Rakić, Aleksandar

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orcid::0000-0002-5695-989X
  • Rakić, Aleksandar (6)
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Author's Bibliography

Programming methodology for multi-axis CNC woodworking machining center for advanced manufacturing based on STEP-NC

Živanović, Saša; Dimić, Zoran; Rakić, Aleksandar; Slavković, Nikola; Kokotović, Branko; Manasijević, Srecko

(Taylor & Francis Ltd, Abingdon, 2022)

TY  - JOUR
AU  - Živanović, Saša
AU  - Dimić, Zoran
AU  - Rakić, Aleksandar
AU  - Slavković, Nikola
AU  - Kokotović, Branko
AU  - Manasijević, Srecko
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/95
AB  - The paper proposes a programming methodology for advanced manufacturing based on STEP-NC, a compliant to multi-axis CNC woodworking machining center. The equivalent virtual machine in the CAD/CAM, STEP-NC environment, is developed as a part of a programming system for considered CNC woodworking machining center. STEP-NC aims to provide a digital thread for CNC manufacturing running in the STEP-NC System world via the Internet that can enable advanced e-Manufacturing. Virtual machine as a digital twin is configured and implemented into the control system based on LinuxCNC, but configured virtual machine as a Web interface based on STEP-NC, also. The developed methodology is validated through machining simulation using the configured digital twin in the control system and machining experiments on the real machine.
PB  - Taylor & Francis Ltd, Abingdon
T2  - Wood Material Science & Engineering
T1  - Programming methodology for multi-axis CNC woodworking machining center for advanced manufacturing based on STEP-NC
DO  - 10.1080/17480272.2022.2057816
ER  - 
@article{
author = "Živanović, Saša and Dimić, Zoran and Rakić, Aleksandar and Slavković, Nikola and Kokotović, Branko and Manasijević, Srecko",
year = "2022",
abstract = "The paper proposes a programming methodology for advanced manufacturing based on STEP-NC, a compliant to multi-axis CNC woodworking machining center. The equivalent virtual machine in the CAD/CAM, STEP-NC environment, is developed as a part of a programming system for considered CNC woodworking machining center. STEP-NC aims to provide a digital thread for CNC manufacturing running in the STEP-NC System world via the Internet that can enable advanced e-Manufacturing. Virtual machine as a digital twin is configured and implemented into the control system based on LinuxCNC, but configured virtual machine as a Web interface based on STEP-NC, also. The developed methodology is validated through machining simulation using the configured digital twin in the control system and machining experiments on the real machine.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Wood Material Science & Engineering",
title = "Programming methodology for multi-axis CNC woodworking machining center for advanced manufacturing based on STEP-NC",
doi = "10.1080/17480272.2022.2057816"
}
Živanović, S., Dimić, Z., Rakić, A., Slavković, N., Kokotović, B.,& Manasijević, S.. (2022). Programming methodology for multi-axis CNC woodworking machining center for advanced manufacturing based on STEP-NC. in Wood Material Science & Engineering
Taylor & Francis Ltd, Abingdon..
https://doi.org/10.1080/17480272.2022.2057816
Živanović S, Dimić Z, Rakić A, Slavković N, Kokotović B, Manasijević S. Programming methodology for multi-axis CNC woodworking machining center for advanced manufacturing based on STEP-NC. in Wood Material Science & Engineering. 2022;.
doi:10.1080/17480272.2022.2057816 .
Živanović, Saša, Dimić, Zoran, Rakić, Aleksandar, Slavković, Nikola, Kokotović, Branko, Manasijević, Srecko, "Programming methodology for multi-axis CNC woodworking machining center for advanced manufacturing based on STEP-NC" in Wood Material Science & Engineering (2022),
https://doi.org/10.1080/17480272.2022.2057816 . .
1
1

Revitalizacija horizontalne bušilice glodalice LOLA HBG 80 upravljanjem otvorene arhitekture na LinuxCNC platformi

Živanović, Saša; Tanović, Ljubodrag; Puzović, Radovan; Kokotović, Branko; Slavković, Nikola; Popović, Mihajlo; Mladenović, Goran; Stojadinović, Slavenko; Pjević, Miloš; Vorkapić, Nikola; Dimić, Zoran; Rakić, Aleksandar; Manasijević, Srećko

