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Heritage, Volume 8, Issue 7 (July 2025) – 43 articles

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39 pages, 4034 KiB  
Article
Three-Dimensional Modeling and AI-Assisted Contextual Narratives in Digital Heritage Education: Course for Enhancing Design Skill, Cultural Awareness, and User Experience
by Yaojiong Yu and Weifeng Hu
Heritage 2025, 8(7), 280; https://doi.org/10.3390/heritage8070280 (registering DOI) - 15 Jul 2025
Abstract
This study introduces an educational framework that merges 3D modeling with AI-assisted narrative interaction to apply digital technology in cultural heritage education, exemplified by an ancient carriage culture. Through immersive tasks and contextual narratives, the course notably improved learners’ professional skills and cultural [...] Read more.
This study introduces an educational framework that merges 3D modeling with AI-assisted narrative interaction to apply digital technology in cultural heritage education, exemplified by an ancient carriage culture. Through immersive tasks and contextual narratives, the course notably improved learners’ professional skills and cultural awareness. Experimental results revealed significant knowledge acquisition among participants post-engagement. Additionally, the user experience improved, with increased satisfaction in the narrative interaction design course. These enhancements led to heightened interest in cultural heritage and deeper knowledge acquisition. Utilizing Norman’s three-layer interaction model, Ryan’s contextual narrative theory, and Falk and Dierking’s museum learning experience model, the study developed a systematic course for multi-sensory design and contextual interaction, confirming the positive impact of multimodal interaction on learning outcomes. This research provides theoretical support for the digital transformation of cultural education and practical examples for educational practitioners and cultural institutions to implement in virtual presentations and online learning. Full article
(This article belongs to the Special Issue Progress in Heritage Education: Evolving Techniques and Methods)
18 pages, 1162 KiB  
Article
Transforming Our World: The Role of Collections in Education for Sustainable Development
by Mar Gaitán, Alejandra Nieto-Villena, Arabella León, Indra Ramírez and Ester Alba
Heritage 2025, 8(7), 279; https://doi.org/10.3390/heritage8070279 (registering DOI) - 15 Jul 2025
Abstract
The TOWCHED project explores how arts and heritage-based educational methodologies can support sustainable development by enhancing key transversal competencies in learners, particularly children and youth. In response to the global challenges outlined in the sustainable development goals (SDGs), this project promotes inclusive and [...] Read more.
The TOWCHED project explores how arts and heritage-based educational methodologies can support sustainable development by enhancing key transversal competencies in learners, particularly children and youth. In response to the global challenges outlined in the sustainable development goals (SDGs), this project promotes inclusive and participatory approaches to education that foster social cohesion, intercultural understanding, and civic engagement. Partnering with museums, TOWCHED develops cross-curricular pedagogical interventions, such as experiential, blended, and collection-mediated learning, that link cultural heritage with contemporary social and environmental concerns. These approaches aim to strengthen creativity, critical thinking, collaboration, and self-awareness. TOWCHED demonstrates that heritage collection-based education can play a vital role in transforming schools and other learning environments into hubs for sustainable, lifelong learning. By embedding cultural expression and heritage into educational practices, the project offers a compelling model for empowering individuals to navigate and shape a more equitable and interconnected world. This paper has two aims. First, we introduce TOWCHED, an interdisciplinary project recently funded by the Horizon Europe program of the European Union to preserve and promote education for sustainability in the heritage context. Second, we introduce a set of tools related to the project. Full article
(This article belongs to the Special Issue Progress in Heritage Education: Evolving Techniques and Methods)
25 pages, 15328 KiB  
Article
Mould Growth Risk for Internal Retrofit Insulation of Heritage-Protected Timber Plank Frame Walls
by Martha Eilertsen Harberg, Silje Kathrin Asphaug and Tore Kvande
Heritage 2025, 8(7), 278; https://doi.org/10.3390/heritage8070278 (registering DOI) - 14 Jul 2025
Viewed by 46
Abstract
A wave of energy efficiency-focused activity has spread across Europe in recent years, with ambitious goals for improving the energy performance of existing buildings through various directives. Among these existing buildings, there are older structures with heritage-protected facades. Some of the protected facades [...] Read more.
A wave of energy efficiency-focused activity has spread across Europe in recent years, with ambitious goals for improving the energy performance of existing buildings through various directives. Among these existing buildings, there are older structures with heritage-protected facades. Some of the protected facades consist of timber plank frame walls, which were common in Norway in the 19th and early 20th centuries. Internal insulation is an option for increasing the energy efficiency of such walls while preserving their protected facades. However, this approach alters the moisture performance of the wall and introduces a potential risk for mould growth, which must be assessed. To better understand the performance of these walls, the sd values of traditional types of building paper have been tested, as timber plank frame walls comprise vertical planks covered in building paper. In addition, the risk of mould growth in timber plank frame walls has been evaluated using the one-dimensional simulation tool WUFI® Pro by modelling the wall with internal retrofitting and varying input parameters. The types of building paper used have a wide range of vapour resistance values (diffusion-equivalent air layer thicknesses, sd values), which range from 0.008 m to 5.293 m. Adding 50 mm of interior insulation generally resulted in a low risk of mould growth, except in cases involving the use of a moisture-adaptive vapour barrier (MAVB). The MAVB did not result in an acceptable mould growth risk in any of the tested scenarios. Full article
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35 pages, 12566 KiB  
Article
Reshaping Museum Experiences with AI: The ReInHerit Toolkit
by Paolo Mazzanti, Andrea Ferracani, Marco Bertini and Filippo Principi
Heritage 2025, 8(7), 277; https://doi.org/10.3390/heritage8070277 (registering DOI) - 14 Jul 2025
Viewed by 48
Abstract
This paper presents the ReInHerit Toolkit, a collection of open-source interactive applications developed as part of the H2020 ReInHerit project. Informed by extensive surveys and focus groups with cultural professionals across Europe, the toolkit addresses key needs in the heritage sector by leveraging [...] Read more.
