cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
“INKE-cubating” Research Networks, Projects, and Partnerships: Reflections on INKE’s Fifth Year
Creators: name: Siemens, Lynne
Publisher: name: HSSCommons
Year: 2022
Subjects: Digital humanities

description:
Humanists are participating in collaborations with others in the academy and beyond to explore increasingly complex research questions with technologically oriented methodologies and access to advice, mentoring, technology, knowledge, and funds. Although these projects have clear benefits for all those involved, these collaborations are not without their challenges. Such styles of partnership tend to be more common on the science side of campus. As a result, little is understood about the ways that they might work within the humanities and the range of benefits that can be available to members within a mature collaboration. To this end, this paper will examine the experiences of Implementing New Knowledge Environments (INKE) as a mature, large-scale collaboration working with academic and non-academic partners and will provide some insight into best practices.
Quest for nuclear quadrupole relaxation in HgCa$_{2}$Ba$_{2}$Cu$_{3}$O$_{8+δ}$
Creators: name: Itoh, Yutaka
name: Ogawa, Akihiro
name: Adachi, Seiji
Publisher: name: arXiv
Year: 2024
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We derived a simple reduced form from the exact solution of the mixed magnetic and quadrupolar nuclear spin--lattice relaxation function at the central transition line of a quadrupole-split NMR spectrum for the nuclear spin $I$ = 3/2. The reduced form of the exact solution could be extended to include inhomogeneous relaxation effects. From the application of the reduced form to the $^{63}$Cu nuclear spin--lattice relaxation curves in the high-$T_\mathrm{c}$ superconductors of $^{63}$Cu-enriched triple-layer HgBa$_2$Ca$_2$Cu$_3$O$_{8+δ}$, we estimated the predominant magnetic relaxation rate $^{63}W_M$ and the upper limit of a weak nuclear electric quadrupole spin--lattice relaxation rate $^{63}W_Q$.
description: 6 pages, 5 figures, revised introduction and section 4, added references, results unchanged
Fast and reliable μTAD for creatinine monitoring by patients
Creators: name: Erenas, Miguel M
name: Arroyo, Manuel M
name: Orbe-Payá, Ignacio de
name: Cantrell, Kevin
name: Dobado, Jose A
name: Salinas-Castillo, Alfonso
name: Capitán-Vallvey, Luís Fermín
Publisher: name: Zenodo
Year: 2020
Subjects: µTAD
creatinine
colorimetry
urine

description: Creatinine is a key indicator of renal function making pretty important its quantification. Traditional analytical methodologies are based on enzymes and chromogenic reactions that presents a main drawback as it is a high inter-laboratory variation due to the calibration process that is required in this method each it is used 1. That is why it is needed the development of analytical methods that can provide reliable results and, if possible, in a short period of time. The development of receptors that interact selectively with creatinine or creatininium cation, by non-covalent interactions, has rise up along the last years. One of the receptor recently reported is an aryl-substituted monophosphonate-bridged calix[4]pyrrole synthetic receptor, have been included in different optical (absorbance)2 and electrochemical (potentiometry)3 sensing devices, allowing to obtaining much better results in terms of inter-laboratory variation, but being performed by trained personal using tabletop instrumentation. In this communication we present a microfluidic Point-of-Care (POC) device based on thread (µTAD) that fulfils the ASSURED guidelines of the OMS, permitting to any patient the determination of creatinine in urine, using its smartphone. This kind of devices are increasing its relevance every day, because permits to patients the monitoring of the desired parameter by themselves in a very fast, easy and reliable way, without any kind of training required. The µTAD here described (Figure 1) is composed by a piece of thread prepared by adding 5 µL of pH 3.8 acetic acid/sodium acetate buffer 0.1 M, to adjust the pH of sample and 0.5 µL of a cocktail that contains: a selective receptor for creatininium (aryl-substituted monophosphonate-bridged calix[4]pyrrole); a lipophilic pH indicator which optical properties changes depending on creatinine concentration (ETH 7075); a lipophilic anionic salt (potassium tetrakis-[3,5-bis-(trifluoro-methyl)-phenyl]-borate); a plasticizer (o-nitrophenyl-octylether) and a PVC, all of them dissolved in tetrahydrofuran. The patient only have to add 10 µL of urine and wait for 30 s to digitalize and analyze its sensing area in terms of color coordinates by a smartphone. H parameter from the HSV color space is obtained and used as analytical parameter. The µTAD developed permits the determination of creatinine in urine from 1.6·10-6 to 5.0·10-2 M, in 30 s just adding 10 µL of sample and using the patient’s smartphone, with a precision around 4%.
“Faster Alone, Further Together”: Reflections on INKE’s Year Six
Creators: name: Siemens, Lynne
Publisher: name: HSSCommons
Year: 2022
Subjects: Digital humanities

description:
Background: This article examines Implementing New Knowledge Environments’ (INKE) experiences as a mature, large-scale collaboration working with academic and non-academic partners and provides some insight into best practices. It looks at the sixth year of funded research.

Analysis: The study uses semi-structured interviews with questions focused on the nature of collaboration with selected members of the INKE research team. Data analysis employs a grounded theory approach.

