cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Social Media Usage for Academic Purpose: A Systematic Literature Review 2010 to 2020.
Creators: name: Ojukwu, Njideka-Nwawih Charlotte
name: Mutula, Stephen
name: Saliu,
Publisher: name: The Journal of Social Media for Learning
Year: 2021

description: The purpose of the study is to provide an up to date estimate global usage of social media for academic purpose between 2010 and 2020. The researcher applied systematic literature review, to explore global literatures on social media. 76 empirical studies relating to social media within 2010 to 2020, out of which 35 literatures that met identified minimum standards were utilized for this study. Proceedings of the findings were documented and discussed in thematic analysis. Findings revealed numerous specific SM tools such as Twitter, Facebook, Blogging, Orkut, Badoo, Sky Blog, Google, LinkedIn, Whatsapp, Skype, My Space, Yahoo messenger, zoom, Academic Community Blogs, online article, bookmaking wikis, lib website for academic and social activities, SkyDrive Google group used by students. The purpose of SM usage identified as a determinant factor to academics and the impacts of social media to learning. Study further identified challenges experienced that may affect the use of SM for academic purpose. Research limitations: The article reports findings on SM usage were limited to only empirical research literatures focused on social media and students. The wider scope considered global literatures. However, resources like books and other information resources were not included in this study. Practical implications: The study finding have practical implications in that they can be used as decision and policy model, or a developmental plan in education system to tackle pandemic or related issue in the future considering the 2020 pandemic experience on education system. Social Media use for education purpose can be redesigned into the model of learning in higher institutions. Originality/ value: Use of social media in learning is gathering momentum among researchers globally. The purpose of SM use for academic purpose has not been explored in literature review approach. Finding of the study will, therefore, inform researchers, academics and institution decision makers on possibility of SM tools for academic purpose.
description: The Journal of Social Media for Learning, Vol 2 No 1 (2021): The Journal of Social Media for Learning
PO 40 - LEFT TO RIGH TRANSMEDIASTINAL GUNSHOT WOUND – A CASE REPORT
Creators: name: Jardim Silva A
name: Santos, A.
name: F, Valente
name: Pereira A
name: Carrilho A
Publisher: name: Revista da Sociedade Portuguesa de Anestesiologia
Year: 2023

description: .
description: Revista da Sociedade Portuguesa de Anestesiologia, Vol. 31 N.º 1 (2022): SUPLEMENTO Revista da Sociedade Portuguesa de Anestesiologia
Spectroscopic Determination of the Faint End of the Luminosity Function in the Nearby Galaxy Clusters A2199 and Virgo
Creators: name: Rines, Kenneth
name: Geller, Margaret J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report a new determination of the faint end of the galaxy luminosity function in the nearby clusters Virgo and Abell 2199 using data from SDSS and the Hectospec multifiber spectrograph on the MMT. The luminosity function of A2199 is consistent with a single Schechter function to M_r=-15.6 + 5 log h_70 with a faint-end slope of alpha=-1.13+/-0.07. The LF in Virgo extends to M_r=-13.5= M^*+8 and has a slope of alpha=-1.28+/-0.06. The red sequence of cluster members is prominent in both clusters, and almost no cluster galaxies are redder than this sequence. We show that selecting objects on the red sequence and blueward produces a steeply rising faint-end. A large fraction of photometric red-sequence galaxies lie behind the cluster. We compare our results to previous estimates and find poor agreement with estimates based on statistical background subtraction but good agreement with estimates based on photometric membership classifications (e.g., colors, morphology, surface brightness). We conclude that spectroscopic data are critical for estimating the faint end of the luminosity function in clusters. The faint-end slope we find is consistent with values found for field galaxies, weakening any argument for environmental evolution in the relative abundance of dwarf galaxies. However, dwarf galaxies in clusters are significantly redder than field galaxies of similar luminosity or mass, indicating that star formation processes in dwarfs do depend on environment.
description: to appear in AJ, includes tables of probable and spectroscopically confirmed Virgo cluster members
'In it together'
Creators: name: Parson, Vanessa
name: Bain, Hannah
Publisher: name: The Journal of Social Media for Learning
Year: 2021

description: Facebook has the potential to be used as an educational tool that supports the formation of a cohort identity, improving engagement which can potentially positively impact on retention and performance. An in-house initiative created staff-maintained Facebook groups for each cohort within the Psychology suite of programmes, utilising staff engagement to add an additional learning resource for students during the duration of their course. The groups were positively received by 99% of students, showing that students immensely valued the additional learning resource available to them. Thematic analysis revealed key positive themes sense of community and support, ease of communication and the breaking down of barriers between staff and students; key negative themes involved concern around the potential for students to miss out on a valuable resource. The staff-maintained Facebook groups achieved their aim of creating a socially-oriented learning space that fostered a sense of community and cohort identity; the groups have been integrated into the permanent provision within the School of Psychology. This type of initiative has the potential to improve engagement, performance and retention in a world where blended learning is increasingly utilised.
