cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Structure and Origin of Switchbacks: Parker Solar Probe Observations
Creators: name: Huang, Jia
name: Kasper, J. C.
name: Fisk, L. A.
name: Larson, Davin E.
name: McManus, Michael D.
name: Chen, C. H. K.
name: Martinović, Mihailo M.
name: Klein, K. G.
name: Thomas, Luke
name: Liu, Mingzhe
name: Maruca, Bennett A.
name: Zhao, Lingling
name: Chen, Yu
name: Hu, Qiang
name: Jian, Lan K.
name: Verniero, J. L.
name: Velli, Marco
name: Livi, Roberto
name: Whittlesey, P.
name: Rahmati, Ali
name: Romeo, Orlando
name: Niembro, Tatiana
name: Paulson, Kristoff
name: Stevens, M.
name: Case, A. W.
name: Pulupa, Marc
name: Bale, Stuart D.
name: Halekas, J. S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Space Physics (physics.space-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Switchbacks are rapid magnetic field reversals that last from seconds to hours. Current Parker Solar Probe (PSP) observations pose many open questions in regard to the nature of switchbacks. For example, are they stable as they propagate through the inner heliosphere, and how are they formed? In this work, we aim to investigate the structure and origin of switchbacks. In order to study the stability of switchbacks, we suppose the small-scale current sheets therein are generated by magnetic braiding, and they should work to stabilize the switchbacks. With more than one thousand switchbacks identified with PSP observations in seven encounters, we find many more current sheets inside than outside switchbacks, indicating that these microstructures should work to stabilize the S-shaped structures of switchbacks. Additionally, we study the helium variations to trace the switchbacks to their origins. We find both helium-rich and helium-poor populations in switchbacks, implying that the switchbacks could originate from both closed and open magnetic field regions in the Sun. Moreover, we observe that the alpha-proton differential speeds also show complex variations as compared to the local Alfvén speed. The joint distributions of both parameters show that low helium abundance together with low differential speed is the dominant state in switchbacks. The presence of small-scale current sheets in switchbacks along with the helium features are in line with the hypothesis that switchbacks could originate from the Sun via interchange reconnection process. However, other formation mechanisms are not excluded.
description: accepted by ApJ
Gamma rays from muons from WIMPs: Implementation of radiative muon decays for dark matter analyses
Creators: name: Scaffidi, Andre
name: Freese, Katherine
name: Li, Jinmian
name: Savage, Christopher
name: White, Martin
name: Williams, Anthony G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Dark matter searches in gamma ray final states often make use of the fact that photons can be produced from final state muons. Modern Monte Carlo generators and DM codes include the effects of final state radiation from muons produced in the dark matter annihilation process itself, but neglect the O(1%) radiative correction that arises from the subsequent muon decay. After implementing this correction we demonstrate the effect that it can have on dark matter phenomenology by considering the case of dark matter annihilation to four muons via scalar mediator production. We first show that the AMS-02 positron excess can no longer easily be made consistent with this final state once the Fermi-LAT dwarf limits are calculated with the inclusion of radiative muon decays, and we next show that the Fermi-LAT galactic centre gamma excess can be improved with this final state after inclusion of the same effect. We provide code and tables for the implementation of this effect in the popular dark matter code micrOMEGAs, providing a solution for any model producing final state muons.
description: 11 pages, 7 figures + anc files
A ferromagnetic Eu-Pt surface compound grown below hexagonal boron nitride
Creators: name: Bakhit, Alaa Mohammed Idris
name: Ali, Khadiza
name: Makarova, Anna A.
name: Píš, Igor
name: Bondino, Federica
name: Sant, Roberto
name: Dash, Saroj P.
name: Castrillo, Rodrigo
name: Hasegawa, Yuri
name: Ortega, J. Enrique
name: Fernandez, Laura
name: Schiller, Frederik
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: One of the fundamental applications for monolayer-thick 2D materials is their use as protective layers of metal surfaces and in-situ intercalated reactive materials in ambient conditions. Here we investigate the structural, electronic, and magnetic properties, as well as the chemical stability in air of a very reactive metal, Europium, after intercalation between a hexagonal boron nitride (hBN) layer and a Pt substrate. We demonstrate that Eu intercalation leads to a hBN-covered ferromagnetic EuPt$_2$ surface alloy with divalent Eu$^{2+}$ atoms at the interface. We expose the system to ambient conditions and find a partial conservation of the di-valent signal and hence the Eu-Pt interface. The use of a curved Pt substrate allows us to explore the changes in the Eu valence state and the ambient pressure protection at different substrate planes. The interfacial EuPt$_2$ surface alloy formation remains the same, but the resistance of the protecting hBN layer to ambient conditions is reduced, likely due to a rougher surface and a more discontinuous hBN coating.
