cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spin polarization dynamics in the Bjorken-expanding resistive MHD background
Creators: name: Singh, Rajeev
name: Shokri, Masoud
name: Ryblewski, Radoslaw
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Evolution of spin polarization in the presence of external electric field is studied for collision energies $\sqrt{s_{\rm NN}}=27\,{\rm GeV}$ and $\sqrt{s_{\rm NN}}=200\,{\rm GeV}$. The numerical analysis is done in the perfect-fluid Bjorken-expanding resistive magnetohydrodynamic background and novel results are reported. In particular, we show that the electric field plays a significant role in the competition between expansion and dissipation.
description: 12 pages, 6 figures; Accepted version; Comments are very much welcome!
Privacy-preserving Continual Federated Clustering via Adaptive Resonance Theory
Creators: name: Masuyama, Naoki
name: Nojima, Yusuke
name: Toda, Yuichiro
name: Loo, Chu Kiong
name: Ishibuchi, Hisao
name: Kubota, Naoyuki
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Cryptography and Security (cs.CR)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: With the increasing importance of data privacy protection, various privacy-preserving machine learning methods have been proposed. In the clustering domain, various algorithms with a federated learning framework (i.e., federated clustering) have been actively studied and showed high clustering performance while preserving data privacy. However, most of the base clusterers (i.e., clustering algorithms) used in existing federated clustering algorithms need to specify the number of clusters in advance. These algorithms, therefore, are unable to deal with data whose distributions are unknown or continually changing. To tackle this problem, this paper proposes a privacy-preserving continual federated clustering algorithm. In the proposed algorithm, an adaptive resonance theory-based clustering algorithm capable of continual learning is used as a base clusterer. Therefore, the proposed algorithm inherits the ability of continual learning. Experimental results with synthetic and real-world datasets show that the proposed algorithm has superior clustering performance to state-of-the-art federated clustering algorithms while realizing data privacy protection and continual learning ability. The source code is available at \url{https://github.com/Masuyama-lab/FCAC}.
description: This paper is currently under review. arXiv admin note: substantial text overlap with arXiv:2305.01507
Water entry and exit of 2D and axisymmetric bodies
Creators: name: Del Buono, Alessandro
name: Bernardini, Giovanni
name: Tassin, Alan
name: Iafrati, Alessandro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The present paper is dedicated to the development of a numerical model for the water impact of two-dimensional (2D) and axisymmetric bodies with imposed motion. The work is a first step towards the implementation of a 2D+t procedure to be used for the analysis of aircraft ditching. The problem is investigated under the assumptions of an inviscid and incompressible fluid, which is modelled by a potential flow model with fully non-linear boundary conditions at the free-surface. The unsteady boundary value problem with a free-surface is numerically solved through a boundary element method, coupled to a simplified finite element method to describe the thinnest part of the jet. The study is aimed at describing the entry and exit phases. Specific numerical solutions are developed to tackle the exit phase and to improve the stability of the model. Results are presented in terms of free-surface shape, pressure distribution and hydrodynamic load acting on the impacting body. The model is used to study the water entry and exit of a 2D wedge and an axisymmetric cone, for which numerical or experimental results are available in the literature. The numerical investigation shows that the proposed model accurately simulate both the entry and exit phases. For the exit phase, it is shown that the proposed model, being fully non-linear, provides a much better prediction of the loads and the wetted area compared to simplified (analytical) approaches. The effects of the gravity, usually missing in the approaches available in the literature, are also investigated, showing they are rather important, especially, in the exit phase.
description: 22 pages, 15 figures
The inverse-Compton X-ray-emitting lobes of the high-redshift giant radio galaxy 6C 0905+39
Creators: name: Erlund, M. C.
name: Fabian, A. C.
name: Blundell, Katherine M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present new XMM-Newton data of the high-redshift (z=1.883), Mpc-sized giant radio galaxy 6C 0905+39. The larger collecting area and longer observation time for our new data means that we can better characterise the extended X-ray emission, in particular its spectrum, which arises from cosmic microwave background photons scattered into the X-ray band by the energetic electrons in the spent synchrotron plasma of the (largely) radio-quiet lobes of 6C 0905+39. We calculate the energy that its jet-ejected plasma has dumped into its surroundings in the last 3 X 10^7 years and discuss the impact that similar, or even more extreme, examples of spent, radio-quiet lobes would have on their surroundings. Interestingly, there is an indication that the emission from the hotspots is softer than the rest of the extended emission and the core, implying it is due to synchrotron emission. We confirm our previous detection of the low-energy turnover in the eastern hotspot of 6C 0905+39.
