cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Additional file 1: of Longitudinal brain morphology in anti-NMDA receptor encephalitis: a case report with controls
Creators: name: Laurikainen, Heikki
name: Isotupa, Iina
name: Nyman, Mikko
name: Ilonen, Tuula
name: Nummelin, Teija
name: Salokangas, Raimo
name: Hietala, Jarmo
Publisher: name: figshare
Year: 2019
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Pharmacology
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Supplementary methods. (DOCX 113 kb)
Conyza schimperi A. Rich.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Conyza
Conyza schimperi

description: Conyza schimperi Sch.Bip. ex A.Rich.  —
Habit: Woody herb or shrub.
Habitat: LMDF, BZ, UMF; 1 600–3 100 m. Distribution: II.
 Voucher: Near Ontulili Forest Station, Alt. 2 162 m, 5 Aug. 2015, SAJIT 003114 (HIB).
References: Bussmann (1993, 1994).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 91, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Effective dynamics of self-gravitating extended objects
Creators: name: Ansoldi, S.
name: Aurilia, A.
name: Balbinot, R.
name: Spallucci, E.
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We introduce an effective Lagrangian which describes the classical and semiclassical dynamics of spherically symmetric, self-gravitating objects that may populate the Universe at large and small (Planck) scale. These include wormholes, black holes and inflationary bubbles. We speculate that such objects represent some possible modes of fluctuation in the primordial spacetime foam out of which our universe was born. Several results obtained by different methods are encompassed and reinterpreted by our effective approach. As an example, we discuss: i) the gravitational nucleation coefficient for a pair of Minkowski bubbles, and ii) the nucleation coefficient of an inflationary vacuum bubble in a Minkowski background
description: 13 pages, no figures, ReVTeX
Feminismo, ética y datos geoespaciales: guía práctica de recomendaciones
Creators: name: Yang, Selene
Publisher: name: Zenodo
Year: 2021
Subjects: Open Data;
Data ethics
Geodata
Data Feminism

description: Materiales complementarios prácticos a la guía Feminismo, ética y datos geoespaciales. Una breve reflexión hacia su análisis conjunto https://zenodo.org/record/4681033#.YL-NDC0RqfQ Este material es una guía de recomendaciones básicas que busca ser un soporte didáctico para la investigación Feminismo, ética y datos geoespaciales. Una reflexión hacia un análisis conjunto, y puede ser utilizado de forma virtual o impresa para promover la discusión durante encuentros y actividades colectivas. Las recomendaciones presentes en el material no buscan ser un marco rector con respecto a los pasos que deban ser tomados en cuenta, sino un recorrido reflexivo con respecto a los debates tanto en colectivo como individuales que deban ser plateados al realizar prácticas de mapeo.Este recorrido atraviesa cuatro dimensiones: técnicas, políticas, epistemológicas y comunitarias. Dentro de cada una de estas categorías se desprenden ejemplos y cuestionamientos concretos con respecto a buenas prácticas de mapeo colaborativo enfocados en una ética feminista. Los datos geoespaciales cobran cada día mayor relevancia en la discusión de la agenda pública, ya sea por contextos como la lucha contra la pandemia por el SARS-Cov2 (COVID19), como por la lucha por la defensa de los territorios, los recursos naturales, la visibilización de las luchas feministas alrededor del mundo. Para utilizar este set de cartas es necesario 1. Imprimirlas en tamaño A4 por un solo lado 2. Plegar al centro y adherir la cara en blanco 3. Utilizarlas en encuentros o como materiales didácticos para compartir conocimientos y buenas prácticas
On a class of mappings between Riemannian manifolds
Creators: name: Otway, Thomas H.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 58E20, 75N10

description: Effects of geometric constraints on a steady flow potential are described by an elliptic-hyperbolic generalization of the harmonic map equations. Sufficient conditions are given for global triviality.
description: 10 pages
Testing Protective Coatings and their Removal for Outdoor Bronze Statuary
Creators: Simmons, Tucker McIntosh
Publisher: name: Columbia University
Year: 2021
Subjects: Historic preservation
Bronze sculpture--Conservation and restoration
Outdoor sculpture--Conservation and restoration
Protective coatings--Environmental aspects
Protective coatings--Evaluation
Lacquer and lacquering--Conservation and restoration
Waxes
Solvents
Urethanes

