cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
New Physics at a Super Flavor Factory
Creators: name: Browder, Thomas E.
name: Gershon, Tim
name: Pirjol, Dan
name: Soni, Amarjit
name: Zupan, Jure
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The potential of a Super Flavor Factory (SFF) for searches of New Physics is reviewed. While very high luminosity B physics is assumed to be at the core of the program, its scope for extensive charm and tau studies are also emphasized. The possibility to run at the Upsilon(5S) is also very briefly discussed; in principle, this could provide very clean measurements of B_s decays. The strength and reach of a SFF is most notably due to the possibility of examining an impressive array of very clean observables. The angles and the sides of the unitarity triangle can be determined with unprecedented accuracy. These serve as a reference for New Physics (NP) sensitive decays such as B^+ ->tau^+ nu and penguin dominated hadronic decay modes, providing tests of generic NP scenarios with an accuracy of a few percent. Besides, very precise studies of direct and time dependent CP asymmetries in radiative B decays and forward-backward asymmetry studies in B-> X_s l^+ l^- and numerous null tests using B, charm and tau decays are also likely to provide powerful insights into NP. The dramatic increase in luminosity at a SFF will also open up entirely new avenues for probing NP observables, e.g. by allowing sensitive studies using theoretically clean processes such as B -> X_s nu nubar. The SFF is envisioned to be a crucial tool for essential studies of flavor in the LHC era, and will extend the reach of the LHC in many important ways.
description: 55 pages, 12 tables, 22 figures, improved referencing, changed Fig. 5, submitted to Reviews of Modern Physics
On the number of two-dimensional threshold functions
Creators: name: Alekseyev, Max A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Combinatorics (math.CO)
subject: Logic (math.LO)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: A two-dimensional threshold function of k-valued logic can be viewed as coloring of the points of a k x k square lattice into two colors such that there exists a straight line separating points of different colors. For the number of such functions only asymptotic bounds are known. We give an exact formula for the number of two-dimensional threshold functions and derive more accurate asymptotics.
description: 17 pages, 2 figures
Interaction Quench in the Hubbard model
Creators: name: Moeckel, M.
name: Kehrein, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Motivated by recent experiments in ultracold atomic gases that explore the nonequilibrium dynamics of interacting quantum many-body systems, we investigate the opposite limit of Landau's Fermi liquid paradigm: We study a Hubbard model with a sudden interaction quench, that is the interaction is switched on at time t=0. Using the flow equation method, we are able to study the real time dynamics for weak interaction U in a systematic expansion and find three clearly separated time regimes: i) An initial buildup of correlations where the quasiparticles are formed. ii) An intermediate quasi-steady regime resembling a zero temperature Fermi liquid with a nonequilibrium quasiparticle distribution function. iii) The long time limit described by a quantum Boltzmann equation leading to thermalization with a temperature T proportional to U.
description: Final version as published
A local-in-time theory for singular SDEs with applications to fluid models with transport noise
Creators: name: Alonso-Orán, Diego
name: Rohde, Christian
name: Tang, Hao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this paper, we establish a local theory, i.e., existence, uniqueness and blow-up criterion, for a general family of singular SDEs in some Hilbert space. The key requirement is an approximation property that allows us to embed the singular drift and diffusion mappings into a hierarchy of regular mappings that are invariant with respect to the Hilbert space and enjoy a cancellation property. Various nonlinear models in fluid dynamics with transport noise belong to this type of singular SDEs. With a cancellation estimate for generalized Lie derivative operators, we can construct such regular approximations for cases involving the Lie derivative operators, or more generally, differential operators of order one with suitable coefficients. In particular, we apply the abstract theory to achieve novel local-in-time results for the stochastic two-component Camassa--Holm (CH) system and for the stochastic Córdoba-Córdoba-Fontelos (CCF) model.
GRB progenitors at low metallicities
Creators: name: Hirschi, R.
name: Meynet, G.
name: Maeder, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We calculated pre-supernova evolution models of single rotating massive stars. These models reproduce observations during the early stages of the evolution very well, in particular Wolf--Rayet (WR) populations and ratio between type II and type Ib,c supernovae at different metallicities (Z). Using these models we found the following results concerning long and soft gamma--ray burst (GRB) progenitors: - GRBs coming from WO--type (SNIc) WR stars are only produced at low Z (LMC or lower). - The upper metallicity limit for GRBs is reduced to Z ~ 0.004 (SMC) when the effects of magnetic fields are included. - GRBs are predicted from the second (and probably the first) stellar generation onwards.
description: 5 pages, 1 figure, to appear in the proceedings of "Swift and GRBs: Unveiling the Relativistic Universe", San Servolo, Venice, 5-9 June 2006
A Gallery of Gaussian Periods
Creators: name: Eischen, Ellen
name: Garcia, Stephan Ramon
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Gaussian periods are certain sums of roots of unity whose study dates back to Gauss's seminal work in algebra and number theory. Recently, large scale plots of Gaussian periods have been revealed to exhibit striking visual patterns, some of which have been explored in the second named author's prior work. In 2020, the first named author produced a new app, \texttt{Gaussian periods}, which allows anyone to create these plots much more efficiently and at a larger scale than before. In this paper, we introduce Gaussian periods, present illustrations created with the new app, and summarize how mathematics controls some visual features, including colorings left unexplained in earlier work.
