cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Trait evolution and Phylogenetic data matrix;Data for trait evolution (hyoid and internal choana) from A new goniopholidid from the Upper Jurassic Morrison Formation, USA: novel insight into aquatic adaptation toward modern crocodylians
Creators: name: Yoshida, Junki
name: Hori, Atsushi
name: Kobayashi, Yoshitsugu
name: Ryan, Michael J.
name: Takakuwa, Yuji
name: Hasegawa, Yoshikazu
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 40308 Palaeontology (incl. Palynology)
subject: FOS: Earth and related environmental sciences
subject: 60301 Animal Systematics and Taxonomy
subject: 60310 Plant Systematics and Taxonomy

description: Goniopholididae is a group of basal neosuchian crocodyliforms closely related to Paralligatoridae and Eusuchia that lived during the Jurassic and Early Cretaceous. Goniopholidids have the long, flat snout and secondary palate of modern crocodylians, of which the acquisition is regarded as a key feature in the early evolution of crocodylian body plan and their aquatic adaptation. Here, we report a new species, Amphicotylus milesi, with the description from the best-preserved specimen to date of Goniopholididae from Wyoming, USA. Its posterior extension of the nasopharyngeal passage (pterygoid secondary palate) and the shortening and dorsal deflection of the ceratobranchial suggest that basal neosuchians could raise their gular valve to separate oral and pharyngeal cavities as in modern crocodylians. The anatomy of Amphicotylus milesi sheds light on the acquisition of this new respiratory system in the crocodyliform evolution and their early aquatic adaptation, leading to modern crocodylians.
Sous-groupes algébriques du groupe de Cremona
Creators: name: Blanc, Jérémy
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14L10, 14L30, 14E07, 14E30

description: We give a complete classification of maximal algebraic subgroups of the Cremona group of the plane and provide algebraic varieties that parametrize the conjugacy classes. ----- Nous donnons une classification complète des sous-groupes algébriques maximaux du groupe de Cremona du plan et explicitons les variétés qui paramètrent les classes de conjugaison.
description: Text in French, Translated introduction, 35 pages, 1 figure, to appear in Transform. Groups
Supplementary document for Sodium based plasmonic waveguides with high confinement factors and ultra-low gain thresholds - 7174630.pdf
Creators: name: Teng, Da
name: liu, Huijuan
name: Liu, Yuying
Publisher: name: Optica Publishing Group
Year: 2024
Subjects: Uncategorized

description: working principle, fabrication, and definitions of performance indicators
The COMPLETE Survey of Star-Forming Regions: Phase I Data
Creators: name: Ridge, Naomi A.
name: Di Francesco, James
name: Kirk, Helen
name: Li, Di
name: Goodman, Alyssa A.
name: Alves, João F.
name: Arce, Héctor G.
name: Borkin, Michelle A.
name: Caselli, Paola
name: Foster, Jonathan B.
name: Heyer, Mark H.
name: Johnstone, Doug
name: Kosslyn, David A.
name: Lombardi, Marco
name: Pineda, Jaime E.
name: Schnee, Scott L.
name: Tafalla, Mario
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an overview of data available for the Ophiuchus and Perseus molecular clouds from ``Phase I'' of the COMPLETE Survey of Star-Forming Regions. This survey provides a range of data complementary to the Spitzer Legacy Program ``From Molecular Cores to Planet Forming Disks.'' Phase I includes: Extinction maps derived from 2MASS near-infrared data using the NICER algorithm; extinction and temperature maps derived from IRAS 60 and 100um emission; HI maps of atomic gas; 12CO and 13CO maps of molecular gas; and submillimetre continuum images of emission from dust in dense cores. Not unexpectedly, the morphology of the regions appears quite different depending on the column-density tracer which is used, with IRAS tracing mainly warmer dust and CO being biased by chemical, excitation and optical depth effects. Histograms of column-density distribution are presented, showing that extinction as derived from 2MASS/NICER gives the closest match to a log-normal distribution as is predicted by numerical simulations. All the data presented in this paper, and links to more detailed publications on their implications are publically available at the COMPLETE website.
description: Accepted by AJ. Full resolution version available from: http://www.cfa.harvard.edu/COMPLETE/papers/complete_phase1.pdf
A new selection principle
Creators: name: Tsaban, Boaz
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Topology (math.GN)
subject: Combinatorics (math.CO)
subject: Logic (math.LO)
subject: FOS: Mathematics

