cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Drycothaea jolyi Galileo & Martins, 2010, sp. nov.
Creators: name: Galileo, Maria Helena M.
name: Martins, Ubirajara R.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Drycothaea
Drycothaea jolyi

description: Drycothaea jolyi sp. nov.
 (Fig. 1)
 Etimologia: O epíteto é uma homenagem ao colega Luis José Joly (MIZA) que nos enviou para estudo os Calliini da sua coleção.
Tegumento preto. Cabeça revestida por pubescência amarelada. Fronte esparsamente pontuada. Lobos oculares inferiores muito desenvolvidos com cerca do quádruplo do comprimento das genas. Lobos oculares superiores tão distantes entre si quanto o dobro da largura de um lobo. Vértice com uma fileira de pontos a cada lado de uma linha central desnuda. Escapo com pubescência amarelada muito esparsa. Antenômeros III e IV unicolores; V-XI com anel basal de pubescência acinzentada.
Protórax com espinho lateral desenvolvido com o ápice voltado para trás. Partes laterais do protórax com alguns pontos junto à margem anterior. Pronoto com pubescência densa amarelada; pontos grandes moderadamente densos. Lados do metasterno sem pontos, lisos. Escutelo com pubescência amarelada, não contrastantes com a dos élitros nessa região.
Élitros com dois tipos de pubescência: amarelada e densa no dorso e esbranquiçada na declividade lateral. Pontuação elitral abundante no terço basal. Extremidades elitrais arredondadas.
Face ventral do corpo castanho-avermelhado.
 Dimensões em mm: Comprimento total, 12,4; comprimento do protórax, 2,2; maior largura do protórax, 3,2; comprimento do élitro, 9,1; largura umeral, 3,9.
 Material-tipo: Holótipo macho, PERU, Huanuco: Tingo Maria (Divisoria, 1.700 m), 18.V.1972, Bordón col. (MIZA).
 Discussão: D. jolyi sp. nov. apresenta os élitros com pubescência amarelada e esbranquiçada também encontrada em D. bicolorata Martins & Galileo, 1990. Distingue-se pelos antenômeros III e IV unicolores e V-XI com a base amarelo-esbranquiçada; pelos espinhos desenvolvidos nos lados do protórax; pelos lados do metasterno liso; pelo dorso dos élitros cobertos de pubescência amarelada longa e nos lados e na borda apical com pubescência esbranquiçada. Em D. bicolorata o antenômero III é unicolor e IV-XI têm anel basal amarelado; o espinho lateral do protórax é curto; os lados do metasterno apresentam alguns pontos profundos e a pubescência elitral amarelada é curta, restrita ao dorso dos dois terços anteriores e o restante da superfície é esbranquiçada.
description: Published as part of Galileo, Maria Helena M. & Martins, Ubirajara R., 2010, Gênero Drycothaea (Coleoptera, Cerambycidae, Lamiinae): Chave Para Espécies, Nova Combinação, Espécies Novas, pp. 69-75 in Papéis Avulsos de Zoologia 50 (5) on page 70, DOI: 10.1590/S0031-10492010000500001, http://zenodo.org/record/13286976
Consensus from group interactions: An adaptive voter model on hypergraphs
Creators: name: Papanikolaou, Nikos
name: Vaccario, Giacomo
name: Hormann, Erik
name: Lambiotte, Renaud
name: Schweitzer, Frank
Publisher: name: arXiv
Year: 2022
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Multiagent Systems (cs.MA)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We study the effect of group interactions on the emergence of consensus in a spin system. Agents with discrete opinions $\{0,1\}$ form groups. They can change their opinion based on their group's influence (voter dynamics), but groups can also split and merge (adaptation). In a hypergraph, these groups are represented by hyperedges of different sizes. The heterogeneity of group sizes is controlled by a parameter $β$. To study the impact of $β$ on reaching consensus, we provide extensive computer simulations and compare them with an analytic approach for the dynamics of the average magnetization. We find that group interactions amplify small initial opinion biases, accelerate the formation of consensus and lead to a drift of the average magnetization. The conservation of the initial magnetization, known for basic voter models, is no longer obtained.
Grabaciones de entrevista
Creators: name: Macusi Manizari, Antonia
name: Fabiano, Emanuele
name: Homan, Joshua
name: Nuribe Arahuata, Manuel
name: Nuribe Arahuata, Samuel
name: O'Hagan, Zachary
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: ura

description: 1 archivo WAV, 1 archivo MOV.
All-charm tetraquark in front form dynamics
Creators: name: Kuang, Zhongkui
name: Serafin, Kamil
name: Zhao, Xingbo
name: Vary, James P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study all-charm tetraquarks in the front form of Hamiltonian dynamics using the many-body basis function approach known as basis light-front quantization. The model Hamiltonian contains transverse and longitudinal confining potentials and a one-gluon-exchange effective potential. We calculate masses of two-charm-two-anticharm states focusing on the lowest state. We also calculate two-quark and four-quark estimates of meson-meson breakup threshold. The results suggest that the lowest two-charm-two-anticharm state is not a tightly bound tetraquark. We discuss implications of the cluster decomposition principle for theories formulated on the light front and present our treatment of identical particles together with color-singlet restrictions on the space of quantum states.
description: 35 pages, 2 figures
Profiles of Select Collectors of Biodiversity in the Cayman Islands and Montserrat
Creators: name: Groom, Quentin
name: Meeus, Sofie
Publisher: name: Zenodo
Year: 2024
Subjects: biographies
collectors
caribbean
Montserrat
Cayman Islands