description: 7 pages, 7 figures, accepted by MNRAS
A boundary-aware point clustering approach in Euclidean and embedding spaces for roof plane segmentation
Creators: name: Li, Li
name: Li, Qingqing
name: Xu, Guozheng
name: Zhou, Pengwei
name: Tu, Jingmin
name: Li, Jie
name: Li, Mingming
name: Yao, Jian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Roof plane segmentation from airborne LiDAR point clouds is an important technology for 3D building model reconstruction. One of the key issues of plane segmentation is how to design powerful features that can exactly distinguish adjacent planar patches. The quality of point feature directly determines the accuracy of roof plane segmentation. Most of existing approaches use handcrafted features to extract roof planes. However, the abilities of these features are relatively low, especially in boundary area. To solve this problem, we propose a boundary-aware point clustering approach in Euclidean and embedding spaces constructed by a multi-task deep network for roof plane segmentation. We design a three-branch network to predict semantic labels, point offsets and extract deep embedding features. In the first branch, we classify the input data as non-roof, boundary and plane points. In the second branch, we predict point offsets for shifting each point toward its respective instance center. In the third branch, we constrain that points of the same plane instance should have the similar embeddings. We aim to ensure that points of the same plane instance are close as much as possible in both Euclidean and embedding spaces. However, although deep network has strong feature representative ability, it is still hard to accurately distinguish points near plane instance boundary. Therefore, we first group plane points into many clusters in the two spaces, and then we assign the rest boundary points to their closest clusters to generate final complete roof planes. In this way, we can effectively reduce the influence of unreliable boundary points. In addition, we prepare a synthetic dataset and two real datasets to train and evaluate our approach. The experiments results show that the proposed approach significantly outperforms the existing state-of-the-art approaches.
Galactic Warp in the overdensity of the Canis Major Region
Creators: name: Lopez-Corredoira, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Bellazzini et al. (2006b) claim that Lopez-Corredoira et al.'s (2002) warp model is totally unable to reproduce the Canis Major structure in the red clump stars. However, slight variations in the azimuth of the Lopez-Corredoira et al. (2002) warp model, justified by the uncertainties in the parameter as well as the local irregularities with respect to the average model, derive a result much closer to the observations of the overdensity south/north. The bump of red clump stars with m_K=13-13.5 around l=241 deg., b=-8.5 deg. and the depth of the Canis Major structure are also explainable in terms of the warp with an appropriate extrapolation of constant height between galactocentric radii of 13 and 16 kpc, as observed roughly in the southern warp, instead of a monotonically increasing height like the northern warp; and the observed velocity distribution of stars cannot exclude the warp possibility. A warp model is therefore still a possible explanation of the Canis Major overdensity, and the hypothesis of the existence of a dwarf galaxy is unnecessary, although still a possibility too.
description: 6 pages, 3 figures, accepted to be published in MNRAS
Large-scale holographic particle 3D imaging with the beam propagation model
Creators: name: Wang, Hao
name: Tahir, Waleed
name: Zhu, Jiabei
name: Tian, Lei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We develop a novel algorithm for large-scale holographic reconstruction of 3D particle fields. Our method is based on a multiple-scattering beam propagation method (BPM) combined with sparse regularization that enables recovering dense 3D particles of high refractive index contrast from a single hologram. We show that the BPM-computed hologram generates intensity statistics closely matching with the experimental measurements and provides up to 9$\times$ higher accuracy than the single-scattering model. To solve the inverse problem, we devise a computationally efficient algorithm, which reduces the computation time by two orders of magnitude as compared to the state-of-the-art multiple-scattering-based technique. We demonstrate superior reconstruction accuracy in both simulations and experiments under different scattering strengths. We show that the BPM reconstruction significantly outperforms the single-scattering method in particular for deep imaging depths and high particle densities.
description: 13 pages, 8 figures, submitted to "Optics Express", 2 pages supplementary material The update file is used to correct typos, discuss more details in the paper
Generation of orthogonal rational functions by procedures for structured matrices
Creators: name: Van Buggenhout, Niel
name: Van Barel, Marc
name: Vandebril, Raf
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 15A22, 47A75, 47A07, 65F18, 65Q30, 33C45

description: The problem of computing recurrence coefficients of sequences of rational functions orthogonal with respect to a discrete inner product is formulated as an inverse eigenvalue problem for a pencil of Hessenberg matrices. Two procedures are proposed to solve this inverse eigenvalue problem, via the rational Arnoldi iteration and via an updating procedure using unitary similarity transformations. The latter is shown to be numerically stable. This problem and both procedures are generalized by considering biorthogonal rational functions with respect to a bilinear form. This leads to an inverse eigenvalue problem for a pencil of tridiagonal matrices. A tridiagonal pencil implies short recurrence relations for the biorthogonal rational functions, which is more efficient than the orthogonal case. However the procedures solving this problem must rely on nonunitary operations and might not be numerically stable.
description: 31 pages, 5 figures; Published online in Numerical Algorithms
Enhancing the Reliability of Federated Inference: From Bias Mitigation to Model Calibration
Creators: name: Chu, Yun-Wei
Publisher: name: Purdue University Graduate School
Year: 2025
Subjects: classificationCode: 461199
subject: Machine learning not elsewhere classified
classificationCode: 460207
subject: Modelling and simulation
classificationCode: 460206
subject: Knowledge representation and reasoning

description: The increasing prevalence of decentralized data in real-world applications, characterized by natural distributions and clustered patterns, has amplified the need for distributed machine learning techniques. This thesis delves into the challenges and opportunities of developing innovative distributed solutions, focusing on real-world applications in social network scenarios, such as student modeling and natural language processing.
