نتایج جستجو برای: amplitude variation with offset avo

تعداد نتایج: 9323053  

1995
Sergey Fomel

This paper concerns amplitude-preserving kinematically equivalent offset continuation (OC) operators. I introduce a revised partial differential OC equation as a tool to build OC operators that preserve offset-dependent reflectivity in prestack processing. The method of characteristics is applied to reveal the geometric laws of the OC process. With the help of geometric (kinematic) construction...

2010
Herbert Jaeger

A method is presented for immunizing an Echo State Network against slow, task-irrelevant variation in its input. The main idea is to extract some principal components of the smoothed reservoir dynamics, and augment the reservoir with a feedback controller which attempts to pull these components to zero. This leads to a “homeostatic” self-stabilization of the reservoir dynamics. A proof-of-princ...

Journal: :auditory and vestibular research 0
sirvan najafi department of audiology, school of rehabilitation sciences, iran university of medical sciences, tehran, iran masoumeh rouzbahani department of audiology, school of rehabilitation sciences, iran university of medical sciences, tehran, iran fatemeh heidari department of audiology, school of rehabilitation, shahid beheshti university of medical sciences, tehran, iran agha fatemeh hosseini department of biostatistics, school of public health, iran university of medical sciences, tehran, iran

background and aim: auditory p300 is an event-related potential. cognitive factors like attention are involved in the generation of p300. it seems that normative variation of p300 is necessary for clinical purposes. thus, the current study was designed to establish preliminary normative variation of p300 amplitude and latency at fz and cz sites in adults. methods: this cross-sectional study was...

2003
Paul F. Anderson

INTRODUCTION The use of hodograms in interpretation of AVO cross-plots is a relatively recent innovation (Keho, 2000). Often, when comparing models of attributes to the actual seismic attributes, we find that anomalous zones are much closer to the background trend than the model indicates. One reason for this concerns wavelet effects. The AVO hodogram takes wavelet effects into account and can ...

Journal: :Clinical EEG and neuroscience 2013
Pradeep D Prasad S Vishaka Datta Kaushik Majumdar

Recent studies involving individual neurons in the seizure focal and surrounding areas have established heterogeneous firing patterns in single cells. However, the patterns become more homogeneous approaching the seizure offset. In this article, we show that similar observations are possible from intracranial recording if the right quantitative or engineering techniques are used. We have observ...

ژورنال: پژوهش نفت 2015

استفاده از روش‌های کمی در تفسیر داده‌های لرزه‌ای به جای روش‌های کیفی در مراحل اکتشاف تا تولید از مخازن نفتی، به مرور زمان جای خود را در صنعت بالا دستی نفت پیدا کرده است. یکی از مهمترین روش‌های کمی، بررسی نحوه تغییر ضرایب بازتاب امواج لرزه‌ای بر حسب تغییر دورافت (AVO) بین گیرنده و چشمه است. با استفاده از ارتباط دامنه در برابر دورافت، روابط زوپریتس و تقریب‌های آن می‌توان نشانگرهای مختلفی استخراج ...

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