Conclusion and implication: The interviewees found the experience of collaborating within INKE to be positive with some ongoing challenges. The team is winding down as it moves into the final year of funded research. This suggests an arc of collaboration, with intensity of collaboration building from the first year to the most intensive time in the middle years and then winding down in the last years of grant funding. This article contributes to those lessons about collaboration by exploring the lived experience of a long-term, large-scale research project.
User Identity Linkage on Social Networks: A Review of Modern Techniques and Applications
Creators: name: Senette, Caterina
name: Siino, Marco
name: Tesconi, Maurizio
Publisher: name: arXiv
Year: 2024
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: In an Online Social Network (OSN), users can create a unique public persona by crafting a user identity that may encompass profile details, content, and network-related information. As a result, a relevant task of interest is related to the ability to link identities across different OSNs. Linking users across social networks can have multiple implications in several contexts both at the individual level and at the group level. At the individual level, the main interest in linking the same identity across social networks is to enable a better knowledge of each user. At the group level, linking user identities through different OSNs helps in predicting user behaviors, network dynamics, information diffusion, and migration phenomena across social media. The process of tying together user accounts on different OSNs is challenging and has attracted more and more research attention in the last fifteen years. The purpose of this work is to provide a comprehensive review of recent studies (from 2016 to the present) on User Identity Linkage (UIL) methods across online social networks. This review aims to offer guidance for other researchers in the field by outlining the main problem formulations, the different feature extraction strategies, algorithms, machine learning models, datasets, and evaluation metrics proposed by researchers working in this area. The proposed overview takes a pragmatic perspective to highlight the concrete possibilities for accomplishing this task depending on the type of available data.
description: 25 pages, 4 figures
How the Schwarzschild-de Sitter horizons remain in thermal equilibrium at vastly different temperatures
Creators: name: Miranda, Marcello
name: Rinaldi, Massimiliano
name: Faraoni, Valerio
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Tolman-Ehrenfest criterion of thermal equilibrium for a static fluid in a static spacetime is generalized to stationary heat conduction, in the approximation in which backreaction is negligible. Applying this generalized criterion to the Hawking radiation in the Schwarzschild-de Sitter geometry shows that the two horizons (which act as thermostats) remain in thermal equilibrium. The temperature of the radiation fluid interpolates between the temperatures at the horizons, with a static analytic profile that is given explicitly.
description: 7 pages
A nonlinear, nondispersive energy balance for surfzone waves: infragravity wave dynamics on a sloping beach
Creators: name: Rijnsdorp, Dirk P.
name: Smit, Pieter B.
name: Guza, R. T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: A fully nonlinear non-dispersive energy balance for surfzone waves is derived based on the nonlinear shallow water equations (NLSWE) to study the nearshore dynamics of infragravity (IG) waves. Based on simulations of waves on a relatively moderate and mild beach slope with a non-hydrostatic wave-flow model (SWASH), the new theory shows that spatial gradients in IG energy flux are nearly completely balanced by the combined effect of bottom stresses and predominantly nonlinear triad interactions. The new balance confirms many features of existing weakly nonlinear theories, and yields an improved description in the inner surfzone where waves become highly nonlinear. A gain of IG energy flux throughout the shoaling and outer surfzones is driven by triad interactions between IG waves and pairs of sea-swell (SS) waves. The IG energy flux decreased in the inner surfzone, primarily through an energy cascade to the swell-band and super-harmonic frequencies where wave energy is ultimately dissipated. Dissipation by bottom friction was weak on both slopes. IG wave breaking, characterized by triads between three IG or two IG waves and one SS wave, was significant only deep inside the surfzone of the mild slope. Even though IG waves broke on the mild slope, nonlinear interactions between IG waves and pairs of SS waves were responsible for at least half of the net IG flux loss.
Entwicklung und Vermittlung von digitalen Technologien
Creators: name: Haas, Claudia
Publisher: name: Zenodo
Year: 2020
Subjects: Public Interest Tech
Engagement
Zivilgesellschaft
Ehrenamt
Open data
Civic tech
Jugend
Digitale Medien
citizen engagement
citizen participation
collaboration
citizen sourcing
open source

