cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Locus: LiDAR-based Place Recognition using Spatiotemporal Higher-Order Pooling
Creators: name: Vidanapathirana, Kavisha
name: Moghadam, Peyman
name: Harwood, Ben
name: Zhao, Muming
name: Sridharan, Sridha
name: Fookes, Clinton
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Place Recognition enables the estimation of a globally consistent map and trajectory by providing non-local constraints in Simultaneous Localisation and Mapping (SLAM). This paper presents Locus, a novel place recognition method using 3D LiDAR point clouds in large-scale environments. We propose a method for extracting and encoding topological and temporal information related to components in a scene and demonstrate how the inclusion of this auxiliary information in place description leads to more robust and discriminative scene representations. Second-order pooling along with a non-linear transform is used to aggregate these multi-level features to generate a fixed-length global descriptor, which is invariant to the permutation of input features. The proposed method outperforms state-of-the-art methods on the KITTI dataset. Furthermore, Locus is demonstrated to be robust across several challenging situations such as occlusions and viewpoint changes in 3D LiDAR point clouds. The open-source implementation is available at: https://github.com/csiro-robotics/locus .
description: ICRA 2021. Implementation available at: https://github.com/csiro-robotics/locus
Photolyases from Saccharomyces cerevisiae and Escherichia coli recognize common binding determinants in DNA containing pyrimidine dimers.
Creators: name: Sancar, G B
name: Baer, M
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1989

description: DNA photolyases catalyze the light-dependent repair of pyrimidine dimers in DNA. The results of nucleotide sequence analysis and spectroscopic studies demonstrated that photolyases from Saccharomyces cerevisiae and Escherichia coli share 37% amino acid sequence homology and contain identical chromophores. Do the similarities between these two enzymes extend to their interactions with DNA containing pyrimidine dimers, or does the organization of DNA into nucleosomes in S. cerevisiae necessitate alternative or additional recognition determinants? To answer this question, we used chemical and enzymatic techniques to identify the contacts made on DNA by S. cerevisiae photolyase when it is bound to a pyrimidine dimer and compared these contacts with those made by E. coli photolyase and by a truncated derivative of the yeast enzyme when bound to the same substrate. We found evidence for a common set of interactions between the photolyases and specific phosphates in the backbones of both strands as well as for interactions with bases in both the major and minor grooves of dimer-containing DNA. Superimposed on this common pattern were significant differences in the contributions of specific contacts to the overall binding energy, in the interactions of the enzymes with groups on the complementary strand, and in the extent to which other DNA-binding proteins were excluded from the region around the dimer. These results provide strong evidence both for a conserved dimer-binding motif and for the evolution of new interactions that permit photolyases to also act as accessory proteins in nucleotide excision repair. The locations of the specific contacts made by the yeast enzyme indicate that the mechanism of nucleotide excision repair in this organism involves incision(s) at a distance from the pyrimidine dimer.
Sequence and structure of the Drosophila melanogaster ovarian tumor gene and generation of an antibody specific for the ovarian tumor protein.
Creators: name: Kalfayan, L J
name: Steinhauer, W R
name: Walsh, R C
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1989

description: Sequencing cDNA and genomic DNA from the ovarian tumor gene revealed a gene with seven introns spanning 4.5 kilobases. The proline-rich, hydrophilic otu protein is novel. An antibody prepared to a beta-gal-otu fusion protein recognized a 110-kilodalton ovarian protein which was altered in the ovaries of otu gene mutants.
Reflections on a Measurement of the Gravitational Constant Using a Beam Balance and 13 Tons of Mercury
Creators: name: Schlamminger, S.
name: Pixley, R. E.
name: Nolting, F.
name: Schurr, J.
name: Straumann, U.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: In 2006, a final result of a measurement of the gravitational constant $G$ performed by researchers at the University of Zürich was published. A value of $G=6.674\,252(122)\times 10^{-11}\,\mbox{m}^3\,\mbox{kg}^{-1}\,\mbox{s}^{-2}$ was obtained after an experimental effort that lasted over one decade. Here, we briefly summarize the measurement and discuss the strengths and weaknesses of this approach.
description: 13 pages, 5 figures accepted for publication in Phil. Trans. R. Soc. A
Dimension of Tensor Network varieties
Creators: name: Bernardi, Alessandra
name: De Lazzari, Claudia
name: Gesmundo, Fulvio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 15A69, 81P45

description: The tensor network variety is a variety of tensors associated to a graph and a set of positive integer weights on its edges, called bond dimensions. We determine an upper bound on the dimension of the tensor network variety. A refined upper bound is given in cases relevant for applications such as varieties of matrix product states and projected entangled pairs states. We provide a range (the "supercritical range") of the parameters where the upper bound is sharp.
description: 27 pages, 3 figures. Final version, to appear in Communications in Contemporary Mathematics
title: Le principe d’autonomie dans les projets internationaux d’aide humanitaire
title: l’exemple d’une petite ONG suisse
titleType: Subtitle
Creators: name: Fischer, Justine
Publisher: name: Unknown
Year: 0
Subjects: subject: aide humanitaire
subject: autonomie
subject: éthique

