scholarly journals Is Testimonial Injustice Epistemic? Let Me Count the Ways

Hypatia ◽  
2021 ◽  
pp. 1-19
Author(s):  
Manuel Almagro Holgado ◽  
Llanos Navarro Laespada ◽  
Manuel de Pinedo García
Keyword(s):  
Close Connection ◽  
Epistemic Agency ◽  
Knowledge Ascriptions ◽  
Testimonial Injustice ◽  
Miranda Fricker ◽  
Do So ◽  
Secondary Sense

Abstract Miranda Fricker distinguishes two senses in which testimonial injustice is epistemic. In the primary sense, it is epistemic because it harms the victim as a giver of knowledge. In the secondary sense, it is epistemic, more narrowly, because it harms the victim as a possessor of knowledge. Her characterization of testimonial injustice has raised the following objection: testimonial injustice is not always an epistemic injustice, in the narrow, secondary sense, as it does not always entail that the victim is harmed as a knowledge-possessor. By adopting a perspective based on Robert Brandom's normative expressivism, we respond to this objection by arguing that there is a close connection, conceptual and constitutive rather than merely causal, between the primary and the secondary epistemic harms of testimonial injustice, such that testimonial injustice always involves both kinds of epistemic harm. We do so by exploring the logic and functioning of belief and knowledge ascriptions in order to highlight three ways in which the secondary epistemic harm caused by testimonial injustice crystallizes: it undermines the epistemic agency of the victim, the epistemic friction necessary for knowledge, and the possibility of occupying particular epistemic nodes.

scholarly journals Objects or Others? Epistemic Agency and the Primary Harm of Testimonial Injustice

2020 ◽  
Vol 23 (5) ◽  
pp. 831-845 ◽  
Author(s):  
Aidan McGlynn
Keyword(s):  
Cluster Analysis ◽  
Epistemic Agency ◽  
Testimonial Injustice ◽  
Miranda Fricker

AbstractThis paper re-examines the debate between those who, with Miranda Fricker, diagnose the primary, non-contingent harm of testimonial injustice as a kind of epistemic objectification and those who contend it is better thought of as a kind of epistemic othering. Defenders of the othering account of the primary harm have often argued for it by presenting cases of testimonial injustice in which the testifier’s epistemic agency is affirmed rather than denied, even while their credibility is unjustly impugned. In previous work, I have instead argued that such cases suggest that we need to enrich our conception of epistemic objectification in ways encouraged by Martha Nussbaum’s cluster analysis of objectification. Here I continue to make the case for this approach, and I consider the othering account in more detail. I focus in particular on Gaile Pohlhaus Jr.’s arguments for a version of the othering account in terms of the notion of derivatization, which turns on the idea that only such an account can enable us to properly understand the harms of testimonial injustice, in particular the ways in which it interferes with a subject’s epistemic agency and autonomy, and I’ll argue that such arguments should not sway us. Finally, I’ll further support my contention that it is illuminating and helpful to think of the primary harm of testimonial injustice in terms of epistemic objectification, though I will concede that the notion of epistemic othering may offer further helpful resources for understanding how subjects can be harmed by testimonial injustice.

Typecasts, Tokens, and Spokespersons: A Case for Credibility Excess as Testimonial Injustice

Hypatia ◽  
2016 ◽  
Vol 31 (3) ◽  
pp. 485-501 ◽  
Author(s):  
Emmalon Davis
Keyword(s):  
Testimonial Injustice ◽  
Miranda Fricker

Miranda Fricker maintains that testimonial injustice is a matter of credibility deficit, not excess. In this article, I argue that this restricted characterization of testimonial injustice is too narrow. I introduce a type of identity‐prejudicial credibility excess that harms its targets qua knowers and transmitters of knowledge. I show how positive stereotyping and prejudicially inflated credibility assessments contribute to the continued epistemic oppression of marginalized knowers. In particular, I examine harms such as typecasting, compulsory representation, and epistemic exploitation and consider what hearers are obligated to do in response to these injustices. I argue that because epistemic harms to marginalized knowers also arise from prejudicially inflated assessments of their credibility, the virtue of testimonial justice must be revised to remedy them.

