cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Features of Explainability: How users understand counterfactual and causal explanations for categorical and continuous features in XAI
Creators: name: Warren, Greta
name: Keane, Mark T
name: Byrne, Ruth M J
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: H.5.2; I.2.1
subject: 68-11

description: Counterfactual explanations are increasingly used to address interpretability, recourse, and bias in AI decisions. However, we do not know how well counterfactual explanations help users to understand a systems decisions, since no large scale user studies have compared their efficacy to other sorts of explanations such as causal explanations (which have a longer track record of use in rule based and decision tree models). It is also unknown whether counterfactual explanations are equally effective for categorical as for continuous features, although current methods assume they do. Hence, in a controlled user study with 127 volunteer participants, we tested the effects of counterfactual and causal explanations on the objective accuracy of users predictions of the decisions made by a simple AI system, and participants subjective judgments of satisfaction and trust in the explanations. We discovered a dissociation between objective and subjective measures: counterfactual explanations elicit higher accuracy of predictions than no-explanation control descriptions but no higher accuracy than causal explanations, yet counterfactual explanations elicit greater satisfaction and trust than causal explanations. We also found that users understand explanations referring to categorical features more readily than those referring to continuous features. We discuss the implications of these findings for current and future counterfactual methods in XAI.
description: 26 pages, 7 figures, appendix
Implementing and managing occupational health and safety in micro, small and medium-sized enterprises: the role of business owners and managers - an integrative literature review
Creators: name: Rieger, Monika A.
name: Dr. Anke Wagner
name: Rind, Esther
name: Neunhöffer, Anna T.
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Medicine and Health Sciences
subject: SME
subject: Occupational safety and health
subject: Occupational health and safety
subject: small and medium-sized enterprises
subject: OSH
subject: management
subject: leadership

description: This project aims at describing the role of business owners or managers in the implementation of occupational health and safety of employees in (their) micro, small and medium-sized enterprises (SMEs). By searching four databases (Pubmed, PsycINFO, Cochrane, Business Source Premier), studies in companies with up to 250 employees are collected. Enabling and hindering factors regarding managers and their role in the implementation of occupational health and safety in SMEs will be identified. The current state of research on the implementation of occupational health and safety of employees with regard to the role of business owners or their appointed managers will be described and possible needs for further research will be indicated.
Controlling the false discovery rate via knockoffs
Creators: name: Barber, Rina Foygel
name: Candès, Emmanuel J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Methodology (stat.ME)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In many fields of science, we observe a response variable together with a large number of potential explanatory variables, and would like to be able to discover which variables are truly associated with the response. At the same time, we need to know that the false discovery rate (FDR) - the expected fraction of false discoveries among all discoveries - is not too high, in order to assure the scientist that most of the discoveries are indeed true and replicable. This paper introduces the knockoff filter, a new variable selection procedure controlling the FDR in the statistical linear model whenever there are at least as many observations as variables. This method achieves exact FDR control in finite sample settings no matter the design or covariates, the number of variables in the model, or the amplitudes of the unknown regression coefficients, and does not require any knowledge of the noise level. As the name suggests, the method operates by manufacturing knockoff variables that are cheap - their construction does not require any new data - and are designed to mimic the correlation structure found within the existing variables, in a way that allows for accurate FDR control, beyond what is possible with permutation-based methods. The method of knockoffs is very general and flexible, and can work with a broad class of test statistics. We test the method in combination with statistics from the Lasso for sparse regression, and obtain empirical results showing that the resulting method has far more power than existing selection rules when the proportion of null variables is high.
description: Published at http://dx.doi.org/10.1214/15-AOS1337 in the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Optimal Antenna Placement for Two-Antenna Near-Field Wireless Power Transfer
Creators: name: Mayer, Kenneth MacSporran
name: Cottatellucci, Laura
name: Schober, Robert
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Current trends in communication system design precipitate a change in the operating regime from the traditional far-field to the radiating near-field (Fresnel) region. We investigate the optimal transmit antenna placement for a multiple-input single-output (MISO) wireless power transfer (WPT) system designed for a three-dimensional cuboid room under line-of-sight (LoS) conditions in the Fresnel region. We formulate an optimisation problem for maximising the received power at the worst possible receiver location by considering the spherical nature of the electromagnetic (EM) wavefronts in the Fresnel region while assuming perfect knowledge of the channel at the transmitter. For the case of two transmit antennas, we derive a closed-form expression for the optimal positioning of the antennas which is purely determined by the geometry of the environment. If the room contains locations where the far-field approximation holds, the proposed positioning is shown to reduce to the far-field solution. The analytical solution is validated through simulation. Furthermore, the maximum received power at the locations yielding the worst performance is quantified and the power gain over the optimal far-field solution is presented. For the considered cuboid environment, we show that a distributed antenna system is optimal in the Fresnel region, whereas a co-located antenna architecture is ideal for the far-field.
description: 7 pages, 3 figures, six page version of this paper has been submitted to IEEE ICC 2023
Bowditch's JSJ tree and the quasi-isometry classification of certain Coxeter groups, with an appendix written jointly with Christopher Cashen
Creators: name: Dani, Pallavi
name: Thomas, Anne
Publisher: name: arXiv
Year: 2014
Subjects: subject: Group Theory (math.GR)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: Bowditch's JSJ tree for splittings over 2-ended subgroups is a quasi-isometry invariant for 1-ended hyperbolic groups which are not cocompact Fuchsian. Our main result gives an explicit, computable "visual" construction of this tree for certain hyperbolic right-angled Coxeter groups. As an application of our construction we identify a large class of such groups for which the JSJ tree, and hence the visual boundary, is a complete quasi-isometry invariant, and thus the quasi-isometry problem is decidable. We also give a direct proof of the fact that among the Coxeter groups we consider, the cocompact Fuchsian groups form a rigid quasi-isometry class. In an appendix, written jointly with Christopher Cashen, we show that the JSJ tree is not a complete quasi-isometry invariant for the entire class of Coxeter groups we consider.
description: 46 pages, 5 figures. Added Appendix B (joint with Christopher Cashen) and a discussion about generalizing the results in the paper to higher dimensions. Made other minor revisions based on the referee's comments. To appear in Journal of Topology
Parity violation in the scalar trispectrum: no-go theorems and yes-go examples
Creators: name: Cabass, G
name: Jazayeri, S
name: Pajer, E
name: Stefanyszyn, D
Publisher: name: Apollo - University of Cambridge Repository
Year: 2023
Subjects: Early Universe Particle Physics
Effective Field Theories
Space-Time Symmetries

