cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The roles of oocyte- and theca cell-derived bone morphogenetic proteins in human granulosa cells
Creators: name: Chang, Hsun-Ming
Publisher: name: University of British Columbia
Year: 2014

description: Exerting a broad range of biological effects in various tissues, bone morphogenetic proteins (BMPs) are multi-functional growth factors that belong to the transforming growth factor β superfamily. Accumulating evidence indicates that ovarian BMPs are critical regulators of ovarian function and play important roles in the female reproductive system. Mutual communication between oocytes and the surrounding somatic cells is mandatory for normal follicle development, as these locally expressed growth factors function mainly as paracrine/autocrine effectors in granulosa cells. Previous studies have shown that oocytes may secrete an anti-luteinization factor and theca cells may have luteinization-inhibiting activities. We therefore hypothesized that during the late follicular stage, oocyte-derived and theca cell-derived BMPs may prevent premature luteinization by down-regulating several ovulation-related genes. This study aims to investigate the anti-luteinization effects of oocyte- and theca cell-derived BMPs in human granulosa cells. An established immortalized human granulosa cell line (SVOG), granulosa cell tumor cell line (KGN) and primary granulosa-lutein cells were used as study models. Several parameters of luteinization were investigated following exposure to recombinant human BMP4, BMP7 or BMP15. Dual pharmacological and siRNA-based approaches were used to examine the underlying mechanisms and verify the specificity of the effects. Our studies demonstrate that oocyte-derived BMP15 functions as a paracrine factor to decrease progesterone production and that theca cell-derived BMP4 and BMP7 down-regulate PTX3 expression in human granulosa cells. In addition, all three growth factors decrease intercellular communication by down-regulating Cx43-coupled gap junction formation. Furthermore, both BMP4 and BMP7 increase the production of a luteinization inhibitor activin A by up-regulating the expression of inhibin βA subunit and furin. Interestingly, different BMPs act through differential subsets of type I receptor-driven SMAD-dependent pathways. These results suggest that oocytes and theca cells may play important roles in the prevention of premature luteinization, a process that is essential for normal ovarian function and fertility. Our findings provide important insight into ovarian biology, and may lead to the development of novel therapeutic tools for fertility regulation.
DEP Bulletin:Volume 39 Issue 10
Creators: name: No Name Supplied
Publisher: name: No Publisher Supplied
Year: 2015

description: The DEP bulletin is a semi-monthly publication of the New Jersey Department of Environmental Protection. It contains a list of construction permit applications recently filed or acted upon by the Department along with a calendar of events of interest, a schedule of public hearings, and Environmental Impact Statements acted upon during the period.
On the formation and decay of a molecular ultracold plasma
Creators: name: Saquet, N.
name: Morrison, J. P.
name: Schulz-Weiling, M.
name: Sadeghi, H.
name: Yiu, J.
name: Rennick, C. J.
name: Grant, E. R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Double-resonant photoexcitation of nitric oxide in a molecular beam creates a dense ensemble of $50f(2)$ Rydberg states, which evolves to form a plasma of free electrons trapped in the potential well of an NO$^+$ spacecharge. The plasma travels at the velocity of the molecular beam, and, on passing through a grounded grid, yields an electron time-of-flight signal that gauges the plasma size and quantity of trapped electrons. This plasma expands at a rate that fits with an electron temperature as low as 5 K, colder that typically observed for atomic ultracold plasmas. The recombination of molecular NO$^+$ cations with electrons forms neutral molecules excited by more than twice the energy of the NO chemical bond, and the question arises whether neutral fragmentation plays a role in shaping the redistribution of energy and particle density that directs the short-time evolution from Rydberg gas to plasma. To explore this question, we adapt a coupled rate-equations model established for atomic ultracold plasmas to describe the energy-grained avalanche of electron-Rydberg and electron-ion collisions in our system. Adding channels of Rydberg predissociation and two-body, electron- cation dissociative recombination to the atomic formalism, we investigate the kinetics by which this relaxation distributes particle density and energy over Rydberg states, free electrons and neutral fragments. The results of this investigation suggest some mechanisms by which molecular fragmentation channels can affect the state of the plasma.
Network-theoretic modeling of fluid-structure interactions
Creators: name: Nair, Aditya G.
name: Douglass, Samuel B.
name: Arya, Nitish
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences
subject: 76D17

