cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Evidence for deconfined $U(1)$ gauge theory at the transition between toric code and double semion
Creators: name: Dupont, Maxime
name: Gazit, Snir
name: Scaffidi, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Building on quantum Monte Carlo simulations, we study the phase diagram of a one-parameter Hamiltonian interpolating between trivial and topological Ising paramagnets in two dimensions, which are dual to the toric code and the double semion. We discover an intermediate phase with stripe order which spontaneously breaks the protecting Ising symmetry. Remarkably, we find evidence that this intervening phase is gapless due to the incommensurability of the stripe pattern and that it is dual to a $U(1)$ gauge theory exhibiting Cantor deconfinement.
description: 7 pages, 4 figures, supplemental material included (7 pages, 10 figures)
A Novel Method for Studying the Dynamics of Confined Polymers in Nanoparticles in Nanoblends
Creators: name: Cousin, Fabrice
name: Gummel, Jérémie
name: Clemens, Daniel
name: Grillo, Isabelle
name: Boué, François
Publisher: name: arXiv
Year: 2010
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The advances in new technologies have prompted the need for functional systems smaller than the gyration radius of polymer chains. Thus, understanding how nanoconfinement affects polymer properties has been the focus of a lot of research for over a decade. Polystyrene in particular has been reported to be strongly affected when nanoconfined as a thin film and specifically its glass transition temperature (Tg) is reported to decrease with decreasing film thickness. Tremendous effort has been dedicated to developing methods for quantifying the large-scale dynamic of nanoconfined polymers: film dewetting, film contraction, nanobubble inflation, nanoparticle imbedding and healing of deformed surfaces etc. In this work we describe a novel method to study the large scale dynamic and nanomechanical properties of nanoconfined polymers in nanoparticles in nanoblends. Nanoblends of dPS/PBMA were prepared from a mixture of colloidal suspensions of cross-linked PBMA and traces of dPS nanoparticles via water evaporation. The polymer blends were prepared at temperatures well below the glass transition of PS (TgPS) and above the Tg of cross-linked PBMA particles (TgPBMA). In these conditions we expect the PBMA particles to deform under capillary pressure to fill the interstices between them and the glassy PS nanoparticles to remain spherical. During the preparation of the nanoblends the elastic energy is stored within the deformed cross-linked PBMA nanoparticles. Upon annealing the films above TgPS, the PBMA nanoparticles regain their spherical shape and release the stored elastic energy, which induces the deformation of the PS nanoparticles. Small angle neutron scattering is then used to monitor the shape evolution of the PS nanoparticles and to quantify the relaxation dynamics of the polystyrene nanoparticles.
Attack-resilient observer pruning for path-tracking control of Wheeled Mobile Robot
Creators: name: Zheng, Yu
name: Anubi, Olugbenga Moses
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Path-tracking control of wheeled mobile robot (WMR) has gained a lot of research attention, primarily because of its wide applicability -- for example intelligent wheelchairs, exploration-assistant remote WMR. Recent increase in remote and autonomous operations\requirements for WMR has led to more and more use of IoT devices within the control loop. Consequently, providing interfaces for malicious interactions through false data injection attacks (FDIA). Moreover, optimization-based FDIAs have been shown to cause catastrophic consequences in feedback control systems while by-passing any residual-based monitoring system. Since these attacks target system measurement process, this paper focuses on the problem of improving the resiliency of dynamical observers against FDIA. Specifically, we propose an attack-resilient pruning algorithm which attempts to exclude compromised channels from being processed by the observer. The proposed pruning algorithm improves attack-localization precision to $100\%$ with high probability, which correspondingly improves the resiliency of the underlying UKF to FDIA. The improvements due to the developed resilient pruning-based observer is validated through a numerical simulation of a two-layer path-tracking control platform of differential-driven wheeled mobile robot (DDWMR) under FDIA.
description: ASME Dynamic Systems and Control Conference (DSCC 2020)
SN 2008gz - most likely a normal type IIP event
Creators: name: Roy, Rupak
name: Kumar, Brijesh
name: Moskvitin, Alexander S.
name: Benetti, Stefano
name: Fatkhullin, Timur A.
name: Kumar, Brajesh
name: Misra, Kuntal
name: Bufano, Filomena
name: Martin, Ralph
name: Sokolov, Vladimir V.
name: Pandey, S. B.
name: Chandola, H. C.
name: Sagar, Ram
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present BV RI photometric and low-resolution spectroscopic investigation of a type II core-collapse supernova (SN) 2008gz, which occurred in a star forming arm and within a half-light radius (solar metallicity region) of a nearby spiral galaxy NGC 3672. The SN event was detected late and a detailed investigation of its light curves and spectra spanning 200 days suggest that it is an event of type IIP similar to archetypal SNe 2004et and 1999em. However, in contrast to other events of its class, the SN 2008gz exhibits rarely observed V magnitude drop of 1.5 over the period of a month during plateau to nebular phase. Using 0.21 mag of Av as a lower limit and a distance of 25.5 Mpc, we estimate synthesized $^{56}$Ni mass of 0.05 \pm 0.01 M* and a mid-plateau Mv of -16.6 \pm 0.2 mag. The photospheric velocity is observed to be higher than that was observed for SN 2004et at similar epochs, indicating explosion energy was comparable to or higher than SN 2004et. Similar trend was also seen for the expansion velocity of H-envelopes. By comparing its properties with other well studied events as well as by using a recent simulation of pre-SN models of Dessart, Livne & Waldman (2010), we infer an explosion energy range of 2 - 3 x 10$^{51}$ erg and this coupled with the observed width of the forbidden [O I] 6300-6364 Å line at 275 days after the explosion gives an upper limit for the main-sequence (non-rotating, solar metallicity) progenitor mass of 17 M*. Our narrow-band Hα observation, taken nearly 560 days after the explosion and the presence of an emission kink at zero velocity in the Doppler corrected spectra of SN indicate that the event took place in a low luminosity star forming H II region.
description: Accepted for publication in MNRAS
Accessibility of the lowest quintet state of organic molecules through triplet-triplet annihilation; an INDO CI study
Creators: name: Dick, Bernhard
name: Nickel, Bernhard
Publisher: name: Universität Regensburg
Year: 1983
Subjects: subject: Aromatic compounds; Heterocyclic compounds, Role: PRP (Properties) (excitation energies of first excited singlet, triplet, and quintet states of, calcn. of); Molecular orbital (INDO-CI, of org. compds.); Energy level excitation (electronic, of org. compds., accessibility of lowest quintet state of, through triplet-triplet anhilation); org compd lowest quintet state
subject: 540 Chemie

