{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,9]],"date-time":"2025-11-09T03:51:10Z","timestamp":1762660270532,"version":"build-2065373602"},"reference-count":71,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2022,10,17]],"date-time":"2022-10-17T00:00:00Z","timestamp":1665964800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Aalborg Zoo Conservation Foundation","award":["07-21"],"award-info":[{"award-number":["07-21"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>Counting of droppings is often, with great effect, used as an indirect method to monitor the appearance and usage of an area by a population covering longer time spans. However, manual detecting and counting of droppings can be time-consuming and tedious, and with a risk of resulting in course estimations. In this context, we studied the use of imaging from unmanned aerial vehicles (UAVs) as a novel and enhanced tool to estimate the dropping densities and distributions of field foraging Arctic migratory geese, such as pink-footed goose Anser brachyrhynchus and barnacle goose Branta leucopsis. Aided by analysis in geographical information systems (GIS), we sought to detect and use fine-scale changes in the within-field dropping densities to evaluate avoidance distance to selected landscape elements. Data in the form of aerial photos from farmed grassland and pastures were collected in areas adjacent to Limfjorden, Northern Jutland, Denmark. The UAV proved usable for detecting droppings from field foraging geese, but with the applied UAV technology only at a low flying altitude (\u22643 m), which rendered traditional methods for georeferencing inapplicable. A revised protocol for georeferencing of single aerial photos triggered from low altitudes was successfully developed, which was considered suitable for future use. Analyses based on the performed UAV data sampling allowed for an unprecedented fine-scale estimation of distribution patterns of the goose droppings and further for determination of optimal sampling frequencies (\u226412 \u00d7 12 m spacing between photo samples) for calculation of density patterns, which reflected differences in foraging activity of geese across whole fields. Contagious dispersions in dropping densities were detected in the majority of fields indicating local, within-field displacements of the geese, which were illustrated by interpolated heatmaps. Additionally, avoidance distances were assessed for four landscape elements and detected with consistent results for windbreaks (100 m), roads (175 m) and wind turbines (1100 m) throughout the ten surveyed fields.<\/jats:p>","DOI":"10.3390\/sym14102175","type":"journal-article","created":{"date-parts":[[2022,10,18]],"date-time":"2022-10-18T00:31:01Z","timestamp":1666053061000},"page":"2175","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Monitoring Dropping Densities with Unmanned Aerial Vehicles (UAV): An Effective Tool to Assess Distribution Patterns in Field Utilization by Foraging Geese"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8558-9832","authenticated-orcid":false,"given":"Johan H. Funder","family":"Castenschiold","sequence":"first","affiliation":[{"name":"Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers Vej 7H, 9220 Aalborg, Denmark"}]},{"given":"Jonas Beltoft","family":"Gehrlein","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers Vej 7H, 9220 Aalborg, Denmark"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2192-8521","authenticated-orcid":false,"given":"Mads","family":"Bech-Hansen","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers Vej 7H, 9220 Aalborg, Denmark"}]},{"given":"Rune M.","family":"Kallehauge","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers Vej 7H, 9220 Aalborg, Denmark"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4644-8981","authenticated-orcid":false,"given":"Cino","family":"Pertoldi","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers Vej 7H, 9220 Aalborg, Denmark"},{"name":"Aalborg Zoo, M\u00f8lleparkvej 63, 9000 Aalborg, Denmark"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9811-9194","authenticated-orcid":false,"given":"Dan","family":"Bruhn","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers Vej 7H, 9220 Aalborg, Denmark"}]}],"member":"1968","published-online":{"date-parts":[[2022,10,17]]},"reference":[{"key":"ref_1","unstructured":"Madsen, J., Roland, O., and Fox, T. (2015). Indspil Til Forvaltning af Bramg\u00e5s, Aarhus University, DCE\u2014Danish Centre for Environment and Energy."