cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Khadi and the politics of viability and care : an exploration of handloom institutions in Karnataka
Creators: name: Schnell, Mackenzie
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Khadi
Viability politics
Ethics of care
Handloom institutions
Karnataka

description: Cotton and fabrics made of cotton yarn are political. These commoditized goods have been constructed as political tools for enslavement, oppression, liberation and self-expression. The multifaceted politics of cotton fabrics are woven into India’s complicated histories. Khadi, handspun and handwoven yarn, is one particularly poignant tool mobilized by Mohandas Karamchand Gandhi. Khadi was developed as a political tool which promised welfare for poor people and independence from the British colonial government through British-made cloth boycotts. Today, Khadi has been reappropriated as a political tool to fight corporate colonization and a way to extend care to people, mostly women, in relatively poor, rural communities. This thesis investigates the ways in which Khadi is used as a political tool today and the complicated notion of care across caste and gender in a neoliberal environment. Studying the politics and care of Khadi illuminates the constraints and opportunities for social justice within a market-based institution shaped by complex manager-employee relationships. I conducted semi-structured interviews (N = 27) with managers and craftspersons from three handloom institutions in Karnataka, a southern state of India, over the course of three weeks from December 2021 through January 2022. I engage in an interpretative analysis of the interviews and detail my experience as a researcher visiting each institution. Findings illuminate the complicated relationship between the handloom industry’s viability and the ability for managers and craftspersons to create caring handloom institutions. The ways in which viability and care contradict and cooperate are teased out. Ultimately, findings point to the boundedness of care in individual institutions to address systemic issues
Mean Field Model of Genetic Regulatory Networks
Creators: name: Andrecut, M.
name: Kauffman, S. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Genomics (q-bio.GN)
subject: FOS: Biological sciences

description: In this paper, we propose a mean-field model which attempts to bridge the gap between random Boolean networks and more realistic stochastic modeling of genetic regulatory networks. The main idea of the model is to replace all regulatory interactions to any one gene with an average or effective interaction, which takes into account the repression and activation mechanisms. We find that depending on the set of regulatory parameters, the model exhibits rich nonlinear dynamics. The model also provides quantitative support to the earlier qualitative results obtained for random Boolean networks.
description: Changed content and notation
COHESIVE Information System (CIS) (COHESIVE)
Creators: name: Di Pasquale, Adriano
name: Caldarelli, Valentina
Publisher: name: Zenodo
Year: 2019
Subjects: OHEJP
COHESIVE
COHESIVE Information System
CIS
Workpackage 4
D 4.1.1
Implemented database
IZSAM

description: Project JIP2 COHESIVE COHESIVE: One Health Structure In Europe
 Deliverable D-4.1.1 Workpackage 4 D 4.1.1 Implemented database
Time-resolved rheometry of drying liquids and suspensions
Creators: name: Lehéricey, Pierre
name: Delots, Audrey
name: Holten-Andersen, Niels
name: Divoux, Thibaut
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: From paints to food products, solvent evaporation is ubiquitous and critically impacts product rheological properties. It affects Newtonian fluids by concentrating any non-volatile components and viscoelastic materials, which hardens up. In both of these cases, solvent evaporation leads to a change in the sample volume, which makes any rheological measurements particularly challenging with traditional shear geometries. Here we show that the rheological properties of a sample experiencing `slow' evaporation can be monitored in a time-resolved fashion by using a zero normal-force controlled protocol in a parallel-plate geometry. Solvent evaporation from the sample leads to a decrease of the normal force, which is compensated at all times by a decrease of the gap height between the plates. As a result, the sample maintains a constant contact area with the plates despite the significant decrease of its volume. We validate the method under both oscillatory and continuous shear by accurately monitoring the viscosity of water-glycerol mixtures experiencing evaporation and a relative volume decrease as large as 70%. Moreover, we apply this protocol to dehydrating suspensions. Specifically, we monitor a dispersion of charged silica nanoparticles undergoing a glass transition induced by evaporation. While the decrease in gap height provides a direct estimate of the increasing particle volume fraction, oscillatory and continuous shear measurements allow us to monitor the suspension's evolving viscoelastic properties in real-time. Overall, our study shows that a zero normal-force protocol provides a simple approach to bulk and time-resolved rheological characterization for systems experiencing slow volume variations.
description: 10 pages, 6+4 figures
Rubidium "whiskers" in a vapor cell
Creators: name: Balabas, M. V.
name: Sushkov, A. O.
name: Budker, D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: Crystals of metallic rubidium are observed ``growing'' from paraffin coating of buffer-gas-free glass vapor cells. The crystals have uniform square cross-section, $\approx 30 μ$m on the side, and reach several mm in length.
description: 2 pages, 1 figure
title: 4D rods: 3D structures via programmable 1D composite rods
Creators: name: Ding, Zhen
name: Weeger, Oliver
name: Qi, H. Jerry
name: Dunn, Martin L.
Publisher: name: Elsevier
Year: 2021