Magneto-spectroscopy of Highly-Aligned Carbon Nanotubes: Identifying the Role of Threading Magnetic Flux
Creators: name: Shaver, J.
name: Crooker, S. A.
name: Fagan, J. A.
name: Hobbie, E. K.
name: Ubrig, N.
name: Portugall, O.
name: Perebeinos, V.
name: Avouris, Ph.
name: Kono, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have investigated excitons in highly-aligned single-walled carbon nanotubes (SWCNTs) through optical spectroscopy at low temperature (1.5 K) and high magnetic fields ($\textbf{\textit{B}}$) up to 55 T. SWCNT/polyacrylic acid films were stretched, giving SWCNTs that are highly aligned along the direction of stretch ($\hat{n}$). Utilizing two well-defined measurement geometries, $\hat{n}\parallel\textbf{\textit{B}}$ and $\hat{n}\perp\textbf{\textit{B}}$, we provide unambiguous evidence that the photoluminescence energy and intensity are only sensitive to the $\textbf{\textit{B}}$-component parallel to the tube axis. A theoretical model of one-dimensional magneto-excitons, based on exchange-split `bright' and `dark' exciton bands with Aharonov-Bohm-phase-dependent energies, masses, and oscillator strengths, successfully reproduces our observations and allows determination of the splitting between the two bands as $\sim4.8$ meV for (6,5) SWCNTs.
description: 4 pages, 4 figures
Calliope: Automatic Visual Data Story Generation from a Spreadsheet
Creators: name: Shi, Danqing
name: Xu, Xinyue
name: Sun, Fuling
name: Shi, Yang
name: Cao, Nan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Visual data stories shown in the form of narrative visualizations such as a poster or a data video, are frequently used in data-oriented storytelling to facilitate the understanding and memorization of the story content. Although useful, technique barriers, such as data analysis, visualization, and scripting, make the generation of a visual data story difficult. Existing authoring tools rely on users' skills and experiences, which are usually inefficient and still difficult. In this paper, we introduce a novel visual data story generating system, Calliope, which creates visual data stories from an input spreadsheet through an automatic process and facilities the easy revision of the generated story based on an online story editor. Particularly, Calliope incorporates a new logic-oriented Monte Carlo tree search algorithm that explores the data space given by the input spreadsheet to progressively generate story pieces (i.e., data facts) and organize them in a logical order. The importance of data facts is measured based on information theory, and each data fact is visualized in a chart and captioned by an automatically generated description. We evaluate the proposed technique through three example stories, two controlled experiments, and a series of interviews with 10 domain experts. Our evaluation shows that Calliope is beneficial to efficient visual data story generation.
Characterization of the energy level-structure of a trapped dipolar Bose gas via mean-field parametric resonances
Creators: name: Sakhel, Asaad R.
name: Sakhel, Roger R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We report parametric resonances (PRs) in the mean-field dynamics of a one-dimensional dipolar Bose-Einstein condensate (DBEC) in widely varying trapping geometries. The chief goal is to characterize the energy levels of this system by analytical methods and the significance of this study arises from the commonly known fact that in the presence of interactions the energy levels of a trapped BEC are hard to calculate analytically. The latter characterization is achieved by a matching of the PR energies to energy levels of the confining trap using perturbative methods. Further, this work reveals the role of the interplay between dipole-dipole interactions (DDI) and trapping geometry in defining the energies and amplitudes of the PRs. The PRs are induced by a negative Gaussian potential whose depth oscillates with time. Moreover, the DDI play a role in this induction. The dynamics of this system is modeled by the time-dependent Gross- Pitaevskii equation (TDGPE) that is numerically solved by the Crank-Nicolson method. The PRs are discussed basing on analytical methods: first, it is shown that it is possible to reproduce PRs by the Lagrangian variational method that are similar to the ones obtained from TDGPE. Second, the energies at which the PRs arise are closely matched with the energy levels of the corresponding trap calculated by time-independent perturbation theory. Third, the most probable transitions between the trap energy levels yielding PRs are determined by time-dependent perturbation theory. The most significant result of this work is that we have been able to characterize the above mentioned energy levels of a DBEC in a complex trapping potential.
description: 6 figures, 18 pages
International Conference on Social Sciences, Humanities & Management Studies (ICSHMS-2022)
Creators: name: IIARP Conference
Publisher: name: F1000 Research Limited
Year: 2022

description: International Conference on Social Sciences, Humanities & Management Studies (ICSHMS-2022) is the premier meeting place for researchers, professors, students and professionals of different areas. Now the conference is extended across many regions of the world. This conference intends to bring together and provide a common platform to accumulate and exchange the innovative ideas, latest knowledge and unique experiences for the benefits of researchers, professors, industrialists, academicians, students, and other participants.

