cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Anatomy of the AGN in NGC 5548: II. The Spatial, Temporal and Physical Nature of the Outflow from HST/COS Observations
Creators: name: Arav, N.
name: Chamberlain, C.
name: Kriss, G. A.
name: Kaastra, J. S.
name: Cappi, M.
name: Mehdipour, M.
name: Petrucci, P. -O.
name: Steenbrugge, K. C.
name: Behar, E.
name: Bianchi, S.
name: Boissay, R.
name: Branduardi-Raymont, G.
name: Costantini, E.
name: Ely, J. C.
name: Ebrero, J.
name: di Gesu, L.
name: Harrison, F. A.
name: Kaspi, S.
name: Malzac, J.
name: De Marco, B.
name: Matt, G.
name: Nandra, K. P.
name: Paltani, S.
name: Peterson, B. M.
name: Pinto, C.
name: Ponti, G.
name: Nuñez, F. Pozo
name: De Rosa, A.
name: Seta, H.
name: Ursini, F.
name: de Vries, C. P.
name: Walton, D. J.
name: Whewel, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: (Abridged) Our deep multiwavelength campaign on NGC 5548 revealed an unusually strong X-ray obscuration. The resulting dramatic decrease in incident ionizing flux allowed us to construct a comprehensive physical, spatial and temporal picture for the long-studied AGN wind in this object. Here we analyze the UV spectra of the outflow acquired during the campaign as well as from four previous epochs. We find that a simple model based on a fixed total column-density absorber, reacting to changes in ionizing illumination, matches the very different ionization states seen in five spectroscopic epochs spanning 16 years. Absorption troughs from C III* appeared for the first time during our campaign. From these troughs, we infer that the main outflow component is situated at 3.5+-1 pc from the central source. Three other components are situated between 5-70 pc and two are further than 100 pc. The wealth of observational constraints and the disparate relationship of the observed X-ray and UV flux between different epochs make our physical model a leading contender for interpreting trough variability data of quasar outflows.
description: Submitted to A&A, 13 pages and 7 figures, plus 27 pages of 3 appendix figures
title: Robustness Margins for Linear
Parameter Varying Systems
Creators: name: Schug, Ann-Kathrin
name: Seiler, Peter
name: Pfifer, Harald
Publisher: name: ONERA
Year: 2017
Subjects: LINEAR PARAMETER VARYING SYSTEMS
STABILITY MARGINS
FLUTTER SUPPRESSION

description: An approach for extending classical robustness margins to linear parameter varying
(LPV) systems is presented. LPV systems are often used to model aircraft
dynamics that are highly dependent on the operating conditions such as altitude and
airspeed. Classical gain and phase margins are evaluated in the frequency domain
and therefore cannot be applied to LPV systems. The proposed approach is based
on a time-domain interpretation for disk margins. Specifically, a norm bounded
linear time invariant (LTI) uncertainty is interconnected to the nominal LPV system.
Next, a time-domain worst-case metric is applied to evaluate both the robustness
margin and also the robust performance degradation. The approach does not require
detailed uncertainty modeling. In addition, the analysis can be formulated as a convex
optimization leading to reliable numerical analysis tools. As an example, the LPV gain
margin of a flutter suppression controller for a flexible aircraft is evaluated.
description: AerospaceLab Journal, Issue 13, December 2017; ISSN: 2107-6596
CVD growth of large area smooth-edged graphene nanomesh by nanosphere lithography
Creators: name: Wang, Min
name: Fu, Lei
name: Gan, Lin
name: Zhang, Chaohua
name: Rümmeli, Mark
name: Bachmatiuk, Alicja
name: Fang, Ying
name: Liu, Zhongfan
Publisher: name: London : Nature Publishing Group
Year: 2013
Subjects: subject: Electronic devices
subject: Electronic materials
subject: Electronic properties and materials
subject: Synthesis of graphene
subject: 620

description: Current etching routes to process large graphene sheets into nanoscale graphene so as to open up a bandgap tend to produce structures with rough and disordered edges. This leads to detrimental electron scattering and reduces carrier mobility. In this work, we present a novel yet simple direct-growth strategy to yield graphene nanomesh (GNM) on a patterned Cu foil via nanosphere lithography. Raman spectroscopy and TEM characterizations show that the as-grown GNM has significantly smoother edges than post-growth etched GNM. More importantly, the transistors based on as-grown GNM with neck widths of 65-75 nm have a near 3-fold higher mobility than those derived from etched GNM with the similar neck widths.
Utilização de Agregados Finos para Reconstituição Volumétrica de Azulejos Históricos a partir do Reaproveitamento de Materiais Descartados
Creators: name: João Markus de Melo Pereira
name: Thais Alessandra Bastos Caminha Sanjad
name: Franciléia Mendonça de Vasconcelos
Publisher: name: Zenodo
Year: 2024

