cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Sparse optimization of mutual synchronization in collectively oscillating networks
Creators: name: Nakao, Hiroya
name: Yamaguchi, Katsunori
name: Katayama, Shingo
name: Yanagita, Tatsuo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: We consider a pair of collectively oscillating networks of dynamical elements and optimize their internetwork coupling for efficient mutual synchronization based on the phase reduction theory developed in Ref. [H. Nakao, S. Yasui, M. Ota, K. Arai, and Y. Kawamura, Chaos 28, 045103 (2018)]. The dynamical equations describing a pair of weakly coupled networks are reduced to a pair of coupled phase equations, and the linear stability of the synchronized state between the networks is represented as a function of the internetwork coupling matrix. We seek the optimal coupling by minimizing the Frobenius and L1 norms of the internetwork coupling matrix for the prescribed linear stability of the synchronized state. Depending on the norm, either a dense or sparse internetwork coupling yielding efficient mutual synchronization of the networks is obtained. In particular, a sparse yet resilient internetwork coupling is obtained by L1-norm optimization with additional constraints on the individual connection weights.
description: 25 pages, 7 figures
Simultaneous estimation of the mean and the variance in heteroscedastic Gaussian regression
Creators: name: Gendre, Xavier
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62G08 (Primary)

description: Let $Y$ be a Gaussian vector of $\mathbb{R}^n$ of mean $s$ and diagonal covariance matrix $Γ$. Our aim is to estimate both $s$ and the entries $σ_i=Γ_{i,i}$, for $i=1,...,n$, on the basis of the observation of two independent copies of $Y$. Our approach is free of any prior assumption on $s$ but requires that we know some upper bound $γ$ on the ratio $\max_iσ_i/\min_iσ_i$. For example, the choice $γ=1$ corresponds to the homoscedastic case where the components of $Y$ are assumed to have common (unknown) variance. In the opposite, the choice $γ>1$ corresponds to the heteroscedastic case where the variances of the components of $Y$ are allowed to vary within some range. Our estimation strategy is based on model selection. We consider a family $\{S_m\timesΣ_m, m\in\mathcal{M}\}$ of parameter sets where $S_m$ and $Σ_m$ are linear spaces. To each $m\in\mathcal{M}$, we associate a pair of estimators $(\hat{s}_m,\hatσ_m)$ of $(s,σ)$ with values in $S_m\timesΣ_m$. Then we design a model selection procedure in view of selecting some $\hat{m}$ among $\mathcal{M}$ in such a way that the Kullback risk of $(\hat{s}_{\hat{m}},\hatσ_{\hat{m}})$ is as close as possible to the minimum of the Kullback risks among the family of estimators $\{(\hat{s}_m,\hatσ_m), m\in\mathcal{M}\}$. Then we derive uniform rates of convergence for the estimator $(\hat{s}_{\hat{m}},\hatσ_{\hat{m}})$ over Hölderian balls. Finally, we carry out a simulation study in order to illustrate the performances of our estimators in practice.
description: Published in at http://dx.doi.org/10.1214/08-EJS267 the Electronic Journal of Statistics (http://www.i-journals.org/ejs/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Two approaches that prove divergence free nature of non-local gravity
Creators: name: Hameeda, M.
name: Pourhassan, B.
name: Rocca, M. C.
name: Brzo, Aram Bahroz
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This paper is an attempt to study the thermodynamics of the structure formation in the large scale universe in the non local gravity using Boltzmann statistics and the Tsallis statistics. The partition function is obtained in both the approaches and the corresponding thermodynamics properties are evaluated. The important thing about the paper is that we surprisingly get the divergence free integrals and thus stress upon the fact that the nonlocal gravity is the singularity free model of gravity.
description: See published version in EPJC
LA CASA ECOLOGICA PREFABBRICATA.INDIRIZZI PROGETTUALI PER LA CONTESTUALIZZAZIONE AMBIENTALE
Creators: name: Di Micco, Sara
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2009

description: La ricerca “La casa ecologica prefabbricata. Indirizzi progettuali per la contestualizzazione ambientale” deve considerarsi inserita all’interno dell’ambito tematico che riguarda il rapporto tra residenza e sostenibilità ambientale. In particolare lo studio condotto ha sviluppato approfondimenti specifici in merito alle tecniche costruttive off-site (fuori opera), analizzando edifici nei quali l’industrializzazione edilizia è coniugata ai dettami del costruire ecocompatibile, dove design di eccellenza e cura nella scelta dei materiali si uniscono al fine di migliorare il comfort abitativo.
Gli obiettivi che la ricerca ha perseguito sono di seguito elencati:
-	valutare se due realtà, apparentemente inconiugabili, quali la prefabbricazione e l’architettura bioecologica, possano convivere garantendo qualità architettonica e ambientale;
-	comprendere quali elementi del costruire off-site possano rappresentare delle invarianti rispetto alle diverse dislocazioni geografiche;
-	individuare soluzioni progettuali che integrino variabili (contesto) ed invariabili (elementi off-site), al fine di ottenere un risultato significativo per la sostenibilità ambientale.
