6,479 research outputs found

    Humour in fifteenth-century France: a study of visual evidence

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    Humour in Fifteenth-Century France: A Study of Visual Evidence is an investigation of the development of humour in late medieval France, as expressed in the visual arts. The research identifies and examines comic themes in Valois visual culture through analysis of three case studies. The first is the new iconography for the comedies of Terence, created in the early fifteenth century for the Duke of Berry and the Valois Princes (BnF Lat. 7907A and Arsenal Ms-664 réserve). The second is the manuscript of René d’Anjou’s Livre du Coeur d’Amour Épris (ÖNB Cod. Vind. 2597). The third is the only extant fifteenth-century illuminated manuscript of the Cent Nouvelles Nouvelles (GUL Ms Hunter 252 [U.4.10]). The special emphasis on the arts of the book allows for a discussion of the illuminations in relation to the text they intend to illustrate. Each of these works offers a distinct contribution to the topic by presenting a rich variety of material and different shades, types and forms of humour expressed pictorially. Their nature as manuscripts involves a personal dimension, which narrows their intended audience to specific and well researched historic personalities, facilitating the reconstruction of their tastes, pleasures and sense of humour. Thus, these works permit insights into how humour was expressed, understood and appreciated, and they allow for a nuanced discussion on the comedic and the nature of visuality in late medieval France. Each of the investigated manuscripts has been studied previously, yet their visual humour has not been addressed as an independent and intentional artistic creation with the specific function of provoking amusement and laughter. This thesis is the first such investigation of humour in visual culture for this period, addressing the lacuna in scholarship and showing that there is a rich diversity of visual material that merits analysis. It argues that pictorial expressions of humour became an important focus for leading creative artists in France through the course of the fifteenth century, and it contextualises this art historical phenomenon within the intellectual, social and political history that surrounded it. The reconstruction of the circumstances in which works of art were made, displayed and understood highlights the changes in the prospective audiences for these works, and the ways different viewers engaged and appreciated humour expressed visually. As well as providing new insights into the patrons, this thesis discusses the artists’ approach towards their text of reference, their inventions, innovations and creative impulses. In doing so, the investigation highlights a close connection with theatre and performance, and it identifies the printing industry as a contributing factor for the diffusion of comic iconography. Studying humour is important because it determines social boundaries and functions as a barometer of social, political, sexual and ethical sensibilities. Humour in Fifteenth-Century France: A Study of Visual Evidence addresses a variety of media and permits a closer reading of the role of humour and its functions in Valois France and in Western Europe in the later Middle Ages, expanding our understanding of late medieval concepts of visuality and appreciation of the image

    How social media brand community development impacts consumer engagement and value formation; perspectives from the cosmetics industry