(Univerzitet u Beogradu Mašinski Fakultet, 2022)

TY  - CONF
AU  - Živanović, Saša
AU  - Tanović, Ljubodrag
AU  - Puzović, Radovan
AU  - Kokotović, Branko
AU  - Slavković, Nikola
AU  - Popović, Mihajlo
AU  - Mladenović, Goran
AU  - Stojadinović, Slavenko
AU  - Pjević, Miloš
AU  - Vorkapić, Nikola
AU  - Dimić, Zoran
AU  - Rakić, Aleksandar
AU  - Manasijević, Srećko
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4629
AB  - U radu je pokazana revitalizacija horizontalne bušilice glodalice LOLA HBG 80 koja je uključila
hardversko softversku nadogradnju postojeće mašine. Kao sistem upravljanja izabarano je upravljanje
otvorene arhitektrue na LinuxCNC računarskoj platformi. Uspostavljen je sistem za programiranje i
verifikaciju programa. Konfigurisane su ekvivalentne virtuelne mašine u sistemu za programiranje i
upravljanje. Revitalizovana mašina je uspešno testirana i verifikovan je njen rad.
PB  - Univerzitet u Beogradu Mašinski Fakultet
C3  - 43 JUPITER konferencija : zbornik radova, Beograd, oktobar 2022
T1  - Revitalizacija horizontalne bušilice glodalice LOLA HBG 80 upravljanjem otvorene arhitekture na LinuxCNC platformi
EP  - 3.12
SP  - 3.1
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4629
ER  - 
@conference{
author = "Živanović, Saša and Tanović, Ljubodrag and Puzović, Radovan and Kokotović, Branko and Slavković, Nikola and Popović, Mihajlo and Mladenović, Goran and Stojadinović, Slavenko and Pjević, Miloš and Vorkapić, Nikola and Dimić, Zoran and Rakić, Aleksandar and Manasijević, Srećko",
year = "2022",
abstract = "U radu je pokazana revitalizacija horizontalne bušilice glodalice LOLA HBG 80 koja je uključila
hardversko softversku nadogradnju postojeće mašine. Kao sistem upravljanja izabarano je upravljanje
otvorene arhitektrue na LinuxCNC računarskoj platformi. Uspostavljen je sistem za programiranje i
verifikaciju programa. Konfigurisane su ekvivalentne virtuelne mašine u sistemu za programiranje i
upravljanje. Revitalizovana mašina je uspešno testirana i verifikovan je njen rad.",
publisher = "Univerzitet u Beogradu Mašinski Fakultet",
journal = "43 JUPITER konferencija : zbornik radova, Beograd, oktobar 2022",
title = "Revitalizacija horizontalne bušilice glodalice LOLA HBG 80 upravljanjem otvorene arhitekture na LinuxCNC platformi",
pages = "3.12-3.1",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4629"
}
Živanović, S., Tanović, L., Puzović, R., Kokotović, B., Slavković, N., Popović, M., Mladenović, G., Stojadinović, S., Pjević, M., Vorkapić, N., Dimić, Z., Rakić, A.,& Manasijević, S.. (2022). Revitalizacija horizontalne bušilice glodalice LOLA HBG 80 upravljanjem otvorene arhitekture na LinuxCNC platformi. in 43 JUPITER konferencija : zbornik radova, Beograd, oktobar 2022
Univerzitet u Beogradu Mašinski Fakultet., 3.1-3.12.
https://hdl.handle.net/21.15107/rcub_machinery_4629
Živanović S, Tanović L, Puzović R, Kokotović B, Slavković N, Popović M, Mladenović G, Stojadinović S, Pjević M, Vorkapić N, Dimić Z, Rakić A, Manasijević S. Revitalizacija horizontalne bušilice glodalice LOLA HBG 80 upravljanjem otvorene arhitekture na LinuxCNC platformi. in 43 JUPITER konferencija : zbornik radova, Beograd, oktobar 2022. 2022;:3.1-3.12.
https://hdl.handle.net/21.15107/rcub_machinery_4629 .
Živanović, Saša, Tanović, Ljubodrag, Puzović, Radovan, Kokotović, Branko, Slavković, Nikola, Popović, Mihajlo, Mladenović, Goran, Stojadinović, Slavenko, Pjević, Miloš, Vorkapić, Nikola, Dimić, Zoran, Rakić, Aleksandar, Manasijević, Srećko, "Revitalizacija horizontalne bušilice glodalice LOLA HBG 80 upravljanjem otvorene arhitekture na LinuxCNC platformi" in 43 JUPITER konferencija : zbornik radova, Beograd, oktobar 2022 (2022):3.1-3.12,
https://hdl.handle.net/21.15107/rcub_machinery_4629 .