This paper presents the ReInHerit Toolkit, a collection of open-source interactive applications developed as part of the H2020 ReInHerit project. Informed by extensive surveys and focus groups with cultural professionals across Europe, the toolkit addresses key needs in the heritage sector by leveraging computer vision and artificial intelligence to enrich museum experiences through engaging, personalized interactions that enhance visitor learning. Designed to bridge the technology gap between larger institutions and smaller organizations, the ReInHerit Toolkit also promotes a sustainable, people-centered approach to digital innovation, supported by shared resources, training, and collaborative development opportunities accessible through the project’s Digital Hub. Full article
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29 pages, 7061 KiB  
Article
Does Water Cleaning Mitigate Atmospheric Degradation of Unstable Heritage Glass? An Experimental Study on Glass Models
by Thalie Law, Odile Majérus, Marie Godet, Mélanie Moskura, Thibault Charpentier, Antoine Seyeux and Daniel Caurant
Heritage 2025, 8(7), 276; https://doi.org/10.3390/heritage8070276 (registering DOI) - 14 Jul 2025
Viewed by 136
Abstract
Glass curators often question how their treatments affect the long-term stability of historical glass. While damp cotton swabs are commonly used to remove surface salts and dust, the use of water remains controversial, particularly for heavily altered glass, due to concerns about worsening [...] Read more.
Glass curators often question how their treatments affect the long-term stability of historical glass. While damp cotton swabs are commonly used to remove surface salts and dust, the use of water remains controversial, particularly for heavily altered glass, due to concerns about worsening hydration. This study investigates the effect of water rinsing on an unstable soda-lime glass altered for six months (monoliths) and fifteen months (powders) at 35 °C and 85% relative humidity. Samples were then rinsed with Milli-Q water at 20 °C or 50 °C, and the monolithic glass was subsequently subjected to an additional 15 months of alteration under the same conditions. The glass surface was characterized by optical and scanning electron microscopy (SEM) as well as Raman spectroscopy to identify the nature of the salts. The evolution of the hydrated layer was assessed using transmission FTIR, Raman and solid-state NMR spectroscopies, ToF-SIMS, and thermogravimetric analysis (TGA). The results show that rinsing effectively removes surface salts—primarily sodium carbonate—and induces structural changes in the hydrated layer, promoting silicate network polymerization. Upon resuming alteration, rinsed monolithic samples exhibit no further degradation after the additional 15 months of alteration. These findings offer promising insights for conservation practices and may help curators refining their treatment strategies for altered glass. Full article
(This article belongs to the Special Issue The Conservation of Glass in Heritage Science)
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29 pages, 1042 KiB  
Article
Mapping Geoethical Awareness and Unveiling Environmental Engagement Profiles of Residents in Hellenic UNESCO Global Geoparks: A Quantitative Survey
by Alexandros Aristotelis Koupatsiaris and Hara Drinia
Heritage 2025, 8(7), 275; https://doi.org/10.3390/heritage8070275 - 13 Jul 2025
Viewed by 161
Abstract
Geoethics emphasizes responsible human interaction with the Earth, promoting ethical practices in the geosciences to ensure sustainability for current and future generations. UNESCO Global Geoparks (UGGps) are designated areas that support sustainable development by integrating geoconservation, geoeducation, and community engagement, thereby raising awareness [...] Read more.
Geoethics emphasizes responsible human interaction with the Earth, promoting ethical practices in the geosciences to ensure sustainability for current and future generations. UNESCO Global Geoparks (UGGps) are designated areas that support sustainable development by integrating geoconservation, geoeducation, and community engagement, thereby raising awareness of geological heritage. This quantitative study employed an online questionnaire (n = 798) to assess geoethical awareness among residents of all nine Hellenic UGGps, with the aim of profiling environmental engagement and perceptions. The results indicate a generally high level of geoethical awareness, with Sitia UGGp exhibiting the highest average mean score (M = 8.98, SD = 1.34), reflecting strong community support and effective outreach efforts. In contrast, Lavreotiki UGGp (M = 8.48, SD = 1.15) and Psiloritis UGGp (M = 8.33, SD = 1.36) scored lower in areas such as community engagement and geotourism, suggesting opportunities for targeted improvement. Regional differences suggest that management, visibility, and local context significantly influence public perceptions. Cluster analysis identified four respondent profiles: (a) highly engaged environmental stewards (28.7%), (b) supportive but selective advocates (40.5%), (c) moderately indifferent participants (26.9%), and (d) disengaged or critical respondents (3.9%). Demographic factors such as age, residence, prior visits to Hellenic UGGps, and education significantly differentiated these groups. Mapping geoethical awareness provides a valuable tool for assessing societal benefits and enhancing the governance of UGGps. Overall, the findings underscore the need to shift from an anthropocentric to a more geocentric worldview that prioritizes the well-being of both humanity and Earth’s systems. Full article
(This article belongs to the Section Geoheritage and Geo-Conservation)
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18 pages, 980 KiB  
Article
Perspectives on Amplifying Participation in Museums Through Global Digital Citizenship
by Ann Borda and Jonathan P. Bowen
Heritage 2025, 8(7), 274; https://doi.org/10.3390/heritage8070274 - 11 Jul 2025
Viewed by 250
Abstract
In this paper, we consider the concept of global digital citizenship, particularly as it applies to museums and cultural heritage sectors. In this perspective survey study, we explore current examples of how museums can adjust to the tenets of global digital citizenship that [...] Read more.
In this paper, we consider the concept of global digital citizenship, particularly as it applies to museums and cultural heritage sectors. In this perspective survey study, we explore current examples of how museums can adjust to the tenets of global digital citizenship that are necessary to navigate and participate in increasingly interconnected digital worlds and to collectively address global challenges. This paper provides a qualitative survey and discussion covering issues concerning open foundations, knowledge co-creation, digital equity and inclusion, and participatory innovation. In conclusion, there are untapped opportunities for museums (e.g., through audience participation and digital tools, especially with recent developments in artificial intelligence), but also constraints that must be considered (e.g., lack of funding, digital inequality, and ethical issues related to the use of AI). Full article
(This article belongs to the Section Museum and Heritage)
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25 pages, 4179 KiB  
Article
A Reflection on the Conservation of Waterlogged Wood: Do Original Artefacts Truly Belong in Public Museum Collections?
by Miran Erič, David Stopar, Enej Guček Puhar, Lidija Korat Bensa, Nuša Saje, Aleš Jaklič and Franc Solina
Heritage 2025, 8(7), 273; https://doi.org/10.3390/heritage8070273 - 9 Jul 2025
Viewed by 208
Abstract
The last decade has seen a transformative advancement in computational technologies, enabling the precise creation, evaluation, visualization, and reproduction of high-fidelity three-dimensional (3D) models of archaeological sites and artefacts. With the advent of 3D printing, both small- and large-scale objects can now be [...] Read more.