Experimental evidences of the Gardner phase in a granular glass
Creators: name: Seguin, Antoine
name: Dauchot, Olivier
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Analyzing the dynamics of a vibrated bi-dimensional packing of bidisperse granular discs below jamming, we provide evidences of a Gardner phase deep into the glass phase. To do so we perform several independent compression cycles within the same glass and show that the particles select different average vibrational positions at each cycle, while the neighborhood structure remains unchanged. We compute the mean square displacement as a function of the packing fraction and compare it with the average separation between the cages obtained for different compression cycles. Our results are fully compatible with recent numerical observations obtained for a mean field model of glass as well as for hard spheres in finite dimension. We also characterize the distribution of the cage order parameters. Here we note several differences from the numerical results, which could be attributed to activated processes and cage heterogeneities.
description: 4 pages, 3 figures
title: Qualitätssicherungsstudie einer Wohngruppe für Menschen mit chronischen Essstörungen
Creators: name: Nimis, Britta
name: Kyaw Tha Tun, Eva-Marie
name: Wünsch-Leiteritz, Wally
name: Leiteritz, Andreas
name: Strack, Micha
name: Reich, Günter
name: Friedrich, Christiane
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund: Für essgestörte Patientinnen und Patienten ist bei schwerer Erkrankung sowie ungünstigem familiärem Umfeld nach stationärer Therapie eine Betreuung und Behandlung in einer Wohngruppe ein angemessenes Setting. Die Wohngruppe AmiDon in Uelzen ist für essgestörte[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 5. Wissenschaftlicher Kongress der Deutschen Gesellschaft für Essstörungen
A Principled Approach to Parallel Job Scheduling
Creators: name: Berg, Benjamin
Publisher: name: Carnegie Mellon University
Year: 2023
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences
subject: 80110 Simulation and Modelling

description: A wide range of modern computer systems process workloads composed of parallelizable jobs. Data centers, supercomputers, machine learning clusters, distributed computing frameworks, and databases all process jobs which are designed to be parallelized across multiple servers or cores. A job will receive some speedup from being parallelized across additional servers or cores, allowing the job to complete more quickly. However, jobs generally cannot be perfectly parallelized, and receive diminishing returns from being allocated additional cores. Hence, given a fixed number of cores, it is not obvious how to allocate cores across a set of jobs in order to reduce the response times of the jobs — the times from when each job arrives to the system until it is completed. While this question has been considered by the worst-case scheduling community, existing theoretical results are hampered by strong lower bounds on worst-case performance and tend to suggest policies which do not work well in practice. Meanwhile, state-of-the-art systems employ simple heuristic-based policies that leave significant room for improvement. The goal of this thesis is to develop and analyze policies for scheduling parallelizable jobs which perform well both in theory and in practice. Our approach in developing new scheduling policies for parallelizable jobs is threefold. First, we develop new stochastic models of parallelizable jobs running in a multicore system. Second, we analyze these new models using the tools of stochastic performance modeling, showing that a stochastic style of analysis emits scheduling policies which provably outperform the policies suggested by the worst-case literature. Finally, we validate our theoretical models through simulation to show that the scheduling policies we derive work well in practice. We consider the case where job sizes are completely unknown to the system, the case where job sizes are perfectly known to the system, and the case where some jobs are known to be larger than others on average. Similarly, we consider the case where all jobs are assumed to have the same level of parallelizability, the case where some jobs are more parallelizable than others, and the case where a job’s parallelizability can change over time.
Campodea (Campodea) pieltaini Silvestri 1932
Creators: name: Sendra, Alberto
name: Reboleira, Ana Sofia P. S.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Diplura
Campodeidae
Campodea
Campodea pieltaini

description: Campodea (Campodea) pieltaini Silvestri, 1932
Figs 7–8, 24
Campodea (Campodea) pieltaini Silvestri, 1932: 122, figs III–IV.
Diagnosis (Silvestri 1932a; Bareth 2006)
Body length 5.0–8.0 mm; epicuticle with multi-tip microdenticles, visible above 400 ×; middle-sized, smooth clothing setae; antennae 24–31 antennomeres; sensillum of third antennomere in dorsal position; cupuliform organ with 6–8 simple olfactory chemoreceptors; long, poorly barbed notal macrosetae almost smooth; long thin pine cone notal marginal setae; 1+1 lp macrosetae in submedial position on VI urotergite; 1+1 lp on VII urotergite, 3+3 lp on VIII urotergite and 5+5 lp on IX abdominal segment; cerci covered in long, smooth macrosetae and a few clothing setae; spermatozoid fascicles with 75–85 μm diameter and 18–20 μm thick, spiral filament with 2–2½ spirals, 350 μm long and 2 μm diameter.
Taxonomic notes
The studied material (Supplementary file 2) has allowed to photograph some structures under SEM (Figs 7–8, 24).