description: Slender 1D structures are ubiquitous in nature and engineering and serve as building blocks for 3D structures at scales ranging from molecular to architectural. 3D printing enables fabrication of such structures with geometrical complexity that cannot be produced easily by traditional manufacturing methods, but comes with a cost of long building time and need for supporting structures during printing. Some of these limitations are overcome here through an approach that prints 1D rods with composite cross-sections, programmed to deform into a prescribed 3D shape simply upon heating. The straight or curved composite rods consist of a glassy polymer and an elastomer that are bonded to each other as a result of the manufacturing process; the latter is programmed with a compressive stress during the printing process. When heated, the stiff glassy polymer softens, resulting in release of the stress in the elastomer, and causes the 1D structure to deform into a new permanent 3D configuration. The cross-section of the composite rods can be designed to enable deformation modes of bending and twisting, a combination of which can guide the 1D rod into almost any 3D shape. With the use of a nonlinear thermomechanical computational model, several 3D rod structures are designed and demonstrated, highlighting the potential for increased functionality with material and time savings.
Presentazione. Sessant'anni e non sentirli
Creators: name: Bondi, Alessandro
Publisher: name: Studi Urbinati, A - Scienze giuridiche, politiche ed economiche
Year: 2019

description: Studi Urbinati, A - Scienze giuridiche, politiche ed economiche, V. 69, N. 3-4 (2018): Sessant'anni di studi giuridici europei a Urbino: il Séminaire de Droit Européen
Anomalous enhancement of quasiparticle current near a potential barrier in a Bose-Einstein condensate
Creators: name: Tsuchiya, S.
name: Ohashi, Y.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigate tunneling properties of Bogoliubov phonons in a Bose-Einstein condensate. We find the anomalous enhancement of the quasiparticle current $J_{\rm q}$ carried by Bogoliubov phonons near a potential barrier, due to the supply of the excess current from the condensate. This effect leads to the increase of quasiparticle transmission probability in the low energy region found by Kovrizhin {\it et al.}. We also show that the quasiparticle current twists the phase of the condensate wavefunction across the barrier, leading to a finite Josephson supercurrent $J_{\rm s}$ through the barrier. This induced supercurrent flows in the opposite direction to the quasiparticle current so as to cancel out the enhancement of $J_{\rm q}$ and conserve the total current $J=J_{\rm q}+J_{\rm s}$.
description: 4 pages, 3 figures, published version
Présentation du Séminaire d’Urbino
Creators: name: Ancel, Marie-Elodie
name: Pretelli, Ilaria
Publisher: name: Studi Urbinati, A - Scienze giuridiche, politiche ed economiche
Year: 2019

description: Studi Urbinati, A - Scienze giuridiche, politiche ed economiche, V. 69, N. 3-4 (2018): Sessant'anni di studi giuridici europei a Urbino: il Séminaire de Droit Européen
Random lattice superstrings
Creators: name: Feng, Haidong
name: Siegel, Warren
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose some new simplifying ingredients for Feynman diagrams that seem necessary for random lattice formulations of superstrings. In particular, half the fermionic variables appear only in particle loops (similarly to loop momenta), reducing the supersymmetry of the constituents of the Type IIB superstring to N=1, as expected from their interpretation in the 1/N expansion as super Yang-Mills.
description: Section 5 which describes contributions of the string measure added
La geografia dei diritti
Creators: name: Bondi, Alessandro
Publisher: name: Studi Urbinati, A - Scienze giuridiche, politiche ed economiche
Year: 2019

description: Sommario: 1. Identità europea. – 2. Dimensione nazionale. – 3. Dimensione europea. – 4. Dimensione globale. – 5. Senza memoria. – 6. Senza diritti. – 7. Senza Europa.
description: Studi Urbinati, A - Scienze giuridiche, politiche ed economiche, V. 69, N. 3-4 (2018): Sessant'anni di studi giuridici europei a Urbino: il Séminaire de Droit Européen
L’impact du Brexit sur la coopération judiciaire en matière civile et pénal
Creators: name: Bray, Robert
Publisher: name: Studi Urbinati, A - Scienze giuridiche, politiche ed economiche
Year: 2019

description: Sommaire: 1. Le contexte général. – 2. La mise en œuvre de Brexit au Royaume-Uni. – 3. La position du Gouvernement britannique relative à la coopération judiciaire en matière civile et pénale après le Brexit. – 3.1. Le droit pénal et la coopération policière. – 3.2. Le droit civil et familial. – 4. La position de la Commission européenne. – 5. L’accord sur le retrait. – 6. La Déclaration politique. – 7. Analyse.
description: Studi Urbinati, A - Scienze giuridiche, politiche ed economiche, V. 69, N. 3-4 (2018): Sessant'anni di studi giuridici europei a Urbino: il Séminaire de Droit Européen
Category $\mathcal O$ for the Virasoro algebra: Cohomology and Koszulity
Creators: name: Boe, Brian D.
name: Nakano, Daniel K.
name: Wiesner, Emilie
Publisher: name: arXiv
Year: 2007
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 17B68 (Primary); 17B56 (Secondary)

