cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Innovation Pursuit: A New Approach to Subspace Clustering
Creators: name: Rahmani, Mostafa
name: Atia, George
Publisher: name: arXiv
Year: 2015
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Information Retrieval (cs.IR)
subject: Information Theory (cs.IT)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: In subspace clustering, a group of data points belonging to a union of subspaces are assigned membership to their respective subspaces. This paper presents a new approach dubbed Innovation Pursuit (iPursuit) to the problem of subspace clustering using a new geometrical idea whereby subspaces are identified based on their relative novelties. We present two frameworks in which the idea of innovation pursuit is used to distinguish the subspaces. Underlying the first framework is an iterative method that finds the subspaces consecutively by solving a series of simple linear optimization problems, each searching for a direction of innovation in the span of the data potentially orthogonal to all subspaces except for the one to be identified in one step of the algorithm. A detailed mathematical analysis is provided establishing sufficient conditions for iPursuit to correctly cluster the data. The proposed approach can provably yield exact clustering even when the subspaces have significant intersections. It is shown that the complexity of the iterative approach scales only linearly in the number of data points and subspaces, and quadratically in the dimension of the subspaces. The second framework integrates iPursuit with spectral clustering to yield a new variant of spectral-clustering-based algorithms. The numerical simulations with both real and synthetic data demonstrate that iPursuit can often outperform the state-of-the-art subspace clustering algorithms, more so for subspaces with significant intersections, and that it significantly improves the state-of-the-art result for subspace-segmentation-based face clustering.
Spatial-temporal nexus of economic complexity interaction with human capital and political stability on environmental quality and their possible causes of change for BRI countries
Creators: name: Ashraf, Junaid
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Neuroscience
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Marine Biology
subject: Mental Health

description: Environmental degradation (ED) and the factors that influence it are being addressed on several levels, including individual, domestic, and geographical. Our research collaborates in two ways. First, it investigates the effect of economic complexity (EC) interaction with human capital (HC) and political stability on the environmental quality of 55 Belt and Road Initiative (BRI) countries. Second, spatial impacts are considered when calculating variables influencing environmental quality at the geographical level. The relevance of geographical effects is determined using different diagnostic procedures, and direct and spillover effects are evaluated using the Spatial Durbin Model to examine the phenomena. Political stability reduces ED and improves ecological sustainability by regulating EC and ED. Surprisingly, the spatial interaction term of HC and EC indicates that EC improves environmental quality through the HC channel in the native country and its neighbors. From these findings, policymakers might gain new insights and enhance environmental quality in BRI countries.
Additional file 1 of Comparison of nutrition care services for adult obesity at primary care in two different periods in Saudi Arabia
Creators: name: Aljaaly, Elham A.
name: Khalifa, Nahlaa A.
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Cell Biology
classificationCode: 59999
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
classificationCode: 69999
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 1.
Magnetic structures of rare earth intermetallic compounds RCuAs$_2$ (R = Pr, Nd, Tb, Dy, Ho, and Yb)
Creators: name: Zhao, Y.
name: Lynn, J. W.
name: Thakur, Gohil S.
name: Haque, Zeba
name: Gupta, L. C.
name: Ganguli, A K
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Neutron scattering studies have been carried out on polycrystalline samples of a series of rare earth intermetallic compounds RCuAs$_2$ (R = Pr, Nd, Dy, Tb, Ho and Yb) as a function of temperature to determine the magnetic structures and the order parameters. These compounds crystallize in the ZrCuSi$_2$ type structure, which is similar to that of the RFeAsO (space group P4/nmm) class of iron-based superconductors. PrCuAs$_2$ develops commensurate magnetic order with K = (0, 0, 0.5) below T$_N$ = 6.4 (2) K, with the ordered moments pointing along the c-axis. The irreducible representation analysis shows either a $Γ$$^1_2$ or $Γ$$^1_3$ representation. NdCuAs$_2$ and DyCuAs$_2$ order below T$_N$ = 3.54(5) K and T$_N$ = 10.1(2) K, respectively, with the same ordering wave vector but the moments lying in the a-b plane (with a $Γ$$^2_9$ or $Γ$$^2_{10}$ representation). TbCuAs$_2$ and HoCuAs$_2$ exhibit incommensurate magnetic structures below T$_N$ = 9.44(7) and 4.41(2) K, respectively. For TbCuAs$_2$, two separate magnetic ordering wave vectors are established as K$_{1(Tb)}$ = (0.240,0.155,0.48) and K$_{2(Tb)}$ = (0.205, 0.115, 0.28), whereas HoCuAs$_2$ forms a single K$_{(Ho)}$ = (0.121, 0.041, 0.376) magnetic structure with 3$^{rd}$ order harmonic magnetic peaks. YbCuAs$_2$ does not exhibit any magnetic Bragg peaks at 1.5 K, while susceptibility measurements indicate an antiferromagnetic-like transition at 4 K, suggesting that either the ordering is not long range in nature or the ordered moment is below the sensitivity limit of $\approx$ 0.2 $μ_B$.
description: 8 figures
Automorphism group of the complete alternating group graph
Creators: name: Huang, Xueyi
name: Huang, Qiongxiang
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C25

