ОЦІНЮВАННЯ ЯКОСТІ СИСТЕМ ДОПОВНЕНОЇ РЕАЛЬНОСТІ: АНАЛІЗ СТАНУ ДОСЛІДЖЕНЬ
Ключові слова:
доповнена реальність, моделі якості, метрики, досвід користувача, якість використання
Анотація
Завдяки стрімкому розповсюдженню технології доповненої реальності в різних сферах людської діяльності постало питання оцінки якості цих систем. Хоч дослідження в цьому напрямку вже проводились, але вони охоплювали окремі показники якості і не пропонували єдину комплексну модель. Для оцінки якості систем доповненої реальності використовувався стандарт ISO-25010. Але даний стандарт не враховує особливі відмінності систем і додатків доповненої реальності, що робить дослідження для даного напрямку надзвичайно актуальними. Метою даної статті є огляд і систематизація існуючих публікацій на тему дослідження якості доповненої реальності для визначення поточних результатів та актуальних напрямків досліджень для подальшого використання при розробці моделей та метричних методів оцінки якості систем доповненої реальності. В ході проведення огляду було встановлено, що найбільша кількість досліджень присвячена якості використання доповненої реальності та користувацькому досвіду використання таких систем. В більшості випадків пропонується проводити оцінку за допомогою методу евристичного. Також є спроби розробки метрик на основі існуючих стандартів якості для програмних систем або модернізувати існуючі моделі оцінки. Пропозиції щодо розробки окремих метричних методів оцінки систем доповненої реальності відсутні або знаходяться в закритому доступі. На основі отриманих результатів огляду можна зробити висновок, що при розробці моделей і метрик оцінки якості систем доповненої реальності потрібно буде враховувати такі характеристики як якість використання, якість досвіду користувача та візуальну привабливість. Даний перелік планується доповнити після проведення більш глибокого огляду існуючих досліджень.Завантаження
Дані про завантаження поки що недоступні.
Посилання
1. Azuma R. T. A Survey of Augmented Reality [Electronic resource] / Ronald T. Azuma // Presence: Teleoperators and Virtual Environments. – 1997. – Vol. 6, no. 4. – P. 355-385. – DOI: https://doi.org/10.1162/pres.1997.6.4.355
2. Milgram P. A Taxonomy Of Mixed Reality Visual Displays [Electronic resource] / Paul Milgram, Fumio Kishino // IEICE Transactions on Information Systems. – 1994. – E77D, no. 12. – P. 1321–1329. – Mode of access: https://cs.gmu.edu/~zduric/cs499/Readings/r76JBo-Milgram_IEICE_1994.pdf
3. Kaur K. Designing virtual environments for usability [Electronic resource] : Electronic Thesis or Dissertation / Kaur Kulwinder. – [S. l.], 1998. – Mode of access: http://openaccess.city.ac.uk/7567/
4. Sutcliffe A. G. Evaluating the usability of virtual reality user interfaces [Electronic resource] / A. G. Sutcliffe, K. Deol Kaur // Behaviour & Information Technology. – 2000. – Vol. 19, no. 6. – P. 415-426. – DOI: http://dx.doi.org/10.1080/014492900750052679
5. Bowman D. A. A Survey of Usability Evaluation in Virtual Environments: Classification and Comparison of Methods [Electronic resource] / Doug A. Bowman, Joseph L. Gabbard, Deborah Hix // Presence: Teleoperators and Virtual Environments. – 2002. – Vol. 11, no. 4. – P. 404-424. – DOI: https://doi.org/10.1162/105474602760204309
6. Gabbart J. L. Usability Engineering of Virtual Environments[Electronic resource] /Joseph L. Gabbard, Deborah Hix // Handbook of Virtual Environments (1st Edition). – Boca Raton, CRC Press, 2002. – P. 681-699. DOI: https://doi.org/10.1201/9780585399102
7. Tromp J. G. Systematic Usability Evaluation and Design Issues for Collaborative Virtual Environments [Electronic resource] / Jolanda G. Tromp, Anthony Steed, John R. Wilson // Presence: Teleoperators and Virtual Environments. – 2003. – Vol. 12, no. 3. – P. 241–267. – DOI: https://doi.org/10.1162/105474603765879512
