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  1. AU="Maria Papadopoulou"
  2. AU="Wu, Jianrong"
  3. AU="Rodrigues, Daniel Sobreira"
  4. AU="Angello R. Retamal-Díaz"
  5. AU="Nicole C. Deziel"
  6. AU="Shajrawi, Abedalmajeed Methqal"
  7. AU=Aydin Seckin AU=Aydin Seckin
  8. AU="Narwal, Vikrant"
  9. AU="Minamoto, Toshinari"

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  1. Artikel ; Online: The LACRIMALit Ontology of Crisis

    Maria Papadopoulou / Christophe Roche / Eleni-Melina Tamiolaki

    Information, Vol 13, Iss 8, p

    An Event-Centric Model for Digital History

    2022  Band 398

    Abstract: The article presents the building of an event-centric model for the computational representation of crisis events using an ontology encoded in the Web Ontology Language (OWL). The work presented here is done in collaboration with the Leaders and Crisis ... ...

    Abstract The article presents the building of an event-centric model for the computational representation of crisis events using an ontology encoded in the Web Ontology Language (OWL). The work presented here is done in collaboration with the Leaders and Crisis Management in Ancient Literature. A Comparative Approach (LACRIMALit) project, (2022–2025) hosted at the Institute for Mediterranean Studies/Foundation for Research and Technology (IMS-FORTH). A key outcome of the project is the LACRIMALit ontology that aims principally at the semantic annotation of ancient Greek historiographical texts in open access via Perseus Digital Library. The ontology will facilitate reasoning on and across these documents and enable their semantic querying. The tagset of annotations, concepts, relations, and terms of the ontology will be both human and machine readable, extensible and reusable. The annotated corpus of texts to be produced will be available for sophisticated queries based on the concepts and relations, defined by the ontologies. This will considerably improve the string-based querying of the texts in their present digital format. This article presents the principles of conceptualization of the domain in the three dimensions: domain knowledge (mainly classes illustrated with some individuals), linguistic dimension (terms, proper names, definite descriptions), and references.
    Schlagwörter ontology ; semantic web technologies ; digital humanities ; standards ; interoperability ; linked data ; Information technology ; T58.5-58.64
    Sprache Englisch
    Erscheinungsdatum 2022-08-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  2. Artikel ; Online: Terminologie et ontologie pour les humanités numériques

    Christophe Roche / Maria Papadopoulou

    Humanités Numériques, Vol

    le cas des vêtements de la Grèce antique

    2020  Band 2

    Abstract: This article presents the results of a collaboration between a classical philologist and a terminologist initiated during an EU-funded research project on ancient Greek clothing (Marie Skłodowska Curie Actions Project Chlamys. The Cultural Biography of a ...

    Abstract This article presents the results of a collaboration between a classical philologist and a terminologist initiated during an EU-funded research project on ancient Greek clothing (Marie Skłodowska Curie Actions Project Chlamys. The Cultural Biography of a Garment in Hellenistic Egypt, grant 657898).The terminological ambiguity prevailing in the studies on garments of this period, whose sources are often incomplete (Delaporte 1981, 7), severely hinders the communication and knowledge sharing among experts. Clearly identifying what the terms designate, in what is specific, but also vague, as well as the naming of garments was at the heart of our research, which demanded the explicit representation of the knowledge that defines the different types of clothing.Added to this terminological concern is the need to enable the identification of a given garment according to its characteristics, i.e. to be able to identify (classify) the type or types of clothing to which it belongs. It should be noted that today there is no universally recognised (semi-)automated classification of garments as cultural artefacts of past cultures.This is why we are interested in the notion of ontology resulting from knowledge engineering and the semantic Web, and consequently in ontoterminology, a terminology whose conceptual system is a formal ontology. It was then necessary to define a methodology for the construction of such an ontoterminology, alternating the linguistic and conceptual dimensions. Ontoterminology defines concepts based on a set of essential characteristics, “knowledge primitives” shared by the experts, from which the ontology of the domain is built.The result is a multilingual terminology whose meaning is based on an ontology of the clothing domain of ancient Greece, which is seen here as shared and consensual, and which can give rise to many computer applications: multilingual terminology dictionaries, multilingual semantic search engines, automatic classification, document management, knowledge management, etc.This project highlighted the importance, even the necessity, of having a tool-assisted method based on a multidisciplinary approach, reconciling “emic” and “etic” approaches, and drawing on linguistics, terminology and knowledge modelling, a field of artificial intelligence. It also highlighted the importance of adopting a method that allows the collaboration of distributed end users, and whose results can be shared through the use of exchange formats complying with the standards in force, including those of the ISO and of the W3C.This article will focus on presenting the method and tool used in this project as they have generalisable features for similar projects in digital humanities, as well as some of the results obtained.
    Schlagwörter ancient studies and classical studies ; terminology ; thesaurus ; ontology ; clothing ; History of scholarship and learning. The humanities ; AZ20-999
    Sprache Französisch
    Erscheinungsdatum 2020-06-01T00:00:00Z
    Verlag OpenEdition
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  3. Artikel ; Online: QUALITY PARAMETERS IN CONSERVATION-RESTORATION CHOICES – THE CASE OF THE TOWER OF THE WINDS IN ATHENS