description: By the spin-allowed annihilation of two metastable triplet states (triplet-triplet annihilation-TTA) one electronic ground state (S0) and one electronically excited singlet (Si) or triplet (Ti) or quintet (Qk) state are created, provided the sum of the excitation energies of the two metastable triplet states is sufficient for the creation of the particular excited state. On the basis of semi-empirical calcns. of the excitation energies of T1 and Q1 of forty-six conjugated org. compds. it is shown that Q1 of benzene and some other compds. should be accessible through annihilation of like triplets (homo-TTA), and that Q1 of many compds. should be accessible through annihilation of unlike triplets (hetero-TTA). The population of Q1, competing with that of S1, should cause an unusual magnetic-field dependence of the delayed fluorescence S1 -> S0. In favorable cases, the population of Q1 should lead to an inverse (pos.) magnetic high-field effect on the delayed fluorescence.
description: CAN 99:121472 22-2 Physical Organic Chemistry 56-55-3; 71-43-2; 83-32-9; 84-65-1; 85-01-8; 86-73-7; 86-74-8; 90-47-1; 91-20-3; 91-22-5; 91-64-5; 92-24-0; 92-52-4; 92-82-0; 92-83-1; 92-94-4; 95-14-7; 103-30-0; 106-51-4; 110-86-1; 119-65-3; 120-12-7; 129-00-0; 132-64-9; 135-48-8; 191-07-1; 195-19-7; 198-55-0; 206-44-0; 208-96-8; 217-59-4; 218-01-9; 222-93-5; 259-79-0; 260-94-6; 275-51-4; 289-80-5; 289-95-2; 290-37-9; 290-87-9; 290-96-0; 781-30-6; 2443-46-1; 14458-51-6; 17064-30-1; 68568-08-1 Role: PRP (Properties) (excitation energies of first excited singlet, triplet, and quintet states of, calcn. of)
Il carattere tecnico delle immagini.
Creators: name: Quartesan, Ivan
Publisher: name: Trópos
Year: 2024

description: This paper proposes a comparison between the myth of Prometheus and Pliny the Elder's account of the origins of painting to assess the technical character of images. Such a character is seen as a precondition for understanding their epistemological value, as well as for supporting the need for hermeneutics at any level of artificial intervention. Finally, part of Horst Bredekamp's work will be presented as an example of a methodology that combines hermeneutics and iconology based on such a technical character.
description: Trópos, V. 16 N. 1 (2024): Ermes e Prometeo: sul rapporto possibile tra ermeneutica e filosofia della tecnica
Nicotine metabolism in the cabbage looper trichoplusia ni (Hübner)
Creators: name: Saremba, Brett
Publisher: name: University of British Columbia
Year: 2018

description: Cabbage looper (Trichoplusia ni) larvae are generalist herbivores that feed on numerous cultivated plants. Consuming plant material from diverse plant species exposes these larvae to a wide variety of plant secondary metabolites involved in chemical defense against herbivory. The ability of the cabbage looper larvae to detoxify plant secondary metabolites, such as nicotine, has been attributed to the rapid excretion via the Malpighian (renal) tubules. However, the role of metabolism prior to excretion in the detoxification of nicotine in cabbage looper larvae has not been studied. The first objective of this thesis was to develop an accurate, precise, and sensitive method for the detection and quantification of nicotine and its major metabolites in tissues, blood and feces from insects. The second objective was to determine the appropriate nicotine dose to study the sub-lethal effects of nicotine in cabbage looper larvae. The third and final objective was to determine the metabolic fate of dietary nicotine in cabbage looper larvae. Previous studies have concluded that the cabbage looper does not metabolize nicotine. This thesis showed that the 4th instar larvae of the cabbage looper metabolized dietary nicotine into three distinct metabolites. In addition, the time course for nicotine metabolism and excretion was found to be more rapid than previously reported for other Lepidopteran insects. Taken together these data demonstrate that cabbage looper larvae are capable of efficiently metabolizing nicotine and excreting nicotine and these derived metabolites as a part of their xenobiotic coping mechanism.
Das Schicksal der Vorratsdatenspeicherung
Creators: name: Gietl, Andreas
Publisher: name: Universität Regensburg
Year: 2008
Subjects: subject: 340 Recht