8. Gabbard J. L. Researching Usability Design and Evaluation Guidelines for Augmented Reality (AR) Systems [Electronic resource] / Joseph L. Gabbard. – Mode of access: https://www.rkriz.net/sv/classes/ESM4714/Student_Proj/class00/gabbard/index.html
9. Usability engineering: domain analysis activities for augmented-reality systems [Electronic resource] / Joseph Gabbard [et al.] // Electronic Imaging 2002, San Jose, CA / ed. by A. J. Woods [et al.]. – [S. l.], 2002. – DOI: http://dx.doi.org/10.1117/12.468073
10. Bach C. Obstacles and Perspectives for Evaluating Mixed Reality Usability [Electronic resource] / Cédric Bach, Dominique L. Scapin // ResearchGate. – Mode of access: https://www.researchgate.net/publication/221104007_Obstacles_and_Perspectives_for_Evaluating_Mixed_Reality_Usability
11. Träskbäck M. User requirements and usability of mixed reality applications [Electronic resource] : Licentiate thesis / Träskbäck Marjaana. – Helsinki, 2004. – 109 p. – Mode of access: https://aaltodoc.aalto.fi/bitstream/handle/123456789/48/urn012717.pdf?sequence=1&isAllowed=y
12. Alzua-Sorzabal A. An Experimental Usability Study for Augmented Reality Technologies in the Tourist Sector [Electronic resource] / Aurkene Alzua-Sorzabal, María Teresa Linaza, Marina Abad // Information and Communication Technologies in Tourism 2007. – Vienna. – P. 231-242. – DOI: http://dx.doi.org/10.1007/978-3-211-69566-1_22
13. Gabbard J. L. Usability Engineering for Augmented Reality: Employing User-Based Studies to Inform Design [Electronic resource] / J. L. Gabbard, J. E. Swan // IEEE Transactions on Visualization and Computer Graphics. – 2008. – Vol. 14, no. 3. – P. 513-525. – DOI: https://doi.org/10.1109/TVCG.2008.24
14. Kostaras N. N. Assessing the Usability of Augmented Reality Systems / Nektarios N. Kostaras, Michalis N. Xenos // 13th Panhellenic Conference on Informatics, Corfu, 10–12 September 2009. – Los Alamitos, 2009. – P. 197–201
15. Finstad K. The Usability Metric for User Experience [Electronic resource] / Kraig Finstad // Interacting with Computers. – 2010. – Vol. 22, no. 5. – P. 323-327. – DOI: http://dx.doi.org/10.1016/j.intcom.2010.04.004
16. Lin H.-C. K. Establishment And Usability Evaluation Of An Interactive Ar Learning System On Conservation Of Fish [Electronic resource] / Hao-Chiang Koong Lin [et al.] // The Turkish Online Journal of Educational Technology. – 2011. – Vol. 10, no. 4. – P. 181–187. – Mode of access: https://files.eric.ed.gov/fulltext/EJ946626.pdf
17. Rusu C. A Methodology to Establish Usability Heuristics [Electronic resource] / Cristian Rusu [et al.] // The Fourth International Conference on Advances in Computer-Human Interactions, Gosier, 23–28 February 2011. – [S. l.], 2011. – P. 59–62. – Mode of access: https://www.researchgate.net/publication/229040164_A_Methodology_to_establish_usability_heuristics
18. Ko S. M. Usability Principles for Augmented Reality Applications in a Smartphone Environment [Electronic resource] / Sang Min Ko, Won Suk Chang, Yong Gu Ji // International Journal of Human-Computer Interaction. – 2013. – Vol. 29, no. 8. – P. 501-515. – DOI: https://doi.org/10.1080/10447318.2012.722466
19. Kalalahti J. Developing Usability Evaluation Heuristics For Augmented Reality Applications [Electronic resource] : Masters thesis / Kalalahti Joanna. – Lappeenranta, 2015. – 90 p. – Mode of access: https://lutpub.lut.fi/bitstream/handle/10024/103081/masters_thesis_joanna_kalalahti_31122014.pdf?sequence=2
20. Tuli N. Usability Principles for Augmented Reality based Kindergarten Applications [Electronic resource] / Neha Tuli, Archana Mantri // Procedia Computer Science. – 2020. – Vol. 172. – P. 679-687. – DOI: https://doi.org/10.1016/j.procs.2020.05.089
21. Al-Obaidi A. Usability Principles for Augmented Reality Applications in Education [Electronic resource] / Arwa Al-Obaidi, Master Prince // International Journal of Computer Science and Network Security. – 2022. – Vol. 22, no. 1. – P. 49–54. – DOI: http://dx.doi.org/10.22937/IJCSNS.2022.22.1.8
