cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Berberine ameliorates obesity by inducing GDF15 secretion by brown adipocytes
Creators: name: chang, li
name: Leng, Qingyang
name: Li, LiHua
name: Hu（inactive）, Fan
name: Xu, Yuejie
name: Gong（inactive）, Sa
name: Yang（inactive）, Ying
name: Zhang（inactive）, Hongli
name: Li（inactive）, Xiaohua
Publisher: name: figshare
Year: 2022
Subjects: Cell metabolism

description: Berberine (BBR), which is a compound derived from the Chinese medicinal plant Coptis chinensis, promotes weight loss, but the molecular mechanisms are not well understood. Here, we show that BBR increases the serum level of growth differentiation factor 15 (GDF15), which is a stress response cytokine that can reduce food intake and lower body weight, in diet-induced obese (DIO) mice. The body weight and food intake of DIO mice were decreased after BBR treatment, and the weight change was negatively correlated with the serum GDF15 level. Further studies show that BBR induced GDF15 mRNA expression and secretion in the brown adipose tissue (BAT) of DIO mice and primary mouse brown adipocytes. In addition, we found that BBR upregulates GDF15 mRNA expression and secretion by activating the integrated stress response (ISR) in primary mouse brown adipocytes. Overall, our findings show that BBR lowers body weight by inducing GDF15 secretion via the activation of the ISR in BAT.
PLACES - Conceptualizing Community Engagement and Generative Transformation
Creators: name: Vargiu, Andrea
name: Fongia, Stefania
Publisher: name: Zenodo
Year: 2024
Subjects: subject: Sociology
subject: FOS: Sociology

description: These slides present the initial theoretical frameworking of the PLACES project. They were presented to the projects' Advisory Board on April 19th 2024.
Magnon-Cooparons in magnet-superconductor hybrids
Creators: name: Bobkova, I. V.
name: Bobkov, A. M.
name: Kamra, Akashdeep
name: Belzig, Wolfgang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Generation and detection of spinful Cooper pairs in conventional superconductors has been intensely pursued by designing increasingly complex magnet-superconductor hybrids. Here, we demonstrate theoretically that magnons with nonzero wavenumbers universally induce a cloud of spinful triplet Cooper pairs around them in an adjacent conventional superconductor. The resulting composite quasiparticle, termed magnon-cooparon, consists of a spin flip in the magnet screened by a cloud of the spinful superfluid condensate. Thus, it inherits a large effective mass, which can be measured experimentally. Furthermore, we demonstrate that two magnetic wires deposited on a superconductor serve as a controllable magnonic directional coupler mediated by the nonlocal and composite nature of magnon-cooparons. Our analysis predicts a quasiparticle that enables generation, control, and use of spinful triplet Cooper pairs in the simplest magnet-superconductor heterostructures.
Ángel Loureiro. El mundo ciego
Creators: name: Sevilla Vallejo, Santiago
Publisher: name: Fondazione Università Ca’ Foscari Venezia, Italia
Year: 2020

description:
Review of Loureiro, Á. (2019). El mundo ciego. Málaga: Editorial Pálido Fuego, pp. 210.

description: Rassegna iberistica
A Dual Field-of-View Zoom Metalens
Creators: name: Zheng, Guoxing
name: Wu, Weibiao
name: Li, Zile
name: Zhang, Shuang
name: Mehmood, Muhammad Qasim
name: He, Pingan
name: Li, Song
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Conventional optical zoom system is bulky, expensive and complicated for real time adjustment. Recent progress in the metasurface research has provided a new solution to achieve innovative compact optical systems. In this paper, we propose a highly integrated zoom lens with dual field-of-view (FOV) based on double sided metasurfaces. With silicon nanobrick arrays of spatially varying orientations sitting on both side of a transparent substrate, this ultrathin zoom metalens can be designed to focus an incident circular polarized beam with spin-dependent FOVs without varying the focal plane, which is important for practical applications. The proposed dual FOV zoom metalens, with the advantages such as ultracompactness, flexibility and replicability, can find applications in fields which require ultracompact zoom imaging and beam focusing.
description: 12 pages, 6 figures
Luis Landero. Lluvia fina
Creators: name: Guarino, Augusto
Publisher: name: Fondazione Università Ca’ Foscari Venezia, Italia
Year: 2020

description:
Review of Landero, L. (2019). Lluvia fina. Barcelona: Tusquets, pp. 272.

description: Rassegna iberistica
The transformative mission of universities: Personal trajectories and institutional drivers of community engaged scholarship
Creators: name: Vargiu, Andrea
name: Reale, Emanuela
name: Spinello, Andrea Orazio
name: Ghibellini, Valentina
Publisher: name: Zenodo
Year: 2024
Subjects: Community Engagement
Higher Education
Public Engagement
Transformative University

description: This is a presentation at the Conference "Education and/for Social Justice".