description: Am 11.3.2008 beschloss das Bundesverfassungsgericht, Teile der umstrittenen Vorratsdatenspeicherung — die Einführung einer sechsmonatigen Mindestspeicherpflicht für Telekommunikationsverbindungsdaten — im Wege der einstweiligen Anordnung auszusetzen. Der Autor erläutert Hintergründe und Konsequenzen des Urteils.
Roman Sources for the History of American Catholicism, 1763-1939
Creators: name: Binasco, Matteo
Publisher: name: University of Notre Dame
Year: 2023

description: _Roman Sources for the History of American Catholicism, 1763-1939_ is a comprehensive reference volume, researched and compiled by Matteo Binasco, that introduces readers to the rich content of Roman archives and their vast potential for U.S. Catholic history in particular. In 2014, the University of Notre Dame's Cushwa Center for the Study of American Catholicism hosted a seminar in Rome that examined transatlantic approaches to U.S. Catholic history and encouraged the use of the Vatican Secret Archives and other Roman repositories by today's historians. Participants recognized the need for an English-language guide to archival sources throughout Rome that would enrich individual research projects and the field at large. This volume responds to that need.\u000a\u000aBinasco offers a groundbreaking description of materials relevant to U.S. Catholic history in fifty-nine archives and libraries of Rome. Detailed profiles describe each repository and its holdings relevant to American Catholic studies. A historical introduction by Luca Codignola and Matteo Sanfilippo reviews the intricate web of relations linking the Holy See and the American Catholic Church since the Treaty of Paris of 1763.\u000a\u000aRoman sources have become crucial in understanding the formation and development of the Catholic Church in America, and their importance will continue to grow. This timely source will meet the needs of a ready and receptive audience, which will include scholars of U.S. religious history and American Catholicism as well as Americanist scholars conducting research in Roman archives.
The FAIRplus project: FAIR put into practice
Creators: name: Strubel, Jolanda
Publisher: name: Zenodo
Year: 2022
Subjects: FAIRplus
FAIR
Elixir
IMI
Innovative Medicines Initiative

description: This presentation was given during the Festival of Genomics and Biodata 2022.
 Putting FAIR principles into practice proves to be a complex task that requires expert knowledge in very different fields. The FAIRplus project aims to develop tools and documentation to make data more FAIR. The FAIRplus’ process of “doing FAIR” is presented which was developed while putting FAIR in practice for several IMI projects. Furthermore, the FAIR Cookbook, Dataset Maturity Model and Data Catalog are explained.
description: This project has received funding from the Innovative Medicines Initiative 2 Joint Undertaking under grant agreement No. 802750. This Joint Undertaking receives support from the European Union's Horizon 2020 research and innovation and EFPIA companies.
Ermes dopo Prometeo:
Creators: name: Prunotto, Pietro
Publisher: name: Trópos
Year: 2024

description: The following article aims to outline the relationship between Hermes and Prometheus for Stiegler, that is, between hermeneutics and the philosophy of technology. In order to do this, I will use as a guiding thread an expression that Stiegler uses to describe the myth of Prometheus: a ‘quasi-existential analytic’. The analysis of this expression will require to look carefully at the comparison made by the French philosopher firstly with Heidegger and secondly with Derrida. This will ultimately serve to return directly to Stiegler, and in particular to his reading of the myth of Prometheus, in order to highlight the relationship between hermeneutics and the philosophy of technology.
description: Trópos, V. 16 N. 1 (2024): Ermes e Prometeo: sul rapporto possibile tra ermeneutica e filosofia della tecnica
Zivilrechtliche Ansprüche gegen unerwünschte Mitbenutzer privater Funknetze
Creators: name: Gietl, Andreas
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: 340 Recht