Elemento peculiare della ricerca è l’analisi critica delle recenti sperimentazioni in tema di prefab home, in ambito europeo ed extraeuropeo. Le case prefabbricate selezionate come casi studio sono descritte e valutate negli aspetti tecnologici, energetici e tipologici, permettendo in tal modo di comprendere i punti di forza e i punti deboli di tali costruzioni, evidenziando, in particolare, le innovazioni relative alle moderne tecniche di costruzione fuori opera (Modern method of constuction, Mmc)
La proposta di un abaco di elementi off-site, da considerarsi “varianti progettuali”, da impiegare in modo flessibile in contesti dalle differenti caratteristiche e lo studio di soluzioni morfologiche e tecnologiche che rispettino il genius loci dei territori appartenenti all’area del Mediterraneo, costituiscono il risultato originale della ricerca, poiché forniscono un quadro complessivo rispetto all’argomento e nuovi indirizzi progettuali volti alla sperimentazione e alla prototipizzazione.
Isospectral Deformations of Eguchi-Hanson Spaces as Nonunital Spectral Triples
Creators: name: Yang, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Operator Algebras (math.OA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We study the isospectral deformations of the Eguchi-Hanson spaces along a torus isometric action in the noncompact noncommutative geometry. We concentrate on locality, smoothness and summability conditions of the nonunital spectral triples, and relate them to the geometric conditions to be noncommutative spin manifolds.
description: 43 pages
Mesoscopic simulations of the in situ NMR spectra of porous carbon based supercapacitors: Electronic structure and adsorbent reorganisation effects
Creators: name: Sasikumar, Anagha
name: Belhboub, Anouar
name: Bacon, Camille
name: Forse, Alexander C.
name: Griffin, John M.
name: Grey, Clare P
name: Simon, Patrice
name: Merlet, Céline
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In situ NMR spectroscopy is a powerful technique to investigate charge storage mechanisms in carbon-based supercapacitors thanks to its ability to distinguish ionic and molecular species adsorbed in the porous electrodes from those in the bulk electrolyte. The NMR peak corresponding to the adsorbed species shows a clear change of chemical shift as the applied potential difference is varied. This variation in chemical shift is thought to originate from a combination of ion reorganisation in the pores and changes in ring current shifts due to the changes of electronic density in the carbon. While previous Density Functional Theory calculations suggested that the electronic density has a large effect, the relative contributions of these two effects is challenging to untangle. Here, we use mesoscopic simulations to simulate NMR spectra and investigate the relative importance of ion reorganisation and ring currents on the resulting chemical shift. The model is able to predict chemical shifts in good agreement with NMR experiments and indicates that the ring currents are the dominant contribution. A thorough analysis of a specific electrode/electrolyte combination for which detailed NMR experiments have been reported allows us to confirm that local ion reorganisation has a very limited effect but the relative quantities of ions in pores of different sizes, which can change upon charging/discharging, can lead to a significant effect. Our findings suggest that in situ NMR spectra of supercapacitors may provide insights into the electronic structure of carbon materials in the future.
Sull'ambiguità del concetto di servizio pubblico radiotelevisivo
Creators: name: Vitale, Simona
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2006

description: Risulta davvero arduo riuscire a definire inequivocabilmente il public service broadcasting (PSB), proprio perché la sua missione ed identità cambiano in differenti luoghi e tempi.
Il servizio pubblico radiotelevisivo può essere descritto come un marchio di qualità,una condizione preliminare del pluralismo, uno strumento di partecipazione democratica, un mezzo per promuovere la coesione sociale e molto altro ancora.
Si è visto come ovunque il PSB rappresenti un elemento fondamentale di democrazia, ma in Europa, tale concetto sta soffrendo di una crisi identitaria. Il suo futuro è minacciato da difficoltà finanziarie e dallo sviluppo tecnologico.
Pertanto, oggi più che mai si sente l’esigenza di una ridefinizione di questo concetto allo scopo di riadattare il servizio pubblico alle richieste dell’era digitale.
Inoltre, in Europa i governi stanno attraversando un processo di ripensamento delle politiche sulla comunicazione alla luce dello sviluppo della tecnologia digitale per scongiurare il rischio che il servizio pubblico venga lasciato senza sufficienti risorse per sopravvivere.
Il PSB ha sperimentato diverse giunture critiche nella sua storia (la fine del monopolio, la competizione con le reti private, lo sviluppo dei canali tematici ecc.). La differenza oggi è che la cosiddetta società dell’informazione incrementa il bisogno di conoscenza. La tesi che qui si vuol sostenere è che il public service broadcasting potrebbe soddisfare questo tipo di necessità meglio delle reti commerciali. Per questa ragione è auspicabile un servizio pubblico che tenga conto della sua capacità di diffondere non solo intrattenimento, ma anche informazioni utili, cultura e conoscenza.