 Some of the participants were not able to join us live but you can go to our YouTube channel to see their presentations. YouTube Channel Link
A priori Knowledge and the Kochen-Specker Theorem
Creators: name: Brunet, Olivier
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce and formalize a notion of "a priori knowledge" about a quantum system, and show some properties about this form of knowledge. Finally, we show that the Kochen-Specker theorem follows directly from this study. This version is a draft version, the bibliography in particular is extremely scarce. Comments welcome.
Bond chaos in the Sherrington-Kirkpatrick model
Creators: name: Aspelmeier, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We calculate the probability distribution of the overlap between a spin glass and a copy of itself in which the bonds are randomly perturbed in varying degrees. The overlap distribution is shown to go to a delta distribution in the thermodynamic limit for arbitrarily small perturbations (bond chaos) and we obtain the scaling behaviour of the distribution with system size N in the high and low temperature phases and exactly at the critical temperature. The results are relevant for the free energy fluctuations in the Sherrington-Kirkpatrick model.
description: 12 pages, no figures
Improved Frequency Ratio Measurement with 87Sr and 171Yb Optical Lattice Clocks at NMIJ
Creators: name: Hisai, Yusuke
name: Akamatsu, Daisuke
name: Kobayashi, Takumi
name: Hosaka, Kazumoto
name: Inaba, Hajime
name: Hong, Feng-Lei
name: Yasuda, Masami
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report improved frequency ratio measurement with $^{87}$Sr and $^{171}$Yb optical lattice clocks at the National Metrology Institute of Japan (NMIJ). The $^{87}$Sr optical lattice clock is enhanced with several major modifications and is re-evaluated with a reduced uncertainty of $1.1\times10^{-16}$. We employed a $^{171}$Yb optical lattice clock with an uncertainty of $4\times10^{-16}$ that was developed for contributing to International Atomic Time (TAI). The measurement result is $ν_{\mathrm{Yb}}/ν_{\mathrm{Sr}}$ = 1.207 507 039 343 338 58(49)$_{\mathrm{sys}}$(6)$_{\mathrm{stat}}$ with a fractional uncertainty of $4.1\times10^{-16}$, which is 3.4 times smaller than our previous measurement result.
description: 8 pages, 6 figures, 1 table
Regularization of systems of nonlinear ill-posed equations: II. Applications
Creators: name: Haltmeier, M.
name: Kowar, R.
name: Leitao, A.
name: Scherzer, O.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65J20, 65J15, 47J06

description: In part I we introduced modified Landweber-Kaczmarz methods and have established a convergence analysis. In the present work we investigate three applications: an inverse problem related to thermoacoustic tomography, a nonlinear inverse problem for semiconductor equations, and a nonlinear problem in Schlieren tomography. Each application is considered in the framework established in the previous part. The novel algorithms show robustness, stability, computational efficiency and high accuracy.
description: 20 pages, 12 figures
NUTQ, NUTQ ODOBI VA NUTQ MADANIYATI
Creators: name: Xolmirzaev Xayitboy Dedaxonovich
Publisher: name: Zenodo
Year: 2025

description: Аnnotatsiya: Qadim ajdodlar “Soʼzlaganing kumush boʼlsa, tek turganing oltindir” deganlar. Bunga qaraganda, har yerda soʼzlamasdan jim oʼtirishga toʼgʼri keladi. Chunki ajdodlar “Oʼrinsiz, maʼnosiz soʼzlaganingdan koʼra, tek turganing yaxshiroq” demoqchidirlar. Har ishning oʼziga xos odobi boʼlgani kabi, soʼzlashning ham oʼlchovi va odobi bordir. Soʼzga yolgʼon qoʼshish, birovning izzat, nafsiga tegadigan soʼzlarni soʼzlash va shunga oʼxshash yaramas soʼzlar zarar yetkizmasdan qolmaydi.
Enhancing the accuracy of a data-driven reconstruction of bivariate jump-diffusion models with corrections for higher orders of the sampling interval
Creators: name: Aslim, Esra
name: Rings, Thorsten
name: Zabawa, Lina
name: Lehnertz, Klaus
Publisher: name: arXiv
Year: 2021
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We evaluate the significance of a recently proposed bivariate jump-diffusion model for a data-driven characterization of interactions between complex dynamical systems. For various coupled and non-coupled jump-diffusion processes, we find that the inevitably finite sampling interval of time-series data negatively affects the reconstruction accuracy of higher-order conditional moments that are required to reconstruct the underlying jump-diffusion equations. We derive correction terms for conditional moments in higher orders of the sampling interval and demonstrate their suitability to strongly enhance the data-driven reconstruction accuracy.
