cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On utility maximization under convex portfolio constraints
Creators: name: Larsen, Kasper
name: Žitković, Gordan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Portfolio Management (q-fin.PM)
subject: Optimization and Control (math.OC)
subject: Probability (math.PR)
subject: FOS: Economics and business
subject: FOS: Mathematics

description: We consider a utility-maximization problem in a general semimartingale financial model, subject to constraints on the number of shares held in each risky asset. These constraints are modeled by predictable convex-set-valued processes whose values do not necessarily contain the origin; that is, it may be inadmissible for an investor to hold no risky investment at all. Such a setup subsumes the classical constrained utility-maximization problem, as well as the problem where illiquid assets or a random endowment are present. Our main result establishes the existence of optimal trading strategies in such models under no smoothness requirements on the utility function. The result also shows that, up to attainment, the dual optimization problem can be posed over a set of countably-additive probability measures, thus eschewing the need for the usual finitely-additive enlargement.
description: Published in at http://dx.doi.org/10.1214/12-AAP850 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
A note on singularity and non-proper value set of polynomial maps of $\mathbb{C}^2$
Creators: name: Van Chau, Nguyen
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 14R15, 14R xx

description: Some properties of the relation between the singular point set and the non-proper value curve of polynomial maps of $\mathbb{C}^2$ are expressed in terms of Newton-Puiseux expansions.
Intrinsic energy spread and bunch length growth in plasma-based accelerators due to betatron motion
Creators: name: Pousa, A. Ferran
name: de la Ossa, A. Martinez
name: Assmann, R. W.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Plasma-based accelerators (PBAs), having demonstrated the production of GeV electron beams in only centimetre scales, offer a path towards a new generation of highly compact and cost-effective particle accelerators. However, achieving the required beam quality, particularly on the energy spread for applications such as free-electron lasers, remains a challenge. Here we investigate fundamental sources of energy spread and bunch length in PBAs which arise from the betatron motion of beam electrons. We present an analytical theory, validated against particle-in-cell simulations, which accurately describes these phenomena. Significant impact on the beam quality is predicted for certain configurations, explaining previously observed limitations on the achievable bunch length and energy spread. Guidelines for mitigating these contributions towards high-quality beams are deduced.
Word Learning in Context - Metaphors and Neologisms
Creators: name: Budiu, Raluca
name: Anderson, John R.
Publisher: name: Carnegie Mellon University
Year: 2018
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: Metaphors are a prolific source of new words in a language. In this chapter we study how people understand metaphors and how metaphors "freeze" and come to denote new meanings.
Quality Appraisal of Ambulatory Oral Cephalosporin and Fluoroquinolone Use in the 16 German Federal States from 2014–2019
Creators: name: Gradl, Gabriele
name: Werning, Johanna
name: Enners, Salka
name: Kieble, Marita
name: Schulz, Martin
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: antibiotic utilization
subject: regional differences
subject: quality appraisal
subject: cephalosporins
subject: fluoroquinolones
subject: prescription rates
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::615 Pharmakologie, Therapeutik

description: Background: Despite concerns about causing bacterial resistance and serious side effects, oral cephalosporins and fluoroquinolones are still frequently prescribed in Germany. We aimed to test a method for the detection of regional quality differences in the use of oral cephalosporins and fluoroquinolones and to apply this to the German federal states. Methods: Use of antibiotics from 2014–2019 was analyzed using dispensing data from community pharmacies claimed to the statutory health insurance (SHI) funds. Quality of regional antibiotic use in 2019 was assessed by calculating indicators based on defined daily doses per 1000 SHI-insured persons per day (DID). Oral cephalosporin and fluoroquinolone use was followed by linear regression analyses. Results: The method used was suitable to find meaningful quality differences in ambulatory oral cephalosporin and fluoroquinolone use between the German federal states. In 2019, DID varied from 1.62 in Brandenburg to 3.17 in Rhineland-Palatinate for cephalosporins and from 0.47 in Brandenburg to 0.89 in Saarland for fluoroquinolones. The city-states Hamburg, Bremen, and Berlin showed highest quality with the applied indicator set. From 2014–2019, a significant decrease in utilization of oral cephalosporins was found in all federal states. During 2017–2019, all states showed a significant decline of fluoroquinolone use.
On Monotonous Separately Continuous Functions
Creators: name: Grushka, Ya. I.
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics
subject: 54C05

