146,615 research outputs found
Human cloning in film: horror, ambivalence, hope
Fictional filmic representations of human cloning have shifted in relation to the 1997 announcement of the birth of Dolly the cloned sheep, and since therapeutic human cloning became a scientific practice in the early twentieth century. The operation and detail of these shifts can be seen through an analysis of the films The Island (2005) and Aeon Flux (2005). These films provide a site for the examination of how these changes in human cloning from fiction to practice, and from horror to hope, have been represented and imagined, and how these distinctions have operated visually in fiction, and in relation to genre
Metacognition and Reflection by Interdisciplinary Experts: Insights from Cognitive Science and Philosophy
Interdisciplinary understanding requires integration of insights from
different perspectives, yet it appears questionable whether disciplinary experts
are well prepared for this. Indeed, psychological and cognitive scientific studies
suggest that expertise can be disadvantageous because experts are often more biased
than non-experts, for example, or fixed on certain approaches, and less flexible in
novel situations or situations outside their domain of expertise. An explanation is
that expertsâ conscious and unconscious cognition and behavior depend upon their
learning and acquisition of a set of mental representations or knowledge structures.
Compared to beginners in a field, experts have assembled a much larger set of
representations that are also more complex, facilitating fast and adequate perception
in responding to relevant situations. This article argues how metacognition should be
employed in order to mitigate such disadvantages of expertise: By metacognitively
monitoring and regulating their own cognitive processes and representations,
experts can prepare themselves for interdisciplinary understanding. Interdisciplinary
collaboration is further facilitated by team metacognition about the team, tasks,
process, goals, and representations developed in the team. Drawing attention to
the need for metacognition, the article explains how philosophical reflection on the
assumptions involved in different disciplinary perspectives must also be considered
in a process complementary to metacognition and not completely overlapping with
it. (Disciplinary assumptions are here understood as determining and constraining
how the complex mental representations of experts are chunked and structured.) The
article concludes with a brief reflection on how the process of Reflective Equilibrium
should be added to the processes of metacognition and philosophical reflection in
order for experts involved in interdisciplinary collaboration to reach a justifiable
and coherent form of interdisciplinary integration. An Appendix of âPrompts or
Questions for Metacognitionâ that can elicit metacognitive knowledge, monitoring,
or regulation in individuals or teams is included at the end of the article
The nature of representation in Feynman diagrams
After a brief presentation of Feynman diagrams, we criticizise the idea that
Feynman diagrams can be considered to be pictures or depictions of actual
physical processes. We then show that the best interpretation of the role they
play in quantum field theory and quantum electrodynamics is captured by Hughes'
Denotation, Deduction and Interpretation theory of models (DDI), where models
are to be interpreted as inferential, non-representational devices constructed
in given social contexts by the community of physicists
The Profiling Potential of Computer Vision and the Challenge of Computational Empiricism
Computer vision and other biometrics data science applications have commenced
a new project of profiling people. Rather than using 'transaction generated
information', these systems measure the 'real world' and produce an assessment
of the 'world state' - in this case an assessment of some individual trait.
Instead of using proxies or scores to evaluate people, they increasingly deploy
a logic of revealing the truth about reality and the people within it. While
these profiling knowledge claims are sometimes tentative, they increasingly
suggest that only through computation can these excesses of reality be captured
and understood. This article explores the bases of those claims in the systems
of measurement, representation, and classification deployed in computer vision.
It asks if there is something new in this type of knowledge claim, sketches an
account of a new form of computational empiricism being operationalised, and
questions what kind of human subject is being constructed by these
technological systems and practices. Finally, the article explores legal
mechanisms for contesting the emergence of computational empiricism as the
dominant knowledge platform for understanding the world and the people within
it
The mind's eye in blindfold chess
Visual imagery plays an important role in problem solving, and research into blindfold chess has provided a wealth of empirical data on this question. We show how a recent theory of expert memory (the template theory, Gobet & Simon, 1996, 2000) accounts for most of these data. However, how the mindâs eye filters out relevant from irrelevant information is still underspecified in the theory. We describe two experiments addressing this question, in which chess games are presented visually, move by move, on a board that contains irrelevant information (static positions, semi-static positions, and positions changing every move). The results show that irrelevant information affects chess masters only when it changes during the presentation of the target game. This suggests that novelty information is used by the mindâs eye to select incoming visual information and separate âfigureâ and âground.â Mechanisms already present in the template theory can be used to account for this novelty effect
Conceptually driven and visually rich tasks in texts and teaching practice: the case of infinite series
The study we report here examines parts of what Chevallard calls the institutional dimension of the studentsâ learning experience of a relatively under-researched, yet crucial, concept in Analysis, the concept of infinite series. In particular, we examine how the concept is introduced to students in texts and in teaching practice. To this purpose, we employ Duval's Theory of Registers of Semiotic Representation towards the analysis of 22 texts used in Canada and UK post-compulsory courses. We also draw on interviews with in-service teachers and university lecturers in order to discuss briefly teaching practice and some of their teaching suggestions. Our analysis of the texts highlights that the presentation of the concept is largely a-historical, with few graphical representations, few opportunities to work across different registers (algebraic, graphical, verbal), few applications or intra-mathematical references to the concept's significance and few conceptually driven tasks that go beyond practising with the application of convergence tests and prepare students for the complex topics in which the concept of series is implicated. Our preliminary analysis of the teacher interviews suggests that pedagogical practice often reflects the tendencies in the texts. Furthermore, the interviews with the university lecturers point at the pedagogical potential of: illustrative examples and evocative visual representations in teaching; and, student engagement with systematic guesswork and writing explanatory accounts of their choices and applications of convergence tests
A Deflationary Account of Mental Representation
Among the cognitive capacities of evolved creatures is the capacity to represent. Theories in cognitive neuroscience typically explain our manifest representational capacities by positing internal representations, but there is little agreement about how these representations function, especially with the relatively recent proliferation of connectionist, dynamical, embodied, and enactive approaches to cognition. In this talk I sketch an account of the nature and function of representation in cognitive neuroscience that couples a realist construal of representational vehicles with a pragmatic account of mental content. I call the resulting package a deflationary account of mental representation and I argue that it avoids the problems that afflict competing accounts
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