description: A sustentabilidade no processo de conversação e restauração de azulejos históricos se soma a tantos desafios encontrados por pesquisadores e outros profissionais dessa área. Além disso, sabe-se que a construção civil ainda é um dos setores que mais gera resíduos, e por vezes o descarte desses materiais é realizado de maneira inapropriada. Uma vez considerado sem uso, esses resíduos podem ser transformados em recursos valiosos dentro da prática de conservação e restauro. Para isso, esse estudo tem o objetivo de encontrar potencial de utilização desses materiais no restauro de azulejos históricos. Através de um processo analítico e reflexivo, foram analisadas as implicações no uso em procedimentos restaurativos e as propriedades gerais de materiais descartados como cerâmicas, vidros, mármores e também, por ser um mineral abundante, a areia. Os resultados indicam que a areia é rica em sílica, e que demonstra bastante resistência a ataques químicos e físicos. Os materiais cerâmicos, por passarem pela queima, adquirem resistência significativa. O vidro possui uma dureza notável e é resistente a altas temperaturas, já o mármore pode melhorar a resistência e a durabilidade de argamassas. De modo geral, esses materiais podem fornecer características desejáveis no restauro de azulejos históricos, principalmente se forem utilizados como agregados finos e aliados a outros materiais que já são utilizados em práticas restaurativas. No entanto, é fundamental considerar a realização de outras analises tecnológicas para verificar compatibilidade, aderência e outros fatores que podem influenciar na utilização e durabilidade desses materiais. Com esse estudo, pretende-se contribuir para a adoção de práticas sustentáveis no processo de conservação e restauro de azulejos históricos, incentivando o reaproveitamento de resíduos e novas estratégias de preservação.
title: Anti-Windup Algorithms for Pilot-Induced-Oscillation Alleviation
Creators: name: Queinnec, Isabelle
name: Tarbouriech, Sophie
name: Biannic, Jean-Marc
name: Prieur, Christophe
Publisher: name: ONERA
Year: 2017
Subjects: SATURATION
ANTI-WINDUP
PILOTE-INDUCED-OSCILLATION
CONTROL

description: The paper deals with the development of anti-windup schemes and related numerical oriented tools. The objective is then to design anti-windup compensators to guarantee stability and performance for some particular classes of nonlinear actuators
presenting both magnitude and rate saturations. The lateral flying case for a civil aircraft undergoing aggressive maneuvering by the pilot is addressed. A complete methodology including theoretical conditions and associated toolbox is then proposed and compared to solutions based on anti-PIO filters.
description: AerospaceLab Journal, Issue 13, December 2017; ISSN: 2107-6596
Formation of elongated galaxies with low masses at high redshift
Creators: name: Ceverino, Daniel
name: Primack, Joel
name: Dekel, Avishai
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report the identification of elongated (triaxial or prolate) galaxies in cosmological simulations at $z\simeq2$. These are preferentially low-mass galaxies ($M_s \le 10^{9.5} \ M_\odot$), residing in dark-matter (DM) haloes with strongly elongated inner parts, a common feature of high-redshift DM haloes in the $Λ$CDM cosmology. Feedback slows formation of stars at the centres of these halos, so that a dominant and prolate DM distribution gives rise to galaxies elongated along the DM major axis. As galaxies grow in stellar mass, stars dominate the total mass within the galaxy half-mass radius, making stars and DM rounder and more oblate. A large population of elongated galaxies produces a very asymmetric distribution of projected axis ratios, as observed in high-z galaxy surveys. This indicates that the majority of the galaxies at high redshifts are not discs or spheroids but rather galaxies with elongated morphologies.
description: 7 pages, 3 figures, accepted version. Minor changes with respect to the first version
Utilização de agregados finos para reconstituição volumétrica de azulejos históricos a partir do reaproveitamento de materiais descartados
Creators: name: João Markus de Melo Pereira
name: Thais Alessandra Bastos Caminha Sanjad
name: Franciléia Mendonça de Vasconcelos
Publisher: name: Zenodo
Year: 2024

description: A sustentabilidade no processo de conversação e restauração de azulejos históricos se soma a tantos desafios encontrados por pesquisadores e outros profissionais dessa área. Além disso, sabe-se que a construção civil ainda é um dos setores que mais gera resíduos, e por vezes o descarte desses materiais é realizado de maneira inapropriada. Uma vez considerado sem uso, esses resíduos podem ser transformados em recursos valiosos dentro da prática de conservação e restauro. Para isso, esse estudo tem o objetivo de encontrar potencial de utilização desses materiais no restauro de azulejos históricos. Através de um processo analítico e reflexivo, foram analisadas as implicações no uso em procedimentos restaurativos e as propriedades gerais de materiais descartados como cerâmicas, vidros, mármores e também, por ser um mineral abundante, a areia. Os resultados indicam que a areia é rica em sílica, e que demonstra bastante resistência a ataques químicos e físicos. Os materiais cerâmicos, por passarem pela queima, adquirem resistência significativa. O vidro possui uma dureza notável e é resistente a altas temperaturas, já o mármore pode melhorar a resistência e a durabilidade de argamassas. De modo geral, esses materiais podem fornecer características desejáveis no restauro de azulejos históricos, principalmente se forem utilizados como agregados finos e aliados a outros materiais que já são utilizados em práticas restaurativas. No entanto, é fundamental considerar a realização de outras analises tecnológicas para verificar compatibilidade, aderência e outros fatores que podem influenciar na utilização e durabilidade desses materiais. Com esse estudo, pretende-se contribuir para a adoção de práticas sustentáveis no processo de conservação e restauro de azulejos históricos, incentivando o reaproveitamento de resíduos e novas estratégias de preservação.
title: Structured Control for
Future European Launchers
Creators: name: Ganet-Schoeller, Martine
name: Desmariaux, Jean
name: Combier, Clement
Publisher: name: ONERA
Year: 2017
Subjects: STRUCTURED CONTROL
NON-STATIONARY CONTROL
ROBUST CONTROL
STABILITY
PERFORMANCE
NON-SMOOTH OPTIMIZATION
AUTOMATIC TRADE-OFF