description: Abstract We derive a set of no-go theorems and yes-go examples for the parity-odd primordial trispectrum of curvature perturbations. We work at tree-level in the decoupling limit of the Effective Field Theory of Inflation and assume scale invariance and a Bunch-Davies vacuum. We show that the parity-odd scalar trispectrum vanishes in the presence of any number of scalar fields with arbitrary mass and any parity-odd scalar correlator vanishes in the presence of any number of spinning fields with massless de Sitter mode functions, in agreement with the findings of Liu, Tong, Wang and Xianyu [1]. The same is true for correlators with an odd number of conformally-coupled external fields. We derive these results using both the (boostless) cosmological bootstrap, in particular the Cosmological Optical Theorem, and explicit perturbative calculations. We then discuss a series of yes-go examples by relaxing the above assumptions one at the time. In particular, we provide explicit results for the parity-odd trispectrum for (i) violations of scale invariance in single-clock inflation, (ii) the modified dispersion relation of the ghost condensate (non-Bunch-Davies vacuum), and (iii) interactions with massive spinning fields. Our results establish the parity-odd trispectrum as an exceptionally sensitive probe of new physics beyond vanilla inflation.
La huella indeleble. Entrevista a Arnaldo Orfila
Creators: name: Díaz, Víctor
Publisher: name: Zenodo
Year: 2019

description: Entrevista de Víctor Díaz Arciniega al Editor Arnaldo Orfila. Entrevista aparecida en La Jornada Semanal, México D.F., número 278, 9 de octubre de 1994, pp. 18-27
Giambattista Torelló, Dalle Mura di Gerico. Note di psicologia Spirituale, Anima & Psiche/2, Edizioni Ares-Milano 1987, 280 pp., 210X135.
Creators: name: Neiva, A. Costa
Publisher: name: Theologica
Year: 1994

description: Theologica, v. 29 n. 2 (1994): Santuários marianos | Braga e Viana do Castelo
Thermodynamic origins of two-component multiphase condensates of proteins.
Creators: name: Chew, Pin Yu
name: Joseph, Jerelle A
name: Collepardo-Guevara, Rosana
name: Reinhardt, Aleks
Publisher: name: Apollo - University of Cambridge Repository
Year: 2023
Subjects: 1.1 Normal biological development and functioning
1 Underpinning research
Generic health relevance

