Representational Artifacts Research Articles

The conceptual nuances of technology-supported learning in engineering

ABSTRACT Enabling theory-practice bridging in engineering education is essential for developing twenty-first century graduate capabilities. Massification, resource constraints, and technological development have resulted in significant shifts to alternative forms of practical engagement, such as the use of online laboratories, but how do these contribute to learning? Based on three illustrative case studies at a research-intensive institution in the Global South, this paper offers a conceptualisation of the degrees of complexity entailed in multimodal approaches to teaching Fluid Mechanics, Finite Element Analysis and Control Systems at different stages of their respective programmes The paper examines the different levels of abstract-concrete learning when students engage with verbal, symbolic, graphic and physical representational artefacts designed to enable cumulative learning. The conceptual instruments are theoretically and methodologically drawn from Legitimation Code Theory dimensions, which lend themselves to the graphic analysis of knowledge practices. It is suggested that the explicit integration of and shifting between levels of abstraction and complexity with different kinds of technologies enables the kind of cumulative learning necessary to prepare technically-equipped graduates for complex twenty-first century engineering contexts.

The platformization of military communication: The digital strategy of the Israel Defense Forces on Twitter

Platforms are conditioning the way public communication is conducted while presenting themselves as neutral connectors. Social media logic encompasses norms, strategies, mechanisms and economies acting at the intersection between online platforms and society. Military communication is adapting itself to communicative and socio-technical innovations dictated by online platforms and social network sites. Armies are currently using digital media and online platforms in at least two different ways: a promotional one, based on the ‘normalization’ of militarism, and a conflictual one, based on the display and management of conflicts. In this article, the authors apply qualitative content analysis to investigate the platformed strategy of the Israel Defense Forces (IDF) Twitter account. Results show how the IDF embraces platformization and uses social media logic to develop a coherent narrative, projecting an attractive image, establishing an international positioning and defining international interlocutors. The institution of communicative formats, the multiplication of themes and representational artefacts, and a re-defined aesthetics of army and violence are enabled by social media logic. Tweets from the IDF follow a dual path: they contribute to normalizing militarism and act on the conflictual display of current affairs.

The semantics of fiction

The paper reviews proposals by Abell, Predelli, and others on the semantics of fiction, focusing on the discourse through which fictions are created. Predelli develops the radical fictionalism of former writers like Kripke and van Inwagen, according to which that discourse is contentless and does not express propositions. This paper offers reasons to doubt these claims. It then explores realist proposals like Abell's in which singular terms in fictions refer to fictional characters, understood as socially created representational artifacts, and irrealist alternatives in which the discourse is fully meaningful even though those terms fail to refer.

THE IMPACT OF VIRTUAL TOURS ON MUSEUM EXHIBITIONS AFTER THE ONSET OF Covid-19 restrictions: visitor engagement and long term PERSPECTIVES

After the outbreak of Covid-19, galleries and museums have been experimenting with new ways to engage a potential audience remotely. This study focuses on the level of engagement of virtual tours in museums looking at the representation of architectural space, representation artifacts, and ease of use as possible correlated factors. A sample group of eighty early-career experts in the field of art, architecture, or design assessed their visit to the archaeological museum of Troya Muzesi in Canakkale, Turkey;half of the participants resided in Turkey, while the other half in Italy. This paper has addressed the following research questions with an online multi-level study: how is the online exhibition platform evaluated by its audience? Can regular employment of virtual tours engage new visitors in the long term? Is the representation of a museum, in the form of a virtual twin, an adequate surrogate that creates an immersive visiting experience? © 2021. All Rights Reserved.

The Queries Expansion on Biomedical Terminologies: Toward a Comparison of Knowledge Representation Artifacts for Information Retrieval

The Queries Expansion on Biomedical Terminologies: Toward a Comparison of Knowledge Representation Artifacts for Information Retrieval

Ontologies in Knowledge Organization

Within the knowledge organization systems (KOS) set, the term “ontology” is paradigmatic of the terminological ambiguity in different typologies. Contributing to this situation is the indiscriminate association of the term “ontology”, both as a specific type of KOS and as a process of categorization, due to the interdisciplinary use of the term with different meanings. We present a systematization of the perspectives of different authors of ontologies, as representational artifacts, seeking to contribute to terminological clarification. Focusing the analysis on the intention, semantics and modulation of ontologies, it was possible to notice two broad perspectives regarding ontologies as artifacts that coexist in the knowledge organization systems spectrum. We have ontologies viewed, on the one hand, as an evolution in terms of complexity of traditional conceptual systems, and on the other hand, as a system that organizes ontological rather than epistemological knowledge. The focus of ontological analysis is the item to model and not the intentions that motivate the construction of the system.