description: The Journal of Social Media for Learning, Vol 2 No 1 (2021): The Journal of Social Media for Learning
Beam energy dependence of squeeze-out effect on the directed and elliptic flow in Au+Au collisions at high baryon density region
Creators: name: Zhang, Chao
name: Chen, Jiamin
name: Luo, Xiaofeng
name: Liu, Feng
name: Nara, Yasushi
Publisher: name: arXiv
Year: 2018
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present a detailed analysis of the beam energy dependence of the mechanisms for the generation of directed and elliptic flows in Au+Au collisions focusing on the role of hadronic rescattering and spectator shadowing within a microscopic transport model JAM with different equation of state. A systematic study of the beam energy dependence is performed for Au+Au collisions at $\sqrt{s_{NN}} =2.3 - 62.4$ GeV. The transition of the dynamical origin of the directed flow is observed. We find that the initial Glauber type nucleon-nucleon collisions generate negative $v_1$ for nucleons at midrapidity due to the presence of spectator matter, and this negative nucleon $v_1$ is turned to be positive by the meson-baryon interactions at the beam energy region of $\sqrt{s_{NN}} < 30$ GeV. In contrast, above 30 GeV there is no spectator shadowing at midrapidity, and initial nucleon-nucleon collisions do not generate directed flow, but subsequent rescatterings among produced particles generate negative $v_1$ for nucleons. It is demonstrated that negative pion-directed flows are mostly generated by the interaction with the spectator matter. It is also shown that the squeeze-out effect is largely suppressed in the case of softening, which leads to the enhancement of elliptic flow around $\sqrt{s_{NN}}=5-7$ GeV. The elliptic flow at midrapidity above 10 GeV is not influenced by the squeeze-out due to spectator matter, while its effect is seen at the forward rapidity range of $y/y_\mathrm{c.m.}>0.5$, which decreases as beam energy increases.
description: 14 pages, 17 figures
Detecting Confined and Deconfined Spinons in Dynamical Quantum Simulations
Creators: name: Li, Qiaoyi
name: Cui, Jian
name: Li, Wei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Dynamical spin-structure factor (DSF) contains fingerprint information of collective excitations in interacting quantum spin systems. In solid state experiments, DSF can be measured through neutron scatterings. However, it is in general challenging to compute the spectral properties accurately via many-body simulations. Currently, quantum simulation and computation constitute a thriving research field, which are believed to provide a very promising platform for simulating quantum many-body systems. In this work, we establish a link between the many-body dynamics and quantum simulations by studying the non-equilibrium DSF (nDSF) measured on direct product states, which are accessible in contemporary quantum simulators with Rydberg atoms, superconducting qubits, etc. Based on the many-body calculations of transverse field Ising chains, we find the nDSF can be used to sensitively probe the multi-spinon continua associated with the two-spinon creation and the spinon-antispinon process, etc. Moreover, we further demonstrate that the low-energy spinons can be confined -- forming spinon bound states -- under a finite longitudinal field. Our results pave the way of quantum simulation and manipulation of fractional excitations in highly-entangled quantum many-body systems.
description: 13 pages, 8 figures
A case study using Instagram to create an online learning environment
Creators: name: Santarossa, Sara
name: Coyne, Paige
name: Woodruff,
Publisher: name: The Journal of Social Media for Learning
Year: 2021

description: Although there is a high prevalence of personal distractions/distractors (e.g., social media) in higher education, only a few instructors are implementing them for educational purposes. The present case study explored how Instagram engaged first year students in a Kinesiology class by utilizing hashtag data. Results suggested that greater than half of the class engaged in the online learning environment. Text analysis revealed nearly half of the data was categorized as good feelings, and Instagram posts revealed that students applied course concepts and met learning outcomes. Social network analysis revealed a lack of discussion/communication amongst students, however, conversation appeared to be centralized around the opinion leader (i.e., the instructor), and extended beyond those registered in the class. This case study provided an insight into how distractors, such as social media, may be used to elicit agency, deep learning, reflection, and critical thinking among students in higher education.
description: The Journal of Social Media for Learning, Vol 2 No 1 (2021): The Journal of Social Media for Learning
Kernel Selection for Convergence and Efficiency in Markov Chain Monte Carol
Creators: name: Potter, Christopher C. J.
