cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Social media in the Global South: A Network Dataset of the Malian Twittersphere
Creators: name: Schroeder, Daniel Thilo
name: de Bruijn, Mirjam
name: Bruls, Luca
name: Moges, Mulatu Alemayehu
name: Badji, Samba Dialimpa
name: Fritz, Noëmie
name: Cisse, Modibo Galy
name: Langguth, Johannes
name: Mutsvairo, Bruce
name: Orgeret, Kristin Skare
Publisher: name: arXiv
Year: 2023
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: With the expansion of mobile communications infrastructure, social media usage in the Global South is surging. Compared to the Global North, populations of the Global South have had less prior experience with social media from stationary computers and wired Internet. Many countries are experiencing violent conflicts that have a profound effect on their societies. As a result, social networks develop under different conditions than elsewhere, and our goal is to provide data for studying this phenomenon. In this dataset paper, we present a data collection of a national Twittersphere in a West African country of conflict. While not the largest social network in terms of users, Twitter is an important platform where people engage in public discussion. The focus is on Mali, a country beset by conflict since 2012 that has recently had a relatively precarious media ecology. The dataset consists of tweets and Twitter users in Mali and was collected in June 2022, when the Malian conflict became more violent internally both towards external and international actors. In a preliminary analysis, we assume that the conflictual context influences how people access social media and, therefore, the shape of the Twittersphere and its characteristics. The aim of this paper is to primarily invite researchers from various disciplines including complex networks and social sciences scholars to explore the data at hand further. We collected the dataset using a scraping strategy of the follower network and the identification of characteristics of a Malian Twitter user. The given snapshot of the Malian Twitter follower network contains around seven million accounts, of which 56,000 are clearly identifiable as Malian. In addition, we present the tweets. The dataset is available at: https://osf.io/mj2qt/
description: 12 pages, 4 figures
Radio Sources in Low-Luminosity Active Galactic Nuclei. III. "AGNs" in a Distance-Limited Sample of "LLAGNs"
Creators: name: Nagar, N. M.
name: Falcke, H.
name: Wilson, A. S.
name: Ulvestad, J. S.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (abbreviated): This paper presents the results of a high resolution radio imaging survey of all known (96) low-luminosity active galactic nuclei (LLAGNs) at D<19Mpc. We find that almost half of all LINERs and low-luminosity Seyferts have flat-spectrum radio cores when observed at 150mas resolution. Higher (2mas) resolution observations of a flux-limited subsample have provided a 100% (16 of 16) detection rate of pc-scale radio cores, with implied brightness temperatures > 10^8 K. The five LLAGNs with the highest core radio fluxes also have pc-scale `jets.' Compact radio cores are almost exclusively found in massive ellipticals and in type1 nuclei. The core radio power is correlated with the nuclear optical `broad' Halpha luminosity, the nuclear optical `narrow' emission line luminosity and width, and with the galaxy luminosity. In these correlations LLAGNs fall close to the low-luminosity extrapolations of more powerful AGNs. About half of all LLAGNs with multiple epoch data show significant inter-year radio variability. Investigation of a sample of ~150 nearby bright galaxies, most of them LLAGNs, shows that the nuclear (<150mas size) radio power is strongly correlated with both the black hole mass and the galaxy bulge luminosity; linear regression fits to all ~150 galaxies give: log P(2cm) = 1.31 log M_blackhole + 8.77 and log P(2cm) = 1.89 log L_B(bulge) - 0.17. Low accretion rates are implied in both advection- and jet-type models. In brief, all evidence points towards the presence of accreting massive black holes in a large fraction, perhaps all, of LLAGNs.
description: to appear in A&A
Entropy from entangled parton states and high-energy scattering behavior
Creators: name: Dosch, Hans Gunter
name: de Teramond, Guy F.
name: Brodsky, Stanley J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The relation between the gluon density in a hadron and entanglement entropy can shed a new light on the high energy scattering behavior of hadrons. Using the holographic light-front QCD framework the growth above the classical geometric cross section is directly related to the increase of the internal quantum entropy from the entangled parton distribution in hadrons. A rather consistent picture emerges from the scale dependence of the Pomeron from the QCD evolution of the gluon distribution function $g(x, μ)$, the rising of the integrated cross section in photoproduction of vector mesons, the deep inelastic scattering (DIS) experiments at HERA, hadron multiplicity and quantum entropy. We also point out a possible analogy between parton entanglement entropy and the black-hole entropy of Bekenstein and Hawking.
description: 17 pages, 4 figures, updated references
Real-time Adaptive Optics with pyramid wavefront sensors: A theoretical analysis of the pyramid sensor model
Creators: name: Hutterer, Victoria
name: Ramlau, Ronny
name: Shatokhina, Iuliia
Publisher: name: arXiv
Year: 2018
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We consider the mathematical background of the wavefront sensor type that is widely used in Adaptive Optics systems for astronomy, microscopy, and ophthalmology. The theoretical analysis of the pyramid sensor forward operators presented in this paper is aimed at a subsequent development of fast and stable algorithms for wavefront reconstruction from data of this sensor type. In our analysis we allow the sensor to be utilized in both the modulated and non-modulated fashion. We derive detailed mathematical models for the pyramid sensor and the physically simpler roof wavefront sensor as well as their various approximations. Additionally, we calculate adjoint operators which build preliminaries for the application of several iterative mathematical approaches for solving inverse problems such as gradient based algorithms, Landweber iteration or Kaczmarz methods.