Genuine co-design: an activity theory analysis involving emergency nurses in an interdisciplinary new product development project of a novel medical device

This study analysed a series of workshops and explored prerequisites for interdisciplinary co-design among industrial designers, design engineers and users in the development of a novel medical device. Presented as a case study, this paper focus on what affects participants’ transformative processes towards genuine participation in co-design processes. Based on activity theory, we suggest that co-design activities have to support not only users, but all participants, shifting their perspectives beyond their own domain’s rules, motives, objects and division of labour, i.e., beyond their own activity system, to support users’ participation as equal members in design teams. We propose that genuine co-design requires a holistic approach where a neutral arena, an impartial facilitator, clear rules of play, along with representational artefacts as mediating tools in the formation of a new collective activity system to foster equality, mutual value and long-term knowledge generation. Such approach requires a process over time.

Where the host is part of the deal: Social and economic value in the platform economy

• We conduct an online experiment on consumers’ intention to book. • Booking intentions are linked to a hosts’ user representation (UR) artifacts. • UR artifacts entail personal, exogenous, or both types of information. • Artifacts’ effects are carried through social and economic value expectations. • Social (economic) value expectations are associated to personal information (exogenous information). In many platform-mediated services, people share resources in a way that involves social value beyond mere economic considerations. Considering peer-to-peer accommodation sharing, this paper links booking intentions to hosts’ user representation (UR). We consider how the most common UR artifacts facilitate sharing through social and economic value. Specifically, we differentiate artifacts that (1) convey personal information (e.g., self-descriptions), (2) are provided by exogenous sources (e.g., star ratings), and (3) conflate both of these informational properties (e.g., text reviews). We investigate these factors by means of an online experiment. Our results illustrate the dual property of text reviews and that booking intentions in co-usage sharing are driven by expected social and economic value to about equal extents.

Çocuklarda Sosyal Duyarlılığın Geliştirilmesi: ‘Sokak Hayvanlarının Yardımcıları’ Projesi

Maltreatment towards animals is one of the major problems that often arise. Although it is important to enact prohibitive and preventive measures on this issue, education from the early years is one of the main measures to increase social sensitivity. The fact that children encounter with stray animals in Turkey can be used as an opportunity for education about animals, which is integral to environmental education. In this sense, inquiring about stray animals with children can increase their social sensitivity and awareness because this topic provides children with concrete experiences and it is closely related to their daily life. In this study, a project on stray animals was described conducted with preschool children using the project approach. The study took place in a kindergarten classroom of an elementary school for 11 weeks, once a week. Participants of the study included 14 preschool children and two teacher candidates under the guidance of an academic advisor. The classroom teacher also supported teacher candidates during the project work and the candidates observed and documented the learning process using photos, notes, and children’s representational artifacts. Based on the observations during the learning process and the documentation, it has been concluded that preschool children’s social sensitivity and awareness towards stray animals were developed and their development was supported in multiple ways with the project work.

Involving blind user/experts in architectural design: conception and use of more-than-visual design artefacts

ABSTRACT Architectural design as collaborative practice relies on using representational artefacts. However, these artefacts and their use are prone to a visual bias, which may pose problems in co-designing with vision impaired people. This article studies how we can develop representational artefacts to support a discussion between architects and blind people, and how these artefacts mediate the discussion. We performed a 3-month focussed ethnography using participant observation in an architectural design firm involved in a competition design. In agreement with the architects, we introduced two blind persons as user/expert at distinct moments. Together, we developed and tested visuo-haptic design representations. We analyse how these representations were conceived and used. We first discuss how the representations perceptually and cognitively support verbal and gestural communication. Secondly, we explain why, after having analysed their use in a design meeting, we move from the term ‘tactile model’ to ‘visuo-haptic model’. And thirdly, we discuss how the ownership of the models shifts and how that relates to the ownership of the design. To conclude, visuo-haptic design representations can support aspects of co-design with blind people, but raise further questions regarding the role of representation in co-design in general.