description: Funknetze finden in Privathaushalten und Unternehmen immer größere Verbreitung, da man damit komfortabel kabellos ins Internet gelangen kann. Allerdings ist es auch für ungebetene Gäste leichter in diese Netze einzudringen und den Internet-Anschluss des Betreibers mitzubenutzen. Neben den Strafrechtlichen Fragen, die in der Literatur bereits ausführlich behandelt sind, werfen diese Sachverhalte auch zivilrechtliche Fragen auf, die im Folgenden erläutert werden: Ansprüche auf Unterlassung, auf Schadens- und Wertersatz.
Robustness of s-wave Pairing in Electron-Overdoped $\text{A}_{1-y}\text{Fe}_{2-x}\text{Se}_2$
Creators: name: Fang, Chen
name: Wu, Yang-Le
name: Thomale, Ronny
name: Bernevig, B. Andrei
name: Hu, Jiangping
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Using self consistent mean field and functional renormalization group approaches we show that s-wave pairing symmetry is robust in the heavily electron-doped iron chalcogenides $(\text{K, Cs}) \text{Fe}_{2-x}\text{Se}_2 $. This is because in these materials the leading antiferromagnetic (AFM) exchange coupling is between next-nearest-neighbor (NNN) sites while the nearest neighbor (NN) magnetic exchange coupling is ferromagnetic (FM). This is different from the iron pnictides, where the NN magnetic exchange coupling is AFM and leads to strong competition between s-wave and d-wave pairing in the electron overdoped region. Our finding of a robust s-wave pairing in $(\text{K, Cs}) \text{Fe}_{2-x}\text{Se}_2$ differs from the d-wave pairing result obtained by other theories where non-local bare interaction terms and the NNN $J_2$ term are underestimated. Detecting the pairing symmetry in $(\text{K, Cs}) \text{Fe}_{2-x}\text{Se}_2 $ may hence provide important insights regarding the mechanism of superconducting pairing in iron based superconductors.
description: 10 pages, 16 figures
The More Data, the Better? Demystifying Deletion-Based Methods in Linear Regression with Missing Data
Creators: name: Xu, Tianchen
name: Chen, Kun
name: Li, Gen
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: We compare two deletion-based methods for dealing with the problem of missing observations in linear regression analysis. One is the complete-case analysis (CC, or listwise deletion) that discards all incomplete observations and only uses common samples for ordinary least-squares estimation. The other is the available-case analysis (AC, or pairwise deletion) that utilizes all available data to estimate the covariance matrices and applies these matrices to construct the normal equation. We show that the estimates from both methods are asymptotically unbiased and further compare their asymptotic variances in some typical situations. Surprisingly, using more data (i.e., AC) does not necessarily lead to better asymptotic efficiency in many scenarios. Missing patterns, covariance structure and true regression coefficient values all play a role in determining which is better. We further conduct simulation studies to corroborate the findings and demystify what has been missed or misinterpreted in the literature. Some detailed proofs and simulation results are available in the online supplemental materials.
description: 42 pages
Proletarianization of the Mind:
Creators: name: Nony, Anaïs
Publisher: name: Trópos
Year: 2024

description: This article draws on Bernard Stiegler and Gilbert Simondon’s work to further interrogate the psychic, social, and political problems raised by the development of Artificial Intelligence. Stiegler’s political philosophy of time-consciousness reveals three concomitants urgencies: human memory is conditioned by industrial supplements that are increasingly disruptive, capitalism has produced an entropic condition where life on earth is threaten by toxic systems, the deployment of technologies of spirits has striped individuals of their psychic and collective individuation. I read media theory along with Simondon's philosophy to elucidate the question of mediation in today's reticulated AI-driven society.
description: Trópos, V. 16 N. 1 (2024): Ermes e Prometeo: sul rapporto possibile tra ermeneutica e filosofia della tecnica
Conquaire: Coupling a local GitLab instance with an institutional repository for instant research data publications
Creators: name: Pietsch, Christian
name: Schirrwagen, Jochen
name: Peil, Vitali
Publisher: name: Zenodo
Year: 2019
Subjects: research data
analytical replicability
automatic data quality feedback
data publications
institutional repository
version control
continuous integration
Git
GitLab
scholarly communication

description: Collecting and refining research data or writing software is a part of many researchers' daily
 routine. As a university library, we have been encouraging researchers to add their research output
 to our institutional repository called PUB which is based on the free and open-source LibreCat
 software. Within an international collaboration, we have been able to design and program this
 institutional repository according to our own specifications fairly flexibly. This allowed us to extend
 its scope to data publications recently. However, it remains a system outside the day-to-day work
 flow of researchers who, as we all know, dislike doing what appears to be administrative burdens.
 To remedy this situation, we set up a local GitLab instance and loosely coupled it with our
 institutional repository. We rolled out this instance (called GitLab.UB) university-wide and added it
 to the campus single sign-on system that is also used by our institutional repository. As GitLab is
 built around a versioning software, it becomes easy to mint a DOI that refers to a certain snapshot
 of a GitLab project (even retrospectively). This approach is similar to the service jointly offered by
 GitHub and Zenodo.
 In addition to an effortless way to publish snapshots of research data or software, integrating GitLab
 allows our institutional repository to display the results of automatic checks on the data supplied by
 researchers. Inspired by the badges that indicate a successful continuous integration run on sites like
 GitHub, we show badges that indicate good research data quality including wellformedness for
 certain data formats and adherence to FAIR data principles as far as these can be checked
 automatically. These checks are implemented within the GitLab CI framework that comes with
 GitLab. They will be made available for re-use free of charge at the end of this project.
 Although news of our local GitLab instance so far has spread largely by word of mouth, there has
 been a steady influx of users from various faculties and research institutes as well as their external
 partners. GitLab has also become an integral part of some undergraduate courses. GitLab's
 additional collaboration tools such as issue trackers and wikis have proven to facilitate joint work
 across groups and institutions, and have additionally increased the quality of results.
description: The Conquaire projec ist funded by the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG); grant number: 277747081.
Modern Multiple Imputation with Functional Data
Creators: name: Rao, Aniruddha Rajendra
name: Reimherr, Matthew
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: This work considers the problem of fitting functional models with sparsely and irregularly sampled functional data. It overcomes the limitations of the state-of-the-art methods, which face major challenges in the fitting of more complex non-linear models. Currently, many of these models cannot be consistently estimated unless the number of observed points per curve grows sufficiently quickly with the sample size, whereas, we show numerically that a modified approach with more modern multiple imputation methods can produce better estimates in general. We also propose a new imputation approach that combines the ideas of {\it MissForest} with {\it Local Linear Forest} and compare their performance with {\it PACE} and several other multivariate multiple imputation methods. This work is motivated by a longitudinal study on smoking cessation, in which the Electronic Health Records (EHR) from Penn State PaTH to Health allow for the collection of a great deal of data, with highly variable sampling. To illustrate our approach, we explore the relation between relapse and diastolic blood pressure. We also consider a variety of simulation schemes with varying levels of sparsity to validate our methods.
description: 7 figures (including supplementary material), 8 tables (including supplementary material), 14 pages (including supplementary material)
UnAnonym
Creators: name: Smits, Malte
Publisher: name: Zenodo
Year: 2021
Subjects: Anonymization
Educational game
Research data
Data protection
Personal data
Sensitive data
Research data management
Pseudonymization
Privacy