description: The coupling interactions between deformable structures and unsteady fluid flows occur across a wide range of spatial and temporal scales in many engineering applications. These fluid-structure interactions (FSI) pose significant challenges in accurately predicting flow physics. In the present work, two multi-layer network approaches are proposed that characterize the interactions between the fluid and structural layers for an incompressible laminar flow over a two-dimensional compliant flat plate at a 35-degrees angle of attack. In the first approach, the network nodes are formed by wake vortices and bound vortexlets, and the edges of the network are defined by the induced velocity between these elements. In the second approach, coherent structures (fluid modes), contributing to the kinetic energy of the flow and structural modes, contributing to the kinetic energy of the compliant structure constitute the network nodes. The energy transfers between the modes are extracted using a perturbation approach. Furthermore, the network structure of the FSI system is simplified using the community detection algorithm in the vortical approach and by selecting dominant modes in the modal approach. Network measures are used to reveal the temporal behavior of the individual nodes within the simplified FSI system. Predictive models are then built using both data-driven and physics-based methods. Overall, this work sets the foundation for network-theoretic reduced-order modeling of fluid-structure interactions, generalizable to other multi-physics systems.
description: 20 pages, 10 figures
A Remarkable Identity Involving Bessel Functions
Creators: name: Dominici, Diego E.
name: Gill, Peter M. W.
name: Limpanuparb, Taweetham
Publisher: name: arXiv
Year: 2011
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We consider a new identity involving integrals and sums of Bessel functions. The identity provides new ways to evaluate integrals of products of two Bessel functions. The identity is remarkably simple and powerful since the summand and integrand are of exactly the same form and the sum converges to the integral relatively fast for most cases. A proof and numerical examples of the identity are discussed.
description: 10 pages, 2 figures
Encarceramento em massa como política social nos Estados Unidos e Brasil
Creators: name: Danin, Renata
Publisher: name: Altre Modernità
Year: 2019
Subjects: Ghetto; Mass Incarceration; Police State

description: Both the United States and Brazil have undergone major changes in social policies. The replacement of the welfare state by a police state today, in practice, demonstrates the excessive criminalization of marginality that generates punitive restraint that affects mainly the poor and, above all, the black population. This article approaches this relationship through a bibliographical review and has as main finding the similarities between Brazil and the United States in its social construction that leads to mass incarceration.
description: Altre Modernità, 2019: NUMERO SPECIALE: Di nuove e vecchie schiavitù: storie di dominio, lotte per la libertà
Cartilha Virtual 02: Situação dos Recursos Hídricos no Brasil - 3ª Edição
Creators: name: Malheiros, Tadeu Fabrício
Publisher: name: figshare
Year: 2021
Subjects: subject: 50203 Environmental Education and Extension
subject: FOS: Earth and related environmental sciences