Bruton Tyrosine Kinase Inhibitors in B-Cell Malignancies: Their Use and Differential Features
Creators: name: Shirley, Matt
Publisher: name: Adis Journals
Year: 2021
Subjects: Medicine
Cancer

description: Declarations Funding The preparation of this review was not supported by any external funding. Authorship and Conflict of interest Matt Shirley is a salaried employee of Adis International Ltd/Springer Nature, is responsible for the article content and declares no relevant conflicts of interest. Ethics approval, Consent to participate, Consent to publish, Availability of data and material, Code availability Not applicable.
Additional information about this Adis Drug Review can be found here.

Abstract
Starting with the first-in-class agent ibrutinib, the development of Bruton tyrosine kinase (BTK) inhibitors has led to dramatic improvements in the management of B-cell malignancies. Subsequently, more-highly selective second-generation BTK inhibitors (including acalabrutinib, zanubrutinib, tirabrutinib and orelabrutinib) have been developed, primarily with an aim to reduce off-target toxicities. More recently, third-generation agents including the non-covalent BTK inhibitors pirtobrutinib and nemtabrutinib have entered later-stage clinical development. BTK inhibitors have shown strong activity in a range of B-cell malignancies, including chronic lymphocytic leukaemia/small lymphocytic lymphoma, mantle cell lymphoma, Waldenström’s macroglobulinaemia and marginal zone lymphoma. The agents have acceptable tolerability, with adverse events generally being manageable with dosage modification. This review article summarises the evidence supporting the role of BTK inhibitors in the management of B-cell malignancies, including highlighting some differential features between agents.

© Springer Nature Switzerland AG 2021
Airborne Synthetic Aperture Radar:  Models, Focusing and Experiments
Creators: name: Perna, Stefano
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2006

description: Synthetic Aperture Radar (SAR) is a remote sensing technique that allows the generation of microwave images of the Earth surface, independently of weather condition and of sun illumination. SAR sensors can be either mounted on spacecrafts (spaceborne systems) or placed on airplanes (airborne systems).
In this thesis the study of problems related to the use of airborne SAR is addressed.
The thesis is organized in five chapters and Chapter 1 presents the basic rationale of SAR technique. The assumption that the sensor flight path is a straight line is adopted in the first chapter, which is preliminary to the subsequent analysis, and allows introducing the formalism adopted in Chapters 2-5, where the assumption of straight flight path, not realistic for airborne systems, is relaxed, and the original results of this thesis are presented.
Airborne SAR acquisition model is deeply analyzed, and realization of an efficient airborne raw data simulator, which represents a useful tool for mission planning, SAR system design and inversion algorithm testing, is presented (Chapter 2).
The analysis of the airborne acquisition model allows also highlighting problems related to airborne SAR focusing. In particular, a quantitative analysis of  the accuracy achievable by airborne SAR images is performed;  extension to the repeat pass airborne interferometry is also included (Chapter 3). Such an analysis allows, on one side, quantifying the airborne repeat pass interferogram phase accuracy in terms of the expected motion measurement system accuracy (Chapter 3); on the other side, designing a new efficient airborne SAR processor (Chapter 4).
Theoretical results presented in Chapter 3 are, finally, validated by an airborne differential interferometry experiment carried out by using real data (Chapter 5).
title: Frau Doktor steht zur Wahl. Eine quantitative Analyse des bundesdeutschen Wahlverhaltens auf lokaler Ebene aus der Genderperspektive
Creators: name: Friedhoff, Caroline
name: Holtkamp, Lars
name: Wiechmann, Elke
Publisher: name: Humboldt-Universität zu Berlin
Year: 2016
Subjects: subject: Frauenrepräsentanz
subject: Kommunalwahlen
subject: Kumulieren
subject: Panaschieren
subject: Politik
subject: Relativer Wahlerfolg
subject: Repräsentation
subject: WählerInnenverhalten
subject: ddc:320

description: Dieser Beitrag geht zwei grundlegenden Fragen nach: zum einen, ob Frauen bei Kommunalwahlen, bei denen Kumulieren und Panaschieren möglich ist, gezielt nach unten gewählt – und somit durch die Wählerschaft diskriminiert – werden, und zum anderen, ob ein vorhandener Doktortitel der KandidatInnen den Wahlerfolg, unabhängig vom Geschlecht, im Vergleich zu Nicht-Promovierten erhöht. Die Analysen der Kommunalwahlen in 74 Klein- (20 000 bis 50 000 EinwohnerInnen) und Großstädten (mehr als 100 000 EinwohnerInnen) anhand der Parteilisten mit fast 16 000 KandidatInnen zeigen eine Benachteiligung von Frauen gegenüber den (männlichen) Kandidaten durch die Wählerschaft, die sich allerdings nur in Kleinstädten, nicht jedoch in Großstädten äußert. Ein Doktortitel begünstigt den relativen Wahlerfolg von Frauen und Männern gegenüber Nicht-Promovierten wie erwartet, wobei es keine signifikanten Differenzen im Wahlerfolg zwischen Frauen und Männern mit Doktortitel gibt. Die Annahmen und Ergebnisse werden im Spiegel aktueller Forschungsergebnisse diskutiert.
