cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Gli echi dell’icona. La moltiplicazione visuale del sé e i suoi modelli invisibili
Creators: name: Martellozzo, Nicola
Publisher: name: ECHO
Year: 2019
Subjects: Instagram; digital-scape; iconoclasm; visual imaginaries; ranking algorithm

description: Digital anthropology has demonstrated that the externalization of the Self is a cultural technique for the construction of digital identities, in which the statement of the Self is realized through a steady multiplication. Self-images should not be considered according to their status of reality (truth vs. fiction) but to the effects of reality they produce, linked to the construction, reproduction and migration of images on the web. Considering the performative dimension of images, it is possible to highlight an irreducible surplus of meaning, particularly in the self-representations proposed in (and by) social media, where the image becomes an icon. We choose this term because of its high semantic value and its ambivalence between its different meanings in the religious, communicative and IT contexts. Instead of creating ambiguity, this intersection of perspectives makes the concept of ‘icon’ capable of describing a complex reality such as the digital image. To investigate the icon’s effects of reality, we focus on an additional historical phenomenon, which is fundamental for the status of the image in the West.
description: ECHO, N. 1 (2019): Il soggetto, la realtà, la verità nel tempo delle loro determinazioni digitali. Nuovi linguaggi, nuove narrazioni.
Junctions of three quantum wires for spin 1/2 electrons
Creators: name: Hou, Chang-Yu
name: Chamon, Claudio
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the effects of electron-electron interactions on the transport properties of a junction of three quantum wires enclosing a magnetic flux. The wires are modeled as single channel spin-1/2 Tomonaga-Luttinger liquids. The system exhibits a rich phase diagram as a function of the electronic interaction strength, which includes a chiral fixed point with an asymmetric current flow highly sensitive to the sign of the flux, and another fixed point where pair tunneling dominates, similarly to the case of spinless electrons. While in the case of spinless electrons the perturbations that correspond to unequal couplings between the three wires are always irrelevant, we find that, when the electron spin is included, there are small regions in the phase diagram where a current flows only between two of the wires and the third wire is decoupled.
description: 9 figures
I social: una nuova mediatizzazione della politica? Il caso @matteosalviniofficial su Instagram
Creators: name: Ferretti, Andrea
Publisher: name: ECHO
Year: 2019
Subjects: mediatization; disintermediation; media logics; social media; hybrid media system; political communication.

description: This paper aims to rethink the features of ‘mediatized’ political communication within a ‘hybrid media system’ in which the social networks accounts of political leaders are becoming increasingly important. Firstly, the paper summarizes the main aspects of ‘mediatisation’, as it has been analysed in relation to the mass media system. Then, we discuss the concepts of ‘disintermediation’ and the new forms of ‘mediation’ specific to social platforms. The analysis shows that ‘disintermediation’ does not lead to the end of ‘mediatization’. On the contrary, we emphasise the need to support the ‘mass media logic’ based on the interweaving of ‘professional norms’, ‘entertainment’, and a ‘social logic’ built on the ‘definition of identity’ by selectively sharing online content and exploiting the creative potential of digital media. Politicians now prioritise social media over traditional media to play the role of ‘social opinion leaders’. From these hypotheses, we analyse the posts published between January 2019 and March 2019 on the ‘matteosalviniofficial’ Instagram account. The analysis shows a tendency towards a ‘remediation’ of traditional contents and a creative use of digital images (which are adapted and modified) to convey a sense of immediacy. Additionally, the use of codes typical of mass media ‘mediatization’ emerged, but in a context in which they change their strategic role and take on a new communicative function. All these aspects have strengthened the idea that social media, in a relationship of complementarity and interdependence with mass media, steer political communication towards the selection and repetition of a coherent set of identity traits.
description: ECHO, N. 1 (2019): Il soggetto, la realtà, la verità nel tempo delle loro determinazioni digitali. Nuovi linguaggi, nuove narrazioni.
Analysing the impact of global demographic characteristics over the COVID-19 spread using class rule mining and pattern matching
Creators: name: Khan, Wasiq
name: Hussain, Abir
name: Khan, Sohail Ahmed
name: Al-Jumailey, Mohammed
name: Nawaz, Raheel
name: Liatsis, Panos
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Since the coronavirus disease (COVID-19) outbreak in December 2019, studies have been addressing diverse aspects in relation to COVID-19 and Variant of Concern 202012/01 (VOC 202012/01) such as potential symptoms and predictive tools. However, limited work has been performed towards the modelling of complex associations between the combined demographic attributes and varying nature of the COVID-19 infections across the globe. This study presents an intelligent approach to investigate the multi-dimensional associations between demographic attributes and COVID-19 global variations. We gather multiple demographic attributes and COVID-19 infection data (by 8 January 2021) from reliable sources, which are then processed by intelligent algorithms to identify the significant associations and patterns within the data. Statistical results and experts' reports indicate strong associations between COVID-19 severity levels across the globe and certain demographic attributes, e.g. female smokers, when combined together with other attributes. The outcomes will aid the understanding of the dynamics of disease spread and its progression, which in turn may support policy makers, medical specialists and society, in better understanding and effective management of the disease.
description: Diversity in global death rate due to COVID-19 and Variant of Concern 202012/01 (VOC 202012/01)
Linkages between Market Participation and Productivity: Results from a Multi-Country Farm Household Sample
Creators: name: Rios, Ana R.
name: Masters, William A.
name: Shively, Gerald E.
name: Rios, Ana R.
name: Masters, William A.
name: Shively, Gerald E.
Publisher: name: Unknown
Year: 2008
Subjects: subject: International Relations/Trade
subject: Marketing
subject: FOS: Economics and business
subject: Productivity Analysis