description: Ce travail de recherche a pour intention de brosser un tableau de la place octroyée au principe éthique d’autonomie dans le système de valeur d’une ONG précise, ainsi que dans le système de valeurs des volontaires qu’elle mandate. L’étude aboutit à l’identification du dialogue et de la collaboration comme éléments essentiels à la cohérence entre valeurs affichées et valeurs pratiquées, ainsi que comme impératifs au développement de soins de qualité. La recherche est menée selon une démarche qualitative. Les entretiens semi-dirigés sont utilisés comme méthode d’investigation et de récolte de données. Le jury a relevé une approche méthodologique rigoureuse et une excellente approche historique de l’humanitaire.
Equivalence between module categories over quiver Hecke algebras and Hernandez-Leclerc's categories in general types
Creators: name: Naoi, Katsuyuki
Publisher: name: arXiv
Year: 2021
Subjects: subject: Representation Theory (math.RT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 17B37, 81R50

description: We prove in full generality that the generalized quantum affine Schur-Weyl duality functor, introduced by Kang-Kashiwara-Kim, gives an equivalence between the category of finite-dimensional modules over a quiver Hecke algebra and a certain full subcategory of finite-dimensional modules over a quantum affine algebra which is a generalization of the Hernandez-Leclerc's category $\mathcal{C}_Q$. This was previously proved in untwisted $ADE$ types by Fujita using the geometry of quiver varieties, which is not applicable in general. Our proof is purely algebraic, and so can be extended uniformly to general types.
description: 40 pages, 1 figure, changed the title in version 3; changed the proof Proposition 5.2.5 completely, corrected unclear expressions and typos in version 2
title: Les directives anticipées en psychiatrie
title: le défi d’un partenariat
titleType: Subtitle
Creators: name: Drozdek, Dorota
Publisher: name: Unknown
Year: 0
Subjects: subject: droits du patient
subject: décision
subject: volonté
subject: psychiatrie
subject: autonomie
subject: relation soignant-soigné

description: La récente modification de la loi sur la santé publique dans le canton de Vaud prévoit que toute personne capable de discernement peut manifester sa volonté par rapport à des situations futures où elle ne serait plus apte à décider d’elle-même. Cette expression d’une volonté libre et éclairée est connu sous le nom de «directives anticipées». Le présent travail s’intéresse à l’application de cette nouvelle loi dans le contexte d’une hospitalisation psychiatrique, plus précisément, dans la section spécialisée des troubles de l’humeur. Des données empiriques ont été recueillies au cours des entretiens semi-structurés. Elles ont été traitées de manière qualitative. Classées par thème, elle ont permis de présenter précisément le processus d’élaboration des DA (directives anticipées ) et de donner des réponses à la question de recherche. Le jury a relevé l’excellence de ce travail tant sur le plan du contenu que de la démarche.
S-phase-specific transcription regulatory elements are present in a replication-independent testis-specific H2B histone gene.
Creators: name: Hwang, I
name: Chae, C B
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1989

description: The testis-specific H2B histone (TH2B) gene is expressed in pachytene spermatocytes during meiotic prophase I in the absence of any significant DNA synthesis. Unlike somatic histones, synthesis of testis-specific histones is not affected by inhibitors of DNA synthesis. A genomic rat TH2B gene was cloned by using a DNA fragment derived from TH2B cDNA as a probe. Expression of the cloned TH2B was investigated by gene transfer experiments. From these studies, we found that the 5' upstream region of the cloned TH2B gene contained S-phase-specific transcription elements which regulated expression of a reporter gene in an S-phase-specific manner. The S-phase-regulatory element was found to be located in two regions containing CCAAT elements between -153 and -110 base pairs (bp) and an octamer element (ATTTGCAT) between -109 and -84 bp. The two regions were required for a maximal stimulation of transcription of the cloned TH2B gene in S phase. On the other hand, only the octamer element was reported be important for the S-phase-specific transcription of human H2B gene. Since the synthesis of the TH2B histone is independent of DNA synthesis and specific for pachytene spermatocytes in vivo, the presence of the S-phase-specific transcription regulatory elements in the TH2B gene is surprising.
Accompagner un patient demandant à mourir et la prise de décision face à cette demande
Creators: name: Dos Santos, Sandra
Publisher: name: Unknown
Year: 0
Subjects: subject: rôle infirmier
subject: accompagnement
subject: fin de vie
subject: décision
subject: euthanasie