description: Let ${\mathbb T}=({\bf T},\leq)$ and ${\mathbb T}_{1}=({\bf T}_{1},\leq_{1})$ be linearly ordered sets and $\mathscr{X}$ be a topological space. The main result of the paper is the following: If function $\boldsymbol{f}(t,x):{\bf T}\times\mathscr{X}\mapsto{\bf T}_{1}$ is continuous in each variable ("$t$"and "$x$") separately and function $\boldsymbol{f}_{x}(t)=\boldsymbol{f}(t,x)$ is monotonous on ${\bf T}$ for every $x\in\mathscr{X}$, then $\boldsymbol{f}$ is continuous mapping from ${\bf T}\times\mathscr{X}$ to ${\bf T}_{1}$, where ${\bf T}$ and ${\bf T}_{1}$ are considered as topological spaces under the order topology and ${\bf T}\times\mathscr{X}$ is considered as topological space under the Tychonoff topology on the Cartesian product of topological spaces ${\bf T}$ and $\mathscr{X}$.
description: 5 pages
title: ADCO, Ordre cistercien : comptes (1403-1423) (11 H 1161), f. 00143
Creators: name: de la Côte-d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2019
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: comptes
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Ordre cistercien : comptes (1403-1423), Archives départementales de la Côte-d'Or, (11 H 1161). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Ordre cistercien : comptes (1403-1423), Archives départementales de la Côte-d'Or, (11 H 1161), f. 00143, in Projet CBMA - Corpus Burgundiae Medii Aevi \[Ressource en ligne\], https:// manuscrits.cbma-project.eu/
Back to J. M. Keynes in Regulating International Commodity Markets: The Limits of the “Transparency Agenda”
Creators: name: Wohlmuth, Karl
Publisher: name: Universität Bremen
Year: 2014
Subjects: subject: -
subject: 330

description: In this paper weak and strong forms of global governance of raw materials markets are compared. This is done by comparing the “transparency agenda” with the “structural reform agenda”.
Unravelling the influencing hydrogeological factors contributing to land subsidence in the Tianjin Plain of China using a multi-scale geographically weighted regression model and monitoring data
Creators: name: Long, Zhao
name: Yumei, Li
name: Yong, Luo
Publisher: name: Geological Society of London
Year: 2024
Subjects: classificationCode: 3705
subject: Geology
subject: FOS: Earth and related environmental sciences

description: Simulation results for OLS, GWR, and MGWR models used in this study.
Learning about Protein Structure and Function with Molecular CaseNet
Creators: name: Lorenz, Laurel
name: Johnson, Keith
name: Goodman, Anya
name: Dutta, Shuchismita
Publisher: name: QUBES Educational Resources
Year: 2021

description: Poster on the case studies available through Molecular CaseNet that focus on protein structure and function. Presented at the 2021 BIOME Institute.
Word frequency and receiver operating characteristic curves in recognition memory: evidence for a dual-process interpretation.
Creators: name: Arndt, Jason
name: Reder, Lynne M.
Publisher: name: Carnegie Mellon University
Year: 2002
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: Dual-process models of the word-frequency mirror effect posit that low-frequency words are recollected more often than high-frequency words, producing the hit rate differences in the word-frequency effect, whereas high-frequency words are more familiar, producing the false-alarm-rate differences. In this pair of experiments, the authors demonstrate that the analysis of receiver operating characteristic (ROC) curves provides critical information in support of this interpretation. Specifically, when participants were required to discriminate between studied nouns and their plurality reversed complements, the ROC curve was accurately described by a threshold model that is consistent with recollection-based recognition. Further, the plurality discrimination ROC curves showed characteristics consistent with the interpretation that participants recollected low-frequency items more than high-frequency items.
Spatiotemporal solitary modes in a twisted cylinder waveguide pipe with the self-focusing Kerr nonlinearity
Creators: name: Huang, Hao
name: Lyu, Lin
name: Xie, Maobin
name: Luo, Weiwen
name: Chen, Zhaopin
name: Luo, Zhihuan
name: Huang, Chunqing
name: Fu, Shenhe
name: Li, Yongyao
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We study the spatiotemporal solitary modes that propagate in a hollow twisted cylinder waveguide pipe with a self-focusing Kerr nonlinearity. Three generic solitary modes, one belonging to the zero-harmonic (0H) and the other two belonging to the first-harmonic (1H), are found in the first rotational Brillouin zone. The 0H solitary modes can be termed as a quasi-1D (one-dimensional) temporal soliton. Their characteristics depend only on the energy flow. The 1H solitary mode can be termed a quasi-2D (two-dimensional) bullet, whose width is much narrower than the angular domain of the waveguide. In contrast to the 0H mode, the characteristics of the 1H solitary mode depend on both their energy flow and the rotating speed of the waveguide. We demonstrate numerically that the 1H solitary modes are stable when their energy flow is smaller than the threshold norm of the \emph{Townes soliton}. The boundaries of the bistable area for these two types of solitary modes are predicted by the analyses via two-mode approximation. This prediction is in accordance with the numerical findings. We also demonstrate analytically that the 1H solitary mode of this system can be applied to emulate the nonlinear dynamics of solitary modes with 1D Rashba spin-orbit (SO) coupling by optics. Two degenerated states of the 1H solitary mode, semi-dipole and mixed mode, are found from this setting via the mechanism of SO coupling. Collisions between the pair of these two types of solitary modes are also discussed in the paper. The pair of the 0H solitary mode features only the elastic collision, whereas the pair of 1H solitary modes can feature both elastic and inelastic collision when the total energy flow of the two modes are smaller or close to the threshold norm of the \emph{Townes soliton}.
description: 6 figures, 52 references
Why Would Social Networks Be Linked to Affect and Health Practices?
Creators: name: Cohen, Sheldon
name: Lemay, Edward P
Publisher: name: Carnegie Mellon University
Year: 2007
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: Objective: To examine the relation among social integration (SI), affect, and smoking and alcohol consumption. Design: The authors administered social network and psychological questionnaires to 193 adults and then interviewed them on 14 consecutive evenings about their daily social interactions, affect, and smoking and alcohol consumption. Main outcome measures: The main outcome measures were positive and negative affect, smoking, and alcohol consumption. Results: Between-subjects analyses found that those with more diverse social networks (high in SI) interacted with more people and smoked and drank less. SI was not, however, associated with affect. In contrast, within-subject analyses found that the more people participants interacted with during a day, the greater their positive affect, drinking, and smoking on that day. However, this occurred primarily for persons low in SI. High-SI persons reported high positive affect irrespective of the number of people with whom they interacted, and their smoking and drinking behaviors were less influenced by number of interactants. Conclusion: SI may alter health because it affects responsiveness to the social influences of others.
Rigidity Properties for Hyperbolic Generalizations
Creators: name: Healy, Brendan Burns
Publisher: name: arXiv
Year: 2018
Subjects: subject: Group Theory (math.GR)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 20F65

