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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">rmrs</journal-id><journal-title-group><journal-title xml:lang="ru">Научно-технический сборник Российского морского регистра судоходства</journal-title><trans-title-group xml:lang="en"><trans-title>Research Bulletin by Russian Maritime Register of Shipping</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2223-7097</issn><publisher><publisher-name>Российский морской регистр судоходства</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="edn" pub-id-type="custom">FOJTIH</article-id><article-id custom-type="elpub" pub-id-type="custom">rmrs-143</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МОРЕХОДНЫЕ КАЧЕСТВА СУДОВ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SEAWORTHINESS</subject></subj-group></article-categories><title-group><article-title>Построение пространственной аппроксимации набора диаграмм статической остойчивости автономного судна</article-title><trans-title-group xml:lang="en"><trans-title>Construction of a spatial approximation of a set of diagrams of static stability of an autonomous ship</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шульц</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shults</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант </p><p>190121, Санкт-Петербург, Лоцманская ул., 3 </p></bio><bio xml:lang="en"><p>PhD student</p><p>190121, St. Petersburg, Lotsmanskaya ul., 3</p></bio><email xlink:type="simple">svsch9@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кутейников</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuteynikov</surname><given-names>М. А.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д-р техн. наук</p><p>191186, Санкт-Петербург, Миллионная ул., 7А </p></bio><bio xml:lang="en"><p>DSc</p><p>191186, St. Petersburg, Millionnaya ul., 7A </p></bio><email xlink:type="simple">kuteynikov.ma@rs-class.org</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шульц</surname><given-names>В. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Shults</surname><given-names>V. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. физ.-мат. наук</p><p>190121, Санкт-Петербург, Лоцманская ул., 3 </p></bio><bio xml:lang="en"><p>PhD</p><p>190121, St. Petersburg, Lotsmanskaya ul., 3</p></bio><email xlink:type="simple">vysch@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Санкт-Петербургский государственный морской технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>St. Petersburg State Marine Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Российский морской регистр судоходства</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian Maritime Register of Shipping</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>03</day><month>11</month><year>2025</year></pub-date><volume>1</volume><issue>80</issue><fpage>82</fpage><lpage>93</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шульц С.В., Кутейников М.А., Шульц В.Ю., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Шульц С.В., Кутейников М.А., Шульц В.Ю.</copyright-holder><copyright-holder xml:lang="en">Shults S.V., Kuteynikov М.А., Shults V.Y.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://sbornik.rs-class.org/jour/article/view/143">https://sbornik.rs-class.org/jour/article/view/143</self-uri><abstract><p>Актуальность выбранной темы исследования объясняется активным развитием автономного судовождения и необходимостью решения задач, возникающих в процессе эксплуатации морских автономных надводных судов. Разрабатываемая в рамках диссертационного исследования математическая модель экспресс-оценки характеристик качки судна на нерегулярном морском волнении предполагает наличие метода для вычисления плеча остойчивости в зависимости от угла крена и осадки. В данной работе рассмотрены математические методы аппроксимации поверхности, применимые для обработки неравномерно распределенных данных; построены аппроксимации поверхности, образованной набором диаграмм статической остойчивости, соответствующих различным случаям нагрузки масс судна, проведено сравнение полученных результатов. Сделан вывод, что наилучшими для данной задачи аппроксимационными способностями обладают методы, основанные на кубических и бигармонических сплайнах.</p></abstract><trans-abstract xml:lang="en"><p>The relevance of the chosen research topic is explained by the active development of autonomous navigation and the need to solve tasks arising during the operation of marine autonomous surface ships. The mathematical model developed as a part of the research for the operational assessment of ship motion characteristics in irregular seas suggests a method for calculating the righting arm depending on the angle of roll and draft. In this paper, mathematical methods of surface approximation are considered, applicable for processing nonuniformly distributed data; approximations of the surface formed by a set of static stability diagrams corresponding to different cases of vessel mass loading are constructed, and the results obtained are compared. It is concluded that the methods based on cubic and biharmonic splines have the best approximation capabilities for this task.