    Maria Papadopoulou / Andromache Gazi

    Ochrona Dziedzictwa Kulturowego, Iss 8, Pp 239-

    2019  Band 254

    Abstract: The chemistry- and physics-based approach of conservation has led to the view that conservator-restorers use quantitative criteria which provide objective choices. Today, however, there is a shift of focus from material-centred to people-oriented ... ...

    Abstract The chemistry- and physics-based approach of conservation has led to the view that conservator-restorers use quantitative criteria which provide objective choices. Today, however, there is a shift of focus from material-centred to people-oriented approaches within the field of heritage preservation. This shift leads to a redefinition of the conservation-restoration field and its ethics in relation to society and calls for the adoption of diverse methodologies. Within this context, this paper discusses the qualitative factors which inform decision-making processes in conservation-restoration practice. More specifically, the paper examines the case of the so called “Tower of the Winds” in Athens and looks at the quality parameters which informed conservation-restoration work carried out at the Tower during 2014-2015. Overall, it is shown that the prominence of the quality parameters which inform contemporary conservation-restoration practice reveals the subjective dimension of conservation-restoration choices. The research has also showed that current trends tend to emphasize the historical rather than the aesthetic or other values of monuments.
    Schlagwörter conservation/restoration ; quality parameters in decision-making ; tower of the winds ; athens ; Ethnology. Social and cultural anthropology ; GN301-674 ; Religion (General) ; BL1-50 ; History and principles of religions ; BL660-2680
    Thema/Rubrik (Code) 333
    Sprache Englisch
    Erscheinungsdatum 2019-12-01T00:00:00Z
    Verlag Lublin University of Technology
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  4. Artikel ; Online: Interpersonal Meaning

    Maria Koutsikou / Vasilia Christidou / Maria Papadopoulou / Fotini Bonoti

    Education Sciences, Vol 11, Iss 245, p

    Verbal Text–Image Relations in Multimodal Science Texts for Young Children

    2021  Band 245

    Abstract: Verbal text and images constitute the principal semiotic modes interacting to produce interpersonal meanings in multimodal science texts for young children. These meanings relate to pedagogical perceptions about children’s learning. This study examined ... ...

    Abstract Verbal text and images constitute the principal semiotic modes interacting to produce interpersonal meanings in multimodal science texts for young children. These meanings relate to pedagogical perceptions about children’s learning. This study examined verbal text–image relations regarding the interpersonal meaning dimensions of address (the way the reader is addressed), social distance (the kind of the relationship between the reader and represented participants), and involvement (the extent to which the reader is engaged with what is represented) in multimodal text excerpts from science-related books for preschool children. The sample consisted of 300 randomly selected units of analysis. For each unit, the verbal and the visual content was analyzed along each dimension, and the relevant verbal text–image relation was determined. Results indicated that regarding address and involvement, relations of convergence appeared significantly more frequently than relations of complementarity and divergence. Concerning social distance, relations of complementarity and divergence were observed more frequently than relations of convergence. Results are discussed in the context of the Systemic Functional Grammar and the Grammar of Visual Design, in the light of the socio-cognitive perspective on science teaching and learning. Implications for the selection, design, and use of multimodal science texts for young children are also discussed.
    Schlagwörter address ; interpersonal meaning ; involvement ; multimodal texts ; science ; social distance ; Education ; L
    Thema/Rubrik (Code) 410
    Sprache Englisch
    Erscheinungsdatum 2021-05-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  5. Artikel ; Online: Anatomical Variations of the Sinonasal Area and their Clinical Impact on Sinus Pathology