This thesis first investigates the limitations of traditional centralized machine learning, which often generalizes poorly to underrepresented patterns due to biases in data availability. Motivated by Federated Learning (FL), we propose a personalized distributed machine learning framework to model student behavior and generate fair predictions based on distinct demographic attributes, addressing biases inherent in education data. Next, we tackle communication constraints--a fundamental challenge in distributed systems, particularly when applying large language models for natural language tasks. We focus on federated multilingual translation, developing an efficient communication method that selectively exchanges only crucial parameters during FL rounds, significantly reducing overhead while maintaining performance.
Building upon these applications, we explore broader challenges in FL -- model initialization and reliability -- which remain under-explored. Unlike centralized approaches, FL often suffers from limited performance gains and imbalanced predictions across distributed participants when initialized with pre-trained models, raising fairness concerns. To address this, we propose a meta-learning-based pre-training strategy that delivers robust and fair initialization across heterogeneous FL tasks. Finally, we examine model calibration in FL, an essential aspect for confidence alignment and decision reliability. We introduce a similarity-based calibration method that seamlessly adapts to diverse FL algorithms, enhancing both performance and model calibration.
In conclusion, this thesis highlights the importance of fairness, efficiency, and reliability in distributed machine learning, offering novel solutions to key challenges and advancing the applicability of distributed machine learning across various domains.
zio-test and diffx integration
Creators: name: Barker, Brandon Elam
Publisher: name: Zenodo
Year: 2021
Subjects: Scala
ZIO
Software
Software Testing

description: A tiny library for zio-test and diffx integration. Check it out if you use one and want to use the other as well. However, it is small enough you may just want to drop the code into your project. Primary address Secondary address
Rancheri Allotment
Creators: name: Girado, Luther
name: Hammond, Jon
name: Hernandez, Betty
name: Hicks, Lucille
name: Grant, Laura
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: xaw

description: This recording contains a discussion of the drive to Rancheri and the individuals who lived there. 35:55 minutes into the recording, the speakers arrive at the Rancheri cemetery and say a prayer for those who lay there.
Large cone angle magnetization precession of an individual nanomagnet with dc electrical detection
Creators: name: Costache, M. V.
name: Watts, S. M.
name: Sladkov, M.
name: van der Wal, C. H.
name: van Wees, B. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate on-chip resonant driving of large cone-angle magnetization precession of an individual nanoscale permalloy element. Strong driving is realized by locating the element in close proximity to the shorted end of a coplanar strip waveguide, which generates a microwave magnetic field. We used a microwave frequency modulation method to accurately measure resonant changes of the dc anisotropic magnetoresistance. Precession cone angles up to $9^{0}$ are determined with better than one degree of resolution. The resonance peak shape is well-described by the Landau-Lifshitz-Gilbert equation.
Representation Synthesis by Probabilistic Many-Valued Logic Operation in Self-Supervised Learning
Creators: name: Nakamura, Hiroki
name: Okada, Masashi
name: Taniguchi, Tadahiro
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In this paper, we propose a new self-supervised learning (SSL) method for representations that enable logic operations. Representation learning has been applied to various tasks, such as image generation and retrieval. The logical controllability of representations is important for these tasks. Although some methods have been shown to enable the intuitive control of representations using natural languages as the inputs, representation control via logic operations between representations has not been demonstrated. Some SSL methods using representation synthesis (e.g., elementwise mean and maximum operations) have been proposed, but the operations performed in these methods do not incorporate logic operations. In this work, we propose a logic-operable self-supervised representation learning method by replacing the existing representation synthesis with the OR operation on the probabilistic extension of many-valued logic. The representations comprise a set of feature-possession degrees, which are truth values indicating the presence or absence of each feature in the image, and realize the logic operations (e.g., OR and AND). Our method can generate a representation that has the features of both representations or only those features common to both representations. In addition, the expression of the ambiguous presence of a feature is realized by indicating the feature-possession degree by the probability distribution of truth values of the many-valued logic. We showed that our method performs competitively in single and multi-label classification tasks compared with prior SSL methods using synthetic representations. Moreover, experiments on image retrieval using MNIST and PascalVOC showed that the representations of our method can be operated by OR and AND operations.