description: Let $S_n$ and $A_n$ denote the symmetric group and alternating group of degree $n$ with $n\geq 3$, respectively. Let $S$ be the set of all $3$-cycles in $S_n$. The \emph{complete alternating group graph}, denoted by $CAG_n$, is defined as the Cayley graph $\mathrm{Cay}(A_n,S)$ on $A_n$ with respect to $S$. In this paper, we show that $CAG_n$ ($n\geq 4$) is not a normal Cayley graph. Furthermore, the automorphism group of $CAG_n$ for $n\geq 5$ is obtained, which equals to $\mathrm{Aut}(CAG_n)=(R(A_n)\rtimes \mathrm{Inn}(S_n))\rtimes \mathbb{Z}_2\cong (A_n\rtimes S_n)\rtimes \mathbb{Z}_2$, where $R(A_n)$ is the right regular representation of $A_n$, $\mathrm{Inn}(S_n)$ is the inner automorphism group of $S_n$, and $\mathbb{Z}_2=\langle h\rangle$, where $h$ is the map $α\mapstoα^{-1}$ ($\forall α\in A_n$).
description: 9 pages, 1 figure
Characterization of Fentanyl and Fentanyl Analogs by Liquid Chromatography Triple Quadrupole Mass Spectrometry
Creators: name: Meister, Samantha Lea
Publisher: name: University of Illinois at Chicago
Year: 2023

description: The purpose of this graduate thesis is the characterization of fentanyl and fentanyl analogues using Liquid Chromatography – Triple Quadrupole Mass Spectrometry instrumentation. The rise in fentanyl use has had a large impact on America and fentanyl analogues are appearing more quickly. Research on these drugs takes time and is more difficult to stay current when new analogues are appearing on the streets every day. Detection of these compounds are essential for law enforcement personnel, hospital personnel, and forensic scientists. This thesis focuses on testing 152 fentanyl analogues on the LC-QQQ to see if the instrumentation would be beneficial as primary use in these different fields of work. Current techniques used to confirm the presence of fentanyl derivatives include GC-MS techniques and LC-MS techniques. The results indicate that liquid chromatography triple quadrupole mass spectrometry instrumentation provided retention times for each fentanyl derivative and proper chromatography was discovered. Therefore, liquid chromatography triple quadrupole mass spectrometry is a useful technique to identify fentanyl analogues in a laboratory setting.
Pubblicazioni in rivista 2022 Istituto di Scienze delle Produzioni Alimentari
Creators: name: Vecchio, Pasquale Del
Publisher: name: Zenodo
Year: 2023
Subjects: Bibliometrics, Open Access, Open Science