description: This research studied new coatings for their use on bronze statuary and evaluated removal using low-powered lasers. This testing was intended to add new coating materials to a conservator’s repertoire, to improve the protection of outdoor bronze sculpture, and extend the time between maintenance cycles. This would, in turn, allow owners to better care for their statues and lower long-term maintenance costs. The most commonly used approach for coating outdoor bronze involves the use of wax and/or lacquer; both are considered to be easily reversible. Wax can be successfully removed with heat and water, while lacquers can be easily removed with standard solvents. Both wax and lacquer coatings’ life cycles are relatively short, with wax-coated bronze usually needing annual or biennial maintenance and lacquer coatings lifespan in the field lasting roughly three to five years. This reversibility, long considered to be important in the conservation community, has been a challenge with respect to long-term coating durability for works exhibited outdoors. Three coatings were chosen for testing in this project. All three were urethane-based clearcoats that are either applied to lacquer or directly to the patinated bronze. A patina was applied to cast bronze coupons prior to the coatings. These samples were then subjected to accelerated weathering testing in a QUV chamber. After QUV testing, three procedures--based on ASTM standards--were conducted to assess the durability of the artificially weathered coatings. After the ASTM tests were concluded, removal of the surviving coatings was carried out using a 100-watt, 1064nm Class four laser. From these tests, it was determined that the acrylic urethane coating, Ecothane, produced by G. J. Nikolas & Co., was able to be successfully removed by laser cleaning, and could lead to a possible replacement for the commonly used wax and lacquers, however further research is needed before a definitive conclusion can be reached.
TARDIS Paper I: A Constrained Reconstruction Approach to Modeling the z~2.5 Cosmic Web Probed by Lyman-alpha Forest Tomography
Creators: name: Horowitz, Benjamin
name: Lee, Khee-Gan
name: White, Martin
name: Krolewski, Alex
name: Ata, Metin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent Lyman-$α$ forest tomography measurements of the intergalactic medium (IGM) have revealed a wealth of cosmic structures at high redshift ($z\sim 2.5$). In this work, we present the Tomographic Absorption Reconstruction and Density Inference Scheme (TARDIS), a new chrono-cosmographic analysis tool for understanding the formation and evolution of these observed structures. We use maximum likelihood techniques with a fast non-linear gravitational model to reconstruct the initial density field of the observed regions. We find that TARDIS allows accurate reconstruction of smaller scale structures than standard Wiener filtering techniques. Applying this technique to mock Lyman-$α$ forest data sets that simulate ongoing and future surveys such as CLAMATO, Subaru-PFS or the ELTs, we are able to infer the underlying matter density field at observed redshift and classify the cosmic web structures. We find good agreement with the underlying truth both in the characteristic eigenvalues and eigenvectors of the pseudo-deformation tensor, with the eigenvalues inferred from 30m-class telescopes correlated at $r=0.95$ relative to the truth. As an output of this method, we are able to further evolve the inferred structures to late time ($z=0$), and also track the trajectories of coeval $z=2.5$ galaxies to their $z=0$ cosmic web environments.
description: 18 pages, 14 figures
Conyza steudelii A. Rich.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Conyza
Conyza steudelii

description: Conyza steudelii Sch.Bip. ex A.Rich.  —
Habit: Herb.
Habitat: LMWF, LMDF, BZ, UMF, HZ; up to 3 500 m. Distribution: I.
 Voucher: Burguret Track, Alt. 3 492 m, 5 Feb. 2015, SAJIT 003096 (HIB).
References: Bussmann & Beck (1995a, 1998), Bussmann (1993, 1994), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 91, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
On the Heat Transfer in Rayleigh-Benard systems
Creators: name: Benzi, R.
name: Toschi, F.
name: Tripiccione, R.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: In this paper we discuss some theoretical aspects concerning the scaling laws of the Nusselt number versus the Rayleigh number in a Rayleigh-Benard cell. We present a new set of numerical simulations and compare our findings against the predictions of existing models. We then propose a new theory which relies on the hypothesis of Bolgiano scaling. Our approach generalizes the one proposed by Kadanoff, Libchaber and coworkers and solves some of the inconsistencies raised in the recent literature.
description: 10 pages, 5 figures
Radio follow-up of a candidate gamma-ray transient in the sky localization area of GW170608
Creators: name: Artkop, Kyle
name: Smith, Rachel
name: Corsi, Alessandra
name: Giacintucci, Simona
name: Peters, Wendy M.
name: Perna, Rosalba
name: Cenko, S. Bradley
name: Clarke, Tracy E.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: After the identification of a candidate $γ$-ray transient in the error region of the binary black hole (BBH) merger GW150914 by the \textit{Fermi} satellite, the question of whether BBH mergers can be associated to electromagnetic counterparts remains highly debated. Here, we present radio follow-up observations of GW170608, a BBH merger that occurred during the second observing run (O2) of the Advanced Laser Interferometer Gravitational-wave Observatory (LIGO). Our radio follow up focused on a specific field contained in the GW170608 sky localization area, where a candidate high-energy transient was detected by the \textit{Fermi} Large Area Telescope (LAT). We make use of data collected at 1.4\,GHz with the Karl G. Jansky Very Large Array (VLA), as well as with the VLA Low-band Ionosphere and Transient Experiment (VLITE). Our analysis is sensitive to potential radio afterglows with luminosity densities $L_{\rm 1.4\,GHz}\gtrsim 6\times10^{28}$\,erg\,s$^{-1}$\,Hz$^{-1}$. In the most optimistic theoretical models, $\approx 20\%$ of BBH events occurring in massive hosts could be associated with outflows as radio luminous as this. Although we find no evidence for the presence of a radio counterpart associated with the LAT candidate in the GW170608 error region, our analysis demonstrates the feasibility of future radio follow-up observations of well localized BBHs. Comparing our radio upper-limits with theoretical expectations for the radio afterglows potentially associated with jets launched in BBH mergers, we find that for jets of energy $\approx 10^{49}$\,erg seen on-axis, only jet angles $θ_{jet}\gtrsim 40^{\circ}$ are compatible with the observations.
description: 8 pages, 1 figure, 3 tables; version update to match the published one
Averages over curves with torsion
Creators: name: Oberlin, Daniel
name: Smith, Hart
name: Sogge, Christopher D.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42B15