description: Motivated by a recent result of Sakai, we define a new selection operator for covers of topological spaces, inducing new selection hypotheses. We initiate a systematic study of the new hypotheses. Some intriguing problems remain open.
description: Final version
Design of the Life Signature Detection Polarimeter LSDpol
Creators: name: Keller, Christoph U.
name: Snik, Frans
name: Patty, C. H. Lucas
name: Klindžić, Dora
name: Krasteva, Mariya
name: Doelman, David S.
name: Wijnen, Thomas
name: Pallichadath, Vidhya
name: Stam, Daphne M.
name: Demory, Brice-Olivier
name: Kühn, Jonas G.
name: Hoeijmakers, H. Jens
name: Pommerol, Antoine
name: Poch, Olivier
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Many biologically produced chiral molecules such as amino acids and sugars show a preference for left or right handedness (homochirality). Light reflected by biological materials such as algae and leaves therefore exhibits a small amount of circular polarization that strongly depends on wavelength. Our Life Signature Detection polarimeter (LSDpol) is optimized to measure these signatures of life. LSDpol is a compact spectropolarimeter concept with no moving parts that instantaneously measures linear and circular polarization averaged over the field of view with a sensitivity of better than 1e-4. We expect to launch the instrument into orbit after validating its performance on the ground and from aircraft. LSDpol is based on a spatially varying quarter-wave retarder that is implemented with a patterned liquid-crystal. It is the first optical element to maximize the polarimetric sensitivity. Since this pattern as well as the entrance slit of the spectrograph have to be imaged onto the detector, the slit serves as the aperture, and an internal field stop limits the field of view. The retarder's fast axis angle varies linearly along one spatial dimension. A fixed quarter-wave retarder combined with a polarization grating act as the disperser and the polarizing beam-splitter. Circular and linear polarization are thereby encoded at incompatible modulation frequencies across the spectrum, which minimizes the potential cross-talk from linear into circular polarization.
description: 10 pages, 10 figures, SPIE Proceedings 11443-167
Re-evaluation of Spin-Orbit Dynamics of Polarized e+ e- Beams in High Energy Circular Accelerators and Storage Rings: an approach based on a Bloch equation
Creators: name: Heinemann, Klaus
name: Appelö, Daniel
name: Barber, Desmond P.
name: Beznosov, Oleksii
name: Ellison, James A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: We give an overview of our current/future analytical and numerical work on the spin polarization in high-energy electron storage rings. Our goal is to study the possibility of polarization for the CEPC and FCC-ee. Our work is based on the so-called Bloch equation for the polarization density introduced by Derbenev and Kondratenko in 1975. We also give an outline of the standard approach, the latter being based on the Derbenev-Kondratenko formulas.
description: arXiv admin note: text overlap with arXiv:2007.14613
Relations for Four Nucleons in a Single j Shell-using 9j Symbols to get rid of 9j Symbols
Creators: name: Zamick, L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In a previous work we considered the number of pairs of particles with angular momentum J12 for systems with angular momentum zero.Here we extend the work to states of any total angular momentum.We find simplified relations satisfied for a system of four nucleoons with isospin zero and two.
description: 7 pages,nofigures
(Re-)Negotiating Ambiguity’s (Added) Value(lessness)
Creators: name: Klaassen, Oliver
name: Aranke, Sampada
name: Beckmann, Marie Sophie
name: Cooper, Ashton
name: Claus, Jakob
name: Getsy, David J.
name: Kargin, Fatma
name: Rand, Erica
name: Schorstein, Tillmann
name: Sexon, Sophie
name: Simmons, William J.
name: Sorokin, Siim
name: Töpfer, Lukas Mathis
Publisher: name: On_Culture
Year: 2021

description: What would an issue on ambiguity be without countering the affirmative calls for a concept that established itself as an aesthetic paradigm and thus as a norm in art discourse as early as around 1800? To answer this, this multi-voiced _Perspective is dedicated not only to the potentials (added value) but also to the limits (valuelessness) of ambiguity as an analytical tool. David J. Getsy, who works at the intersection of art history, queer studies, and transgender studies, initially delivered his* reservations about ambiguity at the Symposium Ambiguity Forum, held at the Renaissance Society, University of Chicago, on 14 January 2017. In the sense of a deconstructive (re-)reading practice, 12 contributors from various disciplinary backgrounds accepted the invitation to respond to Getsy’s critique of the concept of ambiguity with a short comment. In the current _Perspective, Getsy has the last word by responding to the forum with a closing comment at the end. What emerges through this experimental-discursive format is, on the one hand, a structurally ambiguous discussion room in which the reader is invited to search for possible contradictions and ambiguous relations of tension between the individual comments and to evaluate them as a contribution to the issues topic. On the other hand, this contribution is above all an invitation to add more views to this open discussion, for example by writing a _Perspective in reaction to one of the comments.
description: On_Culture, No 12 (2021): Ambiguity
Elicitation on quantifier float, cataphora, weak crossover, and raising
Creators: name: Rudolph, Johnny (Soni)
name: Drummond, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: nkr