description: Eine per Messenger vereinbarte Verabredung, das praktische Projektmanagement-Tool bei der Arbeit oder die regelmäßigen Videokonferenzen mit der Familie – unser Alltag ist durchdrungen von digitalen Hilfsmitteln, Plattformen, Anwendungen. Je besser man die dahinterstehende Technologie versteht, desto effizienter kann man sie nutzen und für gemeinwohlorientierte Interessen einsetzen. Insbesondere junge Menschen verbinden technologisches Know-how mit gemeinwohlorientiertem Denken und Handeln auf innovative Weise. Diese Form der Mitgestaltung der digitalen Gesellschaft erfolgt unter anderem in Netzwerken und Gemeinschaften, die sogenannte Civic Tech oder Public Interest Tech (deutsch: zivilgesellschaftliche Technologien) entwickeln. Andere Initiativen geben ihre Expertise für die Technologieentwicklung in Bildungsprojekten an andere weiter. Als neue Form des gesellschaftlichen Engagements sind Civic-Tech-Gemeinschaften ein wichtiger Baustein für einen selbstbestimmten kompetenten Umgang mit Informationstechnologien. Sie befähigen die Zivilgesellschaft, die Digitalisierung langfristig mitzugestalten.
A hyper-reduced MAC scheme for the parametric Stokes and Navier-Stokes equations
Creators: name: Chen, Yanlai
name: Ji, Lijie
name: Wang, Zhu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The need for accelerating the repeated solving of certain parametrized systems motivates the development of more efficient reduced order methods. The classical reduced basis method is popular due to an offline-online decomposition and a mathematically rigorous {\em a posterior} error estimator which guides a greedy algorithm offline. For nonlinear and nonaffine problems, hyper reduction techniques have been introduced to make this decomposition efficient. However, they may be tricky to implement and often degrade the online computation efficiency. To avoid this degradation, reduced residual reduced over-collocation (R2-ROC) was invented integrating empirical interpolation techniques on the solution snapshots and well-chosen residuals, the collocation philosophy, and the simplicity of evaluating the hyper-reduced well-chosen residuals. In this paper, we introduce an adaptive enrichment strategy for R2-ROC rendering it capable of handling parametric fluid flow problems. Built on top of an underlying Marker and Cell (MAC) scheme, a novel hyper-reduced MAC scheme is therefore presented and tested on Stokes and Navier-Stokes equations demonstrating its high efficiency, stability and accuracy.
A universal tripartite entanglement signature of ungappable edge states
Creators: name: Siva, Karthik
name: Zou, Yijian
name: Soejima, Tomohiro
name: Mong, Roger S. K.
name: Zaletel, Michael P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Gapped two-dimensional topological phases can feature ungappable edge states which are robust even in the absence of protecting symmetries. In this work we show that a multipartite entanglement measure recently proposed in the context of holography, the Markov gap, provides a universal diagnostic of ungappable edge states. Defined as a difference of the reflected entropy and mutual information $h(A:B) = S_R(A:B) - I(A:B)$ between two parties, we argue that for $A,B$ being adjacent subregions in the bulk, $h=\frac{c_+}{3}\log 2$, where $c_+$ is the minimal total central charge of the boundary theory. As evidence, we prove that $h=0$ for string-net models, and numerically verify that $h=\frac{|C|}{3}\log 2$ for a Chern-$C$ insulator. Our work establishes a unique bulk entanglement criteria for the presence of a conformal field theory on the boundary.
description: 5+11 pages, 4+5 figures
A compact inertial nano-positioner operating at cryogenic temperatures
Creators: name: Das, Pritam
name: Dutta, Sulagna
name: S., Krishna K.
name: Jesudasan, John
name: Raychaudhuri, Pratap
Publisher: name: arXiv
Year: 2024
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Nano-positioning plays a very important role in applications such as scanning probe microscopy and optics. We report the development of a compact inertial nanopositioner along with fully computer interfaced electronics operating down to 2 K, and its use in our fully automated needle-anvil type Point Contact Andreev Reflection (PCAR) apparatus. We also present the fully automated operational procedures using LabVIEW interface with our home-built electronics. The point contact spectroscopy probe has been successfully used to perform PCAR measurements on elemental superconductors at low temperatures. The small footprint of our nano-positioner makes it ideally suited for incorporation in low temperature scanning probe microscopes and makes this design versatile for various research and industrial purposes.
The linear-mixing approximation in silica-water mixtures at planetary conditions
Creators: name: Darafeyeu, Valiantsin
name: Rimle, Stephanie
name: Mazzola, Guglielmo
name: Helled, Ravit
Publisher: name: arXiv
Year: 2024
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The Linear Mixing Approximation (LMA) is often used in planetary models for calculating the equations of state (EoSs) of mixtures. A commonly assumed planetary composition is a mixture of rock and water. Here we assess the accuracy of the LMA for pressure-temperature conditions relevant to the interiors of Uranus and Neptune. We perform MD simulations using ab-initio simulations and consider pure-water, pure-silica, and 1:1 and 1:4 silica-water molecular fractions at temperature of 3000 K and pressures between 30 and 600 GPa. We find that the LMA is valid within a few percent (<~5%) between ~150-600 Gpa, where the sign of the difference in inferred density depends on the specific composition of the mixture. We also show that the presence of rocks delays the transition to superionic water by ~70 GPa for the 1:4 silica-water mixture. Finally, we note that the choice of electronic theory (functionals) affect the EoS and introduces an uncertainty in of the order of 10% in density. Our study demonstrates the complexity of phase diagrams in planetary conditions and the need for a better understanding of rock-water mixtures and their effect on the inferred planetary composition.
description: Accepted for publication in ApJ
Data from: Variety and quantity of dietary insoluble fibers intake from different sources and risk of new-onset diabetes.
Creators: name: Yang, Sisi
name: Liu, Chengzhang
name: Ye, Ziliang
name: Zhou, Chun
name: liu, mengyi
name: Zhang, Yanjun
name: Wu, Qimeng
name: Zhang, Zhuxian
name: He, Panpan
name: Zhang, Yuanyuan
name: Li, Huan
name: Qin, Xianhui
Publisher: name: figshare
Year: 2022
Subjects: subject: 110306 Endocrinology
subject: FOS: Clinical medicine

