cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
BioExcel Webinar #79: PDBe resources to help with starting model selection for molecular dynamics simulations
Creators: name: Ganguly, Sudakshina
Publisher: name: Zenodo
Year: 2024
Subjects: webinar

description: Selecting the appropriate macromolecular structure as the initial model is crucial for the success of a molecular dynamics (MD) simulation. The Protein Data Bank (PDB) is one of the largest repositories of experimentally determined biomolecular 3D structures, and often contains multiple structures for the same protein. There may also be fewer structures for some proteins making the selection of an initial model challenging.

PDBe and PDBe-KB provide a suite of tools and resources to assist users in searching for, finding, and evaluating the quality of their structure of interest. Familiarity with these tools and resources could help you set up a robust and relevant molecular system for your MD simulation.

This webinar will explore these tools and resources, highlighting several key features:

PDBe and PBDe-KB resources: an integrated resource that aggregates functional annotations and structural data from the PDB and related databases. PDBe-KB provides a comprehensive overview of a protein, offering researchers detailed information about its structures, functions, and interactions, thus facilitating deeper insights into biomolecular mechanisms.

PDBe’s 3D-Beacons Network: a collaborative, open-source resource that offers unified programmatic access to experimentally determined and predicted structure models. Participants will learn how to leverage the 3D-Beacons Network to effectively compare and select between experimental and predicted models, facilitating an informed choice of the starting model for their simulations.

Validation report: an accessible report for each PDB entry which provides various metrics (clashscore, RMSZ, Ramachandran outliers, etc…) used to evaluate the structure quality. 

Molecular Dynamics Data Bank (MDDB): a new resource designed to store and share MD simulations, enhancing their findability, accessibility, interoperability, and reusability.

In brief, you will learn where to find structures, search for them, evaluate them, and annotate them (as a bonus section).
A New 2.5D Representation for Lymph Node Detection using Random Sets of Deep Convolutional Neural Network Observations
Creators: name: Roth, Holger R.
name: Lu, Le
name: Seff, Ari
name: Cherry, Kevin M.
name: Hoffman, Joanne
name: Wang, Shijun
name: Liu, Jiamin
name: Turkbey, Evrim
name: Summers, Ronald M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Automated Lymph Node (LN) detection is an important clinical diagnostic task but very challenging due to the low contrast of surrounding structures in Computed Tomography (CT) and to their varying sizes, poses, shapes and sparsely distributed locations. State-of-the-art studies show the performance range of 52.9% sensitivity at 3.1 false-positives per volume (FP/vol.), or 60.9% at 6.1 FP/vol. for mediastinal LN, by one-shot boosting on 3D HAAR features. In this paper, we first operate a preliminary candidate generation stage, towards 100% sensitivity at the cost of high FP levels (40 per patient), to harvest volumes of interest (VOI). Our 2.5D approach consequently decomposes any 3D VOI by resampling 2D reformatted orthogonal views N times, via scale, random translations, and rotations with respect to the VOI centroid coordinates. These random views are then used to train a deep Convolutional Neural Network (CNN) classifier. In testing, the CNN is employed to assign LN probabilities for all N random views that can be simply averaged (as a set) to compute the final classification probability per VOI. We validate the approach on two datasets: 90 CT volumes with 388 mediastinal LNs and 86 patients with 595 abdominal LNs. We achieve sensitivities of 70%/83% at 3 FP/vol. and 84%/90% at 6 FP/vol. in mediastinum and abdomen respectively, which drastically improves over the previous state-of-the-art work.
description: This article will be presented at MICCAI (Medical Image Computing and Computer-Assisted Interventions) 2014
The VAST Survey - IV. A wide brown dwarf companion to the A3V star $ζ$ Delphini
Creators: name: De Rosa, R. J.
name: Patience, J.
name: Ward-Duong, K.
name: Vigan, A.
name: Marois, C.
name: Song, I.
name: Macintosh, B.
name: Graham, J. R.
name: Doyon, R.
name: Bessell, M. S.
name: Lai, O.
name: McCarthy, D. W.
name: Kulesa, C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the discovery of a wide co-moving substellar companion to the nearby ($D=67.5\pm1.1$ pc) A3V star $ζ$ Delphini based on imaging and follow-up spectroscopic observations obtained during the course of our Volume-limited A-Star (VAST) multiplicity survey. $ζ$ Del was observed over a five-year baseline with adaptive optics, revealing the presence of a previously-unresolved companion with a proper motion consistent with that of the A-type primary. The age of the $ζ$ Del system was estimated as $525\pm125$ Myr based on the position of the primary on the colour-magnitude and temperature-luminosity diagrams. Using intermediate-resolution near-infrared spectroscopy, the spectrum of $ζ$ Del B is shown to be consistent with a mid-L dwarf (L$5\pm2$), at a temperature of $1650\pm200$ K. Combining the measured near-infrared magnitude of $ζ$ Del B with the estimated temperature leads to a model-dependent mass estimate of $50\pm15$ M$_{\rm Jup}$, corresponding to a mass ratio of $q=0.019\pm0.006$. At a projected separation of $910\pm14$ au, $ζ$ Del B is among the most widely-separated and extreme-mass ratio substellar companions to a main-sequence star resolved to-date, providing a rare empirical constraint of the formation of low-mass ratio companions at extremely wide separations.
description: 12 pages, 11 figures, accepted for publication in the Monthly Notices of the Royal Astronomical Society, 2014 September 25. Revised to incorporate typographical errors noted during the proofing process
Brief an Unbekannt
Creators: name: Bernoulli, Daniel
Publisher: name: [s.n.]
Year: 1734

