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Abstract
Often defined by its characteristic and heavy use of autotuned vocals, the microgenre hyper-pop is perhaps just as recognizable for the ubiquitous transness of its most important artists. Reading trans hyper-pop performers Blackwinterwells, laura les, and quinn's uses of the figure of the "bedsheet ghost," this article explores trans artists' responses to late capitalism's regimes of alienation as a means of desubjectivization through strategies of becoming spectral—resisting commodification through a spectral orientation toward their sonic corporeality.

AbstractWe sketch the history of spectral ranking—a general umbrella name for techniques that apply the theory of linear maps (in particular, eigenvalues and eigenvectors) to matrices that do not represent geometric transformations, but rather some kind of relationship between entities. Albeit recently made famous by the ample press coverage of Google's PageRank algorithm, spectral ranking was devised more than 60 years ago, almost exactly in the same terms, and has been studied in psychology, social sciences, bibliometrics, economy, and choice theory. We describe the contribution given by previous scholars in precise and modern mathematical terms: Along the way, we show how to express in a general way damped rankings, such as Katz's index, as dominant eigenvectors of perturbed matrices, and then use results on the Drazin inverse to go back to the dominant eigenvectors by a limit process. The result suggests a regularized definition of spectral ranking that yields for a general matrix a unique vector depending on a boundary condition.

We sketch the history of spectral ranking - a general umbrella name for techniques that apply the theory of linear maps (in particular, eigenvalues and eigenvectors) to matrices that do not represent geometric transformations, but rather some kind of relationship between entities. Albeit recently made famous by the ample press coverage of Google's PageRank algorithm, spectral ranking was devised more than 60 years ago, almost exactly in the same terms, and has been studied in psychology, social sciences, bibliometrics, economy, and choice theory. We describe the contribution given by previous scholars in precise and modern mathematical terms: Along the way, we show how to express in a general way damped rankings, such as Katz's index, as dominant eigenvectors of perturbed matrices, and then use results on the Drazin inverse to go back to the dominant eigenvectors by a limit process. The result suggests a regularized definition of spectral ranking that yields for a general matrix a unique vector depending on a boundary condition.

Abstract
Deep ecology holds that profound inner transformation is a necessary part of entering an ecological age and building a society that includes nonhuman lifeforms in meaningful ways. I am going to argue that this is definitely the case, and that the shock of realizing the truth of the Anthropocene amounts to a first step on a pathway that one might accurately see as 'spiritual,' if only for its profundity—though certainly not for any disengagement with the political.
What this transformation amounts to in part is a new way of experiencing 'selfhood' or the 'inner self' (or whatever we want to call it). This new mode sees existence to contain a necessarily spectral dimension. While it obviously makes reductionist forms of materialism untenable, such a dimension also troubles some of the ideas we might have about spirituality. I seek to show how the spectral is a vital element of being an ecological being, and argue that this spectrality affects how we conceptualize all kinds of other domains, such as ethics, politics and art.

7 págs., 7 figs., 1 tab. -- ; The technical committee TC 2-90 ("LED Reference spectrum for photometer calibration") has been recently created by CIE to investigate, select and publish an LED Reference spectrum to complement the CIE Standard Illuminant A in photometric calibrations. This task additionally requires defining a spectral mismatch index to account for the match of spectral power distributions (SPDs) of real sources to the selected reference spectrum. The objective of this work is to propose such a spectral mismatch index, and to evaluate its performance using real and representative LED spectral power distributions and relative spectral responsivities of photometers. ; The work leading to this study is partly funded by the European Metrology Programme for Innovation and Research (EMPIR) Project 15SIB07 PhotoLED 'Future Photometry Based on Solid State Lighting Products'. The EMPIR initiative is cofunded by the European Union's Horizon 2020 research and innovation programme and the EMPIR Participating States.

7 págs., 7 figs., 1 tab. ; The technical committee TC 2-90 ("LED Reference spectrum for photometer calibration") has been recently created by CIE to investigate, select and publish an LED Reference spectrum to complement the CIE Standard Illuminant A in photometric calibrations. This task additionally requires defining a spectral mismatch index to account for the match of spectral power distributions (SPDs) of real sources to the selected reference spectrum. The objective of this work is to propose such a spectral mismatch index, and to evaluate its performance using real and representative LED spectral power distributions and relative spectral responsivities of photometers. ; The work leading to this study is partly funded by the European Metrology Programme for Innovation and Research (EMPIR) Project 15SIB07 PhotoLED 'Future Photometry Based on Solid State Lighting Products'. The EMPIR initiative is cofunded by the European Union's Horizon 2020 research and innovation programme and the EMPIR Participating States.

Visitors to the Arctic enter places that have been traditionally imagined as otherworldly. This strangeness fascinated audiences in nineteenth-century Britain when the idea of the heroic explorer voyaging through unmapped zones reached its zenith. The Spectral Arctic re-thinks our understanding of Arctic exploration by paying attention to the importance of dreams and ghosts in the quest for the Northwest Passage. The narratives of Arctic exploration that we are all familiar with today are just the tip of the iceberg: they disguise a great mass of mysterious and dimly lit stories beneath the surface. In contrast to oft-told tales of heroism and disaster, this book reveals the hidden stories of dreaming and haunted explorers, of frozen mummies, of rescue balloons, visits to Inuit shamans, and of the entranced female clairvoyants who travelled to the Arctic in search of John Franklin's lost expedition. Through new readings of archival documents, exploration narratives, and fictional texts, these spectral stories reflect the complex ways that men and women actually thought about the far North in the past. This revisionist historical account allows us to make sense of current cultural and political concerns in the Canadian Arctic about the location of Franklin's ships.

The question of the human and the nonhuman, how they are produced and inscribed on bodies, has been the subject to a burgeoning amount of research. In this paper I'd like to offer an analysis of what seems to constitute a gap in our theories of the nonhuman, that is the question of dead – radically inert, mute and vulnerable – bodies. By reference to a Greek word sema, which denominated both a 'tomb', a 'sign' and a 'trace', I would like to investigate the three-fold context in which the dead bodies are enmeshed: the material, the discursive and the spectral one. Drawing on the concept of the 'remnant' (G. Agamben) and the 'spectre' (J. Derrida) I will pose a question regarding the ways in which dead bodies are included in power relations, powers of visibility and normalisation, and how they may challenge them. Finally, I will offer a project of 'materialistic hauntology', an ethical stand towards bodies that are in course of dematerialising, but that still matter.

This article explores the problem of torture and secrecy in the archives of conspiracies, seditions, and black resistance movements in the colonial Americas of the late eighteenth and early nineteenth centuries. Using the example of the Tailors' Conspiracy, a seditious movement that occurred in 1798 in the state of Bahia, Brazil, the author argues for the importance of shifting from historical methods that attempt to recover or reveal evidence of secrets within archival records to a focus on why both judges and suspects were motivated to keep secrets during interrogations. For their part, African-descended subjects who were arrested kept secrets both to avoid capital punishment and to ensure that other participants of the movement could not be captured and interrogated. Judges were likely motivated to keep evidence of torture secret because career advancement in the Portuguese imperial judiciary was based on how magistrates performed during interrogations. These two motivations for keeping secrets depended on one another, as subalterns kept secrets in an effort to thwart the power of judges and judges themselves guarded secrets that might otherwise show that they could not discover the full extent of the seditious movement or capture all of its supporters. Thus, shifting from the recovery of secrets to dwelling on secrets forged by both prosecutors and defendants in colonial interrogation records helps better elucidate the importance of secrecy both to black political organization and to maintenance of colonial rule.