description: Control of a flexible launcher during the atmospheric flight phase is a highly
challenging control problem involving multiple and concurrent design
requirements: stability (stabilization of unstable rigid dynamics, sloshing modes
and flexible structural modes), performance (guidance tracking, structural load
minimization) and robustness (physical parameter uncertainties and accommodation
to multiple vehicle configurations) on a non-stationary system. This paper focuses on
co-funded AG/CNES research activities on the development of an advanced modular
control strategy using recent advances in structured control design. We demonstrate
here that structured H synthesis could give a gain scheduling solution to full timevarying
flexible launcher control problems during the non-stationary ascent phase,
enabling load performance improvement between complex sets of requirements,
and, design cost improvements through simplification of the tuning process. We also
present a generic framework for rapid control design that is now applicable both for
European launcher families already in activity (with existing S/W and fixed controller
structure) and for future expendable and reusable launchers.
description: AerospaceLab Journal, Issue 13, December 2017; ISSN: 2107-6596
Co-rank and Betti number of a group
Creators: name: Gelbukh, Irina
Publisher: name: arXiv
Year: 2015
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20E05, 20F34, 14F35

description: We study the maximal ranks of a free and a free abelian quotients of a finitely generated group, called co-rank (inner rank, cut number) and the Betti number, respectively. We show that any combination of these values within obvious constraints is realized for some finitely presented group, which is important for manifold and foliation topology.
description: Accepted to: Czechoslovak Mathematical Journal, 2015
Finite-strain Bloch wave propagation by the transfer matrix method
Creators: name: Hussein, M. I.
name: Khajehtourian, R.
name: Abedinnasab, M. H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The introduction of nonlinearity alters the dispersion of elastic waves in solid media. In this paper, we present an analytical formulation for the treatment of finite-strain Bloch waves in one-dimensional phononic crystals. Considering longitudinal waves, the exact dispersion relation in each homogeneous layer is first obtained and subsequently used within the transfer matrix method to derive an approximate dispersion relation for the overall periodic medium. The result is an amplitude-dependent elastic band structure that may be used to elucidate the interplay between the waveform steepening and spreading effects that emerge due to the nonlinearity and periodicity, respectively. For example, for a wave amplitude on the order of one eighth of the unit-cell size in a demonstrative structure, the two effects are practically in balance for wavelengths as small as roughly three times the unit-cell size.
title: Surrogate Assisted Computation of the Parametric Safety Margin for a Flexible Launcher
Creators: name: Kamath, Atul
name: P Menon, Prathyush
name: Ganet-Schoeller, Martine
name: Maurice, Guillaume
name: Bennani, Samir
Publisher: name: ONERA
Year: 2017
Subjects: NO KEYWORDS

description: In order to assess the robustness of dynamical systems, an approach is to demarcate the uncertain parameter space as safe set and unsafe set. Unsafe set represents the region within which the system lacks the required level of performance, or even loses its stability. However, determining the minimum distance metric for the unsafe set from the nominal operating point, the so-called parametric safety margin, for a higher dimensional dynamical system is not trivial and is often computationally demanding. In this paper, the parametric safety margin for a closed loop industrial standard launch vehicle simulator during its thrust vector control phase is computed. Imposing certain basic topological restrictions for the multi-dimensional uncertain parameter space, the computation of the parametric safety margin can be posed as a constrained nonconvex global optimization problem, and is thus extremely challenging in the case of high-fidelity aerospace simulators. Various performance requirements become the constraints in the optimization problem. An approach exploiting the use of nonintrusive polynomial surrogate modeling is proposed for the efficient computation of the parametric safety margin for the industrial standard launch vehicle simulator.
description: AerospaceLab Journal, Issue 13, December 2017; ISSN: 2107-6596
Local microstructure evolution at shear bands in metallic glasses with nanoscale phase separation
Creators: name: He, Jie
name: Kaban, Ivan
name: Mattern, Norbert
name: Song, Kaikai
name: Sun, Baoan
name: Kim, Do Hyang
name: Eckert, Jürgen
name: Greer, A.Lindsay
Publisher: name: London : Nature Publishing Group
Year: 2016
Subjects: subject: Condensed-matter physics
subject: Mechanical engineering
subject: FOS: Mechanical engineering
subject: Metals and alloys
subject: 620