description: 17 pages, 4 figures
Configuration of points and strings
Creators: name: Reider, Igor
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Geometry (math.AG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 14J, 14J60

description: Let $X$ be a smooth projective variety of dimension $n\geq 2$. It is shown that a finite configuration of points on $X$ subject to certain geometric conditions possesses rich inner structure. On the mathematical level this inner structure is a variation of Hodge-like structure. As a consequence one can attach to such point configurations: (i) Lie algebras and their representations (ii) Fano toric variety whose hyperplane sections are Calabi-Yau varieties. These features lead to a picture which is very suggestive of quantum gravity according to string theory.
description: 32 pages, 1 figure this version will appear in Journal of Geometry and Physics
Stronger, Faster and More Explainable: A Graph Convolutional Baseline for Skeleton-based Action Recognition
Creators: name: Song, Yi-Fan
name: Zhang, Zhang
name: Shan, Caifeng
name: Wang, Liang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: One essential problem in skeleton-based action recognition is how to extract discriminative features over all skeleton joints. However, the complexity of the State-Of-The-Art (SOTA) models of this task tends to be exceedingly sophisticated and over-parameterized, where the low efficiency in model training and inference has obstructed the development in the field, especially for large-scale action datasets. In this work, we propose an efficient but strong baseline based on Graph Convolutional Network (GCN), where three main improvements are aggregated, i.e., early fused Multiple Input Branches (MIB), Residual GCN (ResGCN) with bottleneck structure and Part-wise Attention (PartAtt) block. Firstly, an MIB is designed to enrich informative skeleton features and remain compact representations at an early fusion stage. Then, inspired by the success of the ResNet architecture in Convolutional Neural Network (CNN), a ResGCN module is introduced in GCN to alleviate computational costs and reduce learning difficulties in model training while maintain the model accuracy. Finally, a PartAtt block is proposed to discover the most essential body parts over a whole action sequence and obtain more explainable representations for different skeleton action sequences. Extensive experiments on two large-scale datasets, i.e., NTU RGB+D 60 and 120, validate that the proposed baseline slightly outperforms other SOTA models and meanwhile requires much fewer parameters during training and inference procedures, e.g., at most 34 times less than DGNN, which is one of the best SOTA methods.
description: Accepted by ACM MultiMedia 2020, 9 pages, 4 figures, 5 tables
The cultural construction of breast cancer
Creators: name: Mears, Bronwen Jane
Publisher: name: University of British Columbia
Year: 2009

description: This thesis explores the cultural construction of women's experiences with breast cancer in Vancouver, British Columbia. After completing treatment for breast cancer women must reformulate their personal biographies to include the diagnosis and treatment. This reformulation includes the reconstruction of self, both identity and body, and of biographical time and takes place within a social context. In this thesis I explore the cultural frameworks that guide these reformulations. I refer to these as breast cancer narratives. I interviewed 32 women who have completed treatment for breast cancer. There are two sets of data: one set of 29 collected in single interviews, and one set of three collected over multiple interviews. I analyze the interviews looking for common themes and structures from which I constructed breast cancer narratives. In Canadian society, cancer has been commonly portrayed as a "death sentence". Recently, there has been an attempt to transform this portrayal of cancer to one of a disease which can be survived. The breast cancer narratives include both portrayals of cancer, resulting in an ambiguity about survival. This ambiguity is resolved by constructing a viable discourse of hope for the future. During the process of diagnosis and treatment the participants learn a discourse of hope which is informed by biomedical culture and focuses on successful treatment. However, once treatment is complete, the participants are faced with challenges to their construction of hope, stemming from the belief that cancer is a terminal illness. To meet these challenges they modify their discourse of hope. I identify four cultural schema used by participants to reformulate their personal biographies. These schema link concepts of what may have caused the cancer and the evolving discourse of hope. This multiplicity of schema leave the potential for conflict. As a result of the multiple schema and modifications to the discourse of hope the constructions of breast cancer are diverse. Therefore there are multiple and conflicting constructions of breast cancer in Canadian Society. This is an important consideration when developing services for women who have had a diagnosis of breast cancer.
Differential rotation and stellar magnetism impact star-planet tidal interactions
Creators: name: Astoul, Aurélie
name: Mathis, Stéphane
name: Baruteau, Clément
name: Park, Junho
name: Gallet, Florian
name: Strugarek, Antoine
name: Augustson, Kyle C.
name: Brun, Sacha A.
name: Bolmont, Emeline
Publisher: name: Zenodo
Year: 2021
Subjects: Stellar systems, clusters, and associations
Cool Stars on the main sequence

description: Over 4000 exoplanets have been discovered in the past 25 years or so, most of which orbit cool stars. Star-planet tidal interactions are known to drive the late evolution of the shortest-period planetary systems via tidal dissipation. Such dissipation is known to vary considerably with the mass, age, rotation, and metallicity of the star. To quantify tidal dissipation as accurately as possible, two key physical mechanisms need to be further explored : stellar differential rotation and magnetism in convective regions, which have been constrained in cool stars by ground-based spectropolarimetric observations as well as space-based asteroseismic observations.