description: Elicitation on quantifier float in middle constructions, quick checks for cataphora and weak crossover in matrix clauses, and raising.
Leptoquark manoeuvres in the dark: a simultaneous solution of the dark matter problem and the $R_{D^{(*)}}$ anomalies
Creators: name: Belanger, Geneviève
name: Bharucha, Aoife
name: Fuks, Benjamin
name: Goudelis, Andreas
name: Heisig, Jan
name: Jueid, Adil
name: Lessa, Andre
name: Mohan, Kirtimaan A.
name: Polesello, Giacomo
name: Pani, Priscilla
name: Pukhov, Alexander
name: Sengupta, Dipan
name: Zurita, José
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The measured branching fractions of $B$-mesons into leptonic final states derived by the LHCb collaboration hint towards the breakdown of lepton flavour universality. In this work we take at face value the so-called $R_{D^{(*)}}$ observables that are defined as the ratios of neutral $B$-meson charged-current decays into a charged $D$-meson, a charged lepton and a neutrino final state in the tau and muon channels. A well-studied and simple solution to this charged current anomaly is to introduce a scalar leptoquark $S_1$ that couples to the second and third generation of fermions. We investigate how $S_1$ can also serve as a mediator between the Standard Model and a dark sector. We study this scenario in detail and estimate the constraints arising from collider searches for leptoquarks, collider searches for missing energy signals, direct detection experiments and the dark matter relic abundance. We stress that the production of a pair of leptoquarks that decays into different final states (i.e. the commonly called "mixed" channels) provides critical information for identifying the underlying dynamics, and we exemplify this by studying the $t τb ν$ and the resonant $S_1$ plus missing energy channels. We find that direct detection data provides non-negligible constraints on the leptoquark coupling to the dark sector, which in turn affects the relic abundance. We also show that the correct relic abundance can not only arise via standard freeze-out, but also through conversion-driven freeze-out. We illustrate the rich phenomenology of the model with a few selected benchmark points, providing a broad stroke of the interesting connection between lepton flavour violation and dark matter.
description: v2: 60 pages, minor changes, added references. Matches the published version
(Repatriat)Able Bones
Creators: name: Spyropoulou, Despoina
Publisher: name: On_Culture
Year: 2021

description: European museums (of ethnography) and the material culture under their custody — a large portion of which was collected by the soldiers, explorers, and professional looters of the colonial era — are increasingly confronted by formerly colonized countries and Indigenous communities demanding the repatriation of their cultural patrimony. In this context, more and more ancestral human remains become the protagonists of their descendants’ concerted efforts to bring them back home and offer them a reburial. Recognized as having been brought to Europe and its museums primarily as specimens for the racial theories that scientifically abetted the colonial agendas of power and control, these bones now find themselves at the center of the contemporary scenario of Europe’s — delayed — reckoning with its colonial past. From an anthropological point of view, the current potential for repatriation to their native lands (and their capacity to acquire a ‘repatriatable’ status) should not be pinned down to singular meanings. Indeed, from their long museum sojourns and their unfolding repatriation adventures to their troubling stories of colonial acquisition, the reclaimed remains seem to condense diverse temporalities. Analytically speaking, this paper suggests that the bones’ ‘repatriatable status’ does not entail their entrapment within a discursive system of binary oppositions, but their emergence as social persons that could be paralleled to other classical person-like ‘things’ in anthropology: the art objects of Alfred Gell, or the Maussian gift. Through such a theorization, the repatriatable remains are empowered to teach us that the social dramas around their potential return are not necessarily about the infliction of closure, but the activation of incessant cycles of reciprocity. Repatriation then, can be narrated otherwise: not as a story of resolution, but as one of irreducible ambiguity.
description: On_Culture, No 12 (2021): Ambiguity
How to Get Over “Ambiguity Intolerant” Approaches to Social Theory?
Creators: name: Gekle, Lea
Publisher: name: On_Culture
Year: 2021

description: This article analyzes Theodor Adorno’s empirical research on the authoritarian personality and its underlying theory of reification, in order to interrogate how Adorno produces a theory of society which can overcome “ambiguity-intolerant” approaches to social theory. It is based on three hypotheses. The first concerns the relationship between method and social diagnosis elaborated in The Authoritarian Personality; here, I focus on Adorno’s search for a method to examine the reification of the individual in late capitalist society without externalizing this reification. Adorno’s specific way of overcoming a positivistic approach towards society brings me to my second hypothesis, wherein I try to understand positivistic approaches to society as “ambiguity-intolerant” ways to understand society. I consider these “ambiguity intolerant” because their two main criteria, namely “axiological neutrality” and “objectivity” do not allow a dialectical and therefore ambiguity-tolerant understanding of society. My third hypothesis is based on the idea that Adorno is not alone in his project of a critique of positivistic approaches: since the 1970s, at least, feminist epistemologies have also sought to critique the positivistic idea of an axiological neutral and objective knowledge of society. I then show how a feminist critique of Adorno can criticize his theory of the knowing subject as not sufficiently precise. Using Sandra Harding’s idea of “new subjects of knowledge,” I demonstrate that a feminist critique of the knowing subject can produce an empirically more vivid knowledge about the reification and corporality of the knowing subject in late capitalism.
description: On_Culture, No 12 (2021): Ambiguity
ZAMONAVIY DOLZARB FIQHIY MASALALARINING SA'DUDDIN TAFATAZONIYNING "SHARH FIQH AL-KAYDONIY" ASARIDAGI TALQINI
Creators: name: Anarbayeva, Jamila
Publisher: name: Zenodo
Year: 2024