description: Appendix to a journal article under submission entitled: "Capacity building needed to reap the benefits of access to biodiversity collections". The pdf in this record contains short biographies of several deceased collectors that collected biological specimens from the Cayman Islands and Montserrat in the Caribbean.
Grabaciones de entrevista
Creators: name: Macusi Nuribe, Mercedes
name: Fabiano, Emanuele
name: Homan, Joshua
name: Nuribe Arahuata, Manuel
name: Nuribe Arahuata, Samuel
name: O'Hagan, Zachary
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: ura

description: 1 archivo WAV, 1 archivo MOV.
title: Wie kann ein Friedhof islamisch sein?
Creators: name: Hakim, Negar
name: Bader, Bernardo
Publisher: name: Medecco Holding
Year: 2023
Subjects: Islamische Friedhof
Architektur
Integrationspolitik

description: Wieso gerade im 21. Jahrhundert im Westen Österreichs ein islamischer Friedhof gebaut wird und ob bzw. wie weit Architektur eine integrative Gesellschaft formen, sowie die Integrationspolitik beeinflussen kann, erklärt der Architekt Bernardo Bader in einem Interview mit der Redakteurin von Kunst und Kirche Negar Hakim.
Drycothaea rotundicollis Galileo & Martins, 2010, sp. nov.
Creators: name: Galileo, Maria Helena M.
name: Martins, Ubirajara R.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Drycothaea
Drycothaea rotundicollis