description: At room temperature, plastic flow of metallic glasses (MGs) is sharply localized in shear bands, which are a key feature of the plastic deformation in MGs. Despite their clear importance and decades of study, the conditions for formation of shear bands, their structural evolution and multiplication mechanism are still under debate. In this work, we investigate the local conditions at shear bands in new phase-separated bulk MGs containing glassy nanospheres and exhibiting exceptional plasticity under compression. It is found that the glassy nanospheres within the shear band dissolve through mechanical mixing driven by the sharp strain localization there, while those nearby in the matrix coarsen by Ostwald ripening due to the increased atomic mobility. The experimental evidence demonstrates that there exists an affected zone around the shear band. This zone may arise from low-strain plastic deformation in the matrix between the bands. These results suggest that measured property changes originate not only from the shear bands themselves, but also from the affected zones in the adjacent matrix. This work sheds light on direct visualization of deformation-related effects, in particular increased atomic mobility, in the region around shear bands.
Deterritorializing gender in Sydney's breakdancing scene: a B-girl's experience of B-boying
Creators: name: Gunn, Rachael Louise
Publisher: name: Macquarie University
Year: 2022
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified

description: This thesis critically interrogates how masculinist practices of breakdancing offers a site for the transgression of gendered norms. Drawing on my own experiences as a female within the male-dominated breakdancing scene in Sydney, first as a spectator, then as an active crew member, this thesis questions why so few female participants engage in this creative space, and how breakdancing might be the space to displace and deterritorialise gender. I use analytic autoetthnography and interviews with scene members in collaboration with theoretical frameworks offered by Deleuze and Guttari, Butler, Bourdieu and other feminist and post-structuralist philosophers, to critically examine how the capacities of bodies are constituted and shaped in Sydney's breakdancing scene, and to also locate the potentiality for moments of transgression. In other words, I conceptualize the breaking body as not a 'body' constituted through regulations and assumptions, but as an assemblage open to new rhizomatic connections. Breaking is a space that embraces difference, whereby the rituals of the dance not only augment its capacity to deterritorialize the body, but also facilitate new possibilities for performativities beyond the confines of dominant modes of thought and normative gender construction. Consequently, this thesis attempts to contribute to what I perceive as a significant gap in scholarship on hip-hop, breakdancing, and autoethnographic explorations of Deleuze-Guattarian theory.
Quantum Mechanics and Perceptive Processes: a reply to Elio Conte
Creators: name: Ghirardi, GianCarlo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recently, Elio Conte has commented a paper by the present author devoted to analyze the possibility of checking experimentally whether the perceptual process can lead to the collapse of the wavefunction. Here we answer to the comments by Conte and we show that he has missed to grasp the crucial elements of our proposal. Morever, we discuss some ideas put forward by Conte concerning the occurrence of quantum superpositions of different states of consciousness and we show that they are rather vague and not cogent.
description: 7 pages, 1 figure, to appear on International Journal of Theoretical Physics
title: An annotated bibliography on residential chimneys serving solid- or liquid-fuel fired heating appliances
Creators: name: Wachmann, C.
Publisher: name: National Research Council of Canada. Division Of Building Research
Year: 1957
Subjects: subject: Heating
valueUri: urn:ircsubjects:IRC0630
subject: Chauffage
valueUri: urn:ircsubjects:IRC0630

description: This annotated bibliography has been compiled as part of a research program into the performance of residential chimneys carried out at the Division of Building Research. It includes references to the important papers and articles published in the technical literature in the U.S.A. and Canada, and deals only with chimneys which serve solid- and liquid-fuel fired heating appliances. It does not include references on chimneys serving gas fired heating appliances or installations in high buildings.
title: Imaginierte Kolonien im Treptower Park. Koloniale Ikonen auf Bildpostkarten zur Ersten Deutschen Kolonialausstellung 1896
Creators: name: Jankowski, Daniel
Publisher: name: ZZF - Leibniz-Zentrum für Zeithistorische Forschung: Visual History
Year: 2025
Subjects: subject: 943 Geschichte Mitteleuropas; Deutschlands

description: Im Rahmen der Ersten Deutschen Kolonialausstellung 1896 sollten rund zwei Millionen Besucher:innen sowohl durch die Kulissen im Treptower Park als auch durch Abbildungen auf Werbemedien von der „kolonialen Sache“ überzeugt werden. Wie jedoch versuchte die Kunstanstalt, die in ihrer Rolle als Werbepartner den Zielen des Veranstalters verpflichtet war, für die „koloniale Sache“ und gleichzeitig für einen Besuch der Veranstaltung zu werben?
Auswahl und Zusammenstellung der einzelnen Motive waren die entscheidenden Faktoren. Sie hoben die Unterscheidungen zwischen der Repräsentation kolonialer Imaginationen und der Realität der Kolonialausstellung auf, indem die Kolonien über die Sujets der Bildpostkarten direkt in den Treptower Park versetzt wurden. Die Postkarten bildeten nicht nur die kunstvoll ausgestalteten Kulissen der Ausstellung ab, sie erschufen ein imaginiertes Idealbild der deutschen Kolonien. Die in der Ausstellung lediglich abstrakt zu greifende Veranschaulichung der Kolonialgebiete wurde in den Abbildungen zu einer scheinbar authentischen und geschlossenen Lebenswelt aufgewertet. Der vorliegende Text zeigt diese Verbildlichung eines „idealen“ Kolonialreichs am Beispiel einer Postkarte, auf der indigene Kulturgüter und -praktiken dargestellt und mit der „zivilisatorischen Mission“ an die Besucher:innen verknüpft wurden, weitere Kolonialgebiete zu erobern.
title: Stability Analysis of a Set of Uncertain Large-Scale Dynamical Models with Saturations
Creators: name: Vuillemin, Pierre
name: Demourant, Fabrice
name: Poussot-Vassal, Charles
Publisher: name: ONERA
Year: 2017
Subjects: MODEL APPROXIMATION
MODEL INTERPOLATION
INTEGRAL QUADRATIC CONSTRAINTS
AEROELASTIC AIRCRAFT STABILITY

