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Related Concept Videos

Compass01:23

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The compass is a fundamental instrument that operates by aligning its magnetic needle with Earth's magnetic field. This alignment facilitates navigation and orientation, offering a means to determine direction relative to magnetic north. However, the magnetic needle points to magnetic north, which differs slightly from true geographic north due to magnetic declination, which is the angular deviation between these two points. Declination varies based on geographic location and shifts over time...
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Design Example: Marking Boundaries of a Site Using a Compass01:12

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Marking site boundaries using a compass is a precise surveying technique that ensures the accuracy of boundary delineation. The process begins by using provided site details, including the bearings and lengths of each boundary line. The initial step involves calculating latitudes and departures for all sides of the site. This computation verifies that the traverse is free of errors, ensuring a closed and accurate boundary.The process starts at a known point, such as Point A, which is often...
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Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types.  Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
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Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
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Related Experiment Video

Updated: Jan 31, 2026

Rose Bengal Photothrombosis by Confocal Optical Imaging In Vivo: A Model of Single Vessel Stroke
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Complexity in financial asset returns: Evidence from the compass rose.

Jonathan A Batten1, Brian M Lucey2, Maurice Peat3

  • 1School of Economics, Finance and Banking, Universiti Utara Malaysia, 06010 UUM Sintok, Kedah Darul Aman, Malaysia.

Chaos (Woodbury, N.Y.)
|January 3, 2019
PubMed
Summary

Financial data

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Area of Science:

  • Quantitative Finance
  • Financial Market Analysis
  • Time Series Analysis

Background:

  • The compass rose pattern in financial data has been suggested as an indicator of nonlinear or chaotic data generating processes.
  • Understanding the influence of noise on financial time series is crucial for accurate market analysis.
  • Previous research has explored potential links between this pattern and underlying market dynamics.

Purpose of the Study:

  • To investigate the temporal dynamics of the compass rose pattern in financial time series.
  • To determine the relationship between the compass rose pattern, noise, and nonlinearity in financial markets.
  • To assess whether the compass rose pattern is a reliable indicator of nonlinear structures.

Main Methods:

  • Analysis of denoised returns for gold, the Great British Pound/US dollar exchange rate, and the S&P 500 index from 1996 to 2015.
  • Examination of the compass rose pattern across four equivalent subperiods.
  • Assessment of nonlinearity in financial time series data.

Main Results:

  • The compass rose pattern was observed to change over the analyzed subperiods (1996-2015).
  • Evidence of nonlinearity was present in all time periods, irrespective of the compass rose pattern's visibility.
  • The study found that noise appears to mask the true underlying dynamics of asset returns.

Conclusions:

  • The compass rose pattern is unlikely to solely result from an underlying nonlinear structure.
  • The presence of noise in financial time series can obscure the actual market dynamics.
  • Noise significantly impacts the manifestation and interpretation of patterns like the compass rose in financial data.