نتایج جستجو برای: noise maps

تعداد نتایج: 297329  

Sound as a non-visual component of landscape, has a significant impact on individuals perception of space. Because unlike the landscape that seeing and looking is totally an optional action, soundscape regardless of people comes to be heard and understood. Lack of attention to quality of emitted sounds in the environment may leads to problems such as noise pollution, lack of concentration, nois...

Journal: :Journal Of Geophysical Research: Solid Earth 2022

Seismic ambient noise sources have received increased attention recently, creating new possibilities to study the Earth's subsurface and atmosphere-ocean-solid Earth coupling. In efforts locate such using nonlinear finite-frequency inversions, methodological developments as pre-computed wavefields spatially variable grids were necessary. These make inversions feasible for secondary microseismic...

2017
Ferran Orga Francesc Alías Rosa Ma Alsina-Pagès

Noise pollution is a critical factor affecting public health, the relationship between road traffic noise (RTN) and several diseases in urban areas being especially disturbing. The Environmental Noise Directive 2002/49/EC and the CNOSSOS-EU framework are the main instruments of the European Union to identify and combat noise pollution, requiring Member States to compose and publish noise maps a...

2010
H. T. Nguyen B. Schulz L. Levenson A. Amblard V. Arumugam H. Aussel T. Babbedge A. Blain J. Bock A. Boselli V. Buat I. G. Roseboom M. Rowan-Robinson Douglas Scott N. Seymour D. L. Shupe A. J. Smith J. A. Stevens M. Symeonidis

We report on the sensitivity of SPIRE photometers on the Herschel Space Observatory. Specifically, we measure the confusion noise from observations taken during the Science Demonstration Phase of the Herschel Multi-tiered Extragalactic Survey. Confusion noise is defined to be the spatial variation of the sky intensity in the limit of infinite integration time, and is found to be consistent amon...

2012
Dara Bahri Martin Uecker Michael Lustig

Target Audience: Engineers interested in speeding up high-channel-count parallel MRI reconstruction. Introduction: While receiver arrays with many channels can increase parallel imaging acceleration and provide high signal-to-noise, processing the large datasets they produce is computationally demanding. Coil compression algorithms reduce, and denoise in the process, data from many coils into f...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1375

in chapter one we will describe definitions and preliminary results to provide the global context of our own results to be presented in detail in the subsequent chapters in chapter two we consider degree-one maps of the circle and we study their rotation set. our main result in this chapter says that if the map is topologically mixing then its rotation interval is nontrivial (that is, not reduc...

Journal: :Neurocomputing 2006
Stefanie Jegelka James A. Bednar Risto Miikkulainen

How orientation and ocular-dominance maps develop before visual experience begins is controversial. Possible influences include molecular signals and spontaneous activity, but their contributions remain unclear. This paper presents LISSOM simulations suggesting that previsual spontaneous activity alone is sufficient for realistic OR and OD maps to develop. Individual maps develop robustly with ...

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