description: Acknowledgements: We acknowledge funding from the University of Cambridge Ernest Oppenheimer Fund [PYC], the Winton Programme for the Physics of Sustainability [PYC, RC-G], the European Research Council under the European Union's Horizon 2020 research and innovation programme [grant 803326; RC-G]. JAJ is a Junior Research Fellow at King's College. This work was performed using resources provided by the Cambridge Tier-2 system operated by the University of Cambridge Research Computing Service funded by EPSRC Tier-2 capital grant EP/P020259/1 [RC-G, JAJ, AR]. The funders had no role in study design, data collection and analysis, decision to publish or preparation of the manuscript.
description: Intracellular condensates are highly multi-component systems in which complex phase behaviour can ensue, including the formation of architectures comprising multiple immiscible condensed phases. Relying solely on physical intuition to manipulate such condensates is difficult because of the complexity of their composition, and systematically learning the underlying rules experimentally would be extremely costly. We address this challenge by developing a computational approach to design pairs of protein sequences that result in well-separated multilayered condensates and elucidate the molecular origins of these compartments. Our method couples a genetic algorithm to a residue-resolution coarse-grained protein model. We demonstrate that we can design protein partners to form multiphase condensates containing naturally occurring proteins, such as the low-complexity domain of hnRNPA1 and its mutants, and show how homo- and heterotypic interactions must differ between proteins to result in multiphasicity. We also show that in some cases the specific pattern of amino-acid residues plays an important role. Our findings have wide-ranging implications for understanding and controlling the organisation, functions and material properties of biomolecular condensates.
description: We acknowledge funding from the University of Cambridge Ernest Oppenheimer Fund [PYC], the Winton Programme for the Physics of Sustainability [PYC, RC-G], the European Research Council under the European Union’s Horizon 2020 research and innovation programme [grant 803326; RC-G]. JAJ is a Junior Research Fellow at King’s College. This work was performed using resources provided by the Cambridge Tier-2 system operated by the University of Cambridge Research Computing Service funded by EPSRC Tier-2 capital grant EP/P020259/1 [RC-G, JAJ, AR].
Invertible subalgebras
Creators: name: Haah, Jeongwan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Operator Algebras (math.OA)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We introduce invertible subalgebras of local operator algebras on lattices. An invertible subalgebra is defined to be one such that every local operator can be locally expressed by elements of the inveritible subalgebra and those of the commutant. On a two-dimensional lattice, an invertible subalgebra hosts a chiral anyon theory by a commuting Hamiltonian, which is believed not to be possible on any full local operator algebra. We prove that the stable equivalence classes of $\mathsf d$-dimensional invertible subalgebras form an abelian group under tensor product, isomorphic to the group of all $\mathsf d + 1$ dimensional QCA modulo blending equivalence and shifts. In an appendix, we consider a metric on the group of all QCA on infinite lattices and prove that the metric completion contains the time evolution by local Hamiltonians, which is only approximately locality-preserving. Our metric topology is strictly finer than the strong topology.
description: 34 pages, 2 figures, (v2) includes a proof that any 1d invertible subalgebra is trivial, (v3) minor changes (v4) expanding the proof of A.5
Quantifying the intrinsic randomness of quantum measurements
Creators: name: Senno, Gabriel
name: Strohm, Thomas
name: Acín, Antonio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Intrinsic quantum randomness is produced when a projective measurement on a given basis is implemented on a pure state that is not an element of the basis. The prepared state and implemented measurement are perfectly known, yet the measured result cannot be deterministically predicted. In realistic situations, however, measurements and state preparation are always noisy, which introduces a component of stochasticity in the outputs that is not a consequence of the intrinsic randomness of quantum theory. Operationally, this stochasticity is modelled through classical or quantum correlations with an eavesdropper, Eve, whose goal is to make the best guess about the outcomes produced in the experiment. In this work, we study Eve's maximum guessing probability when she is allowed to have correlations with, both, the state and the measurement. We show that, unlike the case of projective measurements (as it was already known) or pure states (as we prove), in the setting of generalized measurements and mixed states, Eve's guessing probability differs depending on whether she can prepare classically or quantumly correlated strategies.
description: 5+6 pages, 2 figures. Comments welcome!
Neutron-proton effective mass splitting in neutron-rich matter at normal density from analyzing nucleon-nucleus scattering data within an isospin dependent optical model
Creators: name: Li, Xiao-Hua
name: Guo, Wen-Jun
name: Li, Bao-An
name: Chen, Lie-Wen
name: Fattoyev, Farrukh J.
name: Newton, William G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The neutron-proton effective $k$-mass splitting in asymmetric nucleonic matter of isospin asymmetry $δ$ and normal density is found to be $m^{*}_{n-p}\equiv(m^{*}_{n}-m^{*}_{p})/m=(0.41 \pm0.15)δ$ from analyzing globally 1088 sets of reaction and angular differential cross sections of proton elastic scattering on 130 targets with beam energies from 0.783 MeV to 200 MeV, and 1161 sets of data of neutron elastic scattering on 104 targets with beam energies from 0.05 MeV to 200 MeV within an isospin dependent non-relativistic optical potential model. It sets a useful reference for testing model predictions on the momentum dependence of the nucleon isovector potential necessary for understanding novel structures and reactions of rare isotopes.
description: Published version, Physics Letters B743 (2015) 408
Perverse motives and graded derived category $\mathcal{O}$
Creators: name: Soergel, Wolfgang
name: Wendt, Matthias
Publisher: name: arXiv
Year: 2014
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 14C15, 14M15, 17B10, 22E47