 In this contribution, we report our recent progress on the investigation of the impact of stellar differential rotation and magnetism on the dynamics and dissipation of tidal inertial waves, along the evolution of low-mass stars. First, we show that a large-scale magnetic field has a negligible effect on the excitation of tidal waves whereas it deeply impacts the dissipation mechanism of tidal waves in the convective envelope of all cool stars all along their evolution. Then, by developing a local shearing box model of a small patch of the convective shell, we demonstrate how tidal waves can be either fully transmitted, damped, or even amplified at the so-called critical layers (when the phase speed of the wave is equal to the local velocity of the fluid), that has potentially strong implications for angular momentum exchanges between tidal waves and zonal flows, and ultimately for the evolution of planetary systems.
description: {"references": ["Lin & Ogilvie (2019). DOI:10.1093/mnras/stx2764", "Amard et al. (2019). DOI: 10.1051/0004-6361/201935160", "See et al. (2019). DOI: 10.3847/1538-4357/ab46b2", "Astoul et al. (2019). DOI: 10.1051/0004-6361/201936477", "Brun et al. (2017). DOI: 10.3847/1538-4357/aa5c40", "Astoul et al. (2021). DOI: 10.1051/0004-6361/202039148"]}
An elastic, plastic, viscous model for slow shear of a liquid foam
Creators: name: Marmottant, Philippe
name: Graner, François
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We suggest a scalar model for deformation and flow of an amorphous material such as a foam or an emulsion. To describe elastic, plastic and viscous behaviours, we use three scalar variables: elastic deformation, plastic deformation rate and total deformation rate; and three material specific parameters: shear modulus, yield deformation and viscosity. We obtain equations valid for different types of deformations and flows slower than the relaxation rate towards mechanical equilibrium. In particular, they are valid both in transient or steady flow regimes, even at large elastic deformation. We discuss why viscosity can be relevant even in this slow shear (often called "quasi-static") limit. Predictions of the storage and loss moduli agree with the experimental literature, and explain with simple arguments the non-linear large amplitude trends.
Pattern formations driven by cyclic interactions: a brief review of recent developments
Creators: name: Szolnoki, A.
name: de Oliveira, B. F.
name: Bazeia, D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Lotka's seminal work (A.J. Lotka A., Proc. Natl. Acad. Sci. U.S.A. 6 (1920) 410) "on certain rhythmic relations'' is already one hundred years old, but the research activity about pattern formations due to cyclical dominance is more vibrant than ever. It is because non-transitive interactions have paramount role on maintaining biodiversity and adequate human intervention into ecological systems requires deeper understanding of related dynamical processes. In this perspective article we overview different aspects of biodiversity, with focus on how it can be maintained based on mathematical modeling of last years. We also briefly discuss the potential links to evolutionary game models of social systems, and finally, give an overview about potential prospects for future research.
description: 7 two-column pages, 3 figures, Perspective article for EPL
Machine Learning analysis of self-consistent magnetic flux ropes realized in M-dwarf dynamo simulations
Creators: name: Bice, Connor P
name: Toomre, Juri
Publisher: name: Zenodo
Year: 2021

description: The dynamical origins of the intense magnetic activity exhibited by most M-dwarf stars remains an unanswered question in stellar astrophysics. Despite the central role magnetic flux ropes are thought to play in the formation of sun and star spots, global MHD simulations of stellar interiors have historically struggled to self-consistently capture their dynamics. By their nature, these structures tend to be short-lived or wholly absent in all but the most turbulent high-resolution simulations -- environments which make their hand-identification and study prohibitively time-consuming. We present here a novel machine learning approach for the identification and dynamical analysis of the hundreds of self-consistent, rising flux ropes in our simulations of M-dwarf interiors. We report on the details of the models developed, as well as the prospects for their continued use with not only our own simulations, but those of the entire stellar convection community.
description: Supported by NASA grants NNX17AG22G and 80NSSC20K1543
The Forest Metrics for Graph Vertices
Creators: name: Chebotarev, Pavel
name: Shamis, Elena
Publisher: name: arXiv
Year: 2006
Subjects: subject: Combinatorics (math.CO)
subject: Networking and Internet Architecture (cs.NI)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 05C50, 05C05, 05C12, 15A51

description: We propose a new graph metric and study its properties. In contrast to the standard distance in connected graphs, it takes into account all paths between vertices. Formally, it is defined as d(i,j)=q_{ii}+q_{jj}-q_{ij}-q_{ji}, where q_{ij} is the (i,j)-entry of the {\em relative forest accessibility matrix} Q(ε)=(I+εL)^{-1}, L is the Laplacian matrix of the (weighted) (multi)graph, and εis a positive parameter. By the matrix-forest theorem, the (i,j)-entry of the relative forest accessibility matrix of a graph provides the specific number of spanning rooted forests such that i and j belong to the same tree rooted at i. Extremely simple formulas express the modification of the proposed distance under the basic graph transformations. We give a topological interpretation of d(i,j) in terms of the probability of unsuccessful linking i and j in a model of random links. The properties of this metric are compared with those of some other graph metrics. An application of this metric is related to clustering procedures such as "centered partition." In another procedure, the relative forest accessibility and the corresponding distance serve to choose the centers of the clusters and to assign a cluster to each non-central vertex. The notion of cumulative weight of connections between two vertices is proposed. The reasoning involves a reciprocity principle for weighted multigraphs. Connections between the resistance distance and the forest distance are established.