},{"key":"ref_2","unstructured":"Madsen, J., Cottaar, F., Amstrup, O., Asfergi, T., Bak, M., Bakken, J., Frikke, J., Goma, V., Gundersen, O.M., and G\u00fcnther, K. (2016). SVALBARD PINK-FOOTED GOOSE, Aarhus University, DCE\u2014Danish Centre for Environment and Energy."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"851","DOI":"10.1111\/oik.01881","article-title":"Using habitat selection theories to predict the spatiotemporal distribution of migratory birds during stopover\u2014A case study of pink-footed geese Anser brachyrhynchus","volume":"124","author":"Madsen","year":"2015","journal-title":"Oikos"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"755","DOI":"10.1023\/A:1008127702944","article-title":"Effects of wind turbines and other physical elements on field utilization by pink-footed geese (Anser brachyrhynchus): A landscape perspective","volume":"15","author":"Larsen","year":"2000","journal-title":"Landsc. Ecol."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"167","DOI":"10.1007\/s10531-017-1427-4","article-title":"Scale-dependent habitat selection by wintering geese: Implications for landscape management","volume":"27","author":"Harrison","year":"2017","journal-title":"Biodivers. Conserv."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Bech-Hansen, M., Kallehauge, R.M., Bruhn, D., Castenschiold, J.H.F., Gehrlein, J.B., Laubek, B., Jensen, L.F., and Pertoldi, C. (2019). Effect of Landscape Elements on the Symmetry and Variance of the Spatial Distribution of Individual Birds within Foraging Flocks of Geese. Symmetry, 11.","DOI":"10.3390\/sym11091103"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"854","DOI":"10.1111\/brv.12258","article-title":"Agriculture and herbivorous waterfowl: A review of the scientific basis for improved management","volume":"92","author":"Fox","year":"2017","journal-title":"Biol. Rev."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"691","DOI":"10.1111\/j.1600-048X.2008.04440.x","article-title":"The onset of spring and timing of migration in two arctic nesting goose populations: The pink-footed goose Anser bachyrhynchus and the barnacle goose Branta leucopsis","volume":"39","author":"Tombre","year":"2008","journal-title":"J. Avian Biol."},{"key":"ref_9","unstructured":"Bibby, C., Burgess, N., Hill, D., and Mustoe, S. (2000). Bird Census Techniques, Academic Press."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"46","DOI":"10.1093\/auk\/119.1.46","article-title":"Landbird Counting Techniques: Current Practices and an Alternative","volume":"119","author":"Rosenstock","year":"2012","journal-title":"Auk"},{"key":"ref_11","first-page":"369","article-title":"Estimation of Density from Line Transect Sampling of Biological Populations","volume":"144","author":"Burnham","year":"1980","journal-title":"J. R. Stat. Soc. Ser. A"},{"key":"ref_12","first-page":"4","article-title":"Rastende vandfugle i Vadehavet 1980\u20132010","volume":"1","author":"Frikke","year":"2013","journal-title":"Dansk Ornitol. Foren. Tidsskr."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"165","DOI":"10.2981\/0909-6396(2008)14[165:AOTCOW]2.0.CO;2","article-title":"Accuracy of \u2018total counts\u2019 of waterbirds from aircraft in coastal waters","volume":"14","author":"Laursen","year":"2008","journal-title":"Wildlife Biol."},{"key":"ref_14","first-page":"167","article-title":"Rastv\u00f6gel auf Sandinseln im schleswig-holsteinischen Wattenmeer im Mai und September 2012","volume":"135","author":"Kempf","year":"2015","journal-title":"Die Vogelwelt"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"177","DOI":"10.1111\/j.1474-919X.2011.01177.x","article-title":"Fine-scale bird monitoring from light unmanned aircraft systems","volume":"154","author":"Bota","year":"2012","journal-title":"Ibis"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"22574","DOI":"10.1038\/srep22574","article-title":"Precision wildlife monitoring using unmanned aerial vehicles","volume":"6","author":"Hodgson","year":"2016","journal-title":"Sci. Rep."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"241","DOI":"10.1002\/fee.1281","article-title":"Unmanned aircraft systems in wildlife research: Current and future applications of a transformative technology","volume":"14","author":"Christie","year":"2016","journal-title":"Front. Ecol. Environ."