Third International Conference of the journal "Scuola Democratica". June 3-4-5-6, 2024 · University of Cagliari (Italy)
Pointers for Quantum Measurement Theory
Creators: name: Lawrence, Jay
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In the iconic measurements of atomic spin-1/2 or photon polarization, one employs two spatially separated and noninteracting detectors. Each detector is binary, registering the presence or absence of the atom or the photon. For measurements on a $d$-state particle we recast the standard von Neumann measurement formalism by replacing the familiar pointer variable with an array of such detectors, one for each of the $d$ possible outcomes. We show that the unitary dynamics of the premeasurement process restricts the detector outputs to the subspace of single outcomes, so that the pointer emerges from the apparatus. We propose a physical extension of this apparatus which replaces each detector with an ancilla qubit coupled to a readout device. This explicitly separates the pointer into distinct quantum and (effectively) classical parts, and delays the quantum to classical transition. As a result, one not only recovers the collapse scenario of an ordinary apparatus, but one can also observe a superposition of the quantum pointer states.
description: 19 pages, 3 pdf figures
Confidence limits when using historical floods in flood frequency analysis
Creators: name: Wen, Phillip Wen.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Observation of discrete time-crystalline order in a disordered dipolar many-body system
Creators: name: Choi, Soonwon
name: Choi, Joonhee
name: Landig, Renate
name: Kucsko, Georg
name: Zhou, Hengyun
name: Isoya, Junichi
name: Jelezko, Fedor
name: Onoda, Shinobu
name: Sumiya, Hitoshi
name: Khemani, Vedika
name: von Keyserlingk, Curt
name: Yao, Norman Y.
name: Demler, Eugene
name: Lukin, Mikhail D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Understanding quantum dynamics away from equilibrium is an outstanding challenge in the modern physical sciences. It is well known that out-of-equilibrium systems can display a rich array of phenomena, ranging from self-organized synchronization to dynamical phase transitions. More recently, advances in the controlled manipulation of isolated many-body systems have enabled detailed studies of non-equilibrium phases in strongly interacting quantum matter. As a particularly striking example, the interplay of periodic driving, disorder, and strong interactions has recently been predicted to result in exotic "time-crystalline" phases, which spontaneously break the discrete time-translation symmetry of the underlying drive. Here, we report the experimental observation of such discrete time-crystalline order in a driven, disordered ensemble of $\sim 10^6$ dipolar spin impurities in diamond at room-temperature. We observe long-lived temporal correlations at integer multiples of the fundamental driving period, experimentally identify the phase boundary and find that the temporal order is protected by strong interactions; this order is remarkably stable against perturbations, even in the presence of slow thermalization. Our work opens the door to exploring dynamical phases of matter and controlling interacting, disordered many-body systems.
description: 6 + 3 pages, 4 figures
Cooperazione mediterranea e comunità locali: il ruolo trasformativo delle università
Creators: name: Vargiu, Andrea
Publisher: name: Zenodo
Year: 2025
Subjects: subject: Commmunity engagement
subject: Higher education
subject: Higher Education

description: This was presented during the XL ISPROM Seminar on Mediterranean Cooperation.

The presentation brings together the theoretical framework provided by the PLACES project and the possible ambit for its deployement within the EUNICoast project. 

PLACES (Portraits and Landscapes of Academic Community Engaged Scholarship) is a research project on Academic Community Engagement funded by the Italian Ministry of University and Research under the PRIN funding programme (National Research Interest Projects). It is aimed at understanding the structural, institutional and personal enablers and inhibiters of Academic Community Engagement

EUNICoast is a European University Alliance funded by the EC under the Erasmus+ Strategic Programmes fund. It is an alliance of 13 universities aimed at setting up a European University of islands, ports and coastal territories. The University of Sassari (IT) is the coordinator of the Community Engagement Work Package.
Luciana Del Gizzo y Facundo Ruiz. Antología temática de la poesía argentina
Creators: name: Di Benedetto, Matias
Publisher: name: Fondazione Università Ca’ Foscari Venezia, Italia
Year: 2020

description:
Reseña de Del Gizzo, L.; Ruiz, F. (2017). Antología temática de la poesía argentina. Buenos Aires: EUFyL, pp. 427.