description: Accepted to the IEEE Open Journal of Signal Processing (ICIP2024 track)
Uncertainty-Aware Probabilistic Graph Neural Networks for Road-Level Traffic Accident Prediction
Creators: name: Gao, Xiaowei
name: Jiang, Xinke
name: Zhuang, Dingyi
name: Chen, Huanfa
name: Wang, Shenhao
name: Law, Stephen
name: Haworth, James
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Traffic accidents present substantial challenges to human safety and socio-economic development in urban areas. Developing a reliable and responsible traffic accident prediction model is crucial to addressing growing public safety concerns and enhancing the safety of urban mobility systems. Traditional methods face limitations at fine spatiotemporal scales due to the sporadic nature of highrisk accidents and the predominance of non-accident characteristics. Furthermore, while most current models show promising occurrence prediction, they overlook the uncertainties arising from the inherent nature of accidents, and then fail to adequately map the hierarchical ranking of accident risk values for more precise insights. To address these issues, we introduce the Spatiotemporal Zero-Inflated Tweedie Graph Neural Network STZITDGNN -- the first uncertainty-aware probabilistic graph deep learning model in roadlevel traffic accident prediction for multisteps. This model integrates the interpretability of the statistical Tweedie family model and the expressive power of graph neural networks. Its decoder innovatively employs a compound Tweedie model,a Poisson distribution to model the frequency of accident occurrences and a Gamma distribution to assess injury severity, supplemented by a zeroinflated component to effectively identify exessive nonincident instances. Empirical tests using realworld traffic data from London, UK, demonstrate that the STZITDGNN surpasses other baseline models across multiple benchmarks and metrics, including accident risk value prediction, uncertainty minimisation, non-accident road identification and accident occurrence accuracy. Our study demonstrates that STZTIDGNN can effectively inform targeted road monitoring, thereby improving urban road safety strategies.
Luminosity Function of Faint Globular Clusters in M87
Creators: name: Waters, Christopher Z.
name: Zepf, Stephen E.
name: Lauer, Tod R.
name: Baltz, Edward A.
name: Silk, Joseph
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the luminosity function to very faint magnitudes for the globular clusters in M87, based on a 30 orbit \textit{Hubble Space Telescope (HST)} WFPC2 imaging program. The very deep images and corresponding improved false source rejection allow us to probe the mass function further beyond the turnover than has been done before. We compare our luminosity function to those that have been observed in the past, and confirm the similarity of the turnover luminosity between M87 and the Milky Way. We also find with high statistical significance that the M87 luminosity function is broader than that of the Milky Way. We discuss how determining the mass function of the cluster system to low masses can constrain theoretical models of the dynamical evolution of globular cluster systems. Our mass function is consistent with the dependence of mass loss on the initial cluster mass given by classical evaporation, and somewhat inconsistent with newer proposals that have a shallower mass dependence. In addition, the rate of mass loss is consistent with standard evaporation models, and not with the much higher rates proposed by some recent studies of very young cluster systems. We also find that the mass-size relation has very little slope, indicating that there is almost no increase in the size of a cluster with increasing mass.
description: 22 pages, 5 figures, Accepted for publication in ApJ
Observations of the long-lasting activity of the distant Comets 29P Schwassmann-Wachmann 1, C/2003 WT42 (LINEAR) and C/2002 VQ94 (LINEAR)
Creators: name: Ivanova, Oleksandra
name: Skorov, Yury
name: Korsun, Pavlo
name: Afanasiev, Viktor
name: Blum, Jürgen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We investigated three comets, which are active at large heliocentric distances, using observations obtained at the 6-m BTA telescope (SAO RAS, Russia) in the photometric mode of the focal reducer SCORPIO. The three comets, 29P/Schwassmann-Wachmann 1, C/2003 WT42 (LINEAR), and C/2002 VQ94 (LINEAR), were observed after their perihelion passages at heliocentric distances between 5.5 and 7.08 AU. The dust production rates in terms of Afrho was measured for these comets. Using the retrieved values, an average dust production rate was derived under different model assumptions. A tentative calculation of the total mass loss of the comet nucleus within a certain observation period was executed. We calculated the corresponding thickness of the depleted uppermost layer where high-volatile ices completely sublimated. The results obtained in our study strongly support the idea that the observed activity of Comet SW1 requires a permanent demolition of the upper surface layers.
description: 9 pages, 4 figures, 2 tables
Shell model analysis of the $ B(E2,2^+ \rightarrow 0^+)$'s in the A=70 T=1 triplet
Creators: name: Lenzi, S. M.
name: Poves, A.