description: Drycothaea rotundicollis sp. nov.
 (Fig. 2)
 Etimologia: Latim, rotundus = redondo; collum = pescoço; alusivo aos lados do protórax com espinho apenas indicado.
Cabeça com tegumento avermelhado coberto por pubescência amarelada. Fronte com pontuação muito esparsa. Lobos oculares superiores mais distantes entre si do que o dobro da largura de um lobo. Vértice com alguns pontos profundos. Escapo com tegumento avermelhado, revestido por pubescência amarelada e esparsamente pontuado; pontos contrastantes. Flagelômeros avermelhados com as bases aneladas de pubescência amarelada.
Protórax com tegumento avermelhado; tubérculo lateral apenas indicado. Pronoto com pontuação moderada e contrastante. Parte lateral do protórax com alguns pontos junto à base. Prosterno liso. Lados do metasterno com pontos profundos.
Escutelo com pubescência amarelada nas bordas. Élitros com tegumento avermelhado e manchas irregulares de tegumento acastanhado, espalhadas em toda a superfície. Dorso dos élitros, desde o terço anterior até o quinto apical, com fileiras de pontos próximas da sutura. No meio dos élitros com linhas careniformes entre as fileiras de pontos. Extremidades elitrais arredondadas.
Face ventral avermelhada revestida por pubescência amarelada. Fêmures com pontos contrastantes. Urosternitos pontuados nos lados.
 Dimensões em mm: Comprimento total, 7,5; comprimento do protórax, 1,5; maior largura do protórax, 1,9; comprimento do élitro, 5,3; largura umeral, 2,3.
 Material-tipo: Holótipo macho, COSTA RICA, Cartago: Turrialba (800 m), F. Neverman col. (MIZA).
 Discussão: Drycothaea rotundicollis sp. nov. é semelhante às espécies mexicanas e centro-americanas que têm manchas pretas, dispersas, nos élitros e distingue-se de todas por apresentar o protórax apenas projetado nos lados. Nas outras espécies, o protórax tem espinho lateral.
description: Published as part of Galileo, Maria Helena M. & Martins, Ubirajara R., 2010, Gênero Drycothaea (Coleoptera, Cerambycidae, Lamiinae): Chave Para Espécies, Nova Combinação, Espécies Novas, pp. 69-75 in Papéis Avulsos de Zoologia 50 (5) on pages 70-71, DOI: 10.1590/S0031-10492010000500001, http://zenodo.org/record/13286976
Galaxy Zoo: Clump Scout: Surveying the Local Universe for Giant Star-forming Clumps
Creators: name: Adams, Dominic
name: Mehta, Vihang
name: Dickinson, Hugh
name: Scarlata, Claudia
name: Fortson, Lucy
name: Kruk, Sandor
name: Simmons, Brooke
name: Lintott, Chris
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Massive, star-forming clumps are a common feature of high-redshift star-forming galaxies. How they formed, and why they are so rare at low redshift, remains unclear. In this paper we identify the largest yet sample of clumpy galaxies (7,052) at low redshift using data from the citizen science project \textit{Galaxy Zoo: Clump Scout}, in which volunteers classified over 58,000 Sloan Digital Sky Survey (SDSS) galaxies spanning redshift $0.02 < z < 0.15$. We apply a robust completeness correction by comparing with simulated clumps identified by the same method. Requiring that the ratio of clump-to-galaxy flux in the SDSS $u$ band be greater than 8\% (similar to clump definitions used by other works), we estimate the fraction of local galaxies hosting at least one clump ($f_{clumpy}$) to be $2.68_{-0.30}^{+0.33}\%$. We also compute the same fraction with a less stringent cut of 3\% ($11.33_{-1.16}^{+0.89}\%$), as the higher number count and lower statistical noise of this fraction permits sharper comparison with future low-redshift clumpy galaxy studies. Our results reveal a sharp decline in $f_{clumpy}$ over $0 < z < 0.5$. The minor merger rate remains roughly constant over the same span, so we suggest that minor mergers are unlikely to be the primary driver of clump formation. Instead, the rate of galaxy turbulence is a better tracer for $f_{clumpy}$ over $0 < z < 1.5$ for galaxies of all masses, which supports the idea that clump formation is primarily driven by violent disk instability for all galaxy populations during this period.
description: 23 pages, 13 figures, 4 tables, submitted to ApJ
X-ray emission associated with radiative recombination for Pb$^{82+}$ ions at threshold energies
Creators: name: Zhu, B.
name: Gumberidze, A.
name: Over, T.
name: Weber, G.
name: Andelkovic, Z.
name: Bräuning-Demian, A.
name: Chen, R.
name: Dmytriiev, D.
name: Forstner, O.
name: Hahn, C.
name: Herfurth, F.
name: Herdrich, M. O.
name: Hillenbrand, P. -M.
name: Kalinin, A.
name: Kröger, F. M.
name: Lestinsky, M.
name: Litvinov, Y. A.
name: Menz, E. B.
name: Middents, W.
name: Morgenroth, T.
name: Petridis, N.
name: Pfäfflein, Ph.
name: Sanjari, M. S.
name: Sidhu, R. S.
name: Spillmann, U.
name: Schuch, R.
name: Schippers, S.
name: Trotsenko, S.
name: Varga, L.
name: Vorobyev, G.
name: Stöhlker, Th.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: For bare lead ions, decelerated to the low beam energy of 10 MeV/u, the x-ray emission associated with radiative recombination (RR) at "cold collision" conditions has been studied at the electron cooler of CRYRING@ESR at GSI-Darmstadt. Utilizing dedicated x-ray detection chambers installed at 0° and 180° observation geometry, we observed for the very first time for stored ions the full x-ray emission spectrum associated with RR under electron cooling conditions. Most remarkably, no line distortion effects due to delayed emission are present in the well resolved spectra, spanning over a wide range of x-ray energies (from about 5 to 100 keV) which enable to identify fine-structure resolved Lyman, Balmer as well as Paschen x-ray lines along with the RR transitions into the K-, L and M-shell of the ions. To compare with theory, an elaborate theoretical model has been applied. By considering the relativistic atomic structure of Pb$^{81+}$, this model is based on a sophisticated computation of the initial population distribution via RR for all atomic levels up to Rydberg states with principal quantum number $n=$ 165 in combination with cascade calculations based on time-dependent rate equations. Within the statistical accuracy, the experimental x-ray line emission is in very good agreement with the results of the theoretical model applied. Most notably, this comparison sheds light on the contribution of prompt and delayed X-ray emission (up to 70 ns) to the observed X-ray spectra, originating in particular from Yrast transitions into inner shells.
Two-loop non-planar hexa-box integrals with one massive leg
Creators: name: Kardos, Adam
name: Papadopoulos, Costas G.
name: Smirnov, Alexander V.
name: Syrrakos, Nikolaos
name: Wever, Christopher
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Based on the Simplified Differential Equations approach, we present results for the two-loop non-planar hexa-box families of master integrals. We introduce a new approach to obtain the boundary terms and establish a one-dimensional integral representation of the master integrals in terms of Generalised Polylogarithms, when the alphabet contains non-factorisable square roots. The results are relevant to the study of NNLO QCD corrections for $W,Z$ and Higgs-boson production in association with two hadronic jets.
description: Ancillary files attached. Mathematica notebook files updated. Accepted for publication in JHEP
Spitzer Publication Statistics
Creators: name: Scire, Elena
name: Rebull, Luisa
name: Laine, Seppo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present statistics on the number of refereed astronomy journal articles that used data from NASA's Spitzer Space Telescope through the end of the calendar year 2020. We discuss the various types of science programs and science categories that were used to collect data during the mission and discuss how operational changes brought on by the depletion of cryogen in May 2009, including the resulting budget cuts, impacted the publication rate. The post-cryogenic (warm) mission produced fewer papers than the cryogenic mission, but the percentage of the exposure time published did not appreciably change between the warm and cryogenic missions. This was mostly because in the warm mission the length of observations increased, so that each warm paper on average uses more data than the cryogenic papers. We also discuss the speed of publication, archival usage, and the tremendous efficacy of the Legacy and Exploration Science programs (large, coherent investigations), including the value of having well-advertised enhanced data products hosted in centralized archives. We also identify the observations that have been published the largest number of times, and sort them by a variety of metrics (including program type, instrument used, and observation length). Data that have the highest reuse rates in publications were taken early in the Spitzer mission, or belong to one of the large surveys (large either in number of objects, in number of hours observed, or in area covered on the sky). We also assess how often authors have cited the Spitzer fundamental papers or have correctly referenced the Spitzer data they used, finding that as many as 40% of papers have failed to cite the papers, and 15% have made it impossible to identify the data they used.
description: Accepted by PASP
Classifying basins of attraction using the basin entropy
Creators: name: Daza, Alvar
name: Wagemakers, Alexandre
name: Sanjuán, Miguel A. F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: A basin of attraction represents the set of initial conditions leading to a specific asymptotic state of a given dynamical system. Here, we provide a classification of the most common basins found in nonlinear dynamics with the help of the basin entropy. We have also found interesting connections between the basin entropy and other measures used to characterize the unpredictability associated to the basins of attraction, such as the uncertainty exponent, the lacunarity or other different parameters related to the Wada property.
Dr Yacine Baziz, Nouvelle approche des notices biographiques arabes le cas d’Ibn Hazm
Creators: name: Baziz, Yacine
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 470501
subject: African literature
classificationCode: 470507
subject: Comparative and transnational literature
classificationCode: 470514
subject: Literary theory