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>автономное судно</kwd><kwd>аппроксимация поверхности</kwd><kwd>бигармонический сплайн</kwd><kwd>кубический сплайн</kwd><kwd>тонкий пластинчатый сплайн</kwd><kwd>диаграмма статической остойчивости</kwd></kwd-group><kwd-group xml:lang="en"><kwd>autonomous vessel</kwd><kwd>surface fitting</kwd><kwd>biharmonic spline</kwd><kwd>cubic spline</kwd><kwd>thin-plate spline</kwd><kwd>static stability diagram</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Kasyk L. The analysis of social and situational systems as components of human errors resulting in navigational accidents / L. Kasyk, A.E. Wolnowska, K. Pleskacz, T. Kapuściński // Applied Sciences. — 2023. — Vol. 13, Issue 11. — P. 6780. — DOI 10.3390/app13116780.</mixed-citation><mixed-citation xml:lang="en">Kasyk L., Wolnowska A.E., Pleskacz K., Kapuściński T. The analysis of social and situational systems as components of human errors resulting in navigational accidents. Applied Sciences. 2023. Vol. 13, Issue 11. P. 6780. DOI 10.3390/app13116780.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Гомзяков М.В. Обзор аварийности морских транспортных судов Дальневосточного региона / М.В. Гомзяков // Научно-технический сборник Российского морского регистра судоходства. — 2020. — № 58/59. — С. 4 — 10.</mixed-citation><mixed-citation xml:lang="en">Gomzyakov M.V. Overview of maritime transport casualties in the Far East. Research Bulletin by Russian Maritime Register of Shipping. 2020. No. 58/59. P. 4 — 10. (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Кутейников М.А. Критерии риска потери остойчивости судна без хода / М.А. Кутейников, В.Р. Самойлов // Научно-технический сборник Российского морского регистра судоходства. — 2019. — № 56/57. — С. 40 — 50.</mixed-citation><mixed-citation xml:lang="en">Kuteinikov M.A., Samoilov V.R. Criteria of risk of stability loss under dead ship condition. Research Bulletin by Russian Maritime Register of Shipping. 2019. No. 56/57. P. 40 — 50. (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Шульц С.В. Обзор применения искусственных нейронных сетей в задачах моделирования качки автономного судна / С.В. Шульц, М.А. Кутейников, В.Ю. Шульц // Научно-технический сборник Российского морского регистра судоходства. — 2025. — № 78. — С. 44 — 50. — EDN UFKSYW.</mixed-citation><mixed-citation xml:lang="en">Shults S.V., Kuteinikov М.А., Shults V.Yu. An overview of application of artificial neural networks in modeling motions of autonomous ship. Research Bulletin by Russian Maritime Register of Shipping. 2025. No. 78. P. 44 — 50. EDN UFKSYW. (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Jimenez-Fernandez V.M. Exploring the use of two-dimensional piecewise-linear functions as an alternative model for representing and processing grayscale-images / V.M. Jimenez-Fernandez, H. Vazquez-Leal, U.A. Filobello-Nino, M. Jimenez-Fernandez et al. // Journal of Applied Research and Technology. — 2016. — Vol. 14, No. 5. — P. 311 — 318. — DOI 10.1016/j.jart.2016.09.001.</mixed-citation><mixed-citation xml:lang="en">Jimenez-Fernandez V.M., Vazquez-Leal H., Filobello-Nino U.A., Jimenez-Fernandez M. et al. Exploring the use of two-dimensional piecewise-linear functions as an alternative model for representing and processing grayscale-images. Journal of Applied Research and Technology. 2016. Vol. 14, No. 5. DOI 10.1016/j.jart.2016.09.001.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Jimenez-Fernandez V.M. A parametric piecewise-linear approach to laser projection / V.M. Jimenez-Fernandez, H.H. Cerecedo-Nunez, H. Vazquez-Leal, L. Beltran-Parrazal et al. // Computational and Applied Mathematics. — 2014. — Vol. 33, Issue 3. — P. 841 — 858.</mixed-citation><mixed-citation xml:lang="en">Jimenez-Fernandez V.M., Cerecedo-Nunez H.H., Vazquez-Leal H., Beltran-Parrazal L. et al. A parametric piecewise-linear approach to laser projection. Computational and Applied Mathematics. 2014. Vol. 33, Issue 3. P. 841 — 858.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Jimenez-Fernandez V.M. A comparative study between piecewise-linear and point-based methodologies for galvanometer mirror systems / V.M. Jimenez-Fernandez, H. Vazquez-Leal, U.A. Filobello-Nino, H.H. Cerecedo-Nunez et al. // Revista Facultad de Ingeniería Universidad de Antioquia. — 2014. — Vol. 73. — P. 124 — 133.