description: A Cartilha virtual 02 "Situação dos Recursos Hídricos no Brasil" é parte intergrante do material utlizado no curso, em formato à distância, EaD Água como elemento Interdisciplinar do Ensino nas Escolas, realizado pela Universidade de São Paulo, em parceria com a ANA - Agência Nacional de Água e Saneamento Básico, e a Rede PROFCIAMB - Programa de Pós Graduação Mestrado profissional em Rede nacional para o Ensino das Ciências Ambientais.
Non linear pseudo-bosons
Creators: name: Bagarello, Fabio
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In a series of recent papers the author has introduced the notion of (regular) pseudo-bosons showing, in particular, that two number-like operators, whose spectra are ${\Bbb N}_0:={\Bbb N}\cup\{0\}$, can be naturally introduced. Here we extend this construction to operators with rather more general spectra. Of course, this generalization can be applied to many more physical systems. We discuss several examples of our framework.
description: In press in Journal of Mathematical Physics
Bifurcation instructed design of multistate machines
Creators: name: Yang, Teaya
name: Hathcock, David
name: Chen, Yuchao
name: McEuen, Paul
name: Sethna, James P.
name: Cohen, Itai
name: Griniasty, Itay
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We propose a novel design paradigm for multistate machines where transitions from one state to another are organized by bifurcations of multiple equilibria of the energy landscape describing the collective interactions of the machine components. This design paradigm is attractive since, near bifurcations, small variations in a few control parameters can result in large changes to the system's state providing an emergent lever mechanism. Further, the topological configuration of transitions between states near such bifurcations ensures robust operation, making the machine less sensitive to fabrication errors and noise. To design such machines, we develop and implement a new efficient algorithm that searches for interactions between the machine components that give rise to energy landscapes with these bifurcation structures. We demonstrate a proof of concept for this approach by designing magneto elastic machines whose motions are primarily guided by their magnetic energy landscapes and show that by operating near bifurcations we can achieve multiple transition pathways between states. This proof of concept demonstration illustrates the power of this approach, which could be especially useful for soft robotics and at the microscale where typical macroscale designs are difficult to implement.
description: 8 pages, 5 figures plus 8 SI pages and 4 SI figures, SI movies available upon request
Non-centrosymmetric Sr$_{2}$IrO$_{4}$ obtained under High Pressure
Creators: name: Wang, Haozhe
name: Marshall, Madalynn
name: Wang, Zhen
name: Plumb, Kemp W.
name: Greenblatt, Martha
name: Zhu, Yimei
name: Walker, David
name: Xie, Weiwei
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Sr$_{2}$IrO$_{4}$ with strong spin-orbit coupling (SOC) and Hubbard repulsion (U) hosts Mott insulating states. The similar crystal structure, magnetic and electronic properties, particularly the $d$-wave gap observed in Sr$_{2}$IrO$_{4}$ enhanced the analogies to cuprate high-$T_{c}$ superconductor, La$_{2}$CuO$_{4}$. The incomplete analogy was due to the lack of broken inversion symmetry phases observed in Sr$_{2}$IrO$_{4}$. Here, under high pressure and high temperature conditions, we report a non-centrosymmetric Sr$_{2}$IrO$_{4}$. The crystal structure and its noncentrosymmetric character were determined by single crystal X-ray diffraction and high-resolution scanning transmission electron microscopy (HR-STEM). The magnetic characterization confirms the Ir$^{4+}$ with $S$ = 1/2 at low temperature in Sr$_{2}$IrO$_{4}$ with magnetic ordering occurred at around 86 K, where a larger moment is observed than the ambient pressure Sr$_{2}$IrO$_{4}$. Moreover, the resistivity measurement shows three-dimensional Mott variable-range hopping existed in the system. This non-centrosymmetric Sr$_{2}$IrO$_{4}$ phase appears to be a unique material to offer further understanding of high-$T_{c}$ superconductivity.
Roadmap on structured waves
Creators: name: Bliokh, K. Y.
name: Karimi, E.
name: Padgett, M. J.
name: Alonso, M. A.
name: Dennis, M. R.
name: Dudley, A.
name: Forbes, A.
name: Zahedpour, S.
name: Hancock, S. W.
name: Milchberg, H. M.
name: Rotter, S.
name: Nori, F.
name: Özdemir, Ş. K.
name: Bender, N.
name: Cao, H.
name: Corkum, P. B.
name: Hernández-García, C.
name: Ren, H.
name: Kivshar, Y.
name: Silveirinha, M. G.
name: Engheta, N.
name: Rauschenbeutel, A.
name: Schneeweiss, P.
name: Volz, J.
name: Leykam, D.
name: Smirnova, D. A.
name: Rong, K.
name: Wang, B.
name: Hasman, E.
name: Picardi, M. F.
name: Zayats, A. V.
name: Rodríguez-Fortuño, F. J.
name: Yang, C.
name: Ren, J.
name: Khanikaev, A. B.
name: Alù, A.
name: Brasselet, E.
name: Shats, M.
name: Verbeeck, J.
name: Schattschneider, P.
name: Sarenac, D.
name: Cory, D. G.
name: Pushin, D.
name: Birk, M.
name: Gorlach, A.
name: Kaminer, I.
name: Cardano, F.
name: Marrucci, L.
name: Krenn, M.
name: Marquardt, F.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Structured waves are ubiquitous for all areas of wave physics, both classical and quantum, where the wavefields are inhomogeneous and cannot be approximated by a single plane wave. Even the interference of two plane waves, or a single inhomogeneous (evanescent) wave, provides a number of nontrivial phenomena and additional functionalities as compared to a single plane wave. Complex wavefields with inhomogeneities in the amplitude, phase, and polarization, including topological structures and singularities, underpin modern nanooptics and photonics, yet they are equally important, e.g., for quantum matter waves, acoustics, water waves, etc. Structured waves are crucial in optical and electron microscopy, wave propagation and scattering, imaging, communications, quantum optics, topological and non-Hermitian wave systems, quantum condensed-matter systems, optomechanics, plasmonics and metamaterials, optical and acoustic manipulation, and so forth. This Roadmap is written collectively by prominent researchers and aims to survey the role of structured waves in various areas of wave physics. Providing background, current research, and anticipating future developments, it will be of interest to a wide cross-disciplinary audience.
description: 110 pages, many figures
Protego ergo obligo… Nuove forme di obbedienza per rinnovate forme di legittimità?
Creators: name: Gasbarro, Luca
Publisher: name: Altre Modernità
Year: 2019
Subjects: work; legitimacy; power, obedience

description: This essay aims to analyse the relationship between work and legitimacy. This relationship is due to an increasing and pervasive expansion of the economic crisis that has significantly changed the relationship between state and citizen.
description: Altre Modernità, 2019: NUMERO SPECIALE: Di nuove e vecchie schiavitù: storie di dominio, lotte per la libertà
57-Fe Mossbauer study of magnetic ordering in superconducting K_0.85Fe_1.83Se_2.09 single crystals
Creators: name: Ryan, D. H.
name: Rowan-Weetaluktuk, W. N.
name: Cadogan, J. M.
name: Hu, R.
name: Straszheim, W. E.
name: Bud'ko, S. L.
name: Canfield, P. C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The magnetic ordering of superconducting single crystals of K_0.85Fe_1.83Se_2.09 has been studied between 10K and 550K using 57-Fe Mossbauer spectroscopy. Despite being superconducting below T_sc ~30K, the iron sublattice in K_0.85Fe_1.83Se_2.09 clearly exhibits magnetic order from well below T_sc to its Néel temperature of T_N = 532 +/- 2K. The iron moments are ordered perpendicular to the single crystal plates, i.e. parallel to the crystal c-axis. The order collapses rapidly above 500K and the accompanying growth of a paramagnetic component suggests that the magnetic transition may be first order, which may explain the unusual temperature dependence reported in recent neutron diffraction studies.
description: 6 pages, 4 figures Submitted to Phys.Rev.B
Voci da un Dizionario: Le rivolte degli schiavi, João José Reis e Teorie razziali, Lilia Moritz Schwarcz
Creators: name: Alberani, Elisa
name: Milani, Ada
Publisher: name: Altre Modernità
Year: 2019

description: Voci da un Dizionario: Le rivolte degli schiavi, João José Reis e Teorie razziali, Lilia Moritz Schwarcz in Dicionário da Escravidão e Liberdade – 50 textos críticos, Lilia Moritz Schwarcz e Flávio dos Santos Gomes (org.)