description: Il report ha lo scopo di quantificare e qualificare, usando indicatori bibliometrici e di altro tipo, la produzione scientifica dell'Istituto. In riferimento ai prodotti di prima fascia (articoli in rivista, letter to editor, review, editoriale in rivista) viene analizzato l'andamento rispetto all'anno precedente e alla media dell'ultimo quinquennio anche attraverso il supporto di grafici e tabelle. Viene fatta una distinzione tra articoli in rivista ISI e NON, si analizza l'andamento del numero di pubblicazioni in riviste nei diversi Quartili (Q1,Q2,Q3,Q4) per determinarne bibliometricamente il livello qualitativo e vengono segnalate le pubblicazioni in riviste che si attestano oltre il 90° percentile, vale a dire articoli pubblicati nella top 10 delle riviste a maggiore impatto per area/categoria (considerando solo quelle alle quali è stato possibile attribuire un Quartile) anche in relazione all'andamento temporale. Ulteriore raccolta ed analisi viene fatta in relazione alla tipologia di accesso alla pubblicazione scientifica (Open Access) per valutare il grado di apertura della ricerca scientifica prodotta, ma anche per fornire supporto ai ricercatori ed al Direttore per individuare strategie, a livello d'Istituto, di budgeting e portafolio management rispetto al costo finanziario sostenuto per il pagamento degli oneri previsti per le APC (Article Processing Charges). Il report inoltre fornisce indicazioni sul numero di lavori che vedono la partecipazione nell'autorship, di autori ISPA come primo o corresponding author e riporta il numero di pubblicazioni in collaborazione con autori appartenenti ad imprese private italiane e straniere, indicatore sempre più utilizzato nella valutazione dell'impatto dei progetti europei ed internazionali. In fine, le pubblicazioni vengono classificate nelle diverse subject-category, per la definizione dell'andamento dell'Istituto rispetto alle aree della ricerca nelle quali si caratterizza maggiormente.
Polynomial Spectrum of Gamma Ray from Dark Matter
Creators: name: Tang, Yong
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In this study, we present some general features of gamma-ray spectra from dark matter. We find that the spectrum with sharp features could appear in a wide class of dark matter models and mimic the gamma line signals. If all other physical degrees of freedom are heavy or effectively decoupled, the resulting gamma ray from dark matter decay or annihilation would generally have polynomial-type spectra or power-law with positive index. We illustrate our findings in a model-independent framework with generic kinematic analysis. Similar results can also apply for cosmic ray or neutrino cases.
description: 12 pages, 3 figures, references and discussions updated, published version
ALMA Cycle 1 Observations of the HH46/47 Molecular Outflow: Structure, Entrainment and Core Impact
Creators: name: Zhang, Yichen
name: Arce, Hector G.
name: Mardones, Diego
name: Cabrit, Sylvie
name: Dunham, Michael M.
name: Garay, Guido
name: Noriega-Crespo, Alberto
name: Offner, Stella S. R.
name: Raga, Alejandro C.
name: Corder, Stuartt A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present ALMA Cycle 1 observations of the HH46/47 molecular outflow using combined 12m array and ACA observations. The improved angular resolution and sensitivity of our multi-line maps reveal structures that help us study the entrainment process in much more detail and allow us to obtain more precise estimates of outflow properties than previous observations. We use 13CO(1-0) and C18O(1-0) emission to correct for the 12CO(1-0) optical depth to accurately estimate the outflow mass, momentum and kinetic energy. This correction increases the estimates of the mass, momentum and kinetic energy by factors of about 9, 5 and 2, respectively, with respect to estimates assuming optically thin emission. The new 13CO and C18O data also allow us to trace denser and slower outflow material than that traced by the 12CO maps, and they reveal an outflow cavity wall at very low velocities (as low as 0.2km/s with respect to the cores central velocity). Adding with the slower material traced only by 13CO and C18O, there is another factor of 3 increase in the mass estimate and 50% increase in the momentum estimate. The estimated outflow properties indicate that the outflow is capable of dispersing the parent core within the typical lifetime of the embedded phase of a low-mass protostar, and that it is responsible for a core-to-star efficiency of 1/4 to 1/3. We find that the outflow cavity wall is composed of multiple shells associated with a series of jet bow-shock events. Within about 3000AU of the protostar the 13CO and C18O emission trace a circumstellar envelope with both rotation and infall motions, which we compare with a simple analytic model. The CS(2-1) emission reveals tentative evidence of a slowly-moving rotating outflow, which we suggest is entrained not only poloidally but also toroidally by a disk wind that is launched from relatively large radii from the source.
description: Accepted for publication in ApJ. 26 pages, 20 figures
Fluids, Elasticity, Geometry, and the Existence of Wrinkled Solutions
Creators: name: Acharya, Amit
name: Chen, Gui-Qiang
name: Li, Siran
name: Slemrod, Marshall
name: Wang, Dehua
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: Primary: 53C42, 53C21, 53C45, 58J32, 35L65, 35M10, Secondary: 76F02, 35D30, 35Q31, 35Q35, 35L45, 57R40, 57R42, 76H05, 76N10

description: We are concerned with underlying connections between fluids, elasticity, isometric embedding of Riemannian manifolds, and the existence of wrinkled solutions of the associated nonlinear partial differential equations. In this paper, we develop such connections for the case of two spatial dimensions, and demonstrate that the continuum mechanical equations can be mapped into a corresponding geometric framework and the inherent direct application of the theory of isometric embeddings and the Gauss-Codazzi equations through examples for the Euler equations for fluids and the Euler-Lagrange equations for elastic solids. These results show that the geometric theory provides an avenue for addressing the admissibility criteria for nonlinear conservation laws in continuum mechanics.
description: 53 pages, 1 figure, Archive for Rational Mechanics and Analysis, 2017
Inradius collapsed manifolds
Creators: name: Yamaguchi, Takao
name: Zhang, Zhilang
Publisher: name: arXiv
Year: 2015
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C20, 53C23

description: In this paper, we study collapsed manifolds with boundary, where we assume a lower sectional curvature bound, two sides bounds on the second fundamental forms of boundaries and upper diameter bound. Our main concern is the case when inradii of manifolds converge to zero. This is a typical case of collapsing manifolds with boundary. We determine the limit spaces of inradius collapsed manifolds as Alexandrov spaces with curvature uniformly bounded below. When the limit space has co-dimension one, we completely determined the topology of inradius collapsed manifold in terms of singular $I$-bundles. Genral inradius collapse to almost regular spaces are also characterized. In the general case of unbounded diameters, we prove that the number of boundary components of inradius collapsed manifolds is at most two, where the disconnected boundary happens if and only if the manifold has a topological product structure.
description: 57 pages, mainly Sections 4,6 and 7 revised
Temporal correlations of the running maximum of a Brownian trajectory
Creators: name: Benichou, O.
name: Krapivsky, P. L.
name: Mejia-Monasterio, C.
name: Oshanin, G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Probability (math.PR)
subject: Statistics Theory (math.ST)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study the correlations between the maxima $m$ and $M$ of a Brownian motion (BM) on the time intervals $[0,t_1]$ and $[0,t_2]$, with $t_2>t_1$. We determine exact forms of the distribution functions $P(m,M)$ and $P(G = M - m)$, and calculate the moments $\mathbb{E}\{\left(M - m\right)^k\}$ and the cross-moments $\mathbb{E}\{m^l M^k\}$ with arbitrary integers $l$ and $k$. We show that correlations between $m$ and $M$ decay as $\sqrt{t_1/t_2}$ when $t_2/t_1 \to \infty$, revealing strong memory effects in the statistics of the BM maxima. We also compute the Pearson correlation coefficient $ρ(m,M)$, the power spectrum of $M_t$, and we discuss a possibility of extracting the ensemble-averaged diffusion coefficient in single-trajectory experiments using a single realization of the maximum process.
description: 5 pages, 5 figures
"Grausenhaft war ist diese wächserne Geschichte" : die Wachsfiguren von Don Gaetano Zumbo zwischen Kunst und medizinischer Anatomie
Creators: name: Wolkenhauer, Anja
Publisher: name: Universität Tübingen
Year: 2001
Subjects: subject: Kunstgeschichte
subject: 700