description: Daniel Bernoulli erbittet über die UB Basel Auskünfte über russische Münzen und Wechselkurse Rubel/Unze Silber/Taler.
description: von Daniel I Bernoulli
description: Öffentliche Bibliothek der Universität Basel
description: Lateinisch
description: Datenimport aus LIDOS / Bernoulli (2004-07-02)
description: Digitalisierung=Digitization=Numérisation Oktober 2022 TIFF
On a general concept of multifractality: Multifractal spectra for dimensions, entropies, and Lyapunov exponents. Multifractal rigidity
Creators: name: Barreira, Luis
name: Pesin, Yakov
name: Schmeling, Jörg
Publisher: name: Weierstrass Institute
Year: 1996
Subjects: subject: Conformal repeller
subject: Gibbs measure
subject: local entropy
subject: Lyapunov exponents
subject: multifractal analysis
subject: multifractal rigidity
subject: pointwise dimension
subject: 58Fll
subject: 58F12
subject: 28D99
subject: 28C99

description: We introduce the mathematical concept of multifracfality and describe various multifractal spectra for dynamical systems, including spectra for dimensions and spectra for entropies. We support the study by providing some physical motivation and describing several non-trivial examples. Among them are subshifts of finite type and one-dimensional Markov maps. An essential part of the paper is devoted to the concept of multifractal rigidity. In particular, we use the multifractal spectra to obtain a "physical" classification of dynamical systems. For a class of Markov maps, we show that if the multifractal spectra for dimensions of two maps coincide, then the maps are differentiably equivalent.
Supplementary tables and figures from Selfish herd effects depend on prey crypsis
Creators: name: Piccolo, Hannah
name: Beresford, David
name: Hossie, Thomas J.
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 60801 Animal Behaviour

description: A series of tables and figures that provide additional insight into the predation data.
Beryllium monohydride (BeH): Where we are now, after 86 years of spectroscopy
Creators: name: Dattani, Nikesh S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: BeH is one of the most important benchmark systems for ab initio methods and for studying Born-Oppenheimer breakdown. However the best empirical potential and best ab initio potential for the ground electronic state to date give drastically different predictions in the long-range region beyond which measurements have been made, which is about \sim1000 cm^{-1} for ^{9} BeH, \sim3000 cm^{-1} for ^{9} BeD, and \sim13000 cm^{-1} for ^{9} BeT. Improved empirical potentials and Born-Oppenheimer breakdown corrections have now been built for the ground electronic states X(1^{2}Σ^{+}) of all three isotopologues. The predicted dissociation energy for ^{9} BeH from the new empirical potential is now closer to the current best ab initio prediction by more than 66% of the discrepancy between the latter and the previous best empirical potential. The previous best empirical potential predicted the existence of unobserved vibrational levels for all three isotopologues, and the current best ab initio study also predicted the existence of all of these levels, and four more. The present empirical potential agrees with the ab initio prediction of all of these extra levels not predicted by the earlier empirical potential. With one exception, all energy spacings between vibrational energy levels for which measurements have been made, are predicted with an agreement of better than 1 cm^{-1} between the new empirical potential and the current best ab initio potential, but some predictions for unobserved levels are still in great disagreement, and the equilibrium bond lengths are different by orders of magnitude.
description: Feedback encouraged. 9 Pages, 4 Figures, 4 Tables. The author thanks JSPS for financial support
Any set of irregular points has full Hausdorff dimension and full topological entropy
Creators: name: Barreira, Luis
name: Schmeling, Jörg
Publisher: name: Weierstrass Institute
Year: 1996
Subjects: subject: Birkhoff averages
subject: irregular points
subject: local entropies
subject: Lyapunov exponents
subject: pointwise dimensions
subject: 58F15
subject: 58F11

description: We prove, for subshifts of finite type, conformal repellers, and two-dimensional horseshoes, that the set of points where both the pointwise dimension, local entropy, Lyapunov exponents, and Birkhoff averages do not exist carries full topological entropy and full Hausdorff dimension. This follows from a much stronger statement formulated for a class of symbolic dynamical systems which includes subshifts with the specification property. Our proofs strongly rely on the multifractal analysis of dynamical systems and constitute the first mathematical application of this theory.
Brief an [Johann I Bernoulli]
Creators: name: Ostervald, Jean Frédéric
Publisher: name: [s.n.]
Year: 1716

