cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Wenn interne Wissenschaftskommunikation extern sichtbar wird - Herausforderungen und Potenziale
Creators: name: Frick, Claudia
Publisher: name: Zenodo
Year: 2021
Subjects: Open Science
Scholarly Communication
Science Communication

description: Infolge der Coronakrise wird breit diskutiert, wie wichtig fachliche Informationen und externe Wissenschaftskommunikation in solchen Situationen sind. Der Diskurs über die Wichtigkeit eines Verständnisses wissenschaftlichen Arbeitens und wissenschaftlicher Prozesse steht demgegenüber eher am Rand. Diese Kompetenzen werden meist situationsbedingt diskutiert und vermittelt. Das gilt insbesondere für das Verständnis interner Wissenschaftskommunikation, also die Kommunikationsprozesse unter Forschenden. Dank des Podcasts von Christian Drosten und der Berichterstattung über eine Studie seiner Arbeitsgruppe, wissen mittlerweile mehr Menschen, zumindest grundlegend, was ein Preprint ist. Die Berichterstattung über die genannte Studie und der darum gestrickte Skandal, konnten allerdings nur so viel Aufwind erlangen, weil in der Breite der Bevölkerung das Verständnis für die Kommunikationsprozesse unter Forschenden fehlt. Die Schlussfolgerung, dass Kritik an einer Studie durch andere Forschende unweigerlich bedeutet, dass diese „grob falsch“ sein muss, kann nur unterstützen, wer mit den internen Kommunikationsprozessen von Wissenschaft nicht vertraut ist. Hier polarisiert sich die Gesellschaft also nicht erst bei der unterschiedlichen Interpretation von Informationen, sondern bereits beim Verständnis, wie Wissenschaft abläuft und intern kommuniziert. Nicht nur Preprints, sondern alle Komponenten von Open Science haben durch die Coronakrise Auftrieb bekommen, werden in immer mehr Bereichen angewendet und machen so nicht nur Wissenschaft selbst, sondern auch interne Wissenschaftskommunikation extern immer sichtbarer. Dies stellt die externe Wissenschaftskommunikation vor neue Herausforderungen. Anhand der genannten Studie werfen wir einen Blick auf das dabei erfolgte Open Peer-Review und gehen der Frage nach, wie wir solche Kommunikationsprozesse künftig vermitteln wollen und müssen.
A multigrid implementation of the Fourier acceleration method for Landau gauge fixing
Creators: name: Cucchieri, A.
name: Mendes, T.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present a new implementation of the Fourier acceleration method for Landau gauge fixing. By means of a multigrid inversion we are able to avoid the use of the fast Fourier transform. This makes the method more flexible, and well suited for vector and parallel machines. We study the performance of this algorithm on serial and on parallel (APE100) machines for the 4-dimensional SU(2) case. We find that our method is equivalent to the standard implementation of Fourier acceleration already on a serial machine, and that it parallelizes very efficiently: its computational cost shows a linear speedup with the number of processors. We have also implemented, on the parallel machines, a version of the method using conjugate gradient instead of multigrid. This leads to an algorithm that is efficient at intermediate lattice volumes.
description: 6 pages, including 2 postscript figures; corrected a misprint; to appear in Physical Review D
Architectural Techniques to Enhance DRAM Scaling
Creators: name: Yoongu Kim
Publisher: name: Carnegie Mellon University
Year: 2015
Subjects: subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering

description:
For decades, main memory has enjoyed the continuous scaling of its physical substrate: DRAM (Dynamic Random Access Memory). But now, DRAM scaling has reached a threshold where DRAM cells cannot be made smaller without jeopardizing their robustness. This thesis identifies two specific challenges to DRAM scaling, and presents architectural techniques to overcome them.
First, DRAM cells are becoming less reliable. As DRAM process technology scales down to smaller dimensions, it is more likely for DRAM cells to electrically interfere with each
other’s operation. We confirm this by exposing the vulnerability of the latest DRAM chips to a reliability problem called disturbance errors. By reading repeatedly from the same cell in DRAM, we show that it is possible to corrupt the data stored in nearby cells. We demonstrate this phenomenon on Intel and AMD systems using a malicious program that generates many DRAM accesses. We provide an extensive characterization of the errors, as well as their behavior, using a custom-built testing platform. After examining various potential ways of addressing the problem, we propose a low-overhead solution that effectively
prevents the errors through a collaborative effort between the DRAM chips and the DRAM controller. Second, DRAM cells are becoming slower due to worsening variation in DRAM process technology. To alleviate the latency bottleneck, we propose to unlock fine-grained parallelism within a DRAM chip so that many accesses can be served at the same time. We take a close look at how a DRAM chip is internally organized, and find that it is divided into small partitions of DRAM cells called subarrays. Although the subarrays are mostly independent, they occasionally rely upon some global circuit components that force the subarrays to be operated one at a time. To overcome this limitation, we devise a series of non-intrusive changes to DRAM architecture that increases the autonomy of the subarrays
and allows them to be accessed concurrently. We show that such parallelism across subarrays provides large performance gains at low cost. Lastly, we present a powerful DRAM simulator that facilitates the design space exploration of main memory. Unlike previous simulators, our simulator is easy to modify, allowing DRAM architectural changes to be modeled quickly and accurately. This is why
our simulator is able to provide out-of-the-box support for a wide array of contemporary DRAM standards. Our simulator is also the fastest, outperforming the next fastest simulator
by more than a factor of two.
Decalogo AI
Creators: name: University of Milan
Publisher: name: Zenodo
Year: 2025
Subjects: responsible use of AI

