Araştırma Makalesi
BibTex RIS Kaynak Göster

Brain Circulation Status of Türkiye

Yıl 2025, Cilt: 15 Sayı: 1, 169 - 182, 30.04.2025
https://doi.org/10.53478/yuksekogretim.1407019

Öz

While the concept of “brain drain” remains commonly used to describe the emigration of highly skilled individuals, it falls short of capturing the complex, multidirectional flows of talent in today’s globalized world. To address this limitation, recent research has proposed a broader conceptual framework encompassing not only brain drain, but also reverse brain drain, brain gain, brain waste, brain linkage, and most notably, brain circulation. As such, the current study investigates the brain circulation patterns of highly skilled Turkish citizens by examining variables such as graduation department, host country, and sex. Utilizing microdata from 160,789 tertiary graduates who had been abroad between 2010 and 2022, it was found that 67,366 individuals returned to Türkiye, indicating a brain circulation rate of 41.9%. These findings suggest a significant level of return migration, pointing toward an emerging trend of brain circulation rather than a purely one-directional talent outflow.

Etik Beyan

In this article, the spelling rules, research and publication ethics, publication principles and ethical rules stated in the journal were followed. All violations arising from this article are under the responsibility of the author. Additionally, the comments regarding the findings obtained within the scope of this research belong only to the researchers and do not bind the Turkish Statistical Institute.