description: Begleitnotiz zur Rücksendung einer (Rektorats-?) Rede von Bernoulli
description: von J[ean] F[rédéric] Osterwald
description: Joh. I B. nutzte das Blatt für verschiedene eigene Notizen zu Newton, zu einem holländischen Aufsatz und zu Haushaltsangelegenheiten.
description: Öffentliche Bibliothek der Universität Basel
description: Lateinisch
description: Datenimport aus LIDOS / Bernoulli (2004-07-02)
description: Digitalisierung=Digitization=Numérisation Oktober 2022 TIFF
Variational Reasoning over Incomplete Knowledge Graphs for Conversational Recommendation
Creators: name: Zhang, Xiaoyu
name: Xin, Xin
name: Li, Dongdong
name: Liu, Wenxuan
name: Ren, Pengjie
name: Chen, Zhumin
name: Ma, Jun
name: Ren, Zhaochun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Conversational recommender systems (CRSs) often utilize external knowledge graphs (KGs) to introduce rich semantic information and recommend relevant items through natural language dialogues. However, original KGs employed in existing CRSs are often incomplete and sparse, which limits the reasoning capability in recommendation. Moreover, only few of existing studies exploit the dialogue context to dynamically refine knowledge from KGs for better recommendation. To address the above issues, we propose the Variational Reasoning over Incomplete KGs Conversational Recommender (VRICR). Our key idea is to incorporate the large dialogue corpus naturally accompanied with CRSs to enhance the incomplete KGs; and perform dynamic knowledge reasoning conditioned on the dialogue context. Specifically, we denote the dialogue-specific subgraphs of KGs as latent variables with categorical priors for adaptive knowledge graphs refactor. We propose a variational Bayesian method to approximate posterior distributions over dialogue-specific subgraphs, which not only leverages the dialogue corpus for restructuring missing entity relations but also dynamically selects knowledge based on the dialogue context. Finally, we infuse the dialogue-specific subgraphs to decode the recommendation and responses. We conduct experiments on two benchmark CRSs datasets. Experimental results confirm the effectiveness of our proposed method.
Designing Information Systems to Support Habit Formation : From Theories to Design Principles
Creators: name: Chung, Alexander Quoc Huy
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2022
Subjects: Management Information Systems
Design Science Research
Design Principles
Persuasive Systems
Behaviour Change
Habit Formation

description: Sustaining behaviour change is fundamental for the effective uptake of policies and practices aimed at improving individual and collective health, yet it can be very difficult for individuals to adhere to new desired health-related behaviours. A prospective solution is to focus on instilling these behaviours as a habit. Once instilled as a habit, behaviours are performed automatically given specific cues, and they relieve the cognitive stress of having to make a volitional decision towards performing the behaviour - making it more resistant to relapse. Several information systems (IS) are being proposed to help individual users instil target behaviours as habits so that they can be performed even when intentions shift. However, these systems tend to be designed in an ad hoc manner and, as a result, their effectiveness can vary substantially. To better guide the design of information systems that can support users in forming health-related behaviours as a habit, we define a subclass of systems called Habit Formation Support Systems (HFSS) and adopt the design science research approach to develop two artifacts: (1) a design-relevant theory explaining and predicting how IS-supported habit formation can be achieved called the Theory for the Formation of IS-Supported Habits (T-FISSH); and (2) a suite of design principles to guide the design of systems that can effectively support users in forming a desired health-related behaviour as a habit. We contend that habit theory and IS continuance theory can be used to anchor the development of the two artifacts. The T-FISSH was refined and validated using exploratory and confirmatory focus groups with academics and health behaviour change practitioners respectively. The design principles were refined with systems design and development professionals and validated through a reusability check that involved a design activity and reusability questionnaire. The theoretical contribution of the thesis lies in moving the habit formation knowledge base into the design realm through the development of a design-relevant explanatory/predictive theory. From a practical perspective, this research presents a suite of theory-anchored design principles that are intended to guide the design and development of systems that can support users in forming desired health-related behaviours as a habit.
On the presence of ultra-fast outflows in the WAX sample of Seyfert galaxies
Creators: name: Tombesi, Francesco
name: Cappi, Massimo
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The study of winds in active galactic nuclei (AGN) is of utmost importance as they may provide the long sought-after link between the central black hole and the host galaxy, establishing the AGN feedback. Recently, Laha et al. (2014) reported the X-ray analysis of a sample of 26 Seyferts observed with XMM-Newton, which are part of the so-called warm absorbers in X-rays (WAX) sample. They claim the non-detection of Fe K absorbers indicative of ultra-fast outflows (UFOs) in four observations previously analyzed by Tombesi et al. (2010). They mainly impute the Tombesi et al. detections to an improper modeling of the underlying continuum in the E=4-10 keV band. We therefore re-address here the robustness of these detections and we find that the main reason for the claimed non-detections is likely due to their use of single events only spectra, which reduces the total counts by 40%. Performing a re-analysis of the data in the whole E=0.3-10 keV energy band using their models and spectra including also double events, we find that the blue-shifted Fe K absorption lines are indeed detected at >99%. This work demonstrates the robustness of these detections in XMM-Newton even including complex model components such as reflection, relativistic lines and warm absorbers.
description: 5 pages, 1 figure, accepted for publication in MNRAS
Archivio storico per le province napoletane. N.S. A.16, Vol. 55. dell’intera collezione, n.1-4 (31 marzo 1931)
Creators: name: Croce, Benedetto
name: Cortese, Nino
name: Nicolini, Fausto
name: Pontieri, Ernesto
name: Ceci, Giuseppe
Publisher: name: Napoli : R. Deputazione napoletana di storia patria, 1930 [i.e.1931]
Year: 2020