Habitat and distribution
Species living in humid soil, frequently abundant along the Cantabrian Mountains of the Iberian Peninsula, extending its distribution towards the Pyrenees (Condé & Mathieu 1957; Sendra & Moreno 2004).
description: Published as part of Sendra, Alberto & Reboleira, Ana Sofia P. S., 2020, Euro-Mediterranean fauna of Campodeinae (Campodeidae, Diplura), pp. 1-130 in European Journal of Taxonomy 728 on page 49, DOI: 10.5852/ejt.2020.728.1181, http://zenodo.org/record/4316883
Circuit Complexity for Carrollian Conformal (BMS) Field Theories
Creators: name: Bhattacharyya, Arpan
name: Nandi, Poulami
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We systematically explore the construction of Nielsen's circuit complexity to a non-Lorentzian field theory keeping in mind its connection with flat holography. We consider a 2d boundary field theory dual to 3d asymptotically flat spacetimes with infinite-dimensional BMS_3 as the asymptotic symmetry algebra. We compute the circuit complexity functional in two distinct ways. For the Virasoro group, the complexity functional resembles the geometric action on its co-adjoint orbit. Using the limiting approach on the relativistic results, we show that it is possible to write BMS complexity in terms of the geometric action on BMS co-adjoint orbit. However, the limiting approach fails to capture essential information about the conserved currents generating BMS supertranslations. Hence, we refine our analysis using the intrinsic approach. Here, we use only the symmetry transformations and group product laws of BMS to write the complexity functional. The refined analysis shows a richer structure than only the geometric action. Lastly, we extremize and solve the equations of motion (for a simple solution) in terms of the group paths and connect our results with available literature.
description: 29 pages, v2: references added, published version
On some electroconvection models
Creators: name: Constantin, Peter
name: Elgindi, Tarek
name: Ignatova, Mihaela
name: Vicol, Vlad
Publisher: name: arXiv
Year: 2015
Subjects: subject: Analysis of PDEs (math.AP)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We consider a model of electroconvection motivated by studies of the motion of a two dimensional annular suspended smectic film under the influence of an electric potential maintained at the boundary by two cylindrical electrodes. We prove that this electroconvection model has global in time unique smooth solutions.
Generalized holographic Ricci dark energy and generalized second law of thermodynamics in Bianchi Type I universe
Creators: name: Li, En-Kun
name: Zhang, Yu
name: Geng, Jin-Ling
name: Duan, Peng-Fei
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Generalized second law of thermodynamics in the Bianchi type I universe with the generalized holographic Ricci dark energy model is studied in this paper. The behavior of dark energy's equation of state parameter indicates that it is matter-like in the early time of the universe but phantom-like in the future. By analysing the evolution of the deviations of state parameter and the total pressure of the universe, we find that for an anisotropic Bianchi type I universe, it transits from a high anisotropy stage to a more homogeneous stage in the near past. Using the normal entropy given by Gibbs' law of thermodynamics, it is proved that the generalized second law of thermodynamics does not always satisfied throughout the history of the universe when we assume the universe is enclosed by the generalized Ricci scalar radius $R_{gr}$. It becomes invalid in the near past to the future, and the formation of the galaxies will be helpful in explaining such phenomenon, for that the galaxies's formation is an entropy increase process. The negative change rates of the horizon entropy and internal entropy occur in different period indicates that the influences of galaxies formation is wiped from internal to the universe's horizon.
description: 11 pages, 4 figures
Frequency-domain Hong-Ou-Mandel interference
Creators: name: Kobayashi, Toshiki
name: Ikuta, Rikizo
name: Yasui, Shuto
name: Miki, Shigehito
name: Yamashita, Taro
name: Terai, Hirotaka
name: Yamamoto, Takashi
name: Koashi, Masato
name: Imoto, Nobuyuki
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Hong-Ou-Mandel (HOM) interference unveils a distinct behavior of identical particles which cannot be distinguished from each other. Especially for bosons, two separated identical particles passing through a beamsplitter always go together into one of the output ports, but that is not the case with other particles including fermions or classical ones. So far many elemental properties of quantum physics and information have been discovered through the concatenated HOM effects, which has been demonstrated in photons and recently in plasmons, atoms and phonons. However, all demonstrations in optical region employed two particles in different spatial modes. Here we first report the HOM interference between two photons in a single spatial mode with different frequencies (energies) by using a partial frequency conversion. The demonstrated frequency-domain interferometer allows us to replace spatial optical paths by optical frequency multiplexing, which opens up a distinct architecture of the quantum interferometry.
description: 12 pages, 6 figures
Diagnóstico hidrológico hidráulico de la cuenca del Arroyo San Jacinto en la cabecera municipal de San Jacinto, Bolívar
Creators: name: Carrillo Severiche, Luis Fernando
name: Viana Castellar, Carlos Andres
Publisher: name: Universidad de Cartagena
Year: 2018
Subjects: Control de inundaciones
Estudio Hidrologico
Embalses
Cuenca del Arroyo San Jacinto (Bolívar) - Diagnóstico hidrológico

description: Tesis (Ingeniero Civil).--Universidad de Cartagena. Facultad de Ciencias E Ingenierías. Programa de Ingeniería Civil, 2018
description: El presente estudio tiene por objeto realizar el diagnóstico hidrológico de la cuenca del Arroyo San Jacinto y el estudio hidráulico en su paso por el casco urbano (3 Km) utilizando los datos de precipitaciones de estaciones pluviométricas cercanas y sistemas de información geográfica (SIG), para determinar las posibles zonas críticas de amenaza de inundación, y plantear alternativas de solución para mitigar estos desastres en el municipio de San Jacinto, Bolívar.