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"I","DOI":"10.1071\/WR22006","article-title":"Foreword to the Special Issue on \u201cThe rapidly expanding role of drones as a tool for wildlife research\u201d","volume":"49","author":"Wirsing","year":"2022","journal-title":"Wildl. Res."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"222","DOI":"10.2307\/3676634","article-title":"Relations between Change in Spring Habitat Selection and Daily Energetics of Pink-Footed Geese Anser brachyrhynchus","volume":"16","author":"Madsen","year":"1985","journal-title":"Ornis Scand. (Scandinavian J. Ornithol.)"},{"key":"ref_20","first-page":"460","article-title":"Assessing accuracy of a laser rangefinder in estimating grassland bird density","volume":"31","author":"Ransom","year":"2019","journal-title":"Wildl. Soc. Bull."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"66","DOI":"10.2307\/1368760","article-title":"Habitat use by mountain quail in Northern California","volume":"89","author":"Brennan","year":"1987","journal-title":"Condor"},{"key":"ref_22","first-page":"1015","article-title":"Job-related mortality of wildlife workers in the United States, 1937\u20132000","volume":"31","author":"Sasse","year":"2003","journal-title":"Wildl. Soc. Bull."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"1","DOI":"10.7717\/peerj.1831","article-title":"Evaluation of unmanned aerial vehicle shape, flight path and camera type for waterfowl surveys: Disturbance effects and species recognition","volume":"4","author":"McEvoy","year":"2016","journal-title":"PeerJ"},{"key":"ref_24","unstructured":"Rasmussen, L.-M. (2017). Opt\u00e6llinger af Kolonirugende Fugle pa Fotos Optaget Med Drone Ved SNEUM Engs\u00f8, pa Langli og Holme i Limfjorden Maj 2017, Aarhus University, Institut for Bioscience."},{"key":"ref_25","first-page":"1","article-title":"Evaluation of disturbance effect on geese caused by an approaching unmanned aerial vehicle","volume":"30","author":"Kallehauge","year":"2019","journal-title":"Bird Conserv. Int."},{"key":"ref_26","doi-asserted-by":"crossref","unstructured":"Hong, S.J., Han, Y., Kim, S.Y., Lee, A.Y., and Kim, G. (2019). Application of Deep-Learning Methods to Bird Detection Using Unmanned Aerial Vehicle Imagery. Sensors, 19.","DOI":"10.3390\/s19071651"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"239","DOI":"10.1111\/mam.12046","article-title":"Are unmanned aircraft systems (UASs) the future of wildlife monitoring? A review of accomplishments and challenges","volume":"45","author":"Linchant","year":"2015","journal-title":"Mamm. Rev."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"621","DOI":"10.1007\/s10336-020-01854-w","article-title":"Drone-conducted counts as a tool for the rapid assessment of productivity of Sandwich Terns (Thalasseus sandvicensis)","volume":"162","author":"Valle","year":"2021","journal-title":"J. Ornithol."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"16214","DOI":"10.1002\/ece3.8302","article-title":"Drones, automatic counting tools, and artificial neural networks in wildlife population censusing","volume":"11","author":"Marchowski","year":"2021","journal-title":"Ecol. Evol."},{"key":"ref_30","unstructured":"Hughes, A., Teuten, E., Starnes, T., Cowie, N., Swinfield, T., Humpidge, R., Williams, J., Bridge, D., Casey, C., and Asque, A. (2020). Drones for GIS\u2014Best Practice, version 2."},{"key":"ref_31","first-page":"1","article-title":"A model for automatic geomapping of aerial images mosaic acquired by UAV","volume":"2017","author":"Gotovac","year":"2017","journal-title":"2017 2nd Int. Multidiscip. Conf. Comput. Energy Sci. Split."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"1103","DOI":"10.1111\/2041-210X.13581","article-title":"Automated detection of wildlife using drones: Synthesis, opportunities and constraints","volume":"12","author":"Corcoran","year":"2021","journal-title":"Methods Ecol. Evol."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"201407","DOI":"10.1098\/rsbl.2014.0754","article-title":"Approaching birds with drones: First experiments and ethical guidelines","volume":"11","author":"Vas","year":"2015","journal-title":"Biol. Lett."