description: N.S. A.16, Vol. 55. dell’intera collezione, n.1-4 (30 mar 1931): B. Croce, Filippo di Fiandra conte di Chieti e di Loreto (prima e dopo la sua partecipazione alla guerra contro Filippo il Bello), P. 5-40 ; N. Cortese, Feudi e feudatari napoletani della prima metà del Cinquecento (Contin. e fine: vedi volume precedente), P. 42-128 ; F. Nicolini, Giambattista Vico epigrafista (notizie storicobibliografiche), P. 129-200 ; E. Pontieri, Lettere del Marchese Caracciolo vicerè di Sicilia al Ministro Acton (1782-1786) (continua), P. 201-312 ; B. Croce, Canti encomiastici di Giovanni Cosentini a Ippolita Sforza, P. 313-318 ; G. Ceci, Bollettino bibliografico della Storia del Mezzogiorno (1915-29), P. 319-378.
Sense of Embodiment Inducement for People with Reduced Lower-body Mobility and Sensations with Partial-Visuomotor Stimulation
Creators: name: Jang, Hyuckjin
name: Kim, Taehei
name: Oh, Seo Young
name: Lee, Jeongmi
name: Lee, Sunghee
name: Yoon, Sang Ho
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: To induce the Sense of Embodiment~(SoE) on the virtual 3D avatar during a Virtual Reality~(VR) walking scenario, VR interfaces have employed the visuotactile or visuomotor approaches. However, people with reduced lower-body mobility and sensation~(PRLMS) who are incapable of feeling or moving their legs would find this task extremely challenging. Here, we propose an upper-body motion tracking-based partial-visuomotor technique to induce SoE and positive feedback for PRLMS patients. We design partial-visuomotor stimulation consisting of two distinctive inputs~(\textit{Button Control} \& \textit{Upper Motion tracking}) and outputs~(\textit{wheelchair motion} \& \textit{Gait Motion}). The preliminary user study was conducted to explore subjective preference with qualitative feedback. From the qualitative study result, we observed the positive response on the partial-visuomotor regarding SoE in the asynchronous VR experience for PRLMS.
On the completeness of multifractal spectra
Creators: name: Schmeling, Jörg
Publisher: name: Weierstrass Institute
Year: 1996
Subjects: subject: multifractal analysis
subject: Gibbs measures
subject: depending conformal prellers
subject: Lyapunov exponents
subject: thermodynamic formalism
subject: symbolic dynamics
subject: 37C45
subject: 37D35
subject: 28A80
subject: 37B25

description: We study the behavior of multifractal spectra on the boundary of their domains of definition. In particular, we show that the dimension of the set of points having minimal (or maximal) pointwise dimension is not necessarily zero. However, this situation may be neglected in the sense of Baire category for Gibbs measures on expanding conformal repellers.
Polarized light ions and spectator nucleon tagging at EIC
Creators: name: Guzey, V.
name: Higinbotham, D.
name: Hyde, Ch.
name: Nadel-Turonski, P.
name: Park, K.
name: Sargsian, M.
name: Strikman, M.
name: Weiss, C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: An Electron-Ion Collider (EIC) with suitable forward detection capabilities would enable a unique experimental program of deep-inelastic scattering (DIS) from polarized light nuclei (deuterium 2H, helium 3He) with spectator nucleon tagging. Such measurements promise significant advances in several key areas of nuclear physics and QCD: (a) neutron spin structure, by using polarized deuterium and eliminating nuclear effects through on-shell extrapolation in the spectator proton momentum; (b) quark/gluon structure of the bound nucleon at x > 0.1 and the dynamical mechanisms acting on it, by measuring the spectator momentum dependence of nuclear structure functions; (c) coherent effects in QCD, by exploring shadowing in tagged DIS on deuterium at x << 0.1. The JLab MEIC design (CM energy sqrt{s} = 15-50 GeV/nucleon, luminosity ~ 10^{34} cm^{-2} s^{-1}) provides polarized deuterium beams and excellent coverage and resolution for forward spectator tagging. We summarize the physics topics, the detector and beam requirements for spectator tagging, and on-going R&D efforts.
description: 6 pages, 2 figures. Prepared for proceedings of DIS 2014, XXII. International Workshop on Deep-Inelastic Scattering and Related Subjects, University of Warsaw, Poland, April 28 - May 2, 2014
Figure S1. from Fossil basicranium clarifies the origin of the avian central nervous system and inner ear
Creators: name: Chiappe, Luis M.
name: Navalón, Guillermo
name: Martinelli, Agustín G.
name: Nava, William
name: Field, Daniel J.
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 40308 Palaeontology (incl. Palynology)
subject: FOS: Earth and related environmental sciences