Kaynakça

  • Agrawal, A., Kapur, D., & McHale, J. (2007). Birds of a feather - better together? Exploring the optimal spatial distribution of ethnic inventors (Working Paper No. 12823). National Bureau of Economic Research. https://doi.org/10.3386/w12823
  • Aysu Köksal, Y. (2021). Mutluluk ekonomisi ve beyin göçü: Türkiye örneği. [Doctoral dissertation, University of Aydın Adnan Menderes]. http://adudspace.adu.edu.tr:8080/jspui/bitstream/11607/4427/1/3300.pdf
  • Barbone, L., Kahanec, M., Kureková, L., & Zimmermann, K. (2013). Migration from the eastern partnership countries to the European Union — options for a better future. IZA Institute of Labor Economics. https://www.iza.org/en/publications/r/157/migration-from-the-eastern-partnership-countries-to-theeuropean-union-options-for-a-better-future
  • Bhardwaj, B., & Sharma, D. (2023). Migration of skilled professionals across the border: Brain drain or brain gain? European Management Journal, 41(6), 1021–1033. https://doi.org/10.1016/j.emj.2022.12.011
  • Bilgeli, Ö., & Siegel, M. (2014). Policy perspectives of Turkey towards return migration: From permissive indifference to selective difference. Migration Letters, 11(2), 218–228. https://doi.org/10.33182/ml.v11i2.240
  • Blachford, D., & Zhang, B. (2014). Rethinking international migration of human capital and brain circulation: The case of Chinese-Canadian academics. Journal of Studies in International Education, 18(3), 202–222. https://doi.org/10.1177/1028315312474315
  • Chacko, E. (2007). From brain drain to brain gain: Reverse migration to Bangalore and Hyderabad, India’s globalizing high tech cities. GeoJournal, 68, 131–140. https://doi.org/10.1007/s10708-007-9078-8
  • Crescenzi, R., Holman, N., & Orru’, E. (2017). Why do they return? Beyond the economic drivers of graduate return migration. The Annals of Regional Science, 59, 603–627. https://doi.org/10.1007/s00168-016-0762-9
  • Daugeliene, R., & Marcinkeviciene, R. (2009). Brain circulation: Theoretical considerations. Inzinerine Ekonomika, 3(63), 49–57. https://etalpykla.lituanistika.lt/object/LT-LDB-0001:J.04~2009~1367168686648/
  • Docquier, F., & Rapoport, H. (2012). Globalization, brain drain, and development. Journal of Economic Literature, 50(3), 681–730. https://doi.org/10.1257/jel.50.3.681
  • Durmaz, A. (2020). Diaspora as a source of human capital: The effects of the relationship between scientific Turkish diaspora and the homeland on reverse brain drain. Migration and Development, 11(3), 717–736. https://doi.org/10.1080/21632324.2020.1816036
  • Elveren, A., & Toksöz, G. (2018). Türkiye’de beyin göçü yazını ve bir alan araştırması. Gürhan Fişek’in izinde ortak emek ortak eylem. Siyasal Kitabevi.
  • Ette, A., & Witte, N. (2021). Brain drain or brain circulation? Economic and non-economic factors driving the international migration of German citizens. In M. Erlinghagen, A. Ette, N. F. Schneider, & N. Witte (Eds.), The Global Lives of German Migrants (ss. 65–83). Springer International Publishing. https://doi.org/10.1007/978-3-030-67498-4_4
  • EUROSTAT. (2023). Implementation of ISCED 2011 (levels of education). https://ec.europa.eu/eurostat/statistics-explained/index.php?title=International_Standard_Classification_of_Education_(ISCED)#Correspondence_between_ISCED_2011_and_ISCED_1997
  • Gaillard, A., & Gaillard, J. (1998). The international circulation of scientists and technologists: A win-lose or win-win situation? Science Communication, 20(1), 106–115. https://doi.org/10.1177/1075547098020001013
  • Gibson, J., & McKenzie, D. (2011). Eight questions about brain drain. Journal of Economic Perspectives, 25(3), 107–128. https://doi.org/10.1257/jep.25.3.107
  • Güngör, N., & Tansel, A. (2007). Brain drain from Turkey: The case of professionals abroad. International Journal of Manpower, 29(4), 323–347. https://doi.org/10.1108/01437720810884746
  • Güngör, N., & Tansel, A. (2014). Brain drain from Turkey: Return intentions of skilled migrants. International Migration, 52(5), 208–226. https://doi.org/10.1111/imig.12013
  • Haque, N. U., & Kim, S.-J. (1995). “Human capital flight”: Impact of migration on income and growth. IMF Staff Papers, 42(3), 577–607. https://doi.org/10.2307/3867533
  • Horvat, V. (2004). Brain drain. Threat to successful transition in South East Europe? Southeast European Politics, 5(1), 76–93. http://www.seep.ceu.hu/archives/issue51/horvat.pdf
  • Ince, C. (2020). From brain drain to brain circulation: Brain power in regional development. International Journal of Eurasia Social Sciences, 11(42), 1092–1114. https://doi.org/10.35826/ijoess.2808
  • Jöns, H. (2009). Brain circulation and transnational knowledge networks: Studying long-term effects of academic mobility to Germany, 1954–2000. Global Networks, 9(3), 315–338. https://doi.org/10.1111/j.1471-0374.2009.00256.x
  • Le, T. (2008). Brain drain or brain circulation: Evidence from OECD’s international migration and R&D spillovers. Scottish Journal of Political Economy, 55(5), 618–636. https://doi.org/10.1111/j.1467-9485.2008.00468.x
  • Lee, J. J., & Kim, D. (2010). Brain gain or brain circulation? U.S. doctoral recipients returning to South Korea. Higher Education, 59(5), 627–643. https://doi.org/10.1007/s10734-009-9270-5
  • Marini, G., & Yang, L. (2021). Globally bred Chinese talents returning home: An analysis of a reverse brain-drain flagship policy. Science and Public Policy, 48(4), 541–552. https://doi.org/10.1093/scipol/scab021
  • Metin, F. (2023). Brain drain from Türkiye: Register evidence of non-return graduates. Research in Educational Administration & Leadership, 8(2), 1–40. https://doi.org/10.30828/real.1149770
  • Metin, F., & Ertan, H. T. (2022). The brain drain of IT professionals: Register evidence of non-return graduates from Türkiye. Bogazici Journal Review of Social, Economic and Administrative Studies, 36(2), 82–100. https://doi.org/10.21773/boun.36.2.2
  • Milio, S., Lattanzi, R., Casadio, F., Crosta, N., Raviglione, M., Ricci, P., & Scano, F. (2012). Brain drain, brain exchange and brain circulation. The case of Italy viewed from a global perspective. Aspen Institute Italia. https://riccardolattanzi.com/website/wp-content/uploads/PDFs/Reports/BrainDrain(English).pdf
  • Radwan, A., & Sakr, M. (2018). Exploring brain circulation as a concept to mitigate brain drain in Africa and improve EU–Africa cooperation in the field of science and technology. South African Journal of International Affairs, 25(4), 517–529. https://doi.org/10.1080/10220461.2018.1551151
  • Risberg, A., & Romani, L. (2022). Underemploying highly skilled migrants: An organizational logic protecting corporate normality. Human Relations, 75(4), 655–680. https://doi.org/10.1177/0018726721992854
  • Saxenian, A. (2005). From brain drain to brain circulation: Transnational communities and regional upgrading in India and China. Studies in Comparative International Development, 40, 35–61. https://doi.org/10.1007/BF02686293
  • Shin, G., & Moon, R. (2018). From brain drain to brain circulation and linkage (Report No. 978-1-931368-49-0). All Shorenstein APARC Publications.
  • Sönmez Çalış, Ö. (2019). Türkiye’ye tersine beyin göçü: Nitel bir araştırma [Doctoral dissertation, University of Sakarya]. https://hdl.handle.net/20.500.12619/77170
  • Staniscia, B., Deravignone, L., González-Martín, B., & Pumares, P. (2021). Youth mobility and the development of human capital: Is there a Southern European model? Journal of Ethnic and Migration Studies, 47(8), 1866–1882. https://doi.org/10.1080/1369183X.2019.1679417
  • Sunata, U. (2014). Tersine beyin göçünde sosyal ağların rolü: Türkiyeli mühendislerin Almanya’dan geriye göç deneyim ve algıları. Türk Psikoloji Yazıları, 17(34), 85–96.
  • Supreme Election Council of Türkiye. (2022). Circular 140/II. Procedures and principles of updating the overseas voter register. Retrieved from https://ysk.gov.tr/doc/genelge/dosya/77563/2018CBMV-Ydisi-GuncellestirmeGenelgesi.pdf
  • Teferra, D. (2005). Brain circulation: Unparalleled opportunities, underlying challenges, and outmoded presumptions. Journal of Studies in International Education, 9(3), 229–250. https://doi.org/10.1177/1028315305277619
  • Teney, C. (2021). Immigration of highly skilled European professionals to Germany: Intra-EU brain gain or brain circulation? Innovation: The European Journal of Social Science Research, 34(1), 69–92. https://doi.org/10.1080/13511610.2019.1578197
  • Tung, R. (2016). New perspectives on human resource management in a global context. Journal of World Business, 51(1), 142–152. https://doi.org/10.1016/j.jwb.2015.10.004
  • Tungodden, B., Stern, N. H., & Kolstad, I. (Ed.). (2004). Toward pro-poor policies: Aid, institutions, and globalization. Copublication of the World Bank and Oxford University Press.
  • Viseth, A. (2020). Immigration and employment: Substitute versus complementary labor in selected African countries. IMF Working Papers, 2020(149), 1. https://doi.org/10.5089/9781513551937.001
  • Wadhwa, V. (2009). A reverse brain drain. Issues in Science and Technology, 25(3), 45–52. https://www.jstor.org/stable/43314945
  • Zweig, D. (2006). Competing for talent: China’s strategies to reverse the brain drain. International Labour Review, 145(1–2), 65–90. https://doi.org/10.1111/j.1564-913X.2006.tb00010.x

