Journal Quality Index

The "Journal Quality Index" (JQI) is proposed by the 5GH Foundation to evaluate the quality of academic journals based on the proportion of published articles that are problematic. Problematic articles include those with: (1) Inaccurate or manipulated data, figures, and/or images; (2) Manipulated editorial processes and/or peer review; (3) Other significant issues.

The JQI categorizes journals into five classes based on the percentage of problematic articles:

A Class Journal: The proportion of problematic articles is less than 1%, i.e., [0%, 1%).

B Class Journal: The proportion of problematic articles is between 1% and 3%, i.e., [1%, 3%).

C Class Journal: The proportion of problematic articles is between 3% and 5%, i.e., [3%, 5%).

D Class Journal: The proportion of problematic articles is between 5% and 10%, i.e., [5%, 10%).

E Class Journal: The proportion of problematic articles is 10% or higher, i.e., [10%, ∞).

The 5GH Team assigns the JQI to journals based on the "Journal Quality Report" (JQR), which is compiled by the team and other third parties. Articles evaluated in the JQR should be selected using an unbiased method. It is recommended to select one or more complete issues or volumes for evaluation. Any JQR from third parties will be reviewed by the 5GH Team, and the final JQR will be made publicly available after the review process.

The 5GH Team welcome any parties to submit their JQR on any journals to 5GH@5gh.org.cn








Author: WU Guangheng

Founder and Chair of the 5GH Foundation

E-Mail: wu@5gh.org.cn

Document ID: 5GH-WuGH-2025.000040

Publication Date: 2025.03.08

This article is licensed under a CC BY-NC-ND 4.0 International License

Journal Quality Report on "Construction and Building Materials"

Recently, the 5GH Team analyzed the all 56 articles published on Volume 469 of the journal "Construction and Building Materials", an Elsevier title, and found 12 of them (about 21.4%) have major issues, including reused spectra/images, problematic authorship, abnormal data patterns, as well as abnormal noise patterns of the published spectra. The high percentage of the problematic articles suggests that this journal does not maintain high quality editorial and peer review process. Based on these results, the 5GH Team assigns the Journal Quality Index for "Construction and Building Materials" to be E.


Journal Quality Report on "Ceramics International"

Recently, the 5GH Team analyzed the all 127 articles published on Volume 51 Issue 6 of the journal "Ceramics International", an Elsevier title, and found 14 of them (about 11%) have questionable data, spectra, and/or images, including reused spectra/images, as well as abnormal data/noise patterns. Although these cases were not all resulted from misconducts, the high percentage of the problematic articles suggests that this journal does not maintain high quality editorial and peer review process. Based on these results, the 5GH Team assigns the Journal Quality Index for "Ceramics International" to be E.