description: We investigate blocks of the Category $\mathcal O$ for the Virasoro algebra over the complex numbers. We demonstrate that the blocks have Kazhdan-Lusztig theories, and that the truncated blocks give rise to interesting Koszul algebras. The simple modules have BGG resolutions, and from this we compute the extensions between Verma modules and simple modules, and between pairs of simple modules.
description: 17 pages, 5 EPS figures; v2: minor changes, final published version; v3: corrected author addresses
Characterization of erbium doped fibers
Creators: name: Movassaghi, Mahan
Publisher: name: University of British Columbia
Year: 2009

description: In this thesis the theory of operation of single-mode erbium-doped fiber amplifiers pumped at 980 nm is described. Details of the derivation of the general rate equation for the propagation of signal, pump, and amplified spontaneous emission are provided. Based on this equation, and McCumber's theory of phonon-terminated optical masers, two closed form expressions are derived. In one of them, the fluorescence spectrum of an erbium-doped fiber is related to its spectral absorption coefficient. Based on this expression, a rigorous basis for the assessment of the applicability of McCumber's theory to the study of [sup 4]I[sub 13/2] ⇔ [sup 4]I[sub 15/2] transitions in erbium-doped fibers has been established. For the cases of five silica-based erbiumdoped fibers, experiments were performed and the results were used to validate this expression. Another important benefit of this expression is that it does not require a measurement of silica-based fiber's fluorescence spectrum, as it can be simply calculated from the spectral absorption coefficient, simplifying fiber characterization. The other closed form expression, provides a simple means for calculating absorption and emission cross-sections of erbiumdoped fibers using the easily measured spectral absorption coefficient, the gain coefficient at one particular wavelength, and the fluorescence lifetime. Also, based on this expression, an analytical method for the simple determination of the erbium ion concentration inside the fiber core is proposed. Experiments were performed to evaluate the cross-sections of an erbium-doped fiber over the wavelength range 1400-1650 nm. To check the accuracy of the calculated cross-sections,saturation powers at the wavelengths 1530 nm and 1550 nm were measured and results compared with the ones calculated from the cross-sections, obtaining agreements within 6%. Problems and difficulties associated with the conventional techniques for the measurement of the spectral fluorescence and of the fluorescence lifetime are described. Also new experimental setups were designed to simplify the measurement of these parameters. Furthermore, experimental techniques for the measurement of other fiber parameters such as, spectral absorption coefficient, gain coefficient, and signal saturation power are described. The new theoretical and experimental techniques presented in this thesis can provide a much simpler and more accurate means for characterizing erbium-doped fibers, improving the accuracy of the numerical models commonly used for modeling erbium-doped fiber amplifiers.
Eternal Adiabaticity
Creators: name: Burgarth, Daniel
name: Facchi, Paolo
name: Nakazato, Hiromichi
name: Pascazio, Saverio
name: Yuasa, Kazuya
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We iteratively apply a recently formulated adiabatic theorem for the strong-coupling limit in finite-dimensional quantum systems. This allows us to improve approximations to a perturbed dynamics, beyond the standard approximation based on quantum Zeno dynamics and adiabatic elimination. The effective generators describing the approximate evolutions are endowed with the same block structure as the unperturbed part of the generator, and exhibit adiabatic evolutions. This iterative adiabatic theorem reveals that adiabaticity holds eternally, that is, the system evolves within each eigenspace of the unperturbed part of the generator, with an error bounded by $O(1/γ)$ uniformly in time, where $γ$ characterizes the strength of the unperturbed part of the generator. We prove that the iterative adiabatic theorem reproduces Bloch's perturbation theory in the unitary case, and is therefore a full generalization to open systems. We furthermore prove the equivalence of the Schrieffer-Wolff and des Cloiseaux approaches in the unitary case and generalize both to arbitrary open systems, showing that they share the eternal adiabaticity, and providing explicit error bounds. Finally we discuss the physical structure of the effective adiabatic generators and show that ideal effective generators for open systems do not exist in general.
description: 24 pages, 2 figures
Les droits fondamentaux: nouveaux outils pour les fiscalistes
Creators: name: Cavalier, Georges
name: Di Nuzzo, Rocco
Publisher: name: Studi Urbinati, A - Scienze giuridiche, politiche ed economiche
Year: 2019