Türkiye’nin Beyin Dolaşımı Durumu

Yıl 2025, Cilt: 15 Sayı: 1, 169 - 182, 30.04.2025
https://doi.org/10.53478/yuksekogretim.1407019

Öz

Beyin göçü terimi oldukça yaygın bir biçimde kullanılmaktadır. Ne var ki, beyin göçü terimi, yüksek vasıflı beşeri sermayenin uluslararası dolaşımının açıklanmasında oldukça yetersiz kalmaktadır. Bu nedenle, mevcut çalışmada beyin göçü, tersine beyin göçü, beyin kazanımı, beyin israfı, beyin bağları ve özellikle beyin dolaşımı kavramlarını bütünsel olarak temsil edecek kavramsal bir çerçeve sunulmuştur. Bunun yanı sıra, yüksek vasıflı Türk vatandaşlarının beyin dolaşımı yapısı mezun olunan bölüm, gidilen hedef ülke ve cinsiyet ayrımında ortaya çıkarılmıştır. 2010–2022 yılları arasında yurtdışında bulunan 160.789 yükseköğretim mezunundan, Türkiye’ye geri dönen 67.366 kişiye ait mikroveri setleri analiz edilerek, Türkiye’nin beyin dolaşım oranı %41,9 olarak tespit edilmiştir.