description: In this digital learning game the goal is to teach the relevance of anonymizing personal and sensitive research data by using riddles and playful tasks. Working with fictional research data a realistic situation is displayed, so that aside from enjoying solving the riddles and playing the game there's also a lot of knowledge shared on how to deal with research data. This game can either be presented and instructed in a workshop for multiple groups or be played privately alone or in a small group.
description: Eine Deutsche Version von 'UnAnonym' ist hier zu finden: https://zenodo.org/record/5205464
Nipah Virus Efficiently Replicates in Human Smooth Muscle Cells without Cytopathic Effect
Creators: name: DeBuysscher, Blair L.
name: Scott, Dana P.
name: Rosenke, Rebecca
name: Wahl, Victoria
name: Feldmann, Heinz
name: Prescott, Joseph
Publisher: name: Robert Koch-Institut
Year: 2021
Subjects: subject: Nipah virus
subject: endothelial cells
subject: smooth muscle cells
subject: henipavirus
subject: paramyxovirus
subject: bat virus
subject: fusion
subject: syncytia
subject: 610 Medizin und Gesundheit

description: Nipah virus (NiV) is a highly pathogenic zoonotic virus with a broad species tropism, originating in pteropid bats. Human outbreaks of NiV disease occur almost annually, often with high case-fatality rates. The specific events that lead to pathogenesis are not well defined, but the disease has both respiratory and encephalitic components, with relapsing encephalitis occurring in some cases more than a year after initial infection. Several cell types are targets of NiV, dictated by the expression of the ephrin-B2/3 ligand on the cell’s outer membrane, which interact with the NiV surface proteins. Vascular endothelial cells (ECs) are major targets of infection. Cytopathic effects (CPE), characterized by syncytia formation and cell death, and an ensuing vasculitis, are a major feature of the disease. Smooth muscle cells (SMCs) of the tunica media that line small blood vessels are infected in humans and animal models of NiV disease, although pathology or histologic changes associated with antigen-positive SMCs have not been reported. To gain an understanding of the possible contributions that SMCs might have in the development of NiV disease, we investigated the susceptibility and potential cytopathogenic changes of human SMCs to NiV infection in vitro. SMCs were permissive for NiV infection and resulted in high titers and prolonged NiV production, despite a lack of cytopathogenicity, and in the absence of detectable ephrin-B2/3. These results indicate that SMC might be important contributors to disease by producing progeny NiV during an infection, without suffering cytopathogenic consequences.
Justifying the Lindahl Solution as an Outcome of Fair cooperation
Creators: name: Buchholz, Wolfgang
name: Peters, Wolfgang
Publisher: name: Universität Regensburg
Year: 2007
Subjects: subject: Public goods; Lindahl equilibrium; Benefit principle; Fairness; Equity
subject: 330 Wirtschaft