The last decade has seen a transformative advancement in computational technologies, enabling the precise creation, evaluation, visualization, and reproduction of high-fidelity three-dimensional (3D) models of archaeological sites and artefacts. With the advent of 3D printing, both small- and large-scale objects can now be reproduced with remarkable accuracy and at customizable scales. Artefacts composed of organic materials—such as wood—are inherently susceptible to biological degradation and thus require extensive, long-term conservation employing costly methodologies. These procedures often raise environmental concerns and lead to irreversible alterations in the wood’s chemical composition, dimensional properties, and the intangible essence of the original artefact. In the context of public education and the dissemination of knowledge about historical technologies and objects, 3D replicas can effectively fulfill the same purpose as original artefacts, without compromising interpretative value or cultural significance. Furthermore, the digital data embedded in 3D surface and object models provides a wealth of supplementary information that cannot be captured, preserved, or documented through conventional techniques. Waterlogged wooden objects can now be thoroughly documented in 3D, enabling ongoing, non-invasive scientific analysis. Given these capabilities, it is imperative to revisit the philosophical and ethical foundations of preserving waterlogged wood and to adopt innovative strategies for the conservation and presentation of wooden artefacts. These new paradigms can serve educational, research, and outreach purposes—core functions of contemporary museums. Full article
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13 pages, 2944 KiB  
Article
Milking the Orchil: How the Presence of Goat Milk in the Orchil Dyebath May Affect the Color of Dyed Wool
by Isabella Whitworth, Victor J. Chen and Gregory D. Smith
Heritage 2025, 8(7), 272; https://doi.org/10.3390/heritage8070272 - 9 Jul 2025
Viewed by 207
Abstract
Among the craft recipes for artisans collected in the 4th-century Egyptian documents the Leyden and Stockholm papyri, there is one calling for adding animal milk to orchil for wool dyeing. To understand the rationale for this practice, wool yarns were dyed with and [...] Read more.
Among the craft recipes for artisans collected in the 4th-century Egyptian documents the Leyden and Stockholm papyri, there is one calling for adding animal milk to orchil for wool dyeing. To understand the rationale for this practice, wool yarns were dyed with and without goat milk added to orchil dyebaths, each made using lichens from three different sources. The results showed orchil containing milk dyed yarns a noticeably deeper red hue. The colorants extracted from the dyed yarns were analyzed by liquid chromatography-diode-array-detector-mass spectrometry to assess the relative amounts of nine identifiable orceins. The data showed that the yarns dyed with milk gave extracts exhibiting several fold more α-aminoorcein and α-hydroxyorcein, with only small differences in the other seven. Scanning electron microscopic analysis of a representative pair of dyed yarns showed that milk promoted surface changes in the fiber that may indicate increased cutaneous damage. Hypotheses for the milk’s effects on orchil dyeing were proposed that included the formation of milk–protein complexes with the two enriched orceins that possibly enhanced wool binding and/or better wool uptake of free and/or complexed orceins due to biodegradation of the wool’s surface cuticle caused by microbial growth promoted by the addition of milk. Full article
(This article belongs to the Special Issue Dyes in History and Archaeology 43)
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15 pages, 4108 KiB  
Article
A Multidisciplinary Non-Invasive Approach for the Examination of a Wooden Panel Painting
by Georgia T. Varfi, Spyridoula Farmaki, Georgios P. Mastrotheodoros, Dimitrios A. Exarchos, Anastasios Asvestas, Dimitrios F. Anagnostopoulos and Theodore E. Matikas
Heritage 2025, 8(7), 271; https://doi.org/10.3390/heritage8070271 - 9 Jul 2025
Viewed by 178
Abstract
In this article, a multidisciplinary methodological approach for studying a wooden panel painting is applied. The theoretical framework, within which this research has arisen, is the application of state-of-the-art non-destructive techniques for addressing issues concerning the constituting parts and composing materials of the [...] Read more.
In this article, a multidisciplinary methodological approach for studying a wooden panel painting is applied. The theoretical framework, within which this research has arisen, is the application of state-of-the-art non-destructive techniques for addressing issues concerning the constituting parts and composing materials of the artwork. Hereby, a post-Byzantine icon was studied, which was dated back to 1836. It is a painting executed on a wooden panel, with a decorated wooden frame attached. The artifact was thoroughly investigated through the application of infrared thermography (IRT), multispectral imaging (MSI), and macroscopic X-ray fluorescence spectrometry (MA-XRF). These analyses provided crucial information about the verso of the painting (i.e., the wooden panel and the frame) and allowed for the revelation of important details of the recto of the painting, which were not visible due to the presence of an old, decayed varnish. Additionally, through the detailed mapping of the distribution of various chemical elements on the recto of the painting and the frame, it was possible to identify the materials used and techniques employed. It is therefore shown that, when combined, the non-destructive methodologies in consideration can provide adequate information referring to the materiality and state of preservation of panel paintings, permitting the conservator to proceed to a tailored conservation treatment. Full article
(This article belongs to the Special Issue Recent Progress in Cultural Heritage Diagnostics)
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20 pages, 28340 KiB  
Article
Rockfall Hazard Assessment for Natural and Cultural Heritage Site: Close Vicinity of Rumkale (Gaziantep, Türkiye) Using Digital Twins
by Ugur Mursal, Abdullah Onur Ustaoglu, Yasin Baskose, Ilyas Yalcin, Sultan Kocaman and Candan Gokceoglu
Heritage 2025, 8(7), 270; https://doi.org/10.3390/heritage8070270 - 8 Jul 2025
Viewed by 294
Abstract
This study presents a digital twin–based framework for assessing rockfall hazards at the immediate vicinity of the Rumkale Archaeological Site, a geologically sensitive and culturally significant location in southeastern Türkiye. Historically associated with early Christianity and strategically located along the Euphrates, Rumkale is [...] Read more.