22. Expected user experience of mobile augmented reality services: a user study in the context of shopping centres [Electronic resource] / Thomas Olsson [et al.] // Personal and Ubiquitous Computing. – 2011. – Vol. 17, no. 2. – P. 287-304. – DOI: http://dx.doi.org/10.1007/s00779-011-0494-x
23. Olsson T. User Expectations and Experiences of Mobile Augmented Reality Services [Electronic resource] / Thomas Olsson // Tampere University of Technology. – 2012. – P. 1–102. – Mode of access: https://urn.fi/URN:ISBN:978-952-15-2953-5
24. Towards a Model of User Experience in Immersive Virtual Environments [Electronic resource] / Katy Tcha-Tokey [et al.] // Advances in Human-Computer Interaction. – 2018. – Vol. 2018. – P. 1–10. – DOI: https://doi.org/10.1155/2018/7827286
25. Scheibmeir J. Quality Model for Testing Augmented Reality Applications [Electronic resource] / Jim Scheibmeir, Yashwant K. Malaiya // 2019 IEEE 10th Annual Ubiquitous Computing, Electronics & Mobile Communication Conference (UEMCON), New York City, NY, USA, 10–12 October 2019. – [S. l.], 2019. – DOI: https://doi.org/10.1109/UEMCON47517.2019.8992974
26. David A. The value of visual quality and service quality to augmented reality enabled mobile shopping experience [Electronic resource] / Alsius David [et al.] // Quality Management Journal. – 2021. – Vol. 28, no. 3. – P. 116–127. – DOI: https://doi.org/10.1080/10686967.2021.1920868
27. Huiyu D. Confusing Image Quality Assessment: Towards Better Augmented Reality Experience [Electronic resource] / Duan Huiyu [et al.] // arXiv Computer Vision and Pattern Recognition. – 2022. – P. 1–13. – DOI: https://doi.org/10.48550/arXiv.2204.04900
28. Leue M. C. A Theoretical Model of Augmented Reality Acceptance / M. Claudia Leue, Dario tom Dieck, Timothy Jung // Department of Food and Tourism Management Manchester Metropolitan University. – 2014. – P. 1–5. – Mode of access: https://agrilifecdn.tamu.edu/ertr/files/2014/02/enter2014_RN_93.pdf
29. Understanding users’ continuance intention toward smartphone augmented reality applications [Electronic resource] / Keesung Kim [et al.] // Information Development. – 2014. – Vol. 32, no. 2. – P. 161–174. – DOI: https://doi.org/10.1177/0266666914535119
30. Towards the development of guidelines for educational evaluation of augmented reality tools [Electronic resource] / Manoela M. O. da Silva [et al.] // 2016 IEEE Virtual Reality Workshop on K-12 Embodied Learning through Virtual & Augmented Reality (KELVAR), Greenville, SC, USA, 19 March 2016. – [S. l.], 2016. – DOI: https://doi.org/10.1109/KELVAR. 2016.7563677
31. User evaluation of mobile augmented reality scenarios [Electronic resource] / Thomas Olsson [et al.] // Journal of Ambient Intelligence and Smart Environments. – 2012. – Vol. 4, no. 1. – P. 29-47. – DOI: https://doi.org/10.3233/AIS-2011-0127
32. Dünser A. Evaluating Augmented Reality Systems [Electronic resource] / Andreas Dünser, Mark Billinghurst // Handbook of Augmented Reality. – New York, NY, 2011. – P. 289-307. – DOI: https://doi.org/10.1007/978-1-4614-0064-6_13
33. Augmented Reality Design Heuristics: Designing for Dynamic Interactions [Electronic resource] / Tristan C. Endsley [et al.] // Proceedings of the Human Factors and Ergonomics Society Annual Meeting. – 2017. – Vol. 61, no. 1. – P. 2100–2104. – DOI: https://doi.org/10.1177/1541931213602007
34. Graphic User Interface Design Principles for Designing Augmented Reality Applications [Electronic resource] / Afshan Ejaz [et al.] // International Journal of Advanced Computer Science and Applications. – 2019. – Vol. 10, no. 2. – DOI: https://doi.org/10.14569/IJACSA.2019.0100228
35. Орехова А.А. Качество в использовании интерактивных параллельных программных средств / А. А. Орехова, К. А. Бохан, В. С. Харченко // Системи управління, навігації та зв'язку . - Київ, 2012 . - Т. 1. - Вип. 1 (21). - С. 127-131.