description: 14 pages, 19 ref
Grassman manifolds as subsets of Euclidean spaces
Creators: name: Machado, Armando
name: Salavessa, Isabel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C40, 58B20

description: We consider the Grassman manifold $G(E)$ as the subset of all orthogonal projections of a given Euclidean space $E$ and obtain some explicit formulas concerning the differential geometry of $G(E)$ as a submanifold of $L(E,E)$ endowed with the Hilbert-Schmidt inner product. Most of these formulas can be naturally extended to the infinite dimensional Hilbert space case.
description: Latex-reformatted version of the conference article "Grassman manifolds as subsets of Euclidean Spaces", in Differential Geometry, Proc. 5th Int. Colloq., Santiago de Compostela, Spain, 1984, Research Notes in Mathematics, 131, 85-102, Pitman Adv. Pub. Prog., Boston-London-Melbourne (1985); scans of original paper attached as figures
Data Augmentation for Graph Classification
Creators: name: Zhou, Jiajun
name: Shen, Jie
name: Xuan, Qi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Graph classification, which aims to identify the category labels of graphs, plays a significant role in drug classification, toxicity detection, protein analysis etc. However, the limitation of scale of benchmark datasets makes it easy for graph classification models to fall into over-fitting and undergeneralization. Towards this, we introduce data augmentation on graphs and present two heuristic algorithms: random mapping and motif-similarity mapping, to generate more weakly labeled data for small-scale benchmark datasets via heuristic modification of graph structures. Furthermore, we propose a generic model evolution framework, M-Evolve, which combines graph augmentation, data filtration and model retraining to optimize pre-trained graph classifiers. Experiments conducted on six benchmark datasets demonstrate that M-Evolve helps existing graph classification models alleviate over-fitting when training on small-scale benchmark datasets and yields an average improvement of 3-12% accuracy on graph classification tasks.
description: Accepted by CIKM 2020. arXiv admin note: substantial text overlap with arXiv:2007.05700
CCD Photometry of Delta Scuti stars 7 Aql and 8 Aql
Creators: name: Machado, L. Fox
name: Michel, R.
name: Alvarez, M.
name: Parrao, L.
name: Castro, A.
name: Pena, J. H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: As a continuation of the study of the Delta Scuti stars 7 Aql and 8 Aql; new CCD photometric data were acquired in 2007. We present a period analysis on these data that confirm the dominant modes detected in each star in the framework of the STEPHI XII campaign in 2003.
description: 9 pages, 7 figures, 2 tables; Accepted for publication in Communications in Asteroseismology, Vol 153, 2008
PhaseGAN: A deep-learning phase-retrieval approach for unpaired datasets
Creators: name: Zhang, Yuhe
name: Noack, Mike Andreas
name: Vagovic, Patrik
name: Fezzaa, Kamel
name: Garcia-Moreno, Francisco
name: Ritschel, Tobias
name: Villanueva-Perez, Pablo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Optics (physics.optics)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: Phase retrieval approaches based on DL provide a framework to obtain phase information from an intensity hologram or diffraction pattern in a robust manner and in real time. However, current DL architectures applied to the phase problem rely i) on paired datasets, i.e., they are only applicable when a satisfactory solution of the phase problem has been found, and ii) on the fact that most of them ignore the physics of the imaging process. Here, we present PhaseGAN, a new DL approach based on Generative Adversarial Networks, which allows the use of unpaired datasets and includes the physics of image formation. Performance of our approach is enhanced by including the image formation physics and provides phase reconstructions when conventional phase retrieval algorithms fail, such as ultra-fast experiments. Thus, PhaseGAN offers the opportunity to address the phase problem when no phase reconstructions are available, but good simulations of the object or data from other experiments are available, enabling us to obtain results not possible before.
