The correlation of ambient vibrations of the Earth yields the impulse response between two passive sensors as if one was a source. This provides the opportunity to image the Earth beneath regional seismic arrays. In this paper, we present imaging of the lithosphere in Europe based on surface Rayleigh waves extracted from continuous record of the seismic noise. We also recall a brief history of ...

Abstract Seismic noise poses challenges for gravitational wave detection. Effective vibration isolation and methods to subtract unshieldable Newtonian (NN) are examples. arrays offer one way deal with these issues by making use of correlations between seismic ground measurements inside the detector. In this paper we find that wind induced is incoherent our results show it can dramatically reduc...

Reservoir modeling is the process of generating numerical representations of reservoir conditions and properties on the basis of geological, geophysical, and engineering data measured on the Earth’s surface or in depth at a limited number of borehole locations. Therefore, reservoir modeling requires an incorporation of the data from a variety of sources, along with an integration of knowledge a...

natural signals are continues, therefore, digitizing is an essential task enabling us to use computing tools to process them. according to the nyquist/shannon sampling theory, the sampling frequency must be at least twice the maximum frequency contained in the signal which is being sampled; otherwise, some high frequencies may be aliased and result in a bad reconstruction. the nyquist sampling ...

Interpreters are widely used in domain-specific, dynamic, and scripting languages. While their implementation is relatively simple, their performance is poor. In this thesis we improve the performance of interpreters using dynamic optimization techniques. This task is challenging because the information regarding the interpreted program is not known until the interpreter is run. Efficient imple...

In the interpreting profession, term language direction (or directionality) is used to describe from one’s native, dominant (L1) into a second, non-dominant (L2), or vice versa. Language has long been of interest scholars in regards quality output. Spoken interpreter educators have argued that high interpretations can only be produced when working an L2 L1 (Nicodemus & Emmorey, 2013; Selesk...

We introduce a digital wavelet-like transform, which is tailored specifically for representing seismic data. The transform provides a multiscale orthogonal basis with basis functions aligned along seismic events in the input data. It is defined with the help of the wavelet lifting scheme combined with local planewave destruction. In the 1-D case, the seislet transform is designed to follow loca...

this paper aims at considering formal documents of iranian philosophy of education in independent and comparative manners. the comparative review method was used to achieve this aim. finding of this research demonstrate that, these three documents are different in seven criteria. these seven criteria are: 1) philosophical coherency; 2) proportion with educational practices; 3) relating to islam...