cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Strengthening Canadian Library Publishing Community Connections
Creators: Betz, Sonya
Carlisle-Johnston, Emily
Hatherill, Jeanette
Publisher: name: University of Alberta Library
Year: 2024

Conference presentation at the Library Publishing Forum, Minneapolis, USA.

Library publishers play a vital role in the Canadian scholarly publishing landscape; more than 40 Canadian post-secondary institutions provide publishing or hosting services to over 800 scholarly and student publications that make up their communities. This publishing landscape is deeply non-commercial, multilingual and contributes to a vibrant, bibliodiverse national scholarly literature.

While journal hosting and publishing are frequent topics in local, regional, and national conversations around scholarly communications, until recently, Canada’s library publishing practitioners have had no formal community organization to engage with issues that are uniquely relevant to them, and that represents them effectively to the national scholarly communications community.

However, change is afoot! Building on the recommendations of the Library Publishing Coalition’s Canadian Community Development Working Group (CCDWG), a number of exciting new developments are underway to establish the foundations of a strong and united library publishing community in Canada. Several important national stakeholders are involved in this work, including Coalition Publica, the Canadian Association of Research Libraries (CARL), and the Canadian Research Knowledge Network.

This presentation describes the progress we’ve made, and what we hope to achieve, including establishing a library publishing Community Engagement Team in partnership with CARL, developing a bilingual documentation hub with Coalition Publica, and negotiating for better Canadian representation in the LPC.

As global efforts to foster Diamond Open Access publishing models gain traction, via projects like Coalition Publica, library publishers occupy a critical position in supporting non-commercial, scholar-led journals. We hope attendees will leave this presentation with a better understanding of how a national community might be structured and supported, and what progress can be made towards truly equitable publishing models when communities come together to work on common goals.
Finite element modeling of ultra-high-performance concrete (UHPC) beams prestressed with unbonded tendons
Creators: name: Malhas, Sami Faris
Publisher: name: No Publisher Supplied
Year: 2023

description: This study includes the use of experimental data through flexural testing to verify and validate the accuracy of the Finite Element Model used to analyze UHPC beams prestressed with unbonded tendons. A preselected UHPC design mix are cast as partially prestressed beams that were tested under two-point loading until failure. Test cylinders are cast from each batch and tested for compressive strength, splitting tensile strength, and modulus of elasticity. Mechanical properties from UHPC material testing are used, as applicable, in developing the constitutive relationships through numerical modeling for input in ABAQUS to accurately define the beam behavior. An acceptable variance of ten percent is used to determine the validity of the finite element model when comparing load-deflection curve and the ultimate load capacity of the UHPC beam obtained from experimental results. After model validation, a parametric study is conducted focusing on various parameters of the UHPC and tendon material as well as geometric properties. Results show very good correlation between model and test data for predicting the overall flexural behavior of the UHPC beams with unbonded tendons.
title: Enhancing Portability in High Performance Computing: Designing Fast Scientific Code with Longevity
Creators: name: Orender, Jason
Publisher: name: Old Dominion University Libraries
Year: 2019