description: The motivation for the Lindahl equilibrium is mostly a rather artificial price mechanism. Even though the analogy to a competitive market was emphasised by Lindahl himself, his approach does not directly explain the normative ideas behind his concept. In the present paper we therefore show how the Lindahl equilibrium can be deduced from some simple equity axioms. These normative assumptions are the benefit principle on the one hand and the equal sacrifice principle (or, equivalently, a non-envy condition) as a postulate for distributional equity on the other. Fairness among agents with different preferences and incomes is taken into account by considering their marginal willingness to pay as shadow prices. In this way, the reason why the Lindahl solution can be perceived as an outcome of fair cooperation might become more understandable.
Accelerating Inexact Successive Quadratic Approximation for Regularized Optimization Through Manifold Identification
Creators: name: Lee, Ching-pei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: For regularized optimization that minimizes the sum of a smooth term and a regularizer that promotes structured solutions, inexact proximal-Newton-type methods, or successive quadratic approximation (SQA) methods, are widely used for their superlinear convergence in terms of iterations. However, unlike the counter parts in smooth optimization, they suffer from lengthy running time in solving regularized subproblems because even approximate solutions cannot be computed easily, so their empirical time cost is not as impressive. In this work, we first show that for partly smooth regularizers, although general inexact solutions cannot identify the active manifold that makes the objective function smooth, approximate solutions generated by commonly-used subproblem solvers will identify this manifold, even with arbitrarily low solution precision. We then utilize this property to propose an improved SQA method, ISQA+, that switches to efficient smooth optimization methods after this manifold is identified. We show that for a wide class of degenerate solutions, ISQA+ possesses superlinear convergence not just only in iterations, but also in running time because the cost per iteration is bounded. In particular, our superlinear convergence result holds on problems satisfying a sharpness condition more general than that in existing literature. Experiments on real-world problems also confirm that ISQA+ greatly improves the state of the art for regularized optimization.
description: 21 pages, 1 figure
Manifestation of ageing in the low temperature conductance of disordered insulators
Creators: name: Grenet, Thierry
name: Delahaye, Julien
Publisher: name: arXiv
Year: 2010
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We are interested in the out of equilibrium phenomena observed in the electrical conductance of disordered insulators at low temperature, which may be signatures of the electron coulomb glass state. The present work is devoted to the occurrence of ageing, a benchmark phenomenon for the glassy state. It is the fact that the dynamical properties of a glass depend on its age, i.e. on the time elapsed since it was quench-cooled. We first critically analyse previous studies on disordered insulators and question their interpretation in terms of ageing. We then present new measurements on insulating granular aluminium thin films which demonstrate that the dynamics is indeed age dependent. We also show that the results of different relaxation protocols are related by a superposition principle. The implications of our findings for the mechanism of the conductance slow relaxations are then discussed.
Entrepreneurship Education-Educating for Life-Long Sustainable and Functional Skills. pdf
Creators: name: Aglazor, Genevieve
Publisher: name: figshare
Year: 2022
Subjects: Education

description: The centrality of education to training and development of human resources in any society is indisputable. However, the type of content of education could be debatable. In the context of human resources, the focus is broad knowledge base; unique skills, capacities, and goal-oriented attitudes which when effectively harnessed can transform people, communities, businesses and consequently nations. Entrepreneurship education has the potential to reduce national poverty levels by sustaining individuals and families as well as fostering national development. This paper presents a critical analysis of how education can design, implement, and manage curriculum content geared towards education for life long, sustainable, and functional entrepreneurship skills. It is believed that with the appropriate entrepreneurship education, Nigeria has the potential to join other developing nations on the global economic drive.
A splitting approach for the fully nonlinear and weakly dispersive Green-Naghdi model
Creators: name: Bonneton, Philippe
name: Chazel, Florent
name: Lannes, David
name: Marche, Fabien
name: Tissier, Marion
Publisher: name: arXiv
Year: 2010
Subjects: subject: Numerical Analysis (math.NA)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The fully nonlinear and weakly dispersive Green-Naghdi model for shallow water waves of large amplitude is studied. The original model is first recast under a new formulation more suitable for numerical resolution. An hybrid finite volume and finite difference splitting approach is then proposed. The hyperbolic part of the equations is handled with a high-order finite volume scheme allowing for breaking waves and dry areas. The dispersive part is treated with a classical finite difference approach. Extensive numerical validations are then performed in one horizontal dimension, relying both on analytical solutions and experimental data. The results show that our approach gives a good account of all the processes of wave transformation in coastal areas: shoaling, wave breaking and run-up.
The effect of heat shock protein 90 inhibitors on histone 4 lysine 20 methylation in bladder cancer
Creators: name: Coban, Nuran
name: Varol, Nuray
Publisher: name: IfADo - Leibniz Research Centre for Working Environment and Human Factors, Dortmund
Year: 2019
Subjects: HSP90
histone lysine methylation modifications
DNA methylation
bladder cancer