description: Dr Yacine Baziz, Nouvelle approche des notices biographiques arabes le cas d’Ibn Hazm
title: Abdiullatif al Fozan Award
Creators: name: Hakim, Negar
Publisher: name: TU Wien
Year: 2024
Subjects: Moscheenbau
Alfozan
Wettbewerb

description: Gemäß den Daten des Pew Research Centers (www.pewresearch.org) wird die globale muslimische Bevölkerung bis zum Jahr 2050 voraussichtlich auf 2,76 Milliarden Menschen anwachsen. Das entspricht einem Anteil von 29,7 Prozent der Weltbevölkerung. Basierend auf einer Studie aus dem Jahr 2021 gibt es derzeit weltweit etwa 3,6 Millionen Moscheen, und diese Zahl soll bis 2050 auf 4,5 Millionen steigen. Mit der stetigen städtischen Expansion und der wachsenden Komplexität des Lebens entstehen dabei auch entsprechend vielfältige Herausforderungen im Bereich der islamischen Sakralbauten. Als Reaktion darauf wurde 2011 der Abdullatif Al Fozan Award (www.alfozanaward.org) für die Moschee-Architektur in Saudi-Arabien ins Leben gerufen, um die Entwicklung zeitgenössischer und zukünftiger islamischer Sakralarchitektur zu fördern.
Three-dimensional Sandglass Magnet with Non-Kramers ions
Creators: name: Yang, Yan-Xing
name: Wang, Yao
name: Ding, Zhao-Feng
name: Hillier, Adrian D.
name: Shu, Lei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Magnetic susceptibility, specific heat, and muon spin relaxation ($μ$SR) measurements have been performed on a newly synthesized three-dimensional sandglass-type lattice Tm$_3$SbO$_7$, where two inequivalent sets of non-Kramers Tm$^{3+}$ ions (Tm$^{3+}_1$ and Tm$^{3+}_2)$ show crystal electrical field effect at different temperature ranges. The existence of an ordered or a glassy state down to 0.1~K in zero field is excluded. The low-energy properties of Tm$_3$SbO$_7$ are dominated by the lowest non-Kramers quasi-doublet of $\rm Tm^{3+}_1$, and the energy splitting is regarded as an intrinsic transverse field. Therefore, the low-temperature paramagnetic phenomenon in Tm$_3$SbO$_7$ is explained by a transverse field Ising model, which is supported by the quantitative simulation of specific heat data. In addition, the perturbation from Tm$^{3+}_2$ may play an important role in accounting for the low temperature spin dynamics behavior observed by $μ$SR.
Coupled-channels calculations for nuclear reactions: from exotic nuclei to superheavy elements
Creators: name: Hagino, K.
name: Ogata, K.
name: Moro, A. M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Atomic nuclei are composite systems, and they may be dynamically excited during nuclear reactions. Such excitations are not only relevant to inelastic scattering but they also affect other reaction processes such as elastic scattering and fusion. The coupled-channels approach is a framework which can describe these reaction processes in a unified manner. It expands the total wave function of the system in terms of the ground and excited states of the colliding nuclei, and solves the coupled Shrödinger equations to obtain the $S$-matrix, from which several cross sections can be constructed. This approach has been a standard tool to analyze experimental data for nuclear reactions. In this paper, we review the present status and the recent developments of the coupled-channels approach. This includes the microscopic coupled-channels method and its application to cluster physics, the continuum discretized coupled-channels (CDCC) method for breakup reactions, the semi-microscopic approach to heavy-ion subbarrier fusion reactions, the channel coupling effects on nuclear astrophysics and syntheses of superheavy elements, and inclusive breakup and incomplete fusion reactions of weakly-bound nuclei.
description: 90 pages, 37 figures. Accepted for publication in Progress in Particle and Nuclear Physics
FEqa: Finite Element Computations on Quantum Annealers
Creators: name: Raisuddin, Osama Muhammad
name: De, Suvranu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The solution of physical problems discretized using the finite element methods using quantum computers remains relatively unexplored. Here, we present a unified formulation (FEqa) to solve such problems using quantum annealers. FEqa is a hybrid technique in which the finite element problem is formulated on a classical computer, and the residual is minimized using a quantum annealer. The advantages of FEqa include utilizing a single qubit per degree of freedom, enforcing Dirichlet boundary conditions a priori, reaching arbitrary solution precision, and eliminating the possibility of the annealer generating invalid results. FEqa is scalable on the classical portion of the algorithm due to its Single Program Multiple Data (SPMD) nature and does not rely on ground state solutions from the annealer. The exponentially large number of collocation points used in quantum annealing are investigated for their cosine measures, and new iterative techniques are developed to exploit their properties. The quantum annealer has clear advantages in computational time over simulated annealing, for the example problems presented in this paper solved on the D-Wave machine. The presented work provides a pathway to solving physical problems using quantum annealers.
description: 32 pages, 20 figures
Farming as a Life Work
Creators: name: Baker, O. E.
Publisher: name: Unknown
Year: 1932
Subjects: Community/Rural/Urban Development
Financial Economics
Food Consumption/Nutrition/Food Safety
Labor and Human Capital
Land Economics/Use
Teaching/Communication/Extension/Profession