description: Recherche de type qualitatif et exploratoire. Cette recherche a pour but d’explorer l’expérience vécue des infirmières dans l’accompagnement d’un patient demandant à mourir et la prise de décision face à cette demande. Les principaux résultats démontrent les tensions en raison de l'appréciation subjective de la demande par les infirmières. Ils montrent l’importance d’avoir un cadre législatif concernant les demandes d’euthanasie. Le jury a relevé l’intérêt de la thématique ainsi que le cadre de référence clair.
Effective magnetic monopole mechanism for localized electron pairing in HTS
Creators: name: Diamantini, M. C.
name: Trugenberger, C. A.
name: Vinokur, V. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The mechanism responsible for spatially localized, strong coupling electron pairing characteristic of high-temperature superconductors (HTS) remains elusive and is a subject of hot debate. Here we propose a new HTS pairing mechanism which is the binding of two electrons residing in adjacent conducting planes of layered HTS materials by effective magnetic monopoles forming between these planes. The pairs localized near the monopoles form real-space seeds for superconducting droplets and strong coupling is due to the topological Dirac quantization condition. The pairing occurs well above the superconducting transition temperature Tc. Localized electron pairing around effective monopoles promotes, upon cooling, the formation of superconducting droplets connected by Josephson links. Global superconductivity arises when strongly coupled granules form an infinite cluster, and global superconducting phase coherence sets in. The resulting Tc is estimated to fall in the range from hundred to thousand Kelvins. Our findings pave the way for tailoring materials with elevated superconducting transition temperatures.
Surface Engineering for Phase Change Heat Transfer: A Review
Creators: name: Attinger, Daniel
name: Frankiewicz, Christophe
name: Betz, Amy R.
name: Schutzius, Thomas M.
name: Ganguly, Ranjan
name: Das, Arindam
name: Kim, C. -J.
name: Megaridis, Constantine M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Among numerous challenges to meet the rising global energy demand in a sustainable manner, improving phase change heat transfer has been at the forefront of engineering research for decades. The high heat transfer rates associated with phase change heat transfer are essential to energy and industry applications; but phase change is also inherently associated with poor thermodynamic efficiencies at low heat flux, and violent instabilities at high heat flux. Engineers have tried since the 1930's to fabricate solid surfaces that improve phase change heat transfer. The development of micro and nanotechnologies has made feasible the high-resolution control of surface texture and chemistry over length scales ranging from molecular levels to centimeters. This paper reviews the fabrication techniques available for metallic and silicon-based surfaces, considering sintered and polymeric coatings. The influence of such surfaces in multiphase processes of high practical interest, e.g., boiling, condensation, freezing, and the associated physical phenomena are reviewed. The case is made that while engineers are in principle able to manufacture surfaces with optimum nucleation or thermofluid transport characteristics, more theoretical and experimental efforts are needed to guide the design and cost-effective fabrication of surfaces that not only satisfy the existing technological needs, but also catalyze new discoveries.
Transcription factor E2F is required for efficient expression of the hamster dihydrofolate reductase gene in vitro and in vivo.
Creators: name: Azizkhan, J C
name: Blake, M C
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1989

description: The dihydrofolate reductase (DHFR) gene encodes an enzyme important for metabolism and cell growth. We have found multiple DNA-protein interactions within the hamster DHFR gene promoter in vitro. These interactions occur over the consensus binding sites for two eucaryotic transcription factors. Sp1 and E2F. The DHFR E2F consensus site possesses a dyad symmetry and is unique in its location immediately 3' to the major transcription start site. The interaction of E2F with the DHFR promoter has been detected in HeLa nuclear extracts, confirmed by using partially purified E2F, and characterized by both enzymatic and chemical assays of the DNA-protein interaction. A mutation of the E2F recognition sequence which abolishes E2F binding to the DHFR promoter results in a two- to fivefold decrease of in vitro transcriptional activity and a fivefold reduction of DHFR promoter activity in transient-expression assays. Thus, the interaction of E2F with the DHFR promoter is required for efficient expression of the DHFR gene.
title: Propre ou sale ?
title: les représentations, un grand impact sur les transmissions nosocomiales
titleType: Subtitle
Creators: name: Benevento, Sonia
name: Durgnat, Muriel
Publisher: name: Unknown
Year: 0
Subjects: subject: hygiène hospitalière
subject: infection
subject: représentation (psychologie)
subject: infirme moteur cérébral
subject: pratique professionnelle

description: Le but de l’étude est de définir les représentations des infirmiers sur l’hygiène, de départager celles qui sont individuelles et collectives, de connaître l’impact de ces représentations sur les comportements de protection ou à risque et de vérifier si ces représentations peuvent être source de comportements négligents. Les résultats montrent que les comportements négligents en matière d’hygiène sont dus à certaines représentations qui appartiennent au soignant et induisent chez lui un comportement à risque. Le jury a relevé la rigueur de la démarche méthodologique.
Black is Beautiful! Alle origini della teologia della liberazione cristiana: la Black Liberation Theology [poster]
Black is Beautiful! Alle origini della teologia della liberazione cristiana: la Black Liberation Theology [poster]
Creators: name: Frau, Francesco
Publisher: name: F. Frau, "Black is Beautiful! Alle origini della teologia della liberazione cristiana: la Black Liberation Theology", in Metti la storia al lavoro! Seconda conferenza italiana di Public History. Pisa, 11-15 giugno 2018
Year: 2022