</mixed-citation><mixed-citation xml:lang="en">Jimenez-Fernandez V.M., Vazquez-Leal H., Filobello-Nino U., Cerecedo-Nunez H.H. et al. A comparative study between piecewise-linear and point-based methodologies for galvanometer mirror systems. Revista Facultad de Ingeniería Universidad de Antioquia. 2014. Vol. 73. P. 124 — 133.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Zhang Z.G. High-resolution reconstruction of human brain MRI image based on local polynomial regression / Z.G. Zhang, S.C. Chan, X. Zhang, E.Y. Lam et al. // 4th International IEEE/EMBS conference on neural engineering. — 2009. — P. 245 — 248.</mixed-citation><mixed-citation xml:lang="en">Zhang Z.G., Chan S.C., Zhang X., Lam E.Y. et al. High-resolution reconstruction of human brain MRI image based on local polynomial regression. 4th International IEEE/EMBS conference on neural engineering. 2009. P. 245 — 248.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Zhang Z.G. A new two-stage method for restoration of images corrupted by Gaussian and impulse noises using local polynomial regression and edge preserving regularization / Z.G. Zhang, S.C. Chan, Z. Y. Zhu // IEEE international symposium on circuits and systems. — 2009. — P. 948 — 951.</mixed-citation><mixed-citation xml:lang="en">Zhang Z.G., Chan S.C., Zhu Z.Y. A new two-stage method for restoration of images corrupted by Gaussian and impulse noises using local polynomial regression and edge preserving regularization. IEEE international symposium on circuits and systems. 2009. P. 948 — 951.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Karim S.A.A. Cubic spline interpolation for petroleum engineering data / S.A.A. Karim, M.A.M. Rosli, M.I.M. Mustafa // Applied Mathematical Sciences. — 2014. — Vol. 8. — P. 5083 — 5098.</mixed-citation><mixed-citation xml:lang="en">Karim S.A.A., Rosli M.A.M., Mustafa M.I.M. Cubic spline interpolation for petroleum engineering data. Applied Mathematical Sciences. 2014. Vol. 8. P. 5083 — 5098.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Karim S.A.A. Seabed loging data curve fitting using cubic splines / S.A.A. Karim, N. Yahya // Applied Mathematical Sciences. — 2013. — Vol. 7, No. 81. — P. 4015 — 4026.</mixed-citation><mixed-citation xml:lang="en">Karim S.A.A., Yahya N. Seabed loging data curve fitting using cubic splines. Applied Mathematical Sciences. 2013. Vol. 7, No. 81. P. 4015 — 4026.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Ross A. A deformable model for fingerprint matching / A. Ross, S. Dass, A. Jain // Pattern Recognition. — 2005. — Vol. 38. — P. 95 — 103. — DOI 10.1016/j.patcog.2003.12.021.</mixed-citation><mixed-citation xml:lang="en">Ross A., Dass S., Jain A. A deformable model for fingerprint matching. Pattern Recognition. 2005. Vol. 38. P. 95 — 103. DOI 10.1016/j.patcog.2003.12.021.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Бикеев Е.В. Применение методики аппроксимации сплайном типа «тонких пластин» для определения деформаций крупногабаритного рефлектора / Е.В. Бикеев, Г.И. Калабегашвили // Наука и образование сегодня. — 2017. — № 2 (13). — C. 6 — 8.</mixed-citation><mixed-citation xml:lang="en">Bikeev E.V., Kalabegashvili G.I. Primenenie metodiki approksimatsii splainom tipa «tonkikh plastin» dlya opredeleniya deformatsii krupnogabaritnogo rеflektora [Application of the thin-plate spline approximation technique to determine the deformations of a large-sized reflector]. Nauka i obrazovanie segodnya [Science and Education Today]. 2017. No. 2 (13). P. 6 — 8.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Douglas B.C. The sea state correction for GEOS 3 and SEASAT satellite altimeter data / B.C. Douglas, R.W. Agreen // Journal of Geophysical Research. — 1983. — Vol. 88 (C3). — P. 1655 — 1661. — DOI 10.1029/JC088iC03p01655.</mixed-citation><mixed-citation xml:lang="en">Douglas B.C., Agreen R.W. The sea state correction for GEOS 3 and SEASAT satellite altimeter data. Journal of Geophysical Research. 1983. Vol. 88 (C3). P. 1655 — 1661. DOI 10.1029/JC088iC03p01655.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Munchow A. Detiding three-dimensional velocity survey data in coastal waters / A. Munchow // Journal of Atmospheric and Oceanic Technology. — 2000. — Vol. 17, Issue 5. — P. 736 — 748.</mixed-citation><mixed-citation xml:lang="en">Munchow A. Detiding three-dimensional velocity survey data in coastal waters. Journal of Atmospheric and Oceanic Technology. 2000. Vol. 17, Issue 5. P. 736 — 748.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Feliciano L. Biharmonic spline interpolation for solar radiation mapping using Puerto Rico as a case of study / L. Feliciano, E. Ortiz-Rivera // Conference Record of the IEEE Photovoltaic Specialists Conference, 2012. — P. 002913 — 002915. DOI 10.1109/PVSC.2012.6318196.