description: We establish $L^p$ Sobolev mapping properties for averages over certain curves in $\R^3$, which improve upon the estimates obtained by $L^2-L^\infty$ interpolation.
Additional file 5: of Progress in public health risk communication in China: lessons learned from SARS to H7N9
Creators: name: Frost, Melinda
name: Richun Li
name: Moolenaar, Ronald
name: QunâAn Mao
name: Ruiqian Xie
Publisher: name: figshare
Year: 2019
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 60506 Virology

description: China Risk Comms Cap Building timeline 20170831.docx (DOCX 29 kb)
Near threshold neutral pion electroproduction on deuterium in chiral perturbation theory
Creators: name: Krebs, H.
name: Bernard, V.
name: Meißner, Ulf-G.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Near threshold neutral pion electroproduction on the deuteron is studied in the framework of baryon chiral perturbation theory at next-to-leading order in the chiral expansion. We develop the multipole decomposition for pion production off spin-1 particles appropriate for the threshold region. The existing data at photon virtuality k^2 = -0.1 GeV^2 can be described satisfactorily. Furthermore, the prediction for the S-wave multipole E_d at the photon point is in good agreement with the data.
description: 27 pp, 15 figs
Relaxation and revival of quasiparticles injected in an interacting quantum Hall liquid
Creators: name: Rodriguez, R. H.
name: Parmentier, F. D.
name: Ferraro, D.
name: Roulleau, P.
name: Gennser, U.
name: Cavanna, A.
name: Sassetti, M.
name: Portier, F.
name: Mailly, D.
name: Roche, P.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The one-dimensional, chiral edge channels of the quantum Hall effect are a promising platform in which to implement electron quantum optics experiments; however, Coulomb interactions between edge channels are a major source of decoherence and energy relaxation. It is therefore of large interest to understand the range and limitations of the simple quantum electron optics picture. Here we confirm experimentally for the first time the predicted relaxation and revival of electrons injected at finite energy into an edge channel. The observed decay of the injected electrons is reproduced theoretically within a Tomonaga-Luttinger liquid framework, including an important dissipation towards external degrees of freedom. This gives us a quantitative empirical understanding of the strength of the interaction and the dissipation.
description: Includes supplementary information
Drastic enhancement of the thermal Hall angle in a $d$-wave superconductor
Creators: name: Ueki, Hikaru
name: Morita, Hiroki
name: Ohuchi, Marie
name: Kita, Takafumi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A drastic enhancement of the thermal Hall angle in $d$-wave superconductors was observed experimentally in a cuprate superconductor and in CeCoIn$_5$ at low temperatures and very weak magnetic field [Phys. Rev. Lett. $\bf 86$, 890 (2001); Phys. Rev. B $\bf 72$, 214515 (2005)]. However, to the best of our knowledge, its microscopic calculation has not been performed yet. To study this microscopically, we derive the thermal Hall coefficient in extreme type-II superconductors with an isolated pinned vortex based on the augmented quasiclassical equations of superconductivity with the Lorentz force. Using it, we can confirm that the quasiparticle relaxation time and the thermal Hall angle are enhanced in $d$-wave superconductors without impurities of the resonant scattering because quasiparticles around the gap nodes which become dominant near zero temperature are restricted to the momentum in a specific orientation. This enhancement of the thermal Hall angle may also be observed in other nodal superconductors with large magnetic-penetration depth.
description: 11 pages, 11 figures
Methods for Empirical and Numerical Analysis of Tailings Flow Runout (CanBreach Project)
Creators: name: Ghahramani, Negar
name: Adria, Daniel
name: Innis, Sally
name: Rana, Nahyan M.
name: Dina, Evelyn
name: Kunz, Nadja C.
name: Evans, Stephen G.
name: Take, W. Andy
name: McDougall, Scott
Publisher: name: The University of British Columbia
Year: 2023