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"e0178448","DOI":"10.1371\/journal.pone.0178448","article-title":"Unmanned aircraft systems as a new source of disturbance for wildlife: A systematic review","volume":"12","author":"Strebel","year":"2017","journal-title":"PLoS ONE"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"905","DOI":"10.2307\/2402690","article-title":"The Selection of Feeding Site by White-Fronted Geese in Winter","volume":"8","author":"Owen","year":"1971","journal-title":"J. Appl. Ecol."},{"key":"ref_36","unstructured":"Koester, V. (1989). The Ramsar Convention. The Ramsar Convention On the Conservation of Wetlands, Ramsar Convention Bureau International Union for Conservation of Nature and Natural Resources."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"115","DOI":"10.34080\/os.v20.19922","article-title":"Current estimates of goose population sizes in western Europe, a gap analysis and an assessment of trends","volume":"20","author":"Fox","year":"2010","journal-title":"Ornis Svecica"},{"key":"ref_38","unstructured":"Kjeldsen, J.P. (2022, July 10). Nordjyllands Fugle 2017. Available online: http:\/\/nordjyllandsfugle.dk\/."},{"key":"ref_39","unstructured":"(2021, November 01). DJI PHANTOM 4 PRO Specs. Available online: https:\/\/www.dji.com\/dk\/phantom-4-pro\/info#specs."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"3781","DOI":"10.1038\/s41598-020-60543-z","article-title":"Drone Surveys Do Not Increase Colony-wide Flight Behaviour at Waterbird Nesting Sites, But Sensitivity Varies Among Species","volume":"10","author":"Barr","year":"2020","journal-title":"Sci. Rep."},{"key":"ref_41","doi-asserted-by":"crossref","unstructured":"Castenschiold, J.H.F., Bregnballe, T., Bruhn, D., and Pertoldi, C. (2022). Unmanned Aircraft Systems as a Powerful Tool to Detect Fine-Scale Spatial Positioning and Interactions between Waterbirds at High-Tide Roosts. Animals, 12.","DOI":"10.3390\/ani12080947"},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"591","DOI":"10.1093\/biomet\/52.3-4.591","article-title":"An Analysis of Variance Test for Normality (Complete Samples)","volume":"52","author":"Shapiro","year":"1965","journal-title":"Biometrika"},{"key":"ref_43","first-page":"1","article-title":"Bartlett\u2019s Test","volume":"8","author":"Shanks","year":"1986","journal-title":"Work. Pap."},{"key":"ref_44","unstructured":"Davis, J. (2019). Mapping with the Phantom 3 Professional & Pix4Dcapture, Institute for Geographic Information Science, San Francisco State University."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"583","DOI":"10.1080\/01621459.1952.10483441","article-title":"Use of Ranks in One-Criterion Variance Analysis Stable","volume":"47","author":"Kruskal","year":"1952","journal-title":"J. Am. Stat. Assoc."},{"key":"ref_46","unstructured":"Hawkins, S. (2016, January 17\u201320). Using a drone and photogrammetry software to create orthomosaic images and 3D models of aircraft accident sites. Proceedings of the Isasi Seminar, Reykjavik, Iceland."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"347","DOI":"10.1007\/s11633-014-0799-0","article-title":"Automatic georeferencing of images acquired by UAV\u2019s","volume":"11","author":"Hemerly","year":"2014","journal-title":"Int. J. Autom. Comput."},{"key":"ref_48","unstructured":"(2022, April 01). Esri FAQ: What Is the Format of the World File Used for Georeferencing Images?. Available online: https:\/\/support.esri.com\/en\/technical-article\/000002860."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"189","DOI":"10.1214\/ss\/1032280214","article-title":"Bootstrap Confidence Intervals","volume":"11","author":"DiCiccio","year":"1996","journal-title":"Stat. Sci."},{"key":"ref_50","unstructured":"Flater, M.D. (2022, July 10). R Package \u2018bootBCa.\u2019: Function to Find Nonparametric BCa Intervals, Version 1.0, Available online: https:\/\/www.nist.gov\/system\/files\/documents\/itl\/ssd\/cs\/bootBCa-manual.pdf."},{"key":"ref_51","unstructured":"R Development Core Team (2022). R: A Language and Environment for Statistical Computing, R Foundation for Statistical Computing."},{"key":"ref_52","unstructured":"Fowler, J., Cohen, L., and Jarvis, P. (1998). Probabillity Distributions as Models of Dispersion. Practical Statistics for Field Biology, John Wiley & Sons."},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"316","DOI":"10.1080\/00031305.1990.10475751","article-title":"A suggestion for using powerful and informative tests of normality","volume":"44","author":"Belanger","year":"1990","journal-title":"Am. Stat."