description: We build upon international trade literature to analyze the direction of causality between market participation and productivity. Cross-country household data from Tanzania, Vietnam and Guatemala are used in a 2SLS approach with market participation and productivity as endogenous variables. Results indicate that households with higher productivity tend to participate in agricultural markets regardless of market access factors. In contrast, having better market access does not necessarily lead to higher productivity. This finding suggests that investments in market access infrastructure provide minimal, if any, improvements in agricultural productivity; whereas programs targeted at enhancements in farm structure and capital have the potential to increase both productivity and market participation.
Vaporwave: la prima scena musicale nata nel web. anacronismi audiovisivi, tra ironia, nostalgia e memes
Creators: name: Montefinese, Lorenzo
Publisher: name: ECHO
Year: 2019
Subjects: vaporwave; music scene; Internet; anachronism; irony; cultural memory

description: Youth (sub)cultures and music scenes have usually been bound to geographic and social contexts. Yet, as the Internet became more ubiquitous in everyday practices and interactions, it has started to appear as the epicenter of trends and aesthetics which themselves portray new subjectivities. The main case is that of vaporwave, an Internet-born music genre and aesthetic. Gaining traction online around 2011 and reaching popularity across social media and digital platforms in the subsequent years, vaporwave is peculiar for its audio-visual anachronism. Its most recurrent visual elements include ‘80s and ‘90s technological artefacts, early digital graphics, classic sculptures, Japanese characters, exotic and metropolitan landscapes. Sonically, it heavily relies on samples from ‘80s and ‘90s semi forgotten pop, smooth jazz, new age and muzak, usually slowed down, looped and altered. Vaporwave is characterized by ambiguity, not only in its bizarre anachronism, but especially for what concerns its supposed political stance: addressing in almost grotesque ways late capitalism utopianism and obsolete technologies, together with cheesy muzak, vaporwave unmasks its hollowness; at the same time, though, its ironic critique seems distant and passive, showing a sense of disillusion and detached look at society. Moreover, vaporwave is exemplar insofar as it is based upon media and cultural archaeology, drawing on the past to act on and reshape cultural memory through its foregrounding of minor, obsolete or forgotten products, both technological and musical. Vaporwave visual aesthetics eventually became autonomous and spread as memes across the Internet, while the music has been losing popularity in more recent years. Nevertheless, vaporwave is a pivotal element in contemporary pop culture, as it may be considered the first music scene to fully grow, develop and rise to fame online. As such, Vaporwave is the first scene to be born into and designed for the Internet.
description: ECHO, N. 1 (2019): Il soggetto, la realtà, la verità nel tempo delle loro determinazioni digitali. Nuovi linguaggi, nuove narrazioni.
Höffner, Joseph Kardinal/ Immer, Präses Karl / Augoustinos, Metropolit: Miteinander vor Gott
Creators: name: Boeckler, Richard
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 31 Nr. 4 (1982): Ökumenische Rundschau, Band 31, Heft 4
Paradoxical predictions of liquid curtains with surface tension
Creators: name: Benilov, E. S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: This paper examines two-dimensional liquid curtains ejected at an angle to the horizontal and affected by gravity and surface tension. The flow is, to leading order, shearless and viscosity, negligible. The Froude number is large, so that the radius of the curtain's curvature exceeds its thickness. The Weber number is close to unity, so that the forces of inertia and surface tension are almost perfectly balanced. An asymptotic equation is derived under these assumptions, and its steady solutions are explored. It is shown that, for a given pair of ejection velocity/angle, infinitely many solutions exist, each representing a steady curtain with a stationary capillary wave superposed on it. These solutions describe a rich variety of behaviours: in addition to arching downwards, curtains can zigzag downwards, self-intersect, and even rise until the initial supply of the liquid's kinetic energy is used up. The last type of solutions corresponds to a separatrix between upward- and downward-bending curtains -- in both cases, self-intersecting (such solutions are meaningful only until the first intersection, after which the liquid just splashes down). Finally, suggestions are made as to how the existence of upward-bending curtains can be tested experimentally.
The New Economics of Livestock Production Management
Creators: name: Hubbs, Todd
name: Preckel, Paul V.
name: Schinckel, Allan P.
name: Deen, John
name: Foster, Kenneth A.
name: Curtis, Stanley E.
name: Johnson, E. Wayne
name: Hubbs, Todd
name: Preckel, Paul V.
name: Schinckel, Allan P.
name: Deen, John
name: Foster, Kenneth A.
name: Curtis, Stanley E.
name: Johnson, E. Wayne
Publisher: name: Unknown
Year: 2008
Subjects: subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: livestock economics
subject: herd management
subject: livestock marketing