description: From a sparse set of large-scale Linear Time Invariant (LTI) dynamical models, a methodology to generate a low-order parameter-dependent and uncertain model, with guaranteed bounds on the approximation error is firstly obtained using advanced approximation and interpolation techniques. Secondly, the stability of the aforementioned model, represented as a Linear Fractional Representation (LFR) and subject to actuator saturation and dynamical uncertainties, is addressed through the use of an irrational multiplier-based Integral Quadratic Constraint (IQC) approach. The effectiveness of the approach is assessed on a complex set of aeroservoelastic aircraft models used in an industrial framework for control design and validation purposes.
description: AerospaceLab Journal, Issue 13, December 2017; ISSN: 2107-6596
Improving Object Detection using Enhanced EfficientNet Architecture
Creators: name: Ibrahim, Michael Youssef Kamel
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: classificationCode: 400899
subject: Electrical engineering not elsewhere classified
classificationCode: 400204
subject: Automotive safety engineering
classificationCode: 400203
subject: Automotive mechatronics and autonomous systems

description: EfficientNet is designed to achieve top accuracy while utilizing fewer parameters, in addition to less computational resources compared to previous models.
 In this paper, we are presenting compound scaling method that re-weight the network's width (w), depth (d), and resolution (r), which leads to better performance than traditional methods that scale only one or two of these dimensions by adjusting the hyperparameters of the model. Additionally, we are presenting an enhanced EfficientNet Backbone architecture.
 We show that EfficientNet achieves top accuracy on the ImageNet dataset, while being up to 8.4x smaller and up to 6.1x faster than previous top performing models. The effectiveness demonstrated in EfficientNet on transfer learning and object detection tasks, where it achieves higher accuracy with fewer parameters and less computation. Henceforward, the proposed enhanced architecture will be discussed in detail and compared to the original architecture.
 Our approach provides a scalable and efficient solution for both academic research and practical applications, where resource constraints are often a limiting factor.
The kiloparsec-scale star formation law at redshift 4: wide-spread, highly efficient star formation in the dust-obscured starburst galaxy GN20
Creators: name: Hodge, J. A.
name: Riechers, D.
name: Decarli, R.
name: Walter, F.
name: Carilli, C. L.
name: Daddi, E.
name: Dannerbauer, H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present high-resolution observations of the 880 $μ$m (rest-frame FIR) continuum emission in the z$=$4.05 submillimeter galaxy GN20 from the IRAM Plateau de Bure Interferometer (PdBI). These data resolve the obscured star formation in this unlensed galaxy on scales of 0.3$^{\prime\prime}$$\times$0.2$^{\prime\prime}$ ($\sim$2.1$\times$1.3 kpc). The observations reveal a bright (16$\pm$1 mJy) dusty starburst centered on the cold molecular gas reservoir and showing a bar-like extension along the major axis. The striking anti-correlation with the HST/WFC3 imaging suggests that the copious dust surrounding the starburst heavily obscures the rest-frame UV/optical emission. A comparison with 1.2 mm PdBI continuum data reveals no evidence for variations in the dust properties across the source within the uncertainties, consistent with extended star formation, and the peak star formation rate surface density (119$\pm$8 M$_{\odot}$ yr$^{-1}$ kpc$^{-2}$) implies that the star formation in GN20 remains sub-Eddington on scales down to 3 kpc$^2$. We find that the star formation efficiency is highest in the central regions of GN20, leading to a resolved star formation law with a power law slope of $Σ_{\rm SFR}$ $\sim$ $Σ_{\rm H_2}^{\rm 2.1\pm1.0}$, and that GN20 lies above the sequence of normal star-forming disks, implying that the dispersion in the star formation law is not due solely to morphology or choice of conversion factor. These data extend previous evidence for a fixed star formation efficiency per free-fall time to include the star-forming medium on $\sim$kpc-scales in a galaxy 12 Gyr ago.
description: 6 pages, 5 figures, accepted to ApJL
title: Aeroelasticity and Structural Dynamics
Creators: name: Liauzun, Cedric
name: Piet-Lahanier, Nicolas
Publisher: name: ONERA
Year: 2018
Subjects: AERONAUTICS
AEROELASTICITY
STRUTURE DYNAMICS
VIBRATIONS