Kaynakça

  • Agrawal, A., Kapur, D., & McHale, J. (2007). Birds of a feather - better together? Exploring the optimal spatial distribution of ethnic inventors (Working Paper No. 12823). National Bureau of Economic Research. https://doi.org/10.3386/w12823
  • Aysu Köksal, Y. (2021). Mutluluk ekonomisi ve beyin göçü: Türkiye örneği. [Doctoral dissertation, University of Aydın Adnan Menderes]. http://adudspace.adu.edu.tr:8080/jspui/bitstream/11607/4427/1/3300.pdf
  • Barbone, L., Kahanec, M., Kureková, L., & Zimmermann, K. (2013). Migration from the eastern partnership countries to the European Union — options for a better future. IZA Institute of Labor Economics. https://www.iza.org/en/publications/r/157/migration-from-the-eastern-partnership-countries-to-theeuropean-union-options-for-a-better-future
  • Bhardwaj, B., & Sharma, D. (2023). Migration of skilled professionals across the border: Brain drain or brain gain? European Management Journal, 41(6), 1021–1033. https://doi.org/10.1016/j.emj.2022.12.011
  • Bilgeli, Ö., & Siegel, M. (2014). Policy perspectives of Turkey towards return migration: From permissive indifference to selective difference. Migration Letters, 11(2), 218–228. https://doi.org/10.33182/ml.v11i2.240
  • Blachford, D., & Zhang, B. (2014). Rethinking international migration of human capital and brain circulation: The case of Chinese-Canadian academics. Journal of Studies in International Education, 18(3), 202–222. https://doi.org/10.1177/1028315312474315
  • Chacko, E. (2007). From brain drain to brain gain: Reverse migration to Bangalore and Hyderabad, India’s globalizing high tech cities. GeoJournal, 68, 131–140. https://doi.org/10.1007/s10708-007-9078-8
  • Crescenzi, R., Holman, N., & Orru’, E. (2017). Why do they return? Beyond the economic drivers of graduate return migration. The Annals of Regional Science, 59, 603–627. https://doi.org/10.1007/s00168-016-0762-9
  • Daugeliene, R., & Marcinkeviciene, R. (2009). Brain circulation: Theoretical considerations. Inzinerine Ekonomika, 3(63), 49–57. https://etalpykla.lituanistika.lt/object/LT-LDB-0001:J.04~2009~1367168686648/
  • Docquier, F., & Rapoport, H. (2012). Globalization, brain drain, and development. Journal of Economic Literature, 50(3), 681–730. https://doi.org/10.1257/jel.50.3.681
  • Durmaz, A. (2020). Diaspora as a source of human capital: The effects of the relationship between scientific Turkish diaspora and the homeland on reverse brain drain. Migration and Development, 11(3), 717–736. https://doi.org/10.1080/21632324.2020.1816036
  • Elveren, A., & Toksöz, G. (2018). Türkiye’de beyin göçü yazını ve bir alan araştırması. Gürhan Fişek’in izinde ortak emek ortak eylem. Siyasal Kitabevi.
  • Ette, A., & Witte, N. (2021). Brain drain or brain circulation? Economic and non-economic factors driving the international migration of German citizens. In M. Erlinghagen, A. Ette, N. F. Schneider, & N. Witte (Eds.), The Global Lives of German Migrants (ss. 65–83). Springer International Publishing. https://doi.org/10.1007/978-3-030-67498-4_4
  • EUROSTAT. (2023). Implementation of ISCED 2011 (levels of education). https://ec.europa.eu/eurostat/statistics-explained/index.php?title=International_Standard_Classification_of_Education_(ISCED)#Correspondence_between_ISCED_2011_and_ISCED_1997
  • Gaillard, A., & Gaillard, J. (1998). The international circulation of scientists and technologists: A win-lose or win-win situation? Science Communication, 20(1), 106–115. https://doi.org/10.1177/1075547098020001013
  • Gibson, J., & McKenzie, D. (2011). Eight questions about brain drain. Journal of Economic Perspectives, 25(3), 107–128. https://doi.org/10.1257/jep.25.3.107
  • Güngör, N., & Tansel, A. (2007). Brain drain from Turkey: The case of professionals abroad. International Journal of Manpower, 29(4), 323–347. https://doi.org/10.1108/01437720810884746
  • Güngör, N., & Tansel, A. (2014). Brain drain from Turkey: Return intentions of skilled migrants. International Migration, 52(5), 208–226. https://doi.org/10.1111/imig.12013
  • Haque, N. U., & Kim, S.-J. (1995). “Human capital flight”: Impact of migration on income and growth. IMF Staff Papers, 42(3), 577–607. https://doi.org/10.2307/3867533
  • Horvat, V. (2004). Brain drain. Threat to successful transition in South East Europe? Southeast European Politics, 5(1), 76–93. http://www.seep.ceu.hu/archives/issue51/horvat.pdf
  • Ince, C. (2020). From brain drain to brain circulation: Brain power in regional development. International Journal of Eurasia Social Sciences, 11(42), 1092–1114. https://doi.org/10.35826/ijoess.2808