description: L’Università degli Studi di Milano sostiene l’uso di strumenti di Intelligenza Artificiale a supporto di tutte le sue attività, mantenendo fermo prima di tutto il principio di porre la persona al centro di ogni iniziativa.Lo scopo dunque del Decalogo “Governare l’Intelligenza Artificiale in Ateneo” non è quello di vincolare ma piuttosto di promuovere un utilizzo etico, legittimo e consapevole di strumenti di Intelligenza Artificiale, recependo i più recenti documenti normativi in materia e le buone pratiche già promosse da molte università e centri di ricerca a livello nazionale e internazionale.

The University of Milan intends to foster the use of Artificial Intelligence tools to support all its activities, while holding firm that individuals are at the core of each of its initiatives. Therefore, the goal of the document “Governing Artificial Intelligence within the University” is not to provide limits, but rather to promote an ethical, legally-compliant and conscious use of Artificial Intelligence tools, by implementing the latest regulatory provisions on the subject, as well as best practices already adopted by many universities and research centres in Italy and abroad.

(Gruppo di lavoro sulla AI: SIlvana Castano, Alfio Ferrara, Ivano Eberini, Pierluigi Perri, Giovanni Ziccardi, Mirko Bove, Laura Colombo, Daniela Scaccia, Paola Galimberti, Paola Lupi)
Interacting Electrons and Localized Spins: Exact Results from Conformal Field Theory
Creators: name: Frojdh, Per
name: Johannesson, Henrik
Publisher: name: arXiv
Year: 1995
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We give a brief review of the Kondo effect in a one-dimensional interacting electron system, and present exact results for the impurity thermodynamic response based on conformal field theory.
description: 6 pages LaTeX. To appear in the Proceedings of the 1995 Schladming Winter School on Low-Dimensional Models in Statistical Physics and Quantum Field Theory
Decalogo AI
Creators: name: University of Milan
Publisher: name: Zenodo
Year: 2025
Subjects: responsible use of AI

description: L’Università degli Studi di Milano sostiene l’uso di strumenti di Intelligenza Artificiale a supporto di tutte le sue attività, mantenendo fermo prima di tutto il principio di porre la persona al centro di ogni iniziativa.Lo scopo dunque del Decalogo “Governare l’Intelligenza Artificiale in Ateneo” non è quello di vincolare ma piuttosto di promuovere un utilizzo etico, legittimo e consapevole di strumenti di Intelligenza Artificiale, recependo i più recenti documenti normativi in materia e le buone pratiche già promosse da molte università e centri di ricerca a livello nazionale e internazionale.

(Gruppo di lavori sulla AI: SIlvana Castano, Alfio Ferrara, Ivano Eberini, Pierluigi Perri, Giovanni Ziccardi, Mirko Bove, Laura Colombo, Daniela Scaccia, Paola Galimberti, Paola Lupi)
Exact relation between canonical and metric energy-momentum tensors for higher derivative tensor field theories
Creators: name: Ilin, R. V.
name: Paston, S. A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss the relation between canonical and metric energy-momentum tensors for field theories with actions that can depend on the higher derivatives of tensor fields in a flat spacetime. In order to obtain it we use a modification of the Noether's procedure for curved space-time. For considered case the difference between these two tensors turns out to have more general form than for theories with no more than first order derivatives. Despite this fact we prove that the difference between corresponding integrals of motion still has the form of integral over 2-dimensional surface that is infinitely remote in the spacelike directions.
description: LaTeX, 11 pages
-Catenin-SOX2 signaling regulates the fate of developing airway epithelium
Creators: name: Brockway, B. L.
name: Que, J.
name: Stripp, B. R.
name: Hashimoto, S.
name: Snyder, J. C.
name: Drake, J. A.
name: Chen, H.
name: Randell, S. H.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Wnt–β-catenin signaling regulates cell fate during organ development and postnatal tissue maintenance, but its contribution to specification of distinct lung epithelial lineages is still unclear. To address this question, we used a Cre recombinase (Cre)-LoxP approach to activate canonical Wnt signaling ectopically in developing lung endoderm. We found that persistent activation of canonical Wnt signaling within distal lung endoderm was permissive for normal development of alveolar epithelium, yet led to the loss of developing bronchiolar epithelium and ectasis of distal conducting airways. Activation of canonical Wnt led to ectopic expression of a lymphoid-enhancing factor and a T-cell factor (LEF and TCF, respectively) and absence of SRY (sex-determining region Y)-box 2 (SOX2) and tumor protein p63 (p63) expression in proximal derivatives. Conditional loss of SOX2 in airways phenocopied epithelial differentiation defects observed with ectopic activation of canonical Wnt. Our data suggest that Wnt negatively regulates a SOX2-dependent signaling program required for developmental progression of the bronchiolar lineage.
Bulbothrix isidiza Hale
Creators: name: R, Jeanne dos
name: Silva, eis
name: Aptroot, André
name: E, Marcela
name: S, ugenia da
name: Cáceres, ilva
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Lecanoromycetes
Lecanorales
Parmeliaceae
Bulbothrix
Bulbothrix isidiza