description: For a variety with a Whitney stratification by affine spaces, we study categories of motivic sheaves which are constant mixed Tate along the strata. We are particularly interested in those cases where the category of mixed Tate motives over a point is equivalent to the category of finite-dimensional bigraded vector spaces. Examples of such situations include rational motives on varieties over finite fields and modules over the spectrum representing the semisimplification of de Rham cohomology for varieties over the complex numbers. We show that our categories of stratified mixed Tate motives have a natural weight structure. Under an additional assumption of pointwise purity for objects of the heart, tilting gives an equivalence between stratified mixed Tate sheaves and the bounded homotopy category of the heart of the weight structure. Specializing to the case of flag varieties, we find natural geometric interpretations of graded category $\mathcal O$ and Koszul duality.
description: 42 pages, corrected mistake in Section 8, other minor fixes. Comments welcome!
$T$-depth-optimized Quantum Search with Quantum Data-access Machine
Creators: name: Park, Jung Jun
name: Baek, Kyunghyun
name: Kim, M. S.
name: Nha, Hyunchul
name: Kim, Jaewan
name: Bang, Jeongho
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum search algorithms offer a remarkable advantage of quadratic reduction in query complexity using quantum superposition principle. However, how an actual architecture may access and handle the database in a quantum superposed state has been largely unexplored so far; the quantum state of data was simply assumed to be prepared and accessed by a black-box operation -- so-called oracle, even though this process, if not appropriately designed, may adversely diminish the quantum query advantage. Here, we introduce an efficient quantum data-access process, dubbed as quantum data-access machine (QDAM), and present a general architecture for quantum search algorithm. We analyze the runtime of our algorithm in view of the fault-tolerant quantum computation (FTQC) consisting of logical qubits within an effective quantum error correction code. Specifically, we introduce a measure involving two computational complexities, i.e. quantum query and $T$-depth complexities, which can be critical to assess performance since the logical non-Clifford gates, such as the $T$ (i.e., $π/8$ rotation) gate, are known to be costliest to implement in FTQC. Our analysis shows that for $N$ searching data, a QDAM model exhibiting a logarithmic, i.e., $O(\log{N})$, growth of the $T$-depth complexity can be constructed. Further analysis reveals that our QDAM-embedded quantum search requires $O(\sqrt{N} \times \log{N})$ runtime cost. Our study thus demonstrates that the quantum data search algorithm can truly speed up over classical approaches with the logarithmic $T$-depth QDAM as a key component.
description: 16 pages, 8 figures / Published version
Degradation model of high-nickel positive electrodes: Effects of loss of active material and cyclable lithium on capacity fade
Creators: name: Zhuo, Mingzhao
name: Offer, Gregory
name: Marinescu, Monica
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Nickel-rich layered oxides have been widely used as positive electrode materials for high-energy-density lithium-ion batteries, but their degradation has severely affected cell performance, in particular at a high voltage and temperature. However, the underlying degradation mechanisms have not been well understood due to the complexity and lack of predictive models.Here we present a model at the particle level to describe the structural degradation caused by phase transition in terms of loss of active material (LAM), loss of lithium inventory (LLI), and resistance increase. The particle degradation model is then incorporated into a cell-level P2D model to explore the effects of LAM and LLI on capacity fade in cyclic ageing tests. It is predicted that the loss of cyclable lithium (trapped in the degraded shell) leads to a shift in the stoichiometry range of the negative electrode but does not directly contribute to the capacity loss, and that the loss of positive electrode active materials dominates the fade of usable cell capacity in discharge. The available capacity at a given current rate is further decreased by the additional resistance of the degraded shell layer. The change pattern of the state-of-charge curve provides information of more dimensions than the conventional capacity-fade curve, beneficial to the diagnosis of degradation modes. The model has been implemented into PyBaMM and made available as open source codes.
description: 30 pages, 13 figures
title: Career or Carer ?
title: une rétrospective d'un travail interprofessionnel
titleType: Subtitle
title: Career or Carer ?
titleType: AlternativeTitle
Creators: name: Mittaz, Camille
name: Schläpfer, German Naller
Publisher: name: Unknown
Year: 0
Subjects: subject: aidants naturels