(São Paulo, Companhia das Letras, 2018, pp. 411-427, ISBN 9788535930948)

di Elisa Alberani e Ada Milani
description: Altre Modernità, 2019: NUMERO SPECIALE: Di nuove e vecchie schiavitù: storie di dominio, lotte per la libertà
Feedback to briefing note 'Modelling de-ratinge factors for interconnected countries in the the 2021 Electricity Capacity Report'
Creators: name: Deakin, Matthew
name: Greenwood, David
name: Bloomfield, Hannah
name: Scholes, Susan
name: Brayshaw, David
name: Furong Li
Publisher: name: Zenodo
Year: 2021

description: Feedback from the Supergen Energy Networks Interconnectors Markets & Regulations Subworking group to BEIS Panel of Technical Experts request for feedback for methods relating to the 2021 GB Capacity Market.
Marcelo D’Salete, Cumbe. La ribellione degli schiavi africani in Brasile raccontata con gli occhi degli oppressi
Creators: name: Milani, Ada
Publisher: name: Altre Modernità
Year: 2019

description: Marcelo D’Salete, Cumbe. La ribellione degli schiavi africani in Brasile raccontata con gli occhi degli oppressi

(Padova, Becco Giallo, 2016, 173 pp., ISBN 978-88-99016-41-8)

di Ada Milani
description: Altre Modernità, 2019: NUMERO SPECIALE: Di nuove e vecchie schiavitù: storie di dominio, lotte per la libertà
Pseudo-bosons, so far
Creators: name: Bagarello, Fabio
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In the past years several extensions of the canonical commutation relations have been proposed by different people in different contexts and some interesting physics and mathematics have been deduced. Here, we review some recent results on the so-called {\em pseudo-bosons}. They arise from a special deformation of the canonical commutation relation $[a,a^\dagger]=\1$, which is replaced by $[a,b]=\1$, with $b$ not necessarily equal to $a^\dagger$. We start discussing some of their mathematical properties and then we discuss several examples.
description: In press in Reports on Mathematical Physics
Editoriale/Editorial/Éditorial/Editorial
Creators: name: Thomas Casadei, (A Cura Di)
name: Vincenzo Russo, (A Cura Di)
Publisher: name: Altre Modernità
Year: 2019

description: Numero speciale

Di nuove e vecchie schiavitù: storie di dominio, lotte per la libertà

(a cura di) Thomas Casadei e Vincenzo Russo
description: Altre Modernità, 2019: NUMERO SPECIALE: Di nuove e vecchie schiavitù: storie di dominio, lotte per la libertà
Ion-Implanted $^8$Li Nuclear Magnetic Resonance in Highly Oriented Pyrolytic Graphite
Creators: name: Ticknor, John O.
name: Adelman, Jonah R.
name: Chatzichristos, Aris
name: Dehn, Martin H.
name: Egoriti, Luca
name: Fujimoto, Derek
name: Karner, Victoria L.
name: Kiefl, Robert F.
name: Levy, C. D. Philip
name: Li, Ruohong
name: McFadden, Ryan M. L.
name: Morris, Gerald D.
name: Oudah, Mohamed
name: Stachura, Monika
name: Thoeng, Edward
name: MacFarlane, W. Andrew
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We report $β$-detected nuclear magnetic resonance of ultra-dilute $^{8}$Li$^{+}$ implanted in highly oriented pyrolytic graphite (HOPG). The absence of motional narrowing and diffusional spin-lattice relaxation implies Li$^+$ is not appreciably mobile up to 400 K, in sharp contrast to the highly lithiated stage compounds. However, the relaxation is remarkably fast and persists down to cryogenic temperatures. Ruling out extrinsic paramagnetic impurities and intrinsic ferromagnetism, we conclude the relaxation is due to paramagnetic centers correlated with implantation. While the resulting effects are not consistent with a Kondo impurity, they also differ from free paramagnetic centers, and we suggest that a resonant scattering approach may account for much of the observed phenomenology.
Atom-molecule conversion with particle losses
Creators: name: Cui, B.
name: Wang, L. C.
name: Yi, X. X.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Based on the mean-field approximation and the phase space analysis, we study the dynamics of an atom-molecule conversion system subject to particle loss. Starting from the many-body dynamics described by a master equation, an effective nonlinear Schrödinger equation is introduced. The classical phase space is then specified and classified by fixed points. The boundary, which separate different dynamical regimes have been calculated and discussed. The effect of particle loss on the conversion efficiency and the self-trapping is explored.
description: 6 pages, 5 figures
Accelerated paths and Unruh effect II: finite time detector response in (Anti) de Sitter spacetime and Huygen's Principle
Creators: name: Ahmed, Shahnewaz
name: Faruk, Mir Mehedi
name: Rahman, Muktadir
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the finite time response of an Unruh-DeWitt particle detector described by a qubit (two-level system) moving with uniform constant acceleration in maximally symmetric spacetimes. The $D$ dimensional massless fermionic response function in de Sitter (dS) background is found to be identical to that of a detector linearly coupled to a massless scalar field in $2D$ dimensional dS background. Furthermore, we visit the status of Huygen's principle in the Unruh radiation observed by the detector.
Perceived Discrimination among Persons with Disability (Divyangjan) in Haryana: An Exploratory Attempt
Creators: name: Malik, Deepak
name: Yadav, V N
Publisher: name: figshare
Year: 2021
Subjects: subject: 111703 Care for Disabled
subject: FOS: Health sciences