  • Jöns, H. (2009). Brain circulation and transnational knowledge networks: Studying long-term effects of academic mobility to Germany, 1954–2000. Global Networks, 9(3), 315–338. https://doi.org/10.1111/j.1471-0374.2009.00256.x
  • Le, T. (2008). Brain drain or brain circulation: Evidence from OECD’s international migration and R&D spillovers. Scottish Journal of Political Economy, 55(5), 618–636. https://doi.org/10.1111/j.1467-9485.2008.00468.x
  • Lee, J. J., & Kim, D. (2010). Brain gain or brain circulation? U.S. doctoral recipients returning to South Korea. Higher Education, 59(5), 627–643. https://doi.org/10.1007/s10734-009-9270-5
  • Marini, G., & Yang, L. (2021). Globally bred Chinese talents returning home: An analysis of a reverse brain-drain flagship policy. Science and Public Policy, 48(4), 541–552. https://doi.org/10.1093/scipol/scab021
  • Metin, F. (2023). Brain drain from Türkiye: Register evidence of non-return graduates. Research in Educational Administration & Leadership, 8(2), 1–40. https://doi.org/10.30828/real.1149770
  • Metin, F., & Ertan, H. T. (2022). The brain drain of IT professionals: Register evidence of non-return graduates from Türkiye. Bogazici Journal Review of Social, Economic and Administrative Studies, 36(2), 82–100. https://doi.org/10.21773/boun.36.2.2
  • Milio, S., Lattanzi, R., Casadio, F., Crosta, N., Raviglione, M., Ricci, P., & Scano, F. (2012). Brain drain, brain exchange and brain circulation. The case of Italy viewed from a global perspective. Aspen Institute Italia. https://riccardolattanzi.com/website/wp-content/uploads/PDFs/Reports/BrainDrain(English).pdf
  • Radwan, A., & Sakr, M. (2018). Exploring brain circulation as a concept to mitigate brain drain in Africa and improve EU–Africa cooperation in the field of science and technology. South African Journal of International Affairs, 25(4), 517–529. https://doi.org/10.1080/10220461.2018.1551151
  • Risberg, A., & Romani, L. (2022). Underemploying highly skilled migrants: An organizational logic protecting corporate normality. Human Relations, 75(4), 655–680. https://doi.org/10.1177/0018726721992854
  • Saxenian, A. (2005). From brain drain to brain circulation: Transnational communities and regional upgrading in India and China. Studies in Comparative International Development, 40, 35–61. https://doi.org/10.1007/BF02686293
  • Shin, G., & Moon, R. (2018). From brain drain to brain circulation and linkage (Report No. 978-1-931368-49-0). All Shorenstein APARC Publications.
  • Sönmez Çalış, Ö. (2019). Türkiye’ye tersine beyin göçü: Nitel bir araştırma [Doctoral dissertation, University of Sakarya]. https://hdl.handle.net/20.500.12619/77170
  • Staniscia, B., Deravignone, L., González-Martín, B., & Pumares, P. (2021). Youth mobility and the development of human capital: Is there a Southern European model? Journal of Ethnic and Migration Studies, 47(8), 1866–1882. https://doi.org/10.1080/1369183X.2019.1679417
  • Sunata, U. (2014). Tersine beyin göçünde sosyal ağların rolü: Türkiyeli mühendislerin Almanya’dan geriye göç deneyim ve algıları. Türk Psikoloji Yazıları, 17(34), 85–96.
  • Supreme Election Council of Türkiye. (2022). Circular 140/II. Procedures and principles of updating the overseas voter register. Retrieved from https://ysk.gov.tr/doc/genelge/dosya/77563/2018CBMV-Ydisi-GuncellestirmeGenelgesi.pdf
  • Teferra, D. (2005). Brain circulation: Unparalleled opportunities, underlying challenges, and outmoded presumptions. Journal of Studies in International Education, 9(3), 229–250. https://doi.org/10.1177/1028315305277619
  • Teney, C. (2021). Immigration of highly skilled European professionals to Germany: Intra-EU brain gain or brain circulation? Innovation: The European Journal of Social Science Research, 34(1), 69–92. https://doi.org/10.1080/13511610.2019.1578197
  • Tung, R. (2016). New perspectives on human resource management in a global context. Journal of World Business, 51(1), 142–152. https://doi.org/10.1016/j.jwb.2015.10.004
  • Tungodden, B., Stern, N. H., & Kolstad, I. (Ed.). (2004). Toward pro-poor policies: Aid, institutions, and globalization. Copublication of the World Bank and Oxford University Press.
  • Viseth, A. (2020). Immigration and employment: Substitute versus complementary labor in selected African countries. IMF Working Papers, 2020(149), 1. https://doi.org/10.5089/9781513551937.001
  • Wadhwa, V. (2009). A reverse brain drain. Issues in Science and Technology, 25(3), 45–52. https://www.jstor.org/stable/43314945
  • Zweig, D. (2006). Competing for talent: China’s strategies to reverse the brain drain. International Labour Review, 145(1–2), 65–90. https://doi.org/10.1111/j.1564-913X.2006.tb00010.x
Toplam 43 adet kaynakça vardır.