description: Est-il possible de concilier le rôle de proche aidant avec une activité professionnelle rémunérée ? Ce travail reprend le protocole de recherche, le poster et l’abstract, 3 travaux ayant été effectués lors de la première partie, en y développant les savoirs infirmiers mobilisés. Pour ce faire, nous avons mené 12 entretiens semi-dirigés à l’aide d’un canevas d’entretien avec des personnes issues des ressources humaines (RH) ou managers décisionnaires travaillant dans des entreprises de tailles et de secteurs différents afin d'obtenir un échantillonnage le plus varié possible. Nous avons également mené 8 entretiens complémentaires avec des experts de différents milieux ainsi que 3 proches aidants ayant été médiatisés. « La douleur est la plainte principale des patients » (Avet & al., 2006). C’est pourquoi nous nous sommes intéressées à la thématique de la douleur aigue. Etant donné que le domaine de l’ambulatoire est en constante évolution depuis ces dernières années et que l’infirmière est en première ligne lors de la gestion de la douleur, nous nous sommes interrogées sur la douleur postopératoire dans un service d’ambulatoire. Ce questionnement nous a amené à poser notre question de recherche qui est la suivante : quelles sont les interventions infirmières à mettre en place, dans un service de chirurgie ambulatoire, pour soulager les douleurs postopératoires chez un patient ?
Emergence of Concepts in DNNs?
Creators: name: Räz, Tim
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The present paper reviews and discusses work from computer science that proposes to identify concepts in internal representations (hidden layers) of DNNs. It is examined, first, how existing methods actually identify concepts that are supposedly represented in DNNs. Second, it is discussed how conceptual spaces -- sets of concepts in internal representations -- are shaped by a tradeoff between predictive accuracy and compression. These issues are critically examined by drawing on philosophy. While there is evidence that DNNs able to represent non-trivial inferential relations between concepts, our ability to identify concepts is severely limited.
description: 13 pages, 2 figures
L-space surgery and twisting operation
Creators: name: Motegi, Kimihiko
Publisher: name: arXiv
Year: 2014
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25, 57M27

description: A knot in the 3-sphere is called an L-space knot if it admits a nontrivial Dehn surgery yielding an L-space, i.e. a rational homology 3-sphere with the smallest possible Heegaard Floer homology. Given a knot K, take an unknotted circle c and twist K n times along c to obtain a twist family { K_n }. We give a sufficient condition for { K_n } to contain infinitely many L-space knots. As an application we show that for each torus knot and each hyperbolic Berge knot K, we can take c so that the twist family { K_n } contains infinitely many hyperbolic L-space knots. We also demonstrate that there is a twist family of hyperbolic L-space knots each member of which has tunnel number greater than one.
description: The final version, accepted for publication by Algebr. Geom. Topol
title: Les automutilations
title: comment accompagner une souffrance s'exprimant par des auto-lésions, dans le contexte des urgences somatiques ?
titleType: Subtitle
title: Les automutilations
titleType: AlternativeTitle
Creators: name: Da Silva, Paula
name: Dos Santos, Vania
name: Perez, Sabela
Publisher: name: Unknown
Year: 0
Subjects: subject: Automutilation
subject: Urgences somatiques
subject: Attitudes infirmières
subject: Souffrance psychique
subject: Douleur
subject: Avis des patients

description: Les automutilations sont un problème de santé en constante expansion. Ces événements sont fréquents chez une grande partie de la population et sont parfois marqués d’une chronicité. Il est important de différencier ces actes des tentatives de suicide car, pas toutes les automutilations ont cette visée. En effet, ce passage à l’acte est exprimé par ses auteurs afin de soulager une souffrance psychique devenue insupportable. Néanmoins, ces agissements restent encore peu compris de la part du personnel soignant et plus particulièrement pour ceux travaillant aux urgences somatiques. Ceci engendre des attitudes négatives de leur part et il en résulte que les patients sont insatisfaits des soins reçus. « La douleur est la plainte principale des patients » (Avet & al., 2006). C’est pourquoi nous nous sommes intéressées à la thématique de la douleur aigue. Etant donné que le domaine de l’ambulatoire est en constante évolution depuis ces dernières années et que l’infirmière est en première ligne lors de la gestion de la douleur, nous nous sommes interrogées sur la douleur postopératoire dans un service d’ambulatoire. Ce questionnement nous a amené à poser notre question de recherche qui est la suivante : quelles sont les interventions infirmières à mettre en place, dans un service de chirurgie ambulatoire, pour soulager les douleurs postopératoires chez un patient ?
A characterization of diagonal Poisson structures
Creators: name: Lima, Renan
name: Pereira, Jorge Vitorio
Publisher: name: arXiv
Year: 2013
Subjects: subject: Symplectic Geometry (math.SG)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 53D17