Развој и имплементацијa управљачког система отворене архитектуре на вишеосном обрадном центру за обраду дрвета

Dimić, Zoran; Živanović, Saša; Rakić, Aleksandar; Manasijević, Srećko; Kokotović, Branko

(Лола Институт Београд, 2021)

TY  - GEN
AU  - Dimić, Zoran
AU  - Živanović, Saša
AU  - Rakić, Aleksandar
AU  - Manasijević, Srećko
AU  - Kokotović, Branko
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6954
AB  - Техничко решење припада области управљачких система нумерички управљаних машина алатки имплементираних на бази софтверских алата и хардвера отворене архитектуре, применом метода виртуелног пројектовања (virtual commissioning). Верификован је нов приступ развоју управљања машина алатки са сложеном кинематичком структуром и редундантним осама, применом парадигме дигиталног двојника (Digital Twin). Показана је могућност грешком вођеног развоја система управљања (error driven development), без импликација на реалну машину алатку. Основну суштину предметног техничког решења представља развој и имплементација управљачког система на бази софтвера и хардвера отворене архитектуре у циљу ревитализације вишеосног обрадног центра Bacci MX6 за обраду дрвета. Развојем је верификована метода виртуелног пројектовања, која је омогућила развој вођен грешком без негативних импликација на реалну машину уз повећање ефикасности и продуктивности развојног тима.
PB  - Лола Институт Београд
PB  - Универзитет у Београду, Машински факултет
T2  - Техничко решење (M83) је прихваћено од стране Матичног научног одбора за машинство и индустријски софтвер, на седници одржаној 20.10.2021.
T1  - Развој и имплементацијa управљачког система отворене архитектуре на вишеосном обрадном центру за обраду дрвета
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6954
ER  - 
@misc{
author = "Dimić, Zoran and Živanović, Saša and Rakić, Aleksandar and Manasijević, Srećko and Kokotović, Branko",
year = "2021",
abstract = "Техничко решење припада области управљачких система нумерички управљаних машина алатки имплементираних на бази софтверских алата и хардвера отворене архитектуре, применом метода виртуелног пројектовања (virtual commissioning). Верификован је нов приступ развоју управљања машина алатки са сложеном кинематичком структуром и редундантним осама, применом парадигме дигиталног двојника (Digital Twin). Показана је могућност грешком вођеног развоја система управљања (error driven development), без импликација на реалну машину алатку. Основну суштину предметног техничког решења представља развој и имплементација управљачког система на бази софтвера и хардвера отворене архитектуре у циљу ревитализације вишеосног обрадног центра Bacci MX6 за обраду дрвета. Развојем је верификована метода виртуелног пројектовања, која је омогућила развој вођен грешком без негативних импликација на реалну машину уз повећање ефикасности и продуктивности развојног тима.",
publisher = "Лола Институт Београд, Универзитет у Београду, Машински факултет",
journal = "Техничко решење (M83) је прихваћено од стране Матичног научног одбора за машинство и индустријски софтвер, на седници одржаној 20.10.2021.",
title = "Развој и имплементацијa управљачког система отворене архитектуре на вишеосном обрадном центру за обраду дрвета",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6954"
}
Dimić, Z., Živanović, S., Rakić, A., Manasijević, S.,& Kokotović, B.. (2021). Развој и имплементацијa управљачког система отворене архитектуре на вишеосном обрадном центру за обраду дрвета. in Техничко решење (M83) је прихваћено од стране Матичног научног одбора за машинство и индустријски софтвер, на седници одржаној 20.10.2021.
Лола Институт Београд..
https://hdl.handle.net/21.15107/rcub_machinery_6954
Dimić Z, Živanović S, Rakić A, Manasijević S, Kokotović B. Развој и имплементацијa управљачког система отворене архитектуре на вишеосном обрадном центру за обраду дрвета. in Техничко решење (M83) је прихваћено од стране Матичног научног одбора за машинство и индустријски софтвер, на седници одржаној 20.10.2021.. 2021;.
https://hdl.handle.net/21.15107/rcub_machinery_6954 .
Dimić, Zoran, Živanović, Saša, Rakić, Aleksandar, Manasijević, Srećko, Kokotović, Branko, "Развој и имплементацијa управљачког система отворене архитектуре на вишеосном обрадном центру за обраду дрвета" in Техничко решење (M83) је прихваћено од стране Матичног научног одбора за машинство и индустријски софтвер, на седници одржаној 20.10.2021. (2021),
https://hdl.handle.net/21.15107/rcub_machinery_6954 .