description: Excerpts: I have a son now less than two years old, and I hope when he grows up that he will decide to be a farmer. There are five reasons why I want him to be a farmer: 1. A farmer has more and better food to eat than have most people who live in cities. 2. He has better health and lives longer. 3. He accumulates more property – becomes a wealthier man. 4. He is more likely to enjoy his work than are most city people. 5. He is more likely to rear a family and do his part to promote the future welfare of the Nation and of the world. Let us consider some of the evidence in support of these five statements.
description: Talk given before the sixth National Boys' and Girls' 4-H Club Camp, Washington, D. C, June 18, 1932.
4.4 kV $β$-Ga$_2$O$_3$ Power MESFETs with Lateral Figure of Merit exceeding 100 MW/cm$^2$
Creators: name: Bhattacharyya, Arkka
name: Sharma, Shivam
name: Alema, Fikadu
name: Ranga, Praneeth
name: Roy, Saurav
name: Peterson, Carl
name: Seryogin, George
name: Osinsky, Andrei
name: Singisetti, Uttam
name: Krishnamoorthy, Sriram
Publisher: name: arXiv
Year: 2022
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Field-plated (FP) depletion-mode MOVPE-grown $β$-Ga$_2$O$_3$ lateral MESFETs are realized with superior reverse breakdown voltages and ON currents. A sandwiched SiN$_x$ dielectric field plate design was utilized that prevents etching-related damage in the active region and a deep mesa-etching was used to reduce reverse leakage. The device with L$_{GD}$ = 34.5 $μ$m exhibits an ON current (I$_{DMAX}$) of 56 mA/mm, a high I$_{ON}$/I$_{OFF}$ ratio $>$ 10$^8$ and a very low reverse leakage until catastrophic breakdown at $\sim$ 4.4kV. The highest measurable V$_{BR}$ recorded was 4.57 kV (L$_{GD}$ = 44.5 $μ$m). An LFOM of 132 MW/cm$^2$ was calculated for a V$_{BR}$ of $\sim$ 4.4 kV. The reported results are the first $>$ 4kV-class Ga$_2$O$_3$ transistors to surpass the theoretical FOM of Silicon. These are also the highest I$_{DMAX}$ and lowest R$_{ON}$ values achieved simultaneously for any $β$-Ga$_2$O$_3$ device with V$_{BR}$ $>$ 4kV to date. This work highlights that high breakdown voltages (V$_{BR}$), high lateral figure of merit (LFOM) and high ON currents can be achieved simultaneously in $β$-Ga$_2$O$_3$ lateral transistors.
description: 4 pages, 5 figures
Navigating Supply Chains through a Polycrisis
Creators: name: Pereira, Carla
Publisher: name: The Open University
Year: 2025
Subjects: classificationCode: 350903
subject: Logistics
classificationCode: 350909
subject: Supply chains

description: The global economic landscape is experiencing unprecedented shifts in an era marked by rapid technological advancements, geopolitical tensions, and environmental challenges. As we navigate through the complexities of this rapidly changing landscape, the imperative for the logistics industry to adapt and innovate has never been more critical.This project aims to identify the evolving trends that will shape future supply chains, where innovation, adaptation, and sustainability are the driving forces behind the industries of tomorrow. For that, the objectives are:a) Explore the evolving trends strictly through a polycrisis lens and their impact to global supply chains;b) Develop actionable guidelines for supply chain and logistics professionals to improve their resilience in a polycrisis world.
$κ$-deformed complex scalar field: conserved charges, symmetries and their impact on physical observables
Creators: name: Bevilacqua, Andrea
name: Kowalski-Glikman, Jerzy
name: Wislicki, Wojciech
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we revisit the model of $κ$-deformed complex scalar field. We find that this model possesses ten conserved Noether charges that form, under commutators, a representation of (undeformed) Poincaré algebra. It follows that the theory is relativistic and does not break Lorentz invariance. However the spacetime representation of boosts is not standard, and contains a non-local translation, different for positive and negative energy modes. It then follows that although the masses of particles and anti-particles are equal, the theory violates CPT symmetry in a subtle way. We explain why the Jost-Wightman-Greenberg theorem of equivalence of the Poincaré symmetry and CPT fails in our case. Finally, we discuss the phenomenological consequences of the theory and its possible observational signatures.
description: 41 pages. arXiv admin note: text overlap with arXiv:2009.03135 The published version
δ34S isotope values of dissolved sulfate (SO42−) as a tracer for battery acid (H2SO4) contamination in groundwater
Creators: name: Pichler, Thomas
Publisher: name: Springer
Year: 2005
Subjects: subject: Tracers
subject: isotope
subject: Sulfur
subject: Groundwater contamination
subject: δ34S
subject: Florida
subject: USA
subject: 550