description: Zweitveröffentlichung
Ensemble seismic study of red-clump stars
Creators: name: Noll, Anthony
name: Basu, Sarbani
name: Hekker, Saskia
Publisher: name: Zenodo
Year: 2024

description: Stars in the Red Clump (RC) are high-metallicity, low-mass, core-helium burning stars which went through the helium flash. They are astrophysically important, since they can be used as standard candles that trace the chemical evolution of the Galaxy. Yet, due to the many uncertainties associated with the physical processes that happen during the helium flash, as well as in the central regions of RC stars, modelling these stars is particularly challenging. In this work, we use asteroseismology to constrain these processes, with a focus on nuclear reactions and convection. RC stars are solar-like oscillators and exhibit mixed modes, whose period spacing is a very good probe of the properties of the region around the convective core. We performed an ensemble seismic study of the RC stars observed by Kepler and compared the observed period spacing distribution to a simulated distribution. This simulated distribution incorporates the mass as well as the metallicity distribution of the observed stars; for this we use models computed with the MESA stellar evolution code. These comparisons allow us to test different prescriptions of core boundary mixing, as well as different values of the carbon-alpha nuclear reaction rate. Notably, we find that assuming mode trapping in the semiconvective region as well as a nominal carbon-alpha nuclear reaction rate yields a period spacing distribution that is compatible with that of observations.
Aggregate effects of advertising decisions: a complex systems look at search engine advertising via an experimental study
Creators: name: Yang, Yanwu
name: Li, Xin
name: Jansen, Bernard J.
name: Zeng, Daniel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences
subject: I.2.6
subject: 68Txx

description: Purpose: We model group advertising decisions, which are the collective decisions of every single advertiser within the set of advertisers who are competing in the same auction or vertical industry, and examine resulting market outcomes, via a proposed simulation framework named EXP-SEA (Experimental Platform for Search Engine Advertising) supporting experimental studies of collective behaviors in the context of search engine advertising. Design: We implement the EXP-SEA to validate the proposed simulation framework, also conduct three experimental studies on the aggregate impact of electronic word-of-mouth, the competition level, and strategic bidding behaviors. EXP-SEA supports heterogeneous participants, various auction mechanisms, and also ranking and pricing algorithms. Findings: Findings from our three experiments show that (a) both the market profit and advertising indexes such as number of impressions and number of clicks are larger when the eWOM effect presents, meaning social media certainly has some effect on search engine advertising outcomes, (b) the competition level has a monotonic increasing effect on the market performance, thus search engines have an incentive to encourage both the eWOM among search users and competition among advertisers, and (c) given the market-level effect of the percentage of advertisers employing a dynamic greedy bidding strategy, there is a cut-off point for strategic bidding behaviors. Originality: This is one of the first research works to explore collective group decisions and resulting phenomena in the complex context of search engine advertising via developing and validating a simulation framework that supports assessments of various advertising strategies and estimations of the impact of mechanisms on the search market.
description: 26 pages, 7 figures, 5 tables
Relaxion window
Creators: name: Kobayashi, Tatsuo
name: Seto, Osamu
name: Shimomura, Takashi
name: Urakawa, Yuko
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate cosmological constraints on the original relaxion scenario proposed by Graham, Kaplan and Rajendran. We first discuss the appropriate sign choice of the terms in the scalar potential, when the QCD axion is the relaxion with a relaxion-inflaton coupling proposed in the original paper. We next derive the cosmologically consistent ranges of the mass and a coupling of the relaxion for both the QCD relaxion and non-QCD relaxion. The mass range is obtained by $10^{-5}$ eV $\ll m_ϕ \lesssim 10^4$ eV. We also find that a strong correlation between the Hubble parameter at the relaxion stabilization and the scale $Λ$ of non-QCD strong dynamics, which generates the non-perturbative relaxion cosine potential. For a higher relaxion mass, a large scale $Λ$ becomes available. However, for its lower mass, $Λ$ should be small and constructing such a particle physics model is challenging.
description: 14 pages, 3 figures, discussion added, the final journal version
Wave mechanics of the hydrogen atom
Creators: name: Ogilvie, J. F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Physics (physics.gen-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The hydrogen atom is a system amenable to an exact treatment within Schroedinger's formulation of quantum mechanics according to coordinates in four systems -- spherical polar, paraboloidal, ellipsoidal and spheroconical coordinates; the latter solution is reported for the first time. Applications of these solutions include angular momenta, a quantitative calculation of the absorption spectrum and accurate plots of surfaces of amplitude functions. The shape of an amplitude function, and even the quantum numbers in a particular set to specify such an individual function, depend on the coordinates in a particular chosen system, and are therefore artefacts of that particular coordinate representation within wave mechanics. All discussion of atomic or molecular properties based on such shapes or quantum numbers therefore lacks general significance
description: 24 pages, one figure and 26 cited papers
Additional file 1 of Real-time observation of phase transition from layered to spinel phase under electron beam irradiation
Creators: name: Seo, Jong Hyeok
name: Park, Joon Yong
name: Kim, Yong-Il
name: Nam, Ki Min
name: Jang, Jae Hyuck
name: Kwon, Ji-Hwan
Publisher: name: figshare
Year: 2023
Subjects: subject: Biophysics
classificationCode: 29999
subject: Physical Sciences not elsewhere classified
classificationCode: 20199
subject: Astronomical and Space Sciences not elsewhere classified
classificationCode: 69999
subject: Biological Sciences not elsewhere classified
classificationCode: 80699
subject: Information Systems not elsewhere classified
classificationCode: 19999
subject: Mathematical Sciences not elsewhere classified