description: Bulbothrix isidiza (Nyl.) Hale
PREVIOUS REPORT. — Mistry (1998).
description: Published as part of R, Jeanne dos, Silva, eis, Aptroot, André, E, Marcela, S, ugenia da & Cáceres, ilva, 2023, Lichens from dry central Brazil: a checklist of lichenized fungi from Distríto Federal and Goiás, pp. 117-133 in Cryptogamie, Mycologie 20 (9) on page 119, DOI: 10.5252/cryptogamie-mycologie2023v44a9, http://zenodo.org/record/8434271
How the sun shines
Creators: name: Bahcall, John N.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: This historical essay describes the struggle to understand how the sun shines. The story begins with the disagreement between Kelvin and Darwin over the age of the sun in the middle of the 19th century and continues through the revelations of solar neutrino experiments at the conclusion of the 20th century.
description: Published by the Nobel e-Museum, June 29, 2000. See http://www.nobel.se/physics/articles . Related material: http://www.sns.ias.edu/~jnb
title: Disciplinary Media Literacy: A Multiple Case Study Examining a Media Literacy Online Professional Development for High School Teachers
Creators: name: (:Unkn) Unknown
Publisher: name: George Mason University
Year: 2022
Subjects: subject: Constructivism
subject: Disciplinary Media Literacy
subject: Media Literacy Education
subject: Multiple Case Study
subject: Online Professional Development
subject: Teacher Competency
subject: Teacher education
subject: Instructional design
subject: Secondary education

description: This dissertation was conducted using case study methodology to examine how teachers of different content areas integrate media literacy into their instruction to address the specialized knowledge and discourses of their disciplines after participating in a media literacy online professional development, how they applied the content from the online professional development to design media literacy instruction, and the changes in their perceived competency with the instructional integration of media literacy as well as their own media literacy while participating in a media literacy online professional development. Findings indicated that teachers incorporated media literacy strategies and concepts to privilege knowledge, ways of making meaning, and discourses specific to their disciplines. They applied content from the online professional development to build background knowledge, offer explicit media literacy instruction, give students opportunities to apply media literacy strategies, and incorporate media creation to demonstrate student learning. They perceived their media literacy instructional and personal competency changed with critical consumption but not with creating or publishing media. Recommendations include implementing a disciplinary media literacy framework to design and deliver instruction, refining the online professional development, and leveraging media literacy concepts for teaching advocacy and social justice as well as teachers’ own online civic engagement.
Finite Lattice Hamiltonian Computations in the P-Representation: the Schwinger Model
Creators: name: Aroca, J. M.
name: Fort, H.
name: Alvarez-Campot, Gonzalo
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The Schwinger model is studied in a finite lattice by means of the P-representation. The vacuum energy, mass gap and chiral condensate are evaluated showing good agreement with the expected values in the continuum limit.
description: 6 pages, 5 eps figures, espcrc2
title: Digital Campus Podcast - Episode 51 – The Inevitable iPad
Creators: name: Center For History And New Media
Publisher: name: George Mason University
Year: 2010