description: Tailings dam failures are capable of producing mass flows in the downstream environment. These tailings flows can travel at high velocities, cover long distances, and cause widespread inundation. The ability to understand and predict the mobility and behaviour of tailings flows is a crucial step in ensuring the safety of people, infrastructure, and the environment. In this paper, we summarize the outcomes of collaborative research projects over the past four years that developed improved predictive empirical and numerical models of potential tailings dam breaches and their downstream impacts. This work included: 1) development of a new tailings flow runout classification system; 2) compilation of detailed databases of historical tailings flows; 3) development of new empirical relationships between released volume and inundation area; 4) recalibration of an existing semi-empirical model adapted to tailings flows; 5) benchmarking of several existing numerical runout models; 6) analysis of sensitivities and uncertainties in numerical runout models; and 7) demonstration of a probabilistic approach to numerical runout prediction. The results of this research can help practitioners develop better inundation maps, dam classifications, and emergency preparedness and response plans in tailings management practice.
Conyza subscaposa O. Hoffm.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Conyza
Conyza subscaposa

description: Conyza subscaposa O.Hoffm.  —
Habit: Herb.
Habitat: LMWF, LMDF, BZ, UMF, HZ, AZ; up to 4 400 m. Distribution: II.
 Voucher: Chogoria Track, Alt. 2 807 m, 22 Jul. 2014, CPG 28558 (HIB, PE).
References: Young & Peacock (1985), Bussmann (1993, 1994), Bussmann & Beck (1995a), Abdi (2013), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 91, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Advantage distillation for device-independent quantum key distribution
Creators: name: Tan, Ernest Y. -Z.
name: Lim, Charles C. -W.
name: Renner, Renato
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive a sufficient condition for advantage distillation to be secure against collective attacks in device-independent quantum key distribution (DIQKD), focusing on the repetition-code protocol. In addition, we describe a semidefinite programming method to check whether this condition holds for any probability distribution obtained in a DIQKD protocol. Applying our method to various probability distributions, we find that advantage distillation is possible up to depolarising-noise values of $q \approx 9.1\%$ or limited detector efficiencies of $η\approx 89.1\%$ in a 2-input 2-output scenario. This exceeds the noise thresholds of $q \approx 7.1\%$ and $η\approx 90.7\%$ respectively for DIQKD with one-way error correction using the CHSH inequality, thereby showing that it is possible to distill secret key beyond those thresholds.
description: [v2] Corrected threshold detection efficiency for one-way error correction, reorganised material. [v3] Updated funding information
Parallel Batch-Dynamic Graph Connectivity
Creators: name: Acar, Umut A.
name: Anderson, Daniel
name: Blelloch, Guy E.
name: Dhulipala, Laxman
Publisher: name: arXiv
Year: 2019
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: In this paper, we study batch parallel algorithms for the dynamic connectivity problem, a fundamental problem that has received considerable attention in the sequential setting. The most well known sequential algorithm for dynamic connectivity is the elegant level-set algorithm of Holm, de Lichtenberg and Thorup (HDT), which achieves $O(\log^2 n)$ amortized time per edge insertion or deletion, and $O(\log n / \log\log n)$ time per query. We design a parallel batch-dynamic connectivity algorithm that is work-efficient with respect to the HDT algorithm for small batch sizes, and is asymptotically faster when the average batch size is sufficiently large. Given a sequence of batched updates, where $Δ$ is the average batch size of all deletions, our algorithm achieves $O(\log n \log(1 + n / Δ))$ expected amortized work per edge insertion and deletion and $O(\log^3 n)$ depth w.h.p. Our algorithm answers a batch of $k$ connectivity queries in $O(k \log(1 + n/k))$ expected work and $O(\log n)$ depth w.h.p. To the best of our knowledge, our algorithm is the first parallel batch-dynamic algorithm for connectivity.
description: This is the full version of the paper appearing in the ACM Symposium on Parallelism in Algorithms and Architectures (SPAA), 2019
Text Classification: Exploiting the Social Network
Creators: Alkhereyf, Sakhar Badr M
Publisher: name: Columbia University
Year: 2021
Subjects: Computer science
Social networks
Social networks--Computer network resources
Electronic mail messages