description: Rassegna iberistica
Crushing riluzole tablets: evaluation of loss of powder and active principle in a home-simulation experiment
Creators: name: Casiraghi, Antonella
name: Gentile, Andrea
name: Marjanovic, Ivan
name: Chiò, Adriano
Publisher: name: Taylor & Francis
Year: 2023
Subjects: Biochemistry
Neuroscience
Mathematical Sciences not elsewhere classified

description: Objective: Swallowing difficulties cause patients with amyotrophic lateral sclerosis (ALS) to crush oral medications, falling outside the labeling instructions and entailing some risks. To date, there is no evidence about consequences of crushing riluzole tablets in a home setting. This simulation experiment evaluated the loss of powder and active principle ingredient (API) mimicking the home setting with two alternative crushing methods (A and B). Methods: The tests were carried out by 15 volunteers without experience in the preparation of medication. Each volunteer manually crushed 5 tablets with a meat tenderizer (method A) or two spoons pressed against each other (method B). Riluzole was weighed before (W1) and after crushing (W2). Then, a subsample of crushed tablets was analyzed by HPLC to measure API content. The loss of powder was calculated as a percentage of the intact tablet weight, and the loss of API as a percentage of the labeled API content. Results: The quantitative analysis showed a mean percentage loss of 6.27% corresponding to a mean (SD) loss of powder of 13(±13) mg. The API loss was directly related to the powder loss: overall the mean percentage of API loss was 8.53% (corresponding to a mean API loss of 4.27 ± 4.50 mg). The difference in powder and API loss was highly statistically significant. Conclusion: Crushing riluzole tablets in a simulated home setting determined a significant loss of powder and API. These results support neurologists to evaluate formulations that minimize the need to alter the product and can improve ALS patient journey.
A Hybrid Framework for Sequential Data Prediction with End-to-End Optimization
Creators: name: Aydın, Mustafa E.
name: Kozat, Suleyman S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We investigate nonlinear prediction in an online setting and introduce a hybrid model that effectively mitigates, via an end-to-end architecture, the need for hand-designed features and manual model selection issues of conventional nonlinear prediction/regression methods. In particular, we use recursive structures to extract features from sequential signals, while preserving the state information, i.e., the history, and boosted decision trees to produce the final output. The connection is in an end-to-end fashion and we jointly optimize the whole architecture using stochastic gradient descent, for which we also provide the backward pass update equations. In particular, we employ a recurrent neural network (LSTM) for adaptive feature extraction from sequential data and a gradient boosting machinery (soft GBDT) for effective supervised regression. Our framework is generic so that one can use other deep learning architectures for feature extraction (such as RNNs and GRUs) and machine learning algorithms for decision making as long as they are differentiable. We demonstrate the learning behavior of our algorithm on synthetic data and the significant performance improvements over the conventional methods over various real life datasets. Furthermore, we openly share the source code of the proposed method to facilitate further research.
Andrea Pezzé. Delirios panópticos y resistencia. Literatura policial y testimonio en América Central
Creators: name: Oggioni, Mariana
Publisher: name: Fondazione Università Ca’ Foscari Venezia, Italia
Year: 2020

description:
Review of Pezzé, A. (2018). Delirios panópticos y resistencia. Literatura policial y testimonio en América Central. Guatemala: SOPHOS, pp. 303.

description: Rassegna iberistica
Nelly Richard. Abismos temporales. Feminismo, estéticas travestis y teoría queer
Creators: name: Regazzoni, Susanna
Publisher: name: Fondazione Università Ca’ Foscari Venezia, Italia
Year: 2020

description:
Review of Richard, N. (2018). Abismos temporales. Feminismo, estéticas travestis y teoría queer. Guatemala: SOPHOS, pp. 303.

description: Rassegna iberistica
Elastic Spin Hall effect in Mechanical Graphene
Creators: name: Wang, Yao-Ting
name: Zhang, Shuang
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We show that spin-orbit interaction and elastic spin-Hall effect can exist in a classical mechanical system consisting of a two-dimensional honeycomb lattice of masses and springs. The band structure shows the presence of splitting at K point induced by the difference of longitudinal and transverse elastic constant, and this splitting can be regarded as an effective Dresselhaus-type spin-orbit coupling. Interestingly, as an initial displacement away from the equilibrium is applied, the time evolution simulation shows that waves of different spin polarization propagates along different directions at the Gamma and K point, which is characteristic of spin-Hall effect. Several cases for spin-Hall effect are also discussed.
description: 15 pages, 5 figures, and 3395 words
Jimena Néspolo. Las cuatros patas del amor
Creators: name: Mancini, Adriana
Publisher: name: Fondazione Università Ca’ Foscari Venezia, Italia
Year: 2020

description:
Review of Richard, N. (2018). Abismos temporales. Feminismo, estéticas travestis y teoría queer. Guatemala: SOPHOS, pp. 303.

description: Rassegna iberistica
Im Namen der Schweizerischen Nordbahngesellschaft, Melchior Esslinger, an Joseph Wolfgang von Deschwanden (1819-1866)
Creators: name: Schweizerische Nordbahngesellschaft
Publisher: name: [s.n.]
Year: 1847