description: Background: Millions of people across the world suffer from some type of disability. Disabled individuals face a wide range of psychological, social, cultural, physical, economic, vocational, and other problems, as well as discrimination and mistreatment. Aim: The aim of the study is to explore how persons with disability (PwD) perceive the community’s discriminating behavior towards them. Method: A purposive sampling approach was used, and the heads of various institutions were contacted for selecting the participants, mainly Physically Handicapped, Hearing Impaired, and Visually Impaired were included. A semi-structured personal information sheet and Perceived Discrimination Scale were administered. Data analysis: The data were analyzed using descriptive analysis to determine the frequency of perceived discrimination with different types of disability, and One-way ANOVA was used to quantify the differences between types of different disabilities. Results: A total 670 disabled people (male = 450; female = 220) from Bhiwani district of Haryana were enrolled in the present study. The sample ranged in age from 18 to 55 years (mean ± SD; 36.23 ± 6.41). The analysis of variance revealed a significant main effect of Type of Disability (F2,667= 10.32, pConclusion: The present study indicates that respondents encounter discrimination on an individual and group level in their daily lives. The present findings point to the need for additional action research targeted at changing negative public attitudes and disabled people's self-perception.
Interdisciplinary Collaboration through Designing 3D Simulation Case Studies
Creators: name: Bai, Xin
name: Fusco, Dana
Publisher: name: arXiv
Year: 2011
Subjects: subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: Interdisciplinary collaboration is essential for the advance of research. As domain subjects become more and more specialized, researchers need to cross disciplines for insights from peers in other areas to have a broader and deeper understand of a topic at micro- and macro-levels. We developed a 3D virtual learning environment that served as a platform for faculty to plan curriculum, share educational beliefs, and conduct cross-discipline research for effective learning. Based upon the scripts designed by faculty from five disciplines, virtual doctors, nurses, or patients interact in a 3D virtual hospital. The teaching vignettes were then converted to video clips, allowing users to view, pause, replay, or comment on the videos individually or in groups. Unlike many existing platforms, we anticipated a value-added by adding a social networking capacity to this virtual environment. The focus of this paper is on the cost-efficiency and system design of the virtual learning environment.
Electron spin secluded inside a bottom-up assembled standing metal-molecule nanostructure
Creators: name: Esat, Taner
name: Ternes, Markus
name: Temirov, Ruslan
name: Tautz, F. Stefan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Artificial nanostructures, fabricated by placing building blocks such as atoms or molecules in well-defined positions, are a powerful platform in which quantum effects can be studied and exploited on the atomic scale. Here, we report a strategy to significantly reduce the electron-electron coupling between a large planar aromatic molecule and the underlying metallic substrate. To this end, we use the manipulation capabilities of a scanning tunneling microscope (STM) and lift the molecule into a metastable upright geometry on a pedestal of two metal atoms. Measurements at millikelvin temperatures and magnetic fields reveal that the bottom-up assembled standing metal-molecule nanostructure has an $S = \frac{1}{2}$ spin which is screened by the substrate electrons, resulting in a Kondo temperature of only $291 \pm 13$ mK. We extract the Landé $g$-factor of the molecule and the exchange coupling $Jρ$ to the substrate by modeling the differential conductance spectra using a third-order perturbation theory in the weak coupling and high-field regimes. Furthermore, we show that the interaction between the STM tip and the molecule can tune the exchange coupling to the substrate, which suggests that the bond between the standing metal-molecule nanostructure and the surface is mechanically soft.
Free Fermionic Schur Functions
Creators: name: Naprienko, Slava
Publisher: name: arXiv
Year: 2023
Subjects: subject: Combinatorics (math.CO)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We introduce a new family of Schur functions $s_{λ/μ;a,b}(x/y)$ that depend on two sets of variables and two sequences of parameters. These free fermionic Schur functions have a hidden symmetry between the two sets of parameters that allows us to generalize and unify factorial, supersymmetric, and dual Schur functions from literature. We then prove that these functions satisfy the supersymmetric Cauchy identity $$ \sum_λs_{λ;a,b}(x/y)\widehat{s}_{λ;a,b}(z/w) = \prod_{i,j}\frac{1+y_iz_j}{1-x_iz_j}\frac{1+x_iw_j}{1-y_iw_j}, $$ where $\widehat{s}_{λ;a,b}(z/w) = s_{λ';b',a'}(w/z)$ are the dual functions. Our approach is based on the integrable six vertex model with free fermionic Boltzmann weights. We show that these weights satisfy the \textit{refined Yang-Baxter equation}, which allows us to prove well-known properties of Schur functions: supersymmetry, combinatorial descriptions, the Jacobi-Trudi identity, the Nägelsbach-Kostka formula, the Giambelli formula, the Ribbon formula, the Weyl determinant formula, the Berele-Regev factorization, dual Cauchy identity, the flagged determinant formula, and many others. We emphasize that many of these results are novel even in special cases.
description: A large editing of the paper, many sections were changed or extended. To appear in Advances in Mathematics
Political regimes and health : competing explanations
Creators: name: Patterson, Andrew Cormac
Publisher: name: University of British Columbia
Year: 2014