Blakea granatensis Naudin
Creators: name: Alvear, Marcela
name: Ocampo, Gilberto
name: Parra-O, Carlos
name: Almeda, Eduino Carbonó And Frank
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Myrtales
Melastomataceae
Blakea
Blakea granatensis

description: Blakea granatensis Naudin
 Type: Colombia, Linden 822 (HT: P?; IT: BR-fragm., G, MPU; photos: MO, US).
Shrub, Tree, Liana, Epiphyte, Climber. Colombia Endemic. Andes, SNSM. 1100–2500 m.
Dept.: ANT, BOY, CAU, CUN, MAG, NAR, SAN.
Distr.: Colombia.
 Voucher: Almeda 10166 (CAS, COL, UTMC)
description: Published as part of Alvear, Marcela, Ocampo, Gilberto, Parra-O, Carlos & Almeda, Eduino Carbonó And Frank, 2015, Melastomataceae of the Sierra Nevada de Santa Marta (Colombia): floristic affinities and annotated catalogue, pp. 1-30 in Phytotaxa 195 (1) on page 18, DOI: 10.11646/phytotaxa.195.1.1, http://zenodo.org/record/13641153
A cascade electronic refrigerator using superconducting tunnel junctions
Creators: name: Nguyen, H. Q.
name: Peltonen, J. T.
name: Meschke, M.
name: Pekola, J. P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Micro-refrigerators that operate in the sub-kelvin regime are a key device in quantum technology. A well-studied candidate, an electronic cooler using Normal metal - Insulator - Superconductor (NIS) tunnel junctions offers substantial performance and power. However, its superconducting electrodes are severely overheated due to exponential suppression of their thermal conductance towards low temperatures, and the cooler performs unsatisfactorily - especially in powerful devices needed for practical applications. We employ a second NIS cooling stage to thermalize the hot superconductor at the backside of the main NIS cooler. Not only providing a lower bath temperature, the second stage cooler actively evacuates quasiparticles out of the hot superconductor, especially in the low temperature limit. The NIS cooler approaches its ideal theoretical expectations without compromising cooling power. This cascade design can also be employed to manage excess heat in other cryo-electronic devices.
title: Subjektive Therapiewahrnehmung der ‚Cognitive Remediation Therapy‘ durch Jugendlichen mit Anorexia nervosa: eine qualitative Studie
Creators: name: Van Noort, Betteke Maria
name: Memering, Judith
name: Pfeiffer, Ernst
name: Lehmkuhl, Ulrike
name: Kappel, Viola
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund: Cognitive Remediation Therapy (CRT) ist eine relativ neue Zusatztherapie für Patientinnen mit Anorexia nervosa (AN). CRT zielt darauf ab kognitive Fähigkeiten zu stärken; bei AN liegt der Fokus auf Flexibilität und zentraler Kohärenz (Tchanturia et al., 2013). Es[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 5. Wissenschaftlicher Kongress der Deutschen Gesellschaft für Essstörungen
A Self-Adaptive Algorithm of the Clean Numerical Simulation (CNS) for Chaos
Creators: name: Qin, Shijie
name: Liao, Shijun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The background numerical noise $\varepsilon_{0} $ is determined by the maximum of truncation error and round-off error. For a chaotic system, the numerical error $\varepsilon(t)$ grows exponentially, say, $\varepsilon(t) = \varepsilon_{0} \exp(κ\,t)$, where $κ>0$ is the so-called noise-growing exponent. This is the reason why one can not gain a convergent simulation of chaotic systems in a long enough interval of time by means of traditional algorithms in double precision, since the background numerical noise $\varepsilon_{0}$ might stop decreasing because of the use of double precision. This restriction can be overcome by means of the clean numerical simulation (CNS), which can decrease the background numerical noise $\varepsilon_{0}$ to any required tiny level. A lot of successful applications show the novelty and validity of the CNS. In this paper, we further propose some strategies to greatly increase the computational efficiency of the CNS algorithms for chaotic dynamical systems. It is highly suggested to keep a balance between truncation error and round-off error and besides to progressively enlarge the background numerical noise $\varepsilon_{0}$, since the exponentially increasing numerical noise $\varepsilon(t)$ is much larger than it. Some examples are given to illustrate the validity of our strategies for the CNS.
description: 18 pages, 3 figures, 3 tables
Fusing defect for the N=2 super sinh-Gordon model
Creators: name: Spano, N. I.
name: Aguirre, A. R.
name: Gomes, J. F.
name: Zimerman, A. H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: In this paper we derive the type-II integrable defect for the N = 2 supersymmetric sinh-Gordon (sshG) model by using the fusing procedure. In particular, we show explicitly the conservation of the modified energy, momentum and supercharges.