description: Sommaire : 1. Le contexte général : les droits fondamentaux vus comme un rocher. – 2. Les outils internationaux. – 2.1. Première sous-partie : Conseil de l’Europe et Convention européenne de sauvegarde des droits de l’Homme et des libertés fondamentales (Cour de Strasbourg). – 2.2 Deuxième sous-partie : Libertés de l’Union européenne et Cour de Justice de Luxembourg. – 3. Les outils constitutionnels. – 4. Conclusions.
description: Studi Urbinati, A - Scienze giuridiche, politiche ed economiche, V. 69, N. 3-4 (2018): Sessant'anni di studi giuridici europei a Urbino: il Séminaire de Droit Européen
Covariant quantization of infinite spin particle models, and higher order gauge theories
Creators: name: Edgren, Ludde
name: Marnelius, Robert
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Further properties of a recently proposed higher order infinite spin particle model are derived. Infinitely many classically equivalent but different Hamiltonian formulations are shown to exist. This leads to a condition of uniqueness in the quantization process. A consistent covariant quantization is shown to exist. Also a recently proposed supersymmetric version for half-odd integer spins is quantized. A general algorithm to derive gauge invariances of higher order Lagrangians is given and applied to the infinite spin particle model, and to a new higher order model for a spinning particle which is proposed here, as well as to a previously given higher order rigid particle model. The latter two models are also covariantly quantized.
description: 38 pages, Latex
Frustration effects in antiferromagnets on planar random graphs
Creators: name: Weigel, Martin
name: Johnston, Des
Publisher: name: arXiv
Year: 2007
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We consider the effect of geometric frustration induced by the random distribution of loop lengths in the "fat" graphs of the dynamical triangulations model on coupled antiferromagnets. While the influence of such connectivity disorder is rather mild for ferromagnets in that an ordered phase persists and only the properties of the phase transition are substantially changed in some cases, any finite-temperature transition is wiped out due to frustration for some of the antiferromagnetic models. A wealth of different phenomena is observed: while for the annealed average of quantum gravity some graphs can adapt dynamically to allow the emergence of a Neel ordered phase, this is not possible for the quenched average, where a zero-temperature spin-glass phase appears instead. We relate the latter to the behaviour of conventional spin-glass models coupled to random graphs.
description: v3: 9 pages, 10 figures, RevTex4, two figures added, discussion of graph ensembles and disorder averages expanded, estimate of fractal dimension updated v2: 8 pages, 8 figures, RevTex4, two figures added, submitted to Phys. Rev. B v1: 16 pages, 6 figures
title: Nonlinear multiscale simulation of instabilities due to growth of an elastic film on a microstructured substrate
Creators: name: Valizadeh, Iman
name: Weeger, Oliver
Publisher: name: Springer
Year: 2021

description: The objective of this contribution is the numerical investigation of growth-induced instabilities of an elastic film on a microstructured soft substrate. A nonlinear multiscale simulation framework is developed based on the FE2 method, and numerical results are compared against simplified analytical approaches, which are also derived. Living tissues like brain, skin, and airways are often bilayered structures, consisting of a growing film on a substrate. Their modeling is of particular interest in understanding biological phenomena such as brain development and dysfunction. While in similar studies the substrate is assumed as a homogeneous material, this contribution considers the heterogeneity of the substrate and studies the effect of microstructure on the instabilities of a growing film. The computational approach is based on the mechanical modeling of finite deformation growth using a multiplicative decomposition of the deformation gradient into elastic and growth parts. Within the nonlinear, concurrent multiscale finite element framework, on the macroscale a nonlinear eigenvalue analysis is utilized to capture the occurrence of instabilities and corresponding folding patterns. The microstructure of the substrate is considered within the large deformation regime, and various unit cell topologies and parameters are studied to investigate the influence of the microstructure of the substrate on the macroscopic instabilities. Furthermore, an analytical approach is developed based on Airy’s stress function and Hashin–Shtrikman bounds. The wavelengths and critical growth factors from the analytical solution are compared with numerical results. In addition, the folding patterns are examined for two-phase microstructures and the influence of the parameters of the unit cell on the folding pattern is studied.
title: Оценка распространения сигнала LTE на сложной по рельефу загородной трассе с учетом хвойного леса
title: Evaluation of the LTE Signal Propagation Along the Highway with a Difficult Terrain in a Coniferous Forest
Creators: name: Вегера, Денис Владимирович
name: Жиба, Григорий Вячеславович
name: Писаренко, Валерий Павлович
name: Сай, Сергей Владимирович
Publisher: name: Издательский центр СурГУ
Year: 2021