description: Supplemental materials for "Variety and quantity of dietary insoluble fibers intake from different sources and risk of new-onset diabetes"
Polychaetes of the New York Bight: A key and a discussion of the ecology of the dominant species
Creators: name: No Name Supplied
Publisher: name: No Publisher Supplied
Year: 1974

description: The major portion of this report is an identification key to the polychaetes of the New York Bight. The key covers polychaetes collected on six surveys at a site twelve miles south of Fire Island. An intro­duction to the key defines terms which may be unfamiliar. A discussion of the data and a summary of the life histories of the five most common polychaetes in the samples follows the key. Possible relationships between life histories and abundance are suggested.
Interlacing Eigenvectors of Large Gaussian Matrices
Creators: name: Attal, Elie
name: Allez, Romain
Publisher: name: arXiv
Year: 2024
Subjects: subject: Probability (math.PR)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Finance (q-fin.MF)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: We consider the eigenvectors of the principal minor of dimension $n< N$ of the Dyson Brownian motion in $\mathbb{R}^{N}$ and investigate their asymptotic overlaps with the eigenvectors of the full matrix in the limit of large dimension. We explicitly compute the limiting rescaled mean squared overlaps in the large $n\,, N$ limit with $n\,/\,N$ tending to a fixed ratio $q\,$, for any initial symmetric matrix $A\,$. This is accomplished using a Burgers-type evolution equation for a specific resolvent. In the GOE case, our formula simplifies, and we identify an eigenvector analogue of the well-known interlacing of eigenvalues. We investigate in particular the case where $A$ has isolated eigenvalues. Our method is based on analysing the eigenvector flow under the Dyson Brownian motion.
Resolution Exchange with Tunneling for Enhanced Sampling of Protein Landscapes
Creators: name: Yasar, Fatih
name: Ray, Alan J.
name: Hansmann, Ulrich H. E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Biological Physics (physics.bio-ph)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Simulations of protein folding and protein association happen on timescales that are orders of magnitude larger than what can typically be covered in all-atom molecular dynamics simulations. Use of low-resolution models alleviates this problem but may reduce the accuracy of the simulations. We introduce a replica-exchange-based multiscale sampling technique that combines the faster sampling in coarse-grained simulations with the potentially higher accuracy of all-atom simulations. After testing the efficiency of our Resolution Exchange with Tunneling (ResET) in simulations of the Trp-cage protein, an often used model to evaluate sampling techniques in protein simulations, we use our approach to compare the landscape of wild type and A2T mutant Abeta 1-42 peptides. Our results suggest a mechanism by that the mutation of a small hydrophobic Alanine (A) into a bulky polar Threonine (T) may interfere with the self-assembly of Abeta - fibrils.
Kollaborative Problemlösung und Wissensproduktion
Creators: name: Haas, Claudia
Publisher: name: Zenodo
Year: 2020
Subjects: Public Interest Tech
Engagement
Zivilgesellschaft
Ehrenamt
Open Data
Civic Tech
Digitale Infrastruktur
Digitale Medien
Citizen Engagement
Citizen Participation
Collaboration
Citizen Sourcing
Open Source
Participatory Mapping

description: Seit Bestehen des Internets sind nicht nur Unmengen an Informationen öffentlich zugänglich geworden: Die Digitalisierung hat auch eine Vielzahl kollaborativer und partizipatorischer digitaler Praktiken hervorgebracht, wie zum Beispiel die kollektive Generierung von Wissen, die gemeinsame Sammlung von (Geo-)Daten und der produktive Umgang mit Daten mit Erkenntniswert für die Zivilgesellschaft. Für etablierte Organisationen des Engagements, aber auch für kleine Vereine bringt die digitale Kollaboration eine entscheidende Neuerung im Engagement mit sich, indem sie neue Formen der Beteiligung ermöglicht. Dabei ändern digitale Infrastrukturen und Werkzeuge nicht nur die Mittel des zivilgesellschaftlichen Engagements, sondern auch die Themen und Inhalte.
NewRadial: Revisualizing the Blake Archive
Creators: name: Saklofske, Jon
Publisher: name: HSSCommons
Year: 2022
Subjects: Digital humanities