description: We make a few observations on the absence of geometric and topological rigidity for acylindrically hyperbolic and relatively hyperbolic groups. In particular, we demonstrate the lack of a well-defined limit set for acylindrical actions on hyperbolic spaces, even under the assumption of universality. We also prove a statement about relatively hyperbolic groups inspired by a remark by Groves, Manning, and Sisto about the quasi-isometry type of combinatorial cusps. Finally, we summarize these results in a table in order to assert a meta-statement about the decay of metric rigidity as the conditions on actions on hyperbolic spaces are loosened.
description: Fixed proof of Lemma 3.5. Final Version - accepted to the Canadian Mathematical Bulletin
Enhancing biodiversity in agroforestry systems (PA) - Promoviendo la biodiversidad en los sistemas agroforestales (PA)
Creators: name: Mosquera-Losada MR
name: Ferreiro-Domínguez N
name: Rodríguez-Rigueiro FJ
name: Santiago-Freijanes JJ
name: González-Hernández MP
name: Fernández-Lorenzo JL
name: Romero-Franco R
name: Rigueiro-Rodríguez A
Publisher: name: Zenodo
Year: 2019
Subjects: ecosystem
Europe
ecosistema
Europa

description: La biodiversidad es crucial para aumentar la producción por unidad de superficie en agricultura a través de una combinación adecuada de plantas, que son capaces de emplear diferentes tipos de recursos a partir del suelo y aire, y, por lo tanto, se incrementa la provisión de servicios ecosistémicos. Las prácticas agroforestales mejoran la biodiversidad y por tanto la provisión de servicios ecosistémicos. La presencia de árboles aislados en terrenos arables, claramente crea microambientes espaciales y temporales con diferentes balances en agua y nutrientes, que favorecen unas variedades/especies en lugar de otras y que son diferentes en las zonas próximas a los árboles que en espacios desarbolados. Del mismo modo, la adaptación de las diferentes variedades/especies del sotobosque depende del área de influencia de las diferentes especies leñosas y esta heterogeneidad causada por estas especies leñosas afecta a las plantas pero también a las diferentes categorías taxonómicas vinculadas a la biodiversidad en cascada y por tanto a la provisión de servicios ecosistémicos a partir de una determinada superficie.
title: A STUDY OF C3HD IN COLD INTERSTELLAR CLOUDS
Creators: name: BELL, MB
name: AVERY, LW
name: MATTHEWS, HE
name: FELDMAN, PA
name: WATSON, JKG
name: MADDEN, SC
name: Irvine, William M.
Publisher: name: University of Massachusetts Amherst
Year: 1988
Subjects: subject: Astrophysics and Astronomy

