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Fluctuations and Noise
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Cool Jobs: Data detectives - Science News for Students

Cool Jobs: Data detectives - Science News for Students | FaN | Scoop.it
Science News for Students
Cool Jobs: Data detectives
Science News for Students
Statisticians diagnose patterns that may appear to be there but are probably due to what is called “noise” — unwanted and random variations in data.
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Research Paper: “The Google Scholar Experiment: How to Index ...

Research Paper: “The Google Scholar Experiment: How to Index ... | FaN | Scoop.it
The following research paper has been accepted for publication in the Journal of the American Society for Information Science and Technology. Title. The Google Scholar Experiment: How to Index False Papers and ...
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Information Measure for Long-Range Correlated Sequences: the Case of the 24 Human Chromosomes

Information Measure for Long-Range Correlated Sequences: the Case of the 24 Human Chromosomes | FaN | Scoop.it

A new approach to estimate the Shannon entropy of a long-range correlated sequence is proposed. The entropy is written as the sum of two terms corresponding respectively to power-law (ordered) and exponentially (disordered) distributed blocks (clusters). The approach is illustrated on the 24 human chromosome sequences by taking the nucleotide composition as the relevant information to be encoded/decoded. Interestingly, the nucleotide composition of the ordered clusters is found, on the average, comparable to the one of the whole analyzed sequence, while that of the disordered clusters fluctuates. From the information theory standpoint, this means that the power-law correlated clusters carry the same information of the whole analysed sequence. Furthermore, the fluctuations of the nucleotide composition of the disordered clusters are linked to relevant biological properties, such as segmental duplications and gene density.

 

Information Measure for Long-Range Correlated Sequences: the Case of the 24 Human Chromosomes
A. Carbone
Scientific Reports 3, Article number: 2721 http://dx.doi.org/10.1038/srep02721

 


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Uncertain price determinants of gold illustrated by recent fluctuations - CountingPips (blog)

Uncertain price determinants of gold illustrated by recent fluctuations - CountingPips (blog) | FaN | Scoop.it
Uncertain price determinants of gold illustrated by recent fluctuations
CountingPips (blog)
The fluctuations that gold has experienced over the last few years illustrate the uncertainty surrounding how the metal is priced.
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Transforming 'noise' into mechanical energy at nanometric level | Science Daily

Transforming 'noise' into mechanical energy at nanometric level | Science Daily | FaN | Scoop.it

A team of researchers at the Freie Universität Berlin, co-ordinated by José Ignacio Pascual*, have developed a method that enables efficiently using the random movement of a molecule in order to make a macroscopic-scale lever oscillate.

 

The research was published in Science.

 

In nature, processes such as the movement of fluids, the intensity of electromagnetic signals, chemical compositions, etc., are subject to random fluctuations which normally are called 'noise'. This noise is a source of energy and its utilisation for undertaking a task is a paradigm that nature has shown to be possible in certain cases.

 

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Via Chuck Sherwood, Senior Associate, TeleDimensions, Inc
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The GREEN MARKET ORACLE: Temperature Fluctuations and Cold ...

The GREEN MARKET ORACLE: Temperature Fluctuations and Cold ... | FaN | Scoop.it
Everyone who follows climate science knows that the planet is warming, but many are unaware of how temperature fluctuations may also be a part of the climate change picture. Scientific observations provide an ...
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Oil and gas market fluctuations

Oil and gas market fluctuations | FaN | Scoop.it
By Christopher Meloni Due to the oil market, the world is still going. The demand of petroleum will never end as long as industries exist. Apart from industrial use, it works as a lubricant and is a

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Scientists discover noise pollution effects on shellfish - Phys.org

Scientists discover noise pollution effects on shellfish - Phys.org | FaN | Scoop.it
(Phys.org) —Man-made noise in the oceans may have significant damaging effects on shellfish populations, according to a new international study published today.
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Joys of Noise

Joys of Noise | FaN | Scoop.it

In engineering, uncertainty is usually as welcome as sand in a salad. The development of digital technologies, from the alphabet to the DVD, has been driven in large part by the desire to eliminate random fluctuations, or noise, inherent in analog systems like speech or VHS tapes. But randomness also has a special ability to make some systems work better. Here are five cases where a little chaos is a critical part of the plan (...)

 

http://nautil.us/issue/2/uncertainty/joys-of-noise


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