description:
This essay reviews the attempts of the Blake Archive to come to terms with interface, but argues – implicitly – by inventing a new visualization system and theorizing its difference that opportunities for thinking are lost when archives emulate print practices in digital editions.
A feasibility study of using X-ray Thomson Scattering to diagnose the in-flight plasma conditions of DT cryogenic implosions
Creators: name: Poole, H.
name: Cao, D.
name: Epstein, R.
name: Golovkin, I.
name: Walton, T.
name: Hu, S. X.
name: Kasim, M.
name: Vinko, S. M.
name: Rygg, J. R.
name: Goncharov, V. N.
name: Gregori, G.
name: Regan, S. P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The design of inertial confinement fusion (ICF) ignition targets requires radiation-hydrodynamics simulations with accurate models of the fundamental material properties (i.e., equation of state, opacity, and conductivity). Validation of these models are required via experimentation. A feasibility study of using spatially-integrated, spectrally-resolved, X-ray Thomson scattering (XRTS) measurements to diagnose the temperature, density, and ionization of the compressed DT shell and hot spot of a laser direct-drive implosion at two-thirds convergence was conducted. Synthetic scattering spectra were generated using 1-D implosion simulations from the LILAC code that were post processed with the X-ray Scattering (XRS) model which is incorporated within SPECT3D. Analysis of two extreme adiabat capsule conditions showed that the plasma conditions for both compressed DT shells could be resolved.
description: 11 pages, 8 figures
Measuring Solar neutrino Fluxes in Direct Detection Experiments in the Presence of Light Mediators
Creators: name: Xia, Shuo-yu
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The potential of the dark matter direct detection experiments to provide independent measurements on solar neutrino fluxes in the Standard Model and in the presence of the light mediators is studied in this work. We also present the sensitivity of direct detection experiments on light mediators with solar neutrinos. We find that the sensitivities on $^8$B and pp neutrino fluxes can reach $\pm10\%$ with improved backgrounds and systematic uncertainties and they can be further pushed to $\pm3\%$ with a increased exposure. The constraints on light mediators can reach $\mathcal{O}(10^{-6})$ for the masses of scalar and vector mediators below 10 MeV. However, the presence of scalar or vector mediators could lead to shifts in the best fit value of $^8$B fluxes, which will increase the challenges in the precise measurements of solar neutrino fluxes with direct detection experiments.
description: 25 pages, 5 figures, 4 tables
Ein Vergleich unterschiedlicher Vorschläge zur Honorierung der Klimaschutzleistung der Wälder
Creators: name: Elsasser, Peter
name: Rock, Joachim
name: Rüter, Sebastian
name: Elsasser, Peter
name: Rock, Joachim
name: Rüter, Sebastian
Publisher: name: Unknown
Year: 2020
Subjects: subject: Environmental Economics and Policy
subject: Wald
subject: Ökosystemleistungen
subject: Klimaschutz
subject: Honorierung
subject: Folgenabschätzung
subject: forestry
subject: ecosystem services
subject: climate protection
subject: subsidisation
subject: impact assessment

description: Rewarding environmental services of forestry is increasingly being demanded in Germany. Recently, four different proposals have been mooted which particularly relate to the climate protection service of forests. The present Working Paper appraises and compares the possible effects of these four proposals, with regard to their possible incentive and distributional impacts; their consequences for forest enterprises, downstream markets and the existing subsidisation system in Germany; the criteria applied for securing the climate stability of forests; the administrative implications of the individual proposals; and their compatibility with rules of the international climate regime, and the evidence based carbon balance of forestry and wood utilisation.
description: DOI:10.3220/WP1598532686000
Compact object populations over cosmic time II. Compact object merger rates and masses over redshift from varying initial conditions
Creators: name: de Sá, L. M.
name: Rocha, L. S.
name: Bernardo, A.
name: Bachega, R. R. A.
name: Horvath, J. E.
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We perform a first study of the impact of varying two components of the initial conditions in binary population synthesis of compact binary mergers - the initial mass function, which is made metallicity- and star formation rate-dependent, and the orbital parameter (orbital period, mass ratio and eccentricity) distributions, which are assumed to be correlated - within a larger grid of initial condition models also including alternatives for the primary mass-dependent binary fraction and the metallicity-specific cosmic star formation history. We generate the initial populations with the sampling code BOSSA and evolve them with the rapid population synthesis code COMPAS. We find strong suggestions that the main role of initial conditions models is to set the relative weights of key features defined by the evolution models. In the two models we compare, black hole-black hole (BHBH) mergers are the most strongly affected, which we connect to a shift from the common envelope to the stable Roche lobe overflow formation channels with decreasing redshift. We also characterize variations in the black hole-neutron star (BHNS) and neutron star-neutron star (NSNS) final parameter distributions. We obtain the merger rate evolution for BHBH, BHNS and NSNS mergers up to $z=10$, and find a variation by a factor of $\sim50-60$ in the local BHBH and BHNS merger rates, suggesting a more important contribution from initial conditions than previously thought, and calling for a complete exploration of the initial conditions model permutations.
description: 28 pages, 14 figures, 3 tables. Accepted for publication in MNRAS. Code/data to be made publicly available
Inferring the Thermal History of the Intergalactic Medium from the Properties of the Hydrogen and Helium Lyman-alpha Forest
Creators: name: Villasenor, Bruno
name: Robertson, Brant
name: Madau, Piero
name: Schneider, Evan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The filamentary network of intergalactic medium (IGM) gas that gives origin to the Lyman-alpha forest in the spectra of distant quasars encodes information on the physics of structure formation and the early thermodynamics of diffuse baryonic material. Here, we use a massive suite of more than 400 high-resolution cosmological hydrodynamical simulations run with the Graphics Processing Unit-accelerated code Cholla to study the IGM at high spatial resolution maintained over the entire computational volume. The simulations capture a wide range of possible thermal histories of intergalactic gas by varying the amplitude and timing of the photoheating and photoionizing background produced by star-forming galaxies and active galactic nuclei. A statistical comparison of synthetic spectra with the observed 1D flux power spectra of hydrogen in 14 redshift bins over the full range 2.2 <= z <= 5.0 and with the Lyman-alpha opacity of helium in 5 redshift bins over the range 2.4 < z < 2.9 tightly constrains the photoionization and photoheating history of the IGM. By leveraging the constraining power of the available Lyman-alpha forest data to break model degeneracies, we find that the IGM experienced two main reheating events from the non-equilibrium ionization of hydrogen and helium over 1.2 Gyr of cosmic time. For our best-fit model, hydrogen reionization completes by z~6.0 with a first IGM temperature peak T_0 ~ 1.3x10^4 K, and is followed by the reionization of HeII that completes by z~3.0 and yields a second temperature peak of T_0 ~ 1.4x10^4 K. We discuss how our results can be used to obtain information on the timing and the sources of hydrogen and helium reionization.
description: 33 pages, 22 figures. Accepted for publication in AAS Journal. Revised version (V3)
title: Kleinstadtbahnhöfe : Anbindung, Umfeld, Funktion
title: Small towns and their railway stations
Creators: name: Weidner, Prof. Dr.-Ing. Silke
name: Krüger, Dr. Arvid
Publisher: name: BTU  Cottbus - Senftenberg
Year: 2024
Subjects: subject: 710 Städtebau, Raumplanung, Landschaftsgestaltung