description: Originally published by the Center for History and New Media through the Digital Campus podcast (http://digitalcampus.tv). This work is licensed under a Creative Commons Attribution 3.0 United States License (http://creativecommons.org/licenses/by/3.0/us/).
description: Jennifer Howard of The Chronicle of Higher Education joins the podcast as the regulars give Dan a rest and Tom takes a turn at hosting for the first time. On the morrow of the big Apple announcement, the Digital Campus crew offers its thoughts on the possible impact of the iPad for teaching, publishing, and [...]
Negative effective mass, optical multistability and Fano line-shape control via mode tunneling in double cavity optomechanical system
Creators: name: Prakash, Vaibhav N
name: Bhattacherjee, Aranya B
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We theoretically investigate the optical and mechanical properties of a double cavity optomechanical system with one stationary and two harmonically bound mirrors. We show that it is possible for the mechanical mirrors in this system to posses negative effective mass. Working within the strong coupling and the resolved sideband regime, we show that the displacement of the middle resonator is multistable under certain constrains. We also point to the existence of optomechanically induced absorption (OMIA) and Fano resonance. Owing to the negative effective mass, our scheme can be exploited in the study of quantum optomechanical metamaterials.
description: Comments are welcome
How to identify the roots of broad research topics and fields? The introduction of RPYS sampling using the example of climate change research
Creators: name: Haunschild, Robin
name: Marx, Werner
name: Thor, Andreas
name: Bornmann, Lutz
Publisher: name: arXiv
Year: 2018
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: Since the introduction of the reference publication year spectroscopy (RPYS) method and the corresponding program CRExplorer, many studies have been published revealing the historical roots of topics, fields, and researchers. The application of the method was restricted up to now by the available memory of the computer used for running the CRExplorer. Thus, many users could not perform RPYS for broader research fields or topics. In this study, we present various sampling methods to solve this problem: random, systematic, and cluster sampling. We introduce the script language of the CRExplorer which can be used to draw many samples from the population dataset. Based on a large dataset of publications from climate change research, we compare RPYS results using population data with RPYS results using different sampling techniques. From our comparison with the full RPYS (population spectrogram), we conclude that the cluster sampling performs worst and the systematic sampling performs best. The random sampling also performs very well but not as well as the systematic sampling. The study therefore demonstrates the fruitfulness of the sampling approach for applying RPYS.
description: 30 pages, 6 figures, 3 script listings, and 4 tables
Efficiently Learning Mixtures of Mallows Models
Creators: name: Liu, Allen
name: Moitra, Ankur
Publisher: name: arXiv
Year: 2018
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Mixtures of Mallows models are a popular generative model for ranking data coming from a heterogeneous population. They have a variety of applications including social choice, recommendation systems and natural language processing. Here we give the first polynomial time algorithm for provably learning the parameters of a mixture of Mallows models with any constant number of components. Prior to our work, only the two component case had been settled. Our analysis revolves around a determinantal identity of Zagier which was proven in the context of mathematical physics, which we use to show polynomial identifiability and ultimately to construct test functions to peel off one component at a time. To complement our upper bounds, we show information-theoretic lower bounds on the sample complexity as well as lower bounds against restricted families of algorithms that make only local queries. Together, these results demonstrate various impediments to improving the dependence on the number of components. They also motivate the study of learning mixtures of Mallows models from the perspective of beyond worst-case analysis. In this direction, we show that when the scaling parameters of the Mallows models have separation, there are much faster learning algorithms.
description: 35 pages
Magnetic Impurity in a Luttinger Liquid: A Conformal Field Theory Approach
Creators: name: Frojdh, Per
name: Johannesson, Henrik
Publisher: name: arXiv
Year: 1995
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We study the low-temperature properties of a spin-\onehalf\ magnetic impurity coupled to a one-dimensional interacting electron system. Using the newly developed formalism by Affleck and Ludwig, with a scale invariant boundary condition replacing the impurity, we exploit boundary conformal field theory to deduce the impurity thermal and magnetic response. In the case of only forward electron scattering off the impurity, we predict the same critical scaling as for the two-channel Kondo effect for non-interacting electrons, but with a novel Wilson ratio. Backward electron scattering off the impurity destabilizes this behavior and drives the system to a new fixed point. In the case of equal amplitudes for forward- and backward scattering {\em (Kondo interaction)}, we show that there are only two types of scaling behaviors consistent with the symmetries of the problem: {\em either} a local Fermi liquid {\em or} a critical theory with an anomalous specific heat. The latter case agrees with a recent ``poor-man-scaling'' result proposed by Furusaki and Nagaosa.
description: 57 pages REVTeX (uses amssymb) and 5 postscript figures (uuencoded compressed tar file)
Bulbothrix linteolocarpa Marcelli
Creators: name: R, Jeanne dos
name: Silva, eis
name: Aptroot, André
name: E, Marcela
name: S, ugenia da
name: Cáceres, ilva
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Lecanoromycetes
Lecanorales
Parmeliaceae
Bulbothrix
Bulbothrix linteolocarpa