This study presents a digital twin–based framework for assessing rockfall hazards at the immediate vicinity of the Rumkale Archaeological Site, a geologically sensitive and culturally significant location in southeastern Türkiye. Historically associated with early Christianity and strategically located along the Euphrates, Rumkale is a protected heritage site that attracts increasing numbers of visitors. Here, high-resolution photogrammetric models were generated using imagery acquired from a remotely piloted aircraft system and post-processed with ground control points to produce a spatially accurate 3D digital twin. Field-based geomechanical measurements including discontinuity orientations, joint classifications, and strength parameters were integrated with digital analyses to identify and evaluate hazardous rock blocks. Kinematic assessments conducted in the study revealed susceptibility to planar, wedge, and toppling failures. The results showed the role of lithological structure, active tectonics, and environmental factors in driving slope instability. The proposed methodology demonstrates effective use of digital twin technologies in conjunction with traditional geotechnical techniques, offering a replicable and non-invasive approach for site-scale hazard evaluation and conservation planning in heritage contexts. This work contributes to the advancement of interdisciplinary methods for geohazard-informed management of cultural landscapes. Full article
(This article belongs to the Special Issue Geological Hazards and Heritage Safeguard)
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12 pages, 4524 KiB  
Technical Note
Technical Note: Blue and White Light RTI for Imaging Micro-Features on Glass Surfaces
by Sarah Barack, E. Keats Webb and Jessica Walthew
Heritage 2025, 8(7), 269; https://doi.org/10.3390/heritage8070269 - 8 Jul 2025
Viewed by 173
Abstract
Cooper Hewitt, Smithsonian Design Museum, in partnership with the Museum Conservation Institute, investigated the use of Reflectance Transformation Imaging (RTI) with visible and blue light to assess micro-scale details on glass surfaces. The image sets were captured using a bespoke RTI dome, which [...] Read more.
Cooper Hewitt, Smithsonian Design Museum, in partnership with the Museum Conservation Institute, investigated the use of Reflectance Transformation Imaging (RTI) with visible and blue light to assess micro-scale details on glass surfaces. The image sets were captured using a bespoke RTI dome, which greatly facilitates the repeatability of the process. Our tests suggest that if conducted with care, this technique allows tracking and comparison across time of the continued deterioration of crizzled glass. This technical note introduces the project, addresses challenges, and discusses results in order to provide guidance to others looking to replicate a similar protocol. Full article
(This article belongs to the Special Issue The Conservation of Glass in Heritage Science)
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27 pages, 14404 KiB  
Article
The Spatiality of the Vernacular Courtyard House in the Arabian Gulf Region
by Asmaa Saleh AL-Mohannadi and Raffaello Furlan
Heritage 2025, 8(7), 268; https://doi.org/10.3390/heritage8070268 - 8 Jul 2025
Viewed by 359
Abstract
In the vernacular architectural history of the Arabian Gulf region (the Gulf), the courtyard house is a common domestic typology. Islamic and sociological precepts regulate the design and the function of vernacular courtyard dwellings, resulting in homogeneity and harmony in the entire urban [...] Read more.
In the vernacular architectural history of the Arabian Gulf region (the Gulf), the courtyard house is a common domestic typology. Islamic and sociological precepts regulate the design and the function of vernacular courtyard dwellings, resulting in homogeneity and harmony in the entire urban fabric of historic settlements. In this research endeavor, the aim is to investigate the degree to which the shaping of the spatial form in a sample of vernacular courtyard houses in the Gulf inscribes socio-cultural factors. It sheds light on visibility graph analysis, human behavior, and the system of activities in the domestic space. As a hypothesis, visibility and connectivity analysis could prove the existence of common spatial patterns among courtyards in the vernacular courtyard houses of the Gulf, attributing it to the similar socio-cultural context, the climatic effect, and the architectural and construction knowledge of the region. This study utilizes a collection of courtyard houses from the Gulf as a pilot study to investigate the emerging patterns in the spatial analysis and room layout, or in the distribution of activities or functions in the domestic space. It, therefore, offers a visual analysis (VGA) of six regional courtyard houses from each Gulf country that were built during the period 1850–1950. This study anticipates an affirmation of a direct inscription of socio-cultural factors in the spatial form of the courtyard house in the Gulf. Conclusively, a sustainable, organic linkage between architecture and society exists where the three criteria of housing spatial form, socio-cultural factors, and system of activities interact. Full article
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14 pages, 814 KiB  
Article
Exploring Cognitive Variability in Interactive Museum Games
by George E. Raptis
Heritage 2025, 8(7), 267; https://doi.org/10.3390/heritage8070267 - 7 Jul 2025
Viewed by 198
Abstract
Understanding how cognitive differences shape visitor behavior in digital heritage experiences is essential for designing inclusive and engaging museum technologies. This study explores the relationship between cognitive level and interaction behavior, affective responses, and sensor-based engagement using a publicly available dataset from a [...] Read more.
Understanding how cognitive differences shape visitor behavior in digital heritage experiences is essential for designing inclusive and engaging museum technologies. This study explores the relationship between cognitive level and interaction behavior, affective responses, and sensor-based engagement using a publicly available dataset from a digital museum game. Participants (N = 1000) were categorized into three cognitive levels (Early, Developing, and Advanced), and their data were analyzed across three domains: user interaction behavior, affective and performance states, and sensor-based interaction measures. Our findings suggest that sensor-level interactions are more sensitive indicators of cognitive differences than observable behavior or inferred affect. This work contributes to the heritage HCI field by highlighting the potential for cognitively adaptive systems that personalize the museum experience in real-time, enhancing accessibility, engagement, and learning in cultural settings. Full article
(This article belongs to the Section Digital Heritage)
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21 pages, 1679 KiB  
Article
Image-Based POI Identification for Mobile Museum Guides: Design, Implementation, and User Evaluation
by Bashar Egbariya, Rotem Dror, Tsvi Kuflik and Ilan Shimshoni
Heritage 2025, 8(7), 266; https://doi.org/10.3390/heritage8070266 - 6 Jul 2025
Viewed by 145
Abstract
Indoor positioning remains a significant challenge, particularly in environments such as museums, where the installation of specialized positioning infrastructure may be impractical. Recent advances in image processing offer effective and precise methods for object recognition, presenting a viable alternative. This study explores the [...] Read more.
Indoor positioning remains a significant challenge, particularly in environments such as museums, where the installation of specialized positioning infrastructure may be impractical. Recent advances in image processing offer effective and precise methods for object recognition, presenting a viable alternative. This study explores the feasibility of employing real-time image processing techniques for identifying points of interest (POIs) within museum settings. It outlines the ideation, design, development, and evaluation of an image-based POI identification system implemented in a real-world environment. To evaluate the system’s effectiveness, a user study was conducted with regular visitors at the Hecht Museum. The results showed that the algorithm successfully and quickly identified POIs in 97.6% of cases. Additionally, participants completed the System Usability Scale (SUS) and provided open-ended feedback, indicating high satisfaction with the system’s accuracy and speed while also offering suggestions for future improvements. Full article
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33 pages, 20725 KiB  
Article
Data Quality, Semantics, and Classification Features: Assessment and Optimization of Supervised ML-AI Classification Approaches for Historical Heritage
by Valeria Cera, Giuseppe Antuono, Massimiliano Campi and Pierpaolo D’Agostino
Heritage 2025, 8(7), 265; https://doi.org/10.3390/heritage8070265 - 4 Jul 2025
Viewed by 210
Abstract
In recent years, automatic segmentation and classification of data from digital surveys have taken a central role in built heritage studies. However, the application of Machine and Deep Learning (ML and DL) techniques for semantic segmentation of point clouds is complex in the [...] Read more.