description: Portability, an oftentimes sought-after goal in scientific applications, confers a number of possible advantages onto computer code. Portable code will often have greater longevity, enjoy a broader ecosystem, appeal to a wider variety of application developers, and by definition will run on more systems than its pigeonholed counterpart. These advantages come at a cost, however, and a rational approach to balancing costs and benefits requires a systemic evaluation. While the benefits for each application are likely situation-dependent, the costs in terms of resources, including but not limited to time, money, computational power, and memory requirements, are quantifiable. This document will identify strategies for enhancing performance portability on a variety of platforms available to the scientific computing community which will have little or no adverse impact on alternate architectures; this is done by implementing an iterative point solver requiring a high degree of data transfer bandwidth of a type commonly used in high performance applications used for computing a solution to partial differential equations (PDEs). In this thesis, we were able to show significant speed enhancements for architectures as diverse as complex traditional Central Processing Units (CPUs), Graphical Processing Units (GPUs), and Field Programmable Gate Arrays (FPGAs). Employing generalized optimizations on a variety of development frameworks we were able to show as much as a 92.5% reduction on a pipelined architecture (FPGA) while having a negligible impact on alternate architectures, and an 88.6% reduction in execution time on a Single Instruction Multiple Data (SIMD) architecture (GPU/CPU) while also having a negligible impact on alternate architectures. By enforcing these design rules in released versions of scientific code, the code has the potential to be optimally positioned for future advancements in computing architecture as well as being performance portable among existing architectures.
Regional Gravity Field Modeling: Theory and Practical Results
Creators: name: Denker, Heiner
Publisher: name: Berlin, Heidelberg : Springer
Year: 2013
Subjects: subject: Regional gravity field modeling
subject: physical geodesy
subject: geoid
subject: quasigeoid
subject: remove-compute-restore technique
subject: European Gravimetric Geoid 2008 (EGG2008)
subject: Regionale Schwerefeldmodellierung
subject: Physikalische Geodäsie
subject: Geoid
subject: Quasigeoid
subject: Remove-Compute-Restore-Technik
subject: Europäisches Gravimetrisches Geoid 2008 (EGG2008)
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: The article starts with a motivation, describes some fundamentals of physical geodesy and regional gravity field modelling, and finally gives some practical results related to geoid and quasigeoid computations in Europe. The final publication is available at Springer via https://doi.org/10.1007/978-3-642-28000-9_5.
Simultaneous Spin-Charge Relaxation in Double Quantum Dots
Creators: name: Srinivasa, V.
name: Nowack, K. C.
name: Shafiei, M.
name: Vandersypen, L. M. K.
name: Taylor, J. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate phonon-induced spin and charge relaxation mediated by spin-orbit and hyperfine interactions for a single electron confined within a double quantum dot. A simple toy model incorporating both direct decay to the ground state of the double dot and indirect decay via an intermediate excited state yields an electron spin relaxation rate that varies non-monotonically with the detuning between the dots. We confirm this model with experiments performed on a GaAs double dot, demonstrating that the relaxation rate exhibits the expected detuning dependence and can be electrically tuned over several orders of magnitude. Our analysis suggests that spin-orbit mediated relaxation via phonons serves as the dominant mechanism through which the double-dot electron spin-flip rate varies with detuning.
description: 5 pages, 3 figures, Supplemental Material (2 pages, 2 figures)
title: Features of the process of destruction of a coal massif during rotative drilling with a tool equipped with a solid insert
Creators: name: Korneyev, P.A.
name: Korneyev, V.A.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: The article is devoted to the study of the interaction of the tool with the rock during its drilling. The schemes of interaction of the tool with the rock during its drilling, proposed by different researchers, are given and described.
Phantom Instability of Viscous Dark Energy in Anisotropic Space-Time
Creators: name: Amirhashchi, Hassan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Phantom dark energy is a proposal that explains the current observations that mildly favor the equation of state of dark energy $ω^{de}$ crossing -1 at 68% confidence level. However, phantom fields are generally ruled out by ultraviolet quantum instabilities. To overcome this discrepancy, in this paper we propose a mechanism to show that how the presence of bulk viscosity in the cosmic fluid can temporarily drive the fluid into the phantom region ($ω
description: 13 pages, 6 figures, Astrophysics and Space Science, 2013
EVERYDAY PALESTINIAN RESISTANCE, RESILIENCE, AND RECOVERY FROM VIOLENT ISRAELI OCCUPATION
Creators: name: Ayesh, Abir
Publisher: name: Zenodo
Year: 2023
Subjects: resiliency
protective factors
collective trauma
Palestinians