description: The published version is located at http://adsabs.harvard.edu/doi/10.1086/166150
description: The 1(10)-1(01) transition of C3HD was detected at 19.418 GHz at twelve positions in cold, dark clouds, and the D hyperfine components were resolved in two sources (L1498 and TMC-1C) well enough to derive values for the D quadrupole coupling constants. Simultaneous observations of C3H2 in each source yield relative integrated line intensities in the range 0.10-0.18, from which relative C3HD/C3H2 abundances in the range 0.05-0.15 were derived. These are among the highest deuteration ratios yet observed. Within the limits of the observational and modeling uncertainties, it is possible to explain the derived C3HD/C3H2 ratios by ion-molecule chemistry if e is equal to about 3 x 10 to the -7th.
Why it's easier to remember seeing a face we already know than one we don't: preexisting memory representations facilitate memory formation.
Creators: name: Reder, Lynne M.
name: Victoria, Lindsay W.
name: Manelis, Anna
name: Oates, Joyce M.
name: Bates, Jordan T.
name: Cook, Shaun
name: Dutcher, Janine M.
name: Aizenstein, Howard J.
name: Quinlan, Joseph J.
name: Gyulai, Ferenc
Publisher: name: Carnegie Mellon University
Year: 2013
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: In two experiments, we provided support for the hypothesis that stimuli with preexisting memory representations (e.g., famous faces) are easier to associate to their encoding context than are stimuli that lack long-term memory representations (e.g., unknown faces). Subjects viewed faces superimposed on different backgrounds (e.g., the Eiffel Tower). Face recognition on a surprise memory test was better when the encoding background was reinstated than when it was swapped with a different background; however, the reinstatement advantage was modulated by how many faces had been seen with a given background, and reinstatement did not improve recognition for unknown faces. The follow-up experiment added a drug intervention that inhibited the ability to form new associations. Context reinstatement did not improve recognition for famous or unknown faces under the influence of the drug. The results suggest that it is easier to associate context to faces that have a preexisting long-term memory representation than to faces that do not.
Mosaic BRAF fusions are a recurrent cause of congenital melanocytic naevi targetable by MEK pathway inhibition.
Creators: name: Martin, Sara Barberan
name: Polubothu, Satyamaanasa
name: Bruzos, Alicia Lopez
name: Kelly, Gavin
name: Horswell, Stuart
name: Sauvadet, Aimie
name: Bryant, Dale
name: Zecchin, Davide
name: Riachi, Melissa
name: Michailidis, Fanourios
name: Sadri, Amir
name: Muwanga-Nanyonjo, Noreen
name: Lopez-Balboa, Pablo
name: Knöpfel, Nicole
name: Bulstrode, Neil
name: Pittman, Alan
name: Yeh, Iwei
name: Kinsler, Veronica A
Publisher: name: The Francis Crick Institute
Year: 2024
Subjects: classificationCode: Tumour Biology
subject: Tumour Biology
classificationCode: Signalling & Oncogenes
subject: Signalling & Oncogenes
classificationCode: Chemical Biology & High Throughput
subject: Chemical Biology & High Throughput
classificationCode: Genetics & Genomics
subject: Genetics & Genomics
classificationCode: Developmental Biology
subject: Developmental Biology
classificationCode: Computational & Systems Biology
subject: Computational & Systems Biology
classificationCode: Genome Integrity & Repair
subject: Genome Integrity & Repair

description: Among children with multiple congenital melanocytic naevi (CMN), 25% have no established genetic cause, of which many develop a hyperproliferative and severely pruritic phenotype resistant to treatment. Gene fusions have been reported in individual cases of CMN. Here, we study 169 CMN patients, 38 of whom were double wild-type for NRAS/BRAF mutations. Nineteen of these 38 patients had sufficient tissue to undergo RNAseq, which revealed mosaic BRAF fusions in 11/19 patients and mosaic RAF1 fusions in 1/19. Recurrently, fusions involved the loss of the 5' regulatory domain of BRAF or RAF1 but preserved the kinase domain. We validated all cases and detected the fusions in two separate naevi in 5/12 patients, confirming clonality. The absence of the fusion in blood in 8/12 patients indicated mosaicism. Primary culture of BRAF-fusion naevus cells from 3/12 patients demonstrated highly increased MAPK activation, despite only mildly increased BRAF expression, suggesting additional mechanisms of kinase activation. Trametinib quenched MAPK hyperactivation in vitro and treatment of two patients caused rapid improvement in bulk tissue, improving bodily movement, and reducing inflammation and severe pruritus. These findings offer a genetic diagnosis to an additional group of patients and trametinib as a treatment option for the severe associated phenotypes.
Trajectories of change in written arguments: how students' scientific written arguments change throughout a school year
Creators: name: El-Moslimany, Hebbah
Publisher: name: No Publisher Supplied
Year: 2019