description: The degeneracy locus of a generically symplectic Poisson structure on a Fano manifold is always a singular hypersurface. We prove that there exists just one family of generically symplectic Poisson structures in Fano manifold with cyclic Picard group having a reduced simple normal crossing degeneracy locus.
description: 16 pages
Symplectic Groupoids for Poisson Integrators
Creators: name: Cosserat, Oscar
Publisher: name: arXiv
Year: 2022
Subjects: subject: Differential Geometry (math.DG)
subject: Numerical Analysis (math.NA)
subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We use local symplectic Lie groupoids to construct Poisson integrators for generic Poisson structures. More precisely, recursively obtained solutions of a Hamilton-Jacobi-like equation are interpreted as Lagrangian bisections in a neighborhood of the unit manifold, that, in turn, give Poisson integrators. We also insist on the role of the Magnus formula, in the context of Poisson geometry, for the backward analysis of such integrators.
Safe Stabilization for Stochastic Time-Delay Systems
Creators: name: Pan, Zhuo-Rui
name: Ren, Wei
name: Sun, Xi-Ming
Publisher: name: arXiv
Year: 2022
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: This paper addresses the safe stabilization problem of stochastic nonlinear time-delay systems. Based on theKrasovskii approach, we first propose a stochastic control Lyapunov-Krasovskii functional to guarantee the stabilization objective and a stochastic control barrier-Krasovskii functional to ensure the safety objective. Both functionals are developed respectively for each control objectives for the first time. Since the optimization problem is not easy to be resolved for stochastic time-delay systems, we derive a sliding mode based approach to combine the proposed two functionals and to mediate stabilization and safety objectives, which allows to achieve the stabilization objective under the safety requirement. The proposed approach is illustrated via a numerical example.
description: 7 pages, 8 figures. Accepted by IEEE TAC as a Technical Note. arXiv admin note: text overlap with arXiv:2204.12106
Additional file 6 of Factors influencing conveyance of older adults with minor head injury by paramedics to the emergency department: a multiple methods study
Creators: name: Nicholson, Helen
name: Voss, Sarah
name: Black, Sarah
name: Taylor, Hazel
name: Williams, David
name: Benger, Jonathan
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Developmental Biology
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 6. Suggested facilitators of non-conveyance ofolder people with minor head injury by paramedics.
Tip-induced excitonic luminescence nanoscopy of an atomically-resolved van der Waals heterostructure
Creators: name: López, Luis E. Parra
name: Rosławska, Anna
name: Scheurer, Fabrice
name: Berciaud, Stéphane
name: Schull, Guillaume
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Low-temperature scanning tunneling microscopy is used to probe, with atomic-scale spatial resolution, the intrinsic luminescence of a van der Waals heterostructure, made of a transition metal dichalcogenide monolayer stacked onto a few-layer graphene flake supported by an Au(111) substrate. Sharp emission lines arising from neutral, charged and localised excitons are reported. Their intensities and emission energies vary as a function of the nanoscale environment of the van der Waals heterostructure, explaining the variability of the emission properties observed with diffraction-limited approaches. Our work paves the way towards understanding and control of optoelectronic phenomena in moiré superlattices with atomic-scale resolution.
description: 14 pages, 4 figures, 3 supplementary figures
Correlation-boosted quantum engine: A proof-of-principle demonstration
Creators: name: Herrera, Marcela
name: Reina, John H.
name: D'Amico, Irene
name: Serra, Roberto M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Employing currently available quantum technology, we design and implement a non-classically correlated SWAP heat engine that allows to achieve an efficiency above the standard Carnot limit. Such an engine also boosts the amount of extractable work, in a wider parameter window, with respect to engine's cycle in the absence of initial quantum correlations in the working substance. The boosted efficiency arises from a trade-off between the entropy production and the consumption of quantum correlations during the full thermodynamic cycle. We derive a generalized second-law limit for the correlated cycle and implement a proof-of-principle demonstration of the engine efficiency enhancement by effectively tailoring the thermal engine on a cloud quantum processor.
title: Le cancer se fiche de savoir qui je suis. Pas moi, ni mon corps!
title: quelles actions infirmières pour accompagner l'atteinte corporelle des adolescents atteints d'un cancer ?
titleType: Subtitle
title: Le cancer se fiche de savoir qui je suis. Pas moi, ni mon corps!
titleType: AlternativeTitle
Creators: name: Dao, Vân-Anh Ariane
name: Osmanovic, Aldina
Publisher: name: Unknown
Year: 0
Subjects: subject: Adolescent
subject: Cancer
subject: Image corporelle
subject: Transition
subject: Coping
subject: Résilience
subject: Soins infirmiers

description: En fonction du sens que l’adolescent donne à son expérience du cancer, quelles actions infirmières peuvent impacter sur l’image corporelle liée aux effets secondaires des traitements chimiothérapeutiques ?
The $γ$-support as a micro-support
Creators: name: Asano, Tomohiro
name: Guillermou, Stéphane
name: Humilière, Vincent
name: Ike, Yuichi
name: Viterbo, Claude
Publisher: name: arXiv
Year: 2022
Subjects: subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 53D12, 37J11, 35A27

description: We prove that for any element $L$ in the completion of the space of smooth compact exact Lagrangian submanifolds of a cotangent bundle equipped with the spectral distance, the $γ$-support of $L$ coincides with the reduced micro-support of its sheaf quantization. As an application, we give a characterization of the Vichery subdifferential in terms of $γ$-support.
description: 9 pages, final version
Margarida Maria Gonçalves, O Risco de Amar, Ed. A.O., «Oração e Vida» 26, Braga 1992, 143 pp., 180X135, ISBN 972-39-0257-5
Creators: name: Pereira, José Dias
Publisher: name: Theologica
Year: 1994