Dark matter interacting via a massive spin-2 mediator in warped extra-dimensions
Creators: name: de Giorgi, Arturo
name: Vogl, Stefan
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study dark matter interacting via a massive spin-2 mediator. To have a consistent effective theory for the spin-2 particle, we work in a warped extra-dimensional model such that the mediator(s) are the Kaluza-Klein (KK) modes of the 5D graviton. We pay close attention to dark matter annihilations into KK-gravitons. Due to the high energy behavior of longitudinal modes of spin-2 fields, these channels exhibit a tremendous growth at large center of mass energies $\sqrt{s}$ if only one spin-2 mediator is considered. For the first time, we include the full KK-tower in this dark matter production process and find that this growth is unphysical and cancels once the full field content of the extra-dimensional theory is taken into account. Interestingly, this implies that it is not possible to approximate the results obtained in the full theory with a reduced set of effective interactions once $\sqrt{s}$ is greater than the first graviton mass. This casts some doubt on the universal applicability of previous studies with spin-2 mediators within an EFT framework and prompts us to revisit the phenomenological allowed parameter space of gravitationally interacting scalar dark matter in warped extra-dimensions.
description: 21 pages + 2 appendices, 10 figures
Composition-Diamond Lemma for Tensor Product of Free Algebras
Creators: name: Bokut, L. A.
name: Chen, Yuqun
name: Chen, Yongshan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16S10, 16S15, 13P10

description: In this paper, we establish Composition-Diamond lemma for tensor product $k< X> \otimes k< Y>$ of two free algebras over a field. As an application, we construct a Groebner-Shirshov basis in $k< X> \otimes k< Y>$ by lifting a Groebner-Shirshov basis in $k[X] \otimes k< Y>$, where $k[X]$ is a commutative algebra.
description: 19 pages
An assessment of rainfall-runoff modeling methodology
Creators: name: Loague, Keith M.
Publisher: name: University of British Columbia
Year: 2010

description: This study reports model performance calculations for three event-based rainfall-runoff models on both real and synthetic data sets. The models include a regression model, a unit hydrograph model and a quasi-physically based model. The real data sets are for small upland catchments from the Washita River Experimental Watershed, Oklahoma; the Mahantango Creek Experimental Watershed, Pennsylvania; and the Hubbard Brook Experimental Forest, New Hampshire. The synthetic data sets are generated with a stochastic-conceptual rainfall-runoff simulator. Model performance is assessed for a verification period that is carefully distinguished from the calibration period. Performance assessment was carried out both in forecasting mode and in prediction mode. The results on the real data sets show surprisingly poor forecasting efficiencies for all models on all data sets. The unit hydrograph model and the quasi-physically based model have little forecasting power; the regression model is marginally better. The performance of the models in prediction mode is better. The regression model and the unit hydrograph model showed acceptable predictive power, but the quasi-physically based model produced acceptable predictions on only one of the three catchments. The performance of the regression and unit hydrograph models, in both forecasting and prediction modes, for synthetic data is much better than for the real catchments. The performance of the quasi-physically based model on a synthetic data set is surprisingly poor. Supplemental data gathered from the Oklahoma catchment was used for a spatial variability analysis of steady-state infiltration rates. These data were then used to re-excite the quasi-physically based model; the new information resulted in improved model performance. The concept of space-time tradeoffs across the hydrologic data sets of competing models is introduced and tested. Results show the existence of space-time tradeoffs within model data sets but not across model data sets. It is the belief of the author that the primary barrier to successful application of physically based models in the field lies in the scale problems that are associated with the unmeasurable spatial variability of rainfall and soil hydraulic properties. The fact that simpler, less data intensive models provided as good or better predictions than a physically based model is food for thought. The model evaluation and space-time tradeoff experiments reported in this study are conceptually linked to data-worth analysis, network-design, and model-choice criteria for future studies.
The 2003 Outburst of the X-ray Transient H 1743-322: Comparisons with the Black Hole Microquasar XTE J1550-564
Creators: name: McClintock, Jeffrey E.
name: Remillard, Ronald A.
name: Rupen, Michael P.
name: Torres, M. A. P.
name: Steeghs, D.
name: Levine, Alan M.
name: Orosz, Jerome A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The bright X-ray transient H 1743-322 was observed daily by the Rossi X-ray Timing Explorer (RXTE) during most of its 8-month outburst in 2003. We present a detailed spectral analysis and a supporting timing analysis of all of these data, and we discuss the behavior and evolution of the source in terms of the three principal X-ray states defined by Remillard and McClintock. These X-ray results are complemented by Very Large Array (VLA) data obtained at six frequencies that provide quite complete coverage of the entire outburst cycle at 4.860 GHz and 8.460 GHz. We also present photometric data and finding charts for the optical counterpart in both outburst and quiescence. We closely compare H 1743-322 to the well-studied black-hole X-ray transient XTE J1550-564 and find the behaviors of these systems to be very similar. As reported elsewhere, both H 1743-322 and XTE J1550-564 are relativistic jet sources and both exhibit a pair of high-frequency QPO oscillations with a 3:2 frequency ratio. The many striking similarities between these two sources argue strongly that H 1743-322 is a black hole binary, although presently no dynamical data exist to support this conclusion.