description: Heat shock protein 90 (HSP90), an ATP-dependent molecular chaperone required for the stability and function of numerous oncogenic signaling, is one of the hallmarks of cancer. Recent years, the studies showed that HSP90 plays a pivotal role in epigenetic pathways. Epigenetic regulation plays an important role in the etiology of bladder cancer. The aim of the present study was to investigate the effect of HSP90 proteins on DNA methylation and the levels of inactivated histone methylation markers in bladder cancers. The cytotoxic effect of geldanamycin (GA), a HSP90-specific inhibitor, in human bladder cancer cell line, T24, was studied by using WST1 (both time and dose-dependent), qPCR for the expression aberration of target genes DNMT1 and WIF-1 and western blot for the protein levels of DNMT1, Histone H4, Histone 4 lysine monomethylation (H4K20me1), Histone 4 lysine trimethylation (H4K20me3), Akt1, pAkt1 (S473) and Lysine methyltransferase 5C (KMT5C). High-dose GA treatment decreased cell proliferation. After the GA treatment, DNMT1 decreased at both transcriptional and translational levels due to Akt1 and pAkt1 (S473) inhibition. Following the GA-induced decrease in DNMT1, re-expression of WIF-1 gene was found at mRNA. In addition, the GA treatment resulted in dose- and time-dependent upregulation/downregulation of histone post-translational modifications (H4K20me1 and H4K20me3) and the KMT5C enzyme responsible for these modifications. There was no significant change in the H4 protein level. These findings may offer a new approach for the determination of the molecular effect of HSP90 on epigenetic regulation and the identification of new molecular targets (HSP90 client proteins) for bladder cancer treatment.
description: EXCLI Journal; 18:Doc195; ISSN 1611-2156
A new characterization of silting subcategories in the stable category of a Frobenius extriangulated category
Creators: name: Ma, Yajun
name: Ding, Nanqing
name: Zhang, Yafeng
name: Hu, Jiangsheng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Rings and Algebras (math.RA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We give a new characterization of silting subcategories in the stable category of a Frobenius extriangulated category, generalizing the result of Di et al. (J. Algebra 525 (2019) 42-63) about the Auslander-Reiten type correspondence for silting subcategories over triangulated categories. More specifically, for any Frobenius extriangulated category $\mathcal{C}$, we establish a bijective correspondence between silting subcategories of the stable category $\underline{\mathcal{C}}$ and certain covariantly finite subcategories of $\mathcal{C}$. As a consequence, a characterization of silting subcategories in the stable category of a Frobenius exact category is given. This result is applied to homotopy categories over abelian categories with enough projectives, derived categories over Grothendieck categories with enough projectives as well as to the stable category of Gorenstein projective modules over a ring $R$.
description: 21 pages, all comments are welcome
Conformal Killing symmetric tensors on Lie groups
Creators: name: del Barco, Viviana
name: Moroianu, Andrei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 53D25, 22E25, 53C30, 22E15

description: We introduce the notion of metric Lie algebras of Killing type, which are characterized by the fact that all conformal Killing symmetric tensors are sums of Killing tensors and multiples of the metric tensor. We show that if a Lie algebra is either 2-step nilpotent, or 2- or 3-dimensional, or 4-dimensional non-solvable, or 4-dimensional solvable with 1-dimensional derived ideal, or has an abelian factor, then it is of Killing type with respect to any positive definite metric.
description: 23 pages
Appunti per un'ermeneutica dei media
Creators: name: Fossati Levi, Tiziano
Publisher: name: Trópos
Year: 2024

description: This article aims to study the contribution offered by the media in the process of understanding the being and therefore the effects they have on reality and experience. Within the comparison between two Italian philosophers, Gianni Vattimo and Maurizio Ferraris, the article lays the foundations for reflection on the ontological status of the media and secondly on the ways digital and mediality reconfigure the relationship that man has with the truth. Media hermeneutics would therefore constitute both the field of study and the theoretical tool for analyzing this relationship, because it is the only perspective which, given the question about the foundations (reality and truth) in a post-metaphysical context, it questions at the same time also on the legitimacy of its own philosophical action, that is, on the set of those discursive practices, oral and written, that it itself articulates.
description: Trópos, V. 16 N. 1 (2024): Ermes e Prometeo: sul rapporto possibile tra ermeneutica e filosofia della tecnica
Revocable Anonymity
Creators: name: Köpsell, Stefan
name: Wendolsky, Rolf
name: Federrath, Hannes
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: Anonymous and unobservable communication systems, Privacy enhancing technologies
subject: 330 Wirtschaft

description: Anonymity services in the EU may be forced by the new EU data retention directive to collect connection data and deanonymise some of their users in case of serious crimes. For this purpose, we propose a new privacy-friendly solution for incorporating revocation in an anonymous communication system. In contrast to other known methods, our scheme does not reveal the identity of a user to any other entity involved in the revocation procedure but the law enforcement agency. Another advantage is, that no user will need to provide more identifying information than his connection (IP) address, that is what he needs to communicate with the system anyway. The proposed scheme is based mainly on threshold group signatures and threshold atomic proxy re-encryption.
A quantitative study of cochlear afferent axons in birds
Creators: name: Köppl, Christine
name: Wegscheider, Andrea
name: Gleich, Otto
name: Manley, Geoffrey A.
Publisher: name: Universität Regensburg
Year: 2000
Subjects: subject: Auditory; Basilar papilla; Eighth nerve; Barn owl; Chicken; Myelination
subject: 590 Tiere (Zoologie)
subject: 610 Medizin