description: Additional file 1: Supplementary Information.
The idempotent generated subsemigroup of the Kauffman monoid
Creators: name: Dolinka, Igor
name: East, James
Publisher: name: arXiv
Year: 2016
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: We characterise the elements of the (maximum) idempotent generated subsemigroup of the Kauffman monoid in terms of combinatorial data associated to certain normal forms. We also calculate the smallest size of a generating set and idempotent generating set.
description: 10 pages, 1 figure; v2 incorporates referee's suggestions (to appear in Glasgow Math J)
Hierarchical Sparse Modeling: A Choice of Two Group Lasso Formulations
Creators: name: Yan, Xiaohan
name: Bien, Jacob
Publisher: name: arXiv
Year: 2015
Subjects: subject: Methodology (stat.ME)
subject: Statistics Theory (math.ST)
subject: Computation (stat.CO)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Demanding sparsity in estimated models has become a routine practice in statistics. In many situations, we wish to require that the sparsity patterns attained honor certain problem-specific constraints. Hierarchical sparse modeling (HSM) refers to situations in which these constraints specify that one set of parameters be set to zero whenever another is set to zero. In recent years, numerous papers have developed convex regularizers for this form of sparsity structure, which arises in many areas of statistics including interaction modeling, time series analysis, and covariance estimation. In this paper, we observe that these methods fall into two frameworks, the group lasso (GL) and latent overlapping group lasso (LOG), which have not been systematically compared in the context of HSM. The purpose of this paper is to provide a side-by-side comparison of these two frameworks for HSM in terms of their statistical properties and computational efficiency. We call special attention to GL's more aggressive shrinkage of parameters deep in the hierarchy, a property not shared by LOG. In terms of computation, we introduce a finite-step algorithm that exactly solves the proximal operator of LOG for a certain simple HSM structure; we later exploit this to develop a novel path-based block coordinate descent scheme for general HSM structures. Both algorithms greatly improve the computational performance of LOG. Finally, we compare the two methods in the context of covariance estimation, where we introduce a new sparsely-banded estimator using LOG, which we show achieves the statistical advantages of an existing GL-based method but is simpler to express and more efficient to compute.
description: 30 pages, 13 figures
Planetary Genealogy
Creators: name: Burkhardt, Christoph
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The detection of exoplanets and accretion disks around newborn stars has spawned new ideas and models of how our Solar System formed and evolved. Meteorites as probes of geologic deep time can provide ground truth to these models. In particular, stable isotope anomalies in meteorites have recently emerged as key tracers of material flow in the early Solar System, allowing cosmochemists to establish a "planetary isotopic genealogy". Although not complete, this concept substantially advanced our understanding of Solar System evolution, from the collapse of the Sun's parental molecular cloud to the accretion of the planets.
description: Overview article published in the Elements Magazine
Retiring from academia in the Republic of Ireland: a qualitative study of women academics’experiences from an occupational perspective
Creators: name: CAHILL, MAIREAD
Publisher: name: University of Limerick
Year: 2023
Subjects: subject: Health sciences
subject: FOS: Health sciences