description: Mazkur tezisda Lutfulloh Nasafiyning “Fiqhi Kaydoniy” asarining yozilish tarixi, unda shar’iy ilmlar, zamonaviy fiqhiy masalalarga oid tamoyillar bilan bir qatorda asarning batafsil tavsifi hamda uning tarkibiy qismi yoritilgandir. Islom huquqi sohasida yozilgan jamlovchi asar hisoblangan ushbu kitob hozirga qadar oʻz ahamiyatini yoʻqotmagani bilan ajralib turadi. Asarda nafaqat fiqhga doir sohalar, ibodat hamda muomalat masalalari batafsil yoritib berilgan.
The Divine as Non-Binary
Creators: name: Biswas, Pooja Mittal
Publisher: name: On_Culture
Year: 2021

description: This trilogy of poems presents a trans-positive perspective on the characters of Shiva, Vishnu and Shikhandi, all figures of import in Hinduism. The first poem focuses on the half-male, half-female form of Shiva, Ardhanarishwara; the second focuses on Vishnu’s female incarnation, Mohini; and the third focuses on Shikhandi, the warrior princess-turned-prince who was a key figure in the defeat of the Kauravas in the Mahabharata. Accompanying these poems is an exegetical essay offering an analysis of the divine as non-binary in Hinduism in general, as well as providing a critical framework for the poems themselves. In summation, this _Perspective combines queer theory with applied transpoetics and Hindu mythology to offer a unique glimpse into gender alterity in Hinduism through a combination of critical and creative practice.
description: On_Culture, No 12 (2021): Ambiguity
Designer Patterns: Flexible Control of Precipitation through Electric Currents
Creators: name: Bena, Ioana
name: Droz, Michel
name: Lagzi, Istvan
name: Martens, Kirsten
name: Racz, Zoltan
name: Volford, Andras
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Precipitation patterns generated by A^{+}+B^{-} --> C type reaction-diffusion processes are studied. It is shown both theoretically and experimentally that the patterns can be controlled by an appropriately designed, time-dependent electric current in the system. We describe examples of current dynamics yielding periodic bands of prescribed wavelength, as well as more complicated structures. The pattern control is demonstrated experimentally on the reaction-diffusion-precipitation process 2AgNO_3+K_2Cr_2O_7 --> Ag_2Cr_2O_7+2KNO_3 taking place in a gel.
description: 4 pages, 6 figures
Equation-of-motion cavity quantum electrodynamics coupled-cluster theory for electron attachment
Creators: name: Liebenthal, Marcus D.
name: Vu, Nam
name: DePrince, A. Eugene
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The electron attachment variant of equation-of-motion coupled-cluster theory (EOM-EA-CC) is generalized to the case of strong light-matter coupling within the framework of cavity quantum electrodynamics (QED). The resulting EOM-EA-QED-CC formalism provides an ab initio, correlated, and non-perturbative description of cavity-induced effects in many-electron systems that complements other recently proposed cavity-QED-based extensions of coupled-cluster theory. Importantly, this work demonstrates that QED generalizations of EOM-CC theory are useful frameworks for exploring particle non-conserving sectors of Fock space, thereby establishing a path forward for the simultaneous description of both strong electron-electron and electron-photon correlation effects.
A_Sociality as a Model Figure of Ambiguity
Creators: name: Engel, Antke A.
Publisher: name: On_Culture
Year: 2021

description: Ambiguity has been the guiding motive of my queer theoretical considerations from the very beginning. Early on I propose to characterize queer politics through strategies of undisambiguation or equivocation (VerUneindeutigung) rather than diversification or abolishment of heteronormative sexual difference (Engel 2002). In the essay I will reconstruct the different epistemological steps from undisambiguation through queer politics of paradox to what I call today ‘queerness as lived ambiguity’. I will explicate how the notion of ambiguity fulfills a double function in queer theory, namely underlining ambiguity’s livability (multidimensional identities are neither stable nor coherent) and explaining its political potential (overcoming clear-cut borders and simplified antagonisms). In the main part of the essay I will focus on a_sociality as figure of ambiguity, arguing that queerness as lived ambiguity goes along with an understanding of relationality and kinship defined by a continuum or simultaneity of sociality, anti-sociality, and asociality, named a_sociality. My thesis is that in avowing the ambiguity of a_sociality it becomes possible to move towards forms of cohabitation under conditions of social and global heterogeneity. However, a_sociality is defined not only by ambiguity but also by ambivalence. It is from this proximate though distinct relation that politics evolve. What Judith Butler (2020) discusses as an ethical attitude of ‘aggressive nonviolence’ turns out to be an ambiguous term that fosters decisions that simultaneously acknowledge and overcome ambivalence.
description: On_Culture, No 12 (2021): Ambiguity
"Polimorfi e poligami e un po’ anche polipi."
Creators: name: Schöfberger, Riccardo
Publisher: name: On_Culture
Year: 2021