description: Brief aus Zürich.
Dank und Gratifikation für die Vornahme der Kesselprobe der Lokomotiven "Aare" und "Limmat" an J. W. Deschwanden und Alb. Mousson
The behaviour of steel frames at elevated temperatures
Creators: name: Crozier, Damian Andrew.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Causality, Causal Discovery, and Causal Inference in Structural Engineering
Creators: name: Naser, M. Z.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Much of our experiments are designed to uncover the cause(s) and effect(s) behind a data generating mechanism (i.e., phenomenon) we happen to be interested in. Uncovering such relationships allows us to identify the true working of a phenomenon and, most importantly, articulate a model that may enable us to further explore the phenomenon on hand and/or allow us to predict it accurately. Fundamentally, such models are likely to be derived via a causal approach (as opposed to an observational or empirical mean). In this approach, causal discovery is required to create a causal model, which can then be applied to infer the influence of interventions, and answer any hypothetical questions (i.e., in the form of What ifs? Etc.) that we might have. This paper builds a case for causal discovery and causal inference and contrasts that against traditional machine learning approaches; all from a civil and structural engineering perspective. More specifically, this paper outlines the key principles of causality and the most commonly used algorithms and packages for causal discovery and causal inference. Finally, this paper also presents a series of examples and case studies of how causal concepts can be adopted for our domain.
Davide Barilli. Cuba. Altravana, nel cuore di una città perduta
Creators: name: Valentini, Francesca
Publisher: name: Fondazione Università Ca’ Foscari Venezia, Italia
Year: 2020

description:
Review of Barilli, D. (2019). Cuba. Altravana, nel cuore di una città perduta. Roma: Giulio Perrone Editore, pp. 222.

description: Rassegna iberistica
María Hortensia Troanes. El límite y la gracia
Creators: name: Serafin, Silvana
Publisher: name: Fondazione Università Ca’ Foscari Venezia, Italia
Year: 2020

description:
Review of Troanes, M.H. (2019). El límite y la gracia. Buenos Aires: Vinciguerra, pp. 130.

description: Rassegna iberistica
Marco Neves. José Cardoso Pires e o leitor desassossegado
Creators: name: Lucotti, Eugenio
Publisher: name: Fondazione Università Ca’ Foscari Venezia, Italia
Year: 2020

description:
Review of Neves, M. (2018). José Cardoso Pires e o leitor desassossegado. Lisboa: Guerra e Paz, pp. 175.

description: Rassegna iberistica
Evidence for strong evolution in galaxy environmental quenching efficiency between z = 1.6 and z = 0.9
Creators: name: Nantais, Julie B.
name: Muzzin, Adam
name: van der Burg, Remco F. J.
name: Wilson, Gillian
name: Lidman, Chris
name: Foltz, Ryan
name: DeGroot, Andrew
name: Noble, Allison
name: Cooper, Michael C.
name: Demarco, Ricardo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We analyse the evolution of environmental quenching efficiency, the fraction of quenched cluster galaxies that would be star-forming if they were in the field, as a function of redshift in 14 spectroscopically confirmed galaxy clusters with 0.87 < z < 1.63 from the Spitzer Adaptation of the Red-Sequence Cluster Survey (SpARCS). The clusters are the richest in the survey at each redshift. Passive fractions rise from $42_{-13}^{+10}$\% at z ~ 1.6 to $80_{-9}^{+12}$\% at z ~ 1.3 and $88_{-3}^{+4}$\% at z < 1.1, outpacing the change in passive fraction in the field. Environmental quenching efficiency rises dramatically from $16_{-19}^{+15}$ at z ~ 1.6 to $62_{-15}^{+21}\% at z ~ 1.3 and $73_{-7}^{+8}$\% at z $\lesssim$ 1.1. This work is the first to show direct observational evidence for a rapid increase in the strength of environmental quenching in galaxy clusters at z ~ 1.5, where simulations show cluster-mass halos undergo non-linear collapse and virialisation.
description: 5 pages, 2 figures, accepted for MNRAS Letters
Transport mechanism through metal-cobaltite interfaces
Creators: name: Acha, C.
name: Schulman, A.
name: Boudard, M.
name: Daoudi, K.
name: Tsuchiya, T.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The resistive switching (RS) properties as a function of temperature were studied for Ag/La$_{1-x}$Sr$_x$CoO$_3$ (LSCO) interfaces. The LSCO is a fully-relaxed 100 nm film grown by metal organic deposition on a LaAlO$_3$ substrate. Both low and a high resistance states were set at room temperature and the temperature dependence of their current-voltage (IV) characteristics was mea- sured taking care to avoid a significant change of the resistance state. The obtained non-trivial IV curves of each state were well reproduced by a circuit model which includes a Poole-Frenkel element and two ohmic resistances. A microscopic description of the changes produced by the RS is given, which enables to envision a picture of the interface as an area where conductive and insulating phases are mixed, producing Maxwell-Wagner contributions to the dielectric properties.
description: 13 pages, 5 figures, to be published in APL. Corresponding author: C. Acha (acha@df.uba.ar)
Glimpses of stellar surfaces. II. Origins of the photometric modulations and timing variations of KOI-1452
Creators: name: Ioannidis, P.
name: Schmitt, J. H. M. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The deviations of the mid-transit times of an exoplanet from a linear ephemeris are usually the result of gravitational interactions with other bodies in the system. However, these types of transit timing variations (TTV) can also be introduced by the influences of star spots on the shape of the transit profile. Here we use the method of unsharp masking to investigate the photometric light curves of planets with ambiguous TTV to compare the features in their O - C diagram with the occurrence and in-transit positions of spot-crossing events. This method seems to be particularly useful for the examination of transit light curves with only small numbers of in-transit data points, i.e., the long cadence light curves from Kepler satellite. As a proof of concept we apply this method to the light curve and the estimated eclipse timing variations of the eclipsing binary KOI-1452, for which we prove their non-gravitational nature. Furthermore, we use the method to study the rotation properties of the primary star of the system KOI-1452 and show that the spots responsible for the timing variations rotate with different periods than the most prominent periods of the system's light curve. We argue that the main contribution in the measured photometric variability of KOI-1452 originates in g-mode oscillations, which makes the primary star of the system a γ-Dor type variable candidate.
description: 7 pages, 8 figures
Jon Kortazar (ed.). Bridge / Zubia : Imágenes de la relación cultural entre el País Vasco y Estados Unidos
Creators: name: Verbeke, Frederik
Publisher: name: Fondazione Università Ca’ Foscari Venezia, Italia
Year: 2020

