AMA, Agricultural Mechanization in Asia, Africa and Latin America
AMA, Agricultural Mechanization in Asia, Africa and Latin America (AMA) (issn: 00845841) is a peer reviewed journal first published online after indexing scopus in 1982. AMA is published by Farm Machinery Industrial Research Corp and Shin-Norinsha Co. AMA publishes every subjects of general engineering and agricultural engineering.
WOS Indexed (2026)
30 Jun 2026 (Vol - 57 , Issue- 07 )
31 Jul 2026 (Vol - 57 , Issue 07 )
Aim and Scope :
AMA, Agricultural Mechanization in Asia, Africa and Latin America
AMA, Agricultural Mechanization in Asia, Africa and Latin America (ISSN: 00845841) is a peer-reviewed journal. The journal covers Agricultural and Biological Sciences and all sort of engineering topic. the journal's scopes are in the following fields but not limited to:
Agricultural and Biological Sciences
Electrical Engineering and Telecommunication
Electronic Engineering
Computer Science & Engineering
Civil and architectural engineering
Mechanical and Materials Engineering
Transportation Engineering
Industrial Engineering
Industrial and Commercial Design
Information Engineering
Chemical Engineering
Food Engineering
Mathematical Model for Calculating Humus Balance and Doses of Organic Fertilizers Using Big Data
The article presents mathematical models to forecast the humus balance of agricultural lands in the Central region of Russia, developed by scientists of Federal State Budgetary Scientific Institution FSAC VIM on the basis of an array of big data of field experiments of the Geographic Network of Federal State Budgetary Scientific Institution "All- Russian Research Institute of Agrochemistry". On the basis of the presented mathematical models, a software package has been formed, the use of which makes it possible to predict the dynamics of humus in the system of crop rotations, doses and total demand for organic fertilizers necessary to maintain a positive balance of soil organic matter with a known specific weight of perennial grasses, to produce a rational formation of the structure of sown areas, crop rotations and agricultural technologies aimed at preserving and increasing soil fertility and its biological activity.
Kiwifruit detection and counting on orchard video using YOLOv3-tiny and Kalman filter for yield estimation
Fruit yield estimation is an important task in modern orchard management. Producers can allocate labors, optimize resources, and increase harvest efficiency by accurately estimating fruit yields. In this paper, a video counting algorithm for kiwifruit was proposed based on YOLOv3-tiny and Kalman filter. Results showed that P, R and AP values of the YOLOv3-tiny reached 0.8258, 0.8353 and 0.8666, respectively, while average detection speed reached 31 ms per image. The tested average counting error between the video counting algorithm and manual counting is 7.2 fruits per video. The experimental results demonstrated that the video counting algorithm can be recommended for fruit counting in kiwifruit orchard.
Time Optimization for Internal Grinding C45 Carbon Steel
In this article, the results of an optimization study when internal grinding C45 carbon steel were introduced. In the problem, the objective function which was chosen is the minimum machining time. Besides, six main process parameters including the initial grinding wheel diameter, the grinding wheel width, the wheel life, the total depth of dressing cut, the radial grinding wheel wear per dress, and the tolerance grade were selected for the problem. The influence of these parameters on the optimal replaced wheel diameter was analyzed by designing and performing a simulation experiment. In addition, a regression formula to calculate the optimal replaced wheel diameter was found. It was reported that this formula is in good agreement with the experimental data.
Determining Optimum Replaced Wheel Diameter when Internal Grinding Tool Steel for Time Function
This paper presents the results of an optimization study to determine the optimal replaced wheel diameter when internal grinding tool steel. In this study, the minimum grinding time was chosen as the objective function. In addition, six main input parameters of the grinding process were selected for the investigation. The influence of these parameters on the optimal replaced diameter was analyzed. Moreover, a regression formula to calculate the optimal replaced wheel diameter has been proposed. It is convenient to use this formula because the formula is given as an explicit function.
No mass synchronous spawning of reef corals in Nha Trang bay, Vietnam (the western South China Sea)?
Nha Trang bay is located in the south-central waters of Vietnam and considered as part of the most diverse region within the western South China Sea. According to oceanographic studies, this coastal area is not influenced by cold water mass from the north in winter but subjected to summer upwelling. Specimens for the study on coral spawning of four species were collected at Hon Mieu Island (12°11'37.31"N and 109°14'1.82"E) and 2 nearby sites during 2016 – 2019. Mature eggs of branching Acropora florida and A. robusta were observed inside coral colonies in the time before to after the full moon of late March to early April in 2018 and March in 2019. Meanwhile, the tabulate coral of A. hyacinthus spawned in the period after the full moon of March 2019. The total time of spawning periods of the three Acropora species is around 10 days. The spawning time of the massive coral of Dipsastraea palida was one month later than that of branching Acropora corals, during the time before and after the full moon of late April to early May in 2018 and April 2019 with the mature period around a half month. Observation on the ratio of mature (pigmented) eggs by time showed possible multispecific spawning of some Acropora corals. Further analysis on spawning periods of 3 Acropora species and one faviid species indicated that spawning of corals in Nha Trang bay could occur for a long time and at different periods from March to May but not concentrated in short period (1 to 3 days) in the same time as occurrences of mass synchronous spawning of corals in many areas in the Indo – Pacific.