The Nigerian Journal of Technological Development (NJTD) is a quarterly publication of the Faculty of Engineering & Technology, is a quarterly publication of the Faculty of Engineering & Technology, University of Ilorin, Ilorin, Nigeria. It publishes original high-quality articles focusing on all aspects of Engineering and Applied Sciences. Manuscripts are double-blind peer-reviewed and if found suitable, are published as full length research articles or review papers. Our publications are scheduled for March, June, September and December.
The Journal covers research in the following subject areas:
• Agricultural and Biosystems Engineering
• Biomedical Engineering
• Chemical Engineering
• Civil Engineering
• Computer Engineering
• Electrical and Electronics Engineering
• Food and Bioprocessing Engineering
• Materials and Metallurgical Engineering
• Mechanical Engineering
• Water Resources and Environmental Engineering
• Petroleum Engineering
• Engineering Management
• Applied Sciences
• Geophysics
• Geology
• Applied Mathematics
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Quartiles
The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.
Category
Year
Quartile
Civil and Structural Engineering
2021
Q4
Civil and Structural Engineering
2022
Q4
Civil and Structural Engineering
2023
Q4
Civil and Structural Engineering
2024
Q4
Electrical and Electronic Engineering
2021
Q4
Electrical and Electronic Engineering
2022
Q4
Electrical and Electronic Engineering
2023
Q4
Electrical and Electronic Engineering
2024
Q4
Engineering (miscellaneous)
2021
Q4
Engineering (miscellaneous)
2022
Q4
Engineering (miscellaneous)
2023
Q4
Engineering (miscellaneous)
2024
Q4
Mechanical Engineering
2021
Q4
Mechanical Engineering
2022
Q4
Mechanical Engineering
2023
Q4
Mechanical Engineering
2024
Q4
SJR
The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from
It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.
Year
SJR
2021
0.117
2022
0.150
2023
0.155
2024
0.176
Total Documents
Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.
Year
Documents
2019
27
2020
39
2021
40
2022
44
2023
38
2024
48
Citations per document
This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.
Cites per document
Year
Value
Cites / Doc. (4 years)
2019
0.000
Cites / Doc. (4 years)
2020
0.556
Cites / Doc. (4 years)
2021
0.348
Cites / Doc. (4 years)
2022
0.594
Cites / Doc. (4 years)
2023
0.760
Cites / Doc. (4 years)
2024
0.894
Cites / Doc. (3 years)
2019
0.000
Cites / Doc. (3 years)
2020
0.556
Cites / Doc. (3 years)
2021
0.348
Cites / Doc. (3 years)
2022
0.594
Cites / Doc. (3 years)
2023
0.748
Cites / Doc. (3 years)
2024
0.893
Cites / Doc. (2 years)
2019
0.000
Cites / Doc. (2 years)
2020
0.556
Cites / Doc. (2 years)
2021
0.348
Cites / Doc. (2 years)
2022
0.519
Cites / Doc. (2 years)
2023
0.750
Cites / Doc. (2 years)
2024
1.000
Total Cites Self-Cites
Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.
Cites
Year
Value
Self Cites
2019
0
Self Cites
2020
1
Self Cites
2021
3
Self Cites
2022
8
Self Cites
2023
1
Self Cites
2024
2
Total Cites
2019
0
Total Cites
2020
15
Total Cites
2021
23
Total Cites
2022
63
Total Cites
2023
92
Total Cites
2024
109
External Cites per Doc Cites per Doc
Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years.
External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.
Cites
Year
Value
External Cites per document
2019
0
External Cites per document
2020
0.519
External Cites per document
2021
0.303
External Cites per document
2022
0.519
External Cites per document
2023
0.740
External Cites per document
2024
0.877
Cites per document
2019
0.000
Cites per document
2020
0.556
Cites per document
2021
0.348
Cites per document
2022
0.594
Cites per document
2023
0.748
Cites per document
2024
0.893
% International Collaboration
International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.
Year
International Collaboration
2019
11.11
2020
2.56
2021
12.50
2022
29.55
2023
34.21
2024
31.25
Citable documents Non-citable documents
Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.
Documents
Year
Value
Non-citable documents
2019
0
Non-citable documents
2020
0
Non-citable documents
2021
0
Non-citable documents
2022
0
Non-citable documents
2023
0
Non-citable documents
2024
0
Citable documents
2019
0
Citable documents
2020
27
Citable documents
2021
66
Citable documents
2022
106
Citable documents
2023
123
Citable documents
2024
122
Cited documents Uncited documents
Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.
Documents
Year
Value
Uncited documents
2019
0
Uncited documents
2020
18
Uncited documents
2021
47
Uncited documents
2022
66
Uncited documents
2023
70
Uncited documents
2024
59
Cited documents
2019
0
Cited documents
2020
9
Cited documents
2021
19
Cited documents
2022
40
Cited documents
2023
53
Cited documents
2024
63
% Female Authors
Evolution of the percentage of female authors.
Year
Female Percent
2019
6.82
2020
19.23
2021
18.18
2022
20.83
2023
15.31
2024
28.81
Documents cited by public policy (Overton)
Evolution of the number of documents cited by public policy documents according to Overton database.
Documents
Year
Value
Overton
2019
0
Overton
2020
0
Overton
2021
0
Overton
2022
1
Overton
2023
0
Overton
2024
0
Documents related to SDGs (UN)
Evolution of the number of documents related to Sustainable Development Goals defined by United Nations. Available from 2018 onwards.
Documents
Year
Value
SDG
2019
5
SDG
2020
12
SDG
2021
12
SDG
2022
12
SDG
2023
13
SDG
2024
21
Estimated APC
It estimates the article processing charges (APCs) a journal might charge, based on its visibility, prestige, and impact as measured by the SJR. It does not reflect the actual APC, but rather a calculated approximation based on journal quality.
Year
Est. APC (USD)
2019
2020
2021
2241
2022
2297
2023
2319
2024
2345
Estimated financial value
It represents the potential financial worth of a journal. It is obtained by multiplying the journal's Estimated APC by the total number of citable documents published over the past five years. This value reflects the hypothetical revenue a journal could generate based on its estimated publication costs and scholarly output.
Year
Est. value (USD)
2019
2020
2021
89655
2022
192911
2023
282896
2024
398651
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