description: Within the context of social networks, existing methods for document classification tasks typically only capture textual semantics while ignoring the text’s metadata, e.g., the users who exchange emails and the communication networks they form. However, some work has shown that incorporating the social network information in addition to information from language is useful for various NLP applications, including sentiment analysis, inferring user attributes, and predicting interpersonal relations. In this thesis, we present empirical studies of incorporating social network information from the underlying communication graphs for various text classification tasks. We show different graph representations for different problems. Also, we introduce social network features extracted from these graphs. We use and extend graph embedding models for text classification. Our contributions are as follows. First, we have annotated large datasets of emails with fine-grained business and personal labels. Second, we propose graph representations for the social networks induced from documents and users and apply them on different text classification tasks. Third, we propose social network features extracted from these structures for documents and users. Fourth, we exploit different methods for modeling the social network of communication for four tasks: email classification into business and personal, overt display of power detection in emails, hierarchical power detection in emails, and Reddit post classification. Our main findings are: incorporating the social network information using our proposed methods improves the classification performance for all of the four tasks, and we beat the state-of-the-art graph embedding based model on the three tasks on email; additionally, for the fourth task (Reddit post classification), we argue that simple methods with the proper representation for the task can outperform a state-of-the-art generic model.
Additional file 4: of Progress in public health risk communication in China: lessons learned from SARS to H7N9
Creators: name: Frost, Melinda
name: Richun Li
name: Moolenaar, Ronald
name: QunâAn Mao
name: Ruiqian Xie
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology

description: China Risk Communication capacity then and now comparison TableÂ 08312017.docx (DOCX 16 kb)
Digital Predistortion for Multiuser Hybrid MIMO at mmWaves
Creators: name: Brihuega, Alberto
name: Anttila, Lauri
name: Abdelaziz, Mahmoud
name: Tufvesson, Fredrik
name: Valkama, Mikko
Publisher: name: arXiv
Year: 2019
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Efficient mitigation of power amplifier (PA) nonlinear distortion in multi-user hybrid precoding based broadband mmWave systems is an open research problem. In this article, we first carry out detailed signal and distortion modeling in broadband multi-user hybrid MIMO systems, with a bank of nonlinear PAs in each subarray, while also take the inevitable crosstalk between the antenna/PA branches into account. Building on the derived models, we then propose an efficient closed-loop (CL) digital predistortion (DPD) solution that requires only a single-input DPD unit per transmit chain or subarray, despite crosstalk, providing substantial complexity-benefit compared to the state-of-the art multi-dimensional DPD solutions. We show that under spatially correlated multipath propagation, each DPD unit can provide linearization towards every intended user, or more generally, towards all spatial directions where coherent propagation is taking place, and that the proposed CL DPD system is robust against crosstalk}. Extensive numerical results building on practical measurement-based mmWave PA models are provided, demonstrating and verifying the excellent linearization performance of the proposed DPD system in different evaluation scenarios.
description: final version of the article; accepted for publication in IEEE Transactions on Signal Processing
A Derivation of Three-Dimensional Inertial Transformations
Creators: name: Goy, Francois
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The derivation of the transformations between inertial frames made by Mansouri and Sexl is generalised to three dimensions for an arbitrary direction of the velocity. Assuming lenght contraction and time dilation to have their relativistic values, a set of transformations kinematically equivalent to special relativity is obtained. The ``clock hypothesis'' allows the derivation to be extended to accelerated systems. A theory of inertial transformations maintaining an absolute simultaneity is shown to be the only one logically consistent with accelerated movements. Algebraic properties of these transformations are discussed. Keywords: special relativity, synchronization, one-way velocity of light, ether, clock hypothesis.
description: 16 pages (A5), Latex, one figure, to be published in Found. Phys. Lett. (1997)
Testing the Assumptions of the Network Paradigm for Studying Depression
Creators: Huang, Debbie
Publisher: name: Columbia University
Year: 2021
Subjects: Epidemiology
Mental health
Depression, Mental--Treatment
Depression, Mental--Epidemiology
Sadness
Anhedonia

description: Depression is a major public health problem. Decades of research have been conducted to create a classification system aligned with the complex phenomenological features of depression. The dominant classification system for depression is the latent paradigm, which conceptualizes observable symptoms of depression as effects of an underlying disorder. There is increasing evidence, however, that the latent model is inadequate to inform the prognosis and treatment of depression. Specifically, evidence is accumulating that symptoms of depression do not necessarily arise due to an underlying condition, but that symptoms occur as a network in which each one is causally related to a previous symptom. This dissertation critically evaluated the underlying assumptions of this “network paradigm,” one of the frameworks which had been proposed as an alternative to the traditional latent paradigm, as an appropriate model for studying depression. The first chapter systematically evaluated empirical depression network studies regarding whether the study design included an examination of the paradigm’s assumptions. In the second chapter, I investigated the relationships among depressive symptoms and determined whether causal relationships among depressive symptoms, a key assumption underlying this paradigm, could be a plausible explanation. The last chapter investigated a central controversy within the network literature regarding consistent findings and measurement error. The first chapter found that the majority of depression network studies published in the literature were not capable of providing empirical support of symptom causal relationships and often neglected to investigate the impact of measurement error. The second chapter estimated a significant relationship between two depressive symptoms - sadness and anhedonia, using an inverse probability treatment-weighted regression estimation approach in the context of longitudinal data. Causal relationships among symptoms, a key assumption underlying the network paradigm, may be a plausible explanation for the depressive symptom relationships. The third chapter found that statistical network models are not robust to measurement error through a series of simulation studies. Measurement error remained a general threat against the network paradigm, and existing network findings should be interpreted with caution. Overall, the network paradigm may be appropriate for study depression, but existing findings should be interpreted with caution. There is a need to explore the fundamental assumptions of paradigms prior to widespread application.
O'ZBEKISTON RESPUBLIKASI IQTISODIYOT TARMOQLARIGA XORIJIY INVESTITSIYALARNI JALB QILISH IMKONIYATLARI, SHART-SHAROITLARI VA MUAMMOLARI
Creators: name: Achilov, Uyg'unjon
name: Ortiqov, Feruz
Publisher: name: Zenodo
Year: 2024