description: Many studies find that democratic governance improves population health. However, few offer a rigorous conceptualization of democracy. Many studies may overestimate the contribution of democracy to population health by removing cases with missing data from their analyses. Some highlight the importance of a legacy of democracy for health, but utilize measures of ‘level’ or degree of democracy that may confound the impact of democracy with other qualities of political regimes. Finally, few studies test specific explanations for the putative health effects of democracy. To address these issues, I use annual time-series data spanning from 1960 through 2010 to investigate variations in population health by political regime type. A combination of data supplementation and multiple imputation facilitates production of a working dataset with virtually complete data for 168 nations. My analysis proceeds utilizing a common measure of the ‘level’ of democracy (the Polity IV scale), followed by the application of a more specific operationalization of democracy that assesses whether countries choose their leaders via free and fair elections. I determine whether democracy is associated with population health outcomes after which I test various competing explanations for how and why democracy ostensibly promotes health while ruling out likely confounders. I find that level of democracy correlates positively with life expectancy and negatively with infant mortality rates and crude mortality rates. However, the accumulation of Polity scores over time (‘democratic capital’) is relevant for infant mortality only, while the strength and legacy of regimes is associated with population health irrespective of regime type. Models using the binary measure of electoral democracy indicate that, on average, people living in democratic nations can expect 10.8 more years of life and have 57% less infant mortality and 21% less overall mortality. I identify several mechanisms that may link political democracy to population health, namely, systems of accountability that constrain the decision-making powers of elected leaders, the promotion of strong institutional frameworks through the distribution of freedoms to compete for political influence and the advancement of economic prosperity. Options for further investigating the influence of democracy on population health are discussed.
CHeart: A Conditional Spatio-Temporal Generative Model for Cardiac Anatomy
Creators: name: Qiao, Mengyun
name: Wang, Shuo
name: Qiu, Huaqi
name: de Marvao, Antonio
name: O'Regan, Declan P.
name: Rueckert, Daniel
name: Bai, Wenjia
Publisher: name: arXiv
Year: 2023
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Two key questions in cardiac image analysis are to assess the anatomy and motion of the heart from images; and to understand how they are associated with non-imaging clinical factors such as gender, age and diseases. While the first question can often be addressed by image segmentation and motion tracking algorithms, our capability to model and to answer the second question is still limited. In this work, we propose a novel conditional generative model to describe the 4D spatio-temporal anatomy of the heart and its interaction with non-imaging clinical factors. The clinical factors are integrated as the conditions of the generative modelling, which allows us to investigate how these factors influence the cardiac anatomy. We evaluate the model performance in mainly two tasks, anatomical sequence completion and sequence generation. The model achieves a high performance in anatomical sequence completion, comparable to or outperforming other state-of-the-art generative models. In terms of sequence generation, given clinical conditions, the model can generate realistic synthetic 4D sequential anatomies that share similar distributions with the real data.
description: Accepted by IEEE Transactions on Medical Imaging
Vanguardia Obrera, 85, año X
Creators: name: PCE(ML)
Publisher: name: Zenodo
Year: 1974
Subjects: pce(ml)
vanguardia obrera

description: Órgano de expresión del Partido Comunista de España (M-L). Artículos principales que contiene: Viva el 14 de abril republicano. Abajo la monarquías Borbónica aliada del fascismo. La lucha reivindicativa de la clase obrera. Carrillo y la Iglesia. La verdad sobre la llamada "Guerra de la leche". Contra el hipercriticismo. ¿Revisionismo o Marxismo-Leninismo?
Finite Element Integration on GPUs
Creators: name: Knepley, Matthew G.
name: Terrel, Andy R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Software (cs.MS)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: G.4; G.1.8

description: We present a novel finite element integration method for low order elements on GPUs. We achieve more than 100GF for element integration on first order discretizations of both the Laplacian and Elasticity operators.
description: 16 pages, 3 figures
The Fulde-Ferrell-Larkin-Ovchinnikov states for the d-wave superconductor in the two-dimensional orthorhombic lattice
Creators: name: Liu, S. L.
name: Zhou, Tao
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state of a two-dimensional (2D) orthorhombic lattice superconductor is studied based on the Bogoliubov-de-Gennes equations. It is illustrated that the 2D FFLO state is suppressed and only one-dimensional (1D) stripe state is stable. The stripe changes its orientation with the increasing Zeeman field. There exists a crossover region where the gap structure has some local 2D features. These results are significantly different from those of the tetragonal lattice system. The local density of states is also studied which can be checked and compared with experiments in future.
description: 6 pages, 6 figures
Embracing the (un) desired : disability, environment, and citizenship in Laura Aguilar’s photographs
Creators: name: Salcido, Karina Alejandra
Publisher: name: The University of Texas at Austin
Year: 2021
Subjects: Laura Aguilar
Disability
Chicanx Studies
Latinx Studies
Photography
Deserts