description: Unter dem Dach des HochschulCampus Kleinstadtforschung (HCKF) haben auch verschiedene Lehrprojekte stattgefunden. Dieses Heft zeigt die Ergebnisse von zwei unterschiedlichen Veranstaltungen an der Brandenburgischen Technischen Universität Cottbus-Senftenberg und an der Universität Kassel. In beiden Projekten setzen sich die Studierenden mittels unterschiedlicher Methoden und Fallstudien mit den Bahnhöfen, dem Bahnhofsumfeld von Kleinstädten auseinander. Sie analysierten den Zustand, eruierten die frühere und heutige sowie mögliche zukünftige Bedeutung dieser für die Stadt und entwickelten Ideen für eine Planung mittels Zwischenschritten von Szenarien, Leitbildern, Entwürfen, Betreibermodellen, Nutzungsstudien etc. So entsteht ein reich bebildertes Heft mit zahlreichen Denkanstössen für brandenburgische und thüringische Kleinstädte und deren Umgang mit dem Bahnhof.
description: Various teaching projects have also taken place under the umbrella of the HochschulCampus Kleinstadtforschung (HCKF). This booklet presents the results of two different courses at the Brandenburg University of Technology Cottbus-Senftenberg and the University of Kassel. In both projects, students use different methods and case studies to examine railway stations (function, condition, embedding) and the station environment (connections, environment, urban design, etc.) of small towns. They analyzed the condition, determined the past, present and possible future significance of these for the town and developed ideas for planning by means of intermediate steps of scenarios, mission statements, designs, operator models, utilization studies etc. The result is a richly illustrated booklet with numerous thought-provoking ideas for small towns in Brandenburg and Thuringia and their approach to their railway station as part of the city in times of transport transition.
description: Schriftenreihe des HochschulCampus KleinstadtForschung; 9
Vermittlung und Förderung von Engagement via Plattformen
Creators: name: Haas, Claudia
Publisher: name: Zenodo
Year: 2020
Subjects: Public Interest Tech
Engagement
Zivilgesellschaft
Ehrenamt
Open Data
Civic Tech
Digitale Infrastruktur
Digitale Medien
Citizen Engagement
Citizen Participation
Collaboration
Citizen Sourcing
Open Source
Engagementplattformen
Crowdfunding
Plattformen