36. Orechova A. Human-machine interface quality assessment techniques: Green and safety issues [Electronic resource] / Аnastasiia Orechova, Oleksandr Orehov, Vyacheslav Kharchenko // DT 2014 - 10th International Conference on Digital Technologies. – IEEE, 2014. – P. 248-254. – DOI: https://doi.org/10.1109/DT.2014.6868723
2. Milgram P. A Taxonomy Of Mixed Reality Visual Displays [Electronic resource] / Paul Milgram, Fumio Kishino // IEICE Transactions on Information Systems. – 1994. – E77D, no. 12. – P. 1321–1329. – Mode of access: https://cs.gmu.edu/~zduric/cs499/Readings/r76JBo-Milgram_IEICE_1994.pdf
3. Kaur K. Designing virtual environments for usability [Electronic resource] : Electronic Thesis or Dissertation / Kaur Kulwinder. – [S. l.], 1998. – Mode of access: http://openaccess.city.ac.uk/7567/
4. Sutcliffe A. G. Evaluating the usability of virtual reality user interfaces [Electronic resource] / A. G. Sutcliffe, K. Deol Kaur // Behaviour & Information Technology. – 2000. – Vol. 19, no. 6. – P. 415-426. – DOI: http://dx.doi.org/10.1080/014492900750052679
5. Bowman D. A. A Survey of Usability Evaluation in Virtual Environments: Classification and Comparison of Methods [Electronic resource] / Doug A. Bowman, Joseph L. Gabbard, Deborah Hix // Presence: Teleoperators and Virtual Environments. – 2002. – Vol. 11, no. 4. – P. 404-424. – DOI: https://doi.org/10.1162/105474602760204309
6. Gabbart J. L. Usability Engineering of Virtual Environments[Electronic resource] /Joseph L. Gabbard, Deborah Hix // Handbook of Virtual Environments (1st Edition). – Boca Raton, CRC Press, 2002. – P. 681-699. DOI: https://doi.org/10.1201/9780585399102
7. Tromp J. G. Systematic Usability Evaluation and Design Issues for Collaborative Virtual Environments [Electronic resource] / Jolanda G. Tromp, Anthony Steed, John R. Wilson // Presence: Teleoperators and Virtual Environments. – 2003. – Vol. 12, no. 3. – P. 241–267. – DOI: https://doi.org/10.1162/105474603765879512
8. Gabbard J. L. Researching Usability Design and Evaluation Guidelines for Augmented Reality (AR) Systems [Electronic resource] / Joseph L. Gabbard. – Mode of access: https://www.rkriz.net/sv/classes/ESM4714/Student_Proj/class00/gabbard/index.html
9. Usability engineering: domain analysis activities for augmented-reality systems [Electronic resource] / Joseph Gabbard [et al.] // Electronic Imaging 2002, San Jose, CA / ed. by A. J. Woods [et al.]. – [S. l.], 2002. – DOI: http://dx.doi.org/10.1117/12.468073
10. Bach C. Obstacles and Perspectives for Evaluating Mixed Reality Usability [Electronic resource] / Cédric Bach, Dominique L. Scapin // ResearchGate. – Mode of access: https://www.researchgate.net/publication/221104007_Obstacles_and_Perspectives_for_Evaluating_Mixed_Reality_Usability
11. Träskbäck M. User requirements and usability of mixed reality applications [Electronic resource] : Licentiate thesis / Träskbäck Marjaana. – Helsinki, 2004. – 109 p. – Mode of access: https://aaltodoc.aalto.fi/bitstream/handle/123456789/48/urn012717.pdf?sequence=1&isAllowed=y
12. Alzua-Sorzabal A. An Experimental Usability Study for Augmented Reality Technologies in the Tourist Sector [Electronic resource] / Aurkene Alzua-Sorzabal, María Teresa Linaza, Marina Abad // Information and Communication Technologies in Tourism 2007. – Vienna. – P. 231-242. – DOI: http://dx.doi.org/10.1007/978-3-211-69566-1_22
13. Gabbard J. L. Usability Engineering for Augmented Reality: Employing User-Based Studies to Inform Design [Electronic resource] / J. L. Gabbard, J. E. Swan // IEEE Transactions on Visualization and Computer Graphics. – 2008. – Vol. 14, no. 3. – P. 513-525. – DOI: https://doi.org/10.1109/TVCG.2008.24