description: AerospaceLab Journal, Issue 14, September 2018; ISSN: 2107-6596
description: The fourteenth issue of AerospaceLab Journal is dedicated to aeroelasticity and structural dynamics. Aeroelasticity can be briefly defined as the study of the low frequency dynamic behavior of a structure aircraft, turbomachine, helicopter rotor, etc.) in an aerodynamic flow. It focuses on the interactions between, on the one hand, the static or vibrational deformations of the structure and, on the other hand, the modifications or fluctuations of the aerodynamic flow field.
Aeroelastic phenomena have a strong influence on stability and therefore on the
integrity of aeronautical structures, as well as on their performance and durability.
In the current context, in which a reduction of the footprint of aeronautics on the
environment is sought, in particular by reducing the mass and fuel consumption of
aircraft, aeroelasticity problems must be taken into account as early as possible in
the design of such structures, whether they are conventional or innovative concepts.
It is therefore necessary to develop increasingly efficient and accurate numerical and
experimental methods and tools, allowing additional complex physical phenomena
to be taken into account. On the other hand, the development of larger and lighter
aeronautical structures entails the need to determine the dynamic characteristics of such
highly flexible structures, taking into account their possibly non-linear behavior (large
displacements, for example), and optimizing them by, for example, taking advantage
of the particular properties of new materials (in particular, composite materials).
This issue of AerospaceLab Journal presents the current situation regarding numerical
calculation and simulation methods specific to aeroelasticity and structural dynamics
for several applications: fan damping computation and flutter prediction, static and
dynamic aeroelasticity of aircraft and gust response. Moreover, articles present
results on smart morphing structures for airplanes. Other papers present the latest
progress in terms of structure design and critical load assessment. Finally, articles
present recent results relating to structural damping modelling and the non-linear
behavior of structural assemblies, to the development of structure optimization
algorithms taking into account uncertainties, to the development of vibration control
devices and to the crashworthiness of aeronautical composite structures.
title: A Comprehensive Load Process at the DLR  Definition, Analysis, and Experimental Evaluation
Creators: name: Kruger, Wolf
name: Ciampa, Pier Davide
name: Geier, Martin
name: Kier, Thiemo
name: Klimmek, Thomas
name: Kohlgruber, Dieter
name: Ohme, Per
name: Risse, Kristof
name: Schwinn, Julian
Publisher: name: ONERA
Year: 2018
Subjects: AEROELASTICITY
FLIGHT LOADS
LOAD PROCESS
FATIGUE TESTING
FLIGHT TESTING
STRUCTURAL DESIGN

description: AerospaceLab Journal, Issue 14, September 2018; ISSN: 2107-6596
description: The determination of loads acting on the aircraft is one of the main tasks during aircraft development. The knowledge of loads is important for aircraft design, e.g., for the sizing of the airframe structure, as well as for certification. The definition of realistic load assumptions is important, as well as the generation of loads from simulation and experiment. The DLR is involved in a large number of aircraft design
activities, and operates a fleet of research aircraft; thus, the DLR requires in-depth
expertise for the definition and the determination of relevant and crucial load cases.
The aim of the iLOADS project is the development of an internal DLR load process,
comprising expertise from various DLR institutes. The goal of the process is to
strengthen the assessment capabilities of the DLR with respect to the influence of
loads on new aircraft configurations, and to support certification capabilities for
the DLR aircraft fleet. The load process is investigated with regard to the influence
of various analysis approaches on aircraft structural design, and it is subject to
verification and validation on different aircraft configurations.
The paper will give an overview of the background of the iLOADS project, as well as
of the work performed in the project. The definition of the load process, as well as the
implementations for different applications investigated in the project, will be presented
in more detail.
Hierarchical hollow Fe2O3@MIL-101(Fe)/C derived from metal-organic frameworks for superior sodium storage
Creators: name: Li, Chengping
name: Hu, Qian
name: Li, Yan
name: Zhou, Hang
name: Lv, Zhaolin
name: Yang, Xiangjun
name: Liu, Lixiang
name: Guo, Hong
Publisher: name: London : Nature Publishing Group
Year: 2016
Subjects: subject: Batteries
subject: Synthesis and processing
subject: 620

description: A facile generic template-free strategy is employed to prepare hierarchical hollow hybrid Fe2O3@MIL-101(Fe)/C materials derived from metal-organic frameworks as anode materials for Na-ion batteries. The intrinsic hollow nanostructure can shorten the lengths for both electronic and ionic transport, enlarge the surface areas of electrodes, and improve accommodation of the volume change during Na+ insertion/extraction cycling. Therefore, The stable reversible capacity of Fe2O3@MIL-101(Fe)/C electrode is 710 mAhg−1, and can be retained at 662 mAhg−1 after 200 cycles with the retention of 93.2%. Especially, its overall rate performance data confirm again the importance of the hierarchical hollow structures and multi-elements characteristics toward high capacities in both low and high current rates. This general strategy may shed light on a new avenue for fast synthesis of hierarchic hollow functional materials for energy storage, catalyst, sensor and other new applications.
OBJECT DETECTION USING VISION TRANSFORMED EFFICIENTDET
Creators: name: Kar, Shreyanil
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: classificationCode: 460304
subject: Computer vision