description: Maqolada O’zbekistonda iqtisodiyot tarmoqlariga xorijiy investitsiyalarni jalb qilish imkoniyatlari, shart-sharoitlari va muammolari atroflicha tadqiq etilgan. O’zbekistonda xorijiy investitsiyalarning statistik ko’rsatkichlari tahlil qilingan. Muammolarni bartaraf etishga qaratilgan xulosa va takliflar ishlab chiqilgan.
Testing a Model of Black Cultural Strength Using Structural Equation Modeling
Creators: Johnson, Veronica Elaine
Publisher: name: Columbia University
Year: 2017
Subjects: Counseling psychology
African Americans
Structural equation modeling
Blacks--Race identity

description: The present study examined a model of Black Cultural Strength and its relation to psychosocial health (N = 496). The purpose of the current study was to test a model of Black Cultural Strength, an interdependent combination of Black racial identity, communalism, cultural spirituality, positive racial socialization, and effective racism-related coping. Further, the study sought to understand if Black Cultural Strength could predict psychosocial health, a combination of life satisfaction and psychological well-being. The Black Cultural Strength model, which was tested through Structural Equation Modeling (SEM), hypothesized that higher levels of Black Cultural Strength lead to increased self-reported psychological well-being and life satisfaction. Results from this study indicated that Black Americans’ levels of mature racial identity, exposure to positive racial socialization (preparation for bias and cultural socialization), effective racism related coping (constrained resistance, empowered action, confrontation, and spiritual coping), culturally-based spirituality, and communalism were all interdependent and loaded onto one factor, Black Cultural Strength. Further, results showed that Black Cultural Strength was positively predictive of Blacks’ psychosocial health. Although the proposed hypotheses were supported, and an overall acceptable model fit was found, two modifications were made to the original proposed model. These modifications were conducted with theory and past empirical findings in consideration, therefore the current study provides strong evidence to support that interdependent Black cultural values are positively predictive of psychosocial health. Limitations, clinical implications, and further directions of research are discussed.
Limitations and Possible Improvement of Dam Breach Studies
Creators: name: Williams, Holly
name: Hockley, Daryl
name: LePoudre, Chad
name: Kozikowski, Michal
Publisher: name: The University of British Columbia
Year: 2023

description: Tailings dam breach models are commonly used for both dam classification and emergency response planning. While many models are well executed and meet all the requirements of recent dam breach guidance, there are still significant limitations in the current state of practice. When model predictions are used for dam classification, limitations can be addressed by simply being more conservative in applying dam classification rules. However, when dam breach modelling is used as a basis for emergency response planning, limitations in predictions can put additional lives at risk. This paper summarizes the limitations observed in a review of 18 dam breach studies from 23 high or extreme risk tailings facilities. The review included studies by 5 consulting companies, from sites on 3 continents with widely different climate and topography, and models spanning the range of behaviours from thin slurry flows to non-Newtonian “mud-flows” to frictional flow “runouts”. Examples are used to show how the observed limitations can lead to underestimated or overlooked impacts. Importantly, many of the observed limitations were found to arise from incomplete communication of model uncertainty, rather than weaknesses in the currently available models. A revised approach to dam breach studies is recommended and includes a much richer interface between the modellers, site staff, and emergency planners to ensure all potential impacts are considered, even those beyond the capabilities of currently available models.
Conyza tigrensis Oliv. & Hiern
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Conyza
Conyza tigrensis

description: Conyza tigrensis Oliv. & Hiern  —
Habit: Herb.
Habitat: LMWF; 1 700–3 000 m. Distribution: II.
Voucher: N/A.
References: Bussmann (1994), Beentje (2002), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 91, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Additional file 3: of Progress in public health risk communication in China: lessons learned from SARS to H7N9
Creators: name: Frost, Melinda
name: Richun Li
name: Moolenaar, Ronald
name: QunâAn Mao
name: Ruiqian Xie
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 60506 Virology