description: The application of sulfur isotope (δ34S) values of sulfate in groundwater provided the information necessary to evaluate the source, transport and fate of battery acid and associated contaminants at the Gulf Coast Recycling (GCR) facility. The chemical and isotopic composition of groundwater beneath the (GCR) property, a battery recycling facility in east Tampa, Florida, varies more than expected for an area of comparable size. Sulfate (SO42−) values, for example, range from 1.2 to 11,500 mg/L and oxygen and hydrogen isotopes do not attenuate towards the weighted annual mean. Those samples that are high in sulfate generally have a low pH, which immediately indicates battery acid (H2SO4) contamination as a potential source for the sulfate. The low pH and high reactivity of the sulfuric acid groundwater cause the formation of hydrogeological microenvironments due to preferential dissolution of carbonate minerals, which in turn causes enhanced recharge and groundwater flow in certain areas; thus, the extreme scatter in the data set. Because of the difficult hydrogeology it is not straightforward to delineate the point-sources of contamination and up to five potential scenarios have to be evaluated: (1) seawater intrusion, (2) upwelling of high-sulfate groundwater, (3) local dissolution of gypsum, (4) an up-gradient contaminant source to the northeast of the GCR property and (5) battery acid contamination.
The mineralogy of arsenic in uranium mine tailings at the Rabbit Lake In-pit Facility, northern Saskatchewan, Canada
Creators: name: Pichler, T.
name: Hendry, M. J.
name: Hall, G. E. M.
Publisher: name: Springer
Year: 2001
Subjects: subject: Arsenic
subject: Hydrous ferric oxide
subject: Mine tailings
subject: Saskatchewan
subject: 550

description: A detailed investigation of the mineralogy of As in the tailings of the Rabbit Lake uranium ore processing facility was conducted. The milling/ore extraction process was sampled at three different locations to obtain information about when, where and under what condition secondary As phases form. These samples were compared with four samples of varying As content from the Rabbit Lake in-pit tailings management facility (TMF). Up to 20% As in the tailings are present in primary minerals that reach the tailings directly because they are not dissolved during the uranium extraction. The remaining 80% constitute As that was dissolved during ore extraction and then re-precipitated before being discharged into the tailings pond. It was not possible to conclusively identify any individual re-precipitated (secondary) As minerals in the Rabbit Lake TMF. Indirect evidence from sequential extraction analyses suggests the presence of an amorphous Ca-As phase and a possible, but unlikely, minor amount of an amorphous Fe-As phase. However, the close association between hydrous ferric oxide (HFO) and As could be clearly demonstrated. HFO was identified to be 2-line ferrihydrite and its XRD pattern geometry indicates a substantial amount of adsorbed As. This is in good agreement with SEM, TEM and sequential extraction analyses that all showed the close association of HFO and As.
AdS--dS Stationary Rotating Black Hole Exact Solution within Einstein--Nonlinear Electrodynamics
Creators: name: Díaz, Alberto A. García
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this report the exact rotating charged black hole solution to the Einstein--nonlinear electrodynamics theory with a cosmological constant is presented. This black hole is equipped with mass, rotation parameter, electric and magnetic charges, cosmological constant $Λ$, and three parameters due to the nonlinear electrodynamics: $β$ is associated to the potential vectors $A_μ$ and ${}^{\star}P_μ$, and two constants, $F_0$ and $G_0$, due to the presence of the invariants $F$ and $G$ in the Lagrangian $L(F(\,x^μ),G(\,x^μ))$. This solution is of Petrov type D, characterized by the Weyl tensor eigenvalue $Ψ_2$, the traceless Ricci tensor eigenvalue $S=2Φ_{(11)}$, and the scalar curvature $R$; it allows for event horizons, exhibits a ring singularity and fulfils the energy conditions. Its Maxwell limit is the de Sitter-Anti--de Sitter--Kerr--Newman black hole solution.
description: arXiv admin note: text overlap with arXiv:2112.06302
Slow crystalline electric field fluctuations in the Kondo lattice SmB$_{6}$
Creators: name: Carlone, M.
name: Souza, J. C.
name: Sichelschmidt, J.
name: Rosa, P. F. S.
name: Urbano, R. R.
name: Pagliuso, P. G.
name: Fisk, Z.
name: Venegas, P. A.
name: Schlottmann, P.
name: Rettori, C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This work reports on the temperature dependence of the electron spin resonance (ESR) of Gd$^{3+}$-doped SmB$_{6}$ single crystals at X- and Q-band microwave frequencies in different crystallographic directions. We found an anomalous inhomogeneous broadening of the Gd$^{3+}$ ESR linewidth ($ΔH$) within 5.3 K $\leq T \leq$ 12.0 K which is attributed to slow crystalline electric field (CEF) fluctuations, slower than the timescale of the ESR microwave frequencies used ($\sim$10 GHz). This linewidth inhomogeneity may be associated to the coupling of the Gd$^{3+}$ $S$-states to the breathing mode of the SmB$_{6}$ cage, and can be simulated by a random distribution of the 4$^{th}$ CEF parameter, $b_4$, that strikingly takes negative and positive values. The temperature at which this inhomogeneity sets in, is related to the onset of a continuous insulator-to-metal phase transition. In addition, based on the interconfigurational fluctuation relaxation model, the observed exponential $T$-dependence of $ΔH$ above $T\simeq$ 10 K gives rise to an excitation energy notably close to the hybridization gap of SmB$_{6}$ ($Δ\simeq$ 60 K). This charge fluctuation scenario provides important ingredients to the physical properties of SmB$_{6}$. We finally discuss the interplay between charge and valence fluctuations under the view of slow CEF fluctuations in SmB$_{6}$ by coupling the Gd$^{3+}$ ions to the breathing phonon mode via a dynamic Jahn-Teller-like mechanism.
Dr Samar Chenouda, Les manifestations de l’exil dans Les vagues de l’âme de Mustapha Chaabane
Creators: name: Chenouda, Samar
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 470501
subject: African literature
classificationCode: 470507
subject: Comparative and transnational literature
classificationCode: 470514
subject: Literary theory