description: 14 pages, Latex. Based on the talk given at the XXIII-th International Conference on Integrable Systems and Quantum symmetries (ISQS-23) in Prague, Czech Republic (June 23-27, 2015)
title: Aufstieg und Themensetzung digitaler Parteimedien
Creators: name: Gerstbach, Jonatan
Year: 2023

description: Parteieigene Medienangebote haben in den letzten Jahren stetig an Bedeutung gewonnen. Besonders in Österreich werden laufend digitale Parteimedien gegründet, ihre Reichweite steigt. In meiner Masterarbeit widme ich mich diesem jungen Phänomen und untersuche, welche thematischen Schwerpunkte die Portale setzen. Mit einer quantitativen Inhaltsanalyse beleuchte ich drei österreichische Beispiele digitaler Parteimedien. Ihre Beiträge vom November 2022 setze ich in Bezug zu Presseaussendungen ihrer Parteien (N = 570). Die Arbeit bettet die gewonnen Daten in den theoretischen Rahmen von Politischem Parallelismus und Agenda-Setting ein. Bei der Auswertung zeigen sich deutliche Unterschiede zwischen einzelnen Parteimedien. Teils ähnelt sich die Themenstruktur, manchmal nicht. Die Zitation bietet Hinweise auf einen politischen Bias. Abschließend bespreche ich mögliche Implikationen für die demokratische Öffentlichkeit und gebe einen Ausblick auf die Zukunft des Forschungsfeldes.
description: Party-owned media outlets have steadily gained in importance in recent years. Especially in Austria, new digital party media are founded, and their audience is increasing. My master's thesis is dedicated to this young phenomenon and examines the thematic focus of the portals. With a quantitative content analysis, I shed light on three Austrian examples of digital party media. I relate their content from November 2022 to press releases of their parties (N = 570). The paper embeds the obtained data in the theoretical framework of political parallelism and agenda-setting. The analysis reveals clear differences between the three party media. Sometimes the topic structure is similar, sometimes not. Citation offers evidence of political bias. Finally, I discuss possible implications for the democratic public sphere and provide an outlook for the future of the research field.
Islands of Chiral Solitons in Integer Spin Kitaev Chains
Creators: name: Sørensen, Erik S.
name: Riddell, Jonathon
name: Kee, Hae-Young
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: An intriguing chiral soliton phase has recently been identified in the $S$=1/2 Kitaev spin chain. Here we show that for $S$=1,2,3,4,5 an analogous phase can be identified, but contrary to the $S$=1/2 case the chiral soliton phases appear as islands within the sea of the polarized phase. In fact, a small field applied in a general direction will adiabatically connect the integer spin Kitaev chain to the polarized phase. Only at sizable intermediate fields along symmetry directions does the soliton phase appear centered around the special point $h^\star_x$=$h^\star_y$=$S$ where two exact product ground-states can be identified. The large $S$ limit can be understood from a semi-classical analysis, and variational calculations provide a detailed picture of the $S$=1 soliton phase. Under open boundary conditions, the chain has a single soliton in the ground-state which can be excited, leading to a proliferation of in-gap states. In contrast, even length periodic chains exhibit a gap above a twice degenerate ground-state. The presence of solitons leaves a distinct imprint on the low temperature specific heat.
description: 17 pages, 13 figures
A dichotomy law for the Diophantine properties in $β$-dynamical systems
Creators: name: Coons, Michael
name: Hussain, Mumtaz
name: Wang, Bao-Wei
Publisher: name: arXiv
Year: 2016
Subjects: subject: Number Theory (math.NT)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 11J83, 11K60, 11K16

description: Let $β>1$ be a real number and define the $β$-transformation on $[0,1]$ by $T_β:x\mapsto βx\bmod 1$. Further, define $$W_y(T_β,Ψ):=\{x\in [0, 1]:|T_β^nx-y|0}$ is a positive function such that $Ψ(n)\to 0$ as $n\to \infty$. In this paper, we show that each of the above sets obeys a Jarník-type dichotomy, that is, the generalised Hausdorff measure is either zero or full depending upon the convergence or divergence of a certain series. This work completes the metrical theory of these sets.
description: Accepted for publication in Mathematika
Transport Barrier and Spinning Blob Dynamics in the Tokamak Edge
Creators: name: Cheng, Junyi
name: Myra, James
name: Ku, Seung-Hoe
name: Hager, Robert
name: Chang, Choong-Seock
name: Parker, Scott
Publisher: name: arXiv
Year: 2023
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: In this work, we investigate the dynamics of plasma blobs in the edge of magnetic confinement devices using a full-f gyrokinetic particle-in-cell code with X-point geometry. In simulations, the evolution of a seeded blob is followed as it approaches a naturally-forming zonal shear layer near the separatrix, where the blob is stabilized by a large spin induced by the self-consistent adiabatic electron response, and blob bifurcation and trapping are observed during the cross-field propagation of blobs. A new theoretical explanation in both the zonal free and zonal shear layer is constructed, where the dominant ExB spin motion is included. A theoretical condition for a transport barrier induced by the interaction between spinning blobs and the zonal shear layer is obtained, and its scaling is verified with simulations. The new theoretical framework, especially the transport barrier, is applicable to explain and predict various experimental phenomena. In particular, the transport barrier condition calculated with experimental parameters demonstrates that the blob radial transport for H mode is smaller than L mode in experiments.
description: 6 pages, 4 figures, accepted in the journal Nucl. Fusion 63, 086015 (2023)
Geometric Metasurface Fork Gratings for Vortex Beam Generation and Manipulation
Creators: name: Chen, Shumei
name: Cai, Yuan
name: Li, Guixin
name: Zhang, Shuang
name: Cheah, Kok Wai
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In recent years, optical vortex beams possessing orbital angular momentum have caught much attention due to their potential for high capacity optical communications. This capability arises from the unbounded topological charges of orbital angular momentum (OAM) that provides infinite freedoms for encoding information. The two most common approaches for generating vortex beams are through fork diffraction gratings and spiral phase plates. While realization of conventional spiral phase plate requires complicated 3D fabrication, the emerging field of metasurfaces has provided a planar and facile solution for generating vortex beams of arbitrary orbit angular momentum. Here we realize a novel type of geometric metasurface fork grating that seamlessly combine the functionality of a metasurface phase plate for vortex beam generation, and that of a linear phase gradient metasurface for controlling the wave propagation direction. The metasurface fork grating is therefore capable of simultaneously controlling both the spin and the orbital angular momentum of light.