An open architecture control system for multi-axis wood CNC machining center

Živanović, Saša; Dimić, Zoran; Rakić, Aleksandar; Knežević, Mladen; Mitrović, Stefan

(Faculty of Mechanical Engineering University of Banja Luka, 2021)

TY  - CONF
AU  - Živanović, Saša
AU  - Dimić, Zoran
AU  - Rakić, Aleksandar
AU  - Knežević, Mladen
AU  - Mitrović, Stefan
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4721
AB  - This paper presents an open architecture control system for multi‐axis wood computer numerical
control (CNC) milling machining centre, based on LinuxCNC. The wood CNC machining system is
supported by an equivalent virtual machine in a CAD/CAM environment, as well as in the control
system. Simulation within virtual environment is essential for multi‐axis machining, and the developed virtual machines are used for program verification and monitoring of the machining
process. The virtual machine in the programming system allows the verification of the program
before it’s sent to the actual machine, while the virtual machine in the control system represents the final verification of the program, as well as the process monitoring system. Configuration of the
control system and implementation of virtual machines will be shown, along with the conducted
machining experiments that ensued after the successful simulation on developed virtual machines.
PB  - Faculty of Mechanical Engineering University of Banja Luka
C3  - 15th International Conference on Accomplishments in Mechanical and Industrial Engineering DEMI 2021
T1  - An open architecture control system for multi-axis wood CNC machining center
EP  - 119
SP  - 113
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4721
ER  - 
@conference{
author = "Živanović, Saša and Dimić, Zoran and Rakić, Aleksandar and Knežević, Mladen and Mitrović, Stefan",
year = "2021",
abstract = "This paper presents an open architecture control system for multi‐axis wood computer numerical
control (CNC) milling machining centre, based on LinuxCNC. The wood CNC machining system is
supported by an equivalent virtual machine in a CAD/CAM environment, as well as in the control
system. Simulation within virtual environment is essential for multi‐axis machining, and the developed virtual machines are used for program verification and monitoring of the machining
process. The virtual machine in the programming system allows the verification of the program
before it’s sent to the actual machine, while the virtual machine in the control system represents the final verification of the program, as well as the process monitoring system. Configuration of the
control system and implementation of virtual machines will be shown, along with the conducted
machining experiments that ensued after the successful simulation on developed virtual machines.",
publisher = "Faculty of Mechanical Engineering University of Banja Luka",
journal = "15th International Conference on Accomplishments in Mechanical and Industrial Engineering DEMI 2021",
title = "An open architecture control system for multi-axis wood CNC machining center",
pages = "119-113",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4721"
}
Živanović, S., Dimić, Z., Rakić, A., Knežević, M.,& Mitrović, S.. (2021). An open architecture control system for multi-axis wood CNC machining center. in 15th International Conference on Accomplishments in Mechanical and Industrial Engineering DEMI 2021
Faculty of Mechanical Engineering University of Banja Luka., 113-119.
https://hdl.handle.net/21.15107/rcub_machinery_4721
Živanović S, Dimić Z, Rakić A, Knežević M, Mitrović S. An open architecture control system for multi-axis wood CNC machining center. in 15th International Conference on Accomplishments in Mechanical and Industrial Engineering DEMI 2021. 2021;:113-119.
https://hdl.handle.net/21.15107/rcub_machinery_4721 .
Živanović, Saša, Dimić, Zoran, Rakić, Aleksandar, Knežević, Mladen, Mitrović, Stefan, "An open architecture control system for multi-axis wood CNC machining center" in 15th International Conference on Accomplishments in Mechanical and Industrial Engineering DEMI 2021 (2021):113-119,
https://hdl.handle.net/21.15107/rcub_machinery_4721 .