Finance as ‘bizarre bazaar’: Using documents as a source of ethnographic knowledge

Markets and finance have long attracted ethnographic interest but the nature of their activity – opaque, secretive and increasingly placeless – precludes traditional ethnographic fieldwork. In this article, we propose documents as an alternative access point to these organisations as an ethnographic object of enquiry. Documents do not only present a written record, but they also enact relationships and encode tacit understandings. We develop Geertz’s work on the bazaar by taking an indirect route to access the field site – collateralised debt obligation – through documents. In reading these documents, we assume the position of investors who, in the absence of alternative publicly available information, are dependent on the documentary accounts made available to them by the sellers. These media act in ways that are similar to tourist guidebooks, a comparison we use to reframe the exchange as one that builds upon sociocultural relations rather than the abstract market relationships described by mainstream economists. We propose that these documents are not merely representational artefacts of the organisation but serve to establish and maintain social relationships between buyers and sellers through the management, standardisation and ritualisation of information disclosed to the investor.

Visual methods and voice in disabled childhoods research: troubling narrative authenticity

Visual methods are a popular way of engaging children and young people in research. Their growth comes out of a desire to make research practice more appropriate and meaningful to them. The auteur approach emphasises the need to explore with young participants why they produce the images they do, so that adult researchers do not impose their own readings. This article, while recognising the value of such visual techniques, argues that their benefit is not that they are more age appropriate, or that they are more authentic. Instead it lies in their capacity to display the social influences on how participants, of any age, represent themselves. The article does so through discussion of an Economic and Social Research Council research project, which made use of visual and other creative methods, undertaken in the UK with disabled young people. The research involved narrative and photo elicitation interviews, the production of photo journals, and creative practice workshops aimed at making representational artefacts. Through analysing the photography, the journals and interviews the article examines what it was research participants sought to capture and also what influenced the types of photographs they gathered and the type of person they wanted to represent. We argue that they aimed to counter negative representations of disability by presenting themselves as happy, active and independent, in doing so they drew from broader visual iconography that values certain kinds of disabled subject, while disvaluing others.

Representational artefacts in social problem solving: A study from occupational rehabilitation

This paper highlights the role of design and designers in the creation of visual artefacts as boundary objects to be used in social problem solving. Many problems in human service systems can only be solved by purposive action amongst the stakeholders of the system but each stakeholder has only a partial view of the system. Boundary objects that present a multi-stakeholder perspective can facilitate problem solving by creating representations of the system that are meaningful to all stakeholders. In this study we used sensemaking (often a textual practice) and visualisation to create a high complexity representational artefact to enable shared understandings of an occupational rehabilitation system.

Optimal fluxes and Reynolds stresses

It is remarked that fluxes in conservation laws, such as the Reynolds stresses in the momentum equation of turbulent shear flows, or the spectral energy flux in anisotropic turbulence, are only defined up to an arbitrary solenoidal field. While this is not usually significant for long-time averages, it becomes important when fluxes are modelled locally in large-eddy simulations, or in the analysis of intermittency and cascades. As an example, a numerical procedure is introduced to compute fluxes in scalar conservation equations in such a way that their total integrated magnitude is minimised. The result is an irrotational vector field that derives from a potential, thus minimising sterile flux ‘circuits’. The algorithm is generalised to tensor fluxes and applied to the transfer of momentum in a turbulent channel. The resulting instantaneous Reynolds stresses are compared with their traditional expressions, and found to be substantially different. This suggests that some of the alleged shortcomings of simple subgrid models may be representational artefacts, and that the same may be true of the intermittency properties of the turbulent stresses.

Security knowledge representation artifacts for creating secure IT systems

The creation of secure applications is more than ever a complex task because it requires from system engineers increasing levels of knowledge in security requirements, design and implementation. In fact, the fast increasing size and volatility of this knowledge has reached a point in which it is unrealistic to expect that system engineers can keep up to date with it. The most prominent paradigm for addressing this problem is the use of security patterns to communicate security knowledge from experts to system designers. This, and other security artifacts, have proved their utility and benefits in the past years, improving the way security is taken into account by system engineers and developers. On the other hand, these artifacts have some limitations that have prevented them from becoming more widespread. In particular, security patterns are human-oriented and as such heavily based on natural language, which implies intrinsic high degrees of imprecision and ambiguity. In our opinion, we need to make the move from purely human-oriented artifacts to hybrid artifacts that convey information for both humans (engineers and designers) and computer tools (engineering and development environments). Therefore, we have created a new security knowledge representation artifact that aims to cover the needs of system engineers and help them not only in applying a solution, but also in understanding the security aspects of a given domain as a highly-related set of security concepts (e.g. properties, requirements, solutions, etc.). This artifact, called Domain Security Metamodel (DSM), is, as its name suggests, domain-specific and contains information about all security aspects that are relevant in a specific domain (e.g. embedded systems, web services, etc.). The DSM contains security solutions that implement the security properties of the specific domains. That way, when users apply them into their system models the solutions for development time can be integrated directly and naturally. In order to describe our approach in a useful way we use a running example based on the Web Service Security (WS-Security) specification.