description: Palestinians living under occupation experience severe traumatic stress. Although there is extensive research on how Palestinians become resilient while living under intense conflict, there is a lack of consistent findings on how Palestinians overcome experiences of post-traumatic stress symptoms. The present study explores how Palestinians comes to make sense of their trauma and recover from it. In this research, I conducted 20 in-depth interviews with Palestinians who have spent parts of their lives in occupied Palestine. An Interpretive Phenomenological Analysis (IPA) of the data suggest four main themes, including, Palestinians experience of trauma was collective, Palestinian resilience was tied to trust in others, Palestinians tended to reframe trauma in relationship to others suffering, and coped with trauma through education of others about their experiences. These findings can support therapists working with people who come from collectivist cultures by highlighting sources of resilience in this population.
Molecular Clouds Toward the Super Star Cluster NGC3603; Possible Evidence for a Cloud-Cloud Collision in Triggering the Cluster Formation
Creators: name: Fukui, Yasuo
name: Ohama, Akio
name: Hanaoka, Naoki
name: Furukawa, Naoko
name: Torii, Kazufumi
name: Dawson, Joanne R.
name: Mizuno, Norikazu
name: Hasegawa, Keisuke
name: Fukuda, Tatsuya
name: Soga, Sho
name: Moribe, Nayuta
name: Kuroda, Yutaka
name: Hayakawa, Takahiro
name: Kawamura, Akiko
name: Kuwahara, Toshihisa
name: Yamamoto, Hiroaki
name: Okuda, Takeshi
name: Onishi, Toshikazu
name: Maezawa, Hiroyuki
name: Mizuno, Akira
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present new large field observations of molecular clouds with NANTEN2 toward the super star cluster NGC3603 in the transitions 12CO(J=2-1, J=1-0) and 13CO(J=2-1, J=1-0). We suggest that two molecular clouds at 13 km s-1 and 28 km s-1 are associated with NGC3603 as evidenced by higher temperatures toward the H II region as well as morphological correspondence. The mass of the clouds is too small to gravitationally bind them, given their relative motion of ~20 km s-1. We suggest that the two clouds collided with each other a Myr ago to trigger the formation of the super star cluster. This scenario is able to explain the origin of the highest mass stellar population in the cluster which is as young as a Myr and is segregated within the central sub-pc of the cluster. This is the second super star cluster along side Westerlund2 where formation may have been triggered by a cloud-cloud collision.
description: submitted to ApJ
Probability Friends-of-Friends (PFOF) Group Finder: Performance Study and Observational Data Applications on Photometric Surveys
Creators: name: Jian, Hung-Yu
name: Lin, Lihwai
name: Chiueh, Tzihong
name: Lin, Kai-Yang
name: Liu, Hauyu Baobab
name: Merson, Alex
name: Baugh, Carlton
name: Huang, Jia-Sheng
name: Chen, Chin-Wei
name: Foucaud, Sebastien
name: Murphy, David N. A.
name: Cole, Shaun
name: Burgett, William
name: Kaiser, Nick
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: (Abridged) In tandem with observational datasets, we utilize realistic mock catalogs, based on a semi-analytic galaxy formation model, constructed specifically for Pan-STARRS1 Medium Deep Surveys in order to assess the performance of the Probability Friends-of-Friends (PFOF, Liu et al.) group finder, and aim to develop a grouping optimization method applicable to surveys like Pan-STARRS1. Producing mock PFOF group catalogs under a variety of photometric redshift accuracies (σΔz/(1+zs)), we find that catalog purities and completenesses from ``good' σΔz/(1+zs)) ~ 0.01) to ``poor' σΔz/(1+zs)) ~ 0.07) photo-zs gradually degrade respectively from 77% and 70% to 52% and 47%. To avoid model dependency of the mock for use on observational data we apply a ``subset optimization' approach, using spectroscopic-redshift group data from the target field to train the group finder for application to that field, as an alternative method for the grouping optimization. We demonstrate this approach using these spectroscopically identified groups as the training set, i.e. zCOSMOS groups for PFOF searches within PS1 Medium Deep Field04 (PS1MD04) and DEEP2 EGS groups for searches in PS1MD07. We ultimately apply PFOF to four datasets spanning the photo-z uncertainty range from 0.01 to 0.06 in order to quantify the dependence of group recovery performance on photo-z accuracy. We find purities and completenesses calculated from observational datasets broadly agree with their mock analogues. Further tests of the PFOF algorithm are performed via matches to X-ray clusters identified within the PS1MD04 and COSMOS footprints. Across over a decade in group mass, we find PFOF groups match ~85% of X-ray clusters in COSMOS and PS1MD04, but at a lower statistical significance in the latter.
description: 18 pages, 16 figures, 1 table. Submitted to ApJ
The effect of limited spatial resolution of stellar surface magnetic field maps on MHD wind and coronal X-ray emission models
Creators: name: Garraffo, C.
name: Cohen, O.
name: Drake, J. J.
name: Downs, C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study the influence of the spatial resolution on scales of $5°$ and smaller of solar surface magnetic field maps on global magnetohydrodynamic solar wind models, and on a model of coronal heating and X-ray emission. We compare the solutions driven by a low-resolution Wilcox Solar Observatory magnetic map, the same map with spatial resolution artificially increased by a refinement algorithm, and a high-resolution Solar and Heliospheric Observatory Michelson Doppler Imager map. We find that both the wind structure and the X-ray morphology are affected by the fine-scale surface magnetic structure. Moreover, the X-ray morphology is dominated by the closed loop structure between mixed polarities on smaller scales and shows significant changes between high and low resolution maps. We conclude that three-dimensional modeling of coronal X-ray emission has greater surface magnetic field spatial resolution requirements than wind modeling, and can be unreliable unless the dominant mixed polarity magnetic flux is properly resolved.
description: 26 pages, 6 figures, accepted for publication in ApJ
Antragstellung DFG Graduiertenkollegs - Welche Unterstützung ist sinnvoll?
Creators: name: Meyer, Anneke
Publisher: name: Leibniz Universität Hannover
Year: 2017
Subjects: subject: Graduiertenkollegs
subject: Deutsche Forschungsgemeinschaft
subject: DFG
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::370 | Erziehung, Schul- und Bildungswesen