description: aastex preprint, 24 pages of text, appendix with 5 data tables, 16 figures. Accepted for publication in ApJ. Complete reanalysis of spectral data with power-law break energy and Fe K line width parameters free instead of fixed, which resulted in small changes in the fitted parameters and fluxes. Other small changes made throughout
Amplification of explosive width in complex networks
Creators: name: Khanra, Pitambar
name: Kundu, Prosenjit
name: Pal, Pinaki
name: Ji, Peng
name: Hens, Chittaranjan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We present an adaptive coupling strategy to induce hysteresis/explosive synchronization (ES) in complex networks of phase oscillators Sakaguchi-Kuramoto model). The coupling strategy ensures explosive synchronization with significant explosive width enhancement. Results show the robustness of the strategy and the strategy can diminish (by inducing enhanced hysteresis loop) the contrarian impact of phase frustration in the network, irrespective of network structure or frequency distributions. Additionally, we design a set of frequency for the oscillators which eventually ensure complete in-phase synchronization behavior among these oscillators (with enhanced explosive width) in the case of adaptive-coupling scheme. Based on a mean-field analysis, we develop a semi-analytical formalism, which can accurately predict the backward transition of synchronization order parameter.
description: 7 pages, 5 figures, Published in Chaos (Fast track)
Integrable hard rod deformation of the Heisenberg spin chains
Creators: name: Pozsgay, Balázs
name: Gombor, Tamás
name: Hutsalyuk, Arthur
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We present new integrable models of interacting spin-1/2 chains, which can be interpreted as hard rod deformations of the XXZ Heisenberg chains. The models support multiple particle types: dynamical hard rods of length $\ell$ and particles with lengths $\ell'
description: 13 pages, v2: reference added and a few new formulas for the XXX case
Microscopic origin of the effect of substrate metallicity on interfacial free energies
Creators: name: Scalfi, Laura
name: Rotenberg, Benjamin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the effect of the metallic character of solid substrates on solid-liquid interfacial thermodynamics using molecular simulations. Building on the recent development of a semi-classical Thomas-Fermi model to tune the metallicity in classical molecular dynamics simulations, we introduce a new thermodynamic integration framework to compute the evolution of the interfacial free energy as a function of the Thomas-Fermi screening length. We validate this approach against analytical results for empty capacitors and by comparing the predictions in the presence of an electrolyte with values determined from the contact angle of droplets on the surface. The general expression derived in this work highlights the role of the charge distribution within the metal. We further propose a simple model to interpret the evolution of the interfacial free energy with voltage and Thomas-Fermi length, which allows us to identify the charge correlations within the metal as the microscopic origin of the evolution of the interfacial free energy with the metallic character of the substrate. This new methodology opens the door to the molecular-scale study of the effect of the metallic character of the substrate on confinement-induced transitions in ionic systems, as reported in recent Atomic Force Microscopy and Surface Force Apparatus experiments.
description: 12 pages, 9 figures including supporting information
Evidence for gap anisotropy in CaC6 from directional point-contact spectroscopy
Creators: name: Gonnelli, R. S.
name: Daghero, D.
name: Delaude, D.
name: Tortello, M.
name: Ummarino, G. A.
name: Stepanov, V. A.
name: Kim, J. S.
name: Kremer, R. K.
name: Sanna, A.
name: Profeta, G.
name: Massidda, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present the first results of directional point-contact spectroscopy in high quality CaC6 samples both along the ab plane and in the c-axis direction. The superconducting order parameter Δ(0), obtained by fitting the Andreev-reflection (AR) conductance curves at temperatures down to 400 mK with the single-band 3D Blonder-Tinkham-Klapwijk model, presents two different distributions in the two directions of the main current injection, peaked at 1.35 and 1.71 meV, respectively. By ab-initio calculations of the AR conductance spectra, we show that the experimental results are in good agreement with the recent predictions of gap anisotropy in CaC6.
description: 4 pages, 4 color eps figures. New results at 400 mK added; figures and discussion modified accordingly. Phys. Rev. Lett., accepted
Correlation-induced valley topology in buckled graphene superlattices
Creators: name: Manesco, Antonio L. R.
name: Lado, Jose L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Flat bands emerging in buckled monolayer graphene superlattices have been recently shown to realize correlated states analogous to those observed in twisted graphene multilayers. Here, we demonstrate the emergence of valley topology driven by competing electronic correlations in buckled graphene superlattices. We show, both by means of atomistic models and a low-energy description, that the existence of long-range electronic correlations leads to a competition between antiferromagnetic and charge density wave instabilities, that can be controlled by means of screening engineering. Interestingly, we find that the emergent charge density wave has a topologically non-trivial electronic structure, leading to a coexistent quantum valley Hall insulating state. In a similar fashion, the antiferromagnetic phase realizes a spin-polarized quantum valley-Hall insulating state. Our results put forward buckled graphene superlattices as a new platform to realize interaction-induced topological matter.