Un abordaje a la posible relación entre cine y filosofía (Aproximación a una filosofía del cine y a un cine al servicio de la fenomenología)
Creators: name: Jayudt Palacio, Jorge Isaac
Publisher: name: Universidad de Cartagena
Year: 2005
Subjects: Fentanyl

description: Tesis (Filósofo) -- Universidad de Cartagena. Facultad de Ciencias Humanas. Programa de Filosofía, 2005
description: En el presente ensayo, pretendo ir un poco más allá de las corrientes apreciaciones que hallamos respecto al tema en cuestión. Más allá de un cine del que se dice, no tiene nada por aportar a la reflexión ni mucho menos, ser objeto de la misma. Más allá de una filosofía que queriendo dar cuenta de la cultura, de la vida y del hombre no abre un espacio en el interés por el fenómeno del cinema, para pensarlo y porque no quizás, para reconocer en él un pensar.
title: Balance finden – Multimodale Therapie bei Jugendlichen mit Essstörungen
Creators: name: Dixius, Andrea
name: Beege, Inka
name: Möhler, Eva
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund: Die Säulen der multimodalen Therapie für Jugendliche mit Essstörungen in der Klinik für Kinder- u. Jugendpsychiatrie Idar-Oberstein berücksichtigt schulen- und fachdisziplinübergreifende Interventionen. Im Fokus steht die Arbeit mit den Modulen der Dialektisch[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 5. Wissenschaftlicher Kongress der Deutschen Gesellschaft für Essstörungen
Optimal interpolation with spatial rational Pythagorean hodograph curves
Creators: name: Schröcker, Hans-Peter
name: Šìr, Zbyněk
Publisher: name: arXiv
Year: 2023
Subjects: subject: Metric Geometry (math.MG)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65D17

description: Using a residuum approach, we provide a complete description of the space of the rational spatial curves of given tangent directions. The rational Pythagorean hodograph curves are obtained as a special case when the norm of the direction field is a perfect square. The basis for the curve space is given explicitly. Consequently a number of interpolation problems ($G^1$, $C^1$, $C^2$, $C^1/G^2$) in this space become linear, cusp avoidance can be encoded by linear inequalities, and optimization problems like minimal energy or optimal length are quadratic and can be solved efficiently via quadratic programming. We outline the interpolation/optimization strategy and demonstrate it on several examples.
Moduli spaces of sheaves on K3 surfaces
Creators: name: Sawon, Justin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14D20, 14F05, 14J28, 14J60

description: In this survey article we describe moduli spaces of simple, stable, and semistable sheaves on K3 surfaces, following the work of Mukai, O'Grady, Huybrechts, Yoshioka, and others. We also describe some recent developments, including applications to the study of Chow rings of K3 surfaces, determination of the ample and nef cones of irreducible holomorphic symplectic manifolds, and moduli spaces of Bridgeland stable complexes of sheaves.
description: 24 pages, to appear in the Journal of Geometry and Physics special issue: proceedings of the "Workshop on Instanton Counting: Moduli Spaces, Representation Theory and Integrable Systems" (Leiden, 16-20 June 2014)
Resonant Anderson localization in segmented wires
Creators: name: Estarellas, Cristian
name: Serra, Llorenç
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We discuss a model of random segmented wire, with linear segments of 2D wires joined by circular bends. The joining vertices act as scatterers on the propagating electron waves. The model leads to resonant Anderson localization when all segments are of similar length. The resonant behavior is present with one and also with several propagating modes. The probability distributions evolve from diffusive to localized regimes when increasing the number of segments in a similar way for long and short localization lengths. As a function of the energy a finite segmented wire typically evolves from localized to diffusive to ballistic behavior in each conductance plateau.
description: 7 pages, 6 figures
Un estudio del teorema de Cauchy vía topología algebraica, y un modelado a los conjuntos de Julia y de Mandelbrot con Matlabr y matematica©
Creators: name: Silva Pérez, Kevin David
Publisher: name: Universidad de Cartagena
Year: 2020
Subjects: Problema de cauchy
Análisis funcional
Análisis complejo
Modelado - procesamiento de datos
Funciones variables complejas

description: Tesis (Matemático).--Universidad de Cartagena. Facultad de Ciencias Exactas y Naturales. Programa de Matemáticas, 2020
description: En este trabajo de grado se estudian el Teorema de Cauchy-Goursat, la Formula Integral de Cauchy para derivadas de orden superior, y la versión homológica y homótopica del Teorema de Cauchy; además de reproducir los conceptos previos desde la construcción del campo complejo hasta los conceptos pertinentes para cada uno de los teoremas mencionados con anterioridad, los cuales permitan dar condiciones sobre la curva en un dominio en el cual se integra a cierta función holomorfa; y finalmente dar espacio a ciertas aplicaciones desde la variable compleja en relación a los conjuntos de Julia y de Mandelbrot haciendo uso de MATLABr y Mathematica©, bajo el estudio de algunos conceptos previos relacionados con fractales: Iteración y Sistemas Dinámicos Complejos.
