Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Correlation of Experimental Data01:23

Correlation of Experimental Data

491
Dimensional analysis simplifies complex physical problems and guides experimental investigations, but it does not provide complete solutions. It identifies the dimensionless groups that influence a phenomenon, but experimental data is needed to establish the specific relationships and validate theoretical predictions.
For example, a spherical particle moving through a viscous fluid experiences drag. Dimensional analysis shows that the drag force depends on the particle's diameter, velocity,...
491
Data: Types and Distribution01:19

Data: Types and Distribution

1.8K
In biostatistics, data are the observations collected for analysis. There are two main types: parametric and non-parametric. Parametric data, which include continuous (e.g., weight) and discrete numerical data (e.g., number of tablets), assume a particular distribution pattern, often the normal distribution. Non-parametric data do not adhere to a specific distribution and typically comprise nominal (e.g., gender) and ordinal categorical data (e.g., pain scale ratings).
Distributions in...
1.8K
Correlations02:20

Correlations

36.4K
Correlation means that there is a relationship between two or more variables (such as ice cream consumption and crime), but this relationship does not necessarily imply cause and effect. When two variables are correlated, it simply means that as one variable changes, so does the other. We can measure correlation by calculating a statistic known as a correlation coefficient. A correlation coefficient is a number from -1 to +1 that indicates the strength and direction of the relationship between...
36.4K
2D NMR: Homonuclear Correlation Spectroscopy (COSY)01:06

2D NMR: Homonuclear Correlation Spectroscopy (COSY)

2.0K
Homonuclear correlation spectroscopy, or COSY, is a 2-dimensional NMR technique that provides information about coupled protons. Typically, the geminal and vicinal coupling are observed. For example, consider the COSY spectrum of ethyl acetate, where its 1D proton NMR spectrum is plotted along the vertical and horizontal axes with their corresponding chemical shift scale. Three spots on the diagonal corresponding to the three peaks in the 1D proton spectrum are called diagonal peaks. The COSY...
2.0K
X-ray Crystallography02:18

X-ray Crystallography

26.2K
The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
26.2K
Correlation and Causation01:27

Correlation and Causation

42.8K
Statistical tests can calculate whether there is a relationship, or correlation, between independent and dependent variables. An indirect relationship of the variables signifies a correlation, while a direct relationship shows causation. If it is determined that no connection exists between the variables, then the correlation is a coincidence.
Correlation versus Causation
If the dependent variable increases or decreases when the independent variable increases, there is a positive or negative...
42.8K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Synergistic integration of Fe-MOF and biomass-derived activated carbon for enhanced ciprofloxacin adsorption: experimental insights and DFT-based mechanistic elucidation.

RSC advances·2026
Same author

Preventive efficacy of oxygen therapy against contrast-associated acute kidney injury in patients undergoing coronary angiography: a systematic review and meta-analysis of randomized controlled trials.

BMC nephrology·2026
Same author

The assessment and treatment of kratom dependence: findings from a physician survey in Malaysia.

The American journal of drug and alcohol abuse·2026
Same author

Radiological contamination in soils near the world's largest rare earth minerals producing region and their impacts on human health: A summary analysis.

Journal of environmental radioactivity·2026
Same author

Geological and Technical Foundations of Offshore CO<sub>2</sub> Storage in Depleted Reservoirs.

ACS omega·2026
Same author

Correction: Inhibition of the Nuclear Export Receptor XPO1 as a Therapeutic Target for Platinum-Resistant Ovarian Cancer.

Clinical cancer research : an official journal of the American Association for Cancer Research·2026

Related Experiment Video

Updated: Feb 8, 2026

Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering
07:55

Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering

Published on: April 17, 2018

13.3K

Distributed X-ray photon correlation spectroscopy data reduction using Hadoop MapReduce.

Faisal Khan1, Suresh Narayanan1, Roger Sersted2

  • 1X-ray Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439, USA.

Journal of Synchrotron Radiation
|July 7, 2018
PubMed
Summary

Multi-speckle X-ray photon correlation spectroscopy (XPCS) enables complex material analysis. A new Hadoop MapReduce system processes large XPCS datasets efficiently for near real-time results.

Keywords:
Advanced Photon SourceMapReduceXPCSmulti-speckle X-ray photon correlation spectroscopyparallel implementation

More Related Videos

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
08:30

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

14.9K
Quantifying X-Ray Fluorescence Data Using MAPS
14:58

Quantifying X-Ray Fluorescence Data Using MAPS

Published on: February 17, 2018

11.3K

Related Experiment Videos

Last Updated: Feb 8, 2026

Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering
07:55

Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering

Published on: April 17, 2018

13.3K
X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
08:30

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

14.9K
Quantifying X-Ray Fluorescence Data Using MAPS
14:58

Quantifying X-Ray Fluorescence Data Using MAPS

Published on: February 17, 2018

11.3K

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Data Science

Background:

  • Multi-speckle X-ray photon correlation spectroscopy (XPCS) is vital for studying material dynamics.
  • High-frame-rate detectors generate massive datasets, necessitating advanced processing.
  • Existing methods struggle with the scale and speed of data from modern XPCS experiments.

Purpose of the Study:

  • To develop and implement a scalable parallel computing solution for XPCS data analysis.
  • To enable near real-time processing of large XPCS datasets.
  • To enhance the capabilities of beamline 8-ID-I at the Advanced Photon Source.

Main Methods:

  • Implementation of multi-tau and two-time autocorrelation algorithms.
  • Utilizing the Hadoop MapReduce framework for distributed computing.
  • Application to data from beamline 8-ID-I at the Advanced Photon Source.

Main Results:

  • The developed system demonstrates excellent scalability with increasing data size.
  • Near real-time autocorrelation analysis is achieved for XPCS data.
  • The system has been operational and serving users for five years.

Conclusions:

  • The Hadoop MapReduce implementation provides an effective solution for processing large XPCS datasets.
  • This approach significantly improves the efficiency and accessibility of XPCS data analysis.
  • The system supports advanced research in complex material dynamics.