Publisher: name: Carnegie Mellon University
Year: 2013
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Markov Chain Monte Carlo (MCMC) is a technique for sampling from a target probability distribution, and has risen in importance as faster computing hardware has made possible the exploration of hitherto difficult distributions. Unfortunately, this powerful technique is often misapplied by poor selection of transition kernel for the Markov chain that is generated by the simulation. Some kernels are used without being checked against the convergence requirements for MCMC (total balance and ergodicity), but in this work we prove the existence of a simple proxy for total balance that is not as demanding as detailed balance, the most widely used standard. We show that, for discrete-state MCMC, that if a transition kernel is equivalent when it is “reversed” and applied to data which is also “reversed”, then it satisfies total balance. We go on to prove that the sequential single-variable update Metropolis kernel, where variables are simply updated in order, does indeed satisfy total balance for many discrete target distributions, such as the Ising model with uniform exchange constant. Also, two well-known papers by Gelman, Roberts, and Gilks (GRG)[1, 2] have proposed the application of the results of an interesting mathematical proof to the realistic optimization of Markov Chain Monte Carlo computer simulations. In particular, they advocated tuning the simulation parameters to select an acceptance ratio of 0.234 . In this paper, we point out that although the proof is valid, its result’s application to practical computations is not advisable, as the simulation algorithm considered in the proof is so inefficient that it produces very poor results under all circumstances. The algorithm used by Gelman, Roberts, and Gilks is also shown to introduce subtle time-dependent correlations into the simulation of intrinsically independent variables. These correlations are of particular interest since they will be present in all simulations that use multi-dimensional MCMC moves.
Restricted space ab initio models for double ionization by strong laser pulses
Creators: name: Efimov, Dmitry K.
name: Maksymov, Artur
name: Prauzner-Bechcicki, Jakub S.
name: Thiede, Jan H.
name: Eckhardt, Bruno
name: Chacón, Alexis
name: Lewenstein, Maciej
name: Zakrzewski, Jakub
Publisher: name: arXiv
Year: 2018
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Double electron ionisation process occurs when an intense laser pulse interacts with atoms or molecules. Exact {\it ab initio} numerical simulation of such a situation is extremely computer resources demanding, thus often one is forced to apply reduced dimensionality models to get insight into the physics of the process. The performance of several algorithms for simulating double electron ionization by strong femtosecond laser pulses are studied. The obtained ionization yields and the momentum distributions of the released electrons are compared, and the effects of the model dimensionality on the ionization dynamics discussed.
Casimir forces between beads on strings
Creators: name: D'Hoker, Eric
name: Sikivie, Pierre
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a string with uniform energy density and tension and with a number of pointlike masses attached at fixed interdistances. We evaluate the effective interaction forces between these masses induced by the quantum fluctuations of the string. For interdistances large compared to the thickness of the string and small compared to the total length, these forces are universal and attractive and fall off, for large distances as $1/r^3$ and for small distances as $1/r$. The attractive nature of these forces creates an instability under which masses added to the string tend to aggregate.
description: 9 pages, TEX, UCLA/92/TEP/31 and UFIFT-HEP-92-33
Social Media Usage and Coping Strategies among University of Ghana Undergraduate Students
Creators: name: Bawa, Joseph
name: Odame, Ebenezer Darkwah
name: Kwarteng, Abdul Hamid
name: Ayim, Anthony
name: Kolugu,
Publisher: name: The Journal of Social Media for Learning
Year: 2021

description: The emergence of the internet has propelled the influence of social media among tertiary students all over the world. This study investigates the effect of social media on the academic lives of University of Ghana undergraduate students as well as their coping strategies in dealing with the social media pressures. By relying on a mixed method approach and a sample of 420 students from the University of Ghana, the study shows that WhatsApp is the mostly used social media platform among University of Ghana students for academic purposes. Also, the study showed that social media platforms are often used to communicate with their family and friends rather than for academic purposes. While the use of social media positively impacted on academic performance through research, the study also showed that it impacts negatively on academic lives given its addictive nature. Thus, to cope with this effect, the study revealed that respondents prefer to put off their mobile data or WiFi when studying. It is recommended that the University of Ghana must embark on sensitization to educate students on how to balance their studies with social media usage so that they can use the internet productively.
description: The Journal of Social Media for Learning, Vol 2 No 1 (2021): The Journal of Social Media for Learning
Volume average regularization for the Wheeler-DeWitt equation
Creators: name: Feng, Justin C.
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this article, I present a volume average regularization for the second functional derivative operator that appears in the metric-basis Wheeler-DeWitt equation. Naively, the second functional derivative operator in the Wheeler-DeWitt equation is infinite, since it contains terms with a factor of a delta function or derivatives of the delta function. More precisely, the second functional derivative contains terms that are only well defined as a distribution---these terms only yield meaningful results when they appear within an integral. The second functional derivative may, therefore, be regularized by performing an integral average of the distributional terms over some finite volume; I argue that such a regularization is appropriate if one regards quantum general relativity (from which the Wheeler-DeWitt equation may be derived) to be the low-energy effective field theory of a full theory of quantum gravity. I also show that a volume average regularization can be viewed as a natural generalization of the same-variable second partial derivative for an ordinary multivariable function. Using the regularized second functional derivative operator, I construct an approximate solution to the Wheeler-DeWitt equation in the low-curvature, long-distance limit.
description: 22 pages. Revised to match published version. Note added in proof containing additional references
A BRST Operator for non-critical W-Strings
Creators: name: Bershadsky, M.
name: Lerche, W.
name: Nemeschansky, D.
name: Warner, N. P.