scholarly journals Towards Reduced CNNs for De-Noising Phase Images Corrupted with Speckle Noise

Photonics ◽  
2021 ◽  
Vol 8 (7) ◽  
pp. 255
Author(s):  
Marie Tahon ◽  
Silvio Montresor ◽  
Pascal Picart
Keyword(s):  
Phase Error ◽  
Speckle Noise ◽  
Experimental Conditions ◽  
Benchmark Data ◽  
Wide Range ◽  
Phase Images ◽  
Different Depths ◽  
Phase Data ◽  
Do So

Digital holography is a very efficient technique for 3D imaging and the characterization of changes at the surfaces of objects. However, during the process of holographic interferometry, the reconstructed phase images suffer from speckle noise. In this paper, de-noising is addressed with phase images corrupted with speckle noise. To do so, DnCNN residual networks with different depths were built and trained with various holographic noisy phase data. The possibility of using a network pre-trained on natural images with Gaussian noise is also investigated. All models are evaluated in terms of phase error with HOLODEEP benchmark data and with three unseen images corresponding to different experimental conditions. The best results are obtained using a network with only four convolutional blocks and trained with a wide range of noisy phase patterns.

Biochemical characterization of a cortexless mutant of a variant of Bacillus cereus

1976 ◽  
Vol 22 (7) ◽  
pp. 1007-1012 ◽  
Author(s):  
Susanne M. Pearce
Keyword(s):  
Cell Wall ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Bacillus Cereus ◽  
Biochemical Characterization ◽  
Diaminopimelic Acid ◽  
Peptidoglycan Synthesis ◽  
Biochemical Lesion ◽  
Do So

Previous studies on this cortexless mutant of Bacillus cereus var. alesti indicated that the forespore membrane was the site of the biochemical lesion. This hypothesis is supported by the results presented here: fatty acid composition of sporulating cells of the mutant is altered, while in vegetative cells it is comparable to the parent; soluble precursors of peptidoglycan synthesis are accumulated in the mutant, at the time of cortex formation; homogenates of the mutant prepared at the time of cortex formation are unable to incorporate tritiated diaminopimelic acid into peptidoglycan, while homogenates of cells forming germ cell wall do so to an extent comparable to that of the parent; lipid-linked intermediates are formed by the mutant as in the parent. Apparently the mutant is unable either to transfer disaccharide penta-peptide units from the carrier lipid to the growing peptidoglycan acceptor, or to transport lipid-linked intermediates across the forespore membrane.

scholarly journals Mathematics Classroom Assessment: A Framework for Designing Assessment Tasks and Interpreting Students’ Responses

2021 ◽  
Vol 11 (3) ◽  
pp. 1088-1106
Author(s):  
Eleni Demosthenous ◽  
Constantinos Christou ◽  
Demetra Pitta-Pantazi
Keyword(s):  
Teaching And Learning ◽  
Classroom Assessment ◽  
Mathematics Classroom ◽  
Mathematics Learning ◽  
Fourth Grade ◽  
Mathematics Assessment ◽  
Assessment Tasks ◽  
Grade Classroom ◽  
Do So

Classroom assessment could contribute substantially to improving students’ mathematics learning. The process of classroom assessment involves decisions about how to elicit evidence, how to interpret it, and how to use it for teaching and learning. However, the field still needs to further explore how assessment tasks could guide forthcoming instructional adjustments in the mathematics classroom. Towards the endeavor of unpacking the classroom assessment, we present a framework that provides a lens to capture the interplay between the design of mathematics assessment tasks and the analysis of students’ responses. To do so, we relied on existing frameworks of mathematics assessment tasks, and on issues that pertain to the design of tasks. The proposed framework consists of three types of mathematics assessment tasks, their respective competencies, and the characterization of students’ responses. The framework is exemplified with students’ responses from a fourth-grade classroom, and is also used to sketch different students’ profiles. Issues regarding the interpretation of students’ responses and the planning of instructional adjustments are discussed.

scholarly journals A Viral Ecogenomics Framework To Uncover the Secrets of Nature’s “Microbe Whisperers”

mSystems ◽  
2019 ◽  
Vol 4 (3) ◽  
Author(s):  
Simon Roux
Keyword(s):  
Cell Metabolism ◽  
Ecosystem Functions ◽  
Biological Knowledge ◽  
Viral Sequence ◽  
Molecular Tools ◽  
Microbial Cells ◽  
Health And Disease ◽  
Virus Genomes ◽  
Do So