von Sinner, Rudolf (Hrsg.), Leonardo Boff und die protestantische Theologie
Creators: name: Jahnel, Claudia
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 60 Nr. 4 (2011): Ökumenische Rundschau, Band 60, Heft 4
Bs-->K+K- and Bs-->K0 anti-K0 Decays within Supersymmetry
Creators: name: Baek, Seungwon
name: London, David
name: Matias, Joaquim
name: Virto, Javier
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the supersymmetric (SUSY) contributions to the observables in Bs-->K+K- and Bs-->K0 anti-K0 decays. The hadronic parameters in the standard-model (SM) amplitudes are obtained from the Bd-->K0 anti-K0 decay using a recent approach that combines flavor SU(3) symmetry and a controlled input from QCD factorization. The latest experimental data for BR(Bs-->K+K-) is in agreement with the SM prediction. We study how the branching ratios and the direct and mixing-induced CP asymmetries of both Bs-->KK decay modes are affected with the inclusion of SUSY, after imposing constraints from BR(B--> Xs gamma), B--> pi K and Delta Ms over the parameter space. While the branching ratios remain unaffected by SUSY, we identify the CP asymmetries of the Bs-->KK decays as the most promising observables to look for large deviations from the SM.
description: 16 pages, 4 figures. New comments and references added
Damping by slow relaxing rare earth impurities in Ni80Fe20
Creators: name: Woltersdorf, G.
name: Kiessling, M.
name: Meyer, G.
name: Thiele, J. -U.
name: Back, C. H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Doping NiFe by heavy rare earth atoms alters the magnetic relaxation properties of this material drastically. We show that this effect can be well explained by the slow relaxing impurity mechanism. This process is a consequence of the anisotropy of the on site exchange interaction between the 4f magnetic moments and the conduction band. As expected from this model the magnitude of the damping effect scales with the anisotropy of the exchange interaction and increases by an order of magnitude at low temperatures. In addition our measurements allow us to determine the relaxation time of the 4f electrons as a function of temperature.
Observing low elevation sky and the CMB Cold Spot with BICEP3 at the South Pole
Creators: name: Kang, J.
name: Ade, P. A. R.
name: Ahmed, Z.
name: Amiri, M.
name: Barkats, D.
name: Thakur, R. Basu
name: Bischoff, C. A.
name: Bock, J. J.
name: Boenish, H.
name: Bullock, E.
name: Buza, V.
name: Cheshire, J. R.
name: Connors, J.
name: Cornelison, J.
name: Crumrine, M.
name: Cukierman, A.
name: Denison, E.
name: Dierickx, M.
name: Duband, L.
name: Eiben, M.
name: Fatigoni, S.
name: Filippini, J. P.
name: Fliescher, S.
name: Goeckner-Wald, N.
name: Goldfinger, D. C.
name: Grayson, J. A.
name: Grimes, P.
name: Hall, G.
name: Halpern, M.
name: Harrison, S. A.
name: Henderson, S.
name: Hildebrandt, S. R.
name: Hilton, G. C.
name: Hubmayr, J.
name: Hui, H.
name: Irwin, K. D.
name: Karkare, K. S.
name: Karpel, E.
name: Kefeli, S.
name: Kernasovskiy, S. A.
name: Kovac, J. M.
name: Kuo, C. L.
name: Lau, K.
name: Leitch, E. M.
name: Megerian, K. G.
name: Minutolo, L.
name: Moncelsi, L.
name: Nakato, Y.
name: Namikawa, T.
name: Nguyen, H. T.
name: O'Brient, R.
name: Ogburn, R. W.
name: Palladino, S.
name: Precup, N.
name: Prouve, T.
name: Pryke, C.
name: Racine, B.
name: Reintsema, C. D.
name: Richter, S.
name: Schillaci, A.
name: Schmitt, B. L.
name: Schwarz, R.
name: Sheehy, C. D.
name: Soliman, A.
name: Germaine, T. St.
name: Steinbach, B.
name: Sudiwala, R. V.
name: Teply, G. P.
name: Thompson, K. L.
name: Tolan, J. E.
name: Tucker, C.
name: Turner, A. D.
name: Umiltà, C.
name: Vieregg, A. G.
name: Wandui, A.
name: Weber, A. C.
name: Wiebe, D. V.
name: Willmert, J.
name: Wong, C. L.
name: Wu, W. L. K.
name: Yang, E.
name: Yoon, K. W.
name: Young, E.
name: Yu, C.
name: Zeng, L.
name: Zhang, C.
name: Zhang, S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: BICEP3 is a 520 mm aperture on-axis refracting telescope at the South Pole, which observes the polarization of the cosmic microwave background (CMB) at 95 GHz to search for the B-mode signal from inflationary gravitational waves. In addition to this main target, we have developed a low-elevation observation strategy to extend coverage of the Southern sky at the South Pole, where BICEP3 can quickly achieve degree-scale E-mode measurements over a large area. An interesting E-mode measurement is probing a potential polarization anomaly around the CMB Cold Spot. During the austral summer seasons of 2018-19 and 2019-20, BICEP3 observed the sky with a flat mirror to redirect the beams to various low elevation ranges. The preliminary data analysis shows degree-scale E-modes measured with high signal-to-noise ratio.
description: 12 pages, 10 figures; Figure 7 shows the correct file
Jones-Wenzl idempotents For Rank 2 Simple Lie algebras
Creators: name: Kim, Dongseok
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Topology (math.GN)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: Primary 57M27, Secondary 57M25, 57R56

description: Temperley-Lieb algebras have been generalized to web spaces for rank 2 simple Lie algebras. Using these webs, we find a complete description of the Jones-Wenzl idempotents for the quantum sl(3) and sp(4) by single clasp expansions. We discuss applications of these expansions.