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct the BRST operator for non-critical $W_3$-strings and discuss the tachyon-like spectrum. For $N$-punctured spheres with $N \leq 5$ we briefly describe a formal definition of the integral over $W_3$-moduli space.
description: 12p, CERN-TH.6582/92, HUTP-A034/92, USC-92/015
Giant Rashba splitting of quasi-1D surface states on Bi/InAs(110)-(2$\times$1)
Creators: name: Nakamura, T.
name: Ohtsubo, Y.
name: Yamashita, Y.
name: Ideta, S.
name: Tanaka, K.
name: Yaji, K.
name: Harasawa, A.
name: Shin, S.
name: Komori, F.
name: Yukawa, R.
name: Horiba, K.
name: Kumigashira, H.
name: Kimura, S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Electronic states on the Bi/InAs(110)-(2$\times$1) surface and its spin-polarized structure are revealed by angle-resolved photoelectron spectroscopy (ARPES), spin-resolved ARPES, and density-functional-theory calculation. The surface state showed quasi-one-dimensional (Q1D) dispersion and a nearly metallic character; the top of the hole-like surface band is just below the Fermi level. The size of the Rashba parameter ($α_{\rm R}$) reached quite a large value ($\sim$5.5 eVÅ). The present result would provide a fertile playground for further studies of the exotic electronic phenomena in 1D or Q1D systems with the spin-split electronic states as well as for advanced spintronic devices.
description: 8 pages (double column), 7 figures and 1 table
Onsager's conjecture and anomalous dissipation on domains with boundary
Creators: name: Drivas, Theodore D.
name: Nguyen, Huy Q.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Analysis of PDEs (math.AP)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We give a localized regularity condition for energy conservation of weak solutions of the Euler equations on a domain $Ω\subset \mathbb{R}^d$, $d\ge 2$, with boundary. In the bulk of fluid, we assume Besov regularity of the velocity $u\in L^3(0,T;B_{3}^{1/3, c_0})$. On an arbitrary thin neighborhood of the boundary, we assume boundedness of velocity and pressure and, at the boundary, we assume continuity of wall-normal velocity. We also prove two theorems which establish that the global viscous dissipation vanishes in the inviscid limit for Leray--Hopf solutions $u^ν$ of the Navier-Stokes equations under the similar assumptions, but holding uniformly in a thin boundary layer of width $O(ν^{\min\{1,\frac{1}{2(1-σ)}\}})$ when $u\in L^3(0, T; B_3^{σ, c_0})$ in the interior for any $σ\in [1/3,1]$. The first theorem assumes continuity of the velocity in the boundary layer whereas the second assumes a condition on the vanishing of energy dissipation within the layer. In both cases, strong $L^3_tL^3_{x,loc}$ convergence holds to a weak solution of the Euler equations. Finally, if a strong Euler solution exists in the background, we show that equicontinuity at the boundary within a $O(ν)$ strip alone suffices to conclude the absence of anomalous dissipation.
description: 23 pages, 1 figure. Theorem 3 added in version 2. Sharpened the interior regularity assumption on the velocity in Theorems 1,2 and 3 in version 3
Kernel and Moment Based Prediction and Planning : Applications to Robotics and Natural Language Processing
Creators: name: Marinho, Zita
Publisher: name: Carnegie Mellon University
Year: 2018
Subjects: subject: 80101 Adaptive Agents and Intelligent Robotics
subject: FOS: Computer and information sciences

description: This thesis focuses on moment and kernel-based methods for applications in Robotics and Natural Language Processing. Kernel and moment-based learning leverage information about correlated data that allow the design of compact representations and efficient learning algorithms. We explore kernel algorithms for planning by leveraging inherently continuous properties of reproducing kernel Hilbert spaces. We introduce a kernel based robot motion planner based on gradient optimization, in a space of smooth trajectories, a reproducing kernel Hilbert space. We further study a kernel-based approach in the context of prediction, for learning a generative model, and in the context of planning for learning to interact with a controlled process. Our work on moment-based learning can be decomposed into two main branches: spectral techniques and anchor-based methods. Spectral learning describes a more expressive model, which implicitly uses hidden state variables. We use it as a means to obtain a more expressive predictive model that we can use to learn to control an interactive agent, in the context of reinforcement learning. We propose a combination of predictive representations with deep reinforcement learning to produce a recurrent network that is able to learn continuous policies under partial observability. We introduce an efficient end-to-end learning algorithm that is able to maximize cumulative reward while minimizing prediction error. We apply this approach to several continuous observation and action environments. Anchor learning, on the other hand, provides an explicit form of representing state variables, by relating states to unambiguous observations. We rely on anchor-based techniques to provide a form of explicitly recovering the model parameters, in particular when states have a discrete representation such as in many Natural Language Processing tasks. This family of methods provides an easier form of integrating supervised information during the learning process. We apply anchor-based algorithms on word labelling tasks in Natural Language Processing, namely semi-supervised part-of-speech tagging where annotations are learned from a large amount of raw text and a small annotated corpus.
