cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Photoinduced modulation of refractive index in Langmuir-Blodgett films of Azo-based H-shaped liquid crystal molecules
Creators: name: Joshi, Ashutosh
name: Gayakwad, Akash
name: V., Manjuladevi
name: Varia, Mahesh C.
name: Kumar, S.
name: Gupta, R. K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences
subject: J.2
subject: 78-05

description: The development of optically active area consisting of organic molecules are essential for the devices like optical switches and waveguides, as it can be easily maneuvered by the application of suitable electromagnetic (EM) waves. In this article, we report the development of a photoactive surface by the deposition of a single layer of Langmuir-Blodgett (LB) film of a novel H-shaped liquid crystal (HLC) molecule. The synthesized HLC molecules possess azo-groups and nitro-groups. The azo-group can be isomerized (trans-cis transformation) by irradiating them with ultraviolet (UV) light. The nitro-group can provide sufficient amphiphilicity to the HLC molecules to form a stable Langmuir monolayer at air-water interface. The Langmuir monolayer of the HLC molecules exhibited gas and liquid-like phases. A single layer of LB film of HLC molecules was deposited on a gold chip of a home-built surface plasmon resonance (SPR) instrument. The azo-groups of the molecules in LB film was excited by UV irradiation leading to a change in morphology due to trans-cis transformation. Such a change in morphology can lead to a miniscule change in refractive index (RI) of the LB film. SPR is a label free and highly sensitive optical phenomenon for the measurement of such changes in RI. In our studies, we found systematic changes in the resonance angle of the LB film of HLC molecules as a function of intensity of the UV irradiation. We measured switch-on and switch-off intensity which may suggest that the LB film of HLC molecules can find applications in optical switches or waveguides.
description: 11 figures, 07 pages
Consistency relations and conservation of $ζ$ in holographic inflation
Creators: name: Garriga, Jaume
name: Urakawa, Yuko
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is well known that, in single clock inflation, the curvature perturbation $ζ$ is constant in time on superhorizon scales. In the standard bulk description this follows quite simply from the local conservation of the energy momentum tensor in the bulk. On the other hand, in a holographic description, the constancy of the curvature perturbation must be related to the properties of the RG flow in the boundary theory. Here, we show that, in single clock holographic inflation, the time independence of correlators of $ζ$ follows from the cut-off independence of correlators of the energy momentum tensor in the boundary theory, and from the so-called consistency relations for vertex functions with a soft leg.
description: 22 pages, 2 figures
ПАРАЗИТАРНЫЕ ПОРАЖЕНИЯ ЖЕЛУДОЧНО-КИШЕЧНОГО ТРАКТА У ДЕТЕЙ, ВЫЗВАННЫЕ ИНВАЗИРОВАНИЕМ ЛЯМБЛИЙ
Creators: name: Ефременко, Евгений
Publisher: name: ООО Цифра
Year: 2023
Subjects: reactive liver changes
pancreas
children
complaints
giardiasis
biliary dyskinesia
реактивные изменения печени
поджелудочной железы
дети
жалобы
лямблиоз
дискинезия желчевыводящих путей