Ayrıntılar

Birincil Dil İngilizce
Konular Yükseköğretim Çalışmaları (Diğer)
Bölüm Ampirik Araştırma
Yazarlar

Furkan Metin 0000-0001-5782-6581

Erken Görünüm Tarihi 30 Nisan 2025
Yayımlanma Tarihi 30 Nisan 2025
Gönderilme Tarihi 19 Aralık 2023
Kabul Tarihi 14 Ağustos 2024
Yayımlandığı Sayı Yıl 2025 Cilt: 15 Sayı: 1

Kaynak Göster

APA Metin, F. (2025). Brain Circulation Status of Türkiye. Yükseköğretim Dergisi, 15(1), 169-182. https://doi.org/10.53478/yuksekogretim.1407019

Yayıncı

34633
Vedat Dalokay Caddesi No: 112 Çankaya 06670 ANKARA

(+90) (212) 513 48 24
tuba-her@tuba.gov.tr 

     34636  34637  34638   34988

Yükseköğretim Dergisi / TÜBA Higher Education Research/Review (TÜBA-HER), dergide yayımlanan makalelerde ifade edilen görüşleri resmî olarak benimsememekte ve derginin basılı ya da çevrim içi sürümlerinde yer alan herhangi bir ürün veya hizmet reklamı konusunda garanti vermemektedir. Yayımlanan makalelerin bilimsel ve hukuki sorumluluğu yazar(lar)a aittir.

Makalelerle birlikte gönderilen resim, şekil, tablo vb. materyaller özgün olmalı ya da daha önce yayımlanmışlarsa, hem basılı hem de çevrim içi sürümlerde yayımlanmak üzere eser sahibinden alınmış yazılı izinle birlikte sunulmalıdır. Yazar(lar), dergide yayımlanan çalışmalarının telif hakkını saklı tutar. Makale dergide yayımlandığında, mali haklar ve umuma iletim hakları, işleme, çoğaltma, temsil, basım, yayın ve dağıtım hakları TÜBA’ya devredilecektir. Yayımlanan tüm içeriklerin (metin ve görsel materyaller) telif hakları dergiye aittir. Dergide yayımlanmak üzere kabul edilen makaleler için telif hakkı ya da başka bir ad altında ödeme yapılmaz ve yazar(lar)dan makale işlem ücreti alınmaz; ancak yeniden baskı (reprint) talepleri yazarın sorumluluğundadır.

Bilimsel bilgi ve araştırmalara küresel açık erişimi teşvik etmek amacıyla TÜBA, çevrim içi olarak yayımlanan tüm içeriklerin (aksi belirtilmedikçe) okuyucular, araştırmacılar ve kurumlar tarafından serbestçe kullanılmasına izin vermektedir. Bu kullanım, eserin kaynağının belirtilmesi koşuluyla ve ticari amaç dışında, herhangi bir değişiklik yapılmaksızın Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) Uluslararası Lisansı kapsamında mümkündür. Ticari kullanım için lütfen yayıncı ile iletişime geçiniz.