Additional file 4: of Patterns of health care use and out-of-pocket payments among general population and social security beneficiaries in Myanmar
Creators: name: Chaw-Yin Myint
name: Pavlova, Milena
name: Groot, Wim
Publisher: name: figshare
Year: 2019
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 60506 Virology

description: Regression analysis for cluster group II, III, IV. Description of data: Multinomial logistic regression for cluster analysis II variables of general sample and binary logistic regression of SSS sample; Binary logistic regression for cluster analysis III and IV variables of both general and SSS samples; and Linear regression for amount of payment for medicines of both general and SSS samples. (DOCX 34 kb)
Conserved Quantities for Polyhomogeneous Space-Times
Creators: name: Kroon, J. A. Valiente
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The existence of conserved quantities with a structure similar to the Newman-Penrose quantities in a polyhomogeneous space-time is addressed. The most general form for the initial data formally consistent with the polyhomogeneous setting is found. The subsequent study is done for those polyhomogeneous space-times where the leading term of the shear contains no logarithmic terms. It is found that for these space-times the original NP quantities cease to be constants, but it is still possible to construct a set of other 10 quantities that are constant. From these quantities it is possible to obtain as a particular case a conserved quantity found by Chrusciel et al.
description: 21 pages, LaTex, to be published in CQG
The GROWTH Marshal: A Dynamic Science Portal for Time-Domain Astronomy
Creators: name: Kasliwal, M. M.
name: Cannella, C.
name: Bagdasaryan, A.
name: Hung, T.
name: Feindt, U.
name: Singer, L. P.
name: Coughlin, M.
name: Fremling, C.
name: Walters, R.
name: Duev, D.
name: Itoh, R.
name: Quimby, R. M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We describe a dynamic science portal called the GROWTH Marshal that allows time-domain astronomers to define science programs, program filters to save sources from different discovery streams, co-ordinate follow-up with various robotic or classical telescopes, analyze the panchromatic follow-up data and generate summary tables for publication. The GROWTH marshal currently serves 137 scientists, 38 science programs and 67 telescopes. Every night, in real-time, several science programs apply various customized filters to the 10^5 nightly alerts from the Zwicky Transient Facility. Here, we describe the schematic and explain the functionality of the various components of this international collaborative platform.
description: Published in PASP Focus Issue on the Zwicky Transient Facility (doi: 10.1088/1538-3873/aafbc2). 12 Pages, 6 Figures
There is no operatorwise version of the Bishop-Phelps-Bollobás property
Creators: name: Dantas, Sheldon
name: Kadets, Vladimir
name: Kim, Sun Kwang
name: Lee, Han Ju
name: Martín, Miguel
Publisher: name: arXiv
Year: 2018
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: Given two real Banach spaces $X$ and $Y$ with dimensions greater than one, it is shown that there is a sequence $\{T_n\}_{n\in \mathbb{N}}$ of norm attaining norm-one operators from $X$ to $Y$ and a point $x_0\in X$ with $\|x_0\|=1$, such that $\|T_n(x_0)\|\longrightarrow 1$ but $\inf_{n \in \mathbb{N}} \{\mbox{dist} (x_0,\,\{x\in X: \|T_n(x)\|=\|x\|=1\})\} >0.$ This shows that a version of the Bishop-Phelps-Bollobás property in which the operator is not changed is possible only if one of the involved Banach spaces is one-dimensional.
description: The content of this paper overlaps with the old version of arXiv:1709.00032 (arXiv:1709.00032v1, submitted on 31 Aug 2017). Nevertheless, there is no intersection between the present version and the updated one of arXiv:1709.00032 (arXiv:1709.00032v2, submitted on 26 Sep 2018)
Diffuse and Localized Functional Dysconnectivity in Schizophrenia: a Bootstrapped Top-Down Approach
Creators: name: Coluzzi, Davide
name: Baselli, Giuseppe
Publisher: name: arXiv
Year: 2023
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: Schizophrenia (SZ) is a brain disorder leading to detached mind's normally integrated processes. Hence, the exploration of the symptoms in relation to functional connectivity (FC) had great relevance in the field. FC can be investigated on different levels, going from global features to single edges between regions, revealing diffuse and localized dysconnection patterns. In this context, SZ is characterized by a diverse global integration with reduced connectivity in specific areas of the Default Mode Network (DMN). However, the assessment of FC presents various sources of uncertainty. This study proposes a multi-level approach for more robust group-comparison. FC between 74 AAL brain areas of 15 healthy controls (HC) and 12 SZ subjects were used. Multi-level analyses and graph topological indexes evaluation were carried out by the previously published SPIDER-NET tool. Robustness was augmented by bootstrapped (BOOT) data and the stability was evaluated by removing one (RST1) or two subjects (RST2). The DMN subgraph was evaluated, toegether with overall local indexes and connection weights to enhance common activations/deactivations. At a global level, expected trends were found. The robustness assessment tests highlighted more stable results for BOOT compared to the direct data testing. Conversely, significant results were found in the analysis at lower levels. The DMN highlighted reduced connectivity and strength as well as increased deactivation in the SZ group. At local level, 13 areas were found to be significantly different ($p<0.05$), highlighting a greater divergence in the frontal lobe. These results were confirmed analyzing the negative edges, suggesting inverted connectivity between prefronto-temporal areas. In conclusion, multi-level analysis supported by BOOT is highly recommended, especially when diffuse and localized dysconnections must be investigated in limited samples.