description: In einem Antrag auf ein Graduiertenkolleg der Deutschen Forschungsgemeinschaft (DFG) müssen nicht nur die wissenschaftlichen, sondern auch die überfachlichen Antragsteile exzellent sein. Zugleich muss der Antrag von der Hochschulleitung unterstützt werden. Daraus resultieren für eine Forschungsreferentin, einen Forschungsreferenten eine Vielzahl von Aufgaben: Qualitätssicherung des Antrags, Einbindung des Präsidiums, Erstellen eines Zeitplans, Kontakt zur DFG etc. In dem Workshop soll es darum gehen, diese Aufgabenvielfalt zu beleuchten und sich darüber auszutauschen, welche operativen Maßnahmen für den Erfolg des Antrags besonders wichtig sind. Die Perspektive aus dem Forschungsservice soll durch die Sicht der DFG ergänzt werden. In dem Workshop referierten Dr. Anneke Meyer (Leibniz Universität Hannover), Dr. Maren Zempel-Gino (Georg-August-Universität Göttingen) und Dr. Anna Böhme (Deutsche Forschungsgemeinschaft).
Additional file 16 of Modulation of macrophage inflammatory function through selective inhibition of the epigenetic reader protein SP140
Creators: name: Ghiboub, Mohammed
name: Koster, Jan
name: Craggs, Peter D.
name: Li Yim, Andrew Y. F.
name: Shillings, Anthony
name: Hutchinson, Sue
name: Bingham, Ryan P.
name: Gatfield, Kelly
name: Hageman, Ishtu L.
name: Yao, Gang
name: O’Keefe, Heather P.
name: Coffin, Aaron
name: Patel, Amish
name: Sloan, Lisa A.
name: Mitchell, Darren J.
name: Hayhow, Thomas G.
name: Lunven, Laurent
name: Watson, Robert J.
name: Blunt, Christopher E.
name: Harrison, Lee A.
name: Bruton, Gordon
name: Kumar, Umesh
name: Hamer, Natalie
name: Spaull, John R.
name: Zwijnenburg, Danny A.
name: Welting, Olaf
name: Hakvoort, Theodorus B. M.
name: te Velde, Anje A.
name: van Limbergen, Johan
name: Henneman, Peter
name: Prinjha, Rab K.
name: de Winther, Menno P. J.
name: Harker, Nicola R.
name: Tough, David F.
name: de Jonge, Wouter J.
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 16. The discovery and the synthesis of GSK761, GSK064, GSK675 and GSK306.
Dielectric properties of PVDF based thin films and electrospun mats
Creators: name: Tretiakov, A.
name: Kapralova, V.
name: Sudar, N.
name: Gryshkov, O.
name: Glasmacher, B.
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2019
Subjects: subject: Dielectric losses
subject: Dielectric materials
subject: Fluorine compounds
subject: Thin films
subject: Electrospun mats
subject: Frequency dependence
subject: Polyvinylidene fluorides
subject: Trifluoroethylene
subject: Dielectric properties of solids
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Dielectric properties of polyvinylidene fluoride based thin films and electrospun mats have been studied. Frequency dependences of samples capacity and tangent of dielectric losses have been obtained. The influence of trifluoroethylene presence in copolymer on dielectric properties has been investigated. Efficiency of using deposited contacts instead of pressed contacts was considered. © Published under licence by IOP Publishing Ltd.
A fourth-order model for MEMS with clamped boundary conditions
Creators: name: Laurencot, Philippe
name: Walker, Christoph
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: The dynamical and stationary behaviors of a fourth-order equation in the unit ball with clamped boundary conditions and a singular reaction term are investigated. The equation arises in the modeling of microelectromechanical systems (MEMS) and includes a positive voltage parameter $λ$. It is shown that there is a threshold value $λ_*>0$ of the voltage parameter such that no radially symmetric stationary solution exists for $λ>λ_*$, while at least two such solutions exist for $λ\in (0,λ_*)$. Local and global well-posedness results are obtained for the corresponding hyperbolic and parabolic evolution problems as well as the occurrence of finite time singularities when $λ>λ_*$.
Carex vulpina L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: C. vulpina L. Cat. 364. Nach 1895 bekannt gewordene Fundorte (die Angaben beziehen sich jedoch vielleicht teilweise nicht auf C. vulpina, sondern auf die folgende Art): l: Unter Haut de Tanay, gegen 1600m (J.); Morgins (Marietan); Dorenaz (Garns). - 2: Diogne bei Montana (Coquoz). - 3: Riddes (J.); Pfyn (Garns). - 4: Niederernen (Binz); Heiligkreuz im Binntal (idem).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Galaxy rotation curves in $f(R,ϕ)$-gravity
Creators: name: Stabile, A.
name: Capozziello, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the possibility to explain theoretically the galaxy rotation curves by a gravitational potential in total absence of dark matter. To this aim an analytic fourth-order theory of gravity, nonminimally coupled with a massive scalar field is considered. Specifically, the interaction term is given by an analytic function $f(R,ϕ)$ where $R$ is the Ricci scalar and $ϕ$ is the scalar field. The gravitational potential is generated by a point-like source and compared with the so called Sanders's potential that can be exactly reproduced in this case. This result means that the problem of dark matter in spiral galaxies could be fully addressed by revising general relativity at galactic scales and requiring further gravitational degrees of freedom instead of new material components that have not been found out up to now.
description: 17 pages, 6 figures. To appear in Phys. Rev. D
On pure quasi quantum quadratic operators of M_2(C)
Creators: name: Mukhamedov, Farrukh
name: Abduganiev, Abduaziz
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: Functional Analysis (math.FA)
subject: Quantum Physics (quant-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 46L35, 46L55, 46A37