description: Статья посвящена оценке распространения радиоволн для стандарта LTE в диапазоне 1 800 и 2 600 МГц. Представлен расчет затухания сигнала для сложной по рельефу трассы с хвойным лесом. Имитационное моделирование осуществлялось с помощью среды MatLab для сопоставления теоретических и практических результатов.
description: The article is devoted to the evaluation of radio waves propagation for the LTE standard in the 1 800 to 2 600 MHz band. The attenuation is calculated for the highway with a difficult terrain in a coniferous forest. Simulated modeling is carried out using MatLab environment to compare theoretical and practical results.
A highly non-Keplerian protoplanetary disc: Spiral structure in the gas disc of CQ Tau
Creators: name: Wölfer, Lisa
name: Facchini, Stefano
name: Kurtovic, Nicolas T.
name: Teague, Richard
name: van Dishoeck, Ewine F.
name: Benisty, Myriam
name: Ercolano, Barbara
name: Lodato, Giuseppe
name: Miotello, Anna
name: Rosotti, Giovanni
name: Testi, Leonardo
name: Gabellini, Maria Giulia Ubeira
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In the past years, high angular resolution observations have revealed that circumstellar discs appear in a variety of shapes with diverse substructures being ubiquitous. This has given rise to the question of whether these substructures are triggered by planet-disc interactions. Besides direct imaging, one of the most promising methods to distinguish between different disc shaping mechanisms is to study the kinematics of the gas disc. In particular, the deviations of the rotation profile from Keplerian velocity can be used to probe perturbations in the gas pressure profile that may be caused by embedded planets. In this paper we aim to analyze the gas brightness temperature and kinematics of the transitional disc around the CQ Tau star in order to resolve and characterize substructure in the gas, caused by possible perturbers. For our analysis we use spatially resolved ALMA observations of 12CO, 13CO and C18O (J=2-1). We further extract robust line centroids for each channel map and fit a number of Keplerian disc models to the velocity field. The gas kinematics of the CQ Tau disc present non-Keplerian features, showing bent and twisted iso-velocity curves in 12CO and 13CO. Significant spiral structures are detected between 10-180 au in both the brightness temperature and the rotation velocity of 12CO after subtraction of an azimuthally symmetric model, which may be tracing planet-disc interactions with an embedded planet or low-mass companion. We identify three spirals, two in the brightness temperature and one in the velocity residuals, spanning a large azimuth and radial extent. The brightness temperature spirals are morphologically connected to spirals observed in NIR scattered light in the same disc, indicating a common origin. Together with the observed large dust and gas cavity, the spirals support the hypothesis of a massive embedded companion in the CQ Tau disc.
description: 16 pages, 15 figures; accepted for publication in A&A
Food Governance, Food Law and the Third Level in the Hierarchy of Norms
Creators: name: Karsten, Jens
Publisher: name: Studi Urbinati, A - Scienze giuridiche, politiche ed economiche
Year: 2019

description: Summary: 1. Introduction. – 2. Food Law. – 2.1. Pillars of Food Law. – 2.2. Development of Food Law. – 2.3. Food law – An attempt to give Union law a structure and to relate it to relevant Italian law. – 2.4. Food 2030 - Food 2050. – 2.5. Case study: Parma Ham – a very Italian contribution to European food law. – 3. Tertiary Law. – 3.1. Comitology. – 3.2. Delegated acts. – 3.3. Implementing acts. – 3.4. Useful web-links. – 4. Food Governance.
description: Studi Urbinati, A - Scienze giuridiche, politiche ed economiche, V. 69, N. 3-4 (2018): Sessant'anni di studi giuridici europei a Urbino: il Séminaire de Droit Européen
Twistors and Black Holes
Creators: name: Neitzke, Andrew
name: Pioline, Boris
name: Vandoren, Stefan
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Motivated by black hole physics in N=2, D=4 supergravity, we study the geometry of quaternionic-Kahler manifolds M obtained by the c-map construction from projective special Kahler manifolds M_s. Improving on earlier treatments, we compute the Kahler potentials on the twistor space Z and Swann space S in the complex coordinates adapted to the Heisenberg symmetries. The results bear a simple relation to the Hesse potential Σof the special Kahler manifold M_s, and hence to the Bekenstein-Hawking entropy for BPS black holes. We explicitly construct the ``covariant c-map'' and the ``twistor map'', which relate real coordinates on M x CP^1 (resp. M x R^4/Z_2) to complex coordinates on Z (resp. S). As applications, we solve for the general BPS geodesic motion on M, and provide explicit integral formulae for the quaternionic Penrose transform relating elements of H^1(Z,O(-k)) to massless fields on M annihilated by first or second order differential operators. Finally, we compute the exact radial wave function (in the supergravity approximation) for BPS black holes with fixed electric and magnetic charges.
description: 47 pages, v2: typos corrected, reference added, v3: minor changes
title: Nonlinear multiscale simulation of elastic beam lattices with anisotropic homogenized constitutive models based on artificial neural networks
Creators: name: Gärtner, Til
name: Fernández, Mauricio
name: Weeger, Oliver
Publisher: name: Springer
Year: 2021