description: 7 pages, 6 figures
Populating the galaxy velocity dispersion - supermassive black hole mass diagram: A catalogue of (M_bh, sigma) values
Creators: name: Graham, Alister W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: An updated catalogue of 76 galaxies with direct supermassive black hole mass measurements (M_bh) plus, when available, their host bulge's central velocity dispersion (sigma_0) is provided. Fifty of these mass measurements are considered reliable, while the others remain somewhat uncertain at this time. An additional eight stellar systems, including one stellar cluster and three globular clusters, are listed as hosting potential intermediate mass black holes < 10^6 M_solar. With this larger data set, the demographics within the M_bh-sigma_0 diagram are briefly explored. Many barred galaxies are shown to be offset from the M_bh-sigma_0 relation defined by the non-barred galaxies, in the sense that their velocity dispersions are too high. Furthermore, including 88 AGN with black hole mass estimates from reverberation mapping studies, we speculate that barred AGN may follow this same general trend. We also show that some AGN with sigma_0 < 100 km/s tend to reside up to 0.6 dex above the "barless" M_bh-sigma_0 relation. Finally, it is shown that ``core galaxies'' appear not to define an additional subdivision of the M_bh-sigma_0 diagram, although improved methods for measuring sigma_0-values will be valuable.
description: To appear in PASA, accepted on the 4th of July, 2008
Compassion Fatigue, Vicarious Trauma and Burnout among Nurses in the Emergency Department of Selected Tertiary Hospitals in Laguna
Creators: name: Bagalanon, Regine Karla P.
Publisher: name: Zenodo
Year: 2019

description: AIM: To describe the level of awareness and determine the level of risk of compassion fatigue, vicarious trauma, and burnout among emergency department nurses in selected tertiary hospitals in Laguna and its correlation to demographic data, work environment, client environment, and personal environment. METHOD: This study used an exploratory correlational research design to explore and determine the level of awareness of compassion fatigue, vicarious trauma, and burnout among nurses working in the emergency department of selected tertiary hospitals in Laguna. The research utilized exploratory surveys and questionnaire such as the Professional Quality of Life Scale Version 5 (ProQOL) by Stamm (2012). RESULT: Among 129 nurse respondents from the emergency departments of selected tertiary hospitals in Laguna, majority were working in private hospitals than public hospitals. Most of them were 20 – 29 years old, female, and mostly single. Majority of them have worked as a nurse and as an emergency room nurse for 0 – 5 years. The respondents worked for 32 hours or more per week and rendered overtime work for more than 16 hours or less. They also worked extra shifts of more than once per month. Given this work schedule, the respondents rarely engaged in physical activity. Furthermore, the respondents reported that they have a supportive work environment and colleagues that demonstrated positive attitude towards work. CONCLUSION: Nurses in the emergency department of selected tertiary hospitals in Laguna had average levels of compassion fatigue, vicarious trauma, and burnout. The researcher also concluded that there were significant relationships among compassion fatigue and hospital sector, parent, relationship status, and positive attitude. Therefore, nurses who worked in private hospitals, who were single, childless, and with colleagues that demonstrated a positive attitude towards work had a significant relationship to compassion fatigue. This conclusion was similar to the findings for vicarious trauma and burnout. The study also showed that age and years of experience as a nurse had a significant relationship between vicarious trauma and burnout. Therefore, 20 -29 years old nurses and those with 0 – 5 years’ work experience were significantly related to vicarious trauma and burnout.

description: Masters Thesis
Star Formation in NGC 5194 (M51a). II. The Spatially-Resolved Star Formation Law
Creators: name: Kennicutt, Robert C.
name: Calzetti, Daniela
name: Walter, Fabian
name: Helou, George
name: Hollenbach, David J.
name: Armus, Lee
name: Bendo, George
name: Dale, Daniel A.
name: Draine, Bruce T.
name: Engelbracht, Charles W.
name: Gordon, Karl D.
name: Prescott, Moire K. M.
name: Regan, Michael W.
name: Thornley, Michele D.
name: Bot, Caroline
name: Brinks, Elias
name: de Blok, Erwin
name: de Mello, Duilia
name: Meyer, Martin
name: Moustakas, John
name: Murphy, Eric J.