description: In the present paper we study quasi quantum quadratic operators (q.q.o) acting on the algebra of $2\times 2$ matrices $M_2(C)$. It is known that a channel is called pure if it sends pure states to pure ones. In this papers, we introduce a weaker condition, called $q$-purity, than purity of the channel. To study $q$-pure channels, we concentrate ourselves to quasi q.q.o. acting on $M_2(C)$. We describe all trace-preserving quasi q.q.o. on $M_2(C)$, which allowed us to prove that if a trace-preserving symmetric quasi q.q.o. such that the corresponding quadratic operator is linear, then its $q$-purity implies its positivity. If a symmetric quasi q.q.o. has a Haar state $τ$, then its corresponding quadratic operator is nonlinear, and it is proved that such $q$-pure symmetric quasi q.q.o. cannot be positive. We think that such a result will allow to check whether a given mapping from $M_2(C)$ to $M_2(C)øM_2(C)$ is pure or not. On the other hand, our study is related to construction of pure quantum nonlinear channels. Moreover, it is also considered that nonlinear dynamics associated with quasi pure q.q.o. may have differen kind of dynamics, i.e. it may behave chaotically or trivially, respectively.
description: 14 pages
Post-Matrix Product State Methods: To tangent space and beyond
Creators: name: Haegeman, Jutho
name: Osborne, Tobias J.
name: Verstraete, Frank
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We develop in full detail the formalism of tangent states to the manifold of matrix product states, and show how they naturally appear in studying time-evolution, excitations and spectral functions. We focus on the case of systems with translation invariance in the thermodynamic limit, where momentum is a well defined quantum number. We present some new illustrative results and discuss analogous constructions for other variational classes. We also discuss generalizations and extensions beyond the tangent space, and give a general outlook towards post matrix product methods.
description: 40 pages, 8 figures
title: Measuring and Modeling Bare Desert Wind Erosion From Steppe Grassland of Northern China as Affected By Soil Moisture and Climate
Creators: name: Potter, Nicholas Morgan
Publisher: name: Old Dominion University Libraries
Year: 2019

description: Soil erosion by wind has been found to be negatively related to soil water content, as evidenced by that for a given area, such a soil erosion can be much less in a wet than a dry year. However, few studies have examined the functional relationship between wind erosion and soil moisture, primarily due to lack of field measured data. The objectives of this study were to: 1) measure wind erosion in field using a portable wind tunnel devised and made by the author; 2) use the measured data to calibrate/validate a wind erosion model previously developed by the author; 3) model the potential effects of climate change via changes in moisture and wind speed. The study was conducted in the steppe grassland within the Balagaer river watershed located in north China. As part of a larger project funded by the National Science Foundation, this study focused on soil conditions with a minimal vegetation coverage to understand the functional relationship between wind erosion, soil moisture, and climate. These conditions are similar with those during winter and spring and/or when the grassland degrades and ultimately becomes a desert. Field samples were analyzed in a laboratory to determine the soil characteristics (e.g., moisture content, texture, hydraulic conductivity, and organic content).
title: Salmonellen-Bekämpfungsprogramm - Ergebnisse für das Jahr 2015: Stellungnahme Nr. 029/2017 des BfR vom 20. September 2017
Creators: name: Bundesinstitut Für Risikobewertung
Publisher: name: Bundesbehörden und Einrichtungen im Geschäftsbereich des Bundesministeriums für Ernährung und Landwirtschaft (BMEL)
Year: 2017
Subjects: subject: 000

description: BfR-Stellungnahmen, vol. 2017, no. 029, p. 9
Full coherent frequency conversion between two microwave propagating modes
Creators: name: Abdo, Baleegh
name: Sliwa, Katrina
name: Schackert, Flavius
name: Bergeal, Nicolas
name: Hatridge, Michael
name: Frunzio, Luigi
name: Stone, A. Douglas
name: Devoret, Michel H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We demonstrate full frequency conversion in the microwave domain using a Josephson three-wave mixing device pumped at the difference between the frequencies of its fundamental eigenmodes. By measuring the signal output as a function of the intensity and phase of the three input signal, idler and pump tones, we show that the device functions as a controllable three-wave beam-splitter/combiner for propagating microwave modes, in accordance with theory. Losses at the full conversion point are found to be less than 10^-2. Potential applications of the device include quantum information transduction and realization of an ultra-sensitive interferometer with controllable feedback.
On the problem of classifying simple compact quantum groups
Creators: name: Wang, Shuzhou
Publisher: name: arXiv
Year: 2013
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics

description: We review the notion of simple compact quantum groups and examples, and discuss the problem of construction and classification of simple compact quantum groups. Several new quantum groups constructed by Banica, Curran and Speicher since the author's first paper on simple quantum groups are shown to be simple using results of Raum and Weber.
description: 25 pages
Fannie Mae's National Housing Survey Monthly Home Purchase Sentiment Index (HPSI) and Key Indicators-November, 2022 (a subset of the complete monthly Fannie Mae National Housing Survey)
Creators: name: Foundation, Fannie Mae
Publisher: name: Roper Center for Public Opinion Research
Year: 2023

description: Economy on right/wrong track (1); personal financial situation (1); good/bad time to buy a house (1); good/bad time to sell a house (1); home price changes (3); rental price changes (3); mortgage interest rate changes (1); ability to obtain a home mortgage today (1); current homeownership status (1); renting vs. buying a home in the future (1); concern about unemployment (1); change in income (1).
Giant magnetoresistance in the variable range hopping regime
Creators: name: Ioffe, L. B.
name: Spivak, B. Z.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We predict the universal power law dependence of localization length on magnetic field in the strongly localized regime. This effect is due to the orbital quantum interference. Physically, this dependence shows up in an anomalously large negative magnetoresistance in the hopping regime. The reason for the universality is that the problem of the electron tunneling in a random media belongs to the same universality class as directed polymer problem even in the case of wave functions of random sign. We present numerical simulations which prove this conjecture. We discuss the existing experiments that show anomalously large magnetoresistance. We also discuss the role of localized spins in real materials and the spin polarizing effect of magnetic field.
description: 21 pages, 16 figures, 52 citations, pdflatex
Potential of GPS Common Clock Single-differences for Deformation Monitoring
Creators: name: Schön, Steffen
name: Pham, Hue Kiem
name: Kersten, Tobias
name: Leute, Julia
name: Bauch, Andreas
Publisher: name: Berlin : De Gruyter
Year: 2016
Subjects: subject: GPS
subject: Monitoring
subject: Clock Modeling
subject: Common Clock
subject: EMRP JRP SIB60
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::624 | Ingenieurbau und Umwelttechnik

description: Global satellite navigation systems (GNSS) are a standard measurement device for deformation monitoring. In many applications, double-differences are used to reduce distance dependent systematic effects, as well as to eliminate the receiver and satellites clock errors. However, due to the navigation principle of one way ranging used in GPS, the geometry of the subsequent adjustment is weakened. As a result, the height component is generally determined three times less precisely than the horizontal coordinates. In addition, large correlations between the height and elevation dependent effects exist such as tropospheric refraction, mismodelled phase center variations, or multipath which restricts the attainable accuracy. However, for a kinematic analysis, i. e. for estimating high rate coordinate time series, the situation can be significantly improved if a common clock is connected to different GNSS receivers in a network or on a baseline. Consequently, between-station single-differences are sufficient to solve for the baseline coordinates. The positioning geometry is significantly improved which is reflected by a reduction of the standard deviation of kinematic heights by about a factor 3 underlining the benefits of this new approach. Real data from baselines at the Physikalisch-Technische Bundesanstalt campus at Braunschweig where receivers are connected over 290 m via an optical fiber link to a common clock was analysed. © 2016 Walter de Gruyter GmbH, Berlin/Munich/Boston.
Canonical Labelling of Site Graphs
Creators: name: Oury, Nicolas
name: Pedersen, Michael
name: Petersen, Rasmus
Publisher: name: arXiv
Year: 2013
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We investigate algorithms for canonical labelling of site graphs, i.e. graphs in which edges bind vertices on sites with locally unique names. We first show that the problem of canonical labelling of site graphs reduces to the problem of canonical labelling of graphs with edge colourings. We then present two canonical labelling algorithms based on edge enumeration, and a third based on an extension of Hopcroft's partition refinement algorithm. All run in quadratic worst case time individually. However, one of the edge enumeration algorithms runs in sub-quadratic time for graphs with "many" automorphisms, and the partition refinement algorithm runs in sub-quadratic time for graphs with "few" bisimulation equivalences. This suite of algorithms was chosen based on the expectation that graphs fall in one of those two categories. If that is the case, a combined algorithm runs in sub-quadratic worst case time. Whether this expectation is reasonable remains an interesting open problem.
description: In Proceedings CompMod 2013, arXiv:1306.2019
Multiphysics simulation of melt pool in laser powder bed fusion by coupled discrete element method and computational fluid dynamics
Creators: name: Pakhale, Vinit Vikas
Publisher: name: No Publisher Supplied
Year: 2023