In recent years, automatic segmentation and classification of data from digital surveys have taken a central role in built heritage studies. However, the application of Machine and Deep Learning (ML and DL) techniques for semantic segmentation of point clouds is complex in the context of historic architecture because it is characterized by high geometric and semantic variability. Data quality, subjectivity in manual labeling, and difficulty in defining consistent categories may compromise the effectiveness and reproducibility of the results. This study analyzes the influence of three key factors—annotator specialization, point cloud density, and sensor type—in the supervised classification of architectural elements by applying the Random Forest (RF) algorithm to datasets related to the architectural typology of the Franciscan cloister. The main innovation of the study lies in the development of an advanced feature selection technique, based on multibeam statistical analysis and evaluation of the p-value of each feature with respect to the target classes. The procedure makes it possible to identify the optimal radius for each feature, maximizing separability between classes and reducing semantic ambiguities. The approach, entirely in Python, automates the process of feature extraction, selection, and application, improving semantic consistency and classification accuracy. Full article
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25 pages, 11068 KiB  
Article
Use of Alkali in Traditional Dyeing Technologies with Plants
by Anete Karlsone and Jorens Kviesis
Heritage 2025, 8(7), 264; https://doi.org/10.3390/heritage8070264 - 4 Jul 2025
Viewed by 347
Abstract
Ethnographic sources provide information about several dye plants that produced reddish colors; however, there is no information on how this process is accomplished. Combining information from written sources with the results of dyeing experiments enables a deeper understanding of the dyeing methods employed [...] Read more.
Ethnographic sources provide information about several dye plants that produced reddish colors; however, there is no information on how this process is accomplished. Combining information from written sources with the results of dyeing experiments enables a deeper understanding of the dyeing methods employed in the past. This paper gives insight into the effect of using alkali on obtaining reddish tones in dyeing with Potentilla erecta and Rumex sp. In dyeing experiments, wool yarn was dyed with plant extracts, and the chemical compositions were studied both in plant extracts and in extracts obtained from wool after dyeing. As a result, the red/red-brown color is obtained only under the influence of alkali. Analytical studies of procyanidin (PC) extracts from rhizomes and yarns were performed using infrared spectroscopy (FTIR-ATR) and liquid chromatography coupled with mass spectrometric detection (LC-DAD-MS). Procyanidin extracts of P. erecta and R. acetosa contained monomers identified as (+)-catechin and (-)-epicatechin, as well as dimeric procyanidins of type-A (m/z 575 [M−H]) and type-B (m/z 577 [M−H]), along with various types of trimers (m/z 865 [M−H]; m/z 863 [M−H]), which were also isolated from dyed wool yarns with a similar composition. The conducted research on the use of alkali with tannin-containing plants contributes to deepening our understanding of the perception of color that existed in the ancient rural environment. Full article
(This article belongs to the Special Issue Dyes in History and Archaeology 43)
22 pages, 5266 KiB  
Article
Preserving Modern Heritage in the Emirate of Dubai: A Digital Documentation and Semantic HBIM Approach
by Abeer Abu Raed, Wido Quist and Uta Pottgiesser
Heritage 2025, 8(7), 263; https://doi.org/10.3390/heritage8070263 - 4 Jul 2025
Viewed by 370
Abstract
The rapid urbanization and technological advancements in the United Arab Emirates (UAE) have placed its modern architectural heritage from the 1970s and 1980s at increasing risk of being unrecognized and lost, particularly in Dubai following the discovery of oil. This research addresses the [...] Read more.
The rapid urbanization and technological advancements in the United Arab Emirates (UAE) have placed its modern architectural heritage from the 1970s and 1980s at increasing risk of being unrecognized and lost, particularly in Dubai following the discovery of oil. This research addresses the critical need for the documentation and heritage representation of Dubai’s modern heritage, a city undergoing rapid transformation within a globalized urban landscape. Focusing on the Nasser Rashid Lootah Building (Toyota Building), an iconic early 1970s residential high-rise representing the modern architecture of Dubai and a significant milestone in its architectural history, this study explores a replicable and cost-effective approach to digitally document and conserve urban heritage under threat. The existing building was meticulously documented and analyzed to highlight its enduring value within the fast-changing urban fabric. Through the innovative combination of drone photography, ground-based photography, and HBIM, a high-resolution 3D model and a semantically organized HBIM prototype were generated. This research demonstrates a replicable measure for identifying architectural values, understanding modernist design typologies, and raising local community awareness about Dubai’s modern heritage. Ultimately, this study contributes toward developing recognition criteria and guiding efforts in documenting modern high-rise buildings as vital heritage worthy of recognition, documentation, and future conservation in the UAE. Full article
(This article belongs to the Topic 3D Documentation of Natural and Cultural Heritage)
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13 pages, 1836 KiB  
Article
Cultural Play at a Distance: Post-COVID Serious Heritage Games
by Susannah Emery and Erik Malcolm Champion
Heritage 2025, 8(7), 262; https://doi.org/10.3390/heritage8070262 - 4 Jul 2025
Viewed by 254
Abstract
The COVID-19 pandemic introduced new challenges for the Galleries, Libraries, Archives, and Museums (GLAM) sector, including drastically reduced visitation, constrained funding, and pressure to increase the amount and richness of digital rather than physical interaction. The authors draw upon explorative projects to examine [...] Read more.