3-Loop Corrections to the Heavy Flavor Wilson Coefficients in Deep-Inelastic Scattering
Creators: name: Ablinger, J.
name: Behring, A.
name: Blümlein, J.
name: De Freitas, A.
name: Hasselhuhn, A.
name: von Manteuffel, A.
name: Raab, C. G.
name: Round, M.
name: Schneider, C.
name: Wißbrock, F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A survey is given on the status of 3-loop heavy flavor corrections to deep-inelastic structure functions at large enough virtualities $Q^2$.
description: 13 pages Latex, 8 Figures, Contribution to the Proceedings of EPS 2015 Wien
Realizing value in shared compute infrastructures
Creators: name: Chung, Andrew
Publisher: name: Carnegie Mellon University
Year: 2023
Subjects: subject: Distributed Computing
subject: FOS: Computer and information sciences

description: As company operations become increasingly digitized, the demand to process data efficiently and cost-effectively has been ever-growing. More and more companies are therefore moving their workloads off of dedicated, silo-ed clusters in favor of more cost-efficient, shared data infrastructures, e.g., public and private clouds. These shared data infrastructures are often deployed on highly heterogeneous servers, are multi-tenant with server resources shared across multiple organizations, and serve widely diverse workloads ranging from batch analytics jobs to consumer-facing services with stringent service level objectives (SLOs). Both users and operators of such shared data infrastructures strive to optimize for value. Users look to complete their tasks in an efficient and timely manner without having to pay large amounts of money, while operators seek to satisfy the demands of their customers to increase adoption and lower turnover, all the while without sacrificing cluster operation costs and overhead. This dissertation presents two case studies that allows users to improve valueattainment when running their workloads in shared data infrastructures in Tributary and Stratus. Tributary is an elastic control system that embraces the uncertain nature of transient cloud resources to manage elastic long-running services with latency SLOs more robustly and more cost-effectively. Stratus is a cluster scheduler specialized for orchestrating batch job execution on virtual clusters focusing primarily on dollar cost considerations: since resources in virtual clusters are charged-for while allocated, Stratus aggressively packs tasks onto machines, guided by job run time estimates, such that allocated resources remain highly utilized. This dissertation presents two more case studies that allow cluster operators to attain value in Wing and Talon. Inter-job dependencies pervade today’s shared data infrastructures, yet are often invisible to cluster schedulers. The Wing dependency profiler analyzes job and data provenance logs to find hidden inter-job dependencies, characterizes them, and provides improved guidance to cluster schedulers and workflow managers to help users attain more value. Talon is one such workflow manager that uses information provided by Wing to load-shift batch analytics jobs to off-peak hours, thereby allowing cluster operators to save on infrastructure operation costs through reduced machines managed and usage of lower-cost, transient resources from the cloud.
Infrared [Fe II] Emission Lines from Radiative Atomic Shocks
Creators: name: Koo, Bon-Chul
name: Raymond, John C.
name: Kim, Hyun-Jeong
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: [Fe II] emission lines are prominent in the infrared (IR), and they are important diagnostic tools for radiative atomic shocks. We investigate the emission characteristics of [Fe II] lines using a shock code developed by Raymond (1979) with updated atomic parameters. We first review general characteristics of IR [Fe II] emission lines from shocked gas, and derive [Fe II] line fluxes as a function of shock speed and ambient density. We have compiled the available IR [Fe II] line observations of interstellar shocks and compare them to the ratios predicted from our model. The sample includes both young and old supernova remnants in the Galaxy and the Large Magellanic Cloud and several Herbig-Haro objects. We find that the observed ratios of IR [Fe II] lines generally fall on our grid of shock models, but the ratios of some mid-infrared lines, e.g., [Fe II] 35.35 um/[Fe II] 25.99 um, [Fe II] 5.340 um/[Fe II] 25.99 um, and [Fe II] 5.340 um/[Fe II] 17.94 um, are significantly offset from our model grid. We discuss possible explanations and conclude that the uncertainty in atomic rates might be the major source of uncertainty, while uncertainties in the shock modeling and the observations certainly exist.
description: 14 pages, 12 figures, submitted to the Journal of the Korean Astronomical Society
El Centro de Convenciones de Cartagena. Otra fuente generadoras de divisas
Creators: name: Miranda Macias, Omayra
name: Salgado Mulett, Anibal
Publisher: name: Universidad de Cartagena
Year: 1987
Subjects: Centro de Convenciones - Cartagena (Bolívar) - Desarrollo económico

description: Tesis (Economista).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Economía, 1987.
description: El presente estudio tiene por objeto determinar el dinamismo que puede tener el desarrollo turístico a través del impulso del turismo de congresos y convenciones.