description: Dr Samar Chenouda, Les manifestations de l’exil dans Les vagues de l’âme de Mustapha Chaabane
Experimental observation of Berreman modes in uniaxial anisotropic nanoporous alumina film on aluminium substrate
Creators: name: Pratap, Dheeraj
name: Pradhan, Jitendra Kumar
name: Ramakrishna, Subramanium Anantha
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: In this article, we demonstrate experimentally and verified numerically the excitation of Berreman modes that propagate in a dielectric film of uniaxial anisotropic nanoporous alumina grown on an aluminium substrate. It is an air-dielectric-metal asymmetric polaritonic system with a real part of the effective permittivity having a value near zero. The modes are excited at a wavelength lower than the epsilon near zero wavelength region. Minimum reflection is observed for the mid-infrared p-polarized light, while maximum reflection is observed for the s-polarized light. The experimental results are numerically reproduced for both p- and s-polarized light and confirm the Berreman modes excitation in the system. At the exciting wavelength, the field is confined in the dielectric region near the air-dielectric interface. The reported system is straightforward and could be easily fabricated over a large scale and is helpful in a variety of mid-infrared applications such as thermal management systems, sensors, passive radiative cooling devices, non-linear applications, and terahertz frequency generation.
description: 14 pages, 6 figures
Search for invisible decays of the Higgs boson produced via vector boson fusion in proton-proton collisions at $\sqrt{s} =$ 13 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search for invisible decays of the Higgs boson produced via vector boson fusion (VBF) has been performed with 101 fb$^{-1}$ of proton-proton collisions delivered by the LHC at $\sqrt{s} =$ 13 TeV and collected by the CMS detector in 2017 and 2018. The sensitivity to the VBF production mechanism is enhanced by constructing two analysis categories, one based on missing transverse momentum, and a second based on the properties of jets. In addition to control regions with Z and W boson candidate events, a highly populated control region, based on the production of a photon in association with jets, is used to constrain the dominant irreducible background from the invisible decay of a Z boson produced in association with jets. The results of this search are combined with all previous measurements in the VBF topology, based on data collected in 2012 (at $\sqrt{s} =$ 8 TeV), 2015, and 2016, corresponding to integrated luminosities of 19.7, 2.3, and 36.3 fb$^{-1}$, respectively. The observed (expected) upper limit on the invisible branching fraction of the Higgs boson is found to be 0.18 (0.10) at the 95% confidence level, assuming the standard model production cross section. The results are also interpreted in the context of Higgs-portal models.
description: Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIG-20-003 (CMS Public Pages)
Migration Und Soziale Arbeit Im Kontext Der Zuwanderungsdebatte: Eine Migrationspolitische Positionierung Der Sozialen Arbeit Aus Berufsethischer Sicht
Creators: name: Brotbek, Luzius
Publisher: name: Zenodo
Year: 2015
Subjects: subject: gnd:4120730-0
subject: gnd:4055676-1
subject: gnd:4253135-4

description: Obwohl Migrantinnen und Migranten zum Wohlstand der Schweiz entscheidend beigetragen haben und immer noch beitragen, obwohl wir momentan die grösste Flüchtlingskrise seit dem Zweiten Weltkrieg erleben: Der Ruf, die Zuwanderung einzuschränken, zu steuern und zu begrenzen, wird immer lauter. Wo bleibt die Solidarität? Die Masseneinwanderungsinitiative verlangt unter anderem die Einführung von Kontingenten und Höchstzahlen für alle neu in die Schweiz ziehenden Migrantinnen und Migranten unter Einbezug des Asyl- und Flüchtlingsbereiches. Die Menschenrechte, die Menschenwürde und soziale Gerechtigkeit sind zentrale Prinzipien für die Soziale Arbeit. Genau diese Prinzipien scheinen jedoch bei der Umsetzung der erwähnten Initiative gefährdet zu sein. Auch wenn kein generelles Menschenrecht auf Einwanderung besteht, heisst dies nicht, dass eine Wegweisung von Flüchtlingen und Schutzbedürftigen legitim ist. Gleichzeitig ist eine Rückkehr zum menschenunwürdigen Saisonnierstatut als ungerechte Praktik aufzudecken und zurückzuweisen. Wie es der Titel schon verrät, geht es in dieser Bachelor-Arbeit um „Migration und Soziale Arbeit im Kontext des aktuellen Migrationsdiskurses rund um die Masseneinwanderungsinitiative“. Ziel ist eine Positionierung der Sozialen Arbeit aus berufsethischer Sicht. Dabei wird die Komplexität von Migration und Migrationspolitik aufgezeigt, die menschenrechtliche Situation analysiert und auf die Migrationsgeschichte der Schweiz eingegangen.
description: + Code Diss LU: hslusa basa 2015 + Fussnote: Ausbildungsgang Sozialarbeit
Weighted Lorentz invariant measures as quantum field theory regulators
Creators: name: Cartas-Fuentevilla, R.
name: Mendez-Ugalde, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work we develop a re-formulation of quantum field theory through the more general weighted Lorentz invariant measures that the definition of quantum fields allows; this approach provides finite answers for the long-live problems of the traditional formulations of quantum field theories, namely, smooth distributions for the field commutators that are finite a short distances, finite vacuum expectation values for the energy (without invoking normal ordering of operators), and finite fluctuations for the field operators. Our construction is based on a critical point of view on conventional quantum field theory statements, instead of invoking string theory inspired frameworks, since they are not necessary. We shall show that the conventional scheme for constructing quantum field theories has the necessary ingredients for obtaining generalized versions that, respecting the Lorentz symmetry, allows us to cure some of the divergences that plague the different formulations, particularly the ultra-violet divergences; additionally the present scheme will allows us to construct an infinite family of noncommutative field theories that are compared with other formulations. At the end, we discuss the impact of our formulation on particle physics numerology and on the cosmological constant problem
description: 2 figures, 17 pages
ESTRATÉGIAS PARA O CRESCIMENTO DE UMA EMPRESA FAMILIAR: OS IMPACTOS DA EDUCAÇÃO COORPORATIVA NO DESENVOLVIMENTO DOS NEGÓCIOS
Creators: name: None, None
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 350707
subject: Leadership