ABSTRACTMicrobes drive critical ecosystem functions and affect global nutrient cycling along with human health and disease. They do so under strong constraints exerted by viruses, which shape microbial communities’ structure and shift host cell metabolism during infection. While the majority of viruses and their associated impacts remain poorly characterized, a number of mechanisms by which viruses alter microbial cells and ecosystems have already been revealed. Here I outline how a comprehensive host-resolved mapping of viral sequence space will enable a thorough characterization of virus-encoded mechanisms for microbial manipulation. With soon-to-be millions of virus genomes obtained from metagenomes, one of the major challenges resides in the development of methods for high-throughput and high-resolution virus-host pairing, before multi-omics approaches can be leveraged to fully decipher virus-host dynamics in nature. Beyond novel fundamental biological knowledge, these studies will likely provide new molecular tools enabling a precise engineering of microbial cells and communities.

‘To be or not to be’: Hamlet’s Humanistic Quaestio

2019 ◽  
Vol 70 (296) ◽  
pp. 640-658
Author(s):  
Vanessa Lim
Keyword(s):  
Rhetorical Theory ◽  
The Subject ◽  
The Right ◽  
The University ◽  
Scholarly Attention ◽  
Do So

Abstract Hamlet’s ‘To be or not to be’ speech has long been the subject of intense scholarly attention. By situating the speech against the backdrop of classical and Renaissance rhetorical theory, this essay demonstrates that there is still much more to be said about it. The speech ostensibly examines a quaestio infinita or a thesis, and follows the rhetorical rule that the right way to do so is by the invocation of commonplaces. This reading of Hamlet’s speech is not only consistent with Shakespeare’s characterization of the university-educated prince, who frequently invokes commonplaces, but also has significant implications for our understanding of the play and Shakespeare’s own practice as a writer. The book that Hamlet is reading could well be his own commonplace collection, and it is perhaps in looking up his entries under the heading of ‘Death’ that Hamlet finds what he needs in order to examine his quaestio.

scholarly journals Dunford-Pettis and strongly Dunford-Pettis operators on L1(μ)

1989 ◽  
Vol 31 (1) ◽  
pp. 49-57 ◽  
Author(s):  
James R. Holub
Keyword(s):  
Positive Operator ◽  
Finite Measure ◽  
Regular Operator ◽  
Mathematical Economics ◽  
Canonical Injection ◽  
Do So ◽  
Convergent Sequences

Motivated by a problem in mathematical economics [4] Gretsky and Ostroy have shown [5] that every positive operator T:L1[0, 1] → c0 is a Dunford-Pettis operator (i.e. T maps weakly convergent sequences to norm convergent ones), and hence that the same is true for every regular operator from L1[0, 1] to c0. In a recent paper [6] we showed the converse also holds, thereby characterizing the D–P operators by this condition. In each case the proof depends (as do so many concerning D–P operators on Ll[0, 1]) on the following well-known result (see, e.g., [2]): If μ is a finite measure, an operator T:L1(μ) → E is a D–P operator is compact, where i:L∞(μ) → L1(μ) is the canonical injection of L∞(μ) into L1(μ). If μ is not a finite measure this characterization of D–P operators is no longer available, and hence results based on its use (e.g. [5], [6]) do not always have straightforward extensions to the case of operators on more general L1(μ) spaces.

scholarly journals Perfectionism in Practice: Shusterman’s Place in Recent Pragmatism

2015 ◽  
Vol 12 (1) ◽  
pp. 156-179
Author(s):  
Mathias Girel
Keyword(s):  
Richard Rorty ◽  
The Body ◽  
Political Dimensions ◽  
Do So

Building on recent texts, I give a characterization of Richard Shusterman’s specific variant of pragmatism, understood as a melioristic or perfectionist pragmatism, where ethical and political dimensions are deeply intertwined with the epistemological one. To do so, I focus on what seems to be Shusterman’s latest contribution to his interrupted dialogue with Richard Rorty in Thinking through the Body.

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