description: Theologica, v. 29 n. 2 (1994): Santuários marianos | Braga e Viana do Castelo
Power spectrum of the geodesic flow on hyperbolic manifolds
Creators: name: Dyatlov, Semyon
name: Faure, Frédéric
name: Guillarmou, Colin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Dynamical Systems (math.DS)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We describe the complex poles of the power spectrum of correlations for the geodesic flow on compact hyperbolic manifolds in terms of eigenvalues of the Laplacian acting on certain natural tensor bundles. These poles are a special case of Pollicott-Ruelle resonances, which can be defined for general Anosov flows. In our case, resonances are stratified into bands by decay rates. The proof also gives an explicit relation between resonant states and eigenstates of the Laplacian.
description: 84 pages, 5 figures; minor changes. To appear in Analysis&PDE
Subshifts of finite type and matching for intermediate $β$-transformations
Creators: name: Sun, Yun
name: Li, Bing
name: Ding, Yiming
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: 37E05, 37B10

description: We focus on the relationships between matching and subshift of finite type for intermediate $β$-transformations $T_{β,α}(x)=βx+α$ ($\bmod$ 1), where $x\in[0,1]$ and $(β,α) \in Δ:= \{ (β, α) \in \mathbb{R}^{2}:β\in (1, 2) \; \rm{and} \; 0 < α<2 - β\}$. We prove that if the kneading space $Ω_{β,α}$ is a subshift of finite type, then $T_{β,α}$ has matching. Moreover, each $(β,α)\inΔ$ with $T_{β,α}$ has matching corresponds to a matching interval, and there are at most countable different matching intervals on the fiber. Using combinatorial approach, we construct a pair of linearizable periodic kneading invariants and show that, for any $ε>0$ and $(β,α)\inΔ$ with $T_{β,α}$ has matching, there exists $(β,α^{\prime})$ on the fiber with $|α-α^{\prime}|<ε$, such that $Ω_{β,α^{\prime}}$ is a subshift of finite type. As a result, the set of $(β,α)$ for which $Ω_{β,α}$ is a subshift of finite type is dense on the fiber if and only if the set of $(β,α)$ for which $T_{β,α}$ has matching is dense on the fiber.
description: 19 pp
Virtual twins of nonlinear vibrating multiphysics microstructures: physics-based versus deep learning-based approaches
Creators: name: Gobat, Giorgio
name: Fresca, Stefania
name: Manzoni, Andrea
name: Frangi, Attilio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: Machine Learning (cs.LG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Micro-Electro-Mechanical-Systems are complex structures, often involving nonlinearites of geometric and multiphysics nature, that are used as sensors and actuators in countless applications. Starting from full-order representations, we apply deep learning techniques to generate accurate, efficient and real-time reduced order models to be used as virtual twin for the simulation and optimization of higher-level complex systems. We extensively test the reliability of the proposed procedures on micromirrors, arches and gyroscopes, also displaying intricate dynamical evolutions like internal resonances. In particular, we discuss the accuracy of the deep learning technique and its ability to replicate and converge to the invariant manifolds predicted using the recently developed direct parametrization approach that allows extracting the nonlinear normal modes of large finite element models. Finally, by addressing an electromechanical gyroscope, we show that the non-intrusive deep learning approach generalizes easily to complex multiphysics problems
Economic and ecological trade-offs of agricultural specialization at different spatial scales
Creators: name: Klasen, Stephan
name: Meyer, Katrin M.
name: Dislich, Claudia
name: Euler, Michael
name: Faust, Heiko
name: Gatto, Marcel
name: Hettig, Elisabeth
name: Melati, Dian N.
name: Jaya, I. Nengah Surati
name: Otten, Fenna
name: Pérez-Cruzado, César
name: Steinebach, Stefanie
name: Tarigan, Suria
name: Wiegand, Kerstin
Publisher: name: FID GEO
Year: 2016
Subjects: subject: 634
subject: Ecosystem Services
subject: Economies of Scale
subject: Indonesia
subject: Monoculture
subject: Oil Palm
subject: Rubber

description: Specialization in agricultural systems can lead to trade-offs between economic gains and ecosystem functions. We suggest and explore a conceptual framework in which economic gains can be maximized when production activities are specialized at increasingly broader scales (from the household to the village, region or above), particularly when markets for outputs and inputs function well. Conversely,more specialization likely reduces biodiversity and significantly limits ecosystem functions. When agricultural specialization increases and moves to broader scales as a result of improved infrastructure and markets or other drivers, ecosystem functions can also be endangered at broader spatial scales. Policies to improve agricultural incomes may influence the level of specialization at different scales and thus affect the severity of the trade-offs. This paper takes Jambi province in Indonesia, a current hotspot of rubber and oil palm monoculture, as a case study to illustrate these issues.We empirically show that the level of specialization differs across scales with higher specialization at household and village levels and higher diversification towards the province level. We discuss ways to resolve trade-offs between economic gains and ecological costs, including landscape design, targeted policies, and adoption of longterm perspectives.
Jean Lafrance, O poder da oração, Ed. A.O., «Oração e Vida» 29, Braga 1992, 257 pp., 190X190, ISBN 972-39-0259-1
Creators: name: Pereira, José Dias
Publisher: name: Theologica
Year: 1994