description: In this work, a transient three-dimensional (3D) finite volume model has been developed to investigate the transport phenomena in the melt pool during selective laser melting of SS316L powders. A coupled thermal-fluid OpenFOAM® solver with the finite volume method is proposed. The model is capable of accounting for Multiphysics phenomena such as melting and solidification, phase change of the material, phase tracking, natural and Marangoni convection flow, convective and radiation heat loss, and recoil pressure due to evaporation. To account for the reflection of the laser beam within the powder bed the Fresnel model has been incorporated. A Discrete Element Method (DEM) based software package LIGGGHTS® has been used to simulate the powder bed generation process, which is then incorporated with OpenFOAM® to study the melt pool dynamics. The evolution of temperature in the melt pool and solidification, fluid flow within the melt pool due to Marangoni convection, and recoil pressure are studied as they greatly influence the metallurgical bonding between different layers and also govern the quality of the products. It was found that the localized heating causes a very high-temperature gradient in the domain due to which the top surface of the melt pool experiences Marangoni convection which makes the molten liquid flow away from the center. The effect of natural convection on the melt pool characteristics is negligible. Also, the evaporation of powder results in a recoil pressure which pushes the molten material inwards.
title: Discovery of Selective Probes Targeting RNA Polymerase I
Creators: name: Tan, Xiao
Publisher: name: University of Kentucky Libraries
Year: 2019

description: RNR Polymerase I (RNA Pol I) is a “factory” that orchestrate the transcription of ribosomal rRNA for constructing ribosomes as a primary workshop for protein translation to sustain cell growth. Misregulation of RNA Pol I can cause uncontrolled cell proliferation, which leads to the development of cancer. Yeast (Saccharomyces cerevisiae) is a valuable model system to study RNA Pol I. Recently, the X-ray crystal structure of the yeast homologue of RNA Pol I was elucidated, offering the structural basis to selectively target this transcriptional machinery. The approach to selective RNA Pol I targeting was to disrupt the interaction between a specific transcription factor, RRN3 that bind distinct regions of RNA Pol I. For this purpose, a recombined plasmid was designed to carry human rDNA plus its promoter as target together with a selection marker gene. Therefore, this plasmid could not only introduce the target gene into the yeast (host), but also facilitate the passage of this target gene into a stable yeast strain. In this project, one uracil deficient yeast strain of YBR140C was transformed with the recombined yeast integrative plasmid of pHmrDNA-YIPlac211-TG1. This is a recombined plasmid containing not only the human rDNA but also the URA3 gene as a selection marker. PCR amplification of the human ribosomal DNA was indicative of successful integration of the human ribosomal DNA into the genome of the two yeast strains. Virtual screening using a library of 700 FDA-approved compounds was docked into the RRN3-RNA Pol I complex to identify small molecule disruptors of the RRN3-RNA Pol I as a selective strategy. Using growth assays, gel electrophoresis and transcriptional assays, we identified cerivastatin sodium as a lead virtual hit. The result implicates cerivastatin sodium as a selective RNA Pol I inhibitor worthy of further development with potential as targeted anticancer therapeutic.
description: Copyright © Xiao Tan 2019
description: Funding information: Starting Funding of Faculty at Department of Chemistry, University of Kentucky
Extended supersymmetric multiparticle Euler-Calogero-Moser model
Creators: name: Krivonos, S.
name: Lechtenfeld, O.
name: Sutulin, A.
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2019
Subjects: subject: Group theory
subject: Hamiltonian approach
subject: Superspace
subject: Supersymmetric extensions
subject: Supersymmetries
subject: Supersymmetry
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We review the construction of supersymmetric extension of the n-particle Euler-Calogero-Moser model within the Hamiltonian approach [1]. The main feature of the proposed supersymmetrization method is that it is automatically adapted for a model with an arbitrary even number of supersymmetries. It is shown that the number of fermions that must be used in this construction is 1/2N n(n+1). We demonstrate that the resulting supersymmetric system is dynamically invariant with respect to the superconformal group and give the explicit realization of its generators in terms of the conserved currents. For the simplest case of the supersymmetric n-particle Euler-Calogero-Moser model we provide its description in superspace by using the corresponding constrained superfields. © 2019 Published under licence by IOP Publishing Ltd.
Antiferromagnetic Spatial Ordering in a Quenched One-dimensional Spinor Gas
Creators: name: Vinit, A.
name: Bookjans, E. M.
name: de Melo, C. A. R. Sa
name: Raman, C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We have experimentally observed the emergence of spontaneous antiferromagnetic spatial order in a sodium spinor Bose-Einstein condensate that was quenched through a magnetic phase transition. For negative values of the quadratic Zeeman shift, a gas initially prepared in the F = 1, mF = 0 state collapsed into a dynamically evolving superposition of all 3 spin projections, mF = 0, +/-1. The quench gave rise to rich, nonequilibrium behavior where both nematic and magnetic spin waves were generated. We characterized the spatiotemporal evolution through two particle correlations between atoms in each pair of spin states. These revealed dramatic differences between the dynamics of the spin correlations and those of the spin populations.
Geodetic monitoring of subrosion-induced subsidence processes in urban areas: Concept and status report
Creators: name: Kersten, Tobias
name: Kobe, Martin
name: Gabriel, Gerald
name: Timmen, Ludger
name: Schön, Steffen
name: Vogel, Detlef
Publisher: name: Berlin : De Gruyter
Year: 2017
Subjects: subject: Co-located Geo-Monitoring
subject: Sinkhole
subject: Absolute and Relative Gravimetry
subject: GNSS
subject: Levelling
subject: Earth's Surface Deformation
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::624 | Ingenieurbau und Umwelttechnik