The COVID-19 pandemic introduced new challenges for the Galleries, Libraries, Archives, and Museums (GLAM) sector, including drastically reduced visitation, constrained funding, and pressure to increase the amount and richness of digital rather than physical interaction. The authors draw upon explorative projects to examine the potential of serious games, augmented and virtual reality, and community-led design to address GLAM sector challenges raised by COVID-19. The initial findings suggest that while digital heritage projects often suffer from limited interactivity and accessibility, participatory game design and low-cost XR (extended reality) tools can enhance engagement and learning. The article concludes that open-ended, collaborative, and context-aware game frameworks offer a promising path for GLAM institutions to sustain relevance, support digital literacy, and adapt to post-pandemic challenges. Full article
(This article belongs to the Section Digital Heritage)
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21 pages, 7417 KiB  
Article
A Study on the Degradation of Iron Gall Inks and to Preserve Them Using Green Approaches
by Natércia Teixeira, Paula Nabais, Vanessa Otero, Rafael Javier Díaz Hidalgo, Matteo Ferretti, Maurizio Licchelli and Maria J. Melo
Heritage 2025, 8(7), 261; https://doi.org/10.3390/heritage8070261 - 3 Jul 2025
Viewed by 297
Abstract
Inks from the 12th to the 17th century were aged, and a multi-analytical approach was used for their identification based on HPLC–DAD–MS, microFTIR, and microRaman. Colorimetry analysis was also performed. After 6 years of application on filter paper, three inks were selected to [...] Read more.
Inks from the 12th to the 17th century were aged, and a multi-analytical approach was used for their identification based on HPLC–DAD–MS, microFTIR, and microRaman. Colorimetry analysis was also performed. After 6 years of application on filter paper, three inks were selected to be cleaned using a novel green approach based on a chemically crosslinked gel to remove unwanted materials from the ink surface. A Braga ink produced in 2018 was also tested. Two degradation products were identified; iron sulfate was the main degradation product in the Braga ink. For Montpellier, Guadalupe, and QI.8 inks, the main degradation product was a complex of iron with ellagic acid. These compounds were accurately confirmed using microFTIR. Several tests were performed to clean these degradation products with the gels. The Braga ink was cleaned with 10% ethanol in water, which was included in the gel, and the iron sulfate was removed within 15 s of application. On the other hand, the complex of iron with ellagic acid demanded longer application times; we used 2 min and repeated the application until the compound was removed. The novelty of this research has practical implications for the conservation of historical documents and artworks. Full article
(This article belongs to the Special Issue Deterioration and Conservation of Ancient Writing Supports)
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32 pages, 29621 KiB  
Article
A Comparison of the Fading of Dyestuffs as Textile Colourants and Lake Pigments
by Jo Kirby and David Saunders
Heritage 2025, 8(7), 260; https://doi.org/10.3390/heritage8070260 - 3 Jul 2025
Viewed by 447
Abstract
Dyed wool samples and lake pigments prepared from the same dyestuffs were exposed to light over the course of 14 months. Brazilwood or sappanwood, cochineal, madder, and weld were used for both wools and pigments, with the addition of dyer’s broom, indigo, and [...] Read more.
Dyed wool samples and lake pigments prepared from the same dyestuffs were exposed to light over the course of 14 months. Brazilwood or sappanwood, cochineal, madder, and weld were used for both wools and pigments, with the addition of dyer’s broom, indigo, and tannin-containing black dyes for the wools and eosin for the pigments. The wools were dyed within the MODHT European project on historic tapestries (2002–2005), using recipes derived from fifteenth- to seventeenth-century sources. The pigments were prepared according to European recipes of the same period, or using late nineteenth-century French or English recipes. Colour measurements made throughout the experiment allowed for overall colour difference (ΔE00) to be tracked and half-lives to be calculated for some of the colour changes. Alterations in the samples’ hue and chroma were also monitored, and spectral information was collected. The results showed that, for both textiles and pigments, madder is the most stable red dye, followed by cochineal, and then brazilwood. Eosin was the most fugitive sample examined. Comparisons of textile and lake samples derived from the same dyestuff, whether red or yellow, indicate that the colourants are more stable when used as textile dyes than in analogous lake pigments. Full article
(This article belongs to the Special Issue Dyes in History and Archaeology 43)
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28 pages, 4519 KiB  
Article
HBIM-Based Multicriteria Method for Assessing Internal Insulation in Heritage Buildings
by Angelo Massafra, Luca Mattioli, Iuliia Kozlova, Cecilia Mazzoli, Giorgia Predari and Riccardo Gulli
Heritage 2025, 8(7), 259; https://doi.org/10.3390/heritage8070259 - 1 Jul 2025
Viewed by 290
Abstract
Energy retrofitting of historic buildings presents complex challenges, particularly when using internal insulation strategies. While such interventions can enhance thermal comfort and reduce energy demand, they can also pose risks of condensation and mold formation, thereby reducing usable space. This paper proposes an [...] Read more.
Energy retrofitting of historic buildings presents complex challenges, particularly when using internal insulation strategies. While such interventions can enhance thermal comfort and reduce energy demand, they can also pose risks of condensation and mold formation, thereby reducing usable space. This paper proposes an evaluation methodology for assessing the performance of internal insulating panels within a multicriteria framework to support decision-making during the design phase. The approach, scalable to various contexts, is grounded in a digital workflow that integrates heritage building information modeling (HBIM), visual programming (VP), and building energy modeling (BEM) to create a decision-support tool for renovation designers. The methodology, tested on a building located in Bologna (Italy), allows for assessing internal insulation systems with varying thermophysical properties and performance characteristics, and evaluating how they affect space- and wall-level key performance indicators, including condensation risk, energy efficiency improvement, and usable space reduction. The research was conducted under the Horizon Europe HERIT4AGES project, which aims to develop reversible, innovative insulation panels fabricated from local and recycled materials for historic building retrofitting. Full article
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26 pages, 28926 KiB  
Article
Large Terrace Structure Unearthed in the Heart of the City Zone of Īśānapura: Could It Be the ‘Great Hall’ Described in the Book of Sui?
by Shimoda Ichita, Chan Vitharong and Chhum Menghong
Heritage 2025, 8(7), 258; https://doi.org/10.3390/heritage8070258 - 1 Jul 2025
Viewed by 192
Abstract
The archaeological complex of Sambor Prei Kuk is identified with Īśānapura, the capital of the Chenla Kingdom in the early 7th century, a political predecessor to the Angkor Empire. Previous studies have largely focused on the eastern temple zone, where numerous Hindu religious [...] Read more.