description: This research presents a novel approach for object detection by integrating Vision Transformers (ViT) into the EfficientDet architecture. The field of computer vision, encompassing artificial intelligence, focuses on the interpretation and analysis of visual data. Recent advancements in deep learning, particularly convolutional neural networks (CNNs), have significantly improved the accuracy and efficiency of computer vision systems. Object detection, a widely studied application within computer vision, involves the identification and localization of objects in images. The ViT backbone, renowned for its success in image classification and natural language processing tasks, employs self-attention mechanisms to capture global dependencies in input images. However, ViT’s capability to capture fine-grained details and context information is limited. To address this limitation, the integration of ViT into the EfficientDet architecture is proposed. EfficientDet is recognized for its efficiency and accuracy in object detection. By combining the strengths of ViT and EfficientDet, the proposed integration enhances the network’s ability to capture fine-grained details and context information. It leverages ViT’s global dependency modeling alongside EfficientDet’s efficient object detection framework, resulting in highly accurate and efficient performance. Noteworthy object detection frameworks utilized in the industry, such as RetinaNet, EfficientNet, and EfficientDet, primarily employ convolution. Experimental evaluations were conducted using the PASCAL VOC 2007 and 2012 datasets, widely acknowledged benchmarks for object detection. The integrated ViT-EfficientDet model achieved an impressive mean Average Precision (mAP) score of 86.27% when tested on the PASCAL VOC 2007 dataset, demonstrating its superior accuracy. These results underscore the potential of the proposed integration for real-world applications. In conclusion, the research introduces a novel integration of Vision Transformers into the EfficientDet architecture, yielding significant improvements in object detection performance. By combining ViT’s ability to capture global dependencies with EfficientDet’s efficiency and accuracy, the proposed approach offers enhanced object detection capabilities. Future research directions may explore additional datasets and evaluate the performance of the proposed framework across various computer vision tasks.
1,1-Bis(di­phenyl­phosphor­yl)hydrazine
Creators: name: Höhne, Martha
name: Aluri, Bhaskar R.
name: Spannenberg, Anke
name: Müller, Bernd H.
name: Peulecke, Normen
name: Rosenthal, Uwe
Publisher: name: Chester : International Union of Crystallography
Year: 2018
Subjects: subject: Crystal structure
subject: diphosphazane
subject: hydrazine
subject: 540

description: The title compound, C24H22N2O2P2, contains a diphosphazane backbone, as well as a hydrazine entity. The P—N—P diphosphazane unit and the N-amine N atom are almost coplanar, and the O atoms of the Ph2P(O) units are oriented trans to each other with respect to the P...P axis. In the crystal, centrosymmetrically related mol­ecules are linked into dimers by pairs of N—H...O hydrogen bonds, forming rings of graph-set motif R22(10).
Assessment of risk from exposure to aflatoxins resulting from consumption of maize-based and dry and dried fruit-based products
Creators: name: National Committee For Food Safety
Publisher: name: Zenodo
Year: 2020
Subjects: subject: Italy
subject: Opinion
subject: mycotoxins
subject: aflatoxins
subject: maize meal
subject: nuts
subject: dried fruit
subject: http://id.agrisemantics.org/gacs/C2333
subject: http://id.agrisemantics.org/gacs/C4836
subject: http://id.agrisemantics.org/gacs/C18636
subject: http://id.agrisemantics.org/gacs/C4274
subject: http://id.agrisemantics.org/gacs/C17481

description: Italian National Committee for Food Safety (CNSA) opinion of 23 MARCH 2020 on Assessment of risk from exposure to aflatoxins resulting from consumption of maize-based and dry and dried fruit-based products Mycotoxins are important food contaminants of fungoid origin. Among mycotoxins, aflatoxins represent the most relevant class, both for their intrinsic toxicity and their presence in food products, national as well as imported: it is likely that their presence is augmenting as a result of climate change. The main aflatoxin, aflatoxin B1, classified by IARC as carcinogenic to humans (group 1), can be significantly present in dry and dried fruit and maize-based products. The Food Safety Section of CNSA has analysed the national situation, based on contamination incidence data from 2016-2018 official controls and on the available consumption data, and has found that the estimated exposure levels, as regards the presence of aflatoxins B1 in samples of maize-based and dry and dried fruit-based products, deserve adequate attention, particularly with respect to children and adolescents. Therefore, the Food Safety Section recommends continuing and strengthening aflatoxin prevention and control activities throughout the food chain and providing useful information to consumers in order to minimize the exposure to aflatoxins during household food preparation.
description: IT; it; pdf; o.pinto@sanita.it
CERTAIN ASPECTS OF QUANTUM AND CLASSICAL INTEGRABLE SYSTEMS
Creators: name: Kosmakov, Maksim
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: classificationCode: 490202
subject: Integrable systems (classical and quantum)

description: We derive new combinatorail formulas for vector-valued weight functions for the evolution modules over the Yangians Y (gln). We obtain them using the Nested Algebraic Bethe ansatz method. We also describe the asymptotic behavior of the radial solutions of the negative tt∗ equation via the Riemann-Hilbert problem and the Deift-Zhou nonlinear steepest descent method.
Concurrent codes: A holographic-type encoding robust against noise and loss
Creators: name: Benton, David M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Concurrent coding is an encoding scheme with "holographic" type properties that are shown here to be robust against a significant amount of noise and signal loss. This single encoding scheme is able to correct for random errors and burst errors simultaneously, but does not rely on cyclic codes. A simple and practical scheme has been tested that displays perfect decoding when the signal to noise ratio is of order -18dB. The same scheme also displays perfect reconstruction when a contiguous block of 40% of the transmission is missing. In addition this scheme is 50% more efficient in terms of transmitted power requirements than equivalent cyclic codes. A simple model is presented that describes the process of decoding and can determine the computational load that would be expected, as well as describing the critical levels of noise and missing data at which false messages begin to be generated.
GAMIFICATION'S IMPACT ON LEARNING OUTCOMES AND LEADERSHIP IN POST-GRADUATE ENTREPRENEURSHIP: A MIXED METHODS STUDY
Creators: name: Hendarsyah Aditya Saptari
name: Jann Hidajat Tjakraatmadja
name: Donald Crestofel Lantu
Publisher: name: Zenodo
Year: 2024
Subjects: Gamification, Learning Outcomes, Leadership Skills, Engagement, Self-Concordance, Post-Graduate Students.