description: Cultural studies are underlining ambiguity and fluidity concepts to grasp how gender narratives have been changing since the upheaval of 1968. Scholars have acknowledged that traditional masculinity has been challenged and remolded as a result of second-wave feminism. However, representations of masculinity have yet to be examined in one of the key moments of postwar Italian culture: the sociopolitical turmoil of the late 1970s. Bologna was the center of the Italian Movement of 1977. Its subcultural scene flourished thanks to the confluence of young creatives at the DAMS University of Bologna, where Umberto Eco taught. The symbolic productions of this scene provide brilliant portrayals of the reshaping of gender becoming ambiguous and fluid. This article examines the literary representations of masculinity in exemplary works by the three most notable authors tied to subcultural Bologna: Andrea Pazienza, Enrico Palandri, and Pier Vittorio Tondelli. My argument is that their narrative constructions of masculinity reveal three remarkably different reactions to second-wave feminism and to the challenging and remolding of gender in the late 1970s. These reactions are a tendency towards resentful and sarcastic rejection of pro-feminist discomfort, an aestheticizing acceptance of melancholic and ambiguous masculinities, and a postmodern turn towards the conception of gender fluidity. Furthermore, displacement, ambiguity and fluidity can be observed in the mixed language and experimental syntax. In doing so, this paper sheds new light on the transition toward postmodern and backlash gender narratives in the subsequent decade.
description: On_Culture, No 12 (2021): Ambiguity
Transparency in Decision Making Process: Improving Coverage Area of Drinking Water Provision Using Build Operate and Transfer Investment in Indonesia
Creators: name: Plamonia, Nicco
Publisher: name: figshare
Year: 2022
Subjects: subject: 120201 Building Construction Management and Project Planning
subject: FOS: Civil engineering

description: The Indonesian National Long Term Development Plan by RPJP (2005-2025) specifies that in 2019, 100 per cent of Indonesian citizens should have universal access to safe drinking water. The target requires around USD 27 billion to develop drinking water supply infrastructure in which 10 percent of the funding alternatives is Public Private Partnership. Complexity, corruption, uncertainty in water management are some of the challenge confronting effective coverage delivery, as well as the number of people who withdraw resource units can increase these problems. Thus, collective actions are needed to establish and enforce rules that; ensure sustainable usage of resources and products; secure access to safe drinking water supply as a basic need at acceptable price to citizens. The aim of this papers is to study the relationship between the level of transparency in the PPP/BOT arrangement and the process outcomes, with a focus on maximizing the coverage area. Using comparative case studies from three municipalities in Indonesia, The research framework will be based on the Institutional Analysis and Development (IAD) framework and Contextual Interaction Theory (CIT). The findings of this paper contribute to the sustainable development agenda by providing developing decision support guidelines that can help government policy makers, businesses, and NGOs in formulating and incorporating sustainability principles in PPP infrastructure projects in developing economies, especially in Indonesia.
Victim or Perpetrator?
Creators: name: Barlow, Amy
Publisher: name: On_Culture
Year: 2021

description: Graphic narratives about genocide allow for different and unique ways of visualizing and imagining trauma and trauma-induced subjective experiences. In their attempt to initiate active reader participation in filling in the gutters with reader-induced closure, graphic narratives are unique as they work with emotion to mobilize their readers to act. This form of narrative also allows creators to expose the liminality of subject positions more easily. Through an analysis of Deogratias: A Tale of Rwanda and Waltz with Bashir: A Lebanon War Story, this paper demonstrates that the dimensions of perpetratorhood are far from well-defined and that the perpetrator often resides in the ambiguity of what Primo Levi calls the ‘gray zone.’ This zone describes a middle ground between good and evil which draws attention to complications in how perpetrators are judged as well as how victims are represented. Comics scholar Hillary Chute explains that the power of graphic narratives comes from their ability to “intervene against a culture of invisibility” through the ethical portrayal of trauma. This risk is displayed in the graphic novels Deogratias and Waltz with Bashir as they both centralize characters that expose the hidden nuances of perpetratorhood.
description: On_Culture, No 12 (2021): Ambiguity
Real-time Quadrotor Navigation Through Planning in Depth Space in Unstructured Environments
Creators: name: Ahmad, Shakeeb
name: Fierro, Rafael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper addresses the problem of real-time vision-based autonomous obstacle avoidance in unstructured environments for quadrotor UAVs. We assume that our UAV is equipped with a forward facing stereo camera as the only sensor to perceive the world around it. Moreover, all the computations are performed onboard. Feasible trajectory generation in this kind of problems requires rapid collision checks along with efficient planning algorithms. We propose a trajectory generation approach in the depth image space, which refers to the environment information as depicted by the depth images. In order to predict the collision in a look ahead robot trajectory, we create depth images from the sequence of robot poses along the path. We compare these images with the depth images of the actual world sensed through the forward facing stereo camera. We aim at generating fuel optimal trajectories inside the depth image space. In case of a predicted collision, a switching strategy is used to aggressively deviate the quadrotor away from the obstacle. For this purpose we use two closed loop motion primitives based on Linear Quadratic Regulator (LQR) objective functions. The proposed approach is validated through simulation and hardware experiments.
Supplementary Information Text from A Carboniferous synapsid with caniniform teeth and a reappraisal of mandibular size-shape heterodonty in the origin of mammals
Creators: name: Huttenlocker, Adam K.
name: Singh, Suresh A.
name: Henrici, Amy C.
name: Sumida, Stuart S.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: 40308 Palaeontology (incl. Palynology)
subject: FOS: Earth and related environmental sciences