Failed Futurity: Performing Abortion in Merrill Denison’s Marsh Hay
Creators: name: Wright, Kailin
Publisher: name: Canadian Literature
Year: 2017

description: Merrill Denison’s Marsh Hay culminates with the “piercing scream” of a pregnant woman as she intentionally miscarries. Originally published in 1923, the play did not see the stage until over fifty years later. This unique delay in production was likely due to the play’s sensitive themes, namely, pregnancy out of wedlock and abortion. Most critics focus on Marsh Hay’s dramatization of rural poverty and overlook the abortion. Ultimately, the play’s depiction of poverty and lost pregnancy are mutually constitutive because abortion functions as a symbol and symptom of the family’s failed futurity. Denison uses lost pregnancy to foretell the demise not only of an archetypal rural family but also of rural Canada if audiences do not accept pregnancy out of wedlock. I argue that Denison’s progressive conception of illegitimate pregnancy is constrained by the play’s use of abortion as a punishment for the community’s refusal to accept pregnancy out of wedlock.
description: Canadian Literature, No 232 (2017): Meanwhile, Home
Fluctuation-induced Néel and Bloch skyrmions at topological insulator surfaces
Creators: name: Nogueira, Flavio S.
name: Eremin, Ilya
name: Katmis, Ferhat
name: Moodera, Jagadeesh
name: Brink, Jeroen van den
name: Kravchuk, Volodymyr
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Ferromagnets in contact with a topological insulator have become appealing candidates for spintronics due to the presence of Dirac surface states with spin-momentum locking. Because of this bilayer Bi$_2$Se$_3$-EuS structures, for instance, show a finite magnetization at the interface at temperatures well exceeding the Curie temperature of bulk EuS. Here we determine theoretically the effective magnetic interactions at a topological insulator-ferromagnet interface {\it above} the magnetic ordering temperature. We show that by integrating out the Dirac fermion fluctuations an effective Dzyaloshinskii-Moriya interaction and magnetic charging interaction emerge. As a result individual magnetic skyrmions and extended skyrmion lattices can form at interfaces of ferromagnets and topological insulators, the first indications of which have been very recently observed experimentally.
description: LaTex, 11 pages including supplemental information, 4 figures; v2: revised version accepted for publication in PRB RC; v3: Typos corrected, additional affiliation and grant acknowledgment included. Matches published version
Quantum fields, non-locality and quantum group symmetries
Creators: name: Arzano, Michele
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the action of space-time symmetries on quantum fields in the presence of small departures from locality determined by dynamical gravity. It is shown that, under such relaxation of locality, the symmetries of the theory cannot be described within the usual framework of Lie algebras but rather in terms of non-co-commutative Hopf algebras or "quantum groups". Similar "quantizations" of space-time symmetries are expected to emerge in the low-energy limit of certain quantum gravity models and have been used to describe the symmetries of various non-commutative space-times. Our result provides an intuitive characterization of the mechanism that could lead to the emergence of deformed co-products in models of quantum relativistic symmetries.
description: 12 pages, RevTeX, minor revisions, published version
title: PP_1961-1962_Esquisse d'entraînement_Un atelier de sculpteur
Creators: name: Panerai, Philippe
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2024
Subjects: subject: architecture
subject: beaux-arts
subject: Écoles des beaux-arts
subject: enseignement
subject: Atelier Arretche

description: Travaux scolaires de Philippe Panerai à l'École des beaux-arts.
The Geography of Farmworker Health in Colorado: An Examination of Disease Clusters and Healthcare Accessibility
Creators: name: Deka, Mark A.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Background: Known by some as the “invisible” people because of their precarious work and low social status, migratory and seasonal farmworkers (MSFW) are a critical and underappreciated component to the agriculture industry in the United States. Despite advances in knowledge about the health needs of this population, identifying geographies of high-risk remains a challenging task for community health workers and farmworker advocacy organizations. Methods: Using patient encounter data (2011–2015) from regional Community and Migrant Health Centers (C/MHC), this study investigates the geography of farmworker chronic disease (diabetes, obesity, hypertension) and associated risk factors (anxiety, stress, depression, tobacco use) in Northeastern Colorado through the lens of Geographic Information Science (GIS). Results: Spatial scan statistics (SaTScan) identified disease cluster hot spots in 151 zip codes and chronic disease risk factor clusters in 44 zip codes. Additionally, 13487 farmworkers or 82% of the total population is found in zip codes designated as chronic disease hot spots, while 10,115 or 62% of the population reside in zip codes identified as risk factor hot spots. GIS-based Network Analysis determined that 1,269 farmworkers lived greater than 30 minutes from a C/MHC, or 7.7% of the total population in the study area (n = 16,419). Conclusions: The findings of this study confirm the need for geospatial analytics in farmworker population healthcare management. These methods, combined with multiple contextual and methodological perspectives, will inform appropriate outreach, research, and policy strategies, and further, serve to address the unique geographic challenges facing MSFW’s in Northeastern Colorado.
