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Journal's Global Impact Factor Records
The journal's Global Impact Factor (GIF) is calculated according to the standard formula published by Clarivate Analytics (previously ISI). The following is an example for calculation of 2023.

A = 69 citations (number of times articles published in 2022 and 2021, cited in 2023).
B = 109 articles (total number of articles published in 2022 and 2021).
A/B = 0.633 (GIF for 2023).
H-Index = 16
i-Index
= 43

GIF for previous years were calculated using similar method and the value is announced in July of the relevant year. The journal was established in 2014.

NOTE: Raw data used in this calculation can be accessed from the journal’s citation records by Google Scholar for verifications by third parties.


- GIF for 2022
A = 62 citations
B = 112 articles
GIF for 2019 = 0.554
H-Index = 15
i-Index
= 36
GIF for 2021
A = 55 citations
B = 76 articles
GIF for 2021 = 0.724
H-Index = 13
i-Index
= 23
GIF for 2020
A = 43 citations
B = 81 articles
GIF for 2019 = 0.531
H-Index = 10
i-Index
= 15
GIF for 2019
A = 47 citations
B = 99 articles
GIF for 2018 = 0.475
H-Index = 7
i-Index
= 3
GIF for 2018
A = 64 citations
B = 141 articles
GIF for 2017 = 0.454
H-Index = 6
i-Index
= 1
GIF for 2017
A = 36 citations
B = 90 articles
GIF for 2017 = 0.400
H-Index = 4
i-Index
= 0
IF for 2016
A = 6 citations
B = 20 articles
GIF for 2016 = 0.300
H-Index = 2
i-Index
= 0
.

Important Announcement: Temporary Delay in June Issue Publication

We would like to inform our readers, authors, and reviewers that the journal is currently undergoing a system migration to a new server to better serve our community. As a result, the publication of the June Issue will be temporarily delayed.

We appreciate your patience and understanding during this transition period. Our team is working diligently to complete the migration and ensure all functions are fully restored as soon as possible.

Thank you for your continued support.

    From the Editorial Team

Publication - the journal is published 4 times a year for March, June, September and December issues.

Current Issue
    Vol 12, No 2, June 2025

Next Issue - Vol 12, No 3, September 2025

Most cited papers from the Transactions on Science and Technology

Article in press

Grazing by the mysid Neomysis mirabilis during the warm season in a coastal lagoon in northeastern Japan
Yoshizumi Nakagawa; Fumiko Hirasawa; Koji Asakuma. 2025. Transactions on Science and Technology- in press.
Abstract Mysids of the genus Neomysis are omnivorous, feeding on microalgae, zooplankton, and detritus, and are preyed upon by fish. Neomysis mirabilis is the most dominant mysid in the subarctic Notoro Lagoon, located on the coast of northeastern Hokkaido, Japan. The feeding habit of N. mirabilis was demonstrated as herbivorous during the icy season but has not yet been determined for the longer duration of the warm season. In this study, N. mirabilis were collected from the surface water of Notoro Lagoon in August to October 2023. To determine grazing by N. mirabilis on microalgae during the warm season we estimated the daily ration using gut pigment contents and the gut passage time in a gut evacuation experiment and then compared the data with the estimated carbon requirement. The average daily ration (carbon derived from the consumption of microalgae) ranged from 43.7 to 89.3 μg C ind.-1 day-1 from August to October. The percent composition of the daily ration of microalgae to the metabolic requirement of N. mirabilis ranged from 24.7% to 54.7%. These results reveal that the feeding habit of N. mirabilis can be omnivorous during the warm season.
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