description: Science education has moved toward engaging students in the practices of science, including modeling, argumentation, and explanation (Krajcik, McNeill, & Reiser, 2008). One way to engage students in these practices is through model-based inquiry learning environments in which they engage in scientific practices including argumentation using evidence (Lehrer, Schauble, & Lucas, 2008). Students develop verbal and written arguments through interpreting and identifying evidence and using them to support or develop a model that explains the evidence. But there are challenges for students: students may not understand certain aspects of argumentation, including argument construction, evaluating claims and evidence, and using evidence to justify a claim (Driver, Newton, & Osborne, 2000; Sandoval & Millwood, 2005), because this practice is different from the practices with which they are familiar (McNeill, 2011; Ryu & Sandoval, 2012).To address the challenges of learning to argue with models and evidence, it is important to examine the trajectories of change in students’ argumentation along multiple dimensions of reasoning. By exploring students’ written arguments at different points of instruction and over an extended period of time, one can look to see when change in students’ arguments actually occurred and how this change occurs (Ryu & Sandoval, 2012). To determine the changes in students’ written arguments that can occur over multiple months of model-based inquiry instruction, I analyzed students’ written argumentation during a six-month implementation of a model-based inquiry curriculum. In my analyses, I focused on how components of students’ arguments changed and identified patterns of change in arguments across time for individual students as well as for higher-performing and lower-performing students.The purpose of the study was to examine the trajectories of change in students’ written arguments, by focusing on how students’ reasoning emerges, identifying differences in the quality and structure of students’ arguments, and if certain competencies appear first before others develop. This study will help to advance our understanding of how student’s reasoning emerges and changes over the school year, and how it can be supported in a model-based inquiry classroom.
title: ADCO, Cartulaire de Cîteaux pour les domaines de Saint-Jean de Losne et Losne (XVIIIe siècle), Cart. 198-01 (11 H 1055), 185 folios, f. 0180
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: Petot, Frédéric
name: CG21/F.PETOT/2019
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: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire

description: Cartulaire de Cîteaux pour les domaines de Saint-Jean de Losne et Losne (XVIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 198-01 (11 H 1055), 185 folios, f. 0180, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de Cîteaux pour les domaines de Saint-Jean de Losne et Losne (XVIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 198-01 (11 H 1055), 185 folios, f. 0180, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
title: Technologies and infrastructure to reduce the work burden of women
title: Insights from time-use studies in Ethiopia, Ghana and Uganda
titleType: AlternativeTitle
Creators: name: Saleemi, Sundus
name: Getahun, Tigabu D.
name: Mekonnen, Jemberu L.
name: Asante, Felix A.
name: Awo, Martha A.
name: Bonzo, Benjamin B.
name: Sam, Ralph
name: Isoto, Rosemary E.
name: Nakamatte, Irene
name: Bashaasha, Bernard
Publisher: name: Center for Development Research (ZEF)
Year: 2024
Subjects: subject: Africa
subject: Agricultural production
subject: Food and nutrition security
subject: Trade
subject: Gender
subject: ddc:630
subject: ddc:640