description:
Review of Kortazar, J. (ed.) (2019). Bridge / Zubia: Imágenes de la relación cultural entre el País Vasco y Estados Unidos. Madrid; Frankfurt: Iberoamericana; Vervuert, pp. 410.

description: Rassegna iberistica
Analytic results for planar three-loop integrals for massive form factors
Creators: name: Henn, Johannes M.
name: Smirnov, Alexander V.
name: Smirnov, Vladimir A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We use the method of differential equations to analytically evaluate all planar three-loop Feynman integrals relevant for form factor calculations involving massive particles. Our results for ninety master integrals at general $q^2$ are expressed in terms of multiple polylogarithms, and results for fiftyone master integrals at the threshold $q^2=4m^2$ are expressed in terms of multiple polylogarithms of argument one, with indices equal to zero or to a sixth root of unity.
Continuity and Additivity Properties of Information Decompositions
Creators: name: Rauh, Johannes
name: Banerjee, Pradeep Kr.
name: Olbrich, Eckehard
name: Montúfar, Guido
name: Jost, Jürgen
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences
subject: 94A15, 94A17

description: Information decompositions quantify how the Shannon information about a given random variable is distributed among several other random variables. Various requirements have been proposed that such a decomposition should satisfy, leading to different candidate solutions. Curiously, however, only two of the original requirements that determined the Shannon information have been considered, namely monotonicity and normalization. Two other important properties, continuity and additivity, have not been considered. In this contribution, we focus on the mutual information of two finite variables $Y,Z$ about a third finite variable $S$ and check which of the decompositions satisfy these two properties. While most of them satisfy continuity, only one of them is both continuous and additive.
description: 17 pages
Out-of-distribution generalization for learning quantum dynamics
Creators: name: Caro, Matthias C.
name: Huang, Hsin-Yuan
name: Ezzell, Nicholas
name: Gibbs, Joe
name: Sornborger, Andrew T.
name: Cincio, Lukasz
name: Coles, Patrick J.
name: Holmes, Zoë
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Generalization bounds are a critical tool to assess the training data requirements of Quantum Machine Learning (QML). Recent work has established guarantees for in-distribution generalization of quantum neural networks (QNNs), where training and testing data are drawn from the same data distribution. However, there are currently no results on out-of-distribution generalization in QML, where we require a trained model to perform well even on data drawn from a different distribution to the training distribution. Here, we prove out-of-distribution generalization for the task of learning an unknown unitary. In particular, we show that one can learn the action of a unitary on entangled states having trained only product states. Since product states can be prepared using only single-qubit gates, this advances the prospects of learning quantum dynamics on near term quantum hardware, and further opens up new methods for both the classical and quantum compilation of quantum circuits.
description: 8 pages (main body) + 18 pages (references and appendix); 4+2 figures; V3 includes additional explanations and numerical experiments in the appendix
Chemical Evolution with Radial Mixing Redux: Extending beyond the Solar Neighborhood
Creators: name: Chen, Boquan
name: Hayden, Michael R.
name: Sharma, Sanjib
name: Bland-Hawthorn, Joss
name: Kobayashi, Chiaki
name: Karakas, Amanda I.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a multi-zone galactic chemical evolution (GCE) model for the Milky Way that takes the most recently updated yields of major nucleosynthesis channels into account. It incorporates physical processes commonly found in previous GCE models like supernova and star formation feedback, the radial flow of gas in the disk, and the infall of fresh gas, along with stellar scattering processes like radial migration. We individually analyse the effect of different physical processes present in our model on the observed properties of the Galaxy. The radial flow of gas in the disk plays an important role in establishing the radial gradient for \feh{} in the low-\alphafe{} sequence. Our model with one episode of smooth gas infall and constant star formation efficiency is capable of reproducing the observed \fehalpha{} distribution of stars at different ($R$, $|z|$) positions in the Milky Way. Our results point to the rapid evolution of \alphafe{} after the onset of Type Ia supernovae and a high star formation rate during the formation of the high-\alphafe{} sequence as the origin of dual peaks in \alphafe{}. A secondary infall is unnecessary to reproduce the \alphafe{}-gap and chemical spread in the disk in our model. We additionally compare the median age for various mono-abundance populations and the age-metallicity relation at different ($R$, $|z|$) positions from our fiducial model to observations. We discuss our results in relation to other related work in detail.
description: 27 pages, 15 figures, submitted to MNRAS
Gravitational ringing and superradiant instabilities of the Kerr-like black holes in a dark matter halo
Creators: name: Liu, Dong
name: Yang, Yi
name: Övgün, Ali
name: Long, Zheng-Wen
name: Xu, Zhaoyi
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Supermassive black holes from the center of galaxy may be immersed in a dark matter halo. This dark matter halo may form a "cusp" structure around the black hole and disappear at a certain distance from the black hole. Based on this interesting physical background, we use the continued fraction method to study gravitational ringring of the Kerr-like black holes immersed in a dark matter halo, i.e., quasinormal modes (QNM) and quasibound states (QBS). We consider these gravitational ringring of black holes both in cold dark matter (CDM) model and scalar field dark matter (SFDM) model at the LSB galaxy, and compare them with Kerr black hole. By testing the states of QNM/QBS frequencies with different parameters $l,m,a$, we confirm the existence of the superradiant instabilities when the black holes both in CDM model and SFDM model. Besides, we also study the impacts of dark matter parameters on the QNM/QBS of black holes at the specific circumstances. In the future, these results may be used for gravitational wave detection of supermassive black holes, and may provide an effective method for detecting the existence of dark matter.
Christian Ringwald-Boelger (1815-1878) an Joseph Wolfgang von Deschwanden (1819-1866)
Creators: name: Ringwald-Boelger, Christian
Publisher: name: [s.n.]
Year: 1865