</mixed-citation><mixed-citation xml:lang="en">Feliciano L., Ortiz-Rivera E. Biharmonic spline interpolation for solar radiation mapping using Puerto Rico as a case of study. Conference Record of the IEEE Photovoltaic Specialists Conference. 2012. P. 002913 — 002915. DOI 10.1109/PVSC.2012.6318196.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Дебрин А.С. Разработка программных продуктов по моделированию характеристик фотоэлектрических модулей для повышения эффективности работы ФСЭС автономных потребителей / А.С. Дебрин, А.Ф. Семенов, А.В. Бастрон, П.Н. Кузьмин // Известия ОГАУ. — 2020. — № 3 (83). — C. 222 — 225.</mixed-citation><mixed-citation xml:lang="en">Debrin A.S., Semenov A.F., Bastron A.V., Kuzmin P.N. Development of software products for modeling the characteristics of photovoltaic modules to increase the FSES operation efficiency of autonomous consumers. Izvestia. Orenburg State Agrarian University. 2020. No. 3 (83). P. 222 — 225. (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Amidror I. Scattered data interpolation methods for electronic imaging systems: a survey / I. Amidror // Journal of Electronic Imaging. — 2002. — Vol. 11, No. 2. — P. 157 — 176.</mixed-citation><mixed-citation xml:lang="en">Amidror I. Scattered data interpolation methods for electronic imaging systems: a survey. Journal of Electronic Imaging. 2002. Vol. 11, No. 2. P. 157 — 176.</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Ambrosius F. Interpolation of 3D surfaces for contact modeling / F. Ambrosius // University of Twente Tech. Rep. — March 2005. — 51 p.</mixed-citation><mixed-citation xml:lang="en">Ambrosius F. Interpolation of 3D surfaces for contact modeling. University of Twente Tech. Rep. March 2005. 51 p. 20. Boor C. de. Bicubic spline interpolation. Journal of Mathematics and Physics. 1962. Vol. 41, No. 4. P. 212 — 218. DOI 10.1002/sapm1962411212.</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Boor C. de. Bicubic spline interpolation / C. de Boor // Journal of Mathematics and Physics. — 1962. — Vol. 41, No. 4. — P. 212 — 218. — DOI 10.1002/sapm1962411212.</mixed-citation><mixed-citation xml:lang="en">Bhattacharyya B.K. Bicubic spline interpolation as a method for treatment of potential field data. Geophysics. 1969. Vol. 34. P. 402 — 423. DOI 10.1190/1.1440019.</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Bhattacharyya B.K. Bicubic spline interpolation as a method for treatment of potential field data / B.K. Bhattacharyya // Geophysics. — 1969. — Vol. 34. — P. 402 — 423. — DOI 10.1190/1.1440019.</mixed-citation><mixed-citation xml:lang="en">Briggs I.C. Machine contouring using minimum curvature. Geophysics. 1974. Vol. 39, No. 1. P. 39 — 48. DOI 10.1190/1.1440410.</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Briggs I.C. Machine contouring using minimum curvature / I.C. Briggs // Geophysics. — 1974. — Vol. 39, No. 1. — P. 39 — 48. — DOI 10.1190/1.1440410.</mixed-citation><mixed-citation xml:lang="en">Turley, R. Steven. Cubic interpolation with irregularly-spaced points in Julia 1.4 / Brigham Young University. Faculty Publications. 2018. 2177.</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Turley R. Steven. Cubic interpolation with irregularly-spaced points in Julia 1.4 / R. Steven Turley; Brigham Young University // Faculty Publications. — 2018. — 2177.</mixed-citation><mixed-citation xml:lang="en">Jain R., Kasturi R., Schunck B. Machine Vision. McGraw-Hill, 1995. 549 p.</mixed-citation></citation-alternatives></ref><ref id="cit24"><label>24</label><citation-alternatives><mixed-citation xml:lang="ru">Jain R. Machine Vision / R. Jain, R, Kasturi. B. Schunck. — McGraw-Hill, 1995. — 549 p.</mixed-citation><mixed-citation xml:lang="en">Han X., Han J. Representation of piecewise biharmonic surfaces using biquadratic B-Splines. Journal of Computational and Applied Mathematics. 2015. Vol. 290. P. 403 — 411. DOI 10.1016/j.cam.2015.05.025.</mixed-citation></citation-alternatives></ref><ref id="cit25"><label>25</label><citation-alternatives><mixed-citation xml:lang="ru">Han X. Representation of piecewise biharmonic surfaces using biquadratic B-Splines / X. Han, J. Han // Journal of Computational and Applied Mathematics. — 2015. — Vol. 290. — P. 403 — 411. — DOI 10.1016/j.cam.2015.05.025.</mixed-citation><mixed-citation xml:lang="en">Han X. Representation of piecewise biharmonic surfaces using biquadratic B-Splines / X. Han, J. Han // Journal of Computational and Applied Mathematics. — 2015. — Vol. 290. — P. 403 — 411. — DOI 10.1016/j.cam.2015.05.025.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