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    Social media and social media brand communities (SMBCs) are powerful tools for long-term consumer-brand relationship building. As a result, SMBCs are becoming significant marketing channels. Despite the wide use and adoption of SMBCs, further research is called for, as both practitioners and academics lack an understanding of the processes taking place within SMBCs. This study aims to contribute to knowledge of: (1) consumer engagement, (2) value formation in SMBCs, and (3) establishing the relationship between consumer engagement and value formation within the SMBC environment. This thesis adopts netnography, a method commonly employed to explore online communities in the social media environment. Three cosmetics brands were selected for this study. The selection was driven by geographical location, posting frequency and user activity. Data were retrospectively collected from Facebook SMBCs between 1st December 2019 and 31st January 2020. The data analysis employed thematic analysis techniques and was further guided by netnographic procedural steps, encompassing 25 distinct data operations. In total, 87 conversation threads were examined, which included 6,401 consumer comments. The findings present a typology of brand posts consisting of five overarching themes: presentation of offerings, belongingness building, engagement building, value-led, and educational. The research also identified a consumer comment typology consisting of four overarching themes brand-centred communication, cognitive-centred communication, conversation-centred communication, and personal experience-centred communication. Additionally, the thesis explores value formation processes within SMBCs, and the value types formed through consumer-to-consumer value formation interaction, brand-to-consumer value formation interaction, consumer-to-brand value formation interaction, as well as individual value formation processes, i.e., customer independent value formation and brand independent value facilitation. Through the findings, thesis broadens knowledge of the implication of SMBC development on consumer engagement. Additionally, this study extends the scope of value formation beyond service marketing, providing valuable insights into how value is created and perceived in the context of SMBCs. This research is also of significance for practice as it offers guidance and insight into how different brand posts can facilitate SMBC development, and, in turn, consumer engagement and value formation. The research provides a link between SMBC development and consumer engagement, highlighting the importance of SMBCs in the successful facilitation of consumer engagement. In particular, it provides evidence that the development of an SMBC has a significant impact on consumer engagement. The typology of brand posts that this study generates highlights the link between the types of posts published by the brand and SMBC development. In addition, the typology of consumer posts also suggests that there is a link between the types of comments published by consumers and the degree of SMBC development. As a result, the findings indicate significant growth in the variety of topics discussed within more developed SMBCs alongside a shift within the topics discussed. The study also investigates value formation within SMBCs, thereby enhancing the understanding of how SMBCs can facilitate value formation. By doing so, this research successfully extends the value formation lens predominantly applied in service marketing. In particular, the findings highlight the role of different actors in enabling the formation of different value types. Furthermore, the research emphasises the value of SMBCs as knowledge repositories as important virtual spaces for both brands and consumers. The findings facilitate understanding of the importance of SMBCs in value formation processes, contributing to advancing knowledge of the role of SMBCs in the development of consumer engagement and value formation. The thesis presents a contextualised conceptual framework of value formation within SMBCs, that captures different interactions taking place in the SMBC environment but also draws attention to the different value types generated through interaction between different actors. Finally, the thesis offers a conceptual framework of SMBCs, consumer engagement and value formation, which captures the correlation between the three researched concepts

    Web-based platform to collect, share and manage technical data of historical systemic architectures: the Telegraphic Towers along the Madrid-Valencia path

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    Considering the variety of architectural Cultural Heritage typologies, systemic architectures require specific attention in the recovery process. The dimensions of "extension" and "recurrence" at geographic and technological levels affect the complexity of their knowledge process; they require systematic ways for their categorisation and comprehension to guarantee correct diagnosis and suitable rehabilitation. Recent applications involving Internet of Things (IoT) for the built Cultural Heritage have demonstrated the potentialities of three-dimensional (3D) geographic information system (GIS) models and structured databases in supporting complex degrees of knowledge for technicians, as well as management for administrators. Starting from such experiences, the work presents the setting up of a web-based platform to support the knowledge and management of systemic architectures, considering the geographical distribution of fabrics, natural and anthropic boundary conditions, and technical and administrative details. The platform takes advantage of digital models, machine and deep learning procedures and relational databases, in a GIS-based environment, for the recognition and categorisation of prevalent physical and qualitative features of systemic architectures, the recognition and qualification of dominant and recurrent decays and the management of recovery activities in a semi-automatic way. Specifically, the main digital objects used for testing the applied techniques and setting up the platform are based on Red-Green-Blue (RGB) and mapped point clouds of the historical Telegraphic Towers located along the Madrid-Valencia path, resulting from the on-site investigations. Their choice is motivated by the high level of knowledge about the cases reached in the last years by the authors, allowing them to test rules within the decision support systems and innovative techniques for their decay mapping. As the experience has demonstrated, the systematisation of technical details and operative pipeline of methods and tools allow the normalisation and standardisation of the intervention selection process; this offers policymakers an innovative tool based on traditional procedures for conservation plans, coherent with a priority-based practice

    Investigating the Innate Immune Systems of Bats and Their Roles as Zoonotic Viral Reservoirs