description: Gender and social norms in African countries result in a greater share of overall work on women than men. Notably, women and girls across the globe undertake a greater share of unpaid domestic and care work than men. This disparity has several implications. First, despite consuming women’s time and effort this work remains unremunerated. Second, by constraining women’s time, it limits their capacity to participate fully in paid work which has implications for women’s income, wealth, resource access and voice and bargaining power within households and the society at large. Moreover, when women and girls undertake both paid and unpaid work, they sacrifice rest and leisure. For young girls and girl children, work impacts their schooling and skills development. The distribution of unpaid work between men and women, however, can change over time with changes in gender norms. Moreover, unpaid work can be reduced through technologies, access to markets and infrastructure. Drawing on PARI research on time use, this policy brief first presents the distribution of men’s and women’s time use between paid work, unpaid work and leisure and highlights the gendered patterns of its distribution in the rural households of Ethiopia, Ghana and Uganda. It further presents these patterns for children and their time in schooling and learning activities. Moreover, we show agricultural and domestic technologies along with access to infrastructure that can reduce unpaid work.
Quantum mechanics as a statistical description of classical electrodynamics
Creators: name: Knoll, Yehonatan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is shown that quantum mechanics is a plausible statistical description of an ontology described by classical electrodynamics. The reason that no contradiction arises with various no-go theorems regarding the compatibility of QM with a classical ontology, can be traced to the fact that classical electrodynamics of interacting particles has never been given a consistent definition. Once this is done, our conjecture follows rather naturally, including a purely classical explanation of photon related phenomena. Our analysis entirely rests on the block-universe view entailed by relativity theory.
description: Inaccuracies corrected regarding the interpretation of a superposition state; The hydrogen wave-function more accurately interpreted; A pedagogical figure added; A reference added
Why do children learn to say “Broke”? A model of learning the past tense without feedback
Creators: name: Taatgen, Niels
name: Anderson, John R.
Publisher: name: Carnegie Mellon University
Year: 2002
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: Learning the English past tense is characterized by a U-shaped learning function for the irregular verbs. Existing cognitive models often rely on a sudden increase in vocabulary, a high token-frequency of regular verbs, and complicated schemes of feedback in order to model this phenomenon. All these assumptions are at odds with empirical data. In this paper a hybrid ACT-R model is presented that shows U-shaped learning without direct feedback, changes in vocabulary, or unrealistically high rates of regular verbs. The model is capable of learning the default rule, even if regular forms are infrequent. It can also help explore the question of why there is a distinction between regular and irregular verbs in the first place, by examining the costs and benefits of both types of verbs.
Oddities of quantum colorings
Creators: name: Mančinska, Laura
name: Roberson, David E.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Combinatorics (math.CO)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study quantum analogs of graph colorings and chromatic number. Initially defined via an interactive protocol, quantum colorings can also be viewed as a natural operator relaxation of graph coloring. Since there is no known algorithm for producing nontrivial quantum colorings, the existing examples rely on ad hoc constructions. Almost all of the known constructions of quantum $d$-colorings start from $d$-dimensional orthogonal representations. We show the limitations of this method by exhibiting, for the first time, a graph with a 3-dimensional orthogonal representation which cannot be quantum 3-colored, and a graph that can be quantum 3-colored but has no 3-dimensional orthogonal representation. Together these examples show that the quantum chromatic number and orthogonal rank are not directly comparable as graph parameters. The former graph also provides an example of several interesting, and previously unknown, properties of quantum colorings. The most striking of these is that adding a new vertex adjacent to all other vertices does not necessarily increase the quantum chromatic number of a graph. This is in stark contrast to the chromatic number and many of its variants. This graph also provides the smallest known example (14 vertices) exhibiting a separation between chromatic number and its quantum analog.
description: 17 pages, comments welcome
Parallel magnetic field driven quantum phase transition in a thin topological insulator film
Creators: name: Zyuzin, A. A.
name: Hook, M. D.
name: Burkov, A. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: It is well-known that helical surface states of a three-dimensional topological insulator (TI) do not respond to a static in-plane magnetic field. Formally this occurs because the in-plane magnetic field appears as a vector potential in the Dirac Hamiltonian of the surface states and can thus be removed by a gauge transformation of the surface electron wavefunctions. Here we show that when the top and bottom surfaces of a thin film of TI are hybridized and the Fermi level is in the hybridization gap, a nonzero diamagnetic response appears. Moreover, a quantum phase transition occurs at a finite critical value of the parallel field from an insulator with a diamagnetic response to a semimetal with a vanishing response to the parallel field.
description: 4+ pages, 1 figure, published version
A brief guide to reversing and extended symmetries of dynamical systems
Creators: name: Baake, Michael
Publisher: name: arXiv
Year: 2018
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: The reversing symmetry group is a well-studied extension of the symmetry group of a dynamical system, the latter being defined by the action of a single homeomorphism on a topological space. While it is traditionally considered in nonlinear dynamics, where the space is simple but the map is complicated, it has an interesting counterpart in symbolic dynamics, where the map is simple but the space is not. Moreover, there is an interesting extension to the case of higher-dimensional shifts, where a similar concept can be introduced via the centraliser and the normaliser of the acting group in the full automorphism group of the shift space. We recall the basic notions and review some of the known results, in a fairly informal manner, to give a first impression of the phenomena that can show up in the extension from the centraliser to the normaliser, with some emphasis on recent developments.
description: 18 pages, 2 figures; informal introduction and overview
Lettre de Pierre Bertholon à Jean-François Séguier, 1776-12-19
Creators: name: Bertholon, Pierre
name: Bertholon, Pierre
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2021
Subjects: Fossiles
Sciences naturelles (général)

description: [transcription] Monsieur et cher confrère,

J'ai été obligé d'aller à Montpellier pour quelques petites affaires et j'ai profité de l'occasion pour remettre à votre ami Monsieur Amoreux un exemplaire de mon mémoire que je vous prie bien d'agréer. Je suis charmé d'avoir dû donner un témoignage public de la haute idée que j'ai de vous et de ma reconnaissance pour toutes vos bontés. Je saisirai toujours avec empressement toutes les circonstances où je pourrai encore manifester mes sentiments et je ne croirai jamais m'être suffisamment acquitté. Je vous prie de remettre le 2nd exemplaire que vous trouverez dans ce paquet au Père Paulhian.