Investigations into the Role of Inter and Intra Strain Quorum Sensing in Pneumococcal Pathogenesis
Creators: name: Anagha  Kadam
Publisher: name: Carnegie Mellon University
Year: 2017
Subjects: subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: Streptococcus pneumoniae is the leading cause of pediatric morbidity and mortality worldwide. The rich genomic diversity among strains of pneumococci contributes to varied phenotypes exhibited by strains such as propensity to cause disease, colonization capabilities, and responses to antibiotics and vaccines. In this thesis, I explore the role of genes acquired by gene transfer on the ability of pneumococcus to cause disease in single and multi-strain infections. I describe my work on the identification and molecular characterization of a novel quorum sensing system comprising a transcription regulator and peptide (TprA2/PhrA2). This system is unique to the PMEN1 lineage, a group of pandemic and multi-drug resistant pneumococcal strains. I demonstrate the detailed mechanism of regulation of this peptide-regulator pair and its ability to control a downstream lanthionine-containing peptide. Through in vivo studies I observe that the TprA2 regulator acts to promote commensalism over tissue dissemination. In addition, I show that the downstream lanthionine-containing peptide is a novel virulence determinant. My findings extend beyond this specific cell-cell communication system, since PhrA2 unidirectionally influences gene expression of a second quorum sensing system, TprA/PhrA, widespread across the pneumococcal species. I participated in studies that conclusively demonstrate the role of TprA/PhrA as a potent virulence determinant, and I show that the PMEN1-unique peptide PhrA2 can control gene expression of TprA/PhrA in a non-PMEN1 strain. These data open the door to the potential role for PMEN1 strains in modifying the virulence potential of other strains in multi-strain infections. In summary, my findings suggest that a horizontally acquired PMEN1-unique genomic element has the ability to modify regulatory circuits and fine tune the net regulation of multiple downstream effectors via intra- and inter-strain communication in single and multi strain infections.
Symmetry-broken crystal structure of elemental boron at low temperature
Creators: name: Widom, M.
name: Mihalkovic, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The crystal structure of boron is unique among chemical elements, highly complex, and imperfectly known. Experimentalists report the beta-rhombohedral (black) form is stable over all temperatures from absolute zero to melting. However, early calculations found its energy to be greater than the energy of the alpha-rhombohedral (red) form, implying beta cannot be stable at low temperatures. Furthermore, beta exhibits partially occupied sites, seemingly in conflict with the thermodynamic requirement that entropy vanish at low temperature. Using electronic density functional theory methods and an extensive search of the configuration space we find a unique, energy minimizing pattern of occupied and vacant sites that can be stable at low temperatures but that breaks the beta-rhombohedral symmetry. Even lower energies occur within larger unit cells. Alternative configurations lie nearby in energy, allowing the entropy of partial occupancy to stabilize the beta-rhombohedral structure through a phase transition at moderate temperature.
description: 12 pages, 5 figures
Dynamical Localization in $\mathbb{Z}_2$ Lattice Gauge Theories
Creators: name: Smith, Adam
name: Knolle, Johannes
name: Moessner, Roderich
name: Kovrizhin, Dmitry L.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study quantum quenches in two-dimensional lattice gauge theories with fermions coupled to dynamical $\mathbb{Z}_2$ gauge fields. Through the identification of an extensive set of conserved quantities, we propose a generic mechanism of charge localization in the absence of quenched disorder both in the Hamiltonian and in the initial states. We provide diagnostics of this localization through a set of experimentally relevant dynamical measures, entanglement measures, as well as spectral properties of the model. One of the defining features of the models that we study is a binary nature of emergent disorder, related to $\mathbb{Z}_2$ degrees of freedom. This results in a qualitatively different behaviour in the strong disorder limit compared to typically studied models of localization. For example it gives rise to a possibility of a delocalization transition via a mechanism of quantum percolation in dimensions higher than 1D. We highlight the importance of our general phenomenology to questions related to dynamics of defects in Kitaev's toric code, and to quantum quenches in Hubbard models. While the simplest models we consider are effectively non-interacting, we also include interactions leading to many-body localization-like logarithmic entanglement growth. Finally, we consider effects of interactions that generate dynamics for conserved charges, which gives rise to only transient localization behaviour, or quasi-many-body-localization.