description: Bulbothrix linteolocarpa Marcelli
PREVIOUS REPORT. — Mistry (1998).
description: Published as part of R, Jeanne dos, Silva, eis, Aptroot, André, E, Marcela, S, ugenia da & Cáceres, ilva, 2023, Lichens from dry central Brazil: a checklist of lichenized fungi from Distríto Federal and Goiás, pp. 117-133 in Cryptogamie, Mycologie 20 (9) on page 119, DOI: 10.5252/cryptogamie-mycologie2023v44a9, http://zenodo.org/record/8434271
Spectroscopy of B_s and D_s Mesons
Creators: name: Mackenzie, Paul B.
name: Ryan, Sinead M.
name: Simone, James N.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We study Bs and Ds spectroscopy in quenched lattice QCD using the Fermilab approach to heavy quarks. We obtain results at four lattice spacings, $a$, using $O(a)$-improved Wilson quarks. We compare and contrast the various methods for heavy quarks on the lattice, discussing discussing which methods work best for different physical systems and the ease with which calculations may be performed.
description: 6 pages, 4 figures, espcrc2.sty (included)
Probing a spin transfer controlled magnetic nanowire with a single nitrogen-vacancy spin in bulk diamond
Creators: name: Solyom, Adrian
name: Flansberry, Zackary
name: Tschudin, Märta A.
name: Leitao, Nathaniel
name: Pioro-Ladrière, Michel
name: Sankey, Jack C.
name: Childress, Lilian I.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The point-like nature and exquisite magnetic field sensitivity of the nitrogen vacancy (NV) center in diamond can provide information about the inner workings of magnetic nanocircuits in complement with traditional transport techniques. Here we use a single NV in bulk diamond to probe the stray field of a ferromagnetic nanowire controlled by spin transfer (ST) torques. We first report an unambiguous measurement of ST tuned, parametrically driven, large-amplitude magnetic oscillations. At the same time, we demonstrate that such magnetic oscillations alone can directly drive NV spin transitions, providing a potential new means of control. Finally, we use the NV as a local noise thermometer, observing strong ST damping of the stray field noise, consistent with magnetic cooling from room temperature to $\sim$150 K.
description: 6 pages, 5 figures, plus supplementary information
O(alpha_s^2) Corrections to e+e- to ttbar Total and Differential Cross Sections Near Threshold
Creators: name: Nagano, T.
name: Ota, A.
name: Sumino, Y.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recently full O(alpha_s^2, alpha_s*beta, beta^2) corrections to the threshold total cross section for e+e- to ttbar have been calculated, and the reported corrections turned out to be unexpectedly large. We study how to reduce theoretical uncertainties of the cross section. We adopt a new mass definition proposed by Beneke, which incorporates a renormalon-pole cancellation in the total energy of a static quark-antiquark pair. This improves the convergence of the 1S resonance mass, while the normalization of the cross section scarcely changes. We argue that resummations of logarithms are indispensable, since two largely separated scales dictate the shape of the cross section. As a first step, we resum logarithms in the Coulombic part of the t-tbar potential and observe a considerable improvement in the convergence of corresponding corrections. There still remain, however, large corrections, which arise from a 1/r^2 term in the ttbar potential. We also calculate full O(alpha_s^2, alpha_s*beta, beta^2) corrections to the momentum distributions of top quarks in the threshold region. Corrections to the distribution shape are small on the 1S resonance. At higher energies, corrections become larger.
description: 23 pages, LaTeX2e, 16 PostScript figures, uses graphicx.sty; Descriptions on the momentum distribution are enlarged; A derivation of the momentum distribution formula is added as an appendix; Other minor changes; In ver.4, comparison with O(alfs) final-state interaction corrections to momentum distribution added; two figures added
Lithium Niobate Resonators and Filters Toward Reconfigurable Filter Banks
Creators: name: Yen, Sean
Publisher: name: Carnegie Mellon University
Year: 2016
Subjects: subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Reconfigurable filter banks are an enabling technology for wireless communications. Spectrum scarcity motivates radios that can adjust to new wireless standards and block interferers. These can be achieved by programming a reconfigurable filter bank.
title: Towards Personalized Pedestrian Route Recommendation Based on Implicit Visual Preference
Creators: name: Che, Lin
name: Raubal, Martin
name: Kiefer, Peter
Publisher: name: TU Wien
Year: 2023
Subjects: Location-based Services (LBS)