description: 28 pages, 8 figures
Binary-Tree Encoding for Uniform Binary Sources in Index Modulation Systems
Creators: name: Coon, Justin P.
name: Badiu, Mihai-Alin
name: Liu, Ye
name: Yarkin, Ferhat
name: Dang, Shuping
Publisher: name: arXiv
Year: 2019
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: The problem of designing bit-to-pattern mappings and power allocation schemes for orthogonal frequency-division multiplexing (OFDM) systems that employ subcarrier index modulation (IM) is considered. We assume the binary source conveys a stream of independent, uniformly distributed bits to the pattern mapper, which introduces a constraint on the pattern transmission probability distribution that can be quantified using a binary tree formalism. Under this constraint, we undertake the task of maximizing the achievable rate subject to the availability of channel knowledge at the transmitter. The optimization variables are the pattern probability distribution (i.e., the bit-to-pattern mapping) and the transmit powers allocated to active subcarriers. To solve the problem, we first consider the relaxed problem where pattern probabilities are allowed to take any values in the interval [0,1] subject to a sum probability constraint. We develop (approximately) optimal solutions to the relaxed problem by using new bounds and asymptotic results, and then use a novel heuristic algorithm to project the relaxed solution onto a point in the feasible set of the constrained problem. Numerical analysis shows that this approach is capable of achieving the maximum mutual information for the relaxed problem in low and high-SNR regimes and offers noticeable benefits in terms of achievable rate relative to a conventional OFDM-IM benchmark.
description: 18 pages, 16 figures, 2 tables
Anomalous magnetophotoluminescence as a result of level repulsion in arrays of quantum dots
Creators: name: Tsiper, E. V.
name: Wang, P. D.
name: Merz, J. L.
name: Efros, A. L.
name: Fafard, S.
name: Leonard, D.
name: Petroff, P. M.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Selectively excited photoluminescence (SPL) of an array of self-organized In$_{0.5}$Ga$_{0.5}$As quantum dots has been measured in a magnetic field up to 11T. Anomalous magnetic field sensitivity of the SPL spectra has been observed under conditions for which the regular photoluminescence spectra is insensitive to the magnetic field due to large inhomogeneous broadening. The anomalous sensitivity is interpreted in terms of the repulsion of excited levels of the dots in a random potential. A theory presented to describe this phenomena is in excellent agreement with the experimental data. The data estimated the correlation in the positions of excited levels of the dots to be 94%. The magnetic field dependence allows the determination of the reduced cyclotron effective mass in a dot. For our sample we have obtained $m_em_h/(m_e+m_h)=0.034m_0$.
description: 12 revtex preprint pages + 4 ps figures, uuencoded
A belief combination rule for a large number of sources
Creators: name: Zhou, Kuang
name: Martin, Arnaud
name: Pan, Quan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The theory of belief functions is widely used for data from multiple sources. Different evidence combination rules have been proposed in this framework according to the properties of the sources to combine. However, most of these combination rules are not efficient when there are a large number of sources. This is due to either the complexity or the existence of an absorbing element such as the total conflict mass function for the conjunctive based rules when applied on unreliable evidence. In this paper, based on the assumption that the majority of sources are reliable, a combination rule for a large number of sources is proposed using a simple idea: the more common ideas the sources share, the more reliable these sources are supposed to be. This rule is adaptable for aggregating a large number of sources which may not all be reliable. It will keep the spirit of the conjunctive rule to reinforce the belief on the focal elements with which the sources are in agreement. The mass on the emptyset will be kept as an indicator of the conflict. The proposed rule, called LNS-CR (Conjunctive combinationRule for a Large Number of Sources), is evaluated on synthetic mass functions. The experimental results verify that the rule can be effectively used to combine a large number of mass functions and to elicit the major opinion.
description: arXiv admin note: substantial text overlap with arXiv:1707.07999
title: „Blumenwiesen“ als neuartiges Phänomen in unseren Städten
Creators: name: Brandes, Dietmar
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2015
Subjects: subject: 58

description: Seit einer Reihe von Jahren werden nicht nur einzelne
Sommerblumenarten, sondern artenreiche Mischungen mit großem
Erfolg insbesondere auf innerstädtischen Rasenflächen ausgesät.