description: The research project SIMULTAN applies an advanced combination of geophysical, geodetic, and modelling techniques to gain a better understanding of the evolution and characteristics of sinkholes. Sinkholes are inherently related to surface deformation and, thus, of increasing societal relevance, especially in dense populated urban areas. One work package of SIMULTAN investigates an integrated approach to monitor sinkhole-related mass translations and surface deformations induced by salt dissolution. Datasets from identical and adjacent points are used for a consistent combination of geodetic and geophysical techniques. Monitoring networks are established in Hamburg and Bad Frankenhausen (Thuringia). Levelling surveys indicate subsidence rates of about 4-5 mm per year in the main subsidence areas of Bad Frankenhausen with a local maximum of 10 mm per year around the leaning church tower. Here, the concept of combining geodetic and gravimetric techniques to monitor and characterise geological processes on and below the Earth's surface is exemplary discussed for the focus area Bad Frankenhausen. For the different methods (levelling, GNSS, relative/absolute gravimetry) stable network results at identical points are obtained by the first campaigns, i.e., the results are generally in agreement. © 2017 Walter de Gruyter GmbH, Berlin/Boston 2017.
Dynamics of a Bose-Einstein Condensate of Excited Magnons
Creators: name: Vannucchi, F. S.
name: Vasconcellos, Á. R.
name: Luzzi, R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The emergence of a non-equilibrium Bose-Einstein-like condensation of magnons in rf-pumped magnetic thin films has recently been experimentally observed. We present here a complete theoretical description of the non-equilibrium processes involved. It it demonstrated that the phenomenon is another example of the presence of a Bose-Einstein-like condensation in non-equilibrium many-boson systems embedded in a thermal bath, better referred-to as Fröhlich-Bose-Einstein condensation. The complex behavior emerges after a threshold of the exciting intensity is attained. It is inhibited at higher intensities when the magnon-magnon interaction drives the magnons to internal thermalization. The observed behavior of the relaxation to equilibrium after the end of the pumping pulse is also accounted for and the different processes fully described.
description: 42 pages, 11 figures
Carex lamprophysa Samuelsson
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: C. lamprophysa Samuelsson (C. vulpina var. nemorosa Lej., C. vulp. ssp. nemorosa Schinz et Keller, C. nemorosaRebentischnonSchrank,C.OtrubaeNelmesnon Podpera,C. subvulpinaSenay) Cat. 364. Verbreitungfestzustellen. Bisher: 2: Saillon (Garns); Montorge bei Sitten (Koch). - 3: Colline de St-Jean (Val de la Forclaz) (Closuit).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
title:   Microalgae Immobilization with Filamentous Fungi
title: Process Development for Sustainable Food Systems
titleType: Subtitle
Creators: name: Talukdar, Suvro
Publisher: name: University of Kentucky Libraries
Year: 2023
Subjects: classificationCode: 2.7
subject: FOS: Environmental engineering

description: Demand for sustainable food sources has increased because of the rapid growth of the world's population.  In this study, microalgae cells of Haematococcus pluvialis were immobilized using the edible fungal strain Aspergillus awamori for potential food applications. The study investigated the impact of fungal loading, pellet geometry, and initial microalgae cell concentration on the immobilization performance and product characteristics. It was found that higher fungal loading and larger fungal pellets contributed to increased immobilization performance while increased initial microalgae concentration inhibited the process. Larger fungal pellets had decreased biomass density, which led to decreased surface concentration of immobilized microalgae but deeper penetration within the pellets. Kinetic and equilibrium models were applied to allow for process prediction and manipulation of key operational parameters allowed the product composition to be tuned to desired criteria. This study provides new insights to the fungal-assisted microalgae immobilization process and demonstrates a novel application in bioproduct customization.
description: © 2023 Suvro Talikdar
Energy stability analysis for a hybrid fluid-kinetic plasma model
Creators: name: Morrison, Philip J.
name: Tassi, Emanuele
name: Tronci, Cesare
Publisher: name: arXiv
Year: 2013
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In plasma physics, a hybrid fluid-kinetic model is composed of a magnetohydrodynamics (MHD) part that describes a bulk fluid component and a Vlasov kinetic theory part that describes an energetic plasma component. While most hybrid models in the plasma literature are non-Hamiltonian, this paper investigates a recent Hamiltonian variant in its two-dimensional configuration. The corresponding Hamiltonian structure is described along with its Casimir invariants. Then, the energy-Casimir method is used to derive explicit sufficient stability conditions, which imply a stable spectrum and suggest nonlinear stability.