14. Kostaras N. N. Assessing the Usability of Augmented Reality Systems / Nektarios N. Kostaras, Michalis N. Xenos // 13th Panhellenic Conference on Informatics, Corfu, 10–12 September 2009. – Los Alamitos, 2009. – P. 197–201
15. Finstad K. The Usability Metric for User Experience [Electronic resource] / Kraig Finstad // Interacting with Computers. – 2010. – Vol. 22, no. 5. – P. 323-327. – DOI: http://dx.doi.org/10.1016/j.intcom.2010.04.004
16. Lin H.-C. K. Establishment And Usability Evaluation Of An Interactive Ar Learning System On Conservation Of Fish [Electronic resource] / Hao-Chiang Koong Lin [et al.] // The Turkish Online Journal of Educational Technology. – 2011. – Vol. 10, no. 4. – P. 181–187. – Mode of access: https://files.eric.ed.gov/fulltext/EJ946626.pdf
17. Rusu C. A Methodology to Establish Usability Heuristics [Electronic resource] / Cristian Rusu [et al.] // The Fourth International Conference on Advances in Computer-Human Interactions, Gosier, 23–28 February 2011. – [S. l.], 2011. – P. 59–62. – Mode of access: https://www.researchgate.net/publication/229040164_A_Methodology_to_establish_usability_heuristics
18. Ko S. M. Usability Principles for Augmented Reality Applications in a Smartphone Environment [Electronic resource] / Sang Min Ko, Won Suk Chang, Yong Gu Ji // International Journal of Human-Computer Interaction. – 2013. – Vol. 29, no. 8. – P. 501-515. – DOI: https://doi.org/10.1080/10447318.2012.722466
19. Kalalahti J. Developing Usability Evaluation Heuristics For Augmented Reality Applications [Electronic resource] : Masters thesis / Kalalahti Joanna. – Lappeenranta, 2015. – 90 p. – Mode of access: https://lutpub.lut.fi/bitstream/handle/10024/103081/masters_thesis_joanna_kalalahti_31122014.pdf?sequence=2
20. Tuli N. Usability Principles for Augmented Reality based Kindergarten Applications [Electronic resource] / Neha Tuli, Archana Mantri // Procedia Computer Science. – 2020. – Vol. 172. – P. 679-687. – DOI: https://doi.org/10.1016/j.procs.2020.05.089
21. Al-Obaidi A. Usability Principles for Augmented Reality Applications in Education [Electronic resource] / Arwa Al-Obaidi, Master Prince // International Journal of Computer Science and Network Security. – 2022. – Vol. 22, no. 1. – P. 49–54. – DOI: http://dx.doi.org/10.22937/IJCSNS.2022.22.1.8
22. Expected user experience of mobile augmented reality services: a user study in the context of shopping centres [Electronic resource] / Thomas Olsson [et al.] // Personal and Ubiquitous Computing. – 2011. – Vol. 17, no. 2. – P. 287-304. – DOI: http://dx.doi.org/10.1007/s00779-011-0494-x
23. Olsson T. User Expectations and Experiences of Mobile Augmented Reality Services [Electronic resource] / Thomas Olsson // Tampere University of Technology. – 2012. – P. 1–102. – Mode of access: https://urn.fi/URN:ISBN:978-952-15-2953-5
24. Towards a Model of User Experience in Immersive Virtual Environments [Electronic resource] / Katy Tcha-Tokey [et al.] // Advances in Human-Computer Interaction. – 2018. – Vol. 2018. – P. 1–10. – DOI: https://doi.org/10.1155/2018/7827286
25. Scheibmeir J. Quality Model for Testing Augmented Reality Applications [Electronic resource] / Jim Scheibmeir, Yashwant K. Malaiya // 2019 IEEE 10th Annual Ubiquitous Computing, Electronics & Mobile Communication Conference (UEMCON), New York City, NY, USA, 10–12 October 2019. – [S. l.], 2019. – DOI: https://doi.org/10.1109/UEMCON47517.2019.8992974