Diese Mischungen blühen ab Juni über einen längeren Zeitraum und
werden von der Bevölkerung sehr gut angenommen.
Je nach den lokalen Gegebenheiten werden schmale Blühstreifen,
Beete oder auch großflächige Bestände in bereits bestehende
Grünanlagen eingesät, wobei die Grasnarbe der Rasenbestände
vorher mechanisch aufgerissen bzw. zerstört werden muss.
Sommerblumenbeete („Blumenwiesen“ bzw. „Sommerblumenwiesen“)
stellen einen großen ästhetischen Gewinn für das Stadtbild dar und
zeigen zugleich, wie sehr blühende Pflanzen von den Einwohnern
begrüßt werden.
The Quantum Stress-Tensor in Self-Similar Spherical Dust Collapse
Creators: name: Barve, Sukratu
name: Singh, T. P.
name: Vaz, Cenalo
name: Witten, Louis
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We calculate the quantum stress tensor for a massless scalar field in the 2-d self-similar spherical dust collapse model which admits a naked singularity. We find that the outgoing radiation flux diverges on the Cauchy horizon. This may have two consequences. The resultant back reaction may prevent the naked singularity from forming, thus preserving cosmic censorship through quantum effects. The divergent flux may lead to an observable signature differentiating naked singularities from black holes in astrophysical observations.
description: Latex File, 19 pages
Additional file 3: of Patterns of health care use and out-of-pocket payments among general population and social security beneficiaries in Myanmar
Creators: name: Chaw-Yin Myint
name: Pavlova, Milena
name: Groot, Wim
Publisher: name: figshare
Year: 2019
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Results of cluster analysis. Description of data: Results of cluster analysis I: all variables (General population and SSS population); Results of cluster analysis II (General population and SSS population): Type of health services used for last illness during past 12â months and reason of using such services (General population and SSS population); Results of cluster analysis III: Type of payment for healthcare services (General population and SSS population); Results of cluster analysis IV: Amount of payment and coping strategies (General population and SSS population). (DOCX 174 kb)
title: Geschichte der Pharmazie 71. Jahrgang April 2019, 1/2
Creators: name: :None
Publisher: name: Deutscher Apotheker-Verlag
Year: 2019
Subjects: subject: 615

description: Mit freundlicher Genehmigung des DAV - Deutscher Apotheker Verlag und der Deutschen Gesellschaft für Geschichte der Pharmazie.
description: Geschichte der Pharmazie: Zeitschrift der Deutschen Gesellschaft für Geschichte der Pharmazie e.V., vol. 71. 2019, no. 1/2, p. 1
Non-Abelian Topological Order and Anyons on a Trapped-Ion Processor
Creators: name: Iqbal, Mohsin
name: Tantivasadakarn, Nathanan
name: Verresen, Ruben
name: Campbell, Sara L.
name: Dreiling, Joan M.
name: Figgatt, Caroline
name: Gaebler, John P.
name: Johansen, Jacob
name: Mills, Michael
name: Moses, Steven A.
name: Pino, Juan M.
name: Ransford, Anthony
name: Rowe, Mary
name: Siegfried, Peter
name: Stutz, Russell P.
name: Foss-Feig, Michael
name: Vishwanath, Ashvin
name: Dreyer, Henrik
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Non-Abelian topological order (TO) is a coveted state of matter with remarkable properties, including quasiparticles that can remember the sequence in which they are exchanged. These anyonic excitations are promising building blocks of fault-tolerant quantum computers. However, despite extensive efforts, non-Abelian TO and its excitations have remained elusive, unlike the simpler quasiparticles or defects in Abelian TO. In this work, we present the first unambiguous realization of non-Abelian TO and demonstrate control of its anyons. Using an adaptive circuit on Quantinuum's H2 trapped-ion quantum processor, we create the ground state wavefunction of $D_4$ TO on a kagome lattice of 27 qubits, with fidelity per site exceeding $98.4\%$. By creating and moving anyons along Borromean rings in spacetime, anyon interferometry detects an intrinsically non-Abelian braiding process. Furthermore, tunneling non-Abelions around a torus creates all 22 ground states, as well as an excited state with a single anyon -- a peculiar feature of non-Abelian TO. This work illustrates the counterintuitive nature of non-Abelions and enables their study in quantum devices.
description: 6 + 20 pages, 6 + 5 figures, 3 tables v2: Changed title, added a reference
Amenability problem for Thompson's group $F$: state of the art
Creators: name: Guba, Victor
Publisher: name: arXiv
Year: 2023
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: G.0
subject: 20F05, 05C25

description: This is a survey of our recent results on the amenability problem for Thompson's group $F$. They mostly concern esimating the density of finite subgraphs in Cayley graphs of $F$ for various systems of generators, and also equations in the group ring of $F$. We also discuss possible approaches to solve the problem in both directions.