J'ai lu ici une description assez étendue de l'aurore boréale que j'ai vue à Béziers ; dès que je serai de retour, je vous en enverrai une copie pour la communiquer à notre Académie de Nîmes. Je dois mardi lire un second mémoire sur les causes de l'aurore boréale et le tout abrégé sera lu à la séance publique de Montpellier.

[fol. 266 v] Je n'ai trouvé qu'un morceau de corne de cerf pétrifié, le second sera pour vous. J'ai un morceau de noix pétrifiée qui m'a été donné par Monsieur de Jussieu, c'est un quartier de l'amande. Il y a apparence que ce morceau est semblable à celui que Monsieur l'abbé Gruel vous a donné. Comment penseriez-vous que ce n'est qu'un dessèchement ? Quelles sont vos raisons?

Monsieur de Genssane a dit que dans l'endroit où on a pris les corps arrondis qu'on vous a envoyés de Narbonne étaient ces noix. Ces corps ronds et noirs n'en ont pas même l'apparence. J'en ai un morceau semblable à une moitié de ces corps ronds, mais une moitié creuse et je vous avoue que je n'y trouve pas encore de ressemblance avec des noix.

Il n'est que trop vrai qu'on a perdu le célèbre Monsieur de Jussieu ; je l'avais beaucoup vu à Paris et je l'ai doublement regretté.

Comme je suis ici qu'en passant, je ne vous écrirai pas plus au long et je me contenterai de vous rappeler les sentiments du respectueux attachement que je vous ai voué pour la vie.

Votre très humble

Et très obéissant serviteur.

Bertholon

A Montpellier le 19 décembre 1776.

