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Related Concept Videos

Cross-Sectional Research01:50

Cross-Sectional Research

In cross-sectional research, a researcher compares multiple segments of the population at the same time. If they were interested in people's dietary habits, the researcher might directly compare different groups of people by age. Instead of following a group of people for 20 years to see how their dietary habits changed from decade to decade, the researcher would study a group of 20-year-old individuals and compare them to a group of 30-year-old individuals and a group of 40-year-old...
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Longitudinal Research

Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
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Archival Research

Some researchers gain access to large amounts of data without interacting with a single research participant. Instead, they use existing records to answer various research questions. This type of research approach is known as archival research. Archival research relies on looking at past records or data sets to look for interesting patterns or relationships. For example, a researcher might access the academic records of all individuals who enrolled in college within the past ten years and...
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The z-transform is a powerful mathematical tool used in the analysis of discrete-time signals and systems. It is a crucial tool in the analysis of discrete-time systems, but its convergence is limited to specific values of the complex variable z. This range of values, known as the Region of Convergence (ROC), is fundamental in determining the behavior and stability of a system or signal. The ROC defines the region in the complex plane where the z-transform converges, which can take various...
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Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.The structures that arise from convergent evolution are called analogous structures. They are similar in function even if they are dissimilar in structure. Further, structures can be analogous while also...
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Related Experiment Video

Updated: Jun 4, 2026

Comparing Bibliometric Analysis Using PubMed, Scopus, and Web of Science Databases
05:02

Comparing Bibliometric Analysis Using PubMed, Scopus, and Web of Science Databases

Published on: October 24, 2019

Searching for converging research using field to field citations.

Reindert K Buter1, Ed C M Noyons, Anthony F J Van Raan

  • 1Centre for Science and Technology Studies (CWTS), Leiden University, Wassenaarseweg 62a, P.O. Box 905, 2300 AX Leiden, The Netherlands.

Scientometrics
|February 8, 2011
PubMed
Summary

This study introduces a method to identify emerging interdisciplinary research by analyzing journal subject categories and citations. The research found 38 potential converging research areas, with 27 showing thematic focus.

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Area of Science:

  • Bibliometrics
  • Information Science
  • Research Policy

Background:

  • Defining and identifying interdisciplinary research is crucial for understanding scientific progress.
  • Traditional methods may not effectively capture the emergence of novel research areas.
  • Converging research signifies new interdisciplinary connections between previously disparate fields.

Purpose of the Study:

  • To develop and apply a systematic process for detecting converging research.
  • To utilize journal subject categories and citation analysis as proxies for scientific fields and their connections.
  • To identify emerging interdisciplinary research areas from a large publication dataset.

Main Methods:

  • A two-phase search strategy was employed: quantitative and qualitative.
  • Quantitative phase: Identified pairs of citing and cited journal subject categories with significant changes in citation counts.
  • Qualitative phase: Analyzed publication content to confirm thematic focus within identified pairs.

Main Results:

  • The search was applied to publications from the Web of Science (1995-2005).
  • Identified 38 candidate converging research pairs.
  • Of these, 27 pairs demonstrated thematic focus, and 20 showed reciprocal thematic focus.

Conclusions:

  • The developed method effectively identifies potential converging research areas.
  • The findings highlight the emergence of new interdisciplinary fields within the studied period.
  • This approach provides a valuable tool for research policy and understanding scientific evolution.