description: 24 pages, 2 figures. Published in journal of Groups, Complexity, Cryptology. arXiv admin note: text overlap with arXiv:2112.09812
title: Erste Änderungsordnung des Besonderen Teils der Prüfungsordnung für den Masterstudiengang "Biologie" an der Technischen Universität Braunschweig, Fakultät Lebenswissenschaften
Creators: name: :None
Publisher: name: Technische Universität Braunschweig, GB 1/Abt. 11
Year: 2019
Subjects: subject: Ordnung
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 1261
Robust and Irreversible Development in Cell Society as a General Consequence of Intra-Inter Dynamics
Creators: name: Kaneko, Kunihiko
name: Furusawa, Chikara
Publisher: name: arXiv
Year: 1999
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: A dynamical systems scenario for developmental cell biology is proposed, based on numerical studies of a system with interacting units with internal dynamics and reproduction. Diversification, formation of discrete and recursive types, and rules for differentiation are found as a natural consequence of such a system. "Stem cells" that either proliferate or differentiate to different types stochastically are found to appear when intra-cellular dynamics are chaotic. Robustness of the developmental process against microscopic and macroscopic perturbations is shown to be a natural consequence of such intra-inter dynamics, while irreversibility in developmental process is discussed in terms of the gain of stability, loss of diversity and chaotic instability.
description: 17 pages with 3 ps figures. submitted to Physica A as a proceeding paperfor Paladin Memorial Conf
title: Erste Änderungsordnung des Besonderen Teils der Prüfungsordnung für den Bachelorstudiengang "Biologie" an der Technischen Universität Braunschweig, Fakultät Lebenswissenschaften
Creators: name: :None
Publisher: name: Technische Universität Braunschweig, GB 1/Abt. 11
Year: 2019
Subjects: subject: Ordnung
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 1260
title: Zweite Änderungsordnung der Ordnung zur Registrierung Studentischer Vereinigungen der Technischen Universität Braunschweig
Creators: name: :None
Publisher: name: Technische Universität Braunschweig, GB 1/Abt. 11
Year: 2019
Subjects: subject: Ordnung
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 1259
A Morphological Classification Model to Identify Unresolved PanSTARRS1 Sources: Application in the ZTF Real-Time Pipeline
Creators: name: Tachibana, Yutaro
name: Miller, A. A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: In the era of large photometric surveys, the importance of automated and accurate classification is rapidly increasing. Specifically, the separation of resolved and unresolved sources in astronomical imaging is a critical initial step for a wide array of studies, ranging from Galactic science to large scale structure and cosmology. Here, we present our method to construct a large, deep catalog of point sources utilizing Pan-STARRS1 (PS1) 3$π$ survey data, which consists of $\sim$3$\times10^9$ sources with $m\lesssim23.5\,$mag. We develop a supervised machine-learning methodology, using the random forest (RF) algorithm, to construct the PS1 morphology model. We train the model using $\sim$5$\times10^4$ PS1 sources with HST COSMOS morphological classifications and assess its performance using $\sim$4$\times10^6$ sources with Sloan Digital Sky Survey (SDSS) spectra and $\sim$2$\times10^8$ \textit{Gaia} sources. We construct 11 "white flux" features, which combine PS1 flux and shape measurements across 5 filters, to increase the signal-to-noise ratio relative to any individual filter. The RF model is compared to 3 alternative models, including the SDSS and PS1 photometric classification models, and we find that the RF model performs best. By number the PS1 catalog is dominated by faint sources ($m\gtrsim21\,$mag), and in this regime the RF model significantly outperforms the SDSS and PS1 models. For time-domain surveys, identifying unresolved sources is crucial for inferring the Galactic or extragalactic origin of new transients. We have classified $\sim$1.5$\times10^9$ sources using the RF model, and these results are used within the Zwicky Transient Facility real-time pipeline to automatically reject stellar sources from the extragalactic alert stream.
description: Published in PASP Focus Issue on the Zwicky Transient Facility (doi: 10.1088/1538-3873/aae3d9). 17 Pages, 9 Figures
Transport properties of one-dimensional interacting fermions in aperiodic potentials
Creators: name: Chaves, J. C.
name: Satija, I. I.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Motivated by the existence of metal-insulator transition in one-dimensional non-interacting fermions in quasiperiodic and pseudorandom potentials, we studied interacting spinless fermion models using exact many-body Lanczos diagonalization techniques. Our main focus was to understand the effect of the fermion-fermion interaction on the transport properties of aperiodic systems. We calculated the ground state energy and the Kohn charge stiffness Dc. Our numerical results indicate that there exists a region in the interaction strength parameter space where the system may behave differently from the metallic and insulating phases. This intermediate phase may be characterized by a power law scaling of the charge stiffness constant in contrast to the localized phase where Dc scales exponentially with the size of the system.
description: 11 pages LaTex document with 5 eps figures. Uses revtex style files
Coming out of your silo: leveraging cIRcle to increase your academic impact
Creators: name: Colenbrander, Hilde
name: Grajales, Francisco J.
name: Radomske, Meghan
Publisher: name: The University of British Columbia
Year: 2016

description: cIRcle is UBC’s open and digital repository for showcasing your research and teaching materials to the world. Whether you are a faculty, staff, post-doc, graduate, or undergraduate student at UBC, cIRcle is your database! This presentation showcased some exciting work at UBC by student and faculty researchers and how it can be accessed on cIRcle. The speakers also presented some of the benefits of including your work in UBC’s digital repository, and some awards that you could be eligible to win as a student, faculty or staff member. This session took place on October 21, 2010 in the Lillooet Room of the Irving K. Barber Learning Centre at the University of British Columbia. [Note: The PDF file contains an embedded video on slide 42 which is available as a separate mp4 file below].