description: Background The retirement landscape is evolving globally linked with policy changes in response to population aging and increased longevity. Aim The overarching aim of this thesis was to explore women academics’ experiences of the retirement process from an occupational perspective. Methods Firstly, the qualitative academic retirement literature was synthesised using a meta-ethnographic approach. Secondly, based on the findings of the meta-ethnography, two longitudinal qualitative studies were undertaken to: (i) examine the pre and post-retirement experiences of women academics from an occupational perspective and (ii) explore the impact of retirement on a group of women academics retirees’ daily lives and relationships at two time points. Data were analysed using thematic analysis. Findings The meta-ethnography revealed that most academics continued with academic and professional activities in retirement and that women academics retirement experiences had received little attention. The longitudinal, qualitative studies found that most academics continued with research in retirement, that some resumed working in their pre-academic professional work, and that a minority completely detached from work on retirement. The studies revealed that some women faced issues of occupational injustice linked with mandatory retirement and lack of recognition for their continued research outputs post-retirement. Conclusion Overall, this thesis highlights the variety of ways that women academics transition to retirement. While most continued with research related occupations post-retirement, those who did not have active research profiles pre-retirement did not continue with academic activities. The findings suggest a need to offer equitable choices to academics in terms of retirement timing and retirement pathways. The findings highlight the importance of participation in meaningful occupations to facilitate the transition and occupational adaptation to retirement.
Additional file 1 of Hyperactivity in patients with narcolepsy and idiopathic hypersomnia: an exploratory study
Creators: name: Dodson, Caroline
name: Spruyt, Karen
name: Considine, Ciaran
name: Thompson, Emily
name: Ipsiroglu, Osman S.
name: Bagai, Kanika
name: Silvestri, Rosalia
name: Couvadelli, Barbara
name: Walters, Arthur S.
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Cancer
subject: Science Policy
classificationCode: 111714
subject: Mental Health

description: Additional file 1: Supplementary Table 1. Descriptive Means±standard deviations and proportions (%) above clinical cut-off score, of the ESS score, ISI score, PhQ-4 score, VAS sleepiness, and Digit Vigilance Test per patients on/off medication.
Microwave dynamics of high aspect ratio superconducting nanowires studied using self-resonance
Creators: name: Santavicca, Daniel F.
name: Adams, Jesse K.
name: Grant, Lierd E.
name: McCaughan, Adam N.
name: Berggren, Karl K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the microwave impedance of extremely high aspect ratio (length/width ~ 5,000) superconducting niobium nitride nanowires. The nanowires are fabricated in a compact meander geometry that is in series with the center conductor of a 50 ohm coplanar waveguide transmission line. The transmission coefficient of the sample is measured up to 20 GHz. At high frequency, a peak in the transmission coefficient is seen. Numerical simulations show that this is a half-wave resonance along the length of the nanowire, where the nanowire acts as a high impedance, slow wave transmission line. This resonance sets the upper frequency limit for these nanowires as inductive elements. Fitting simulations to the measured resonance enables a precise determination of the nanowire's complex sheet impedance at the resonance frequency. The real part is a measure of dissipation, while the imaginary part is dominated by kinetic inductance. We characterize the dependence of the sheet resistance and sheet inductance on both temperature and current and compare the results to recent theoretical predictions for disordered superconductors. These results can aid in the understanding of high frequency devices based on superconducting nanowires. They may also lead to the development of novel superconducting devices such as ultra-compact resonators and slow-wave structures.
Additional file 1 of A survey of the adaptive immune genes of the polka-dot batfish Ogcocephalus cubifrons
Creators: name: Swann, Jeremy B.
name: Grammer, Christiane
name: Schorpp, Michael
name: Boehm, Thomas
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine

description: Additional File 1: Supplementary Figure 2. Phylogenetic analysis of putative O. cubifrons Dntt and Polymerase μ (Polm) orthologues.
Dynamics of Generalised Derivations and Elementary Operators
Creators: name: Gilmore, Clifford
Publisher: name: arXiv
Year: 2016
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47A16, 47B47, 47B49, 47B20

description: We identify concrete examples of hypercyclic generalised derivations acting on separable ideals of operators and establish some necessary conditions for their hypercyclicity. We also consider the dynamics of elementary operators acting on particular Banach algebras, which reveals surprising hypercyclic behaviour on the space of bounded linear operators on the Banach space constructed by Argyros and Haydon.
description: 17 pages. Added some minor observations and examples. Corrected some typos
A Quirky Probe of Neutral Naturalness
Creators: name: Chacko, Zackaria
name: Curtin, David
name: Verhaaren, Christopher B.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the signals arising from top partner pair production at the LHC as a probe of theories of Neutral Naturalness. We focus on scenarios in which top partners carry electroweak charges, such as Folded SUSY or the Quirky Little Higgs. In this class of theories the top partners are pair produced as quirky bound states, since they are charged under a mirror color group whose lightest states are hidden glueballs. The quirks promptly de-excite and annihilate into glueballs, which decay back to SM fermions via Higgs mixing. This can give rise to spectacular signatures at the LHC, such displaced decays, or high-multiplicity prompt production of many hard $\bar b b$ or $τ^+ τ^-$ pairs. We show that signals arising from top partner pair production constitute the primary discovery channel for this class of theories in most regions of parameter space, and might provide the only experimental probe of scenarios with sub-cm glueball decay lengths. The measurement of top partner masses and couplings, which could be used to test the neutral naturalness mechanism directly, is also a tantalizing possibility.
description: 6 pages, 2 figures. v2 contains various clarifications compared to v1, no change in results
Additional file 2 of A survey of the adaptive immune genes of the polka-dot batfish Ogcocephalus cubifrons
Creators: name: Swann, Jeremy B.
name: Grammer, Christiane
name: Schorpp, Michael
name: Boehm, Thomas
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine

description: Additional File 2: Supplementary Figure 3. Assessment of O. cubifrons AID regions predicted to modulate catalytic function.
Impacts Of Public Policies On Schooling In Developing Contexts
Creators: name: Varghese, Vinitha Rachel
Publisher: name: University of Illinois at Chicago
Year: 2023

description: The literature on the impact of school expansionary policies has been extensively studied in various contexts. However, there is limited research on school contractionary policies and the impact of school access on children with disabilities. In my dissertation, I analyze the effects of a school consolidation policy on enrollment and achievement outcomes, and also of the right to education on enrollment among children with disabilities. In Chapter 2, I examine the impact of vertical school consolidation on school choice, dropouts, exam taking, and achievement by exploiting its staggered roll-out in the Indian state of Rajasthan. My analysis reveals that consolidation of government grade 1-5 schools with government grade 6-10 schools increases the average school size, number of classrooms, teachers, and grades in government schools. Furthermore, I find that the preference for government schools declines, particularly among grade 1-5 children, and the number of dropouts among grade 1-5 children increases. My results also demonstrate that consolidation does not affect the number of takers or high scorers in primary and middle school completion exams. My heterogeneity analyses show that the impact of consolidation does not vary by gender or by grade within the grade 1-5 or grade 6-8 groups. However, the negative impacts of school consolidation are more pronounced among children from Scheduled Caste households. In Chapter 3, I evaluate the impact of right to education from the passing of Right To Education (RTE) Act in India in 2009. India’s RTE Act guaranteed free education to children aged six to fourteen years including children with disabilities (CWD). Given that school participation deficit associated with disability is large, I provide results which are relieving to policy makers. I use an interrupted time series research design and find that the RTE Act led to a 60 percent increase in schooling among CWD within three years. The estimate is driven by enrollment across all grades. I also provide suggestive evidence that the estimate is not driven by an increase in the number of schools or in disable-friendly ramps within schools.
Entanglement Entropy in Jammed CFTs
Creators: name: Mefford, Eric
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct solutions to the Einstein equations for asymptotically locally Anti-de Sitter spacetimes with four, five, and six dimensional Reissner-Nordström boundary metrics. These spacetimes are gravitational duals to "jammed" CFTs on those backgrounds at infinite N and strong coupling. For these spacetimes, we calculate the boundary stress tensor as well as compute entanglement entropies for ball shaped regions as functions of the boundary black hole temperature $T_{BH}$. From this, we see how the CFT prevents heat flow from the black hole to the vacuum at spatial infinity. We also compute entanglement entropies for a three dimensional boundary black hole using the AdS C-metric. We compare our results to previous work done in similar spacetimes.
description: 42 pages, 11 figures, version to appear in JHEP
Additional file 3 of A survey of the adaptive immune genes of the polka-dot batfish Ogcocephalus cubifrons
Creators: name: Swann, Jeremy B.
name: Grammer, Christiane
name: Schorpp, Michael
name: Boehm, Thomas
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine

description: Additional File 3: Supplementary Figure 4. MHC1 sequence diversity.
A search for minimal 4d N=1 SCFT
Creators: name: Xie, Dan
name: Yonekura, Kazuya
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss a candidate for a minimal interacting 4-dimensional N=1 superconformal field theory (SCFT). The model contains a chiral primary operator u satisfying the chiral ring relation u^2=0, and its scaling dimension is Δ(u)=1.5. The model is derived by turning on a N=1 preserving deformation of N=2 A2 Argyres-Douglas theory. The central charges are given by (a,c)=(263/768, 271/768) ~ (0.342,0.353). There is no moduli space of vacua, no flavor symmetry, and the chiral ring is finite.
description: 4 pages, typos corrected
Additional file 4 of A survey of the adaptive immune genes of the polka-dot batfish Ogcocephalus cubifrons
Creators: name: Swann, Jeremy B.
name: Grammer, Christiane
name: Schorpp, Michael
name: Boehm, Thomas
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine

description: Additional File 4: Supplementary Figure 5. MHC2b sequence diversity.
Additional file 5 of A survey of the adaptive immune genes of the polka-dot batfish Ogcocephalus cubifrons
Creators: name: Swann, Jeremy B.
name: Grammer, Christiane
name: Schorpp, Michael
name: Boehm, Thomas
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine

description: Additional File 5: Supplementary Figure 1. Overview of adaptive immune system gene loss in anglerfish suborders.
Additional file 1 of Promising approaches for the assembly of the catalytically active, recombinant Desulfomicrobium baculatum hydrogenase with substitutions at the active site
Creators: name: Witkowska, Malgorzata
name: Jedrzejczak, Robert P.
name: Joachimiak, Andrzej
name: Cavdar, Onur
name: Malankowska, Anna
name: Skowron, Piotr M.
name: Zylicz-Stachula, Agnieszka
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Primer sequences, thermal cycling schedule and protein expression vectors.
Additional file 2 of Promising approaches for the assembly of the catalytically active, recombinant Desulfomicrobium baculatum hydrogenase with substitutions at the active site
Creators: name: Witkowska, Malgorzata
name: Jedrzejczak, Robert P.
name: Joachimiak, Andrzej
name: Cavdar, Onur
name: Malankowska, Anna
name: Skowron, Piotr M.
name: Zylicz-Stachula, Agnieszka
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: Aligned sequences of native and optimized synthetic genes.
Additional file 3 of Promising approaches for the assembly of the catalytically active, recombinant Desulfomicrobium baculatum hydrogenase with substitutions at the active site
Creators: name: Witkowska, Malgorzata
name: Jedrzejczak, Robert P.
name: Joachimiak, Andrzej
name: Cavdar, Onur
name: Malankowska, Anna
name: Skowron, Piotr M.
name: Zylicz-Stachula, Agnieszka
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 3: Detailed experimental results concerning cloning, expression and purification of the Dmb operon components. 1.1. Separate cloning of the Dmb operon components. 1.2. Production of protein complexes via two genes layouts. 1.3. Production of hydrogenase complex via co-expression of three-piece operon elements. 1.4. Production of hydrogenase complex via in vitro assembly. 1.5. Periplasmic transport signal modifications and large subunit truncation. 1.6. Production of hydrogenase complex via co-expression of two-piece operon elements. 1.7. Optimization of the small subunit solubility. 1.8. Hydrogenase assembly in optimized conditions. 1.9. Production of hydrogenase complex via expression of two-piece operon elements.
Additional file 4 of Promising approaches for the assembly of the catalytically active, recombinant Desulfomicrobium baculatum hydrogenase with substitutions at the active site
Creators: name: Witkowska, Malgorzata
name: Jedrzejczak, Robert P.
name: Joachimiak, Andrzej
name: Cavdar, Onur
name: Malankowska, Anna
name: Skowron, Piotr M.
name: Zylicz-Stachula, Agnieszka
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 4: Procedures for the solubilization of SH constructs and for in vitro Fe-S clusters insertion.
Additional file 5 of Promising approaches for the assembly of the catalytically active, recombinant Desulfomicrobium baculatum hydrogenase with substitutions at the active site
Creators: name: Witkowska, Malgorzata
name: Jedrzejczak, Robert P.
name: Joachimiak, Andrzej
name: Cavdar, Onur
name: Malankowska, Anna
name: Skowron, Piotr M.
name: Zylicz-Stachula, Agnieszka
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 5: Genetic map and DNA sequence of the Dmb hydrogenase SH_LH_U493C_pMCSG53 recombinant construct.
Heisenberg symmetry and hypermultiplet manifolds
Creators: name: Antoniadis, Ignatios
name: Derendinger, Jean-Pierre
name: Petropoulos, P. Marios
name: Siampos, Konstantinos
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the emergence of Heisenberg (Bianchi II) algebra in hyper-Kähler and quaternionic spaces. This is motivated by the rôle these spaces with this symmetry play in $\mathcal{N}=2$ hypermultiplet scalar manifolds. We show how to construct related pairs of hyper-Kähler and quaternionic spaces under general symmetry assumptions, the former being a zooming-in limit of the latter at vanishing cosmological constant. We further apply this method for the two hyper-Kähler spaces with Heisenberg algebra, which is reduced to $U(1)\times U(1)$ at the quaternionic level. We also show that no quaternionic spaces exist with a strict Heisenberg symmetry -- as opposed to $\text{Heisenberg} \ltimes U(1)$. We finally discuss the realization of the latter by gauging appropriate $Sp(2,4)$ generators in $\mathcal{N}=2$ conformal supergravity.
description: 1+24 pages, Latex; v2: few minor changes, NPB version, v3: Correcting a typo in Eqs. (2.9), (2.10), (2.12)
Additional file 1 of Barriers and needs in mental healthcare of adults with autism spectrum disorder in Germany: a qualitative study in autistic adults, relatives, and healthcare providers
Creators: name: Dückert, Sophia
name: Gewohn, Petia
name: König, Hannah
name: Schöttle, Daniel
name: Konnopka, Alexander
name: Rahlff, Pascal
name: Erik, Frank-
name: Vogeley, Kai
name: Schulz, Holger
name: David, Nicole
name: Peth, Judith
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
classificationCode: 69999
subject: Biological Sciences not elsewhere classified
subject: Science Policy
classificationCode: 111714
subject: Mental Health

description: Supplementary Material 1 Table S1 Sample distribution by region and federal state