description: The importance of heterogeneity of animal attributes in livestock production is assessed. Preliminary results indicate that variance and skew measures of attributes may be becoming more important over time.
Re-appearance of the pairing correlations at finite temperature
Creators: name: Sheikh, J. A.
name: Palit, R.
name: Frauendorf, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Rotational and deformation dependence of isovector and isoscalar pairing correlations at finite temperature are studied in an exactly solvable cranked deformed shell model Hamiltonian. It is shown that isovector pairing correlations, as expected, decrease with increasing deformation and the isoscalar pairing correlations remain constant at temperature, T=0. However, it is observed that at finite temperature both isovector and isoscalar pairing correlations are enhanced with increasing deformation, which contradict the mean-field predictions. It is also demonstrated that the pair correlations, which are quenched at T=0 and high rotational frequency re-appear at finite temperature. The changes in the individual multipole pairing fields as a function of rotation and deformation are analyzed in detail.
description: 16 pages 6 figures
What’s the Matter with Sound? - How Primary School Students Perceive the Nature of Sound
Creators: name: Veith, Sonja Isabel
Publisher: name: Dordrecht : Springer Science + Business Media B.V.
Year: 2023
Subjects: subject: Conception
subject: Perception
subject: Phenomenography
subject: Primary school
subject: Sound
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::370 | Erziehung, Schul- und Bildungswesen
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: Sound is a very omnipresent physical phenomenon that plays a crucial role in our daily lives. It is essential for verbal communication and helps us orient ourselves. Children are especially affected by sound and its presence in their daily lives. This circumstance, and the subject-specific interesting facets of the topic of sound, make this particularly interesting for the classroom. In order to provide effective sound education, it’s important to understand how children perceive sound. This research aims to explore the ways in which primary school children experience sound. The inquiry conducted of 24 interviews with primary school children, with a focus on the propagation of sound. Various experiments were integrated into these interviews in order to provide a child-friendly approach to this rather abstract topic. The interviews were analysed phenomenographically. The focus on sound propagation allowed the children to express their understanding of the nature of sound. The various experiments that addressed different levels of awareness (black box, Schlieren setup) were also beneficial in this regard. The results showed that primary school children already have a wide range of ways of experiencing the nature of sound.
Adversarial Attacks On Multi-Agent Communication
Creators: name: Tu, James
name: Wang, Tsunhsuan
name: Wang, Jingkang
name: Manivasagam, Sivabalan
name: Ren, Mengye
name: Urtasun, Raquel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Cryptography and Security (cs.CR)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Growing at a fast pace, modern autonomous systems will soon be deployed at scale, opening up the possibility for cooperative multi-agent systems. Sharing information and distributing workloads allow autonomous agents to better perform tasks and increase computation efficiency. However, shared information can be modified to execute adversarial attacks on deep learning models that are widely employed in modern systems. Thus, we aim to study the robustness of such systems and focus on exploring adversarial attacks in a novel multi-agent setting where communication is done through sharing learned intermediate representations of neural networks. We observe that an indistinguishable adversarial message can severely degrade performance, but becomes weaker as the number of benign agents increases. Furthermore, we show that black-box transfer attacks are more difficult in this setting when compared to directly perturbing the inputs, as it is necessary to align the distribution of learned representations with domain adaptation. Our work studies robustness at the neural network level to contribute an additional layer of fault tolerance to modern security protocols for more secure multi-agent systems.
NICMOS Measurements of the Near Infrared Background
Creators: name: Thompson, Rodger I.
name: Eisenstein, Daniel
name: Fan, Xiaohui
name: Rieke, Marcia
name: Kennicutt, Robert
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper addresses the nature of the near infrared background. We investigate whether there is an excess background at 1.4 microns, what is the source of the near infrared background and whether that background after the subtraction of all known sources contains the signature of high redshift objects (Z > 10). Based on NICMOS observations in the Hubble Ultra Deep Field and the Northern Hubble Deep Field we find that there is no excess in the background at 1.4 microns and that the claimed excess is due to inaccurate models of the zodiacal background. We find that the near infrared background is now spatially resolved and is dominated by galaxies in the redshift range between 0.5 and 1.5. We find no signature than can be attributed to high redshift sources after subtraction of all known sources either in the residual background or in the fluctuations of the residual background. We show that the color of the fluctuations from both NICMOS and Spitzer observations are consistent with low redshift objects and inconsistent with objects at redshifts greater than 10. It is most likely that the residual fluctuation power after source subtraction is due to the outer regions of low redshift galaxies that are below the source detection limit and therefore not removed during the source subtraction.
description: To appear in the proceedings of A Century of Cosmology - Past, present and future, San Servolo, Venice, Italy, 27-31 August 2007
Implications for galaxy property estimation revealed by CO luminosity-FWHM relations in local star-forming galaxies
Creators: name: Wu, Yi-Han
name: Wang, Jun-Feng
name: Li, Xiao-Hu
name: Jiang, Xue-Jian
name: Tsai, Chao-Wei
name: Wu, Jing-Wen
name: Shi, Kun-Peng
name: Zhu, Lin
name: Zhong, Wen-Yu
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: This study explores a relationship between the CO luminosity-full width at half-maximum linewidth linear relation (i.e. the CO LFR) and mean galaxy property of the local star-forming galaxy sample in the xCOLDGASS data base, via a mathematical statement. The whole data base galaxies were separated into two subsamples based on their stellar masses and redshifts, being a help to examine the dependence issue of the CO LFR. Selecting the galaxy data with a stringent requirement was also implemented in order to assure the validly of the CO LFR. An algorithm of the linear regression was conducted with the data of the subsample. An assessment about the linear correlation manifested a valid CO LFR occurs in the selected galaxy of the subsample, and the intercept of the CO LFR may be related with the mean galaxy properties such as the molecular gas fraction and galaxy size. For the finding on the intercept of the CO LFR, we aligned that intercept with those galaxy properties via the involvement of a $ψ$ parameter. On evaluating the $ψ$ value with our local star-forming galaxy sample, we numerically determined a relationship between the statistical result and the galaxy property in a different stellar mass range. It also shows a possible method on estimating galaxy property.
description: 10 pages, 3 tables, 2 figures; we sincerely appreciate the suggestion of the referee and the acceptance of the MNRAS. Y-HW is greatly grateful to all the co-authors for their works on his articles
Characterizing large-scale weak interlayer shear zones using conditional random field theory
Creators: name: Han, Gang
name: Zhang, Chuanqing
name: Singh, Hemant Kumar
name: Liu, Rongfei
name: Chen, Guan
name: Huang, Shuling
name: Zhou, Hui
name: Zhang, Yuting
Publisher: name: Wechselnde Erscheinungsorte : Elsevier
Year: 2023
Subjects: subject: Activation analysis
subject: Baihetan hydropower station
subject: Conditional random field
subject: Interlayer shear weakness zone
subject: Kriging interpolation technique
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften
subject: Dewey Decimal Classification::600 | Technik::690 | Hausbau, Bauhandwerk