Adaptive variational simulation for open quantum systems
Creators: name: Chen, Huo
name: Gomes, Niladri
name: Niu, Siyuan
name: de Jong, Wibe Albert
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Emerging quantum hardware provides new possibilities for quantum simulation. While much of the research has focused on simulating closed quantum systems, the real-world quantum systems are mostly open. Therefore, it is essential to develop quantum algorithms that can effectively simulate open quantum systems. Here we present an adaptive variational quantum algorithm for simulating open quantum system dynamics described by the Lindblad equation. The algorithm is designed to build resource-efficient ansatze through the dynamical addition of operators by maintaining the simulation accuracy. We validate the effectiveness of our algorithm on both noiseless simulators and IBM quantum processors and observe good quantitative and qualitative agreement with the exact solution. We also investigate the scaling of the required resources with system size and accuracy and find polynomial behavior. Our results demonstrate that near-future quantum processors are capable of simulating open quantum systems.
description: 30 pages, 14 figures, 3 tables
Normative data for 111 compound Remote Associates Test problems in Romanian
Creators: name: Olteteanu, Ana-Maria
name: Taranu, Mihaela
name: Ionescu, Thea
Publisher: name: Freie Universität Berlin
Year: 2019
Subjects: subject: creativity tests
subject: Remote Associates Test
subject: normative data
subject: creative cognition
subject: Romanian
subject: 000 Informatik, Informationswissenschaft, allgemeine Werke::000 Informatik, Wissen, Systeme::000 Informatik, Informationswissenschaft, allgemeine Werke

description: The Remote Associates Test (RAT) is a classical creativity test developed by Mednick and Mednick in 1967. RAT problems and their norms so far exist only in a few languages, including English, Dutch, Japanese and Italian. In this paper, we describe our process of constructing a set of Remote Associates Test problem in Romanian. 63 native speaking Romanian participants have solved this set. The set of items shows high internal consistency. Normative data pertaining to each problem is provided, together with a description of RAT problems peculiarities in Romanian.
Reconstruction of systems with delayed feedback: (II) Application
Creators: name: Bünner, M. J.
name: Ciofini, M.
name: Giaquinta, A.
name: Hegger, R.
name: Kantz, H.
name: Meucci, R.
name: Politi, A.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We apply a recently proposed method for the analysis of time series from systems with delayed feedback to experimental data generated by a CO_2 laser. The method is able to estimate the delay time with an error of the order of the sampling interval, while an approach based on the peaks of either the autocorrelation function, or the time delayed mutual information would yield systematically larger values. We reconstruct rather accurately the equations of motion and, in turn, estimate the Lyapunov spectrum even for rather high dimensional attractors. By comparing models constructed for different 'embedding dimensions' with the original data, we are able to find the minimal faitfhful model. For short delays, the results of our procedure have been cross-checked using a conventional Takens time-delay embedding. For large delays, the standard analysis is inapplicable since the dynamics becomes hyperchaotic. In such a regime we provide the first experimental evidence that the Lyapunov spectrum, rescaled according to the delay time, is independent of the delay time itself. This is in full analogy with the independence of the system size found in spatially extended systems.
description: 16 pages, 29 figures included
High Density Reflection Spectroscopy I. A case study of GX~339-4
Creators: name: Jiang, Jiachen
name: Fabian, Andrew C.
name: Wang, Jingyi
name: Walton, Dominic J.
name: García, Javier A.
name: Parker, Michael L.
name: Steiner, James F.
name: Tomsick, John A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a broad band spectral analysis of the black hole binary GX~339-4 with NuSTAR and Swift using high density reflection model. The observations were taken when the source was in low flux hard states (LF) during the outbursts in 2013 and 2015, and in a very high flux soft state (HF) in 2015. The high density reflection model can explain its LF spectra with no requirement for an additional low temperature thermal component. This model enables us to constrain the density in the disc surface of GX~339-4 in different flux states. The disc density in the LF state is $\log(n_{\rm e}/$ cm$^{-3})\approx21$, 100 times higher than the density in the HF state ($\log(n_{\rm e}/$ cm$^{-3})=18.93^{+0.12}_{-0.16}$). A close-to-solar iron abundance is obtained by modelling the LF and HF broad band spectra with variable density reflection model ($Z_{\rm Fe}=1.50^{+0.12}_{-0.04}Z_{\odot}$ and $Z_{\rm Fe}=1.05^{+0.17}_{-0.15}Z_{\odot}$ respectively).