The archaeological complex of Sambor Prei Kuk is identified with Īśānapura, the capital of the Chenla Kingdom in the early 7th century, a political predecessor to the Angkor Empire. Previous studies have largely focused on the eastern temple zone, where numerous Hindu religious structures are concentrated, while the western moated city area—presumably the core of urban and political activity—has remained underexplored. This paper presents the results of recent archaeological excavations at a large central mound within the city zone, which is hypothesized to have functioned as a key administrative facility. The excavation revealed a large-scale and uniquely configured terraced structure, unprecedented within the site, and radiocarbon dating suggests its construction dates from the mid 6th to mid 7th century. Notably, a Chinese historical source from the same period, the Book of Sui, describes a “Great Hall” in Īśānapura where the king administered state affairs. The characteristics and spatial context of the excavated structure suggest a possible correspondence with this account. In addition, LiDAR-derived topographic data identified multiple linear and structural features extending eastward from the mound, indicating that it may have stood at the rear of a more extensive administrative compound. These findings offer new insights into the urban structure of Īśānapura and the political architecture of early Khmer civilization. Full article
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22 pages, 9241 KiB  
Article
Identification of Shellfish Blue on an Ancient Egyptian (Dynasty XVIII) Painted Votive Textile
by Jennifer Poulin, Margaret-Ashley Veall and Chris Paulocik
Heritage 2025, 8(7), 257; https://doi.org/10.3390/heritage8070257 - 1 Jul 2025
Viewed by 447
Abstract
In 1906, Charles T. Currelly participated in excavations at Deir el-Bahri, Egypt, recovering votive offerings from the Temple of Hathor (Dynasty XVIII, reign of Hatshepsut, 1479–1458 BCE). These objects became part of the founding collection of the Royal Ontario Museum, where Currelly served [...] Read more.
In 1906, Charles T. Currelly participated in excavations at Deir el-Bahri, Egypt, recovering votive offerings from the Temple of Hathor (Dynasty XVIII, reign of Hatshepsut, 1479–1458 BCE). These objects became part of the founding collection of the Royal Ontario Museum, where Currelly served as the first director. Among the offerings are several paintings on linen cloth. During examination of one painted textile, a border fringe with cream (suspected undyed), yellow and blue looped threads was sampled and analysed for dyes using gas chromatography–mass spectrometry. The yellow threads were found to contain a tannin-rich dyestuff, likely derived from Rhus spp., a common dye in ancient Egypt. Unexpectedly, the blue threads yielded brominated-indigoid marker compounds, indicating the use of a Murex-derived dye. While purple shellfish dye is rare due to the high cost of its complex production, blue shellfish dye is even more exceptional and has only been identified a handful of times on archaeological textiles. Calculated values of di-brominated to mono-brominated indigoid compounds suggests the dye originated from an indigotin-rich type of Hexaplex trunculus snail, a Mediterranean species. This finding represents a rare example of blue shellfish dye use in ancient Egypt and provides new insights into the dyeing technologies of Dynasty XVIII and the importance of this sky-blue colour in the worship of the goddess Hathor. Full article
(This article belongs to the Special Issue Dyes in History and Archaeology 43)
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18 pages, 5098 KiB  
Review
Echoes of the Past: Drowned Forests and Indigenous Cultural Connections in Inundated Coastal Landscape
by Ingrid Ward, David R. Guilfoyle and Doc (Ronald) Reynolds
Heritage 2025, 8(7), 256; https://doi.org/10.3390/heritage8070256 - 28 Jun 2025
Viewed by 514
Abstract
Subfossil trees in growth position and their associated organic sediments serve as valuable archives of past ecologies, shedding light on coastal forest responses to post-Glacial sea-level rise. This paper offers an overview of the significance of drowned forests as both ecological and cultural [...] Read more.
Subfossil trees in growth position and their associated organic sediments serve as valuable archives of past ecologies, shedding light on coastal forest responses to post-Glacial sea-level rise. This paper offers an overview of the significance of drowned forests as both ecological and cultural records, with particular emphasis on Australian Indigenous connections to these landscapes. Indigenous use of and cultural connections to coastal trees and forests in Australian contexts are outlined, along with an overview of the formation and preservation processes of submerged forests and the methodological approaches used to study them. Case studies from across Australia illustrate the diversity of these records and their relevance to both science and heritage. The paper highlights the need for a regional database of subfossil trees and peats and underscores the importance of integrating Indigenous and scientific knowledge systems to deepen our understanding of environmental and cultural change. Full article
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26 pages, 12914 KiB  
Article
Copy/Past: A Hauntological Approach to the Digital Replication of Destroyed Monuments
by Giovanni Lovisetto
Heritage 2025, 8(7), 255; https://doi.org/10.3390/heritage8070255 - 27 Jun 2025
Viewed by 473
Abstract
This article offers a critical analysis of two ‘replicas’ of monuments destroyed by ISIL in 2015: the Institute for Digital Archaeology’s Arch of Palmyra (2016) and the lamassu from Nimrud, exhibited in the Rinascere dalle Distruzioni exhibition (2016). Drawing on Jacques Derrida’s formulation [...] Read more.
This article offers a critical analysis of two ‘replicas’ of monuments destroyed by ISIL in 2015: the Institute for Digital Archaeology’s Arch of Palmyra (2016) and the lamassu from Nimrud, exhibited in the Rinascere dalle Distruzioni exhibition (2016). Drawing on Jacques Derrida’s formulation of hauntology and Umberto Eco’s theory of forgery, this study examines the ontological, ethical, and ideological stakes of digitally mediated replication. Rather than treating digital and physical ‘copies’ as straightforward reproductions of ancient ‘originals’, the essay reframes them as specters: material re-appearances haunted by loss, technological mediation, and political discourses. Through a close analysis of production methods, rhetorical framings, media coverage, and public reception, it argues that presenting such ‘replicas’ as faithful restorations or acts of cultural resurrection collapses a hauntological relationship into a false ontology. The article thus shows how, by concealing the intermediary, spectral role of digital modeling, such framings enable the symbolic use of these ‘replicas’ as instruments of Western technological triumphalism and digital colonialism. This research calls for a critical approach that recognizes the ontological peculiarities of such replicas, foregrounds their reliance on interpretive rather than purely mechanical processes, and acknowledges the ideological weight they carry. Full article
(This article belongs to the Special Issue Past for the Future: Digital Pathways in Cultural Heritage)
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15 pages, 890 KiB  
Article
Understanding the Mediating Role of Gastronomic Experiences in a World Heritage Site: An Explanatory Approach to the Case of Córdoba (Spain)
by Laura Ortega-Pérez, Cándida María Domínguez-Valerio, Consolación Pascual-García and María del Rosario Ruiz-Robles
Heritage 2025, 8(7), 254; https://doi.org/10.3390/heritage8070254 - 27 Jun 2025
Viewed by 306
Abstract
Gastronomy is an essential element in the visitor’s experience in a given destination, being even more important in those destinations with an important cultural heritage. The study focused on the city of Córdoba (Spain), known for its extensive cultural heritage and for being [...] Read more.