description: The shear behavior of large-scale weak intercalation shear zones (WISZs) often governs the stability of foundations, rock slopes, and underground structures. However, due to their wide distribution, undulating morphology, complex fabrics, and varying degrees of contact states, characterizing the shear behavior of natural and complex large-scale WISZs precisely is challenging. This study proposes an analytical method to address this issue, based on geological fieldwork and relevant experimental results. The analytical method utilizes the random field theory and Kriging interpolation technique to simplify the spatial uncertainties of the structural and fabric features for WISZs into the spatial correlation and variability of their mechanical parameters. The Kriging conditional random field of the friction angle of WISZs is embedded in the discrete element software 3DEC, enabling activation analysis of WISZ C2 in the underground caverns of the Baihetan hydropower station. The results indicate that the activation scope of WISZ C2 induced by the excavation of underground caverns is approximately 0.5–1 times the main powerhouse span, showing local activation. Furthermore, the overall safety factor of WISZ C2 follows a normal distribution with an average value of 3.697.
Interactive fiction in cinematic virtual reality: an interactive and immersive narrative (text)
Creators: name: Reyes, Maria Cecilia
Publisher: name: ECHO
Year: 2019
Subjects: Cinematic Virtual Reality; Interactive Digital Narratives; Interactive Fiction; Interactive Narrative Text

description: In its struggle to gain mass adoption, Virtual Reality (VR) industry and independent creators are exploring various types of content that may attract audiences. This paper presents a potential feature content for VR: Interactive Fiction in cinematic Virtual reality (IFcVR), a media and narrative hybrid resulting from the encounter between Interactive Fiction (IF), hypertextual fiction stories or hyperfiction, and cinematic Virtual Reality (cVR), that is the use of 360° videos. This hybridization of art and media creates immersive and interactive fiction films, in which the ‘interactor’ is placed within the scenic space and has the agency to change the course of the story. In the light of a new narrative and media product, the question of whether this can be considered a narrative text or not arises. This paper sheds some light on IFcVR and its narrative features according to Seymour Chatman’s structuralist model of narrative text, as well as its digital and interactive nature according to current research on the field of interactive narratives. The aim is to highlight the potential of IFcVR to become an entertainment content for the VR public.
description: ECHO, N. 1 (2019): Il soggetto, la realtà, la verità nel tempo delle loro determinazioni digitali. Nuovi linguaggi, nuove narrazioni.
Error 404: file not found. Esperienza, memoria e sensibilità riconfigurate da dati e software
Creators: name: Troiano, Roberta
Publisher: name: ECHO
Year: 2019
Subjects: data; memory; database; artificial intelligence; experience; information and communications; technologies