description: Brief aus Basel, betreffend dem von Deschwanden geäusserten  "Wunsch. ..." werde Ihr Bild einem Photographen hier abliefern"
Lepton-Flavor Violating Mediators
Creators: name: Galon, Iftah
name: Kwa, Anna
name: Tanedo, Philip
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a framework where dark matter interacts with the Standard Model through a light, spin-0 mediator that couples chirally to pairs of different-flavor leptons. This flavor violating final state weakens bounds on new physics coupled to leptons from terrestrial experiments and cosmic-ray measurements. As an example, we apply this framework to construct a model for the Fermi-LAT excess of GeV $γ$-rays from the galactic center. We comment on the viability of this portal for self-interacting dark matter explanations of small scale structure anomalies and embeddings in flavor models. Models of this type are shown to be compatible with the muon anomalous magnetic moment anomaly. We review current experimental constraints and identify possible future theoretical and experimental directions.
description: 27 pages, 7 figures, 1 table
Deep fiber clustering: Anatomically informed fiber clustering with self-supervised deep learning for fast and effective tractography parcellation
Creators: name: Chen, Yuqian
name: Zhang, Chaoyi
name: Xue, Tengfei
name: Song, Yang
name: Makris, Nikos
name: Rathi, Yogesh
name: Cai, Weidong
name: Zhang, Fan
name: O'Donnell, Lauren J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: White matter fiber clustering is an important strategy for white matter parcellation, which enables quantitative analysis of brain connections in health and disease. In combination with expert neuroanatomical labeling, data-driven white matter fiber clustering is a powerful tool for creating atlases that can model white matter anatomy across individuals. While widely used fiber clustering approaches have shown good performance using classical unsupervised machine learning techniques, recent advances in deep learning reveal a promising direction toward fast and effective fiber clustering. In this work, we propose a novel deep learning framework for white matter fiber clustering, Deep Fiber Clustering (DFC), which solves the unsupervised clustering problem as a self-supervised learning task with a domain-specific pretext task to predict pairwise fiber distances. This process learns a high-dimensional embedding feature representation for each fiber, regardless of the order of fiber points reconstructed during tractography. We design a novel network architecture that represents input fibers as point clouds and allows the incorporation of additional sources of input information from gray matter parcellation to improve anatomical coherence of clusters. In addition, DFC conducts outlier removal naturally by rejecting fibers with low cluster assignment probability. We evaluate DFC on three independently acquired cohorts, including data from 220 individuals across genders, ages (young and elderly adults), and different health conditions (healthy control and multiple neuropsychiatric disorders). We compare DFC to several state-of-the-art white matter fiber clustering algorithms. Experimental results demonstrate superior performance of DFC in terms of cluster compactness, generalization ability, anatomical coherence, and computational efficiency.
description: 14 pages, 7 figures
Corrosion of mild steel in strong caustic solutions at elevated temperatures
Creators: name: Cook, Scott.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Im Namen der Schweizerischen Naturforschenden Gesellschaft, Redaktionskommission des Publikationsorgans "Mitteilungen", an Joseph Wolfgang von Deschwanden (1819-1866)
Creators: name: Schweizerische Naturforschende Gesellschaft
Publisher: name: [s.n.]
Year: 1852