description: Enantiornithine braincase MPM-334-1 from the Late Cretaceous of South-Eastern Brazil. A) Original block containing MPM-334-1 and associated skeletal elements, of which all diagnosable bones are identified as belonging to Enantiornithes. Ventral (B) and caudal (C) views of MPM-334-1. Anatomical abbreviations between parentheses.
The difference in age of the two counter-rotating stellar disks of the spiral galaxy NGC 4138
Creators: name: Pizzella, Alessandro
name: Morelli, Lorenzo
name: Corsini, Enrico Maria
name: Bontà, Elena Dalla
name: Coccato, Lodovico
name: Sanjana, Georgina
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Sa spiral NGC 4138 is known to host two counter-rotating stellar disks, with the ionized gas co-rotating with one of them. We measured the kinematics and properties of the two counter-rotating stellar populations to constrain their formation scenario. A spectroscopic decomposition of the observed major-axis spectrum was performed to disentangle the relative contribution of the two counter-rotating stellar and one ionized-gas components. The line-strength indices of the two counter-rotating stellar components were measured and modeled with single stellar population models that account for the alpha/Fe overabundance. The counter-rotating stellar population is younger, marginally more metal poor, and more alpha-enhanced than the main stellar component. The younger stellar component is also associated with a star-forming ring. The different properties of the counter-rotating stellar components of NGC~4138 rule out the idea that they formed due to bar dissolution. Our findings support the results of numerical simulations in which the counter-rotating component assembled from gas accreted on retrograde orbits from the environment or from the retrograde merging with a gas-rich dwarf galaxy.
description: 6 pages, 5 figures, 3 on-line tables, accepted for publication in A&A
Effective homology for homotopy colimit and cofibrant replacement
Creators: name: Filakovský, Marek
Publisher: name: arXiv
Year: 2014
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55U10, 55N91

description: We extend the notion of simplicial set with effective homology to diagrams of simplicial sets. Further, for a given finite diagram of simplicial sets $X \colon \mathcal{I} \to \mathsf{sSet}$ such that each simplicial set $X(i)$ has effective homology, we present an algorithm computing the homotopy colimit $\mathsf{hocolim} X$ as a simplicial set with effective homology. We also give an algorithm computing the cofibrant replacement $X^\mathsf{cof}$ of $X$ as a diagram with effective homology. This is applied to computing of equivariant cohomology operations.
Conceptualising ‘Anti-Zionism’: Piasecki’s Group as an Intellectual Resource for the 1968 Antisemitic Campaign in People’s Poland
Creators: name: Lokhmatov, Aleksei
Publisher: name: Universita' degli Studi di Salerno
Year: 2019
Subjects: Poland
Antisemitism
Anti-zionism
March 1968
Bolesław Piasecki
“PAX”
Secular catholics

description: March 1968 has become one of the most significant dates in Polish history in the 20th century. The student demonstrations and antisemitic campaigning caused considerable changes in the social, political and cultural landscape of the Polish state. This article covers the participation of the Catholic group PAX headed by Boleslaw Piasecki in the ‘Anti-Zionist’ campaign of 1968. This question will be analysed both within the socio-political context of 1968 and in retrospect, with a focus on the intellectual genealogy of Piasecki’s group.
Design and performance of coded aperture optical elements for the CESR-TA x-ray beam size monitor
Creators: name: Alexander, J. P.
name: Chatterjee, A.
name: Conolly, C.
name: Edwards, E.
name: Ehrlichman, M. P.
name: Flanagan, J. W.
name: Fontes, E.
name: Heltsley, B. K.
name: Lyndaker, A.
name: Peterson, D. P.
name: Rider, N. T.
name: Rubin, D. L.
name: Seeley, R.
name: Shanks, J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: We describe the design and performance of optical elements for an x-ray beam size monitor (xBSM), a device measuring $e^+$ and $e^-$ beam sizes in the CESR-TA storage ring. The device can measure vertical beam sizes of $10-100~μ$m on a turn-by-turn, bunch-by-bunch basis at $e^\pm$ beam energies of $\sim2-5~$GeV. X-rays produced by a hard-bend magnet pass through a single- or multiple-slit (coded aperture) optical element onto a detector. The coded aperture slit pattern and thickness of masking material forming that pattern can both be tuned for optimal resolving power. We describe several such optical elements and show how well predictions of simple models track measured performances.
description: 9 pages, 13 figures, 3 tables, submitted to Nucl. Instrum. Meth. Phys. Res. A
IETS and quantum interference: propensity rules in the presence of an interference feature
Creators: name: Lykkebo, Jacob
name: Gagliardi, Alessio
name: Pecchia, Alessandro
name: Solomon, Gemma C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Destructive quantum interference in single molecule electronics is an intriguing phe- nomenon; however, distinguishing quantum interference effects from generically low transmission is not trivial. In this paper, we discuss how quantum interference ef- fects in the transmission lead to either low current or a particular line shape in current-voltage curves, depending on the position of the interference feature. Sec- ondly, we consider how inelastic electron tunneling spectroscopy can be used to probe the presence of an interference feature by identifying vibrational modes that are se- lectively suppressed when quantum interference effects dominate. That is, we expand the understanding of propensity rules in inelastic electron tunneling spectroscopy to molecules with destructive quantum interference.
description: 19 pages, 6 figures
Tropical determinant on transportation polytope
Creators: name: Gajula, Sailaja
name: Soprunov, Ivan
name: Soprunova, Jenya
Publisher: name: arXiv
Year: 2014
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 90C10, 52B12