description: In the postmodern era, our life is intimately connected to our digital signs. Modern human beings are disconnected from nature (Caronia 2008) because they are corrupted by technology. As Rodotà states, each of us is a digital person reduced to a bunch of information (Rodotà 2014). We are ‘inforg’ (Floridi 2012), that is informational and interconnected organisms interacting in a scenario which is boosted by the recording of data. Databases do not only record information but also memories, which are shaped by our own psyche, our ability to remember (Ferraris 2009). As a consequence, data create the soul of humankind. Therefore, it is necessary to reflect on the emotional perspective that connects these specular entities, whose physical and cyber dimension are closely related to each other. We store information in our virtual memories (such as platforms, clouds, and other devices) and then we entirely rely on them. However, information may get lost: for example, the ‘Error 404 message’ means that our data are no longer accessible. Moreover, we cannot deny our connection with digital signs. On the contrary, postmodern identities are nourished by the information they generate. The more they assimilate data, the more they embody them. According to Accotto, the cognitive processing is no longer directly related to human senses but to a mechanic process of mediation or, rather, to data and software (Accotto 2017). Thus, any physical experience is now replaced or intensified by intangible experience. Electronic reproducibility, with the merging of organic and non-organic elements (Attimonelli 2018), not ony generates a new relationship between human beings and technology, but it also reconstructs Benjamin’s (1936) concept of ‘hic et nunc’.
description: ECHO, N. 1 (2019): Il soggetto, la realtà, la verità nel tempo delle loro determinazioni digitali. Nuovi linguaggi, nuove narrazioni.
The influence of soil fauna on nitrogen mineralization and decomposition in soil formed under western redcedar, western hemlock, sitka spruce and douglas-fir forests on the west coast of Vancouver Island
Creators: name: Pratt, Jessica
Publisher: name: University of British Columbia
Year: 2009

description: The influence of soil fauna on indices of N mineralization and decomposition in soil developed under four tree species (western redcedar, western hemlock, Sitka spruce and Douglas-fir) from the west coast of Vancouver island, B. C. was evaluated over a 5- month period. The soil was either defaunated, or given an assemblage of mites, collembola, nematodes and enchytraeids extracted from soil collected from the study site, or given the latter plus one millipede (Harpaphe haydeniana haydeniand). The experiment was carried-out in pots (microcosms) in a greenhouse. Water-leached, KC1- extractable and total N concentration (leached N plus KCl-extractable N plus plant N content) increased with increasing faunal community complexity. The effect was more apparent in the presence of the millipede. The millipede enhanced the rate of decomposition to a statistically significant degree. Rates of N mineralization did not differ significantly between combinations of soil fauna and soil type (tree species). Both decomposition and microbial biomass were significantly enhanced in the presence of H. h.haydeniana. (and other fauna) in Sitka-spruce soils. Western redcedar soil mineralized the most N. The use of cabbage plants as indicators of N availability did not prove to be a good choice; plant biomass was extremely variable and not related to other measures of N availability. The abundance of soil fauna was low and this may have reduced the potential for statistically significant differences between fauna treatments.
Ricostituzione epistemico-estetica: l’aesthesis decoloniale un decennio dopo
Creators: name: Mignolo, Walter D.
Publisher: name: ECHO
Year: 2019
Subjects: Decolonial gnoseology; decolonial aesthesis; decolonial healing

description: My main argument combines two decolonial instances. The first one is the decolonial re-orientation introduced by Aníbal Quijano (in 1990) at the very end of the Cold War. In the 80s it was already evident that the objectives of decolonization could not be achieved through the founding of national states. Quijano intuited that the coloniality of power was an invisible and underlying structure of Western civilization, hidden under the pledges made in the name of modernity. For Quijano, the decolonial task was, in the first place, to get rid of the coloniality of power and, secondly, to engage in epistemological reconstitution. The second instance, 20 years later, was the introduction of decolonial reflections within the framework of the coloniality of power of aesthetic restitution. In the process of advancing in the epistemological and aesthetic reconstitution, we rescue the concept of aesthesis from the oblivion to which the hegemony of aesthetics relegated it. Although the word comes from Greece, we appropriate it in the framework of decolonial thinking. In this essay, I reintroduce the concept of gnosis, already incorporated in Local Histories/Global Designs (2000), to re-organize the senses and the politics of epistemic/aesthetic reconstitution (two modern/colonial concepts).
description: ECHO, N. 1 (2019): Il soggetto, la realtà, la verità nel tempo delle loro determinazioni digitali. Nuovi linguaggi, nuove narrazioni.
THE DISTRIBUTION OF CHILD NUTRITIONAL STATUS ACROSS COUNTRIES AND OVER TIME
Creators: name: Bhagowalia, Priya
name: Chen, Susan E.
name: Masters, William A.
name: Bhagowalia, Priya
name: Chen, Susan E.
name: Masters, William A.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: Underweight
subject: Overweight
subject: Malnutrition
subject: Poverty