name: Macchiavelli, A. O.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: he $B(E2,2^+ \rightarrow 0^+)$ transition strengths of the T=1 isobaric triplet $^{70}$Kr, $^{70}$Br, $^{70}$Se, recently measured at RIKEN/RIBF, are discussed in terms of state of the art large scale shell model calculations using the JUN45 and JUN45+LNPS plus Coulomb interactions. In this letter we argue that, depending on the effective charges used, the calculations are either in line with the experimental data within statistical uncertainties, or the anomaly happens in $^{70}$Br, rather than $^{70}$Kr. In the latter case, we suggest that it can be due to the presence of a hitherto undetected 1$^+$ T=0 state below the yrast 2$^+$ T=1 state. Our results do not support a shape change of $^{70}$Kr with respect to the other members of the isobaric multiplet.
description: 4 pages, 3 figures. To be submitted to Phys. Rev. C
Self-diagnostic polymers : inline detection of thermal degradation of unsaturated poly(ester imide)s
Creators: name: Funtan, Alexander
name: Michael, Philipp
name: Rost, Simon
name: Omeis, Jürgen
name: Lienert, Klaus
name: Binder, Wolfgang H.
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2021
Subjects: subject: 540

description: Monitoring polymer degradation is an important quest, particularly relevant for industry. Although many indirect methodologies for assessing polymer degradation exist, only few are applicable for an inline-monitoring via optic detection-systems. An inline-monitoring system is introduced for the thermal degradation of crosslinked poly(ester imide)s (PEIs) by embedding trifluoroacetyl functionalized stilbene molecules, serving as chemosensors to track the release of generated alcoholic byproducts. Nucleophilic addition of an alcohol to the sensors trifluoroacetyl functionality triggers hemiacetal formation which is accompanied by significant changes in optical properties, in turn allowing monitoring of sensor activation by direct spectroscopy. Fluorescence spectroscopy offers an easy detection tool for the inline thermal monitoring of PEI-degradation.
WEBINAR: Launching the new Apollo Service: collaborative genome annotation for Australian researchers
Creators: name: Nelson, Tiffanie
name: Rane, Rahul
name: Degnan, Sandie
name: Degnan, Bernie
name: Voelker, Julia
Publisher: name: Zenodo
Year: 2021
Subjects: subject: Genome Annotation
subject: Genomics
subject: Genome curation
subject: Bioinformatics
subject: FOS: Computer and information sciences
subject: Apollo software
subject: http://edamontology.org/operation_0362
subject: http://edamontology.org/topic_0622
subject: http://edamontology.org/topic_0091

description: This record includes training materials associated with the Australian BioCommons webinar ‘Launching the new Apollo Service: collaborative genome annotation for Australian researchers’. This webinar/workshop took place on 29 September 2021. Event description  Genome annotation is crucial to defining the function of genomic sequences. Apollo is a popular tool for facilitating real-time collaborative curation and genome annotation editing. The technical obstacles faced by Australian researchers wanting to access and maintain this software have now been solved. The new Australian Apollo Service can host your genome assembly and supporting evidence files, taking care of all the system administration so you and your team can focus on the annotation curation itself. The Australian BioCommons and partners at QCIF and Pawsey are now offering the Apollo Service free to use for Australian-based research groups and research consortia. As part of this launch, you’ll hear what’s possible from some of the early adopters who helped guide the development of the service. These Australian researchers will highlight the benefits that Apollo is bringing to their genome annotation and curation workflows. Join us to find out how you can get access to the Australian Apollo Service. Materials are shared under a Creative Commons Attribution 4.0 International agreement unless otherwise specified and were current at the time of the event. Files and materials included in this record: Event metadata (PDF): Information about the event including, description, event URL, learning objectives, prerequisites, technical requirements etc. Index of training materials (PDF): List and description of all materials associated with this event including the name, format, location and a brief description of each file. Degnan Lab - Apollo Launch Webinar (PDF): Slides presented by Professors Sandie and Bernie Degnan Nelson - Apollo Launch Webinar (PDF): Slides presented by Dr Tiffanie Nelson Voelker - Apollo Launch Webinar (PDF): Slides presented by Julia Voelker Rane - Apollo Launch Webinar (PDF): Slides presented by Dr Rahul Rane. Materials shared elsewhere: A recording of this webinar is available on the Australian BioCommons YouTube Channel: https://youtu.be/o8jhRra-x4Y
Bijections for Baxter Families and Related Objects
Creators: name: Felsner, Stefan
name: Fusy, Éric
name: Noy, Marc
name: Orden, David
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A15, 05A16, 05C10, 05C78

description: The Baxter number can be written as $B_n = \sum_0^n Θ_{k,n-k-1}$. These numbers have first appeared in the enumeration of so-called Baxter permutations; $B_n$ is the number of Baxter permutations of size $n$, and $Θ_{k,l}$ is the number of Baxter permutations with $k$ descents and $l$ rises. With a series of bijections we identify several families of combinatorial objects counted by the numbers $Θ_{k,l}$. Apart from Baxter permutations, these include plane bipolar orientations with $k+2$ vertices and $l+2$ faces, 2-orientations of planar quadrangulations with $k+2$ white and $l+2$ black vertices, certain pairs of binary trees with $k+1$ left and $l+1$ right leaves, and a family of triples of non-intersecting lattice paths. This last family allows us to determine the value of $Θ_{k,l}$ as an application of the lemma of Gessel and Viennot. The approach also allows us to count certain other subfamilies, e.g., alternating Baxter permutations, objects with symmetries and, via a bijection with a class of plan bipolar orientations also Schnyder woods of triangulations, which are known to be in bijection with 3-orientations.