description: Plattformen, die speziell zur Vermittlung und Förderung von Engagement entwickelt wurden, bieten neue Möglichkeiten der Unterstützung bei gemeinnützigen Projekten. Ohne die Möglichkeiten digitaler Plattformen wären lose Netzwerke kaum vorstellbar. Das Gleiche gilt für neue, digitale Engagement-Praktiken, beispielsweise die Gewinnung von Unterstützer*innen oder Spendenaktionen für gemeinnützige Projekte, die auf Crowdfunding-Plattformen stattfinden. Spezialisierte Vermittlungsdienste bieten Organisationen die Gelegenheit, Projekte einzustellen und zu bewerben, um neue Freiwillige und Unterstützende zu finden. Die Anzahl der Plattformen, die sich auf die Förderung oder Vermittlung von Engagierten und Engagement-Organisationen spezialisiert haben, ist in den letzten Jahren immer weiter gestiegen.
Dissimilar friction welding of NiTi shape memory alloy and steel reinforcing bars for seismic performance
Creators: name: Lezaack, Matthieu B.
name: Simar, Aude
name: Marchal, Yannick
name: Steinmetz, Martin
name: Faes, Koen
name: de Almeida, João Pacheco
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Neuroscience
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: Integration of NiTi superelastic bars with steel reinforcing bars is a promising path for increasing the seismic performance of reinforced concrete structures. Welding of NiTi alloy to steel is however not straightforward with standard welding techniques. Friction welding is investigated for performing this dissimilar junction using both regular friction (forced controlled) and milling (position-controlled) machines. When adequate shortenings and forging forces are selected, the welds can withstand the tensile strength of the steel rebars. Failure actually occurs in the heat-affected zone of the steel bars. The intermetallic (IM) layer at the welded interface should be kept thin and cracks should be limited in the steel layer next to the interface in order to avoid early brittle interfacial cracking.
Preliminary characterization of a surface electrode Paul trap for frequency metrology
Creators: name: Madunic, Josipa
name: Groult, Lucas
name: Achi, Bachir
name: Lauprêtre, Thomas
name: Boudrias, Alan
name: Roset, Pierre
name: Soumann, Valérie
name: Kersalé, Yann
name: Hafiz, Moustafa Abdel
name: Lacroûte, Clément
Publisher: name: arXiv
Year: 2024
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We are developing a single-ion optical clock based on a surface-electrode (SE) trap that we will operate with $^{171}$Yb$^+$ ions on the electric quadrupole transition at 435.5 nm. We present heating rate measurements performed with a prototype SE trap. We also introduce a new, micro-fabricated SE trapping chip using silicon on insulator technology. Electric tests were performed under ultra-high vacuum using a testing chip, including breakdown voltages measurements and flashover detection. We present suitable trapping parameters for this chip, as well as a road-map for improving its design.
description: 10 pages, 6 figures
IJETTCS-2020-09-16-5.pdf
Creators: name: J, Nikhil Amala Jerrin
Publisher: name: figshare
Year: 2020
Subjects: subject: 91007 Manufacturing Robotics and Mechatronics (excl. Automotive Mechatronics)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: Artificial Intelligence and Image Processing
subject: FOS: Computer and information sciences
subject: 80102 Artificial Life
subject: 80603 Conceptual Modelling
subject: 80106 Image Processing
subject: 80306 Open Software
subject: 80308 Programming Languages
subject: 80110 Simulation and Modelling

description: Over the horizon of automation and robotics, the designing of an economically efficient robot with multiple features via an open source tool becomes immensely important and greatly valid. Though substantially demandable Computer Numerical Control (CNC) programming constituting g code and m code for controlling , starting, stopping of robots is used as a procedural instruction for 3D printing it lacks in the domain of feedback control. An open source moveo which is an open design is being stimulated . Here , It is made to perform as a powerful equipment reconnoitering multiplex actions. Initially beginning with the construction of the robotic arm, the proposed idea deals with stimulating, controlling the real robot and the interface between these two. Simulation of the robot involves the creation of URDF file of the moveo using solidworks. Controlling deals with the coupling of Arduino Mega 2560 along with a RAMPS 1.4 and the stepper motors. And finally, the main objective that is the interface between these two modules such that the real robot echoing the movements or changes made in the stimulation part is achieved with the creation of rosnode that converts the rotation into steps necessary to move the robotic arm as desired. Systamizing of objects in automation industries could be consummated by this trajectory. Keywords: Robotics, Computer Numerical Control Programming , 3D printing , ROS
title: High Tides No.25 [September, 1984]
Creators: name: (:Unkn) Unknown
Publisher: name: Electronic version published by Vancouver Island University
Year: 1984
Subjects: subject: Newspapers and periodicals

description: Denman groundwater sources / Paul Bailey -- Letters -- Federal government proposes new park -- A voice from the beach / Hillel Wright -- Seafood cocktail -- Shrimp dip -- Seafood pie -- Salmon pie -- Ratepayers -- Denman Island Garden Society's first flower show / Jo Hepburn -- Ms. Information answers your letters -- Emergency call schedule -- DIRCS data -- Neighborhood watch / Cassandra Bassett -- Construct (s / Lorraine Martinuik -- 1984 Denman Island Farmer's Market 1984 -- With appreciation for creating the peace pagoda -- Service directory -- The book shelf / Hamish Tait
Controlling Platform for Robotic Arm Using ROS
Creators: name: J, Nikhil Amala Jerrin
Publisher: name: figshare
Year: 2020
Subjects: subject: 91007 Manufacturing Robotics and Mechatronics (excl. Automotive Mechatronics)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: Artificial Intelligence and Image Processing
subject: FOS: Computer and information sciences
subject: 80102 Artificial Life
subject: 80603 Conceptual Modelling
subject: 80106 Image Processing
subject: 80306 Open Software
subject: 80308 Programming Languages
subject: 80110 Simulation and Modelling