description: 19 pages (14 + appendices), 13 figures
КОРРУПЦИЯВИЙ ЖИНОЯТЧИЛИКНИ ОЛДИНИ ОЛИШ ЧОРАЛАРИ ҲАМДА УШБУ ЖИНОЯТЛАР УЧУН ЖАВОБГАРЛИК БЎЙИЧА ЖИНОЯТ КОДЕКСИНИ ТАКОМИЛЛАШТИРИШ МАСАЛАЛАРИ
Creators: name: Отабоев, Бобур
Publisher: name: Zenodo
Year: 2024

description: Ушбу мақолада коррупциявий жиноятларни олдини олиш чоралари ҳамда ушбу жиноятлар жавобгарлик масаласи ва шу сохада миллий қонунчиликни ривожлантириши масалаларига атрофлича тўхталиб ўтилган. Жиноят кодексини тегишли моддаларини такомиллаштириш масаласи муҳокама қилинган ва тегишли таклифлар берилган. Хорижий тажриба ёритилган.
"Coming Home" Through Music: Cree and Classical Music in Tomson Highway's Kiss of the Fur Queen
Creators: name: Olaveson, Heather
Publisher: name: Canadian Literature
Year: 2017

description: This article examines the purpose of music in Tomson Highway's Kiss of the Fur Queen by exploring its connection to the growth and development of the protagonist and musician Jeremiah Okimasis. In considering the growth of Jeremiah's character, I explore ways in which the novel's Bildungsroman structure is both exemplified and problematized by Highway's use of Cree and Classical musical aesthetics, and investigate the development of Native youth identity as well as a Cree cultural home. What is ultimately revealed is a trickster poetics at work in the text, as demonstrated by music's ability to lure characters into and out of cultural spaces of belonging while also functioning as an essential method of Cree cultural survival.
description: Canadian Literature, No 232 (2017): Meanwhile, Home
Application of Geo-informatics for Survey the Ephiphytic plants in Tad Sung Waterfall Forest Park, Kalasin Province
Creators: name: Narueset Prasertsri
Publisher: name: Faculyt of Informatics, Mahasarakham University
Year: 2021
Subjects: Species diversity
Epiphyte plants
Tat Sung waterfull forest park

description: Journal of Applied Informatics and Technology, 3, 1, 35-50
Application of the Geo-informatics to Survey GUTTIFERAE family plants in Khok Phak Kut and Pong Daeng National Forest, Maha Sarakham Province
Creators: name: Narueset Prasertsri
Publisher: name: Faculyt of Informatics, Mahasarakham University
Year: 2021
Subjects: Diversity of GUTTIFERAE
Khok Phak Kut and Pong Daeng National Forest

description: Journal of Applied Informatics and Technology, 3, 1, 51-62
Probing spin-phonon interactions in silicon carbide with Gaussian acoustics
Creators: name: Whiteley, Samuel J.
name: Wolfowicz, Gary
name: Anderson, Christopher P.
name: Bourassa, Alexandre
name: Ma, He
name: Ye, Meng
name: Koolstra, Gerwin
name: Satzinger, Kevin J.
name: Holt, Martin V.
name: Heremans, F. Joseph
name: Cleland, Andrew N.
name: Schuster, David I.
name: Galli, Giulia
name: Awschalom, David D.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Hybrid spin-mechanical systems provide a platform for integrating quantum registers and transducers. Efficient creation and control of such systems require a comprehensive understanding of the individual spin and mechanical components as well as their mutual interactions. Point defects in silicon carbide (SiC) offer long-lived, optically addressable spin registers in a wafer-scale material with low acoustic losses, making them natural candidates for integration with high quality factor mechanical resonators. Here, we show Gaussian focusing of a surface acoustic wave in SiC, characterized by a novel stroboscopic X-ray diffraction imaging technique, which delivers direct, strain amplitude information at nanoscale spatial resolution. Using ab initio calculations, we provide a more complete picture of spin-strain coupling for various defects in SiC with C3v symmetry. This reveals the importance of shear for future device engineering and enhanced spin-mechanical coupling. We demonstrate all-optical detection of acoustic paramagnetic resonance without microwave magnetic fields, relevant to sensing applications. Finally, we show mechanically driven Autler-Townes splittings and magnetically forbidden Rabi oscillations. These results offer a basis for full strain control of three-level spin systems.
description: 17 pages, 4 figures
The $η_6$ at LEP and TRISTAN
Creators: name: White, Alan R.
name: Knowles, Ian G.