description: Accepted by MNRAS
title: Allgemeine Zugangs- und Zulassungsordnung für grundständige Studiengänge der Technischen Universität Braunschweig
Creators: name: :None
Publisher: name: Technische Universität Braunschweig, GB 1/Abt. 11
Year: 2019
Subjects: subject: Ordnung
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 1258
How Important is Selection? Experimental Vs Non-experimental Measures of the income Gains from Migration
Creators: name: McKenzie, David
name: Gibson, John
name: Stillman, Steven
name: McKenzie, David
name: Gibson, John
name: Stillman, Steven
Publisher: name: Unknown
Year: 2006
Subjects: subject: International Relations/Trade
subject: Labor and Human Capital
subject: migration
subject: selection
subject: natural experiment

description: Measuring the gain in income from migration is complicated by nonrandom selection of migrants from the general population, making it hard to obtain an appropriate comparison group of non-migrants. This paper uses a migrant lottery to overcome this problem, providing an experimental measure of the income gains from migration. New Zealand allows a quota of Tongans to immigrate each year with a lottery used to choose amongst the excess number of applicants. A unique survey conducted by the authors in these two countries allows experimental estimates of the income gains from migration to be obtained by comparing the incomes of migrants to those who applied to migrate, but whose names were not drawn in the lottery, after allowing for the effect of noncompliance among some of those whose names were drawn. We also conducted a survey of individuals who did not apply for the lottery. Comparing this non-applicant group to the migrants enables assessment of the degree to which non-experimental methods can provide an unbiased estimate of the income gains from migration. We find evidence of migrants being positively selected in terms of both observed and unobserved skills. As a result, non-experimental methods are found to overstate the gains from migration, by 9 to 82 percent. A good instrumental variable works best, while difference-in-differences and biasadjusted propensity-score matching also perform comparatively well.
ESCAPING A CODE STROKE: EVALUATION OF ESCAPE ROOM METHODOLOGY ON ACCEPTANCE OF STROKE MANAGEMENT GUIDELINES
Creators: name: Tai, Diana Dauz
Publisher: name: Zenodo
Year: 2023
Subjects: stroke
escape room
nursing
attitudes
evidence-based guidelines
ischemic stroke
nursing education
neuroscience
educational game
gamification

description: Given the clinical necessity to expedite diagnostic workup and treatment for patients suffering from a stroke, new evidence-based stroke management guidelines have recognized the importance of early activation of stroke teams and have emphasized streamlining workflows. These recommendations and best practices profoundly rely on nursing education and stroke team training. Escape rooms have been utilized in healthcare as an unconventional and alternative education methodology to promote critical thinking and team collaboration; however, few studies examined its impact on nursing acceptance of evidence-based guidelines specific to reducing time metrics and improving patient outcomes. This doctoral project examines the impact of a stroke escape room on nursing attitudes and acceptance towards the American Heart and American Stroke Association 2019 Stroke Management Guidelines. Using the Seven Stars of Knowledge framework, the escape room was implemented at a 552-bed community hospital during nursing orientation with 40 newly hired nurses with varying years of experience and nursing background. Desired outcomes focused on increased nursing knowledge and attitudes towards acceptance of current evidence-based stroke guidelines. The Evidence Based Practice Attitude Scale was used to measure these outcomes pre and post stroke escape room implementation. Participant scores resulted in an overall increase in attitudes towards acceptance of current stroke guidelines. The successful piloting of an escape room as an alternative method of teaching yields the potential for its integration into other avenues of nursing education. Exploration of years of experience and generational differences can further determine the effectiveness of escape rooms to produce more education-focused outcomes and therefore guide the implementation and study of escape rooms in clinical practice.
Additional file 2: of Patterns of health care use and out-of-pocket payments among general population and social security beneficiaries in Myanmar
Creators: name: Chaw-Yin Myint
name: Pavlova, Milena
name: Groot, Wim
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy

description: Model summary and cluster quality of cluster analysis II, III, IV. Description of data: Model summary and cluster quality of Cluster analysis II (Type of health services used for last illness during the past 12â months and reason of using these services) for both samples. Model summary and cluster quality of Cluster analysis III (Type of payment for healthcare services used) for both samples. Model summary and cluster quality of Cluster analysis IV (The amount of OOPPs and coping strategies). (DOCX 180 kb)
title: Zweite Änderung der Besonderen Ordnung über den Zugang und die Zulassung für den Studiengang "Maschinenbau" mit dem Abschluss "Bachelor of Science" an der Technischen Universität Braunschweig, Fakultät für Maschinenbau
Creators: name: :None
Publisher: name: Technische Universität Braunschweig, GB 1/Abt. 11
Year: 2019
Subjects: subject: Ordnung
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 1257
Machine Learning for the Zwicky Transient Facility
Creators: name: Mahabal, Ashish
name: Rebbapragada, Umaa
name: Walters, Richard
name: Masci, Frank J.