description: Let ${\mathcal D}^{k,l}(m,n)$ be the set of all the integer points in the transportation polytope of $kn\times ln$ matrices with row sums $lm$ and column sums $km$. In this paper we find the sharp lower bound on the tropical determinant over the set ${\mathcal D}^{k,l}(m,n)$. This integer piecewise-linear programming problem in arbitrary dimension turns out to be equivalent to an integer non-linear (in fact, quadratic) optimization problem in dimension two. We also compute the sharp upper bound on a modification of the tropical determinant, where the maximum over all the transversals in a matrix is replaced with the minimum.
description: 16 pages, 2 figures
Wave propagation in non Gaussian random media
Creators: name: Franco, Mariano
name: Calzetta, Esteban
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We develop a compact perturbative series for accoustic wave propagation in a medium with a non Gaussian stochastic speed of sound. We use Martin - Siggia and Rose auxiliary field techniques to render the classical wave propagation problem into a "quantum" field theory one, and then frame this problem within so-called Schwinger - Keldysh of closed time-path (CTP) formalism. Variation of the so-called two-particle irreducible (2PI) effective action (EA), whose arguments are both the mean fields and the irreducible two point correlations, yields the Schwinger-Dyson and the Bethe-Salpeter equations. We work out the loop expansion of the 2PI CTP EA and show that, in the paradigmatic problem of overlapping spherical intrusions in an otherwise homogeneous medium, non Gaussian corrections may be much larger than Gaussian ones at the same order of loops
Resonant amplification of a relativistic electron bremsstrahlung on an atom in the undulator field
Creators: name: Krachkov, P. A.
name: Milstein, A. I.
name: Muchnoi, N. Yu.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: It is shown that the influence of the undulator field on the motion of a relativistic electron leads to a significant increase of the bremsstrahlung cross section on an atom near the end of the spectrum of undulator radiation. Observation of this effect is quite a realistic task.
description: 5 pages, 2 figures
Pied butcherbird field recording information from Syntactic modulation of rhythm in Australian pied butcherbird song
Creators: name: Xing, Jeffrey
name: Sainburg, Tim
name: Taylor, Hollis
name: Gentner, Timothy Q.
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: 60801 Animal Behaviour
subject: FOS: Biological sciences

description: Notes from H.T. after each recording session
Beyond the Born rule in quantum gravity
Creators: name: Valentini, Antony
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We have recently developed a new understanding of probability in quantum gravity. In this paper we provide an overview of this new approach and its implications. Adopting the de Broglie-Bohm pilot-wave formulation of quantum physics, we argue that there is no Born rule at the fundamental level of quantum gravity with a non-normalisable Wheeler-DeWitt wave functional $Ψ$. Instead the universe is in a perpetual state of quantum nonequilibrium with a probability density $P\neq\left\vert Ψ\right\vert ^{2}$. Dynamical relaxation to the Born rule can occur only after the early universe has emerged into a semiclassical or Schrödinger approximation, with a time-dependent and normalisable wave functional $ψ$, for non-gravitational systems on a classical spacetime background. In that regime the probability density $ρ$ can relax towards $\left\vert ψ\right\vert ^{2}$ (on a coarse-grained level). Thus the pilot-wave theory of gravitation supports the hypothesis of primordial quantum nonequilibrium, with relaxation to the Born rule taking place soon after the big bang. We also show that quantum-gravitational corrections to the Schrödinger approximation allow quantum nonequilibrium $ρ\neq\left\vert ψ\right\vert ^{2}$ to be created from a prior equilibrium ($ρ=\left\vert ψ\right\vert ^{2}$) state. Such effects are very tiny and difficult to observe in practice.
description: 39 pages. For special issue of Foundations of Physics, 'Pilot-wave and beyond: Louis de Broglie and David Bohm's quest for a quantum ontology', ed. A. Drezet
Arbeit und Selbstwert
Creators: name: Krammer, Eric
Publisher: name: Zeitschrift für freie psychoanalytische Forschung und Individualpsychologie
Year: 2023

description: Arbeit und Selbstwert sind zwei Begriffe, die beachtlich viele Bedeutungen in sich tragen und in der Vergangenheit vielfach definiert wurden. Arbeit ist seit jeher mit dem menschlichen Wesen verbunden, unterlag in der Menschheitsgeschichte mehrfachen Veränderungen hinsichtlich seiner gesellschaftlichen Bedeutung und stellte für Alfred Adler eine von den drei wichtigen Lebensaufgaben im Zusammenhang mit psychischer Gesundheit dar. Der Selbstwert als affektiver Teil des „Selbst“ wurde mehrfach konzeptualisiert und steht als „Selbstwertgefühl“ ebenso dem zentralen individualpsychologischen Konzept des Minderwertigkeitsgefühls und der Kompensation von diesem gegenüber. In der vorliegenden Arbeit werden die beiden Begriffe „Arbeit“ und „Selbstwert“ in ihrer Theorie einzeln beleuchtet und miteinander in Verbindung gebracht. Im Forschungsfeld des Projekts „Back to the Future“ beim sozialökonomischen Betrieb „Craft Jobs“ werden Zusammenhänge durch qualitative Interviews an einer speziellen Gruppe, bestehend aus 18 bis 24 Jahre alten arbeitslosen Teilnehmern und Teilnehmerinnen, untersucht, vorgestellt und diskutiert.
description: Zeitschrift für freie psychoanalytische Forschung und Individualpsychologie, 2023: Sonderheft Nr.5 (2023)
Annotated Note Types from Syntactic modulation of rhythm in Australian pied butcherbird song
Creators: name: Xing, Jeffrey
name: Sainburg, Tim
name: Taylor, Hollis
name: Gentner, Timothy Q.
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: 60801 Animal Behaviour
subject: FOS: Biological sciences