description: Il progetto si pone come obiettivo, in accordo con la mission dell’Associazione Italiana di Public History, quello di far conoscere ad un vasto pubblico una tematica che in Europa è stata per lungo tempo confinata al mondo accademico. Il dibattito intorno alla teologia della liberazione, infatti, è stato portato avanti attraverso l’utilizzo di un linguaggio complesso, lontano dalla quotidianità. Allo stesso tempo, i temi trattati erano estranei alla società europea per via dell’assenza di una comunità nera al suo interno.
L'utilisation de l'homéopathie par les infirmières dans les lieux de vie
Creators: name: Brot, Frédéric
Publisher: name: Unknown
Year: 0
Subjects: subject: homéopathie
subject: soins infirmeirs
subject: lieu de vie
subject: pratique professionnelle

description: Ce travail part du constat que certaines infirmières utilisent l'homéopathie dans leur pratique quotidienne sans avoir de formation sur le sujet. Cette recherche a pour but de découvrir ces pratiques et d'en comprendre les motivations. Le jury a relevé une construction solide du mémoire ainsi qu'un cadre théorique et une analyse de qualité.
Spectroscopic time series performance of the Mid-Infrared Instrument on the JWST
Creators: name: Bouwman, Jeroen
name: Kendrew, Sarah
name: Greene, Thomas P.
name: Bell, Taylor J.
name: Lagage, Pierre-Olivier
name: Schreiber, Juergen
name: Dicken, Daniel
name: Sloan, G. C.
name: Espinoza, Nestor
name: Scheithauer, Silvia
name: Coulais, Alain
name: Fox, Ori D.
name: Gastaud, Rene
name: Glauser, Adrian M.
name: Jones, Olivia C.
name: Labiano, Alvaro
name: Lahuis, Fred
name: Morrison, Jane E.
name: Murray, Katherine
name: Mueller, Michael
name: Nayak, Omnarayani
name: Wright, Gillian S.
name: Glasse, Alistair
name: Rieke, George
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present here the first ever mid-infrared spectroscopic time series observation of the transiting exoplanet \object{L 168-9 b} with the Mid-Infrared Instrument (MIRI) on the James Webb Space Telescope. The data were obtained as part of the MIRI commissioning activities, to characterize the performance of the Low Resolution Spectroscopy (LRS) mode for these challenging observations. To assess the MIRI LRS performance, we performed two independent analyses of the data. We find that with a single transit observation we reached a spectro-photometric precision of $\sim$50 ppm in the 7-8 \micron range at R=50, consistent with $\sim$25 ppm systematic noise. The derived band averaged transit depth is 524 $\pm$ 15 ppm and 547 $\pm$ 13 ppm for the two applied analysis methods, respectively, recovering the known transit depth to within 1 $σ$. The measured noise in the planet's transmission spectrum is approximately 15-20 \% higher than random noise simulations over wavelengths $6.8 \lesssim λ\lesssim 11$ $μ$m. \added{We observed an larger excess noise at the shortest wavelengths of up to a factor of two, for which possible causes are discussed.} This performance was achieved with limited in-flight calibration data, demonstrating the future potential of MIRI for the characterization of exoplanet atmospheres.
description: Accepted for publishing in PASP, 21 pages, 10 figures
A Review of Biomedical Datasets Relating to Drug Discovery: A Knowledge Graph Perspective
Creators: name: Bonner, Stephen
name: Barrett, Ian P
name: Ye, Cheng
name: Swiers, Rowan
name: Engkvist, Ola
name: Bender, Andreas
name: Hoyt, Charles Tapley
name: Hamilton, William L
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Drug discovery and development is a complex and costly process. Machine learning approaches are being investigated to help improve the effectiveness and speed of multiple stages of the drug discovery pipeline. Of these, those that use Knowledge Graphs (KG) have promise in many tasks, including drug repurposing, drug toxicity prediction and target gene-disease prioritisation. In a drug discovery KG, crucial elements including genes, diseases and drugs are represented as entities, whilst relationships between them indicate an interaction. However, to construct high-quality KGs, suitable data is required. In this review, we detail publicly available sources suitable for use in constructing drug discovery focused KGs. We aim to help guide machine learning and KG practitioners who are interested in applying new techniques to the drug discovery field, but who may be unfamiliar with the relevant data sources. The datasets are selected via strict criteria, categorised according to the primary type of information contained within and are considered based upon what information could be extracted to build a KG. We then present a comparative analysis of existing public drug discovery KGs and a evaluation of selected motivating case studies from the literature. Additionally, we raise numerous and unique challenges and issues associated with the domain and its datasets, whilst also highlighting key future research directions. We hope this review will motivate KGs use in solving key and emerging questions in the drug discovery domain.
Les besoins des femmes primipares en post-partum, entre identification et perception
Creators: name: Haldimann, Laurence
Publisher: name: Unknown
Year: 0
Subjects: subject: maternité
subject: post-partum
subject: besoins du patient
subject: retour à domicile
subject: offre en soins
subject: rôle infirmier
subject: partenariat