description: Over the horizon of automation and robotics, the designing of an economically efficient robot with multiple features via an open source tool becomes immensely important and greatly valid. Though substantially demandable Computer Numerical Control (CNC) programming constituting g code and m code for controlling , starting, stopping of robots is used as a procedural instruction for 3D printing it lacks in the domain of feedback control. An open source moveo which is an open design is being stimulated . Here , It is made to perform as a powerful equipment reconnoitering multiplex actions. Initially beginning with the construction of the robotic arm, the proposed idea deals with stimulating, controlling the real robot and the interface between these two. Simulation of the robot involves the creation of URDF file of the moveo using solidworks. Controlling deals with the coupling of Arduino Mega 2560 along with a RAMPS 1.4 and the stepper motors. And finally, the main objective that is the interface between these two modules such that the real robot echoing the movements or changes made in the stimulation part is achieved with the creation of rosnode that converts the rotation into steps necessary to move the robotic arm as desired. Systamizing of objects in automation industries could be consummated by this trajectory. Keywords: Robotics, Computer Numerical Control Programming , 3D printing , ROS
Polymer collapse of a self-avoiding trail model on a two-dimensional inhomogeneous lattice
Creators: name: Bradly, C. J.
name: Owczarek, A. L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The study of the effect of random impurities on the collapse of a flexible polymer in dilute solution has had recent attention with consideration of semi-stiff interacting self-avoiding walks on the square lattice. In the absence of impurities the model displays two types of collapsed phase, one of which is both anisotropically ordered and maximally dense (crystal-like). In the presence of impurities the study showed that the crystal type phase disappears. Here we investigate extended interacting self-avoiding trails on the triangular lattice with random impurities. Without impurities this model also displays two collapsed phases, one of which is maximally dense. However, this maximally dense phase is not ordered anisotropically. The trails are simulated using the flatPERM algorithm and the inhomogeneity is realised as a random fraction of the lattice that is unavailable to the trails. We calculate several thermodynamic and metric quantities to map out the phase diagram and look at how the amount of disorder affects the properties of each phase but especially the maximally dense phase. Our results indicate that while the maximally dense phase in the trail model is affected less than in the walk model it is also disrupted and becomes a denser version of the globule phase so that the model with impurities only displays no more than one true thermodynamic collapsed phase.
description: 15 pages, 9 figures
Within the EAC, which countries stand to benefit from the implementation of the AfCFTA
Creators: name: Bulime, Enock N.W.
name: Nattabi, Aida K.
name: Shinyekwa, Isaac M.B.
name: Bulime, Enock N.W.
name: Nattabi, Aida K.
name: Shinyekwa, Isaac M.B.
Publisher: name: Unknown
Year: 2020
Subjects: subject: International Relations/Trade
subject: Continental Free Trade
subject: EAC
subject: African Continental Free Trade Area
subject: AfCFTA
subject: Regional Trade

description: The implementation of the African Continental Free Trade Area (AfCFTA) will affect EAC countries in terms of tax revenues, trade volumes and poverty. Estimates paint a mixed picture among specific EAC economies regarding the increase in demand following the reduction in tariffs, also known as trade effect. Burundi has the most considerable total trade effect of US$ 9.5 million, followed by Kenya with US$ 5.2 million and Uganda with US$ 4.2 million. On the other hand, Tanzania and Rwanda register adverse total trade effects. All the EAC countries incur tariff revenue losses; for instance, Kenya incurs US$ 14.2 million loss followed by Uganda with a US$ 13.5 million loss. Whereas Uganda and Burundi experience positive welfare effects, Kenya, Tanzania and Rwanda experience negative welfare effects. To benefit from the AfCFTA, EAC economies need to (i) increase competitiveness to mitigate the negative impact of trade diversion (ii) pursue policies that promote industrialisation and (iii) compensate for the customs revenue loss by leveraging the envisaged increase in the trade volumes and value for other taxes.
Learning via Surrogate PAC-Bayes
Creators: name: Picard-Weibel, Antoine
name: Moscoviz, Roman
name: Guedj, Benjamin
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: PAC-Bayes learning is a comprehensive setting for (i) studying the generalisation ability of learning algorithms and (ii) deriving new learning algorithms by optimising a generalisation bound. However, optimising generalisation bounds might not always be viable for tractable or computational reasons, or both. For example, iteratively querying the empirical risk might prove computationally expensive. In response, we introduce a novel principled strategy for building an iterative learning algorithm via the optimisation of a sequence of surrogate training objectives, inherited from PAC-Bayes generalisation bounds. The key argument is to replace the empirical risk (seen as a function of hypotheses) in the generalisation bound by its projection onto a constructible low dimensional functional space: these projections can be queried much more efficiently than the initial risk. On top of providing that generic recipe for learning via surrogate PAC-Bayes bounds, we (i) contribute theoretical results establishing that iteratively optimising our surrogates implies the optimisation of the original generalisation bounds, (ii) instantiate this strategy to the framework of meta-learning, introducing a meta-objective offering a closed form expression for meta-gradient, (iii) illustrate our approach with numerical experiments inspired by an industrial biochemical problem.
description: 20 pages
title: High Tides No.63 [February, 1988]
Creators: name: (:Unkn) Unknown
Publisher: name: Electronic version published by Vancouver Island University
Year: 1988
Subjects: subject: Newspapers and periodicals

description: Emergency call schedule -- Preparation for a proposal -- All I ever really needed to know I learned in kindergarten / Robert Fulghum -- Quick and easy chocolate cakes (and one carob!) to melt a true love's heart / Bryanna Clark -- Juggling act / John Crouch -- Letter to High Tides / Ianthe Grogan -- Denman Island weather observation / Ken Edmondson -- Everyone's gotta start worrying / Patrick Barnes -- Islands Trust -- Passion, New York -- On the point / Deanna Barnhardt -- Darkness light / Ave -- Hullo baby / Mother -- Beginnings of... / Kris Backs