description: This paper is a comparative study of auditory-nerve morphology in birds. The chicken (Gallus gallus), the emu (Dromaius novaehollandiae) and the starling (Sturnus vulgaris) were chosen as unspecialised birds that have already been used in auditory research. The data are discussed in comparison to a similar earlier study on the barn owl, a bird with highly specialised hearing, in an attempt to separate general avian patterns from species specialisations. Average numbers of afferent fibres from 8775 (starling) to 12 406 (chicken) were counted, excluding fibres to the lagenar macula. The number of fibres representing different frequency ranges showed broad maxima in the chicken and emu, corresponding to hearing ranges of best sensitivity and/or particular behavioural relevance. Mean axon diameters were around 2 μm in the chicken and starling, and around 3 μm in the emu. Virtually all auditory afferents were myelinated. The mean thickness of the myelin sheaths was between 0.33 μm (starling) and 0.4 μm (emu). There was a consistent pattern in the diameters of axons deriving from different regions. Axons from very basal, i.e. highest-frequency, parts of the basilar papilla were always the smallest. In the emu and the chicken, axons from the middle papillar regions were, in addition, larger than axons innervating apical regions.
Seats at the table: the network of the editorial boards in information and library science
Creators: name: Barabesi, Alberto Baccini And Lucio
Publisher: name: arXiv
Year: 2011
Subjects: subject: Digital Libraries (cs.DL)
subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The structural properties of the network generated by the editorial activities of the members of the boards of "Information Science & Library Science" journals are explored through network analysis techniques. The crossed presence of scholars on editorial boards, the phenomenon called interlocking editorship, is considered a proxy of the similarity of editorial policies. The evidences support the idea that this group of journals is better described as a set of only relatively connected subfields. In particular two main subfield are identified, consisting of research oriented journals devoted respectively to LIS and MIS. The links between these two subsets are weak. Around these two subsets there are a lot of (relatively) isolated professional journals or journals characterized more by their subject-matter content than by their focus on information flows. It is possible to suggest that this configuration of the network may be the consequence of the youthfulness of Information Science & Library Science, which has not permitted yet to reach a general consensus through scholars on research aims, methods and instruments.
description: 12 pages, 3 figures, 3 tables Accepted for publication. Journal of Informetrics
The postnatal growth of cochlear nucleus subdivisions and neuronal somata of the anteroventral cochlear nucleus in the Mongolian gerbil (Meriones unguiculatus)
Creators: name: Gleich, Otto
name: Kadow, Celia
name: Strutz, Jürgen
Publisher: name: Universität Regensburg
Year: 1998
Subjects: subject: Development; Maturation; Cochlear nucleus morphology; Somal growth
subject: 590 Tiere (Zoologie)
subject: 610 Medizin

description: We have analysed the postnatal volume increase of the cochlear nucleus subdivisions from birth to senescence in the Mongolian gerbil. All subdivisions showed the most prominent growth in the 2nd week of life before the onset of hearing on day 12. After the onset of hearing, the dorsal and the postero-ventral portion of the cochlear nucleus showed only a moderate degree of further growth. The antero-ventral cochlear nucleus, however, almost doubled in volume after the onset of hearing, reaching a maximum in 4-month-old animals. In ageing gerbils, we observed a small but systematic reduction of the cochlear nucleus volume. To further assess which elements contribute to the growth of the antero-ventral cochlear nucleus after the onset of hearing, we analysed the somal size of the neurones. Before the onset of hearing, somal and volume growth were highly correlated. However, somata had reached an adult size by the onset of hearing. We conclude that the growth of the antero-ventral cochlear nucleus after the onset of hearing is due to changes in the neuropil.
Evaluating the desalination performance and efficiency of capacitive deionization with activated carbon electrodes
Creators: name: Chung, Ting-Chih
Publisher: name: University of British Columbia
Year: 2018

description: Capacitive deionization (CDI) is an incipient desalination technology based on the principle of electrical double layer capacitors. When a constant voltage is applied to high surface area and electrically conductive electrodes, electrodes become oppositely charged and ions are adsorbed onto the electrode surfaces under the presence of the electric field, thereby producing a purified stream of water. When the electrodes are saturated with ions, the applied voltage is removed or the polarity is reversed to desorb the ions and generate a stream of waste concentrate. For brackish water with intermediate salinities, CDI technology has advantages over conventional desalination technologies because of operation at ambient temperatures and pressures, high water recovery, and no chemical usage. However, there are issues with translating CDI technology from laboratory to practice because of the lack of experience with its operation and uncertainties about its robustness and durability. To address these challenges, this thesis investigated a laboratory-scale CDI cell with the aim to holistically evaluate its desalination performance and efficiency using desalination metrics, kinetic models, and circuit models. The activated carbon electrodes used in the CDI cell were purchased commercially as well as fabricated in-house, and were analyzed with cyclic voltammetry, scanning electron microscopy and energy-dispersive X-ray spectroscopy. Operating parameters including applied voltage, NaCl concentration, and flow rate were varied to study their effects. Lastly, the effect of including ion-exchange membranes was examined and preliminary tests were performed to explore the long-term desalination performance and efficiency of CDI technology. Commercial electrodes were found to be superior to the in-house fabricated electrodes. For operating parameters, higher applied voltages were found to increase the salt adsorption and capacitance but decrease the energy efficiency. Increasing NaCl concentration also increased salt adsorption but did not affect capacitance or energy efficiency. No trends were observed for flow rate and kinetic parameters. Ion-exchange membranes boosted the electrode performance considerably, with salt adsorption improving by 1.70 – 1.94 times and energy efficiency by 1.11 – 1.35 times. Long-term tests showed that electrode performance degraded steadily and reached half its original performance at 40 cycles but could be regenerated with NaOH washing.