Digital Twin Control of Multi-Axis Wood CNC Machining Center Based on LinuxCNC

Rakić, Aleksandar; Živanović, Saša; Dimić, Zoran; Knežević, Mladen

(North Carolina State Univ Dept Wood & Paper Sci, Raleigh, 2021)

TY  - JOUR
AU  - Rakić, Aleksandar
AU  - Živanović, Saša
AU  - Dimić, Zoran
AU  - Knežević, Mladen
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3618
AB  - This paper presents an application of an open architecture control system implemented on a multi-axis wood computer numerical control milling machining center, as a digital twin control. The development of the digital twin control system was motivated by research and educational requirements, especially in the field of configuring a new control system by "virtual commissioning", enabling the validation of the developed controls, program verification, and analysis of the machining process and monitoring. The considered wood computer numerical control (CNC) machining system is supported by an equivalent virtual machine in a computer-aided design and computer-aided manufacturing (CAD/CAM) environment, as well as in the control system, as a digital twin. The configured virtual machines are used for the verification of the machining program and programming system via machining simulation, which is extremely important in multi-axis machining. Several test wood workpieces were machined to validate the effectiveness of the developed control system based on LinuxCNC.
PB  - North Carolina State Univ Dept Wood & Paper Sci, Raleigh
T2  - Bioresources
T1  - Digital Twin Control of Multi-Axis Wood CNC Machining Center Based on LinuxCNC
EP  - 1130
IS  - 1
SP  - 1115
VL  - 16
DO  - 10.15376/biores.16.1.1115-1130
ER  - 
@article{
author = "Rakić, Aleksandar and Živanović, Saša and Dimić, Zoran and Knežević, Mladen",
year = "2021",
abstract = "This paper presents an application of an open architecture control system implemented on a multi-axis wood computer numerical control milling machining center, as a digital twin control. The development of the digital twin control system was motivated by research and educational requirements, especially in the field of configuring a new control system by "virtual commissioning", enabling the validation of the developed controls, program verification, and analysis of the machining process and monitoring. The considered wood computer numerical control (CNC) machining system is supported by an equivalent virtual machine in a computer-aided design and computer-aided manufacturing (CAD/CAM) environment, as well as in the control system, as a digital twin. The configured virtual machines are used for the verification of the machining program and programming system via machining simulation, which is extremely important in multi-axis machining. Several test wood workpieces were machined to validate the effectiveness of the developed control system based on LinuxCNC.",
publisher = "North Carolina State Univ Dept Wood & Paper Sci, Raleigh",
journal = "Bioresources",
title = "Digital Twin Control of Multi-Axis Wood CNC Machining Center Based on LinuxCNC",
pages = "1130-1115",
number = "1",
volume = "16",
doi = "10.15376/biores.16.1.1115-1130"
}
Rakić, A., Živanović, S., Dimić, Z.,& Knežević, M.. (2021). Digital Twin Control of Multi-Axis Wood CNC Machining Center Based on LinuxCNC. in Bioresources
North Carolina State Univ Dept Wood & Paper Sci, Raleigh., 16(1), 1115-1130.
https://doi.org/10.15376/biores.16.1.1115-1130
Rakić A, Živanović S, Dimić Z, Knežević M. Digital Twin Control of Multi-Axis Wood CNC Machining Center Based on LinuxCNC. in Bioresources. 2021;16(1):1115-1130.
doi:10.15376/biores.16.1.1115-1130 .
Rakić, Aleksandar, Živanović, Saša, Dimić, Zoran, Knežević, Mladen, "Digital Twin Control of Multi-Axis Wood CNC Machining Center Based on LinuxCNC" in Bioresources, 16, no. 1 (2021):1115-1130,
https://doi.org/10.15376/biores.16.1.1115-1130 . .
10
8