Monsieur

Monsieur Séguier, secrétaire

perpétuel de l'Académie royale de Nîmes; de

l'Académie royale des inscriptions et belles-lettres

de Paris, près de l'Eglise des Carmes

A Nîmes
description: [personnes citées] Abbé Gruel, Aimée-Henri Paulhian, Antoine de Genssane, Bernard de Jussieu, Pierre Joseph Amoreux
description: Source: [lieu de Conservation] Nîmes, Bibliothèque Carré d'Art [cote]ms. 138_7, fol. 266
description: Source: ark:/12148/btv1b10015163w
Multifractal detrended fluctuation analysis of combustion flames in four-burner impinging entrained-flow gasifier
Creators: name: Niu, Miao-Ren
name: Zhou, Wei-Xing
name: Yan, Zhuo-Yong
name: Guo, Qing-Hua
name: Liang, Qin-Feng
name: Wang, Fu-Chen
name: Yu, Zun-Hong
Publisher: name: arXiv
Year: 2007
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: On a laboratory-scale testing platform of impinging entrained-flow gasifier with four opposed burners, the flame images for diesel combustion and gasification process were measured with a single charge coupled device (CCD) camera. The two-dimensional multifractal detrended fluctuation analysis was employed to investigate the multifractal nature of the flame images. Sound power-law scaling in the annealed average of detrended fluctuations was unveiled when the order $q>0$ and the multifractal feature of flame images were confirmed. Further analyses identified two multifractal parameters, the minimum and maximum singularity $α_{\min}$ and $α_{\max}$, serving as characteristic parameters of the multifractal flames. These two characteristic multifractal parameters vary with respect to different experimental conditions.
description: 9 Elsart pages including 7 eps figures
Who's Stressed? Distributions of Psychological Stress in the United States in Probability Samples from 1983, 2006, and 2009
Creators: name: Cohen, Sheldon
name: Janicki-Deverts, Denise
Publisher: name: Carnegie Mellon University
Year: 2012
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: Psychological stress was assessed in 3 national surveys administered in 1983, 2006, and 2009. In all 3 surveys, stress was higher among women than men; and increased with decreasing age, education, and income. Unemployed persons reported high levels of stress, while the retired reported low levels. All associations were independent of one another and of race/ethnicity. Although minorities generally reported more stress than Whites, these differences lost significance when adjusted for the other demographics. Stress increased little in response to the 2008–2009 economic downturn, except among middle-aged, college-educated White men with full-time employment. These data suggest greater stress-related health risks among women, younger adults, those of lower socioeconomic status, and men potentially subject to substantial losses of income and wealth.
Entanglement entropy of critical spin liquids
Creators: name: Zhang, Yi
name: Grover, Tarun
name: Vishwanath, Ashvin
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Quantum spin liquids are phases of matter whose internal structure is not captured by a local order parameter. Particularly intriguing are critical spin liquids, where strongly interacting excitations control low energy properties. Here we calculate their bipartite entanglement entropy that characterize their quantum structure. In particular we calculate the Renyi entropy $S_2$, on model wavefunctions obtained by Gutzwiller projection of a Fermi sea. Although the wavefunctions are not sign positive, $S_2$ can be calculated on relatively large systems (>324 spins), using the variational Monte Carlo technique. On the triangular lattice we find that entanglement entropy of the projected Fermi-sea state violates the boundary law, with $S_2$ enhanced by a logarithmic factor. This is an unusual result for a bosonic wave-function reflecting the presence of emergent fermions. These techniques can be extended to study a wide class of other phases.
description: 4+ pages, 2 figures, to be published in PRL
Magnetic field gradient driven dynamics of isolated skyrmions and antiskyrmions in frustrated magnets
Creators: name: Liang, J. J.
name: Yu, J. H.
name: Chen, J.
name: Qin, M. H.
name: Zeng, M.
name: Lu, X. B.
name: Gao, X. S.
name: Liu, J. M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The study of skyrmion/antiskyrmion motion in magnetic materials is very important in particular for the spintronics applications. In this work, we study the dynamics of isolated skyrmions and antiskyrmions in frustrated magnets driven by magnetic field gradient, using the Landau-Lifshitz-Gilbert simulations on the frustrated classical Heisenberg model on the triangular lattice. A Hall-like motion induced by the gradient is revealed in bulk system, similar to that in the well-studied chiral magnets. More interestingly, our work suggests that the lateral confinement in nano-stripes of the frustrated system can completely suppress the Hall motion and significantly speed up the motion along the gradient direction. The simulated results are well explained by the Thiele theory. It is demonstrated that the acceleration of the motion is mainly determined by the Gilbert damping constant, which provides useful information for finding potential materials for skyrmion-based spintronics.
description: 15 pages, 4 figures
When variability matters more than meaning: the effect of lexical forms on use of phonemic contrasts.
Creators: name: Thiessen, Erik
Publisher: name: Carnegie Mellon University
Year: 2011
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: During the first half of the 2nd year of life, infants struggle to use phonemic distinctions in label-object association tasks. Prior experiments have demonstrated that exposure to the phonemes in distinct lexical forms (e.g., /d/ and /t/ in daddy and tiger, respectively) facilitates infants' use of phonemic contrasts but also that they struggle to generalize the use of phonemic contrasts to novel syllabic contexts (Thiessen, 2007; Thiessen & Yee, 2010). Further, in prior research, infants have been provided only with experience in lexical forms that refer to novel objects, while many lexical forms in the natural environment do not have easily identified visual referents. The experiments in this article show that even lexical forms without referents can facilitate use of phonemic contrasts. Additionally, the results indicate that when lexical forms provide infants with enough variability (for example, a consonant followed by multiple different vowels), infants are able to generalize to novel contexts.
Controlled-NOT logic gate for phase qubits based on conditional spectroscopy
Creators: name: Ghosh, Joydip
name: Geller, Michael R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A controlled-NOT logic gate based on conditional spectroscopy has been demonstrated recently for a pair of superconducting flux qubits [Plantenberg et al., Nature 447, 836 (2007)]. Here we study the fidelity of this type of gate applied to a phase qubit coupled to a resonator (or a pair of capacitively coupled phase qubits). Our results show that an intrinsic fidelity of more than 99% is achievable in 45ns.
description: 5 pages, 5 figures, To appear in Quantum Inf. Proc
Phase transition in peristaltic transport of frictionless granular particles
Creators: name: Yoshioka, Naoki
name: Hayakawa, Hisao
Publisher: name: arXiv
Year: 2011
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Flow of dissipative particles driven by peristaltic motion of a tube is numerically studied. A transition from slow unjammed flow to fast jammed flow is found through the observation of the mass flux if the minimum width of the peristaltic tube is smaller than a critical value. It is also found that average and fluctuation of the transition time, and the peak value of the second moment of the mass flux exhibit power-law divergences at the critical point and these variables satisfy scaling relationships near the critical point. Dependences of the critical width and exponents on peristaltic velocity and on density are also discussed.
description: 6 pages, 7 figures, accepted for publication in Phys. Rev. E
NMR evidence for the persistence of spin-superlattice above the 1/8 magnetization plateau in SrCu2(BO3)2
Creators: name: Takigawa, M.
name: Matsubara, S.
name: Horvatic, M.
name: Berthier, C.
name: Kageyama, H.
name: Ueda, Y.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present 11B NMR studies of the 2D frustrated dimer spin system SrCu2(BO3)2 in the field range 27-31 T covering the upper phase boundary of the 1/8 magnetization plateau, identified at 28.4 T. Our data provide a clear evidence that above 28.4 T the spin-superlattice of the 1/8 plateau is modified but does not melt even though the magnetization increases. Although this is precisely what is expected for a supersolid phase, the microscopic nature of this new phase is much more complex. We discuss the field-temperature phase diagram on the basis of our NMR data.
description: 5 pages, 4 figures, published version