Gastronomy is an essential element in the visitor’s experience in a given destination, being even more important in those destinations with an important cultural heritage. The study focused on the city of Córdoba (Spain), known for its extensive cultural heritage and for being the city with the most World Heritage declarations in the world, with four of them. Based on a total of 467 valid questionnaires, a structural equation analysis (PLS-SEM) was carried out. Of a total of four hypotheses proposed, the influence of all of them was confirmed except for the one that hypothesized an influence of perceived gastronomic value on loyalty to a gastronomic destination, thus confirming the overall mediating effect of gastronomic experiences between the two variables mentioned above. Furthermore, the influence of gastronomic satisfaction on loyalty to a gastronomic destination was evident, with no mediating effect of gastronomic experiences in this case. The results obtained can be of great help to decision-makers, both public and private, in establishing gastronomic proposals that are genuine, sensorially rich, and strongly culturally rooted, thus enhancing the cultural experience. Full article
(This article belongs to the Section Cultural Heritage)
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20 pages, 12006 KiB  
Article
An Archaeometric Study of Twelve Porcelain Chinese Sherds Found at the Santana Convent in Lisbon—16th to 18th Centuries
by Luís F. Vieira Ferreira, Isabel Ferreira Machado, Rosa Varela Gomes, Mário Varela Gomes and Manuel F. C. Pereira
Heritage 2025, 8(7), 253; https://doi.org/10.3390/heritage8070253 - 26 Jun 2025
Viewed by 285
Abstract
Twelve sherds of blue-and-white Chinese porcelains recovered from archaeological excavations in the Santana Convent (Ming and Qing Dynasties) in Lisbon were studied using several non-invasive spectroscopies, namely micro-Raman, X-ray Fluorescence (XRF), Ground State Diffuse Reflectance (GSDR), and stereomicroscopy. The use of the X-ray [...] Read more.
Twelve sherds of blue-and-white Chinese porcelains recovered from archaeological excavations in the Santana Convent (Ming and Qing Dynasties) in Lisbon were studied using several non-invasive spectroscopies, namely micro-Raman, X-ray Fluorescence (XRF), Ground State Diffuse Reflectance (GSDR), and stereomicroscopy. The use of the X-ray diffraction technique (XRD) allowed us to complete the mineralogical characterization of the ceramic bodies and glazes of the porcelains. The sample selection ranges from the 16th to the 18th centuries. The micro-Raman spectra clearly showed two types of glazes, alkaline glaze and calcium-based glaze. The GSDR absorption spectra of the blue glazes point to the use of different cobalt pigments, but a strong dependence on the glaze type does not seem to exist. The kilns where the porcelains were produced also play an important role. Both the GSDR absorption and the micro-Raman spectroscopies allow us to differentiate the Iranian blue pigment from the Chinese pigment. A direct and simple correlation between the use of Iranian blue pigment, mixtures of Iranian and Chinese pigments, or simply Chinese pigments and the stylistic dating of each sample was established. Furthermore, several important spectroscopic characterizations could be achieved in this study. Full article
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13 pages, 254 KiB  
Article
Risk, Uncertainty, and Resiliency in the Face of Ancient Climate Change: The Case for Legumes
by Jacob C. Damm
Heritage 2025, 8(7), 252; https://doi.org/10.3390/heritage8070252 - 26 Jun 2025
Viewed by 741
Abstract
Continuing improvements in our understanding of ancient climate change renders it necessary to expand our toolkit for exploring human responses to climatic shifts. Currently, archaeological methods for exploring the resilience of ancient human agricultural systems—in addition to strategies for managing risk and/or uncertainty—are [...] Read more.
Continuing improvements in our understanding of ancient climate change renders it necessary to expand our toolkit for exploring human responses to climatic shifts. Currently, archaeological methods for exploring the resilience of ancient human agricultural systems—in addition to strategies for managing risk and/or uncertainty—are frustratingly limited in comparison to the rich ethnographic record of how humans have navigated climatic stressors. This article proposes that legumes might provide a new, albeit woefully understudied, vector for potential analyses, especially given their central role in traditional agricultural systems as a buffer against environmental stress. The peculiar agronomic character of legumes, especially among the widely cultivated varieties that are toxic in their unrefined state, could allow for robust hypotheses about agricultural strategies to be tested against our paleoclimate record. Importantly, these hypotheses could be tested against a wide variety of models of human–plant and human–environment interaction, as they could be based on labor costs rather than assumptions of ancient cultural preference. Legumes, however, present particular difficulties as objects of analyses, and therefore some methodological cautions are in order. Consequently, instead of proposing and testing hypotheses, this article seeks instead to inspire future research in relation to our constantly improving data. Full article
(This article belongs to the Special Issue The Archaeology of Climate Change)
17 pages, 1460 KiB  
Article
Sustainability of Maintaining Glass Collections
by David Thickett and Antanas Mėlinis
Heritage 2025, 8(7), 251; https://doi.org/10.3390/heritage8070251 - 25 Jun 2025
Viewed by 193
Abstract
Maintaining a tight RH range for unstable glass is energy- and carbon-intensive. The carbon footprint of several methods for controlling showcases and storerooms, including sorbents, dehumidifiers and sorbents, Miniclima, and RK2, has been measured. Dehumidifiers outperformed Miniclima and RK2 units in control capability, [...] Read more.
Maintaining a tight RH range for unstable glass is energy- and carbon-intensive. The carbon footprint of several methods for controlling showcases and storerooms, including sorbents, dehumidifiers and sorbents, Miniclima, and RK2, has been measured. Dehumidifiers outperformed Miniclima and RK2 units in control capability, but all three exhibited a higher carbon footprint than passive control methods. However, tailoring the right conditions for the right objects is crucial. The decay of different glass compositions in atmospheric conditions was measured using surface ion swabbing. Conditions below 40% in addition to forced air movement universally slowed deterioration. Formic acid was found to significantly accelerate glass alteration but could be removed using the RK2 unit. Full article
(This article belongs to the Special Issue The Conservation of Glass in Heritage Science)
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