description: Abstract

This mixed-method study explores the impact of gamification on learning outcomes and leadership skills among post-graduate entrepreneurship students, considering different learning styles. Through observations, interviews with nine participants, and four structured questionnaires, the research found that gamification enhances learning by making it more engaging, collaborative, and practical, fostering leadership skills. The quantitative analysis confirmed the reliability and validity of the constructs and showed significant direct effects of gamification on learner engagement and motivation. While the moderating effect of gamification on sensory indicators and self-conformity was not significant, its direct impact on self-conformity highlighted its role in increasing engagement. The study underscores the importance of self-concordance in improving academic performance, self-efficacy, and creativity, facilitated through gamification and personalized learning approaches. Despite limitations, the study provides valuable insights into gamification's effectiveness. Future research should explore its impact in varied educational settings, use larger samples, investigate specific gamification elements, employ objective measures, conduct longitudinal studies, and examine psychological and motivational factors mediating the relationship between gamification and self-concordance.
Graphene growth on Ge(100)/Si(100) substrates by CVD method
Creators: name: Pasternak, Iwona
name: Wesolowski, Marek
name: Jozwik, Iwona
name: Lukosius, Mindaugas
name: Lupina, Grzegorz
name: Dabrowski, Pawel
name: Baranowski, Jacek M.
name: Strupinski, Wlodek
Publisher: name: London : Nature Publishing Group
Year: 2016
Subjects: subject: Synthesis of graphene
subject: 620

description: The successful integration of graphene into microelectronic devices is strongly dependent on the availability of direct deposition processes, which can provide uniform, large area and high quality graphene on nonmetallic substrates. As of today the dominant technology is based on Si and obtaining graphene with Si is treated as the most advantageous solution. However, the formation of carbide during the growth process makes manufacturing graphene on Si wafers extremely challenging. To overcome these difficulties and reach the set goals, we proposed growth of high quality graphene layers by the CVD method on Ge(100)/Si(100) wafers. In addition, a stochastic model was applied in order to describe the graphene growth process on the Ge(100)/Si(100) substrate and to determine the direction of further processes. As a result, high quality graphene was grown, which was proved by Raman spectroscopy results, showing uniform monolayer films with FWHM of the 2D band of 32 cm−1.
Direct visualization of flow-induced conformational transitions of single actin filaments in entangled solutions
Creators: name: Kirchenbuechler, Inka
name: Guu, Donald
name: Kurniawan, Nicholas A.
name: Koenderink, Gijsje H.
name: Lettinga, M. Paul
Publisher: name: arXiv
Year: 2015
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: While semi-flexible polymers and fibers are an important class of material due to their rich mechanical properties, it remains unclear how these properties relate to the microscopic conformation of the polymers. Actin filaments constitute an ideal model polymer system due to their micron-sized length and relatively high stiffness that allow imaging at the single filament level. Here we study the effect of entanglements on the conformational dynamics of actin filaments in shear flow. We directly measure the full three-dimensional conformation of single actin filaments, using confocal microscopy in combination with a counter-rotating cone-plate shear cell. We show that initially entangled filaments form disentangled orientationally ordered hairpins, confined in the flow-vorticity plane. In addition, shear flow causes stretching and shear alignment of the hairpin tails, while the filament length distribution remains unchanged. These observations explain the strain-softening and shear-thinning behavior of entangled F-actin solutions, which aids the understanding of the flow behavior of complex fluids containing semi-flexible polymers.
description: supplementary material; see Journal reference
Classification of Stellar Orbits in Axisymmetric Galaxies
Creators: name: Li, Baile
name: Holley-Bockelmann, Kelly
name: Khan, Fazeel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: It is known that two supermassive black holes (SMBHs) cannot merge in a spherical galaxy within a Hubble time; an emerging picture is that galaxy geometry, rotation, and large potential perturbations may usher the SMBH binary through the critical three-body scattering phase and ultimately drive the SMBH to coalesce. We explore the orbital content within an N-body model of a mildly- flattened, non-rotating, SMBH-embedded elliptical galaxy. When used as the foundation for a study on the SMBH binary coalescence, the black holes bypassed the binary stalling often seen within spherical galaxies and merged on Gyr timescales (Khan et al. 2013). Using both frequency-mapping and angular momentum criteria, we identify a wealth of resonant orbits in the axisymmetric model, including saucers, that are absent from an otherwise identical spherical system and that can potentially interact with the binary. We quantified the set of orbits that could be scattered by the SMBH binary, and found that the axisymmetric model contained nearly seven times the number of these potential loss cone orbits compared to our equivalent spherical model. In this flattened model, the mass of these orbits is roughly 3 times of that of the SMBH, which is consistent with what the SMBH binary needs to scatter to transition into the gravitational wave regime.
description: 7 pages, 9 figures and 1 table. Submitted to ApJ. Comments welcome