description: Malnutrition is manifested in various degrees of both underweight and overweight, with large differences and rapid changes in their prevalence and severity. This paper introduces a new approach to characterizing the distribution of a population’s nutritional status, to help analyze changes in that distribution over time and across countries. Our method draws on the poverty literature to construct Foster-Greer-Thorbecke measures for the incidence and severity of under and overweight, based on deviations in either direction from the median of a healthy population. We apply this median-based measure to the nutritional status of over 400,000 preschool children, as measured in 130 DHS surveys covering 53 countries over a period from 1986 to 2006. Unlike conventional threshold-based methods, the new approach counts changes in every child’s bodyweight. We find that this offers a more sensitive measure of differences across countries and changes over time, showing in particular that children’s bodyweights are closely linked to local agricultural output and gender equality as well as real GDP per capita.
Saturating stable matchings
Creators: name: Maaz, Muhammad
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Theoretical Economics (econ.TH)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Economics and business
subject: FOS: Mathematics

description: I relate bipartite graph matchings to stable matchings. I prove a necessary and sufficient condition for the existence of a saturating stable matching, where every agent on one side is matched, for all possible preferences. I extend my analysis to perfect stable matchings, where every agent on both sides is matched.
description: 10 pages, 2 figures. Version 2: removed simulation and discussion, added section 2.1 "equivalent statements", shortened proofs
Vlasov Simulations of Trapping and Inhomogeneity in Raman Scattering
Creators: name: Strozzi, D. J.
name: Shoucri, M. M.
name: Bers, A.
name: Williams, E. A.
name: Langdon, A. B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We study stimulated Raman scattering (SRS) in laser-fusion conditions with the Eulerian Vlasov code ELVIS. Back SRS from homogeneous plasmas occurs in sub-picosecond bursts and far exceeds linear theory. Forward SRS and re-scatter of back SRS are also observed. The plasma wave frequency downshifts from the linear dispersion curve, and the electron distribution shows flattening. This is consistent with trapping and reduces the Landau damping. There is some acoustic ($ω\propto k$) activity and possibly electron acoustic scatter. Kinetic ions do not affect SRS for early times but suppress it later on. SRS from inhomogeneous plasmas exhibits a kinetic enhancement for long density scale lengths. More scattering results when the pump propagates to higher as opposed to lower density.
description: 4 pages, 6 figures. Submitted to "Journal of Plasmas Physics" for the conference proceedings of the 19th International Conference on Numerical Simulation of Plasmas
Introduzione: “Ricostituzione epistemico-estetica: l’aesthesis decoloniale un decennio dopo” di W.D. Mignolo
Creators: name: Cazzato, Luigi Carmine
Publisher: name: ECHO
Year: 2019

description: Walter Mignolo, semiologo e teorico della cultura, è uno dei membri fondatori del “Grupo Modernidad/Colonialidad” che fra America del Sud e del Nord ha dato vita al pensiero decoloniale. Meglio delle mie parole come presentazione possono valere quelle dello stesso Mignolo quando, per rispondere a Ilya Prigogine e al suo orgoglio di essere europeo per le conquiste di democrazia e scienza, dichiara: “As someone who was educated an lived in (Latin) America half of his present life span and relocated in (Anglo) America, after a three-year intermission in France, I am proud… of the Haitian Revolution” (Mignolo 2000, p. 319). Questa, dunque, la posizionalità di Mignolo, il cui cognome tradisce l’origine italiana: un uomo nato e cresciuto nell’America diventata ‘latina’ (del Sud), poi emigrato nell’America diventata ‘anglo’ (del Nord), con un breve intermezzo europeo. È un uomo che abita i confini dell’interiorità dell’occidente, ma che ha l’orgoglio di appartenere a quel luogo epistemico invisibilizzato (come la Haiti dei giacobini neri) e tuttavia esistente, abitato dai subalterni dell’occidente. Poiché, per dirla con una sua nota formula, “we are where we think” (Mignolo 1999). La sua posizionalità scientifica è invece basata sul ripensamento del “sistema-mondo” del sociologo anglo-americano Immanuel Wallerstein (1974). Questo ripensamento è attuato attraverso il sociologo peruviano della teoria della dipendenza Aníbal Quijano e il filosofo argentino (naturalizzato messicano) della teoria della liberazione Enrique Dussel. I due intellettuali erano entrambi attivi negli anni Sessanta e Settanta, quando gli ispiratori (Foucault, Derrida e Lacan) di coloro che saranno i principali teorici del pensiero postcoloniale (Said, Spivak, Bhabha) erano attivi in Europa, dando il là al poststrutturalismo e al postmodernismo.
description: ECHO, N. 1 (2019): Il soggetto, la realtà, la verità nel tempo delle loro determinazioni digitali. Nuovi linguaggi, nuove narrazioni.
THE ECONOMICS OF BIOMASS COLLECTION, TRANSPORTATION, AND SUPPLY TO INDIANA CELLULOSIC AND ELECTRIC UTILITY FACILITIES
Creators: name: Brechbill, Sarah C.
name: Tyner, Wallace E.
name: Brechbill, Sarah C.
name: Tyner, Wallace E.
Publisher: name: Unknown
Year: 2008
Subjects: Crop Production/Industries
Production Economics
Resource /Energy Economics and Policy