26. David A. The value of visual quality and service quality to augmented reality enabled mobile shopping experience [Electronic resource] / Alsius David [et al.] // Quality Management Journal. – 2021. – Vol. 28, no. 3. – P. 116–127. – DOI: https://doi.org/10.1080/10686967.2021.1920868
27. Huiyu D. Confusing Image Quality Assessment: Towards Better Augmented Reality Experience [Electronic resource] / Duan Huiyu [et al.] // arXiv Computer Vision and Pattern Recognition. – 2022. – P. 1–13. – DOI: https://doi.org/10.48550/arXiv.2204.04900
28. Leue M. C. A Theoretical Model of Augmented Reality Acceptance / M. Claudia Leue, Dario tom Dieck, Timothy Jung // Department of Food and Tourism Management Manchester Metropolitan University. – 2014. – P. 1–5. – Mode of access: https://agrilifecdn.tamu.edu/ertr/files/2014/02/enter2014_RN_93.pdf
29. Understanding users’ continuance intention toward smartphone augmented reality applications [Electronic resource] / Keesung Kim [et al.] // Information Development. – 2014. – Vol. 32, no. 2. – P. 161–174. – DOI: https://doi.org/10.1177/0266666914535119
30. Towards the development of guidelines for educational evaluation of augmented reality tools [Electronic resource] / Manoela M. O. da Silva [et al.] // 2016 IEEE Virtual Reality Workshop on K-12 Embodied Learning through Virtual & Augmented Reality (KELVAR), Greenville, SC, USA, 19 March 2016. – [S. l.], 2016. – DOI: https://doi.org/10.1109/KELVAR. 2016.7563677
31. User evaluation of mobile augmented reality scenarios [Electronic resource] / Thomas Olsson [et al.] // Journal of Ambient Intelligence and Smart Environments. – 2012. – Vol. 4, no. 1. – P. 29-47. – DOI: https://doi.org/10.3233/AIS-2011-0127
32. Dünser A. Evaluating Augmented Reality Systems [Electronic resource] / Andreas Dünser, Mark Billinghurst // Handbook of Augmented Reality. – New York, NY, 2011. – P. 289-307. – DOI: https://doi.org/10.1007/978-1-4614-0064-6_13
33. Augmented Reality Design Heuristics: Designing for Dynamic Interactions [Electronic resource] / Tristan C. Endsley [et al.] // Proceedings of the Human Factors and Ergonomics Society Annual Meeting. – 2017. – Vol. 61, no. 1. – P. 2100–2104. – DOI: https://doi.org/10.1177/1541931213602007
34. Graphic User Interface Design Principles for Designing Augmented Reality Applications [Electronic resource] / Afshan Ejaz [et al.] // International Journal of Advanced Computer Science and Applications. – 2019. – Vol. 10, no. 2. – DOI: https://doi.org/10.14569/IJACSA.2019.0100228
35. Орехова А.А. Качество в использовании интерактивных параллельных программных средств / А. А. Орехова, К. А. Бохан, В. С. Харченко // Системи управління, навігації та зв'язку . - Київ, 2012 . - Т. 1. - Вип. 1 (21). - С. 127-131.
36. Orechova A. Human-machine interface quality assessment techniques: Green and safety issues [Electronic resource] / Аnastasiia Orechova, Oleksandr Orehov, Vyacheslav Kharchenko // DT 2014 - 10th International Conference on Digital Technologies. – IEEE, 2014. – P. 248-254. – DOI: https://doi.org/10.1109/DT.2014.6868723
Опубліковано
2022-11-29
Як цитувати
Kanarskyi Yevhenii Оцінювання якості систем доповненої реальності: аналіз стану досліджень / Yevhenii Kanarskyi, Oleksandr Orehov, Anastasiia Stadnyk // Системи управління, навігації та зв’язку. Збірник наукових праць. – Полтава: ПНТУ, 2022. – Т. 4 (70). – С. 79-87. – doi:https://doi.org/10.26906/SUNZ.2022.4.079.
Розділ
Інформаційні технології
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