description: Heterodonty is a hallmark of early mammal evolution that originated among the non-mammalian therapsids by the Middle Permian. Nonetheless, the early evolution of heterodonty in basal synapsids is poorly understood, especially in the mandibular dentition. Here, we describe a new synapsid, Shashajaia bermani gen. et sp. nov., based on a well-preserved dentary and jaw fragments from the Carboniferous–Permian Halgaito Formation of southern Utah. Shashajaia shares with some sphenacodontids enlarged (canine-like) anterior dentary teeth, a dorsoventrally deep symphysis and low-crowned, subthecodont postcanines having festooned plicidentine. A phylogenetic analysis of 20 taxa and 154 characters places Shashajaia near the evolutionary divergence of Sphenacodontidae and Therapsida (Sphenacodontoidea). To investigate the ecomorphological context of Palaeozoic sphenacodontoid dentitions, we performed a principal component analysis based on two-dimensional geometric morphometrics of the mandibular dentition in 65 synapsids. Results emphasize the increasing terrestrialization of predator–prey interactions as a driver of synapsid heterodonty; enhanced raptorial biting (puncture/gripping) aided prey capture, but this behaviour was probably an evolutionary antecedent to more complex processing (shearing/tearing) of larger herbivore prey by the late Early to Middle Permian. The record of Shashajaia supports the notion that the predatory feeding ecology of sphenacodontoids emerged in palaeotropical western Pangea by late Carboniferous times.
Quantum Criticality in doped CePd_1-xRh_x Ferromagnet
Creators: name: Sereni, J. G.
name: Westerkamp, T.
name: Kuechler, R.
name: Caroca-Canales, N.
name: Gegenwart, P.
name: Geibel, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: CePd_1-xRh_x alloys exhibit a continuous evolution from ferromagnetism (T_C= 6.5 K) at x = 0 to a mixed valence (MV) state at x = 1. We have performed a detailed investigation on the suppression of the ferromagnetic (F) phase in this alloy using dc-(χ_dc) and ac-susceptibility (χ_ac), specific heat (C_m), resistivity (ρ) and thermal expansion (β) techniques. Our results show a continuous decrease of T_C (x) with negative curvature down to T_C = 3K at x*= 0.65, where a positive curvature takes over. Beyond x*, a cusp in cac is traced down to T_C* = 25 mK at x = 0.87, locating the critical concentration between x = 0.87 and 0.90. The quantum criticality of this region is recognized by the -log(T/T_0) dependence of C_m/T, which transforms into a T^-q (~0.5) one at x = 0.87. At high temperature, this system shows the onset of valence instability revealed by a deviation from Vegard's law (at x_V~0.75) and increasing hybridization effects on high temperature χ_dc and ρ. Coincidentally, a Fermi liquid contribution to the specific heat arises from the MV component, which becomes dominant at the CeRh limit. In contrast to antiferromagnetic systems, no C_m/T flattening is observed for x > x_cr rather the mentioned power law divergence, which coincides with a change of sign of β. The coexistence of F and MV components and the sudden changes in the T dependencies are discussed in the context of randomly distributed magnetic and Kondo couplings.
description: 11 pages, 11 figures
A Markov Chain Approach for Myopic Multi-hop Relaying: Outage and Diversity Analysis
Creators: name: Nicolaides, Andreas
name: Psomas, Constantinos
name: Krikidis, Ioannis
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, a cooperative protocol is investigated for a multi-hop network consisting of relays with buffers of finite size, which may operate in different communication modes. The protocol is based on the myopic decode-and-forward strategy, where each node of the network cooperates with a limited number of neighboring nodes for the transmission of the signals. Each relay stores in its buffer the messages that were successfully decoded, in order to forward them through the appropriate channel links, based on its supported communication modes. A complete theoretical framework is investigated that models the evolution of the buffers and the transitions at the operations of each relay as a state Markov chain (MC). We analyze the performance of the proposed protocol in terms of outage probability and derive an expression for the achieved diversity-multiplexing tradeoff, by using the state transition matrix and the related steady state of the MC. Our results show that the proposed protocol outperforms the conventional multi-hop relaying scheme and the system's outage probability as well as the achieved diversity order depend on the degree of cooperation among neighboring nodes and the communication model that is considered for every relay of the network.
description: 13 pages, 8 figures
Piezoplasmonics: strain-induced tunability of plasmon resonance in AlAs quantum wells
Creators: name: Khisameeva, A. R.
name: Muravev, V. M.
name: Kukushkin, I. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We demonstrate tuning of two-dimensional (2D) plasmon spectrum in modulation-doped AlAs quantum wells via the application of in-plane uniaxial strain. We show that dramatic change in the plasma spectrum is caused by strain-induced redistribution of charge carriers between anisotropic $X_x$ and $X_y$ valleys. Discovered piezoplasmonic effect provides a tool to study the band structure of 2D systems. We use piezoplasmonic effect to measure how the inter-valley energy splitting depends on the deformation. This dependency yields the AlAs deformation potential of $E_2 = (5.6 \pm 0.3)$~eV.
Topological Hall Effect in a Topological Insulator Interfaced with a Magnetic Insulator
Creators: name: Li, Peng
name: Ding, Jinjun
name: Zhang, Steven S. -L.
name: Kally, James
name: Pillsbury, Timothy
name: Heinonen, Olle G.
name: Rimal, Gaurab
name: Bi, Chong
name: DeMann, August
name: Field, Stuart B.
name: Wang, Weigang
name: Tang, Jinke
name: Jiang, J. S.
name: Hoffmann, Axel
name: Samarth, Nitin
name: Wu, Mingzhong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: A topological insulator (TI) interfaced with a magnetic insulator (MI) may host an anomalous Hall effect (AHE), a quantum AHE, and a topological Hall effect (THE). Recent studies, however, suggest that coexisting magnetic phases in TI/MI heterostructures may result in an AHE-associated response that resembles a THE but in fact is not. This article reports a genuine THE in a TI/MI structure that has only one magnetic phase. The structure shows a THE in the temperature range of T=2-3 K and an AHE at T=80-300 K. Over T=3-80 K, the two effects coexist but show opposite temperature dependencies. Control measurements, calculations, and simulations together suggest that the observed THE originates from skyrmions, rather than the coexistence of two AHE responses. The skyrmions are formed due to an interfacial DMI interaction. The DMI strength estimated is substantially higher than that in heavy metal-based systems.
Positional Determinacy of Games with Infinitely Many Priorities
Creators: name: Graedel, Erich
name: Walukiewicz, Igor
Publisher: name: arXiv
Year: 2006
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences
subject: F.4.1; G.2