description: O presente caso tem a finalidade de estudara importância da educação coorporativa no processo de desenvolvimento de empresas, em especial no crescimento de empresas familiares que buscam melhorar a visibilidade no mercado e garantir a fidelidade dos clientes, aumentando,assim,os lucros para o negócio. Vamos acompanhar a história de Gerson, gestor do Supermercado Alvorada,que se depara com um dilema: comomotivar e impulsionar as pessoas que trabalhavam com ele diante da dificuldade de sua equipe em alcançar a meta propostapara o mês.Este caso pode ser aplicado nos cursos de graduação e pós-graduação, recomendável em disciplina de estratégia que discutam o tema crescimento organizacional e, em particular, crescimento de empresas familiares. Pode ser utilizado,também,para debater sobre estratégias organizacionais em busca de crescimento e reconhecimento no mercado. Aplica-se à discussão de tópicos que circundam as empresas familiares. Comtempla os seguintes temas: Crescimento Organizacional, Empresa Familiar, Estratégias, Treinamento de Pessoas, Gestão de Equipes.
Gauge anomalies of finite groups
Creators: name: Gripaios, Ben
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show how the theory of characters can be used to analyse an anomaly corresponding to chiral fermions carrying an arbitrary representation of a gauge group that is finite, but otherwise arbitrary. By way of example, we do this for some groups of relevance for the study of quark and lepton masses and mixings.
description: 4 pp; v2 - added a discussion of potential further anomalies
Monitoring inner regions in the RY Tau jet
Creators: name: Uyama, Taichi
name: Takami, Michihiro
name: Cugno, Gabriele
name: Deo, Vincent
name: Guyon, Olivier
name: Hashimoto, Jun
name: Lozi, Julien
name: Norris, Barnaby
name: Tamura, Motohide
name: Vievard, Sebastien
name: Guenther, Hans Moritz
name: Schneider, P. Christian
name: Akiyama, Eiji
name: Beck, Tracy L.
name: Currie, Thayne
name: Hodapp, Klaus
name: Kwon, Jungmi
name: Mayama, Satoshi
name: Ohyama, Youichi
name: Pyo, Tae-Soo
name: Wisniewski, John P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present multi-epoch observations of the RY~Tau jet for H$α$ and [\ion{Fe}{2}] 1.644 \micron~emission lines obtained with Subaru/SCExAO+VAMPIRES, Gemini/NIFS, and Keck/OSIRIS in 2019--2021. These data show a series of four knots within 1$\arcsec$ consistent with the proper motion of $\sim$0\farcs3~yr$^{-1}$, analogous to the jets associated with another few active T-Tauri stars. However, the spatial intervals between the knots suggest the time intervals of the ejections of about 1.2, 0.7, and 0.7 years, significantly shorter than those estimated for the other stars. These H$α$ images contrast with the archival VLT/SPHERE/ZIMPOL observations from 2015, which showed only a single knot-like feature at $\sim0\farcs25$. The difference between the 2015 and 2019--2021 epochs suggests an irregular ejection interval within the six-year range. Such variations of the jet ejection may be related to a short-term ($
description: 9 pages, 4 figures, accepted for publication in AJ
Robust Reinforcement Learning via Curricular Learning
Creators: name: Song, Yeeho
Publisher: name: Carnegie Mellon University
Year: 2025
Subjects: classificationCode: 4007
subject: Control engineering, mechatronics and robotics

description: Reinforcement Learning (RL) presents great promises for autonomous agents. However, when using robots in a safety critical domain, a system has to be robust enough to be deployed in real life. For example, the robot should be able to perform across different scenarios it will encounter. The robot should avoid entering undesirable and irreversible states, such as crashing into obstacles and ideally should meet the safety consideration even if its primary goals cannot be achieved. One way to improve an RL agent’s robustness is to explore a variety of scenarios, environment parameters and opponent policies, via domain randomization. However, as an agent’s performance gets better, it becomes less likely to explore the region the agent performs poorly. An approach to solve this problem is Adversarial training, where an adversarial agent tries to inject noise to make the ego agent perform poorly. However, in such a setup, it’s much easier for the adversary to win over the ego agent, and hence ego agent often fails to overcome the adversarial noise without expert supervision. Also, as we move robots into more unstructured environments, environmental factors can affect the distribution of state space and dynamics more than what can be encoded as noise. In my thesis, I will discuss how we can use curriculum learning to help an agent explore against variety of different situations, opponents, and dynamics efficiently to help achieve a robust performance. The first part of the thesis will introduce ideas in curriculum learning and how it can be used to explore a wide range of environment. The second part will be expanding such concept to multiagent domain and see how curriculum learning can help find a robust policy against collaborative and competitive, symmetrical and asymmetrical setups. Finally, I will be expanding the findings to the Quality Diversity domain and explore how the curriculum learning can help us to find a library of behaviors that cumulatively achieves robustness.