نتایج جستجو برای: geochemical noises

تعداد نتایج: 18910  

Journal: :The Journal of the Acoustical Society of America 2016
Jitong Chen Yuxuan Wang Sarah E Yoho DeLiang Wang Eric W Healy

Supervised speech segregation has been recently shown to improve human speech intelligibility in noise, when trained and tested on similar noises. However, a major challenge involves the ability to generalize to entirely novel noises. Such generalization would enable hearing aid and cochlear implant users to improve speech intelligibility in unknown noisy environments. This challenge is address...

1997

Surface geological and geochemical mapping have been key technical contributors to many gold discoveries over the past 25 years. However, in the last ten years there has been a growing emphasis on using geophysical techniques to compliment them in covered terrains. As the search for gold deposits under covered areas expands, there will be increasing emphasis on integrating the geoscientific dis...

2008
S. C. Seetharam

A multi-component reactive transport model, coupled to an existing thermal, hydraulic and mechanical model is investigated. The model is based on conservation of mass/energy principles for the flow and stress strain equilibrium for the mechanical behaviour. The resultant model is coupled to a geochemical model in order to capture geochemical interactions. Numerically, the Galerkin finite elemen...

2012
P. Karthikeyan M. Murugappan

In recent years, Electrocardiogram (ECG) plays an imperative role in heart disease diagnostics, Human Computer Interface (HCI), stress and emotional states assessment, etc. In general, ECG signals affected by noises such as baseline wandering, power line interference, electromagnetic interference, and high frequency noises during data acquisition. In order to retain the ECG signal morphology, s...

Journal: :Intelligent Automation & Soft Computing 2012
HuiHui Yu Ronghua Ji Jingyuan Li Tiantian Wang

The color images of the actual field were collected and processed in the variable spray system based on machine vision. The variable spray decision was made according to the identified results. The variable spraying was realized by the sprayer for the variable spray decision. However, there were many noises in the field images because of the complexity of the field image acquisition condition. ...

2013
Longzhu Han Yunzhe Liu Dandan Zhang Yi Jin Yuejia Luo

The relationship between noise and human performance is a crucial topic in ergonomic research. However, the brain dynamics of the emotional arousal effects of background noises are still unclear. The current study employed meaningless speech noises in the n-back working memory task to explore the changes of event-related potentials (ERPs) elicited by the noises with low arousal level vs. high a...

Journal: :The Journal of the Acoustical Society of America 1999
B Rakerd W M Hartmann T L McCaskey

The ability of human listeners to identify broadband noises differing in spectral structure was studied for multiple sound-source locations in the median sagittal plane. The purpose of the study was to understand how sound identification is affected by spectral variations caused by directionally dependent head-related transfer functions. It was found that listeners could accurately identify noi...

Journal: :The Journal of the Acoustical Society of America 1991
W P Shofner

This paper describes the temporal responses of anteroventral cochlear nucleus (AVCN) units in the chinchilla to rippled noises. Rippled noise is generated when a wideband noise is delayed and added (cos+ noise) or subtracted (cos- noise) to the undelayed noise. Renewal densities were constructed to evaluate synchronous discharges at the delay. In response to rippled noise, AVCN units which show...

2014
Magali Sanches Duran Lucas Avanço Sandra M. Aluísio Thiago A. S. Pardo Maria das Graças Volpe Nunes

This paper describes the analysis of different kinds of noises in a corpus of products reviews in Brazilian Portuguese. Case folding, punctuation, spelling and the use of internet slang are the major kinds of noise we face. After noting the effect of these noises on the POS tagging task, we propose some procedures to minimize them.

Journal: :Applied Mathematics and Computation 2012
Bo Song Ju H. Park Zhengguang Wu Ya Zhang

In this paper, the problem of stochastic synchronization analysis is investigated for complex networks perturbed by the Poisson noise. By using the key tool such as the infinites-imal operator for stochastic differential equations driven by the Poisson process, this paper proposes a globally exponentially synchronization criterion in mean square for complex networks perturbed by the Poisson noi...

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