description: A sequential nonlinear multiscale method for the simulation of elastic metamaterials subject to large deformations and instabilities is proposed. For the finite strain homogenization of cubic beam lattice unit cells, a stochastic perturbation approach is applied to induce buckling. Then, three variants of anisotropic effective constitutive models built upon artificial neural networks are trained on the homogenization data and investigated: one is hyperelastic and fulfills the material symmetry conditions by construction, while the other two are hyperelastic and elastic, respectively, and approximate the material symmetry through data augmentation based on strain energy densities and stresses. Finally, macroscopic nonlinear finite element simulations are conducted and compared to fully resolved simulations of a lattice structure. The good agreement between both approaches in tension and compression scenarios shows that the sequential multiscale approach based on anisotropic constitutive models can accurately reproduce the highly nonlinear behavior of buckling-driven 3D metamaterials at lesser computational effort.
Grounds for Refusal of Recognition of Foreign Judgment: Developments and Perspectives in EU Member States on Public Order and Conflicting Decisions
Creators: name: Giussani, Andrea
Publisher: name: Studi Urbinati, A - Scienze giuridiche, politiche ed economiche
Year: 2019

description: Summary: 1. Converging notions of procedural public order. – 2. Developments in notions of substantive public order. – 3. Conflicting decisions. – 3.1. Conflict with local decision. – 3.2. Conflicts between local provisional remedy and EU judgment. – 3.3. Conflicts between local appealable judgment and foreign res iudicata. – 3.4. Conflicts between local res iudicata and foreign res iudicata. – 3.5. Conflicts between foreign non-EU decisions. – 3.6. Conflicts between foreign EU decisions. – 3.7. Conflicts between foreign EU and non-EU decisions. – 3.8. Final remarks.
description: Studi Urbinati, A - Scienze giuridiche, politiche ed economiche, V. 69, N. 3-4 (2018): Sessant'anni di studi giuridici europei a Urbino: il Séminaire de Droit Européen
Phase transition in a static granular system
Creators: name: Schröter, Matthias
name: Nägle, Sibylle
name: Radin, Charles
name: Swinney, Harry L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We find that a column of glass beads exhibits a well-defined transition between two phases that differ in their resistance to shear. Pulses of fluidization are used to prepare static states with well-defined particle volume fractions $ϕ$ in the range 0.57-0.63. The resistance to shear is determined by slowly inserting a rod into the column of beads. The transition occurs at $ϕ=0.60$ for a range of speeds of the rod.
description: 4 pages, 4 figures. The paper is significantly extended, including new data
The influence of segmentation on rapid scene categorization
Creators: name: Mullin, Caitlin
name: De-Wit, Lee
name: Beeck, Hans Op De
name: Wagemans, Johan
name: Kubilius, Jonas
Publisher: name: F1000Research
Year: 2015

description: Scene categorization is performed extremely rapidly suggesting that an efficient, feedforward coding system is in place. Converging evidence from behavioral, neural, and computational investigations indicate that this system may rely on the extraction of simple features and does not require the segmentation of these features into coherent objects, or surfaces. This is consistent with the idea that image segmentation is a computationally expensive process requiring feedback. However, are there truly no grouping and image segmentation processes occurring during the fast feedforward processing?

In a series of three experiments, we investigated the influence of segmentation cues on scene categorization. We presented participants with two scenes divided into four parts using different segmentation cues displayed for 300 ms prior to image onset. These cues established either a congruent (supporting the correct image segmentation into two scenes) or incongruent (prompting observers to incorrectly group scene segments) segmentation. Participants were less accurate in scene categorization when incongruent segmentation cues were presented, indicating the segmentation can influence categorization. Moreover, the effect remained robust even when the cues were presented concurrently with the images, suggesting that, whilst scene categorization might be rapid, it can also be influenced by segmentation mechanisms
Le régime fiscal des industries minières au Mali : Evolution et défis
Creators: name: Ousmane DOUCOURE
name: Moussa DIALLO
Publisher: name: Zenodo
Year: 2024

description: Dans un contexte économique caractérisé par l’augmentation de la participation de l’Etat au capital des sociétés minières et la création de société nationale d’exploration et d’exploitation des ressources minérales, plusieurs réformes ont été introduites dans le régime fiscal minier au Mali. L’objectif de cette recherche est d’analyser l’évolution du régime fiscal minier et d’identifier les défis auxquels le régime fiscal minier doit relever afin d’assurer des recettes supplémentaires pour l’Etat. En adoptant la méthode de la revue documentaire, les  résultats indiquent que pour assurer des recettes fiscales supplémentaires pour l’Etat, le régime fiscal minier doit relever des  défis relatifs  à la réduction du champ de la clause de stabilité, la détermination du niveau optimal des redevances, les risques liés  à la gestion  de la nouvelle société d’exploration et d’exploitation des ressources minérales (SONAREM), particulièrement le risque lié à la production de nouvelles recettes sous forme de dividendes,  le risque lié aux objectifs commerciaux et à la production de recettes, la forme juridique appropriée de la SONAREM et le renforcement de la capacité de l’administration fiscale.
Towards an ‘Airbus of the Land Systems Sector’? Recent Developments and Market Concentration in the European Armoured Vehicle Industry
Creators: name: Kleczka, Mitja
name: Buts, Caroline
name: Jegers, Marc
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Science Policy