description: Spectrograms of all annotated note types across Birds 5, 22, 26
Utilizing the Active and Collaborative Learning Model in the Introductory Physics Course
Creators: name: Nam, Nguyen H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Model of active and collaborative learning applied in training specific subject makes clear advantage due to the goals of knowledge, skills that students got to develop successful future job. The author exploits the learning management system of Hanoi National University of Education to establish a learning environment in the Introductory Physics course Part 2, which supports to the blended learning, for the 1st year student. The method of pattern languages is taken to redesign learning content in the framework of ACLM, which focused on analysing real-life application and doing exercises, with the support of information and communication technology. Both formative and summative assessments were used to evaluate competency of students.
Detection of Solar Filaments using Suncharts from Kodaikanal Solar Observatory Archive Employing a Clustering Approach
Creators: name: Priyadarshi, Aditya
name: Hegde, Manjunath
name: Jha, Bibhuti Kumar
name: Chatterjee, Subhamoy
name: Mandal, Sudip
name: Chowdhury, Mayukh
name: Banerjee, Dipankar
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: With over 100 years of solar observations, the Kodaikanal Solar Observatory (KoSO) is a one-of-a-kind solar data repository in the world. Among its many data catalogues, the `suncharts' at KoSO are of particular interest. These Suncharts (1904-2020) are coloured drawings of different solar features, such as sunspots, plages, filaments, and prominences, made on papers with a Stonyhurst latitude-longitude grid etched on them. In this paper, we analyze this unique data by first digitizing each suncharts using an industry-standard scanner and saving those digital images in high-resolution `.tif' format. We then examine the Cycle~19 and Cycle~20 data (two of the strongest cycles of the last century) with the aim of detecting filaments. To this end, we employed `k-means clustering' method and obtained different filament parameters such as position, tilt angle, length, and area. Our results show that filament length (and area) increases with latitude and the pole-ward migration is clearly dominated by a particular tilt sign. Lastly, we cross-verified our findings with results from KoSO digitized photographic plate database for the overlapping time period and obtained a good agreement between them. This work, acting as a proof-of-the-concept, will kick-start new efforts to effectively use the entire hand-drawn series of multi-feature, full-disk solar data and enable researchers to extract new sciences, such as the generation of pseudo magnetograms for the last 100 years.
description: 12 pages, 7 Figures, Accepted for publication in ApJ
Upper limits on the isotropic diffuse flux of cosmic PeV photons from Carpet-2 observations
Creators: name: Dzhappuev, D. D.
name: Afashokov, Yu. Z.
name: Dzaparova, I. M.
name: Dzhatdoev, T. A.
name: Gorbacheva, E. A.
name: Karpikov, I. S.
name: Khadzhiev, M. M.
name: Klimenko, N. F.
name: Kudzhaev, A. U.
name: Kurenya, A. N.
name: Lidvansky, A. S.
name: Mikhailova, O. I.
name: Petkov, V. B.
name: Podlesnyi, E. I.
name: Pozdnukhov, N. A.
name: Romanenko, V. S.
name: Rubtsov, G. I.
name: Troitsky, S. V.
name: Unatlokov, I. B.
name: Vaiman, I. A.
name: Yanin, A. F.
name: Zhuravleva, K. V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Isotropic diffuse gamma-ray flux in the PeV energy band is an important tool for multimessenger tests of models of the origin of high-energy astrophysical neutrinos and for new-physics searches. So far, this flux has not yet been observed. Carpet-2 is an air-shower experiment capable of detecting astrophysical gamma rays with energies above 0.1 PeV. Here we report the upper limits on the isotropic gamma-ray flux from Carpet-2 data obtained in 1999-2011 and 2018-2022. These results, obtained with the new statistical method based on the shape of the muon-number distribution, summarize Carpet-2 observations as the upgraded installation, Carpet-3, starts its operation.
description: 5 pages, 3 figures, JETPL.cls; V2: references added, version accepted by JETP Letters
Song segmentation manual from Syntactic modulation of rhythm in Australian pied butcherbird song
Creators: name: Xing, Jeffrey
name: Sainburg, Tim
name: Taylor, Hollis
name: Gentner, Timothy Q.
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: 60801 Animal Behaviour
subject: FOS: Biological sciences

description: Manual for segmenting song units in Praat
High-yield production of quantum corrals in a surface reconstruction pattern
Creators: name: Dou, Wenzhen
name: Wu, Meimei
name: Song, Biyu
name: Zhi, Guoxiang
name: Hua, Chenqiang
name: Zhou, Miao
name: Niu, Tianchao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The power of surface chemistry to create atomically precise nanoarchitectures offers intriguing opportunities to advance the field of quantum technology. Strategies for building artificial electronic lattices by individually positioning atoms or molecules result in precisely tailored structures but lack structural robustness. Here, taking the advantage of strong bonding of Br atoms on noble metal surfaces, we report the production of stable quantum corrals by dehalogenation of hexabromobenzene molecules on a preheated Au(111) surface. The byproducts, Br adatoms, are confined within a new surface reconstruction pattern and aggregate into nanopores with an average size of 3.7+-0.1 nm, which create atomic orbital-like quantum resonance states inside each corral due to the interference of scattered electron waves. Remarkably, the atomic orbitals can be hybridized into molecular-like orbitals with distinct bonding and anti-bonding states. Our study opens up an avenue to fabricate quantum structures with high yield and superior robustness.
description: 15 pages, 5 figures; Including supporting information. The paper has been accepted in Nano Letters. (Email: mzhou@buaa.edu.cn)
Le Narrateur Virtuel Collaboratif (NVC)
Creators: name: TROEL, Christophe
Publisher: name: Zenodo
Year: 2025
Subjects: learn
french
language
apprentissage
AI
MPNC

