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

Quantifying and Rejecting Outliers: The Grubbs Test01:02

Quantifying and Rejecting Outliers: The Grubbs Test

1.5K
Sometimes, a data set can have a recorded numerical observation that greatly  deviates from the rest of the data. Assuming that the data is normally distributed, a statistical method called the Grubbs test can be used to determine whether the observation is truly an outlier.  To perform a two-tailed Grubbs test, first, calculate the absolute difference between the outlier and the mean. Then, calculate the ratio between this difference and the standard deviation of the sample. This...
1.5K
Wald-Wolfowitz Runs Test II01:17

Wald-Wolfowitz Runs Test II

213
The Wald-Wolfowitz runs test, commonly referred to as the runs test, is a nonparametric test used to assess the randomness of ordered data. The test evaluates the number of runs, which are consecutive sequences of similar elements within the data. If the number of runs is significantly higher or lower than expected, the data is considered non-random, indicating a detectable pattern or structure.
For binary data, runs are identified using symbols such as + and −, or equivalently, 1s and...
213
Manipulation and Analysis01:21

Manipulation and Analysis

23
GIS manipulation and analysis functions are vital for decision-making and planning. These activities range from data retrieval tasks, such as selecting information based on specific criteria, to advanced analytical techniques that address complex spatial problems.One critical GIS analysis method is overlaying, which combines multiple data layers to examine impacts. For example, overlaying a river-dammed lake boundary with road networks can identify affected infrastructure. Another common...
23
Comparing the Survival Analysis of Two or More Groups01:20

Comparing the Survival Analysis of Two or More Groups

170
Survival analysis is a cornerstone of medical research, used to evaluate the time until an event of interest occurs, such as death, disease recurrence, or recovery. Unlike standard statistical methods, survival analysis is particularly adept at handling censored data—instances where the event has not occurred for some participants by the end of the study or remains unobserved. To address these unique challenges, specialized techniques like the Kaplan-Meier estimator, log-rank test, and...
170
Statistical Methods for Analyzing Epidemiological Data01:25

Statistical Methods for Analyzing Epidemiological Data

344
Epidemiological data primarily involves information on specific populations' occurrence, distribution, and determinants of health and diseases. This data is crucial for understanding disease patterns and impacts, aiding public health decision-making and disease prevention strategies. The analysis of epidemiological data employs various statistical methods to interpret health-related data effectively. Here are some commonly used methods:
344
Steps in Outbreak Investigation01:18

Steps in Outbreak Investigation

119
In the ever-evolving field of public health, statistical analysis serves as a cornerstone for understanding and managing disease outbreaks. By leveraging various statistical tools, health professionals can predict potential outbreaks, analyze ongoing situations, and devise effective responses to mitigate impact. For that to happen, there are a few possible stages of the analysis:
119

You might also read

Related Articles

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

Sort by
Same author

Disruption of BnPHT5;1b gene enhances arsenate tolerance through increased arsenate retention in shoot cell walls of Brassica napus.

Journal of hazardous materials·2026
Same author

GhNAC47 activates GhSKS6-mediated cell wall remodeling to promote cotton chemical defoliation.

The New phytologist·2026
Same author

Enhanced gastrointestinal stability and therapeutic efficacy of biofilm self-coated Bacillus amyloliquefaciens C-1 probiotic in ulcerative colitis.

NPJ science of food·2026
Same author

Linking oxidative stress defense to biofilm architecture: Ohr mediates strain-dependent persistence in <i>Acinetobacter baumannii</i>.

Virulence·2026
Same author

Self-Evolving Hydrogel Dressing Temporally Accelerates Infected Diabetic Wound Healing.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Associations of comprehensive oral health with body composition, physical performance, and sarcopenia among middle-aged and older adults in rural western China: potential mediating pathways.

BMC oral health·2026

Related Experiment Video

Updated: Jun 19, 2025

Quantitative Detection of Trace Explosive Vapors by Programmed Temperature Desorption Gas Chromatography-Electron Capture Detector
07:57

Quantitative Detection of Trace Explosive Vapors by Programmed Temperature Desorption Gas Chromatography-Electron Capture Detector

Published on: July 25, 2014

19.9K

The statistical analysis based on GTD terrorist incident record data.

Yunhuan Qu1, Yatian Chen2, Zhaowen Tan1

  • 1School of Economics and Management, Xi'an Kedagaoxin University, Xi'an, 710100, China.

Heliyon
|July 26, 2024
PubMed
Summary

Terrorist attacks globally cause significant harm, with the 9/11 incident being the most severe. The Middle East remains a focal point for ongoing international terrorism threats.

Keywords:
Factor analysisGISGTDTerrorist attacks

More Related Videos

Measurement & Analysis of the Temporal Discrimination Threshold Applied to Cervical Dystonia
10:05

Measurement & Analysis of the Temporal Discrimination Threshold Applied to Cervical Dystonia

Published on: January 27, 2018

9.7K
Standardized Method for Measuring Collection Efficiency from Wipe-sampling of Trace Explosives
07:22

Standardized Method for Measuring Collection Efficiency from Wipe-sampling of Trace Explosives

Published on: April 10, 2017

9.5K

Related Experiment Videos

Last Updated: Jun 19, 2025

Quantitative Detection of Trace Explosive Vapors by Programmed Temperature Desorption Gas Chromatography-Electron Capture Detector
07:57

Quantitative Detection of Trace Explosive Vapors by Programmed Temperature Desorption Gas Chromatography-Electron Capture Detector

Published on: July 25, 2014

19.9K
Measurement & Analysis of the Temporal Discrimination Threshold Applied to Cervical Dystonia
10:05

Measurement & Analysis of the Temporal Discrimination Threshold Applied to Cervical Dystonia

Published on: January 27, 2018

9.7K
Standardized Method for Measuring Collection Efficiency from Wipe-sampling of Trace Explosives
07:22

Standardized Method for Measuring Collection Efficiency from Wipe-sampling of Trace Explosives

Published on: April 10, 2017

9.5K

Area of Science:

  • Criminology
  • Political Science
  • International Relations

Background:

  • Terrorism poses a global threat, affecting 92% of countries since 1970.
  • Over 200,000 terrorist incidents have occurred, causing widespread casualties and property damage.
  • International terrorism remains a significant concern, with concentrated activity in the Middle East.

Purpose of the Study:

  • To develop a comprehensive evaluation system for terrorist attack harm.
  • To analyze the trends and spatial distribution of global terrorist attacks.
  • To predict future patterns of international terrorism.

Main Methods:

  • Utilized the Global Terrorism Database (GTD) from 1998-2017.
  • Employed factor analysis to create a harm evaluation index system.
  • Applied Geographic Information Systems (GIS) for quantitative spatial analysis and time series modeling for prediction.

Main Results:

  • The 9/11 attacks were identified as the most harmful incident, followed by the Salam Embassy bombing.
  • The evaluation model accurately reflects the harm of terrorist attacks over the past two decades.
  • Terrorist attacks are shifting geographically, with increasing concentration in the Middle East.

Conclusions:

  • International terrorism is projected to remain at high levels.
  • The Middle East and Arabian Peninsula are expected to continue as primary centers for terrorist activity.
  • The study provides an objective assessment of terrorist attack harm and spatial-temporal dynamics.