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    The zoonotic spillover of viral pathogens from wild animal reservoirs into human populations remains the leading cause of emerging and re-emerging infectious diseases globally. Bats represent important viral reservoirs, notorious for the diversity and richness of the viruses they host, several of which are highly pathogenic when transmitted to humans. Remarkably, bats appear to host an abundance of these viruses without exhibiting any clinical signs of disease. A dominant hypothesis for this ability suggests that bats can control viral replication early in the innate immune response, which acts as the first line of defence against infection. However, bat immunology remains fundamentally understudied, largely due to their high species diversity and the lack of accessible reagents required for bat research. Therefore, in this work we explored and characterised key components of bat innate immunity to gain a better understanding of bats as viral reservoirs and contribute to the currently limited literature. Here, we demonstrated the in vitro transcriptomic response of the bat model species, Pteropus alecto (P.alecto) upon stimulation with the bat henipavirus Cedar virus and also with a type III bat interferon (paIFNλ). These investigations highlighted key transcripts, some of which were immune-related, in the response of bats to the separate stimuli and presents a foundation for further research into significant genes concerned in bat viral infection. Building from genome-wide transcriptomics, three distinctive bat innate immune genes representative of different stages of interferon signalling were selected for comparative genomics and functional characterisation. Our work demonstrated the conservation of genes between bats and humans, including IRF7, IFIT5 and IFI35. Specific findings for IRF7 included its successful translocation to the cell nucleus upon stimulation. IFIT5 and IFI35 were specifically selected for exploration due to previous research demonstrating the respective antiviral and conflicting anti- or pro-viral roles of these genes in humans. Significantly, our research demonstrated the direct antiviral action of P.alecto IFIT5 against negative-sense RNA viruses. Collectively, our findings offer valuable contributions to the field of bat antiviral immunity and provide the framework for future investigative studies into the role and function of the bat innate immune system and bat viral tolerance mechanisms

    Evolutionary ecology of obligate fungal and microsporidian invertebrate pathogens

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    The interactions between hosts and their parasites and pathogens are omnipresent in the natural world. These symbioses are not only key players in ecosystem functioning, but also drive genetic diversity through co-evolutionary adaptations. Within the speciose invertebrates, a plethora of interactions with obligate fungal and microsporidian pathogens exist, however the known interactions is likely only a fraction of the true diversity. Obligate invertebrate fungal and microsporidian pathogen require a host to continue their life cycle, some of which have specialised in certain host species and require host death to transmit to new hosts. Due to their requirement to kill a host to spread to a new one, obligate fungal and microsporidian pathogens regulate invertebrate host populations. Pathogen specialisation to a single or very few hosts has led to some fungi evolving the ability to manipulate their host’s behaviour to maximise transmission. The entomopathogenic fungus, Entomophthora muscae, infects houseflies (Musca domestica) over a week-long proliferation cycle, resulting in flies climbing to elevated positions, gluing their mouthparts to the substrate surface, and raising their wings to allow for a clear exit from fungal conidia through the host abdomen. These sequential behaviours are all timed to occur within a few hours of sunset. The E. muscae mechanisms used in controlling the mind of the fly remain relatively unknown, and whether other fitness costs ensue from an infection are understudied.European Commissio

    Breaking Virtual Barriers : Investigating Virtual Reality for Enhanced Educational Engagement

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    Virtual reality (VR) is an innovative technology that has regained popularity in recent years. In the field of education, VR has been introduced as a tool to enhance learning experiences. This thesis presents an exploration of how VR is used from the context of educators and learners. The research employed a mixed-methods approach, including surveying and interviewing educators, and conducting empirical studies to examine engagement, usability, and user behaviour within VR. The results revealed educators are interested in using VR for a wide range of scenarios, including thought exercises, virtual field trips, and simulations. However, they face several barriers to incorporating VR into their practice, such as cost, lack of training, and technical challenges. A subsequent study found that virtual reality can no longer be assumed to be more engaging than desktop equivalents. This empirical study showed that engagement levels were similar in both VR and non-VR environments, suggesting that the novelty effect of VR may be less pronounced than previously assumed. A study against a VR mind mapping artifact, VERITAS, demonstrated that complex interactions are possible on low-cost VR devices, making VR accessible to educators and students. The analysis of user behaviour within this VR artifact showed that quantifiable strategies emerge, contributing to the understanding of how to design for collaborative VR experiences. This thesis provides insights into how the end-users in the education space perceive and use VR. The findings suggest that while educators are interested in using VR, they face barriers to adoption. The research highlights the need to design VR experiences, with understanding of existing pedagogy, that are engaging with careful thought applied to complex interactions, particularly for collaborative experiences. This research contributes to the understanding of the potential of VR in education and provides recommendations for educators and designers to enhance learning experiences using VR