description: With cellulosic energy production from various forms of biomass becoming popular in renewable energy research, agricultural producers may be called upon to plant and harvest switchgrass or collect corn stover to supply such energy production to nearby facilities. Determining the entire production and transportation cost to the producer of switchgrass or corn stover and the amount available within a given distance of the plant will result in a per ton cost the plant will need to pay producers in order to be supplied with sufficient quantities of biomass.
El espectáculo de la otredad: la representación racial y de género en Roman Scandals
Creators: name: Aparisi Galán, María
Publisher: name: ECHO
Year: 2020
Subjects: otherness; blackface; musical; fetish; look; otredad; blackface; cine musical; fetiche; mirada

description: The present paper analyses the strategies of racialization and genderization developed in the musical film Roman Scandals (Frank Tuttle 1933) and especially those used in the musical number “Keep Young and Beautiful”, in which Eddie (Eddie Cantor) uses blackface to hide in the bathrooms of ancient Rome in the company of half-naked white women and their black maids. Through a theoretical framework that draws on the contributions of Decolonial Studies, Postcolonialism Studies and Whiteness Studies, together with the methodological tools of Feminist Film Theory, we aim to reveal the phenomena of coloniality of power and gender that returns the white man’s position of power that he had lost as a result of the Great Depression. En el siguiente artículo se analizan las estrategias de racialización y engenerización desarrolladas en la película musical Roman Scandals (Frank Tuttle, 1933) y especialmente las utilizadas en el número musical "Keep Young and Beautiful", en el que Eddie (Eddie Cantor) utiliza la cara negra para esconderse en los baños de la antigua Roma en compañía de mujeres blancas semidesnudas y sus criadas negras. A través de un marco teórico que se nutre de los aportes de los Estudios Descoloniales, el Postcolonialismo y los estudios de la blanquitud, junto con las herramientas metodológicas de la Teoría Fílmica Feminista, pretendemos revelar los fenómenos de colonialidad del poder y del género que devuelven al hombre blanco la posición de poder que había perdido como consecuencia de la Gran Depresión.
description: ECHO, N. 2 (2020): Semiosi della colonialità e dinamiche culturali al tempo della mobilità globale
Integrability and the Kerr-(A)dS black hole in five dimensions
Creators: name: Kunduri, Hari K.
name: Lucietti, James
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this note we prove that the Hamilton-Jacobi equation for a particle in the five dimensional Kerr-(A)dS black hole is separable, for arbitrary rotation parameters. As a result we find an irreducible Killing tensor. We also consider the Klein-Gordon equation in this background and show that this is also separable. Finally we comment on extensions and implications of these results.
description: 4 pages, RevTeX. v2: minus sign typos in eq. (17) and (18) of published version corrected
Risk Perception and Altruistic Averting Behavior: Removing Arsenic in Drinking Water
Creators: name: Cai, Yongxia
name: Shaw, W. Douglass
name: Wu, Ximing
name: Cai, Yongxia
name: Shaw, W. Douglass
name: Wu, Ximing
Publisher: name: Unknown
Year: 2008
Subjects: Resource /Energy Economics and Policy
Risk and Uncertainty

description: Self protection and altruism are crucial behavioral factors in determining the effectiveness of public policies aimed to improve human health from environmental hazards. This paper examined people’s arsenic mortality risk perception in the drinking water for themselves and their children using the Bayesian learning framework. A two-stage structural model within the random utility framework was developed to model the household’s risk averting behavior with respect to arsenic-related mortality risk. The empirical results indicate that parents engage in a form of mixed altruism. Parents are willing to spend more to make a trade-off between their risk and their children’s risk.
Federated Learning over Wireless Device-to-Device Networks: Algorithms and Convergence Analysis
Creators: name: Xing, Hong
name: Simeone, Osvaldo
name: Bi, Suzhi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: Machine Learning (cs.LG)
subject: Networking and Internet Architecture (cs.NI)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The proliferation of Internet-of-Things (IoT) devices and cloud-computing applications over siloed data centers is motivating renewed interest in the collaborative training of a shared model by multiple individual clients via federated learning (FL). To improve the communication efficiency of FL implementations in wireless systems, recent works have proposed compression and dimension reduction mechanisms, along with digital and analog transmission schemes that account for channel noise, fading, and interference. The prior art has mainly focused on star topologies consisting of distributed clients and a central server. In contrast, this paper studies FL over wireless device-to-device (D2D) networks by providing theoretical insights into the performance of digital and analog implementations of decentralized stochastic gradient descent (DSGD). First, we introduce generic digital and analog wireless implementations of communication-efficient DSGD algorithms, leveraging random linear coding (RLC) for compression and over-the-air computation (AirComp) for simultaneous analog transmissions. Next, under the assumptions of convexity and connectivity, we provide convergence bounds for both implementations. The results demonstrate the dependence of the optimality gap on the connectivity and on the signal-to-noise ratio (SNR) levels in the network. The analysis is corroborated by experiments on an image-classification task.
description: 46 pages, 9 figures, to appear in IEEE J. Sel. Areas Commun
Of birds and trees: Rethinking decoloniality through unsettlement as a pluriversal human condition
Creators: name: Tlostanova, Madina
Publisher: name: ECHO
Year: 2020
Subjects: unsettlement; pluriversality; defuturing; decoloniality; coalitions; disinsediamento; pluriversalità; defuturizzazione; decolonializzazione; coalizioni