description: Dans le cadre de cette étude, une enquête de type qualitative a été menée auprès de quatre femmes se trouvant dans un service hospitalier de post-partum, au moyen d’entretiens semi-structurés, afin de recueillir leur point de vue et le sens qu’elles donnent à leur expérience. Les deux éléments principaux qui ressortent de ces entretiens sont : - d'une part la banalisation de certains soignants face à certaines situations, qui met en évidence, chez les femmes, un besoin de reconnaissance de leur altérité - d'autre part, la notion de partenariat qui est une des clés dans l’identification des besoins des mères et des patients dans tout service de soins. Pour terminer, des propositions ont été formulées et sont des pistes d’optimalisation de la prise en charge des mères primipares, en post-partum.
description: Mémoire de fin d'études volée Automne 02
title: Sustainable use of geoheritage sites and areas across geotrails in UNESCO Global Geoparks and of related elements at Messel Pit World Heritage Site, Germany
Creators: name:  Frey ,    Marie-Luise
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2021

description: The sustainable use of geological resources is a management task, demand and challenge. When the European Geoparks Network was founded in 2000, a new view fell on geosites, geotopes, former quarries as resource areas of rocks and energy provider. Their contribution to regional economic development during their active use has been enormous. Only few scientists identified unique scientific value for geosites or geotopes, e.g. for Messel Pit World Heritage Site, Hesse, Germany with the need for protection for and by the global community. Other scientists with far sightedness directed the view onto a new use: geotourism, education and sustainable development. Their initiative started the first geo-trails in territories called geoparks. Infrastructures were restored and directed into a new use. Not only one geo-trail was created. By the positive acceptance of the population the new infrastructure was now used for their weekend walk. Eyes were opened on the formation history of a landscape, cultural connections were identified. An amazing development followed during the last twenty years. Today UNESCO Global Geoparks have a set of trails serving a variety of topics. Their management involves different measures. Maintenance after creation, as well as up dating and marketing are challenging management tasks. A speciality is using infrastructure of former quarries as geotourism highlight for guided tours. Connecting them with visitor requirements leads to modern geotourism products. They finally result in new or larger economic income with sustainable results like new jobs, income and benefits by e.g. selling products of the region or geoproducts presented in this contribution.
Evaluation of three-loop self-energy master integrals with four or five propagators
Creators: name: Martin, Stephen P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I obtain identities satisfied by the 3-loop self-energy master integrals with four or five propagators with generic masses, including the derivatives with respect to each of the squared masses and the external momentum invariant. These identities are then recast in terms of the corresponding renormalized master integrals, enabling straightforward numerical evaluation of them by the differential equations approach. Some benchmark examples are provided. The method used to obtain the derivative identities relies only on the general form implied by integration by parts relations, without actually following the usual integration by parts reduction procedure. As a byproduct, I find a simple formula giving the expansion of the master integrals to arbitrary order in the external momentum invariant, in terms of known derivatives of the corresponding vacuum integrals.
description: 36 pages, 2 ancillary files. v2 contains a new section on numerical evaluation, including some benchmarks, and some more explanations
NuSTAR Reveals the Comptonizing Corona of the Broad-Line Radio Galaxy 3C 382
Creators: name: Ballantyne, D. R.
name: Bollenbacher, J. M.
name: Brenneman, L. W.
name: Madsen, K. K.
name: Balokovic, M.
name: Boggs, S. E.
name: Christensen, F. E.
name: Craig, W. W.
name: Gandhi, P.
name: Hailey, C. J.
name: Harrison, F. A.
name: Lohfink, A. M.
name: Marinucci, A.
name: Markwardt, C. B.
name: Stern, D.
name: Walton, D. J.
name: Zhang, W. W.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Broad-line radio galaxies (BLRGs) are active galactic nuclei that produce powerful, large-scale radio jets, but appear as Seyfert 1 galaxies in their optical spectra. In the X-ray band, BLRGs also appear like Seyfert galaxies, but with flatter spectra and weaker reflection features. One explanation for these properties is that the X-ray continuum is diluted by emission from the jet. Here, we present two NuSTAR observations of the BLRG 3C 382 that show clear evidence that the continuum of this source is dominated by thermal Comptonization, as in Seyfert 1 galaxies. The two observations were separated by over a year and found 3C 382 in different states separated by a factor of 1.7 in flux. The lower flux spectrum has a photon-index of $Γ=1.68^{+0.03}_{-0.02}$, while the photon-index of the higher flux spectrum is $Γ=1.78^{+0.02}_{-0.03}$. Thermal and anisotropic Comptonization models provide an excellent fit to both spectra and show that the coronal plasma cooled from $kT_e=330\pm 30$ keV in the low flux data to $231^{+50}_{-88}$ keV in the high flux observation. This cooling behavior is typical of Comptonizing corona in Seyfert galaxies and is distinct from the variations observed in jet-dominated sources. In the high flux observation, simultaneous Swift data are leveraged to obtain a broadband spectral energy distribution and indicates that the corona intercepts $\sim 10$% of the optical and ultraviolet emitting accretion disk. 3C 382 exhibits very weak reflection features, with no detectable relativistic Fe K$α$ line, that may be best explained by an outflowing corona combined with an ionized inner accretion disk.
description: 8 pages, 8 figures, accepted by ApJ
While You Live
Creators: name: Salveson, Christopher
Publisher: name: University of Mmassachusetts Amherst
Year: 2022

description:
This project started as inspections of violence in different forms, specifically childhood violence. I created scenes of lost youth and displacement and some kind of fragmentation, or eruption of violence, that seemed to also justify the fragmented nature of the scenes, and how they may have been jaggedly connected. Then I had a strong urge to novelize the characters I had written, I wanted to tell their full story.