More than meets the eye: patterns and shifts in middle school mathematics teachers’ descriptions of models

Modeling is a major topic of interest in mathematics education. However, the field’s definition of models is diverse. Less is known about what teachers identify as mathematical models, even though it is teachers who ultimately enact modeling activities in the classroom. In this study, we asked nine middle school teachers with a variety of academic backgrounds and teaching experience to collect data related to one familiar physical phenomenon, cooling liquid. We then asked each participant to construct a model of that phenomenon, describe why it was a model, and identify whether a variety of artifacts representing the phenomenon also counted as models during a semi-structured interview. We sought to identify: what do mathematics teachers attend to when describing what constitutes a model? And, how do their attentions shift as they engage in different activities related to models? Using content analysis, we documented what features and purposes teachers attended to when describing a mathematical model. When constructing their own model, they focused on the visual form of the model and what quantitative information it should include. When deciding whether particular representational artifacts constituted models, they focused on how the representations reflected the system under study, and what purposes those representations could serve in further understanding that system. These findings suggest teachers may have multiple understandings of models, which are active at different times and reflect different perspectives. This has implications for research, teacher education, and professional development.

Developing a Model of Distributed Sensemaking: A Case Study of Military Analysis

In this paper, we examine the role of representational artefacts in sensemaking. Embodied within representational media, such as maps, charts and lists, are a number of affordances, which can furnish sensemakers with the ability to perform tasks that may be difficult to do inside the head. Presented here is a study of sensemaking in action. We conducted a study of military intelligence analysts carrying out a training exercise, the analysis of which focuses on the use of external task-specific representations. We present a discussion of the findings of our study in the form of a model of distributed sensemaking. Our model concentrates on the interaction of information and various representational artefacts, leading to the generation of insights and a situation picture. We also introduce a number of levels of description for examining the properties and affordances offered by representational artefacts and their role in the sensemaking process.

Ontology and database schema: What’s the difference?

This paper analyzes the similarities and differences between an ontology (focused on meaning), and a database schema (focused on data). We address questions about purpose, representation, creation, usage and semantics of each. We distill out twenty-five features that characterize these two representational artifacts, the majority of which are relevant to both. Each has a strong semantic heritage using formal logic to build conceptual models of some subject matter. And while there are differences in 90% of the features, the differences are mostly historical, not technical. We identify pros and cons for each, and notice that there is usually no free lunch. The disadvantage that you think you are getting rid of may show up elsewhere in a different and unexpected way. We close by considering how ontology contributes to enterprise data integration. The emergence of using URIs as global identifiers (e.g. in OWL) dramatically enhances data integration as well as schema reuse and sharing. The primary focus on meaning helps ontology break through a lot of unnecessary complexity that exists in large traditional databases and greatly simplifies the process of integration. Ontology is providing a glimmer of light at the end of the tunnel for enterprise-wide data integration.

The Oldest Portable Art: the Aurignacian Ivory Figurines from the Swabian Jura (Southwest Germany)

Four cave sites in the Swabian Jura have yielded a spectacular array of portable art: Hohle Fels, Geißenklösterle, Vogelherd, and Hohlenstein-Stadel. Some of these ivory figurines are well known, and others less so. In all, about fifty such objects or fragments of objects are known from the region. They occur in the same archeological levels where have been found musical instruments (flutes) and early examples of painting. Drawing on recent research as well as archival records from earlier excavations, this contribution chose a simple question- and-answer format in order to revisit issues of the interpretation of Aurignacian portable art objects, which constitute some of the earliest known representational artifacts in Europe, and perhaps the world. Subjects addressed include informations about raw materials, iconography, dating, context and the possible social foundations underlying the production and use of these objects.

Diagrammatic reasoning

Many types of everyday and specialized reasoning depend on diagrams: we use maps to find our way, we draw graphs and sketches to communicate concepts and prove geometrical theorems, and we manipulate diagrams to explore new creative solutions to problems. The active involvement and manipulation of representational artifacts for purposes of thinking and communicating is discussed in relation to C.S. Peirce’s notion of diagrammatical reasoning. We propose to extend Peirce’s original ideas and sketch a conceptual framework that delineates different kinds of diagram manipulation: Sometimes diagrams are manipulated in order to profile known information in an optimal fashion. At other times diagrams are explored in order to gain new insights, solve problems or discover hidden meaning potentials. The latter cases often entail manipulations that either generate additional information or extract information by means of abstraction. Ideas are substantiated by reference to ethnographic, experimental and historical examples.