    Software Design Change Artifacts Generation through Software Architectural Change Detection and Categorisation

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    Software is solely designed, implemented, tested, and inspected by expert people, unlike other engineering projects where they are mostly implemented by workers (non-experts) after designing by engineers. Researchers and practitioners have linked software bugs, security holes, problematic integration of changes, complex-to-understand codebase, unwarranted mental pressure, and so on in software development and maintenance to inconsistent and complex design and a lack of ways to easily understand what is going on and what to plan in a software system. The unavailability of proper information and insights needed by the development teams to make good decisions makes these challenges worse. Therefore, software design documents and other insightful information extraction are essential to reduce the above mentioned anomalies. Moreover, architectural design artifacts extraction is required to create the developer’s profile to be available to the market for many crucial scenarios. To that end, architectural change detection, categorization, and change description generation are crucial because they are the primary artifacts to trace other software artifacts. However, it is not feasible for humans to analyze all the changes for a single release for detecting change and impact because it is time-consuming, laborious, costly, and inconsistent. In this thesis, we conduct six studies considering the mentioned challenges to automate the architectural change information extraction and document generation that could potentially assist the development and maintenance teams. In particular, (1) we detect architectural changes using lightweight techniques leveraging textual and codebase properties, (2) categorize them considering intelligent perspectives, and (3) generate design change documents by exploiting precise contexts of components’ relations and change purposes which were previously unexplored. Our experiment using 4000+ architectural change samples and 200+ design change documents suggests that our proposed approaches are promising in accuracy and scalability to deploy frequently. Our proposed change detection approach can detect up to 100% of the architectural change instances (and is very scalable). On the other hand, our proposed change classifier’s F1 score is 70%, which is promising given the challenges. Finally, our proposed system can produce descriptive design change artifacts with 75% significance. Since most of our studies are foundational, our approaches and prepared datasets can be used as baselines for advancing research in design change information extraction and documentation

    Evaluation of different segmentation-based approaches for skin disorders from dermoscopic images

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    Treballs Finals de Grau d'Enginyeria Biomèdica. Facultat de Medicina i Ciències de la Salut. Universitat de Barcelona. Curs: 2022-2023. Tutor/Director: Sala Llonch, Roser, Mata Miquel, Christian, Munuera, JosepSkin disorders are the most common type of cancer in the world and the incident has been lately increasing over the past decades. Even with the most complex and advanced technologies, current image acquisition systems do not permit a reliable identification of the skin lesion by visual examination due to the challenging structure of the malignancy. This promotes the need for the implementation of automatic skin lesion segmentation methods in order to assist in physicians’ diagnostic when determining the lesion's region and to serve as a preliminary step for the classification of the skin lesion. Accurate and precise segmentation is crucial for a rigorous screening and monitoring of the disease's progression. For the purpose of the commented concern, the present project aims to accomplish a state-of-the-art review about the most predominant conventional segmentation models for skin lesion segmentation, alongside with a market analysis examination. With the rise of automatic segmentation tools, a wide number of algorithms are currently being used, but many are the drawbacks when employing them for dermatological disorders due to the high-level presence of artefacts in the image acquired. In light of the above, three segmentation techniques have been selected for the completion of the work: level set method, an algorithm combining GrabCut and k-means methods and an intensity automatic algorithm developed by Hospital Sant Joan de Déu de Barcelona research group. In addition, a validation of their performance is conducted for a further implementation of them in clinical training. The proposals, together with the got outcomes, have been accomplished by means of a publicly available skin lesion image database
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