name: Blagorodnova, Nadejda
name: van Roestel, Jan
name: Ye, Quan-Zhi
name: Biswas, Rahul
name: Burdge, Kevin
name: Chang, Chan-Kao
name: Duev, Dmitry A.
name: Golkhou, V. Zach
name: Miller, Adam A.
name: Nordin, Jakob
name: Ward, Charlotte
name: Adams, Scott
name: Bellm, Eric C.
name: Branton, Doug
name: Bue, Brian
name: Cannella, Chris
name: Connolly, Andrew
name: Dekany, Richard
name: Feindt, Ulrich
name: Hung, Tiara
name: Fortson, Lucy
name: Frederick, Sara
name: Fremling, C.
name: Gezari, Suvi
name: Graham, Matthew
name: Groom, Steven
name: Kasliwal, Mansi M.
name: Kulkarni, Shrinivas
name: Kupfer, Thomas
name: Lin, Hsing Wen
name: Lintott, Chris
name: Lunnan, Ragnhild
name: Parejko, John
name: Prince, Thomas A.
name: Riddle, Reed
name: Rusholme, Ben
name: Saunders, Nicholas
name: Sedaghat, Nima
name: Shupe, David L.
name: Singer, Leo P.
name: Soumagnac, Maayane T.
name: Szkody, Paula
name: Tachibana, Yutaro
name: Tirumala, Kushal
name: van Velzen, Sjoert
name: Wright, Darryl
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Zwicky Transient Facility is a large optical survey in multiple filters producing hundreds of thousands of transient alerts per night. We describe here various machine learning (ML) implementations and plans to make the maximal use of the large data set by taking advantage of the temporal nature of the data, and further combining it with other data sets. We start with the initial steps of separating bogus candidates from real ones, separating stars and galaxies, and go on to the classification of real objects into various classes. Besides the usual methods (e.g., based on features extracted from light curves) we also describe early plans for alternate methods including the use of domain adaptation, and deep learning. In a similar fashion we describe efforts to detect fast moving asteroids. We also describe the use of the Zooniverse platform for helping with classifications through the creation of training samples, and active learning. Finally we mention the synergistic aspects of ZTF and LSST from the ML perspective.
description: Published in PASP Focus Issue on the Zwicky Transient Facility (doi: 10.1088/1538-3873/aaf3fa). 14 Pages, 8 Figures
title: 1. Änderungsordnung der Beitragsordnung der Studierendenschaft der Technischen Universität Braunschweig
Creators: name: :None
Publisher: name: Technische Universität Braunschweig, GB 1/Abt. 11
Year: 2019
Subjects: subject: Ordnung
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 1256
title: Ueber die wissenschaftliche Bildung als Aufgabe der Hochschule; 1846
title: Rede an die Studirenden der Ludwigs-Maximilians-Universität [!] München gehalten beim Antritte seines Rektorates den 9. Dezember 1846
titleType: Subtitle
Creators: name: Weißbrod, Johann Baptist von
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2015

description: Erscheinungsjahr auf der Umschlagrückseite genannt
Introducing an Open, Dynamic and Efficient Access for TEI-encoded Dictionaries on the Internet
Creators: name: Mondaca, Francisco
name: Bigalke, Jan
Publisher: name: Zenodo
Year: 2019
Subjects: api
tei
graphql
rest
kosh
dictionary
git
github

description: Presentation of a Kosh-based workflow for editing dictionaries and publish them via APIs. TEI Conference Graz 2019
title: Grundordnung der Technischen Universität Braunschweig (nichtamtliche Lesefassung)
Creators: name: :None
Publisher: name: Technische Universität Braunschweig, GB 1/Abt. 11
Year: 2019
Subjects: subject: Ordnung
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 1255 b
The Impact of Incumbent/Opposition Status and Ideological Similitude on Emotions in Political Manifestos
Creators: name: Nishi, Takumi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: The study involved the analysis of emotion-associated language in the UK Conservative and Labour party general election manifestos between 2000 to 2019. While previous research have shown a general correlation between ideological positioning and overlap of public policies, there are still conflicting results in matters of sentiments in such manifestos. Using new data, we present how valence level can be swayed by party status within government with incumbent parties presenting a higher frequency in positive emotion-associated words while negative emotion-associated words are more prevalent in opposition parties. We also demonstrate that parties with ideological similitude use positive language prominently further adding to the literature on the relationship between sentiments and party status.
description: 14 pages, 3 figures, 1 appendix
Minimal orthonormal bases for pure quantum state estimation
Creators: name: Zambrano, Leonardo
name: Pereira, Luciano
name: Delgado, Aldo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present an analytical method to estimate pure quantum states using a minimum of three measurement bases in any finite-dimensional Hilbert space. This is optimal as two bases are insufficient to construct an informationally complete positive operator-valued measurement (IC-POVM) for pure states. We demonstrate our method using a binary tree structure, providing an algorithmic path for implementation. The performance of the method is evaluated through numerical simulations, showcasing its effectiveness for quantum state estimation.