description: Walking is an everyday, healthy, and eco-friendly mode of trans-portation. The visual environment of roads is crucial for pedestrians' walkingexperiences. However, limited research has explored modeling pedestrians'visual preferences for road environments. In this work-in-progress paper, wepropose a personalized pedestrian route recommender system based on im-plicit visual preferences. Our work primarily consists of three parts: 1. Inves-tigate the relationship between human eye movement and visual preferencestowards the environment. 2. Explore route recommender system methodsbased on pedestrians' implicit visual preferences. 3. Dynamically adjust andupdate recommended results in response to pedestrians' real-time changesin eye movement. This recommender system framework based on implicitvisual preferences also holds significant potential for numerous other do-mains, such as supermarkets, museums, and more.
Medical Image Imputation from Image Collections
Creators: name: Dalca, Adrian V.
name: Bouman, Katherine L.
name: Freeman, William T.
name: Rost, Natalia S.
name: Sabuncu, Mert R.
name: Golland, Polina
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We present an algorithm for creating high resolution anatomically plausible images consistent with acquired clinical brain MRI scans with large inter-slice spacing. Although large data sets of clinical images contain a wealth of information, time constraints during acquisition result in sparse scans that fail to capture much of the anatomy. These characteristics often render computational analysis impractical as many image analysis algorithms tend to fail when applied to such images. Highly specialized algorithms that explicitly handle sparse slice spacing do not generalize well across problem domains. In contrast, we aim to enable application of existing algorithms that were originally developed for high resolution research scans to significantly undersampled scans. We introduce a generative model that captures fine-scale anatomical structure across subjects in clinical image collections and derive an algorithm for filling in the missing data in scans with large inter-slice spacing. Our experimental results demonstrate that the resulting method outperforms state-of-the-art upsampling super-resolution techniques, and promises to facilitate subsequent analysis not previously possible with scans of this quality. Our implementation is freely available at https://github.com/adalca/papago .
description: Accepted at IEEE Transactions on Medical Imaging (\c{opyright} 2018 IEEE)
Width difference in the Bs system from lattice HQET
Creators: name: Gimenez, V.
name: Reyes, J.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present recent results for the prediction of the Bs lifetime difference from lattice Heavy Quark Effective Theory simulations. In order to get a next-to-leading order result we have calculated the matching between QCD and HQET and the two loop anomalous dimension in the HQET for all the ΔB=2 operators, in particular for the operators which enter in the width difference. We obtain for the Bs lifetime difference, (ΔΓ_Bs/Γ_Bs)=(5.1+/- 1.9+/- 1.7)10^(-2).
description: 4 pages, LaTeX. Talk given at International Conference on Hyperons, Charm and Beauty Hadrons, Valencia, Spain, 27-30 Jun 2000. Some misprints corrected. No result changed
Perfect Lattice Perturbation Theory: A Study of the Anharmonic Oscillator
Creators: name: Bietenholz, W.
name: Struckmann, T.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: As an application of perfect lattice perturbation theory, we construct an O(λ) perfect lattice action for the anharmonic oscillator analytically in momentum space. In coordinate space we obtain a set of 2-spin and 4-spin couplings \propto λ, which we evaluate for various masses. These couplings never involve variables separated by more than two lattice spacings. The O(λ) perfect action is simulated and compared to the standard action. We discuss the improvement for the first two energy gaps ΔE_1, ΔE_2 and for the scaling quantity ΔE_2 / ΔE1 in different regimes of the interaction parameter, and of the correlation length.
description: LaTex, 27 pages, 9 figures
Offene Lehre und Forschung an der TU Hamburg | Den kulturellen Wandel gestalten
Creators: name: Dürkop, Axel
name: Feldsien-Sudhaus, Inken
name: Hapke, Thomas
name: Rajski, Beate
Publisher: name: Zenodo
Year: 2019
Subjects: Open Science
Open Education
Open Access
Open Data
Policy
Kultureller Wandel
OER
Open-Source-Software

description: Das Poster visualisiert den angestrebten kulturellen Wanden an der TU Hamburg ausgehend von der Policy für Offenheit in Forschung und Lehre, die der Akademische Senat am 26.09.2019 verabschiedet hat. Oben zeigt das Poster zunächst die geteilten Wertvorstellungen, unter denen Open Science und Open Education an der TU Hamburg verstanden werden. Im mittleren Bereich sind verschiedene Instrumente gelistet, durch die der kulturelle Wandel hin zu Offenheit in Forschung und Lehre unterstützt und gefördert wird. Den Abschluss schließlich bilden vier beispielhafte offene Produkte aus den beiden Diskursen Open Science und Open Education, zu deren Entwicklung und Veröffentlichung die Policy für Offenheit in Forschung und Lehre motivieren will.
description: Wir danken Jan Dittbrenner für die Unterstützung bei der visuellen Umsetzung des Posters.
Critical Behavior of Hierarchical Ising Models
Creators: name: Igloi, Ferenc
name: Lajko, Peter
name: Szalma, Ferenc
Publisher: name: arXiv
Year: 1995
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We consider the critical behavior of two-dimensional layered Ising models where the exchange couplings between neighboring layers follow hierarchical sequences. The perturbation caused by the non-periodicity could be irrelevant, relevant or marginal. For marginal sequences we have performed a detailed study, which involved analytical and numerical calculations of different surface and bulk critical quantities in the two-dimensional classical as well as in the one-dimensional quantum version of the model. The critical exponents are found to vary continuously with the strength of the modulation, while close to the critical point the system is essentially anisotropic: the correlation length is diverging with different exponents along and perpendicular to the layers.
description: 21 pages, plain TeX, 3 figures available on request, to appear in Phys. Rev. B
Bulbothrix sensibilis Hale
Creators: name: R, Jeanne dos
name: Silva, eis
name: Aptroot, André
name: E, Marcela
name: S, ugenia da
name: Cáceres, ilva
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Lecanoromycetes
Lecanorales
Parmeliaceae
Bulbothrix
Bulbothrix sensibilis

