An experimental study of the phase inversion behavior of liquid-liquid dispersion has been conducted in a spray extraction column for systems of toluene / water, n-hexane/water, CCl4/water, toluene /water + glycerol (25 % wt), toluene + CCl4 (25 % wt) / water and toluene / acetic acid (5 % wt)/water. The effects of physical properties, mass transfer and column geometry...

Seismic inversion is a method that extracts acoustic impedance data from the seismic traces. Source wavelets are band-limited, and thus seismic traces do not contain low and high frequency information. Therefore, there is a serious problem when the deterministic seismic inversion is applied to real data and the result of deterministic inversion is smooth. Low frequency component is obtained fro...