The narrator Christian overtakes the novel, so it could be described as an i-novel really. He isn’t always an active participant in the action of what’s happening in the scenes, but he’ll sit back as more of an observer. The narrator’s most salient feature is his need to connect, as he presents a series of failures in accessing, or being accessible to, his friends.
Anisotropy with respect to the applied magnetic field of spin qubit decoherence times
Creators: name: Choi, Yujun
name: Joynt, Robert
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Electron spin qubits are a promising platform for quantum computation. Environmental noise impedes coherent operations by limiting the qubit relaxation ($T_1$) and dephasing ($T_ϕ$) times. There are multiple sources of such noise, which makes it important to devise experimental techniques that can detect the spatial locations of these sources and determine the type of source. In this paper, we propose that anisotropy in $T_1$ and $T_ϕ$ with respect to the direction of the applied magnetic field can reveal much about these aspects of the noise. We investigate the anisotropy patterns of charge noise, evanescent-wave Johnson noise, and hyperfine noise in hypothetical devices. It is necessary to have a rather well-characterized sample to get the maximum benefit from this technique. The general anisotropy patterns are elucidated. We calculate the expected anisotropy for a particular model of a Si/SiGe quantum dot device.
description: 11 pages, 4 figures, and supplemental material (4 pages) Misprints in equations (10), (12), (13), (16), and (17) in the main text and related equations in supplmental material have been corrected from published version
Statistical computation of Boltzmann entropy and estimation of the optimal probability density function from statistical sample
Creators: name: Sui, Ning
name: Li, Min
name: He, Ping
Publisher: name: arXiv
Year: 2014
Subjects: subject: Methodology (stat.ME)
subject: Computational Physics (physics.comp-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: In this work, we investigate the statistical computation of the Boltzmann entropy of statistical samples. For this purpose, we use both histogram and kernel function to estimate the probability density function of statistical samples. We find that, due to coarse-graining, the entropy is a monotonic increasing function of the bin width for histogram or bandwidth for kernel estimation, which seems to be difficult to select an optimal bin width/bandwidth for computing the entropy. Fortunately, we notice that there exists a minimum of the first derivative of entropy for both histogram and kernel estimation, and this minimum point of the first derivative asymptotically points to the optimal bin width or bandwidth. We have verified these findings by large amounts of numerical experiments. Hence, we suggest that the minimum of the first derivative of entropy be used as a selector for the optimal bin width or bandwidth of density estimation. Moreover, the optimal bandwidth selected by the minimum of the first derivative of entropy is purely data-based, independent of the unknown underlying probability density distribution, which is obviously superior to the existing estimators. Our results are not restricted to one-dimensional, but can also be extended to multivariate cases. It should be emphasized, however, that we do not provide a robust mathematical proof of these findings, and we leave these issues with those who are interested in them.
description: 8 pages, 6 figures, MNRAS, in the press
Experimental Demonstration of a Rowland Spectrometer for Spin Waves
Creators: name: Papp, Adam
name: Kiechle, Martina
name: Mendisch, Simon
name: Ahrens, Valentin
name: Sahin, Levent
name: Seitner, Lukas
name: Porod, Wolfgang
name: Csaba, Gyorgy
name: Becherer, Markus
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We experimentally demonstrate the operation of a spin-wave Rowland spectrometer. In the proposed device geometry, spin waves are coherently excited on a diffraction grating and form an interference pattern that spatially separates spectral components of the incoming signal. The diffraction grating was created by focused-ion-beam irradiation, which was found to locally eliminate the ferrimagnetic properties of YIG, without removing the material. We found that in our experiments spin waves were created by an indirect mechanism, by exploiting nonlinear resonance between the grating and the coplanar waveguide. Our work paves the way for complex spin-wave optic devices -- chips that replicate the functionality of integrated optical devices on a chip-scale.
description: 7 pages, 5 figures, presented at Joint European Magnetic Symposia (JEMS) 2020
New Detections of Arsenic, Selenium, and Other Heavy Elements in Two Metal-Poor Stars
Creators: name: Roederer, Ian U.
name: Schatz, Hendrik
name: Lawler, James E.
name: Beers, Timothy C.
name: Cowan, John J.
name: Frebel, Anna
name: Ivans, Inese I.
name: Sneden, Christopher
name: Sobeck, Jennifer S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope to obtain new high-quality spectra covering the 1900 to 2360 Angstrom wavelength range for two metal-poor stars, HD 108317 and HD 128279. We derive abundances of Cu II, Zn II, As I, Se I, Mo II, and Cd II, which have not been detected previously in either star. Abundances derived for Ge I, Te I, Os II, and Pt I confirm those derived from lines at longer wavelengths. We also derive upper limits from the non-detection of W II, Hg II, Pb II, and Bi I. The mean [As/Fe] ratio derived from these two stars and five others in the literature is unchanged over the metallicity range -2.8 < [Fe/H] < -0.6, = +0.28 +/- 0.14 (std. dev. = 0.36 dex). The mean [Se/Fe] ratio derived from these two stars and six others in the literature is also constant, = +0.16 +/- 0.09 (std. dev. = 0.26 dex). The As and Se abundances are enhanced relative to a simple extrapolation of the iron-peak abundances to higher masses, suggesting that this mass region (75 < A < 82) may be the point at which a different nucleosynthetic mechanism begins to dominate the quasi-equilibrium alpha-rich freezeout of the iron peak. = +0.56 +/- 0.23 in HD 108317 and HD 128279, and we infer that lines of Cu I may not be formed in local thermodynamic equilibrium in these stars. The [Zn/Fe], [Mo/Fe], [Cd/Fe], and [Os/Fe] ratios are also derived from neutral and ionized species, and each ratio pair agrees within the mutual uncertainties, which range from 0.15 to 0.52 dex.
description: Accepted for publication in the Astrophysical Journal. 13 pages, 10 figures
Tyrosine phosphorylation of a c-Src-like protein is increased in membranes of CD4- CD8- T lymphocytes from lpr/lpr mice.
Creators: name: Cohen, P
name: Prokop, C
name: Dy, R
name: Ting, J P
name: Earp, H S
name: Katagiri, T
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1989