name: Kang, Kyungsik
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The $η_6$ is a ``heavy axion'' remnant of dynamical electroweak symmetry breaking by a color sextet quark condensate. Electroweak scale color instanton interactions allow it to be both very massive and yet be responsible for Strong CP conservation in the color triplet quark sector. It may have been seen at LEP via its two-photon decay mode and at TRISTAN via its hadronic decay modes.
description: 11 pages, ANL-HEP-PR-93-4/BROWN-HET-872
Gate-defined electron-hole double dots in bilayer graphene
Creators: name: Banszerus, Luca
name: Frohn, Benedikt
name: Epping, Alexander
name: Neumaier, Daniel
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Stampfer, Christoph
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present gate-controlled single, double, and triple dot operation in electrostatically gapped bilayer graphene. Thanks to the recent advancements in sample fabrication, which include the encapsulation of bilayer graphene in hexagonal boron nitride and the use of graphite gates, it has become possible to electrostatically confine carriers in bilayer graphene and to completely pinch-off current through quantum dot devices. Here, we discuss the operation and characterization of electron-hole double dots. We show a remarkable degree of control of our device, which allows the implementation of two different gate-defined electron-hole double-dot systems with very similar energy scales. In the single dot regime, we extract excited state energies and investigate their evolution in a parallel magnetic field, which is in agreement with a Zeeman-spin-splitting expected for a g-factor of two.
description: 5 pages, 5 figures
A Quantum Anomaly For Rigid Particles
Creators: name: Govaerts, Jan
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Canonical quantisation of rigid particles is considered paying special attention to the restriction on phase space due to causal propagation. A mixed Lorentz-gravitational anomaly is found in the commutator of Lorentz boosts with world-line reparametrisations. The subspace of gauge invariant physical states is therefore not invariant under Lorentz transformations. The analysis applies for an arbitrary extrinsic curvature dependence with the exception of only one case to be studied separately. Consequences for rigid strings are also discussed.
description: (replaces previous unpritable version corrupted mailer) 12 pages (Plain TeX), DTP-92/37
title: ADCO, Sixième cartulaire de Saint-Étienne de Dijon (1662), Cart. 30 (G 133), 441 folios, f. 847
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Sixième cartulaire de Saint-Étienne de Dijon (1662), Archives départementales de la Côte-d'Or, Cart. 30 (G 133), 441 folios, f. 847, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Sixième cartulaire de Saint-Étienne de Dijon (1662), Archives départementales de la Côte-d'Or, Cart. 30 (G 133), 441 folios, f. 847, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Impact of Privacy Law on National Research Data Repositories in South Africa
Creators: name: Shozi, Nobubele Angel
Publisher: name: Zenodo
Year: 2019
Subjects: National Research Data Repository
Research Data Repository
South Africa
DIRISA
Repository
Data Repository

description: A number of countries around the world have instituted privacy laws that relate to how personal information and data is governed. These privacy related laws can have unintended effects on data repositories that institutional or even of national importance. The Data Intensive Research Initiative of South Africa (DIRISA) was established by the South African government to provide a national research data storage facility for South African researchers to have easy and trusted access to research data. DIRISA is currently piloting a national research data repository that is based on MetalNX and IRODS. The repository can be used by South African researcher to perform tasks such as uploading and downloading datasets that are annotated with metadata and/or has unique persistent identifiers. Most recently the South African government has instituted the Protection of Personal Information Act (POPI) act. The impact of the POPI act towards the national research data repositories in South Africa such as DIRISA need to be investigated to ensure that national research data repositories meet the requirements of privacy laws such as the POPI act. The purpose of this presentation is to present the findings on how South African National Research Data Repositories are meeting POPI act regulations.
Axial anomaly and magnetism of nuclear and quark matter
Creators: name: Son, D. T.
name: Stephanov, M. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We consider the response of the QCD ground state at finite baryon density to a strong magnetic field B. We point out the dominant role played by the coupling of neutral Goldstone bosons, such as pi^0, to the magnetic field via the axial triangle anomaly. We show that, in vacuum, above a value of B ~ m_pi^2/e, a metastable object appears - the pi^0 domain wall. Because of the axial anomaly, the wall carries a baryon number surface density proportional to B. As a result, for B ~ 10^{19} G a stack of parallel pi^0 domain walls is energetically more favorable than nuclear matter at the same density. Similarly, at higher densities, somewhat weaker magnetic fields of order B ~ 10^{17}-10^{18} G transform the color-superconducting ground state of QCD into new phases containing stacks of axial isoscalar (eta or eta') domain walls. We also show that a quark-matter state known as ``Goldstone current state,'' in which a gradient of a Goldstone field is spontaneously generated, is ferromagnetic due to the axial anomaly. We estimate the size of the fields created by such a state in a typical neutron star to be of order 10^{14}-10^{15} G.
description: 18 pages, v2: added a discussion of the energy cost of neutralizing the domain wall charge