Flight Simulation Training Devices: Application, Classification, and Research

Vidaković, Jelena; Lazarević, Mihailo; Kvrgić, Vladimir; Vasovic Maksimović, Ivana; Rakić, Aleksandar

(Springer, New York, 2021)

TY  - JOUR
AU  - Vidaković, Jelena
AU  - Lazarević, Mihailo
AU  - Kvrgić, Vladimir
AU  - Vasovic Maksimović, Ivana
AU  - Rakić, Aleksandar
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3602
AB  - Safe and efficient training using flight simulation training devices (FSTD) is one of the fundamental components of training in the commercial, military, and general aviation. When compared with the live training, the most significant benefits of ground trainers include improved safety and the reduced cost of a pilot training process. Flight simulation is a multidisciplinary subject that relies on several research disciplines which have a tendency to be investigated separately and in parallel with each other. This paper presents a comprehensive overview of the research within the FSTD domain with a motivation to highlight contributions from separate research topics from a general aspect, which is necessary as FSTD is a complex man-machine system. Application areas of FSTD usage are addressed, and the terminology used in the literature is discussed. Identification, classification, and overview of major research fields in the FSTD domain are presented. Specific characteristics of FSTD for fighter aircraft are discussed separately.
PB  - Springer, New York
T2  - International Journal of Aeronautical and Space Sciences
T1  - Flight Simulation Training Devices: Application, Classification, and Research
EP  - 885
IS  - 4
SP  - 874
VL  - 22
DO  - 10.1007/s42405-021-00358-y
ER  - 
@article{
author = "Vidaković, Jelena and Lazarević, Mihailo and Kvrgić, Vladimir and Vasovic Maksimović, Ivana and Rakić, Aleksandar",
year = "2021",
abstract = "Safe and efficient training using flight simulation training devices (FSTD) is one of the fundamental components of training in the commercial, military, and general aviation. When compared with the live training, the most significant benefits of ground trainers include improved safety and the reduced cost of a pilot training process. Flight simulation is a multidisciplinary subject that relies on several research disciplines which have a tendency to be investigated separately and in parallel with each other. This paper presents a comprehensive overview of the research within the FSTD domain with a motivation to highlight contributions from separate research topics from a general aspect, which is necessary as FSTD is a complex man-machine system. Application areas of FSTD usage are addressed, and the terminology used in the literature is discussed. Identification, classification, and overview of major research fields in the FSTD domain are presented. Specific characteristics of FSTD for fighter aircraft are discussed separately.",
publisher = "Springer, New York",
journal = "International Journal of Aeronautical and Space Sciences",
title = "Flight Simulation Training Devices: Application, Classification, and Research",
pages = "885-874",
number = "4",
volume = "22",
doi = "10.1007/s42405-021-00358-y"
}
Vidaković, J., Lazarević, M., Kvrgić, V., Vasovic Maksimović, I.,& Rakić, A.. (2021). Flight Simulation Training Devices: Application, Classification, and Research. in International Journal of Aeronautical and Space Sciences
Springer, New York., 22(4), 874-885.
https://doi.org/10.1007/s42405-021-00358-y
Vidaković J, Lazarević M, Kvrgić V, Vasovic Maksimović I, Rakić A. Flight Simulation Training Devices: Application, Classification, and Research. in International Journal of Aeronautical and Space Sciences. 2021;22(4):874-885.
doi:10.1007/s42405-021-00358-y .
Vidaković, Jelena, Lazarević, Mihailo, Kvrgić, Vladimir, Vasovic Maksimović, Ivana, Rakić, Aleksandar, "Flight Simulation Training Devices: Application, Classification, and Research" in International Journal of Aeronautical and Space Sciences, 22, no. 4 (2021):874-885,
https://doi.org/10.1007/s42405-021-00358-y . .
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