description: Despite considerable restructuring since the end of the Cold War, the European armoured vehicle industry remains largely fragmented along national lines. As stagnating domestic budgets, rising R&D and production costs and the limits of export-focused industrial strategies provide an economic imperative for further consolidation, the merger of Nexter and Krauss-Maffei Wegmann in 2015 has often been regarded as a mere starting point for a wider trans-European reorganisation process which could even result in a land-based equivalent to Airbus. This article proposes a new classification system to identify the ‘prime competitors’ of the European armoured vehicle industry and debates prospects for further consolidation among them. By means of a volume-based variant of the HHI, concentration in European procurement of armoured vehicles is estimated and various merger simulations are conducted. The results suggest that, while the European armoured vehicle industry will likely experience further consolidation, this process will probably be too small in scope to create an ‘Airbus of the land systems sector’. In the medium to long term, however, market pressures and collaborative programmes such as the Main Ground Combat System might have the potential to create a ‘European champion’ in selected subsectors of the armoured vehicle industry.
Cold Atom Physics Using Ultra-Thin Optical Fibers: Light-Induced Dipole Forces and Surface Interactions
Creators: name: Sagué, G.
name: Vetsch, E.
name: Alt, W.
name: Meschede, D.
name: Rauschenbeutel, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The strong evanescent field around ultra-thin unclad optical fibers bears a high potential for detecting, trapping, and manipulating cold atoms. Introducing such a fiber into a cold atom cloud, we investigate the interaction of a small number of cold Caesium atoms with the guided fiber mode and with the fiber surface. Using high resolution spectroscopy, we observe and analyze light-induced dipole forces, van der Waals interaction, and a significant enhancement of the spontaneous emission rate of the atoms. The latter can be assigned to the modification of the vacuum modes by the fiber.
description: 4 pages, 4 figures
Representation of Uniform Boundedness Principle and Hahn-Banach Theorem in linear n-normed space
Creators: name: Ghosh, Prasenjit
name: Samanta, T. K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 46A70, 46B20, 46B25, 41A65

description: The concept of b-linear functional and its different types of continuity in linear n-normed space are presented and some of their properties are being established. We derive the Uniform Boundedness Principle and Hahn-Banach extension Theorem with the help of bounded b-linear functionals in the case of linear n-normed spaces and discuss some examples and applications. Finally, we present the concept of weak*convergence for the sequence of bounded b-linear functionals in linear n-normed space.
description: 22 pages. arXiv admin note: text overlap with arXiv:2101.00653
The trypanosome Lotmaria passim prevails in honey bees of different ages and stages of development
Creators: name: Arismendi, Nolberto
name: Castro, María Paz
name: Vargas, Marisol
name: Zapata, Camila
name: Riveros, Gustavo
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: The gut parasite Lotmaria passim has recently been identified in Apis mellifera and appears to be the predominant trypanosome in honey bees worldwide, but there is little information about L. passim in honey bees of different ages and stages of development. We evaluated the prevalence and load of L. passim in eggs, young and old larvae, dark pupae, newly emerged, nurse and forager bees from colonies that were L. passim-positive. The use of real-time PCR enabled us to detect L. passim, ranging from 21 to 100% in honey bees of almost all stages and ages, with loads ranging from 1.91 x 101 to 7.39 x 105 cells equivalent per bee. This is the first study that reports L. passim in honey bees of different ages and stages of development. We also found an absence of L. passim in eggs, which discards a possible transovarial transmission of this pathogen, although further validations are required. Our findings provide new perspectives for studies on the epidemiology of L. passim in honey bees and other insect pollinators.
Strong magnetic scattering from TiO$_{x}$ adhesion layers
Creators: name: Trionfi, A.
name: Lee, S.
name: Natelson, D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Electronic phase coherence in normal metals is incredibly sensitive to magnetic scattering. As a result, the weak localization magnetoresistance and time-dependent universal conductance fluctuations are powerful probes of magnetic impurities. We report measurements of these effects in Au and Ag nanowires with a 1.5 nm thick Ti adhesion layer underneath the deposited metal. The results indicate an anomalously large magnetic impurity concentration due to the Ti layer. Results suggest that this magnetic scattering and its evolution are related to the oxidation state of the Ti.
description: 3 pages, 3 figures, Appl. Phys. Lett., in press
Acesso Aberto e Conhecimentos Tradicionais
Creators: name: Simonetti Barbalho, Célia
name: Oliveira Inomata, Danielly
name: Zimba, Horácio Francisco
name: Cangy Mussá, Irzelinda
name: Waete, Ranito
Publisher: name: Zenodo
Year: 2024