description: Mice homozygous for the autosomal recessive lpr gene have a disorder that results in autoimmunity and massive accumulation of T lymphocytes lacking CD4 and CD8 surface markers. These abnormal T cells exhibit constitutive tyrosine phosphorylation of a component of the CD3-T-cell receptor complex. We compared membrane tyrosine phosphorylation in lpr/lpr CD4- CD8- T cells and control T cells, lpr membranes exhibited a 7.3-fold increase (n = 16) in tyrosine phosphorylation of a 60-kilodalton protein. The increase was correlated with the Lpr but not the CD4- CD8- phenotype in that p60 phosphorylation was not increased in membranes from normal CD4- CD8- thymocytes. To identify the p60 in lpr cells, we examined the activity of several T-cell tyrosine-specific protein kinases. p56lck phosphorylation was only slightly increased in lpr membranes (2.2-fold; n = 16). Phorbol ester treatment of intact T cells before membrane isolation caused p56lck to migrate as pp60lck; however, pp60lck could be clearly distinguished from the pp60 in lpr cells by two-dimensional gel electrophoresis. The pp60 from lpr cells exhibited several isoforms at pH approximately 6.3 to 6.5. Although on two-dimensional gels pp60c-src had a pI (6.4 to 6.8) within a similar region, p60c-src mRNA, protein, and kinase activities were not increased in lpr cells. In addition, staphylococcal V8 proteolytic cleavage of the lpr pp60 isolated on two-dimensional gels yielded two major fragments, a pattern distinct from that of pp60c-src. However, by using an antiserum against the C-terminal sequence of c-Src and other related kinases, including p59fyn, the pp60 could be immunoprecipitated in greater amounts from lpr than from control T cells. When pp59(fyn) was selectively immunoprecipitated from T-cell membranes with specific antisera, its molecular weight, proteolytic cleavage pattern, and behavior on two-dimensional gels were identical to those of the pp60 from lpr cells. We conclude that p59(fyn) phosphorylation is increased in membranes from lpr/lpr CD4(-) CD8(-) T cells and that the increase is correlated with constitutive tyrosine phosphorylation and perhaps with the expansion of this unusual T-cell population.
Implementing contact angle boundary conditions for second-order Phase-Field models of wall-bounded multiphase flows
Creators: name: Huang, Ziyang
name: Lin, Guang
name: Ardekani, Arezoo M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Numerical Analysis (math.NA)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In the present work, a general formulation is proposed to implement the contact angle boundary conditions for the second-order Phase-Field models, which is applicable to $N$-phase $(N \geqslant 2)$ moving contact line problems. To remedy the issue of mass change due to the contact angle boundary condition, a source term or Lagrange multiplier is added to the original second-order Phase-Field models, which is determined by the consistent and conservative volume distribution algorithm so that the summation of the order parameters and the \textit{consistency of reduction} are not influenced. To physically couple the proposed formulation to the hydrodynamics, especially for large-density-ratio problems, the consistent formulation is employed. The reduction-consistent conservative Allen-Cahn models are chosen as examples to illustrate the application of the proposed formulation. The numerical scheme that preserves the consistency and conservation of the proposed formulation is employed to demonstrate its effectiveness. Results produced by the proposed formulation are in good agreement with the exact and/or asymptotic solutions. The proposed method captures complex dynamics of moving contact line problems having large density ratios.
description: This is an accepted manuscript
SDF à Lausanne... et la santé ? L'influence de l'absence de domicile fixe sur la santé
Creators: name: Dösseger, Béatrice
name: Manueli, Yvan
Publisher: name: Unknown
Year: 0
Subjects: subject: pauvreté
subject: précarité
subject: santé
subject: prévention
subject: promotion de la santé
subject: rôle professionnel