name: Sheth, Kartik
name: Smith, J. D. T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have studied the relationship between the star formation rate (SFR) surface density and gas surface density in the spiral galaxy M51a (NGC 5194), using multi-wavelength data obtained as part of the Spitzer Infrared Nearby Galaxies Survey (SINGS). We introduce a new SFR index based on a linear combination of H-alpha emission-line and 24 micron continuum luminosities, that provides reliable extinction-corrected ionizing fluxes and SFR densities over a wide range of dust attenuations. The combination of these extinction-corrected SFR densities with aperture synthesis HI and CO maps has allowed us to probe the form of the spatially-resolved star formation law on scales of 0.5 to 2 kpc. We find that the resolved SFR vs gas surface density relation is well represented by a Schmidt power law, which is similar in form and dispersion to the disk-averaged Schmidt law. We observe a comparably strong correlation of the SFR surface density with the molecular gas surface density, but no significant correlation with the surface density of atomic gas. The best-fitting slope of the Schmidt law varies from N = 1.37 to 1.56, with zeropoint and slope that change systematically with the spatial sampling scale. We tentatively attribute these variations to the effects of areal sampling and averaging of a nonlinear intrinsic star formation law. Our data can also be fitted by an alternative parametrization of the SFR surface density in terms of the ratio of gas surface density to local dynamical time, but with a considerable dispersion.
description: 46 pages, 10 figures, accepted for publication in The Astrophysical Journal
The hook fusion procedure for Hecke algebras
Creators: name: Grime, James
Publisher: name: arXiv
Year: 2007
Subjects: subject: Representation Theory (math.RT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We derive a new expression for the q-analogue of the Young symmetrizer which generate irreducible representations of the Hecke algebra. We obtain this new expression using Cherednik's fusion procedure. However, instead of splitting Young diagrams into their rows or columns, we consider their principal hooks. This minimises the number of auxiliary parameters needed in the fusion procedure.
description: 19 pages
Benchmark study of Nagaoka ferromagnetism by spin-adapted full configuration interaction quantum Monte Carlo
Creators: name: Yun, Sujun
name: Dobrautz, Werner
name: Luo, Hongjun
name: Alavi, Ali
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate Nagaoka ferromagnetism in the two-dimensional Hubbard model with one hole using the spin-adapted ($SU(2)$ conserving) full configuration interaction quantum Monte Carlo method. This methodology gives us access to the ground state energies of all possible spin states $S$ of finite Hubbard lattices, here obtained for lattices up to 24 sites, for various interaction strengths ($U$). The critical interaction strength, $U_c$, at which the Nagaoka transition occurs is determined for each lattice and is found to be proportional to the lattice size for the larger lattices. Below $U_c$ the overall ground states are found to favour the minimal total spin ($S=\frac 1 2$), and no intermediate spin state is found to be the overall ground state on lattices larger than 16 sites. However, at $U_c$, the energies of all the spin states are found to be nearly degenerate, implying that large fluctuations in total spin can be expected in the vicinity of the Nagaoka transition.
การศึกษาแบบจำลองการอบแห้งชั้นบางของพริกขี้หนู
Creators: name: นพมาศ ประทุมสูตร
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยเทคโนโลยีราชมงคลธัญบุรี
Year: 2021
Subjects: แบบจำลอง
การอบแห้งชั้นบาง
พริกขี้หนู
อัตราส่วนความชื้น

description: Journal of Applied Research on Science and Technology (JARST), 20, 2, 137-146
QCD phase transition drives supernova explosion of a very massive star
Creators: name: Fischer, Tobias
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The nature of core-collapse supernova (SN) explosions is yet incompletely understood. The present article revisits the scenario in which the release of latent heat due to a first-order phase transition, from normal nuclear matter to the quark-gluon plasma, liberates the necessary energy to explain observed SN explosions. Here, the role of the metallicity of the stellar progenitor is investigated, comparing a solar metallicity and a low-metallicity case, both having a zero-age main sequence (ZAMS) mass of 75 $M_\odot$. It is found that low-metallicity models belong exclusively to the failed SN branch, featuring the formation of black holes without explosions. It excludes this class of massive star explosions as possible site for the nucleosynthesis of heavy elements at extremely low metallicity, usually associated with the early universe.
description: 13 pages, 7 figures, published in European Physical Journal A Topical Issue 'CompOSE: a repository for Neutron Star Equations of State and Transport Properties'
Retrograde resonances in compact multi-planetary systems: a feasible stabilizing mechanism
Creators: name: Gayon, Julie
name: Bois, Eric
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Multi-planet systems detected until now are in most cases characterized by hot-Jupiters close to their central star as well as high eccentricities. As a consequence, from a dynamical point of view, compact multi-planetary systems form a variety of the general N-body problem (with N >= 3), whose solutions are not necessarily known. Extrasolar planets are up to now found in prograde (i.e. direct) orbital motions about their host star and often in mean-motion resonances (MMR). In the present paper, we investigate a theoretical alternative suitable for the stability of compact multi-planetary systems. When the outer planet moves on a retrograde orbit in MMR with respect to the inner planet, we find that the so-called retrograde resonances present fine and characteristic structures particularly relevant for dynamical stability. We show that retrograde resonances and their resources open a family of stabilizing mechanisms involving specific behaviors of apsidal precessions. We also point up that for particular orbital data, retrograde MMRs may provide more robust stability compared to the corresponding prograde MMRs.
description: 5 pages, 3 figures, 2 tables, in: Exoplanets: Detection, Formation and Dynamics, Cambridge University Press, accepted, in press
title: Making fossils at home
Creators: name: J., Fayle
Publisher: name: Commonwealth of Australia (Geoscience Australia)
Year: 2021
Subjects: subject: EDUCATION
subject: EARTH SCIENCES
subject: Fossil
subject: Activity sheet
subject: Body fossil
subject: Trace fossil
subject: Classroom activity
subject: Do it yourself
subject: DIY
subject: Published_External

description: Educational resource and instructions to make your own fossil out of every day materials.