    Anna-Maria Papadopoulou / Nikolaos Bakogiannis / Ioanna Skrapari / Chris Bakoyiannis

    International Archives of Otorhinolaryngology (2022)

    A Systematic Review

    2022  

    Abstract: Introduction Anatomical variations of the nasal cavity and of the paranasal sinuses are frequently encountered and play an important role in dysfunctional drainage of sinuses. However, it is not clear in the literature whether they predispose to sinus ... ...

    Abstract Introduction Anatomical variations of the nasal cavity and of the paranasal sinuses are frequently encountered and play an important role in dysfunctional drainage of sinuses. However, it is not clear in the literature whether they predispose to sinus pathology. Objectives The aim of the present review is to summarize the understanding of the association between anatomical variations of the sinonasal area and sinus pathology. Data Synthesis The present review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. We performed a thorough research on PubMed from October 2004 until May 2020 by using the search terms paranasal sinus anatomical variations and sinus disease, sinusitis, and mucosal disease. Thirty studies were eligible and were included in the analysis. Overall, the studies encompassed a total of 6,999 patients included in the present review. In many studies, it has been statistically established that certain anatomical variations increase the risk of sinus disease. On the other hand, the rest of the collected studies failed to show any statistically significant correlation between anatomical variants and sinus pathology. Conclusion The present study highlights the possible correlation between some anatomical variations of the sinonasal area and pathologies of the paranasal sinuses. Careful assessment and computed tomography (CT) in patients with chronic rhinosinusitis is needed, especially in those undergoing endoscopic surgery, to identify and treat anatomical variations in the paranasal sinuses that may be correlated with rhinosinusitis. Due to contradictory results in the literature, further research is needed to elucidate the effects of anatomical variants of the sinonasal area.
    Schlagwörter anatomical variations ; paranasal sinuses ; nasal cavity ; sinus pathology ; Medicine ; R ; Otorhinolaryngology ; RF1-547
    Thema/Rubrik (Code) 610
    Sprache Englisch
    Erscheinungsdatum 2022-01-01T00:00:00Z
    Verlag Thieme Revinter Publicações Ltda.
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  6. Artikel ; Online: Knowing and Guessing

    Maria Papadopoulou

    Meta-Carto-Semiotics, Vol 2, Pp 1-

    How do 9 year olds approach the meaning of visual signs in weather charts?

    2009  Band 7

    Abstract: Weather charts in the popular media constitute a specific field of semiosis, meaning that they allow procedures of production and transfer of information by means of visual signs which, unlike other semiotic systems, are not firm and standard. The ... ...

    Abstract Weather charts in the popular media constitute a specific field of semiosis, meaning that they allow procedures of production and transfer of information by means of visual signs which, unlike other semiotic systems, are not firm and standard. The article deals with the ways 9 year old children interpret visual signs appearing on a website for weather predictions. The hypothesis of the research was that in order to interpret these visual signs correctly, the children have to reveal the semiotic system they are part of and then, discover the semiotic principles behind the formation of every sign or group of signs. As visual signs appearing at weather charts may be hypo-icons, indexes or symbols – regarding the relation they have to their dynamic objects – , the children's correct sign interpreation has to be based on the resemblance, the causality or contiguity and the symbolic value of the signs, correspondingly. Visual language is not always transparent and universally understood; therefore, children should be trained into it at school as part of the development of their general visual literacy.
    Schlagwörter weather charts ; visual signs ; children ; visual literacy ; Mathematical geography. Cartography ; GA1-1776 ; Geography. Anthropology. Recreation ; G ; DOAJ:Geography ; DOAJ:Earth and Environmental Sciences
    Thema/Rubrik (Code) 700
    Sprache Englisch
    Erscheinungsdatum 2009-01-01T00:00:00Z
    Verlag Meta-Carto-Semiotics
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  7. Artikel ; Online: A Case of SARS-CoV-2 Clinical Relapse after 4 Negative RT-PCR Tests in Greece

    Fotis Konstantinou / Ioanna Skrapari / Eleni Bareta / Nikolaos Bakogiannis / Anna-Maria Papadopoulou / Chris Bakoyiannis

    Clinical Medicine Insights: Case Reports, Vol

    Recurrence or Reinfection?