description: Bulbothrix sensibilis (B.Stein & Zahlbr.) Hale
PREVIOUS REPORT. — Mistry (1998).
description: Published as part of R, Jeanne dos, Silva, eis, Aptroot, André, E, Marcela, S, ugenia da & Cáceres, ilva, 2023, Lichens from dry central Brazil: a checklist of lichenized fungi from Distríto Federal and Goiás, pp. 117-133 in Cryptogamie, Mycologie 20 (9) on page 119, DOI: 10.5252/cryptogamie-mycologie2023v44a9, http://zenodo.org/record/8434271
Myosin X and its motorless isoform differentially modulate dendritic spine development by regulating trafficking and retention of vasodilator-stimulated phosphoprotein
Creators: name: Cheney, R. E.
name: Raines, A. N.
name: Lin, W.-H.
name: Webb, D. J.
name: Hurley, J. T.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: Myosin X (Myo10) is an unconventional myosin with two known isoforms: full-length (FL)-Myo10 that has motor activity, and a recently identified brain-expressed isoform, headless (Hdl)-Myo10, which lacks most of the motor domain. FL-Myo10 is involved in the regulation of filopodia formation in non-neuronal cells; however, the biological function of Hdl-Myo10 remains largely unknown. Here, we show that FL- and Hdl-Myo10 have important, but distinct, roles in the development of dendritic spines and synapses in hippocampal neurons. FL-Myo10 induces formation of dendritic filopodia and modulates filopodia dynamics by trafficking the actin-binding protein vasodilator-stimulated phosphoprotein (VASP) to the tips of filopodia. By contrast, Hdl-Myo10 acts on dendritic spines to enhance spine and synaptic density as well as spine head expansion by increasing the retention of VASP in spines. Thus, this study demonstrates a novel biological function for Hdl-Myo10 and an important new role for both Myo10 isoforms in the development of dendritic spines and synapses.
Cold and Hot Dark Matter from a Single Nonthermal Relic
Creators: name: Brustein, Ram
name: Hadad, Merav
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The origin of dark matter in the universe may be scalar particles produced by amplification of quantum fluctuations during a period of dilaton-driven inflation. We show, for the first time, that a single species of particles, depending on its mass and interactions, can be a source of both cold and hot dark matter simultaneously. Detection of such weakly interacting particles with masses below a fraction of an eV presents a new challenge for dark matter searches.
description: 10 pages, 1 figure
Rotation matrix, Harmonic balance and Notation from Transverse motion instability of a submerged moored buoy
Creators: name: J. Orszaghova
name: H. Wolgamot
name: S. Draper
name: R. Eatock Taylor
name: P. H. Taylor
name: A. Rafiee
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: 91103 Ocean Engineering
subject: FOS: Environmental engineering
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Expression for the rotation matrix R. Details on the harmonic balance method, including the matrix form. Notation/nomenclature table of all variables used in the paper.
Constraining the cosmic abundance of stellar remnants with multi-TeV gamma-rays
Creators: name: Graff, David S.
name: Freese, Katherine
name: Walker, Terry
name: Pinsonneault, Marc
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: If galactic halos contain stellar remnants, the infra-red flux from the remnant progenitors would contribute to the opacity of multi-TeV gamma-rays. The multi-TeV gamma-ray horizon is established to be at a redshift z>0.034 by the observation of the blazar Mkn501 . By requiring that the optical depth due to γγ---> e+ e- be less than one for a source at z=0.034 we limit the cosmological density of stellar remnants, Omega_rm \le (2-4) x 10^-3 h_70^-1 (h_70 is the Hubble constant in units of 70 km sec-1 Mpc-1) and thus strongly constrain stellar remnants as a cosmologically significant source of dark matter.
description: 6 pages, Submitted to ApJ Letters
The domain-wall model in an asymptotic-free dynamics
Creators: name: Aoki, S.
name: Nagai, K.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We investigate a possibility that the rough gauge problem, which have appeared to be a main reason for failures of lattice chiral gauge theories, is cured by an asymptotic-free dynamics. Taking the domain-wall model in 2(+1) dimensions with SU(2) gauge group, we carry out the quenched simulation of gauge fields in the extra dimension. By studying fermion spectra in several volumes, we show that the chiral zero modes exist on the wall without having the spontaneous symmetry breaking thanks to the asymptotic-free dynamics. This result suggests that the rough gauge problem is solved in some class of lattice chiral fermions as well as in 4 dimensions if an asymptotic-free dynamics is incorporated.
description: 11 pages (7 figures), Latex (epsf style-file needed)
Tau Neutrinos Favored over Sterile Neutrinos in Atmospheric Muon Neutrino Oscillations
Creators: name: Kamiokande Collaboration
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The previously published atmospheric neutrino data did not distinguish whether muon neutrinos were oscillating into tau neutrinos or sterile neutrinos, as both hypotheses fit the data. Using data recorded in 1100 live-days of the Super-Kamiokande detector, we use three complementary data samples to study the difference in zenith angle distribution due to neutral currents and matter effects. We find no evidence favoring sterile neutrinos, and reject the hypothesis at the 99% confidence level. On the other hand, we find that oscillation between muon and tau neutrinos suffices to explain all the results in hand.
description: 9 pages with 2 figures, submitted to PRL
Non-Hermitian topology: a unifying framework for the Andreev versus Majorana states controversy
Creators: name: Avila, J.
name: Peñaranda, F.
name: Prada, E.
name: San-Jose, P.
name: Aguado, R.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Andreev bound states (ABSs) in hybrid semiconductor-superconductor nanowires can have near-zero energy in parameter regions where band topology predicts trivial phases. This surprising fact has been used to challenge the interpretation of a number of transport experiments in terms of non-trivial topology with Majorana zero modes (MZMs). We show that this ongoing ABS versus MZM controversy is fully clarified when framed in the language of non-Hermitian topology, the natural description for open quantum systems. This change of paradigm allows us to understand topological transitions and the emergence of pairs of zero modes more broadly, in terms of exceptional point (EP) bifurcations of system eigenvalue pairs in the complex plane. Within this framework, we show that some zero energy ABSs are actually non-trivial, and share all the properties of conventional MZMs, such as the recently observed $2e^2/h$ conductance quantization. From this point of view, any distinction between such ABS zero modes and conventional MZMs becomes artificial. The key feature that underlies their common non-trivial properties is an asymmetric coupling of Majorana components to the reservoir, which triggers the EP bifurcation.
description: 8 pages, 6 figures
Changes of graph structure of transition probability matrices indicate the slowest kinetic relaxations
Creators: name: Okushima, Teruaki
name: Niiyama, Tomoaki
name: Ikeda, Kensuke S.
name: Shimizu, Yasushi
Publisher: name: arXiv
Year: 2018
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Graphs of the most probable transitions for a transition probability matrix, $e^{τK}$, i.e., the time evolution matrix of the transition rate matrix $K$ over a finite time interval $τ$, are considered. We study how the graph structures of the most probable transitions change as functions of $τ$, thereby elucidating that a kinetic threshold $τ_g$ for the graph structures exists. Namely, for $τ
description: 8 figures
Bulbothrix silicisrea Marcelli & Benatti
Creators: name: R, Jeanne dos
name: Silva, eis
name: Aptroot, André
name: E, Marcela
name: S, ugenia da
name: Cáceres, ilva
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Lecanoromycetes
Lecanorales
Parmeliaceae
Bulbothrix
Bulbothrix silicisrea