description: Brief aus Zürich, mit der Bitte um Einreichung des Beitrags an Albert Mousson, Präsident der Redaktionskommission der "Mitteilungen"
title: Expecting the Unexpected
title: A new Uncertainty Perception Indicator (UPI) – concept and first results
titleType: AlternativeTitle
Creators: name: Müller, Henrik
name: Hornig, Nico
Publisher: name: Technische Universität Dortmund
Year: 2020
Subjects: subject: 004
subject: 070
subject: 310
subject: Stochastisches Modell
subject: Medien
subject: Wirtschaftliche Lage
subject: Indikator
subject: Unbestimmtheit
subject: Wirtschaft
subject: Statistische Analyse
subject: Vorhersagbarkeit
subject: Dokumentanalyse

description: The phenomenon of economic uncertainty has attracted considerable attention in recent years. New indicators have been introduced aiming at measuring uncertainty and its potential economic consequences. Still, the Corona pandemic has hit the world economy virtually out of the blue. In this paper, we argue that, while it is clear that true uncertainty, by definition, cannot be forecasted, better early warning systems could be built. To further this goal, we propose a new taxonomy of economic uncertainty and construct a news-based indicator that captures different kinds of uncertainty, some of which may precede others. If we are able to detect the preludes of an uncertainty shock, we may be able to gauge its size and potential economic impact early on. In earlier writings (Müller et al. 2018, Müller 2020a) we demonstrated the feasibility of Latent Dirichlet Allocation (LDA) for gauging uncertainty. Here, we base our analysis on an enhanced data set, a broader query, and we propose a routine to scan the recent past for new sources of uncertainty. Based on a text corpus of more than 750.000 newspaper articles published since 2008, we run several topic models of the LDA type. As an unsupervised text mining technique LDA has the potential to make economic indicators more sensitive to hitherto unknown – or overlooked – factors of economically relevant uncertainty. Our results are preliminary, yet encouraging. The notion that economic uncertainty comes in three types, two of which, market-based and economic policy uncertainty, may reinforce one another, while the third type is truly exogeneous, is broadly supported by our empirical approach. The Uncertainty Perception Indicator (UPI) is able to shed light on the links between the three categories of uncertainty and is systematically open to new developments; it is designed to detect not merely known unknowns (e.g. fiscal and monetary policy, trade policy, regulation), but also surprising unknowns (e.g. technological, ecological, social changes).
description: DoCMA Working Paper;1-2020
Rundschreiben im Namen der Naturforschenden Gesellschaft, Jules Thurmann (1804–1855), Präsident, gerichtet an die Mitglieder der Schweizerischen Naturforschenden Gesellschaft, aufbewahrt im Nachlass von Joseph Wolfgang von Deschwanden (1819-1866)
Creators: name: Schweizerische Naturforschende Gesellschaft
Publisher: name: [s.n.]
Year: 1853

description: Gedrucktes Rundschreiben aus Porrentruy, gerichtet an "Melch. Deschwanden, Professor an der ob. Industrieschule"
A new catalog of homogenised absorption line indices for Milky Way globular clusters from high-resolution integrated spectroscopy
Creators: name: Kim, Hak-Sub
name: Cho, Jaeil
name: Sharples, Ray M.
name: Vazdekis, Alexandre
name: Beasley, Michael A.
name: Yoon, Suk-Jin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We perform integrated spectroscopy of 24 Galactic globular clusters. Spectra are observed from one core radius for each cluster with a high wavelength resolution of ~2.0 A FWHM. In combination with two existing data sets from Puzia et al. (2002) and Schiavon et al. (2005), we construct a large database of Lick spectral indices for a total of 53 Galactic globular clusters with a wide range of metallicities, -2.4 < [Fe/H] < 0.1, and various horizontal-branch morphologies. The empirical index-to-metallicity conversion relationships are provided for the 20 Lick indices for the use of deriving metallicities for remote, unresolved stellar systems.
description: 21 pages, 10 figures, accepted for publication in ApJS
Characterisation of aluminium-containing nitrogen melilite phases
Creators: name: Chee, K. Sing .
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Impact of non-stationary optical illumination on image reconstruction in optoacoustic tomography
Creators: name: Lou, Yang
name: Wang, Kun
name: Oraevsky, Alexander. A.
name: Anastasio, Mark. A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Optoacoustic tomography (OAT), also known as photoacoustic tomography, is a rapidly emerging hybrid imaging technique that possesses great potential for a wide range of biomedical imaging applications. In OAT, a laser is employed to illuminate the tissue of interest and acoustic signals are produced via the photoacoustic effect. From these data, an estimate of the distribution of the absorbed optical energy density within the tissue is reconstructed, referred to as the object function. This quantity is defined, in part, by the distribution of light fluence within the tissue that is established by the laser source. When performing three-dimensional imaging of large objects, such as a female human breast, it can be difficult to achieve a relatively uniform coverage of light fluence within the volume of interest when the position of the laser source is fixed. To circumvent this, researchers have proposed illumination schemes in which the relative position of the laser source and ultrasound probe is fixed, and both are rotated together to acquire a tomographic data set. A problem with this rotating-illumination scheme is that the tomographic data are inconsistent; namely, the acoustic data recorded at each tomographic view angle (i.e., probe position) are produced by a distinct object function. In this work, the impact of this data inconsistency on image reconstruction accuracy is investigated systematically. This is accomplished by use of computer-simulation studies and application of mathematical results from the theory of microlocal analysis. These studies specify the set of image discontinuities that can be stably reconstructed with a non-stationary optical illumination set-up. The study also includes a comparison of the ability of iterative and analytic image reconstruction methods to mitigate artifacts attributable to the data inconsistency.
Developing a Model to Prevent Job Isolation of School Principals in Iran Based on Grounded Theory
Publisher: name: The University Of Kurdistan
Year: 2022