    2021  Band 14

    Abstract: SARS-CoV-2 pandemic is the greatest public health concern of the year 2020. There are several worldwide reports of patients who have managed to recover from SARS-CoV-2 infection with negative PCR test results, that for unknown reasons convert back to ... ...

    Abstract SARS-CoV-2 pandemic is the greatest public health concern of the year 2020. There are several worldwide reports of patients who have managed to recover from SARS-CoV-2 infection with negative PCR test results, that for unknown reasons convert back to positive PCR. We report a case of a patient in our hospital who developed positive PCR test results for SARS-CoV-2, after 4 consecutive results that were negative, along with a full-blown clinical syndrome of SARS-CoV-2 infection.
    Schlagwörter Medicine (General) ; R5-920
    Sprache Englisch
    Erscheinungsdatum 2021-04-01T00:00:00Z
    Verlag SAGE Publishing
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  8. Artikel ; Online: Effector Vγ9Vδ2 T cell response to congenital Toxoplasma gondii infection

    Ling Ma / Maria Papadopoulou / Martin Taton / Francesca Genco / Arnaud Marchant / Valeria Meroni / David Vermijlen

    JCI Insight, Vol 6, Iss

    2021  Band 16

    Abstract: A major γδ T cell population in human adult blood are the Vγ9Vδ2 T cells that are activated and expanded in a TCR-dependent manner by microbe-derived and endogenously derived phosphorylated prenyl metabolites (phosphoantigens). Vγ9Vδ2 T cells are also ... ...

    Abstract A major γδ T cell population in human adult blood are the Vγ9Vδ2 T cells that are activated and expanded in a TCR-dependent manner by microbe-derived and endogenously derived phosphorylated prenyl metabolites (phosphoantigens). Vγ9Vδ2 T cells are also abundant in human fetal peripheral blood, but compared with their adult counterparts they have a distinct developmental origin, are hyporesponsive toward in vitro phosphoantigen exposure, and do not possess a cytotoxic effector phenotype. In order to obtain insight into the role of Vγ9Vδ2 T cells in the human fetus, we investigated their response to in utero infection with the phosphoantigen-producing parasite Toxoplasma gondii (T. gondii). Vγ9Vδ2 T cells expanded strongly when faced with congenital T. gondii infection, which was associated with differentiation toward potent cytotoxic effector cells. The Vγ9Vδ2 T cell expansion in utero resulted in a fetal footprint with public germline-encoded clonotypes in the Vγ9Vδ2 TCR repertoire 2 months after birth. Overall, our data indicate that the human fetus, from early gestation onward, possesses public Vγ9Vδ2 T cells that acquire effector functions following parasite infections.
    Schlagwörter Immunology ; Infectious disease ; Medicine ; R
    Thema/Rubrik (Code) 610
    Sprache Englisch
    Erscheinungsdatum 2021-08-01T00:00:00Z
    Verlag American Society for Clinical investigation
    Dokumenttyp Artikel ; Online
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  9. Artikel: Assessment of spatial hybrid methods for predicting soil organic matter using DEM derivatives and soil parameters

    Tziachris, Panagiotis / Vassilis Aschonitis / Theocharis Chatzistathis / Maria Papadopoulou

    Catena. 2019 Mar., v. 174

    2019  

    Abstract: This paper assesses hybrid spatial models with the use of auxiliary variables based on machine learning algorithms for predicting soil Organic Matter (OM) content in Kastoria area (Greece). The machine learning methods that are used are random forests ( ... ...