description: 31 pages, 22 figures, submitted to JCTA
Extinction techniques and impact on dust property determination
Creators: name: Froebrich, Dirk
name: del Burgo, Carlos
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The near infrared extinction powerlaw index ($β$) and its uncertainty is derived from three different techniques based on star counts, colour excess and a combination of them. We have applied these methods to 2MASS data to determine maps of $β$ and near infrared extinction of the small cloud IC 1396 W. The combination of star counts and colour excess results in the most reliable method to determine $β$. It is found that the use of the correct $β$-map to transform colour excess values into extinction is fundamental for column density profile analysis of clouds. We describe how artificial photometric data, based on the model of stellar population synthesis of the Galaxy (Robin et al. 2003), can be used to estimate uncertainties and derive systematic effects of the extinction methods presented here. We find that all colour excess based extinction determination methods are subject to small but systematic offsets, which do not affect the star counting technique. These offsets occur since stars seen through a cloud do not represent the same population as stars in an extinction free control field.
description: 10 pages, 9 figures, 1 table, accepted for publication in MNRAS
1 Brief an H[ans] G[eorg] Nägeli
Brief an Nägeli ...
Creators: name: Schnyder von Wartensee, Franz Xaver
Publisher: name: [s.n.]
Year: 1823

description: von [Franz Xaver] Schnyder [von Wartensee]
description: Abschrift von Hermann Nägeli; nur Jahr vorhanden, vermuteter Monat von späterer Hand mit Bleistift ergänzt
57Fe and 151Eu Mössbauer studies of 3d-4f spin interplay in EuFe(2-x)Ni(x)As2
Creators: name: Komedera, K.
name: Gatlik, J.
name: Blachowski, A.
name: Zukrowski, J.
name: Rybicki, D.
name: Delekta, A.
name: Babij, M.
name: Bukowski, Z.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The EuFe(2-x)Ni(x)As2 compounds exhibiting 3d and/or 4f magnetic order were investigated by means of 57Fe and 151Eu Mössbauer spectroscopy. Additionally, results for the end members of this system, i.e. EuFe2As2 and EuNi2As2, are reported for comparison. It was found that spin-density-wave order of the Fe itinerant moments is monotonically suppressed by Ni-substitution. However, the 3d magnetic order survives at the lowest temperature up to at least x = 0.12 and it is certainly completely suppressed for x = 0.20. The Eu localized moments order regardless of the Ni concentration, but undergo a spin reorientation with increasing x from the alignment parallel to the a-axis in the parent compound, toward c-axis alignment for x > 0.07. The change of the 4f spins ordering from antiferromagnetic to ferromagnetic takes place simultaneously with a disappearance of the 3d spins order what is the evidence of a strong coupling between magnetism of Eu2+ ions and the conduction electrons of [Fe(2-x)Ni(x)As2]2- layers. The Fe nuclei experience the transferred hyperfine magnetic field due to the Eu2+ ordering for Ni-substituted samples with x > 0.04, while the transferred field is undetectable in EuFe2As2 and for compound with a low Ni-substitution level. It seems that the 4f ferromagnetic component arising from a tilt of the Eu2+ moments to the crystallographic c-axis leads to the transferred magnetic field at the Fe atoms.
Parameter free Hubble constant from the quadruply lensed quasar SDSS J1004 + 4112
Creators: name: Martínez-Arrizabalaga, J.
name: Diego, J. M.
name: Goicoechea, L. J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a free-form lens model for the multiply lensed quasar in the galaxy cluster SDSS J$1004+4112$. Our lens model makes minimal assumptions about the distribution of mass in the lens plane. We pay particular attention to the model uncertainties on the predicted time delay, originating from the particular configuration of model variables. Taking into account this uncertainty, we obtain a value of the Hubble constant of $H_0= 74^{+9}_{-13}$km s$^{-1}$ Mpc$^{-1}$, consistent with independent recent estimates. The predicted time delay between the central image E and image C (the first to arrive), is $ΔT_{E-C}=3200\pm 200$ days. Future measurements of $ΔT_{E-C}$ will allow to impose a tighter constrain on $H_0$ from this cluster-QSO system.
description: 5 pages, 5 figures
title: Youth detention population in Australia 2021
Creators: name: Australian Institute of Health and Welfare
Publisher: name: Australian Institute of Health and Welfare
Year: 2021

description: This report presents information on the youth detention population in Australia from June 2017 to June 2021. Among the 819 young people in detention on an average night in the June quarter 2021, most were male (91%), aged 10–17 (83%) and unsentenced (72%). Half (50%) were Aboriginal and Torres Strait Islander. Over the 4-year period, the numbers fluctuated across quarters, decreasing overall, from 958 in the June quarter 2017.