description: China Risk Comms Table 3 Post event results 2017.docx (DOCX 14 kb)
Tetrahedra and Their Nets: Mathematical and Pedagogical Implications
Creators: Mussa, Derege
Publisher: name: Columbia University
Year: 2013
Subjects: subject: Mathematics--Study and teaching
subject: Mathematics
subject: FOS: Mathematics
subject: Tetrahedra

description: If one has three sticks (lengths), when can you make a triangle with the sticks?  As long as any two of the lengths sum to a value strictly larger than the third length one can make a triangle. Perhaps surprisingly, if one is given 6 sticks (lengths) there is no simple way of telling if one can build a tetrahedron with the sticks. In fact, even though one can make a triangle with any triple of three lengths selected from the six, one still may not be able to build a tetrahedron. At the other extreme, if one can make a tetrahedron with the six lengths, there may be as many 30 different (incongruent) tetrahedra with the six lengths.
Although tetrahedra have been studied in many cultures (Greece, India, China, etc.) Over thousands of years, there are surprisingly many simple questions about them that still have not been answered. This thesis answers some new questions about tetrahedra, as well raising many more new questions for researchers, teachers, and students. It also shows in an appendix how tetrahedra can be used to illustrate ideas about arithmetic, algebra, number theory, geometry, and combinatorics that appear in the Common Cores State Standards for Mathematics (CCSS -M).  In particular it addresses representing three-dimensional polyhedra in the plane. Specific topics addressed are a new classification system for tetrahedra based on partitions of an integer n, existence of tetrahedra with different edge lengths, unfolding tetrahedra by cutting edges of tetrahedra, and other combinatorial aspects of tetrahedra.
Testing the Ability to Apply Mathematical Knowledge
Creators: Tam, Kai Chung
Publisher: name: Columbia University
Year: 2018
Subjects: Mathematics--Study and teaching
Mathematical ability--Testing
Educational evaluation

description: Since the 1960s, the advocacy of teaching mathematics so as to be useful is not without hindrance in school curricula, partly due to the lack of appropriate assessment tools. Practical approaches have been accumulating quickly, but researchers showed that they are not satisfactory in testing students’ ability to apply mathematical knowledge, be they “word problems” in school textbooks, national tests, or large-scale international assessments. To understand the causes behind the dissatisfaction, there is a need to reveal (1) the theories that are used in the test designs, and (2) what the actual assessments are in various curricula. This motive leads to the purpose of the current study, which is to identify empirically consistent theories about students’ ability to apply; the results can be organized as a framework to analyze assessment tools such as PISA, as well as various curricular materials.
      Based on the current theories, a framework of assessment analysis is created in order to study the coverage of modeling steps of public assessment items. This study finds that, though many education systems have claims of introducing modeling and application into their curricula, high-stake assessments mostly involve a small fraction of the steps that are required in a full modeling cycle. It furthers an earlier result that certain textbooks, though claiming the importance of modeling, almost ignored the first and last steps of modeling. It is found in this study that public assessments are even more limited: most test items that are supposed to test students’ knowledge of application involve only one or two steps of modeling. Furthermore, the tool “modeling spectrum” that is used in the analysis does not only reveal how modeling steps are covered, but can also assists educators to improve or create problems with modeling and application.
Marginal Fermi liquid in twisted bilayer graphene
Creators: name: González, J.
name: Stauber, T.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Linear resistivity at low temperatures is a prominent feature of high-T$_c$ superconductors which has also been found recently in twisted bilayer graphene. We show that due to an extended van Hove singularity (vHS), the $T$-linear resistivity can be obtained from a microscopic tight-binding model for filling factors close to the vHS. The linear behavior is shown to be related to the linear energy dependence of the electron quasiparticle decay rate which implies the low-energy logarithmic attenuation of the quasiparticle weight. These are distinctive features of a marginal Fermi liquid, which we also see reflected in the respective low-temperature logarithmic corrections of the heat capacity and the thermal conductivity, leading to the consequent violation of the Wiedemann-Franz law. We also show that there is a crossover at $T \sim 6$ K from the marginal Fermi liquid regime to a regime dominated by excitations on the Dirac cone right above the vHS that also yields a linear resistivity albeit with smaller slope, in agreement with experimental observations.
description: 12 pages, 10 figures
A Langevin equation for the energy cascade in fully-developed turbulence
Creators: name: Marcq, Philippe
name: Naert, Antoine
Publisher: name: arXiv
Year: 1998
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Experimental data from a turbulent jet flow is analysed in terms of an additive, continuous stochastic process where the usual time variable is replaced by the scale. We show that the energy transfer through scales is well described by a linear Langevin equation, and discuss the statistical properties of the corresponding random force in detail. We find that the autocorrelation function of the random force decays rapidly: the process is therefore Markov for scales larger than Kolmogorov's dissipation scale $η$. The corresponding autocorrelation scale is identified as the elementary step of the energy cascade. However, the probability distribution function of the random force is both non-Gaussian and weakly scale-dependent.
description: 25 pages, 10 figures, elsart.sty, to be published in Physica D
The tensor Dirac equation in Riemannian space
Creators: name: Marchuk, N. G.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 35Q40