description: Unsettlement is our current shared pluriversal human condition which is experienced differently depending on our trajectories, privileges and disadvantages. The negative phase of globalization epitmoized in the Covid-19 crisis, threatens to fold the world into a digital slavery where coloniality would finally stop to be seen as a ‘problem’ of refugees, migrants and indigenous people or a fashionable term of the academic elite, to be faced directly by each and every. Previously decoloniality has focused mainly on the critique of the intersections of race and capitalism in the production of knowledge and subjectivities. It has seldom addressed the future or ventured outside the position of the colonial difference (exteriority). In the face of the global challenges including the defunct politics and the ultra-right populist turn, as well as the Anthropocene and technological colonization, fragmenting the human species, coloniality needs to be complemented with additional dimensions that would allow overcoming its stand-pointism and refusal to dialogue across the imperial difference with other critical positions. One of such dimensions is unsettlement which is discussed in the article as a promising concept in the agenda for refuturing. Can unsettlement generate new transversal relational solidarity beyond the bankrupt institutions and power structures? Can it launch new communities of change which would inevitably also change ourselves as humans? How would art and fiction react to these tectonic shifts and advance the shaping of the agendas of these communities of change? The article briefly addresses two possible paths for artistic representations of the unsettlement - the introspective one struggling with multiple identifications and re-weaving oneself and one’s world anew and a less realized promising way of the positive ontological design fictions and utopias/dystopias transcending modernity/coloniality to imagine an alternative other world. The unsettled ‘birds’ rather than rooted ‘trees’ are likely to be the main protagonists of these fictions helping us to learn that unsettlement can eventually bring a positive sense of the self and/in the world and a new political imagination to refuturing.
description: ECHO, N. 2 (2020): Semiosi della colonialità e dinamiche culturali al tempo della mobilità globale
Evidence for Higgs boson decay to a pair of muons
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Evidence for Higgs boson decay to a pair of muons is presented. This result combines searches in four exclusive categories targeting the production of the Higgs boson via gluon fusion, via vector boson fusion, in association with a vector boson, and in association with a top quark-antiquark pair. The analysis is performed using proton-proton collision data at $\sqrt{s} =$ 13 TeV, corresponding to an integrated luminosity of 137 fb$^{-1}$, recorded by the CMS experiment at the CERN LHC. An excess of events over the background expectation is observed in data with a significance of 3.0 standard deviations, where the expectation for the standard model (SM) Higgs boson with mass of 125.38 GeV is 2.5. The combination of this result with that from data recorded at $\sqrt{s} =$ 7 and 8 TeV, corresponding to integrated luminosities of 5.1 and 19.7 fb$^{-1}$, respectively, increases both the expected and observed significances by 1%. The measured signal strength, relative to the SM prediction, is 1.19 $^{+0.40}_{-0.39}$ (stat) $^{+0.15}_{-0.14}$ (syst). This result constitutes the first evidence for the decay of the Higgs boson to second generation fermions and is the most precise measurement of the Higgs boson coupling to muons reported to date.
description: Replaced with the published version. Added the journal reference and the DOI. All the figures and tables, including additional supplementary figures and tables, can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIG-19-006 (CMS Public Pages)
Factors Affecting Maize Producers Adoption of Forward Pricing in Price Risk Management: The Case of Vaalharts
Creators: name: Jordaan, Henry
name: Grove, Bennie
name: Jordaan, Henry
name: Grove, Bennie
Publisher: name: Unknown
Year: 2007
Subjects: subject: Agricultural Finance
subject: Risk and Uncertainty
subject: Forward pricing
subject: Logit
subject: Factor analysis

description: Logistic regression is employed to analyse the factors which influence the decision of whether or not the respondent used forward pricing methods during the 2004/05 maize production season. Forward pricing methods include cash forward contracting and hedging with futures contracts and/or options, through the South African Futures Exchange (SAFEX). Based on the results, the use of forward pricing is associated with lower levels of risk aversion and higher levels of human capital. Factor analysis is employed to reduce the dimensionality of the personal reasons which help to interpret the underlying, common factor of the personal reasons why farmers are reluctant to use forward pricing methods. Three factors were extracted and were labelled “Lack of capacity”, “Distrust of the market”, and “Bad experiences”. The results from the factor analysis confirm the finding that farmers need higher levels of human capital to use forward pricing methods and that farmers do not believe that the forward pricing market is effective. Education should furthermore, focus more on the practical application of alternative forward pricing methods and not purely on the benefits of the use of forward pricing methods.