description: Job isolation affects the quality of work-life of school principals. Given the vital role of\nthe principals in the success of the schools and, consequently, the success of the\ncommunity, this issue is of particular importance. Current qualitative research is done to\ndevelop a model to prevent job isolation of school principals in Iran based on Strauss and\nCorbin's grounded theory and systematic approach. The research participants were school\nprincipals of three educational levels in Iran. A total of 18 school principals were selected\nby theoretical purposeful sampling method. In-depth semi-structured interviews continued\ndata collection until theoretical saturation. Content analysis based on the continuous\ncomparison method of Strauss and Corbin was used to analyze the interview texts. The\nresults of data analysis during three stages of open, axial, and selective coding were 13\ncore categories, 34 subcategories, and 133 concepts analyzed within the framework of the\nparadigm model and in the form of causal conditions (Occupational causes and Managerial\ncauses), contextual conditions (Extra-school Causes, Inter-school Causes, and Human\ncauses), intervening conditions (Demographic causes and the atmosphere of society),\nstrategies (Existence of laitirips assets in the organization, Creating a supportive illtrssp,\nManagerial style, and Modifying the strategic structure of education), and consequences\n(Micro consequences and Macro consequences). The Lincoln and Guba (1985) approach\nwas used to validate the data, including creditability, transferability, dependability, and\nconfirmability. According to this study’s findings, the Education System should initiate\nprograms for principals to help them prevent their job isolation.
The Role of Magnetic Helicity in Structuring the Solar Corona
Creators: name: Knizhnik, Kalman J.
name: Antiochos, Spiro K.
name: DeVore, C. Richard
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Two of the most widely observed and yet most puzzling features of the Sun's magnetic field are coronal loops that are smooth and laminar and prominences/filaments that are strongly sheared. These two features would seem to be quite unrelated in that the loops are near their minimum-energy current-free state, whereas filaments are regions of high magnetic stress and intense electric currents. We argue that, in fact, these two features are inextricably linked in that both are due to a single process: the injection of magnetic helicity into the corona by photospheric motions and the subsequent evolution of this helicity by coronal reconnection. In this paper, we present numerical simulations of the response of a \citet{Parker72} corona to photospheric driving motions that have varying degrees of helicity preference. We obtain four main conclusions: 1) in agreement with the helicity condensation model of \citet{Antiochos13}, the inverse cascade of helicity by magnetic reconnection results in the formation of prominences/filaments localized about polarity inversion lines (PILs); 2) this same process removes most structure from the rest of the corona, resulting in smooth and laminar coronal loops; 3) the amount of remnant tangling in coronal loops is inversely dependent on the net helicity injected by the driving motions; and 4) the structure of the solar corona depends only on the helicity preference of the driving motions and not on their detailed time dependence. We discuss the implications of our results for high-resolution observations of the corona.
description: 19 pages; 13 figures; submitted to ApJ
Predictive Modeling in Pharmaceutical Sales: Anticipating Market Trends with Data Analytics
Creators: name: Bhabad, Rajashree
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 420302
subject: Digital health
classificationCode: 350612
subject: Social marketing

description: This whitepaper explores the application of predictive modeling in pharmaceutical sales, aiming to assist manufacturers, healthcare professionals, and pharma companies in adapting their marketing strategies to dynamic market trends. By harnessing the power of data analytics, this paper highlights how personalized marketing and refined sales strategies can be formulated to maximize revenue and product reach.