description: Le Narrateur Virtuel Collaboratif (NVC) est un dispositif hybride novateur qui vise à transformer l’apprentissage linguistique et la création narrative en intégrant intelligemment deux dimensions clés : l’intelligence artificielle (IA) et la collaboration sociale. S’appuyant sur les principes éprouvés de la Méthode de Projet Narratif Contextuel (MPNC), le NVC permet à chaque apprenant de saisir un récit de base – reflet de son quotidien ou de ses aspirations – qui se voit ensuite enrichi de propositions automatiques (vocabulaire thématique, variations grammaticales, suggestions stylistiques) générées par un assistant IA.

Parallèlement, un espace collaboratif dédié encourage le partage et la co-création entre utilisateurs, facilitant ainsi l’obtention de feedbacks et la co-construction d’histoires narratives. Ce dispositif interactif et évolutif offre une expérience d’apprentissage personnalisée, tout en favorisant l’émulation collective et l’engagement des participants. Conçu initialement pour l’apprentissage du français, le NVC se veut également adaptable à d’autres langues, ouvrant ainsi des perspectives pour une application interdisciplinaire et multilingue.
Supplementary Figures from Syntactic modulation of rhythm in Australian pied butcherbird song
Creators: name: Xing, Jeffrey
name: Sainburg, Tim
name: Taylor, Hollis
name: Gentner, Timothy Q.
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: 60801 Animal Behaviour
subject: FOS: Biological sciences

description: Figure S1 to S8
Weighted Solyanik estimates for the strong maximal function
Creators: name: Hagelstein, Paul A.
name: Parissis, Ioannis
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42B25 (Primary), 42B35 (Secondary)

description: Let $\mathsf M_{\mathsf S}$ denote the strong maximal operator on $\mathbb R^n$ and let $w$ be a non-negative, locally integrable function. For $α\in(0,1)$ we define the weighted sharp Tauberian constant $\mathsf C_{\mathsf S}$ associated with $\mathsf M_{\mathsf S}$ by $$ \mathsf C_{\mathsf S} (α):= \sup_{\substack {E\subset \mathbb R^n \\ 0α\}). $$ We show that $\lim_{α\to 1^-} \mathsf C_{\mathsf S} (α)=1$ if and only if $w\in A_\infty ^*$, that is if and only if $w$ is a strong Muckenhoupt weight. This is quantified by the estimate $\mathsf C_{\mathsf S}(α)-1\lesssim_{n} (1-α)^{(cn [w]_{A_\infty ^*})^{-1}}$ as $α\to 1^-$, where $c>0$ is a numerical constant; this estimate is sharp in the sense that the exponent $1/(cn[w]_{A_\infty ^*})$ can not be improved in terms of $[w]_{A_\infty ^*}$. As corollaries, we obtain a sharp reverse Hölder inequality for strong Muckenhoupt weights in $\mathbb R^n$ as well as a quantitative imbedding of $A_\infty^*$ into $A_{p}^*$. We also consider the strong maximal operator on $\mathbb R^n$ associated with the weight $w$ and denoted by $\mathsf M_{\mathsf S} ^w$. In this case the corresponding sharp Tauberian constant $\mathsf C_{\mathsf S} ^w$ is defined by $$ \mathsf C_{\mathsf S} ^w α) := \sup_{\substack {E\subset \mathbb R^n \\ 0α\}).$$ We show that there exists some constant $c_{w,n}>0$ depending only on $w$ and the dimension $n$ such that $\mathsf C_{\mathsf S} ^w (α)-1 \lesssim_{w,n} (1-α)^{c_{w,n}}$ as $α\to 1^-$ whenever $w\in A_\infty ^*$ is a strong Muckenhoupt weight.
description: 19 pages, submitted for publication
State-resolved ionization dynamics of neon atom induced by x-ray free-electron-laser pulses
Creators: name: Budewig, Laura
name: Son, Sang-Kil
name: Santra, Robin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present a theoretical framework to describe state-resolved ionization dynamics of neon atoms driven by ultraintense x-ray free-electron-laser pulses. In general, x-ray multiphoton ionization dynamics of atoms have been described by time-dependent populations of the electronic configurations visited during the ionization dynamics, neglecting individual state-to-state transition rates and energies. Combining a state-resolved electronic-structure calculation, based on first-order many-body perturbation theory, with a Monte Carlo rate-equation method, enables us to study state-resolved dynamics based on time-dependent state populations. Our results demonstrate that configuration-based and state-resolved calculations provide similar charge-state distributions, but the differences are visible when resonant excitations are involved, which are also reflected in calculated time-integrated electron and photon spectra. In addition, time-resolved spectra of ions, electrons, and photons are analyzed for different pulse durations to explore how frustrated absorption manifests itself during the ionization dynamics of neon atoms.
description: 16 pages and 10 figures