description: Bulbothrix silicisrea Marcelli & Benatti
PREVIOUS REPORT. — Benatti (2012).
description: Published as part of R, Jeanne dos, Silva, eis, Aptroot, André, E, Marcela, S, ugenia da & Cáceres, ilva, 2023, Lichens from dry central Brazil: a checklist of lichenized fungi from Distríto Federal and Goiás, pp. 117-133 in Cryptogamie, Mycologie 20 (9) on page 119, DOI: 10.5252/cryptogamie-mycologie2023v44a9, http://zenodo.org/record/8434271
A programmable two-qubit solid-state quantum processor under ambient conditions
Creators: name: Wu, Yang
name: Wang, Ya
name: Qin, Xi
name: Rong, Xing
name: Du, Jiangfeng
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum computers, which take advantage of the superposition and entanglement of physical states, could outperform their classical counterparts in solving problems with technological impact, such as factoring large numbers and searching databases. A quantum processor executes algorithms by applying a programmable sequence of gates to an initialized state of qubits, which coherently evolves into a final state containing the result of the computation. Although quantum processors with a few qubits have been demonstrated on multiple quantum computing platforms, realization of solid-state programmable quantum processor under ambient conditions remains elusive. Here we report a programable quantum processor that can be programmed with fifteen parameters to realize arbitrary unitary transformations on two spin-qubits in a nitrogen-vacancy (NV) center in diamond. We implemented the Deutsch-Jozsa and Grover search algorithms with average success rates above 80\%. This programmable two-qubit processor could form a core component of a large-scale quantum processor, and the methods used here are suitable for such a device.
Supplementary Material from Simultaneous parameter estimation and variable selection via the logit-normal continuous analogue of the spike-and-slab prior
Creators: name: W. Thomson
name: S. Jabbari
name: A. E. Taylor
name: W. Arlt
name: D. J. Smith
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences

description: Further details on the methodology and sampling performance
title: Newspaper Column: Lake Anne Center Celebrates
Creators: name: Nicoson, William J.
Publisher: name: The Connection
Year: 1999
Subjects: subject: Reston (Va.)
subject: Lake Anne
subject: Reston (VA) Citizens Association (RCA)

description: PDF file distilled from original WordPerfect document. Original size 11" x 8.5".
description: This weekend Reston’s revived anniversary festival will be celebrated in a revived Lake Anne Village Center. It’s fitting that Reston’s birth be honored in its birth-place which, restored and reanimated, deserves itself to be celebrated. Reston Citizens Association directors Jim Traylor and Shannon Stout remembered festivals of years past which brought Restonians together in a celebration of their unique community and have devoted many hours of careful planning to revive the same community spirit this year. They have put together a comprehensive coalition of civic organizations to finance the festival and remind Restonians of the recreational, gastronomic, artistic, and economic opportunities made available to them by their community.