description: Theologica, v. 29 n. 2 (1994): Santuários marianos | Braga e Viana do Castelo
Water scarcity and oil palm expansion: social views and environmental processes
Creators: name: Merten, Jennifer
name: Röll, Alexander
name: Guillaume, Thomas
name: Meijide, Ana
name: Tarigan, Suria
name: Agusta, Herdhata
name: Dislich, Claudia
name: Dittrich, Christoph
name: Faust, Heiko
name: Gunawan, Dodo
name: Hein, Jonas
name: Hendrayanto
name: Knohl, Alexander
name: Kuzyakov, Yakov
name: Wiegand, Kerstin
name: Hölscher, Dirk
Publisher: name: FID GEO
Year: 2016
Subjects: subject: 333.7
subject: eco-hydrology
subject: environmental perception
subject: erosion
subject: evapotranspiration
subject: forest
subject: land-use change
subject: runoff
subject: rural water supply
subject: streamflow
subject: transpiration

description: Conversions of natural ecosystems, e.g., from rain forests to managed plantations, result in significant changes in the hydrological cycle including periodic water scarcity. In Indonesia, large areas of forest were lost and extensive oil palm plantations were established over the last decades. We conducted a combined social and environmental study in a region of recent land-use change, the Jambi Province on Sumatra. The objective was to derive complementary lines of arguments to provide balanced insights into environmental perceptions and eco-hydrological processes accompanying land-use change. Interviews with villagers highlighted concerns regarding decreasing water levels in wells during dry periods and increasing fluctuations in stream flow between rainy and dry periods. Periodic water scarcity was found to severely impact livelihoods, which increased social polarization. Sap flux measurements on forest trees and oil palms indicate that oil palm plantations use as much water as forests for transpiration. Eddy covariance analyses of evapotranspiration over oil palm point to substantial additional sources of evaporation in oil palm plantations such as the soil and epiphytes. Stream base flow from a catchment dominated by oil palms was lower than from a catchment dominated by rubber plantations; both showed high peaks after rainfall. An estimate of erosion indicated approximately 30 cm of topsoil loss after forest conversion to both oil palm and rubber plantations. Analyses of climatic variables over the last 20 years and of a standardized precipitation evapotranspiration index for the last century suggested that droughts are recurrent in the area, but have not increased in frequency or intensity. Consequently, we assume that conversions of rain forest ecosystems to oil palm plantations lead to a redistribution of precipitated water by runoff, which leads to the reported periodic water scarcity. Our combined social and environmental approach points to significant and thus far neglected eco-hydrological consequences of oil palm expansion.
description: Open-Access-Publikationsfonds 2016
AdvMIL: Adversarial Multiple Instance Learning for the Survival Analysis on Whole-Slide Images
Creators: name: Liu, Pei
name: Ji, Luping
name: Ye, Feng
name: Fu, Bo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: The survival analysis on histological whole-slide images (WSIs) is one of the most important means to estimate patient prognosis. Although many weakly-supervised deep learning models have been developed for gigapixel WSIs, their potential is generally restricted by classical survival analysis rules and fully-supervised learning requirements. As a result, these models provide patients only with a completely-certain point estimation of time-to-event, and they could only learn from the labeled WSI data currently at a small scale. To tackle these problems, we propose a novel adversarial multiple instance learning (AdvMIL) framework. This framework is based on adversarial time-to-event modeling, and integrates the multiple instance learning (MIL) that is much necessary for WSI representation learning. It is a plug-and-play one, so that most existing MIL-based end-to-end methods can be easily upgraded by applying this framework, gaining the improved abilities of survival distribution estimation and semi-supervised learning. Our extensive experiments show that AdvMIL not only could often bring performance improvement to mainstream WSI survival analysis methods at a relatively low computational cost, but also enables these methods to effectively utilize unlabeled data via semi-supervised learning. Moreover, it is observed that AdvMIL could help improving the robustness of models against patch occlusion and two representative image noises. The proposed AdvMIL framework could promote the research of survival analysis in computational pathology with its novel adversarial MIL paradigm.
description: 15 pages, 10 figures, 8 tables
The anomalous distributions and Soret coefficient in a nonequilibrium colloid system
Creators: name: Zhou, Yanjun
name: Du, Jiulin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The density distributions and Soret coefficient in a nonequilibrium colloidal system with nonuniform temperature are studied by the overdamped Langevin equation for Brownian motion in an inhomogeneous strong friction medium. Based on the relation between the temperature gradient, the interaction potential and the q-parameter in nonextensive statistics, We show that the colloidal particle density can be a function of the temperature and anomalously follows the noted alpha-distribution, or equivalently it can also be a function of the potential energy and follows Tsallis distribution. With the q-parameter we can establish a new formula of the Soret coefficient and thus, bridge the gap between the ideally theoretical Soret coefficient and available experiments.
description: 10 pages, 1 table, 40 references