Coriplites proctori Oertel, Wolf, Al-Rasheid & Foissner 2009
Creators: name: Durán-Ramírez, Carlos Alberto
name: Dias, Roberto Júnio Pedroso
name: Estrada, Rosaura Mayén-
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Chromista
Ciliophora
Gymnostomatea
Haptorida
Acropisthiidae
Coriplites
Coriplites proctori

description: Coriplites proctori Oertel, Wolf, Al-Rasheid & Foissner, 2009
Distribution. JAMAICA: Dunthorn et al. 2012 (Ap, Hu); Parish Saint Elizabeth, near the road between the villages of Aberdeen and Quick Step (Oertel et al. 2009), (Ap). MEXICO: Coffee plantation Virginia Armand, near Coatepec (Durán-Ramírez et al. 2015), (Th); Ixtlán de Juárez (Durán-Ramírez et al. 2015), (To); Santuario del Bosque de Niebla, near Xalapa (Durán-Ramírez et al. 2015), (Th).
description: Published as part of Durán-Ramírez, Carlos Alberto, Dias, Roberto Júnio Pedroso & Estrada, Rosaura Mayén-, 2020, Checklist of ciliates (Alveolata: Ciliophora) that inhabit in bromeliads from the Neotropical Region, pp. 1-36 in Zootaxa 4895 (1) on page 14, DOI: 10.11646/zootaxa.4895.1.1, http://zenodo.org/record/4321437
Abraham, William J. / Kirby, James E. (Hrsg.), The Oxford Handbook of Methodist Studies
Creators: name: Voigt, Karl Heinz
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 60 Nr. 4 (2011): Ökumenische Rundschau, Band 60, Heft 4
Quasiperiodically driven ratchets for cold atoms
Creators: name: Gommers, R.
name: Denisov, S.
name: Renzoni, F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate experimentally the route to quasiperiodicity in a driven ratchet for cold atoms, and examine the relationship between symmetries and transport while approaching the quasiperiodic limit. Depending on the specific form of driving, quasiperiodicity results in the complete suppression of transport, or into the restoration of the symmetries which hold for a periodic driving.
description: misprint in the label of Fig. 4 corrected
Regulated expression of cadherin-6 and cadherin-11 in human and baboon (Papio Anubis) endometrium
Creators: name: Getsios, Spiro
Publisher: name: University of British Columbia
Year: 2009

description: The human endometrium undergoes extensive proliferation and differentiation during the menstrual cycle. To date, the molecular mechanisms involved in the cyclic remodeling of the endometrium remain poorly characterised. The cadherins are a large family of integral membrane glycoproteins which mediate calcium-dependent cell adhesion and play a central role in the formation and organisation of tissues during development. We have recently determined that the two novel cadherin subtypes, cadherin-6 and cadherin-11, are present in the human endometrium. In view of these observations, we have examined the spatiotemporal expression of these two cadherin subtypes in this complex tissue. Cadherin-6 and cadherin-11 are expressed in the glandular epithelium during the proliferative phase. The expression of epithelial cadherin-6 declines as the cycle enters the secretory phase, whereas cadherin-11 levels in the glandular epithelium remain constant throughout the menstrual cycle. In contrast, these two cadherin subtypes are differentially expressed in the endometrial stroma. Cadherin-6 is only expressed in the proliferative endometrial stroma. The loss of cadherin-6 expression in the stroma cells during the secretory phase is concomitant with an increase in the levels of cadherin-11. As the switch between cadherin- 6 and cadherin-11 in the endometrial stromal occurs when these cells are undergoing progesterone-mediated cellular differentiation, we examined the ability of this gonadal steroid to regulate these two endometrial cadherin subtypes in isolated endometrial stroma cells. Progesterone was capable of differentially regulating cadherin-6 and cadherin-11. In addition, we failed to detect cadherin-11 expression in endometrial biopsies obtained from women with habitual abortion associated with luteal phase deficiency, suggesting that cadherin-11 may play a central role in the functional maturation of the endometrium. Finally, we have localised these two cadherin subtypes in the baboon uterus in order to determine whether this non-human primate will serve as a suitable model in which to examine the role of cadherin-6 and cadherin-11 in implantation-related processes. The spatiotemporal expression of cadherin-6 and cadherin-11 in the human and baboon endometrium is similar. Collectively, these observations suggest that the two cadherin subtypes, cadherin-6 and cadherin-11, play a central role in the cyclic remodeling of the human endometrium in preparation for the implanting embryo.