description: Pour répondre à la question de l'influence de l'absence de domicile fixe sur la santé, cinq entretiens ont été menés auprès de personnes SDF à Lausanne et trois auprès de professionnels de la santé et du social. Un questionnaire a été rempli par par vingt-sept personnes SDF. Les entretiens ont permis de dégager deux axes de recherche : - La résilience, comprenant les ressources des personnes interrogées, les mécanismes de défense, le stress et l'adaptation, la crise et la souffrance ainsi que l'estime de soi - La maladie (atteintes et risques dominants), physique et psychique.
description: Mémoire de fin d'études volée Automne 02
Phonon heat conduction in layered anisotropic crystals
Creators: name: Minnich, A. J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The thermal properties of anisotropic crystals are of both fundamental and practical interest, but transport phenomena in anisotropic materials such as graphite remain poorly understood because solutions of the Boltzmann equation often assume isotropy. Here, we extend an analytical solution of the Boltzmann equation to highly anisotropic solids and examine its predictions for graphite. We show that the phonon mean free paths in the cross-plane direction can be comparable to those in the in-plane direction despite the low cross-plane thermal conductivity, which instead arises primarily from the differences in group velocities and phonon frequencies supported along each direction. Additionally, we demonstrate a method to reconstruct the anisotropic mean free path spectrum of crystals with arbitrary dispersion relations without any prior knowledge of their harmonic or anharmonic properties using observations of quasiballistic heat conduction.
Islands in the Fluid: Islands are Common in Cosmology
Creators: name: Ben-Dayan, Ido
name: Hadad, Merav
name: Wildenhain, Elizabeth
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss the possibility of entanglement islands in cosmological spacetimes with a general perfect fluid with an equation of state $w$. We find that flat universes with time-symmetric slices where the Hubble parameter vanishes always have islands on that slice. We then move away from such slices, considering still universes with a general perfect fluid. Under the local thermal equilibrium assumption, the comoving entropy density $s_c$ is constant. As a result, the conditions for an island become an inequality between the energy density (or Hubble parameter) and the temperature at some time of normalization. The consequences are that islands can exist for practically all fluids that are not radiation, i.e. $w\neq 1/3$. We also discuss the ramifications of our results for universes with spatial curvature. Finally, we show that islands occur in the Simple Harmonic Universe model which has no classical singularity at the background level, in contrast to all previous examples where islands occurred only in space-times with singularities.
description: 26 pages, 5 figures
A truncated, secreted form of the epidermal growth factor receptor is encoded by an alternatively spliced transcript in normal rat tissue.
Creators: name: Lee, D C
name: Raymond, V W
name: Harris, J
name: Earp, H S
name: Petch, L A
name: Blasband, A
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1990

description: Two independent cDNA clones corresponding to a 2.7-kilobase (kb) epidermal growth factor receptor (EGF-R) mRNA were isolated from a rat liver cDNA library. Sequence analysis revealed 100% homology in the external domain when compared with the full-length rat EGF-R nucleotide sequence and 80 to 90% similarity relative to the human EGF-R. However, the 3'-terminal sequence of these clones did not match EGF-R or any other known sequence(s) and was distinct from the 3' end of the 2.8-kb mRNA, which encodes a truncated EGF-R in A431 cells. The deduced amino acid sequence revealed an open reading frame which is homologous to the external domain of the EGF-R but which terminates prior to the transmembrane region. Southern blot analysis of rat genomic DNA indicated that the 3'-terminal sequence of this transcript is derived from the EGF-R gene. Analysis of a genomic clone containing the 3' end of the 2.7-kb transcript revealed that this sequence is present as a discrete exon in the mid-region of the receptor gene in proximity to the exon encoding the transmembrane domain. Introduction of an expression vector containing the truncated EGF-R cDNA into Chinese hamster ovary (CHO) cells led to the expression of a 95-kilodalton protein which was detected in conditioned media, by using antisera directed against the EGF-R. A similarly sized protein was also detected in the media of WB cells, a continuous, nontransformed line of rat hepatic epithelial cells. Northern (RNA blot) analysis established that the truncated receptor is encoded by a 2.7-kb transcript found in normal rat liver. Furthermore, Northern analysis of rat poly(A)+ RNA showed that the 2.7-kb EGF-R transcript is expressed at differing levels in various fetal and adult tissues. These data indicate that alternative splicing of the EGF-R primary transcript yields a 2.7-kb mRNA which codes for a truncated form of the receptor. This receptor is secreted by rat hepatic epithelial cells in culture, which suggests that it may be secreted by normal rat cells or tissues and perhaps serve an as yet unknown physiological function.