Measurement of D-meson azimuthal anisotropy in Au+Au 200 GeV collisions at RHIC
Creators: name: Lomnitz, Michael R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Heavy quarks are produced through initial hard scatterings and they are affected by the hot and dense medium created in heavy-ion collisions throughout its whole evolution. Due to their heavy mass, charm quarks are expected to thermalize much more slowly than light flavor quarks. The charm quark flow is a unique tool to study the extent of thermalization of the bulk medium dominated by light quarks and gluons. At high $p_T$, D meson azimuthal anisotropy is sensitive to the path length dependence of charm quark energy loss in the medium, which offers new insights into heavy quark energy loss mechanisms - gluon radiation vs. collisional processes. We present the STAR measurement of elliptic flow ($v_2$) of $D^0$ and $D^{\pm}$ mesons in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV, for a wide transverse momentum range. These results are obtained from the data taken in the first year of physics running of the new STAR Heavy Flavor Tracker detector, which greatly improves open heavy flavor hadron measurements by the topological reconstruction of secondary decay vertices. The D meson $v_2$ is finite for $p_T > 2 \text{ GeV/c}^2$ and systematically below the measurement of light particle species at the same energy. Comparison to a series of model calculations favors scenarios where charm flows with the medium and is used to infer a range for the charm diffusion coefficient $2πT D_s$.
title: Bedeutung von Kreuzresistenz und Mehrfachresistenz bei bakteriellen Erregern für die Initialtherapie
Creators: name: Kresken, Michael
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Eine Kreuzresistenz wird meist als Unempfindlichkeit eines Bakterienstammes gegenüber zwei oder mehreren Antibiotika verstanden, die eine ähnliche chemische Struktur oder den gleichen Wirkmechanismus besitzen. In diesem Fall ist ein einziger Resistenzmechanismus die Ursache für die Unempfindlichkeit[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Bad Honnef-Symposium 2016
Using Two Types of Computer Algebra Systems to Solve Maxwell Optics Problems
Creators: name: Kulyabov, D. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Symbolic Computation (cs.SC)
subject: FOS: Computer and information sciences

description: To synthesize Maxwell optics systems, the mathematical apparatus of tensor and vector analysis is generally employed. This mathematical apparatus implies executing a great number of simple stereotyped operations, which are adequately supported by computer algebra systems. In this paper, we distinguish between two stages of working with a mathematical model: model development and model usage. Each of these stages implies its own computer algebra system. As a model problem, we consider the problem of geometrization of Maxwell's equations. Two computer algebra systems---Cadabra and FORM---are selected for use at different stages of investigation.
description: in Russian; in English
title: The human rights-based approach in smart city governance
Creators: name: Rencsik, Imola Edda
Year: 2023

description: Einer der heutigen Megatrends ist die digitale Transformation der Städte, die eine neue Herausforderung für die Durchsetzung der Menschenrechte darstellt. Ziel der Arbeit ist es aufzuzeigen, inwieweit Kommunalverwaltungen den Human Rights-Based Approach (HRBA) bei der Umsetzung von Smart-City-Programmen berücksichtigen. Die Analyse basiert auf dem von UN-Habitat entwickelten Rahmenwerk mit dem Titel: „Mainstreaming human Rights in the digital transformation“. Die Arbeit analysiert die Komplexität des strategischen Programms von Amsterdam (Niederlande), Johannesburg (Südafrika), Shanghai (Volksrepublik China), Pune (Indien) und dem Stadtstaat Singapur. Die Studie beleuchtet, welche der im UN-Habitat-Leitfaden enthaltenen Grundwerte und Mechanismen auf die Smart-City-Programme zutreffen und welche Möglichkeiten zur Durchsetzung von Grundfreiheiten, Datenschutzrechten und Gleichberechtigungsrechten bei Städten bestehen. Die Arbeit analysiert außerdem, welche Smart-City-Narrative die einzelnen Städte entwickeln und welchen Entwicklungsstand die 5 Smart-City-Governances erreicht haben, wobei davon ausgegangen wird, dass die Städte, die HRBA anwenden, das kollaborativer Smart Governance erreichen.
description: One of today's megatrends is the digital transformation of cities, which represents a new challenge for the enforcement of human rights. The purpose of the thesis is to reveal the extent to which local governments take the Human Rights-Based Approach (HRBA) into account during the realization of smart city programs. The analysis is based on the framework developed by UN-Habitat titled: "Mainstreaming human rights in the digital transformation". The thesis analyses the smart city programs of Amsterdam (Netherlands), Johannesburg (South-Africa), Shanghai (People’s Republic of China), Pune (India) and the city-state of Singapore. The study examines which of the core values and mechanisms included in the UN-Habitat guide apply in the case of the smart city programs, as well as the possibilities of enforcing fundamental freedoms, privacy rights and equality rights in the case of cities that do not apply the HRBA. The thesis also analyzes which smart city narratives the selected cities are developing along, and what level of development the 5 smart city governances have reached, assuming that the cities applying HRBA achieve the level of collaborative smart governance.