description: We suggest a tensor equation on Riemannian manifolds which can be considered as a generalization of the Dirac equation for the electron. The tetrad formalism is not used. Also we suggest a new form of the tensor Dirac equation with a Spin(1,3) gauge symmetry in Minkowski space.
description: Latex 19 pages
Strong Coupling between Microwave Photons and Nanomagnet Magnons
Creators: name: Hou, Justin T.
name: Liu, Luqiao
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Coupled microwave photon-magnon hybrid systems offer promising applications by harnessing various magnon physics. At present, in order to realize high coupling strength between the two subsystems, bulky ferromagnets with large spin numbers are utilized, which limits their potential applications for scalable quantum information processing. In this paper, by enhancing single spin coupling strength using lithographically defined superconducting resonators, we report high cooperativities between a resonator mode and a Kittel mode in nanometer thick Permalloy wires. The on-chip, lithographically scalable, and superconducting quantum circuit compatible design provides a direct route towards realizing hybrid quantum systems with nanomagnets, whose coupling strength can be precisely engineered and dynamic properties can be controlled by various mechanisms derived from spintronic studies.
Texts—Textures—Intertexts: The Orchestral Worlds of Brian Cherney
Creators: Ricketts, Matthew Jonathan
Publisher: name: Columbia University
Year: 2017
Subjects: Music
Orchestral music

description: This essay traces the development of the orchestral music of Brian Cherney (b. 1942, Peterborough ON). While not a comprehensive overview of his entire catalogue of orchestral works, I show the emergence of Cherney’s characteristic approach to the medium through the framework of extra-musical poetic texts, a painterly approach to orchestral textures, and a penchant for spinning intricate networks of self-quotation and references to extant musics (intertexts). Beginning with early student works (Chapter One: Two Songs for Soprano and Orchestra, 1963; Violin Concerto, 1963) and emergent transitional works (Chapter Two: Seven Images, 1971; Adieux, 1980), my tripartite framework culminates in Chapter Three with Cherney’s orchestral masterpiece, Transfiguration (1990). Reference is made to the musico-philosophical work of Theodor Adorno, Daniel Albright and Carolyn Abbate et al., alongside a host of musicological and music-theoretical sources. Further informed by details drawn from Cherney’s autobiographical sketches and lengthy correspondences with the author, I investigate these works with a hermeneutics which seeks to both draw out and draw together Cherney’s expressive reticence, imaginative fecundity and finely-honed technical prowess.
Weighted Strichartz estimates and global existence for semilinear wave equations
Creators: name: Georgiev, V.
name: Lindblad, Hans
name: Sogge, Christopher D.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35L70

description: We prove certain weighted Strichartz estimates and use these to prove a sharp theorem for global existence of small amplitude solutions of $\square u= |u|^p$, thus verifying the so-called "Strauss conjecture".
title: Braunschweig im hohen Mittelalter - die Stadt Heinrichs des Löwen?
Creators: name: Rötting, Hartmut
Publisher: name: Goltze
Year: 1996
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Jahrbuch der BWG
subject: 90

description: Das Thema "Braunschweig als Stadt im hohen Mittelalter" stellt sich dem Archäologen als Untersuchung des materiellen Überrestes dar: gleichsam als eine Realie, die er vergleichend, stichprobenartig und großflächig auszugraben hat. Dies bedeutet beispielsweise bei einer archäologisch zu beantwortenden alltagskulturellen Fragestellung nach einer sich herausbildenden städtischen Siedlungsform und Lebensweise, daß Topographie, Hausbau und Grundstücksbebauung und deren Wandel bzw. Kontinuität vor allem zu untersuchen sind.
Eine volkstümliche, noch heute werbewirksame Instrumentalisierung erschlossener wie hypothetisch abgeleiteter früher Stadtgeschichte hat im Verlauf einer historistischen Heinrich-Rezeption Braunschweig um die Jahrhundertwende als "die Stadt Heinrichs des Löwen" bezeichnet.
Three-boson relativistic bound states with zero-range interaction
Creators: name: Carbonell, J.
name: Karmanov, V. A.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: For the zero-range interaction providing a given mass M_2 of the two-body bound state, the mass M_3 of the relativistic three-boson state is calculated. We have found that the three-body system exists only when M_2 is greater than a critical value M_c approximately 1.43 m (m is the constituent mass). For M_2=M_c the mass M_3 turns into zero and for M_2
description: 7 pages, 4 figures