description: We study two-player games of infinite duration that are played on finite or infinite game graphs. A winning strategy for such a game is positional if it only depends on the current position, and not on the history of the play. A game is positionally determined if, from each position, one of the two players has a positional winning strategy. The theory of such games is well studied for winning conditions that are defined in terms of a mapping that assigns to each position a priority from a finite set. Specifically, in Muller games the winner of a play is determined by the set of those priorities that have been seen infinitely often; an important special case are parity games where the least (or greatest) priority occurring infinitely often determines the winner. It is well-known that parity games are positionally determined whereas Muller games are determined via finite-memory strategies. In this paper, we extend this theory to the case of games with infinitely many priorities. Such games arise in several application areas, for instance in pushdown games with winning conditions depending on stack contents. For parity games there are several generalisations to the case of infinitely many priorities. While max-parity games over omega or min-parity games over larger ordinals than omega require strategies with infinite memory, we can prove that min-parity games with priorities in omega are positionally determined. Indeed, it turns out that the min-parity condition over omega is the only infinitary Muller condition that guarantees positional determinacy on all game graphs.
Classical dimers and dimerized superstructure in orbitally degenerate honeycomb antiferromagnet
Creators: name: Jackeli, G.
name: Khomskii, D. I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We discuss the ground state of the spin-orbital model for spin-one ions with partially filled $t_{2g}$ levels on a honeycomb lattice. We find that the orbital degrees of freedom induce a spontaneous dimerization of spins and drive them into nonmagnetic manifold spanned by hard-core dimer (spin-singlet) coverings of the lattice. The cooperative ``dimer Jahn-Teller'' effect is introduced through a magnetoelastic coupling and is shown to lift the orientational degeneracy of dimers leading to a peculiar valence bond crystal pattern. The present theory provides a theoretical explanation of nonmagnetic dimerized superstructure experimentally seen in Li$_2$RuO$_3$ compound at low temperatures.
description: to appear in Phys. Rev. Lett
Open-Source Synthesizable Analog Blocks for High-Speed Link Designs: 20-GS/s 5b ENOB Analog-to-Digital Converter and 5-GHz Phase Interpolator
Creators: name: Kim, Sung-Jin
name: Myers, Zachary
name: Herbst, Steven
name: Lim, ByongChan
name: Horowitz, Mark
Publisher: name: arXiv
Year: 2020
Subjects: subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: Using digital standard cells and digital place-and-route (PnR) tools, we created a 20 GS/s, 8-bit analog-to-digital converter (ADC) for use in high-speed serial link applications with an ENOB of 5.6, a DNL of 0.96 LSB, and an INL of 2.39 LSB, which dissipated 175 mW in 0.102 mm2 in a 16nm technology. The design is entirely described by HDL so that it can be ported to other processes with minimal effort and shared as open source.
description: 2020 IEEE Symposium on VLSI Circuits
Low-excitation blobs in the Magellanic Clouds
Creators: name: Meynadier, F.
name: Heydari-Malayeri, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Aims : We study an unknown, or very poorly known, interstellar HII component in the Magellanic Clouds. This is the first study ever devoted to this class of objects, which we call Low-excitation blobs (LEBs). Methods : We used low-dispersion spectroscopy carried out at ESO to obtain emission line intensities of Ha, Hb, and [OIII] (4959+5007) for 15 objects in the Large Magellanic Cloud and 14 objects in the Small Magellanic Cloud. Results are displayed in excitation ([oiii]/Hb ratio) versus Hb luminosity diagrams. Results : We show the presence of an LEB component in the Magellanic Clouds and study its relationship with the already known class of high-excitation blobs (HEBs). The newly found LEBs are lower excitation counterparts of HEBs and are powered by less massive exciting stars. Further study of LEBs is expected to provide new pieces of information for a better understanding the low mass end of the upper initial mass function in the Magellanic Clouds.
description: Accepted in A&A
A Systematic Mapping Study in AIOps
Creators: name: Notaro, Paolo
name: Cardoso, Jorge
name: Gerndt, Michael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computers and Society (cs.CY)