    Abstract This paper assesses hybrid spatial models with the use of auxiliary variables based on machine learning algorithms for predicting soil Organic Matter (OM) content in Kastoria area (Greece). The machine learning methods that are used are random forests (RF) and gradient boosting (GB), also called ensemble methods, which combine multiple Classification and Regression Trees (CART). Overall, the different methods evaluated in the current study are Ordinary Kriging (OK), Regression Kriging (RK), Random Forest (RF), Random Forest Kriging (RFK), Gradient Boosting (GB) and Gradient Boosting Kriging (GBK). According to the findings of the study, machine learning methods (RF and GB) improve the prediction accuracy. The improvement ranged from 6% to 9% for RMSE, 47% to 250% for R2 and 4% to 11% for MAE. Moreover, the introduction of residuals' kriging (hybrid methods), increases the accuracy of predictions furthermore (from 1% to 34%). It is also interesting that the measured collocated soil parameters that are used as auxiliary variables have consistently more influence (increased Pearson correlation coefficient for MLR and importance for RF and GB) than the environmental parameters. The main reason could be the flat terrain and the rather homogenous study area that minimizes the effect of topography on the soils. Therefore, topography and spatial characteristics of an area should be considered in design phase, in order to choose the appropriate secondary information in soil parameters' prediction.
    Schlagwörter algorithms ; artificial intelligence ; environmental factors ; kriging ; landscapes ; models ; prediction ; soil ; soil organic matter ; topography ; Greece
    Sprache Englisch
    Erscheinungsverlauf 2019-03
    Umfang p. 206-216.
    Erscheinungsort Elsevier B.V.
    Dokumenttyp Artikel
    ZDB-ID 519608-5
    ISSN 1872-6887 ; 0008-7769 ; 0341-8162
    ISSN (online) 1872-6887 ; 0008-7769
    ISSN 0341-8162
    DOI 10.1016/j.catena.2018.11.010
    Datenquelle NAL Katalog (AGRICOLA)

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  10. Artikel ; Online: Comparing Machine Learning Models and Hybrid Geostatistical Methods Using Environmental and Soil Covariates for Soil pH Prediction

    Panagiotis Tziachris / Vassilis Aschonitis / Theocharis Chatzistathis / Maria Papadopoulou / Ioannis (John) D. Doukas

    ISPRS International Journal of Geo-Information, Vol 9, Iss 276, p

    2020  Band 276

    Abstract: In the current paper we assess different machine learning (ML) models and hybrid geostatistical methods in the prediction of soil pH using digital elevation model derivates (environmental covariates) and co-located soil parameters (soil covariates). The ... ...

    Abstract In the current paper we assess different machine learning (ML) models and hybrid geostatistical methods in the prediction of soil pH using digital elevation model derivates (environmental covariates) and co-located soil parameters (soil covariates). The study was located in the area of Grevena, Greece, where 266 disturbed soil samples were collected from randomly selected locations and analyzed in the laboratory of the Soil and Water Resources Institute. The different models that were assessed were random forests (RF), random forests kriging (RFK), gradient boosting (GB), gradient boosting kriging (GBK), neural networks (NN), and neural networks kriging (NNK) and finally, multiple linear regression (MLR), ordinary kriging (OK), and regression kriging (RK) that although they are not ML models, they were used for comparison reasons. Both the GB and RF models presented the best results in the study, with NN a close second. The introduction of OK to the ML models’ residuals did not have a major impact. Classical geostatistical or hybrid geostatistical methods without ML (OK, MLR, and RK) exhibited worse prediction accuracy compared to the models that included ML. Furthermore, different implementations (methods and packages) of the same ML models were also assessed. Regarding RF and GB, the different implementations that were applied (ranger-ranger, randomForest-rf, xgboost-xgbTree, xgboost-xgbDART) led to similar results, whereas in NN, the differences between the implementations used (nnet-nnet and nnet-avNNet) were more distinct. Finally, ML models tuned through a random search optimization method were compared with the same ML models with their default values. The results showed that the predictions were improved by the optimization process only where the ML algorithms demanded a large number of hyperparameters that needed tuning and there was a significant difference between the default values and the optimized ones, like in the case of GB and NN, but not in RF. In general, the current study concluded that ...
    Schlagwörter machine learning ; geostatistics ; hybrid geostatistical methods ; soil pH ; environmental variables ; Geography (General) ; G1-922
    Thema/Rubrik (Code) 310
    Sprache Englisch
    Erscheinungsdatum 2020-04-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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