Maximal couplings in PT-symmetric chain-models with the real spectrum of energies
Creators: name: Znojil, Miloslav
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81Q10; 13P10; 14J81; 14M12; 46C20; 47B50

description: The domain ${\cal D}$ of all the coupling strengths compatible with the reality of the energies is studied for a family of non-Hermitian $N$ by $N$ matrix Hamiltonians $H^{(N)}$ with tridiagonal and ${\cal PT}-$symmetric structure. At all dimensions $N$, the coordinates are found of the extremal points at which the boundary hypersurface $\partial {\cal D}$ touches the circumscribed sphere (for odd $N=2M+1$) or ellipsoid (for even $N=2K$).
description: 18 pp., 2 figs
Conversations in Car II (B-roll)
Creators: name: Hammond, Jon
name: Hernandez, Betty
name: Hicks, Lucille
name: Grant, Laura
name: Turner, Julie
name: Everson, Merlene
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: xaw

description: This recording consists of the speakers recapping recent familial updates and weekly events, as well as a discussion of the landscapes seen while in the car.
Lectura super librum III Sententiarum
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1433

description: Öffentliche Bibliothek der Universität Basel
description: Lateinisch
description: Die Hs. ist aufgrund der Wasserzeichen ungefähr auf die Mitte des 15. Jahrhunderts zu datieren. Die Hs. UB Basel, A V 35 aus der Basler Predigerbibliothek enthält den entsprechenden anonymen Kommentar zu den Bücher I und II der Sentenzen des Petrus Lombardus, geschrieben auf gleich aufgebauten Lagen (aussen und innen jeweils Pergamentbögen) mit demselben Papier (gleiches Wasserzeichen) wie dieser Band, der selbst keine Hinweise auf seine Provenienz enthält. Im vorderen Spiegel findet sich quer am unteren Rand eine fragmentarische Bücherliste und eine Signatur: D 36.
description: Verzeichnung=Description=Inventaire Jan. 2010 Titel, Jahr und Signatur nach: Binz, unpublizierte Beschreibung
description: Verzeichnung=Description=Inventaire März 2015 HAN-Katalogisierungsregeln Minimalaufnahme nach: NN, unpublizierte Beschreibung
description: Verzeichnung=Description=Inventaire Nov. 2024 Ergänzungen nach Autopsie Mangold
description: Digitalisierung=Digitization=Numérisation Nov. 2024 TIFF
description: Erschliessungsniveau Minimalniveau
description: UB Basel, A V 35
A study of the theory of appraisal for selection
Creators: name: Turner, Jane
Publisher: name: University of British Columbia
Year: 2008

description: Appraisal for selection is a vital archival function that demarcates knowledge of our past and influences our ability to form our future. Present archival theory, however, includes a profusion of conflicting and ambiguous criteria and terminology that correspond to the imprecise conceptualization of the Appraisal issues involved. The central problem of appraisal is how to mitigate the distortion in the documentary heritage of society that is caused by the subjective process of apportioning value to records. This thesis evaluates international appraisal theory in western continental Europe, Britain, United States and Canada through a study of existing literature that explains appraisal ideas and discusses their practical application. It identifies areas of contradiction and generally accepted principles of appraisal. The study then builds on the strengths of international traditions of appraisal by focussing on three theoretically coherent principles that can guide appraisal for selection: the principle of impartiality, the principle of provenance, and the principle of contemporary value.
Deep Mixing of He-3: Reconciling Big Bang and Stellar Nucleosynthesis
Creators: name: Eggleton, Peter P
name: Dearborn, David S P
name: Lattanzio, John C
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Low-mass stars, ~1-2 solar masses, near the Main Sequence are efficient at producing He-3, which they mix into the convective envelope on the giant branch and should distribute into the Galaxy by way of envelope loss. This process is so efficient that it is difficult to reconcile the low observed cosmic abundance of He-3 with the predictions of both stellar and Big Bang nucleosynthesis. In this paper we find, by modeling a red giant with a fully three-dimensional hydrodynamic code and a full nucleosynthetic network, that mixing arises in the supposedly stable and radiative zone between the hydrogen-burning shell and the base of the convective envelope. This mixing is due to Rayleigh-Taylor instability within a zone just above the hydrogen-burning shell, where a nuclear reaction lowers the mean molecular weight slightly. Thus we are able to remove the threat that He-3 production in low-mass stars poses to the Big Bang nucleosynthesis of He-3.