},{"key":"ref_54","first-page":"227","article-title":"Distribution of the kurtosis statistic b2 for normal statistics","volume":"70","author":"Anscombe","year":"1983","journal-title":"Biometrika"},{"key":"ref_55","unstructured":"(2022, May 22). SDFE Styrelsen for Dataforsyning og Effektivisering. Available online: https:\/\/kortforsyningen.dk\/content\/fot-via-kortforsyningen."},{"key":"ref_56","unstructured":"(2022, July 10). GeoDanmark FOTspecifikation Version 5.1. Available online: http:\/\/geodanmark.nu\/onewebmedia\/DKPDFSpec6-Alt_B4.pdf."},{"key":"ref_57","unstructured":"(2022, March 15). Danish Meteorological Institute (DMI) Rekordv\u00e5d Marts 2019. Available online: https:\/\/www.dmi.dk\/nyheder\/2019\/rekordvaad-marts-2019\/."},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"142","DOI":"10.17221\/12\/2009-SWR","article-title":"Evaluation of crop effects on runoff and washout of soil from the surface of agricultural land","volume":"4","author":"Hejduk","year":"2009","journal-title":"Soil Water Res."},{"key":"ref_59","unstructured":"Harrison, A.L., and Hilton, G.M. (2014). Fine-scale distribution of geese in relation to key landscape elements in coastal Dobrudzha, Bulgaria. Prelim. Rep. WWT Slimbr., 28."},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"884","DOI":"10.2307\/2404959","article-title":"Habitat Choice in Pink-Footed Geese: Quantifying the Constraints Determining Winter Site Use","volume":"33","author":"Gill","year":"1996","journal-title":"J. Appl. Ecol."},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"13","DOI":"10.2981\/0909-6396(2005)11[13:FAEDOS]2.0.CO;2","article-title":"Factors affecting escape distances of staging waterbirds","volume":"11","author":"Laursen","year":"2005","journal-title":"Wildlife Biol."},{"key":"ref_62","unstructured":"Achermann, C. (2012). Vindm\u00f8ller ved Klim Fjordholme, Jammerbugt Kommune."},{"key":"ref_63","doi-asserted-by":"crossref","unstructured":"Biswas, S.R., Xiang, J., and Li, H. (2021). Disturbance Effects on Spatial Autocorrelation in Biodiversity: An Overview and a Call for Study. Diversity, 13.","DOI":"10.3390\/d13040167"},{"key":"ref_64","unstructured":"Rasband, S. (2022, July 10). ImageJ, U.S. National Institutes of Health, Bethesda, Maryland, USA, Available online: https:\/\/imagej.nih.gov\/ij\/."},{"key":"ref_65","unstructured":"Bansemer, S., and Scheel, T. (2022). GSA Image Analyser, GSA GmbH."},{"key":"ref_66","doi-asserted-by":"crossref","first-page":"890","DOI":"10.1111\/2041-210X.13402","article-title":"Fluorescence-based detection of field targets using an autonomous unmanned aerial vehicle system","volume":"11","author":"Kaye","year":"2020","journal-title":"Methods Ecol. Evol."},{"key":"ref_67","doi-asserted-by":"crossref","first-page":"429","DOI":"10.1007\/s00359-004-0507-6","article-title":"Ultraviolet properties of Australian mammal urine","volume":"190","author":"Kellie","year":"2004","journal-title":"J. Comp. Physiol. A Neuroethol. Sens. Neural Behav. Physiol."},{"key":"ref_68","doi-asserted-by":"crossref","first-page":"3629","DOI":"10.1016\/j.watres.2007.03.034","article-title":"Exposing water samples to ultraviolet light improves fluorometry for detecting human fecal contamination","volume":"41","author":"Smith","year":"2007","journal-title":"Water Res."},{"key":"ref_69","unstructured":"Harvey, P. (2022, July 10). ExifTool Tag Names. Available online: http:\/\/owl.phy.queensu.ca\/~phil\/exiftool\/TagNames\/index.html."},{"key":"ref_70","unstructured":"(2022, July 10). Pix4Dcapture Ground Sampling Distance (GSD). Available online: https:\/\/support.pix4d.com\/hc\/en-us\/articles\/202560249-TOOLS-GSD-calculator."},{"key":"ref_71","unstructured":"(2022, July 10). Pix4Dcapture Camera Data Sheet. Available online: https:\/\/www.pix4d.com\/product\/pix4dmapper-photogrammetry-software."}],"container-title":["Symmetry"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2073-8994\/14\/10\/2175\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T00:55:34Z","timestamp":1760144134000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2073-8994\/14\/10\/2175"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,10,17]]},"references-count":71,"journal-issue":{"issue":"10","published-online":{"date-parts":[[2022,10]]}},"alternative-id":["sym14102175"],"URL":"https:\/\/doi.org\/10.3390\/sym14102175","relation":{},"ISSN":["2073-8994"],"issn-type":[{"type":"electronic","value":"2073-8994"}],"subject":[],"published":{"date-parts":[[2022,10,17]]}}}