subject: Artificial Intelligence (cs.AI)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: IT systems of today are becoming larger and more complex, rendering their human supervision more difficult. Artificial Intelligence for IT Operations (AIOps) has been proposed to tackle modern IT administration challenges thanks to AI and Big Data. However, past AIOps contributions are scattered, unorganized and missing a common terminology convention, which renders their discovery and comparison impractical. In this work, we conduct an in-depth mapping study to collect and organize the numerous scattered contributions to AIOps in a unique reference index. We create an AIOps taxonomy to build a foundation for future contributions and allow an efficient comparison of AIOps papers treating similar problems. We investigate temporal trends and classify AIOps contributions based on the choice of algorithms, data sources and the target components. Our results show a recent and growing interest towards AIOps, specifically to those contributions treating failure-related tasks (62%), such as anomaly detection and root cause analysis.
Determining the evolutionary history of galaxies by astrocladistics : some results on close galaxies
Creators: name: Fraix-Burnet, Didier
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Astrocladistics, a methodology borrowed from biology, is an objective way of understanding galaxy diversity through evolutionary relationships. It is based on the evolution of all the available parameters describing galaxies and thus integrates the complexity of these objects. Through the formalization of the concepts around galaxy formation and evolution, and the identification of the processes of diversification (build up, secular evolution, interaction, merging/accretion, sweeping/ejection), galaxy diversity can be expected to organize itself in a hierarchy. About 500 galaxies described by about 40 observables have now been analysed and several robust trees found. For instance, we show that the Dwarf Galaxies of the Local Group all derive from a common ancestral kind of objects. We identify three evolutionary groups, each one having its own characteristics and own evolution. The Virgo galaxies present a relatively regular diversification, with rather few violent events such as major mergers. Diversification in another sample made of gas-poor galaxies in different environments appears to be slightly more complicated with several diverging evolutionary groups. Work on a large sample of galaxies at non-zero redshifts is in progress and is pioneering a brand new approach to exploit data from the big extragalactic surveys.
description: To be published online at http://www.sf2a.asso.fr/
Magnetocaloric effect in hexacyanochromate Prussian blue analogs
Creators: name: Manuel, Esperanca
name: Evangelisti, Marco
name: Affronte, Marco
name: Okubo, Masashi
name: Train, Cyrille
name: Verdaguer, Michel
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on the magnetocaloric properties of two molecule-based hexacyanochromate Prussian blue analogs, nominally CsNi[Cr(CN)_6](H_2O) and Cr_3[Cr(CN)_6]_2x12(H_2O). The former orders ferromagnetically below Tc=90 K, whereas the latter is a ferrimagnet below Tc=230 K. For both, we find significantly large magnetic entropy changes DSm associated to the magnetic phase transitions. Notably, our studies represent the first attempt to look at molecule-based materials in terms of the magnetocaloric effect for temperatures well above the liquid helium range.
description: 4 pages, 6 figures
Covariant 3+1 correspondence of the spatially covariant gravity and the degeneracy conditions
Creators: name: Hu, Yu-Min
name: Gao, Xian
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A necessary condition for a generally covariant scalar-tensor theory to be ghostfree is that it contains no extra degrees of freedom in the unitary gauge, in which the Lagrangian corresponds to the spatially covariant gravity. Comparing with analysing the scalar-tensor theory directly, it is simpler to map the spatially covariant gravity to the generally covariant scalar-tensor theory using the gauge recovering procedures. In order to ensure the resulting scalar-tensor theory to be ghostfree absolutely, i.e., no matter if the unitary gauge is accessible, a further covariant degeneracy/constraint analysis is required. We develop a method of covariant 3+1 correspondence, which map the spatially covariant gravity to the scalar-tensor theory in 3+1 decomposed form without fixing any coordinates. Then the degeneracy conditions to remove the extra degrees of freedom can be found easily. As an illustration of this approach, we show how the Horndeski theory is recovered from the spatially covariant gravity. This approach can be used to find more general ghostfree scalar-tensor theory.
description: 19 pages, 1 figure