description: Accepted by Science, and available from Science Express online
Non-Hermitian band topology with generalized inversion symmetry
Creators: name: Okugawa, Ryo
name: Takahashi, Ryo
name: Yokomizo, Kazuki
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Non-Hermitian skin effects and exceptional points are topological phenomena characterized by integer winding numbers. In this study, we give methods to theoretically detect skin effects and exceptional points by generalizing inversion symmetry. The generalization of inversion symmetry is unique to non-Hermitian systems. We show that parities of the winding numbers can be determined from energy eigenvalues on the inversion-invariant momenta when generalized inversion symmetry is present. The simple expressions for the winding numbers allow us to easily analyze skin effects and exceptional points in non-Hermitian bands. We also demonstrate the methods for (second-order) skin effects and exceptional points by using lattice models.
description: 12 pages, 7 figures
DeepRepViz: Identifying Confounders in Deep Learning Model Predictions
Creators: name: Rane, Roshan Prakash
name: Kim, JiHoon
name: Umesha, Arjun
name: Stark, Didem
name: Schulz, Marc-André
name: Ritter, Kerstin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Deep Learning (DL) models have gained popularity in neuroimaging studies for predicting psychological behaviors, cognitive traits, and brain pathologies. However, these models can be biased by confounders such as age, sex, or imaging artifacts from the acquisition process. To address this, we introduce 'DeepRepViz', a two-part framework designed to identify confounders in DL model predictions. The first component is a visualization tool that can be used to qualitatively examine the final latent representation of the DL model. The second component is a metric called 'Con-score' that quantifies the confounder risk associated with a variable, using the final latent representation of the DL model. We demonstrate the effectiveness of the Con-score using a simple simulated setup by iteratively altering the strength of a simulated confounder and observing the corresponding change in the Con-score. Next, we validate the DeepRepViz framework on a large-scale neuroimaging dataset (n=12000) by performing three MRI-phenotype prediction tasks that include (a) predicting chronic alcohol users, (b) classifying participant sex, and (c) predicting performance speed on a cognitive task called 'trail making'. DeepRepViz identifies sex as a significant confounder in the DL model predicting chronic alcohol users (Con-score=0.35) and age as a confounder in the model predicting cognitive task performance (Con-score=0.3). In conclusion, the DeepRepViz framework provides a systematic approach to test for potential confounders such as age, sex, and imaging artifacts and improves the transparency of DL models for neuroimaging studies.
CMB birefringence from ultra-light axion string networks
Creators: name: Jain, Mudit
name: Long, Andrew J.
name: Amin, Mustafa A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The polarization of Cosmic Microwave Background (CMB) photons is rotated as they pass through (ultralight-) axion string loops. Studying this birefringence can reveal valuable information about the axion-photon coupling and the structure of the string network. We develop an approximate analytic formalism and identify a kernel function that can be used to calculate the two-point correlation function for CMB birefringence induced by an arbitrary axion string network. Using this formalism, we evaluate the birefringence signal for some simple loop distributions (including scaling and network collapse). We find that the angular correlation function has a characteristic angular scale set by $θ_\mathrm{min}$, which corresponds to the angular extent of the loops at the time of recombination. This results in a peak in the birefringence power spectrum around $\ell_p \sim 1/θ_\mathrm{min}$. An additional scale, controlled by the axion's mass, is introduced if the network collapses before today.
description: 31 pages + appendices; 9 figures. v2: updated towards the version published in JCAP (added limits from ACTPol n SPTPol in power spectrum figures; added more references)
Mesoscopic to universal crossover of transmission phase of multi-level quantum dots
Creators: name: Karrasch, C.
name: Hecht, T.
name: Weichselbaum, A.
name: Oreg, Y.
name: von Delft, J.
name: Meden, V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Transmission phase αmeasurements of many-electron quantum dots (small mean level spacing δ) revealed universal phase lapses by πbetween consecutive resonances. In contrast, for dots with only a few electrons (large δ), the appearance or not of a phase lapse depends on the dot parameters. We show that a model of a multi-level quantum dot with local Coulomb interactions and arbitrary level-lead couplings reproduces the generic features of the observed behavior. The universal behavior of αfor small δfollows from Fano-type antiresonances of the renormalized single-particle levels.
description: 4 pages, version accepted for publication in PRL
On the Supremum of Random Dirichlet Polynomials
Creators: name: Lifshits, Mikhail
name: Weber, Michel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 30B50,26D05

description: We study the supremum of some random Dirichlet polynomials and obtain sharp upper and lower bounds for supremum expectation that extend the optimal estimate of Halász-Queffélec and enable to cunstruct random polynomials with unusually small maxima. Our approach in proving these results is entirely based on methods of stochastic processes, in particular the metric entropy method.