Burst firing is a neural code in an insect auditory system
Creators: name: Eyherabide, Hugo G.
name: Rokem, Ariel
name: Herz, Andreas V. M.
name: Samengo, Ines
Publisher: name: arXiv
Year: 2008
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: Various classes of neurons alternate between high-frequency discharges and silent intervals. This phenomenon is called burst firing. To analyze burst activity in an insect system, grasshopper auditory receptor neurons were recorded in vivo for several distinct stimulus types. The experimental data show that both burst probability and burst characteristics are strongly influenced by temporal modulations of the acoustic stimulus. The tendency to burst, hence, is not only determined by cell-intrinsic processes, but also by their interaction with the stimulus time course. We study this interaction quantitatively and observe that bursts containing a certain number of spikes occur shortly after stimulus deflections of specific intensity and duration. Our findings suggest a sparse neural code where information about the stimulus is represented by the number of spikes per burst, irrespective of the detailed interspike-interval structure within a burst. This compact representation cannot be interpreted as a firing-rate code. An information-theoretical analysis reveals that the number of spikes per burst reliably conveys information about the amplitude and duration of sound transients, whereas their time of occurrence is reflected by the burst onset time. The investigated neurons encode almost half of the total transmitted information in burst activity.
description: 30 pages, 10 figures, 1 table. See published version in http://www.frontiersin.org/computationalneuroscience/paper/10.3389/neuro.10/003.2008/
Direct construction of the effective action of chiral gauge fermions in the anomalous sector
Creators: name: Salcedo, L. L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The anomaly implies an obstruction to a fully chiral covariant calculation of the effective action in the abnormal parity sector of chiral theories. The standard approach then is to reconstruct the anomalous effective action from its covariant current. In this work we use a recently introduced formulation which allows to directly construct the non trivial chiral invariant part of the effective action within a fully covariant formalism. To this end we develop an appropriate version of Chan's approach to carry out the calculation within the derivative expansion. The result to four derivatives, i.e., to leading order in two and four dimensions and next-to-leading order in two dimensions, is explicitly worked out. Fairly compact expressions are found for these terms.
description: 19 pages, revtex, no figures. Writing improved. (Refers to arXiv:0807.1696.)
Additional file 1 of A novel transition clinic structure for adolescent and young adult patients with childhood onset rheumatic disease improves transition outcomes
Creators: name: Overbury, Rebecca S.
name: Huynh, Kelly
name: Bohnsack, John
name: Frech, Tracy
name: Hersh, Aimee
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Geology
subject: FOS: Earth and related environmental sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1. Transition Policy
Axion-CMB Scenario in Supercooled Universe
Creators: name: Iso, Satoshi
name: Kawana, Kiyoharu
name: Shimada, Kengo
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Axion-CMB scenario is an interesting possibility to explain the temperature anisotropy of the cosmic microwave background (CMB) by primordial fluctuations of the QCD axion \cite{Iso:2020pzv}. In this scenario, fluctuations of radiations are generated by an energy exchange between axions and radiations, which results in the correlation between the primordial axion fluctuations and the CMB anisotropies. Consequently, the cosmological observations stringently constrain a model of the axion and the early history of the universe. In particular, we need a large energy fraction $Ω_A^{}$ of the axion at the QCD phase transition, but it must become tiny at the present universe to suppress the isocurvature power spectrum. One of natural cosmological scenarios to realize such a situation is the thermal inflation which can sufficiently dilute the axion abundance. Thermal inflation occurs in various models. In this paper, we focus on a classically conformal (CC) $B$-$L$ model with a QCD axion. In this model, the early universe undergoes a long supercooling era of the $B$-$L$ and electroweak symmetries, and thermal inflation naturally occurs. Thus it can be a good candidate for the axion-CMB scenario. But the axion abundance at the QCD transition is shown to be insufficient in the original CC $B$-$L$ model. To overcome the situation, we extend the model by introducing $N$ scalar fields $S$ (either massive or massless) and consider a novel cosmological history such that the $O(N)$ and the $B$-$L$ sectors evolve almost separately in the early universe. We find that all the necessary conditions for the axion-CMB scenario can be satisfied in some parameter regions for massless $S$ fields, typically $N\sim 10^{19}$ and the mass of $B$-$L$ gauge boson around $5-10$ TeV.
description: 33 pages, 6 figures