description: This thesis focuses on Chicana photographer Laura Aguilar and the role disability had on her artistic practice. My analysis of Aguilar’s work focuses on several images from Aguilar’s Nature Self-Portrait (1996-2007) and Grounded (1996-2007) series, and three photographs titled Three Eagles Flying (1993), Access + Opportunity= Success (1993), and Will Work For #4 (1993). I approach these images through a disability studies framework of the body-mind to emphasize the influence of Aguilar’s non-normative identity on her photography. Throughout my analysis, I find that her devalued position as a disabled, poor, queer Chicana is a source of knowledge for her visualizations of exclusion and discrimination of minorities. I expand on conversations surrounding her nude self-portraits in nature by discussing the ontological relationship between Aguilar and the American Southwest deserts and the care work she established. My thesis is based on disability and is structured by the diverse manifestations of Aguilar’s exploration of her non-normative body-mind
title: Crafting Soap With Fresh Orange And Lemon Peels Using Cold Process Method
title: Kementerian Hukum dan Ham R.I. Direktorat Jenderal Hak Kekayaan Intelektual
titleType: AlternativeTitle
Creators: name: Kezia Theofilia Kastawira
name: Erverenz Liem Darmawan
name: Norbertus Krisnu Prabowo
Publisher: name: Kementerian Hukum dan Ham R.I. Direktorat Jenderal Hak Kekayaan Intelektual
Year: 2023
Subjects: HAKI
HKI
sabun
cold process
SPK SMAK PENABUR KELAPA GADING
PENABUR
BPK PENABUR
STEM EDUCATION
LUARAN PENELITIAN
Hak Cipta

description: Kementerian Hukum dan Ham R.I. Direktorat Jenderal Hak Kekayaan Intelektual Nomor Sertifikat 000557674 (EC002023124719)
Words into worlds
Creators: name: Raker, Cecelia Anne
Publisher: name: The University of Texas at Austin
Year: 2020
Subjects: Writing process
Revision process
Bog butter
Webbed hands
Good country
Lyrical language
Writing craft
Language physicalities
Language and story
Language and character
Language and trauma

description: This thesis will articulate the ways I use words to build worlds, channeling my love of lyrical language into sustainable craft practices by mapping out a cycle of tools I use in making my work. I will investigate how my own experiences of conflict and code-switching teach me to pay attention to language as a basis for story and character. Using examples from my plays Bog Butter and Webbed Hands and my opera Good Country (with cameos by the other work I’ve made during graduate school), I will chart how the meanings and physicalities of language can teach us the values, tensions, and potential stories latent in a fictional world. I’ll examine how I’ve used these insights in generative writing and in the revision process. And I will marvel at how clarifying my relationship to trauma and language has helped me more confidently trust myself as an artist and as a human
Five easy pieces on the Strait of Georgia - reflections on the historical geography of the North Salish Sea
Creators: name: Stewart, Howard MacDonald
Publisher: name: University of British Columbia
Year: 2014