description: Apresentação realizada na sessão “Workshop 5”, da 15ª Conferência Lusófona de Ciência Aberta, na Escola Superior de Enfermagem do Porto (ESEP), de 01 a 04 de outubro de 2024.
The AGN fuelling/feedback cycle in nearby radio galaxies III. 3D relative orientations of radio jets and CO discs and their interaction
Creators: name: Ruffa, I.
name: Laing, R. A.
name: Prandoni, I.
name: Paladino, R.
name: Parma, P.
name: Davis, T. A.
name: Bureau, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: This is the third paper of a series exploring the multi-frequency properties of a sample of eleven nearby low-excitation radio galaxies (LERGs) in the southern sky. We are conducting an extensive study of different galaxy components (stars, dust, warm and cold gas, radio jets) with the aim of better understanding the AGN fuelling/feedback cycle in LERGs. Here we present new, deep, sub-kpc resolution Karl G. Jansky Very Large Array (JVLA) data for five sample sources at 10 GHz. Coupling these data with previously-acquired Atacama Large Millimeter/submillimeter Array (ALMA) CO(2-1) observations and measurements of comparable quality from the literature, we carry out for the first time a full 3D analysis of the relative orientations of jet and disc rotation axes in six FR I LERGs. This analysis shows (albeit with significant uncertainties) that the relative orientation angles span a wide range ($\approx$30$^{\circ}-60^{\circ}$). There is no case where both axes are accurately aligned and there is a marginally significant tendency for jets to avoid the disc plane. Our study also provides further evidence for the presence of a jet-CO disc interaction (already inferred from other observational indicators) in at least one source, NGC 3100. In this case, the limited extent of the radio jets, along with distortions in both the molecular gas and the jet components, suggest that the jets are young, interacting with the surrounding matter and rapidly decelerating.
description: 13 pages, 6 figures, 4 tables. Accepted for publication in MNRAS
Simple methods of analyzing proteins and amino acids in small pollen samples
Creators: name: Nikkeshi, Aoi
name: Kuramitsu, Kazumu
name: Yokoi, Tomoyuki
name: Yamaji, Keiko
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Ecology
subject: 20199 Astronomical and Space Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology

description: For many hymenopteran insects, floral pollen is essential for survival and development. Nutritional analysis of floral pollen is important to understand plant–pollinator interactions. Here, we evaluated a simple method for measuring proteins and amino acids in pollen; it requires samples far smaller than are required by conventional methods. We used a fluorometer for quantitative analysis of protein and investigated its accuracy with small samples (0.01–2.99 mg). Quantitative and qualitative analysis of amino acids was performed by conventional HPLC methods but with smaller samples (0.05–3.0 mg). The two analyses were highly accurate with samples of ≥1.0 mg. Our method allows nutritional analysis of pollen from a wide range of flower species, including those producing only small amounts of pollen, contributing to a better understanding of the interactions between flowers and flower-visiting insects.
Multidimensional operator multipliers
Creators: name: Juschenko, K.
name: Todorov, I. G.
name: Turowska, L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 46L07, 47L25

description: We introduce multidimensional Schur multipliers and characterise them generalising well known results by Grothendieck and Peller. We define a multidimensional version of the two dimensional operator multipliers studied recently by Kissin and Shulman. The multidimensional operator multipliers are defined as elements of the minimal tensor product of several C*-algebras satisfying certain boundedness conditions. In the case of commutative C*-algebras, the multidimensional operator multipliers reduce to continuous multidimensional Schur multipliers. We show that the multipliers with respect to some given representations of the corresponding C*-algebras do not change if the representations are replaced by approximately equivalent ones. We establish a non-commutative and multidimensional version of the characterisations by Grothendieck and Peller which shows that universal operator multipliers can be obtained as certain weak limits of elements of the algebraic tensor product of the corresponding C*-algebras.
description: A mistake in the previous version
Domain wall cosmology and multiple accelerations
Creators: name: Lee, Bum-Hoon
name: Lee, Wonwoo
name: Nam, Siyoung
name: Park, Chanyong
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We classify the cosmological behaviors of the domain wall under junctions between two spacetimes in terms of various parameters: cosmological constants of bulk spacetime, a tension of a domain wall, and mass parameters of the black hole-type metric. Especially, we consider the false-true vacuum type junctions and the domain wall connecting between an inner AdS space and an outer AdS Reissner-Nordstr${\rm \ddot{o}}$m black hole. We find that there exist a solution to the junction equations with an inflation at earlier times and an accelerating expansion at later times.
description: corrected typos, title and sec. 5