description: This study presents five parallel, interwoven histories of evolving relations between humans and the rest of nature around the Strait of Georgia or North Salish Sea between the 1850s and the 1980s. Together they comprise a complex but coherent portrait of Canada’s most heavily populated coastal zone. Home to about 10% of Canada’s contemporary population, the region defined by this inland sea has been greatly influenced by its relations with the Strait, which is itself the focus of a number of escalating struggles between stakeholders. This study was motivated by a conviction that understanding this region and the sea at the centre of it, the struggles and their stakeholders, requires understanding of at least these five key elements of the Strait’s modern history. Drawing on a range of archival and secondary sources, the study depicts the Strait in relation to human movement, the Strait as a locus for colonial dispossession of indigenous people, the Strait as a multi-faceted resource mine, the Strait as a valuable waste dump and the Strait as a place for recreation / re-creation. Each of these five dimensions of the Strait’s history was most prominent at a different point in the overall period considered and constantly changing relations among the five narratives are an important focus of the analysis. The evolving roles of governance, science, cultural representation and conservationism / environmentalism are considered throughout. The only common element linking the five narratives, apart from the Strait itself, is a pervasive, well-founded fear of loss – fear of a dangerous sea or fear of losing access to the marine highway, fear of losing the Strait as indigenous patrimony or as a colonial entitlement, fear of losing its rich terrestrial and marine resources, fear of losing waste dumping privileges, fear of losing the Strait as recreational space. The study concludes with a brief consideration of the five narratives in the 21st century, their contemporary interactions and their links with the histories considered in this study.
Ultrapure Multilayer Graphene in Bromine Intercalated Graphite
Creators: name: Hwang, J.
name: Carbotte, J. P.
name: Tongay, S.
name: Hebard, A. F.
name: Tanner, D. B.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the optical properties of bromine intercalated highly orientated pyrolytic graphite (Br-HOPG) and provide a novel interpretation of the data. We observe new absorption features below 620 meV which are absent in the absorption spectrum of graphite. Comparing our results with those of theoretical studies on graphite, single and bilayer graphene as well as recent optical studies of multilayer graphene, we conclude that Br-HOPG contains the signatures of ultrapure bilayer, single layer graphene, and graphite. The observed supermetallic conductivity of Br-HOPG is identified with the presence of very high mobility (~ 121,000 cm2V-1s-1 at room temperature and at very high carrier density) multilayer graphene components in our sample. This could provide a new avenue for single and multilayer graphene research.
description: 5 pages, 3 figures
Full Counting Statistics of Charge in Chaotic Many-body Quantum Systems
Creators: name: McCulloch, Ewan
name: De Nardis, Jacopo
name: Gopalakrishnan, Sarang
name: Vasseur, Romain
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the full counting statistics of charge transport in $U(1)$-symmetric random unitary circuits. We consider an initial mixed state prepared with a chemical potential imbalance between the left and right halves of the system, and study the fluctuations of the charge transferred across the central bond in typical circuits. Using an effective replica statistical mechanics model and a mapping onto an emergent classical stochastic process valid at large onsite Hilbert space dimension, we show that charge transfer fluctuations approach those of the symmetric exclusion process at long times, with subleading $t^{-1/2}$ quantum corrections. We discuss our results in the context of fluctuating hydrodynamics and macroscopic fluctuation theory of classical non-equilibrium systems, and check our predictions against direct matrix-product state calculations.
description: 5 pages, 2 figures, 9 page supplementary
Rethinking Pre-Service Language Teacher Education in the Global Era: A Focus on Teachers’ Core Competencies at the Local Level in South Korea
Creators: name: Whitehead, George E.
Publisher: name: University of Leicester
Year: 2022
Subjects: Uncategorized

description: This exploratory qualitative study examines the core competencies (knowledge, skills, and abilities) that Korean in-service public secondary English teachers need in their job, the major factors that contributed to the growth and development of these core competencies, and how pre-service teacher education programmes can be better designed to nurture teacher-learners’ core competencies and better prepare them for an in-service role. Data were collected through semi-structured interviews with 15 in-service English teachers and 15 English teacher educators, recorded video observations of 10 in-service teacher participants’ classes, and follow-up interviews with in-service teacher participants. The findings suggest that Korean in-service public secondary English teachers’ core competencies consist of an integrative ensemble of pedagogical, administrative, and self-related knowledge, skills, and abilities. The factors that were perceived as playing the largest role in the development of these core competencies included: 1) participation in practical courses, workshops, and lectures; 2) interaction with knowledgeable peers; 3) lesson observation and feedback; 4) practicum and teaching experiences; 5) self-study; and 6) reflection. In addition to having these factors integrated into pre-service teacher education programmes, in-service teachers also indicated that programmes could be improved by placing a focus on practice over theory, providing contextually relevant and realistic content and examples, involving teacher-learners in a longer practicum, incorporating readiness assessments from in-service teachers, providing more interaction with in-service teachers, and reconsidering the composition of teacher educator faculty. The findings of this study have important implications for various stakeholders in teacher education globally as they highlight the importance of considering what teachers need at the local level. Furthermore, the core competency conceptual framework, reported key contributing development factors, and suggestions for pre-service teacher education programmes provide new pathways for teacher education which can help foster teachers who are better prepared for the profession in South Korea and beyond.
Enhancement of broadband entangled two-photon absorption by resonant spectral phase flips
Creators: name: Li, Baihong
name: Hofmann, Holger F.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Broadband energy-time entanglement can be used to enhance the rate of two-photon absorption (TPA) by combining a precise two-photon resonance with a very short coincidence time. Because of this short coincidence time, broadband TPA is not sensitive to the spectrum of intermediate levels, making it the optimal choice when the intermediate transitions are entirely virtual. In the case of distinct intermediate resonances, it is possible to enhance TPA by introducing a phase dispersion that matches the intermediate resonances. Here, we consider the effects of a phase flip in the single photon spectrum, where the phases of all frequencies above a certain frequency are shifted by half a wavelength relative to the frequencies below this frequency. The frequency at which the phase is flipped can then be scanned to reveal the position of intermediate resonances. We find that a resonant phase flip maximizes the contributions of the asymmetric imaginary part of the dispersion that characterizes a typical resonance, resulting in a considerable enhancement of the TPA rate. Due to the bosonic symmetry of TPA, the enhancement is strongest when the resonance occurs when the frequency difference of the two photons is much higher than the linewidth of the resonance. Our results indicate that broadband entangled TPA with spectral phase flips may be suitable for phase-sensitive spectroscopy at the lower end of the spectrum where direct photon detection is difficult.
description: 10 pages,6 figures