description: Международный научно-исследовательский журнал, Выпуск 9 (135) 2023
Scanning tunneling spectroscopy as a probe of multi-Q magnetic states of itinerant magnets
Creators: name: Gastiasoro, Maria N.
name: Eremin, Ilya
name: Fernandes, Rafael M.
name: Andersen, Brian M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The combination of electronic correlations and Fermi surfaces with multiple nesting vectors can lead to the appearance of complex multi-Q magnetic ground states, hosting unusual states such as chiral density-waves and quantum Hall insulators. Distinguishing single-Q and multi-Q magnetic phases is however a notoriously difficult experimental problem. Here we propose theoretically that the local density of states near a magnetic impurity, whose orientation may be controlled by an external magnetic field, can be used to map out the detailed magnetic configuration of an itinerant system and distinguish unambiguously between single-Q and multi-Q phases. We demonstrate this concept by computing and contrasting the LDOS near a magnetic impurity embedded in three different magnetic ground states relevant to iron-based superconductors -- one single-Q and two double-Q phases. Our results open a promising avenue to investigate complex magnetic configurations in itinerant systems via standard scanning tunneling spectroscopy, without requiring spin-resolved capability.
description: 7 pages, 4 figures, and Supplementary Material
Measurement of the optical dielectric function of transition metal dichalcogenide monolayers: MoS2, MoSe2, WS2 and WSe2
Creators: name: Li, Yilei
name: Chernikov, Alexey
name: Zhang, Xian
name: Rigosi, Albert
name: Hill, Heather M.
name: van der Zande, Arend M.
name: Chenet, Daniel A.
name: Shih, En-Min
name: Hone, James
name: Heinz, Tony F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report a determination of the complex in-plane dielectric function of monolayers of four transition metal dichalcogenides: MoS2, MoSe2, WS2 and WSe2, for photon energies from 1.5 - 3 eV. The results were obtained from reflection spectra using a Kramers-Kronig constrained variational analysis. From the dielectric functions, we obtain the absolute absorbance of the monolayers. We also provide a comparison of the dielectric function for the monolayers with the corresponding bulk materials.
Application of the Allan Variance to Time Series Analysis in Astrometry and Geodesy: A Review
Creators: name: Malkin, Zinovy
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: The Allan variance (AVAR) was introduced 50 years ago as a statistical tool for assessing of the frequency standards deviations. For the past decades, AVAR has increasingly being used in geodesy and astrometry to assess the noise characteristics in geodetic and astrometric time series. A specific feature of astrometric and geodetic measurements, as compared with the clock measurements, is that they are generally associated with uncertainties; thus, an appropriate weighting should be applied during data analysis. Besides, some physically connected scalar time series naturally form series of multi-dimensional vectors. For example, three station coordinates time series $X$, $Y$, and $Z$ can be combined to analyze 3D station position variations. The classical AVAR is not intended for processing unevenly weighted and/or multi-dimensional data. Therefore, AVAR modifications, namely weighted AVAR (WAVAR), multi-dimensional AVAR (MAVAR), and weighted multi-dimensional AVAR (WMAVAR), were introduced to overcome these deficiencies. In this paper, a brief review is given of the experience of using AVAR and its modifications in processing astro-geodetic time series.
Analysis and implementation of the SNOW 3G generator used in 4G/LTE systems
Creators: name: Molina-Gil, Jezabel
name: Caballero-Gil, Pino
name: Caballero-Gil, Cándido
name: Fúster-Sabater, Amparo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: The fourth generation of cell phones, marketed as 4G/LTE (Long-Term Evolution) is being quickly adopted worldwide. Given the mobile and wireless nature of the involved communications, security is crucial. This paper includes both a theoretical study and a practical analysis of the SNOW 3G generator, included in such a standard for protecting confidentiality and integrity. From its implementation and performance evaluation in mobile devices, several conclusions about how to improve its efficiency are obtained.
description: arXiv admin note: substantial text overlap with arXiv:2208.06147
Using identity-based cryptography in mobile applications
Creators: name: Mora-Afonso, V
name: Caballero-Gil, Pino
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: This work includes a review of two cases study of mobile applications that use Identity-Based Cryptography (IBC) to protect communications. It also describes a proposal of a new mobile application that combines the use of IBC for Wi-Fi or Bluetooth communication between smartphones, with the promising Near Field Communication (NFC) technology for secure authentication. The proposed scheme involves NFC pairing to establish as public key a piece of information linked to the device, such as the phone number, so that this information is then used in an IBC scheme for peer-to-peer communication. This is a work in progress, so the implementation of a prototype based on smartphones is still being improved.
description: arXiv admin note: substantial text overlap with arXiv:2208.03541
Single cohesin molecules generate force by two distinct mechanisms.
Creators: name: Pobegalov, Georgii
name: Chu, Lee-Ya
name: Peters, Jan-Michael
name: Molodtsov, Maxim I
Publisher: name: The Francis Crick Institute
Year: 2023
Subjects: Imaging
Microfabrication & Bioengineering
Structural Biology & Biophysics
Cell Biology
Cell Cycle & Chromosomes

description: Spatial organization of DNA is facilitated by cohesin protein complexes that move on DNA and extrude DNA loops. How cohesin works mechanistically as a molecular machine is poorly understood. Here, we measure mechanical forces generated by conformational changes in single cohesin molecules. We show that bending of SMC coiled coils is driven by random thermal fluctuations leading to a ~32 nm head-hinge displacement that resists forces up to 1 pN; ATPase head engagement occurs in a single step of ~10 nm and is driven by an ATP dependent head-head movement, resisting forces up to 15 pN. Our molecular dynamic simulations show that the energy of head engagement can be stored in a mechanically strained conformation of NIPBL and released during disengagement. These findings reveal how single cohesin molecules generate force by two distinct mechanisms. We present a model, which proposes how this ability may power different aspects of cohesin-DNA interaction.
Bulk viscosity, interaction and the viability of phantom solutions
Creators: name: Leyva, Yoelsy
name: Sepúlveda, Mirko
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the dynamics of a bulk viscosity model in the Eckart approach for a spatially flat Friedmann-Robertson-Walker (FRW) universe. We have included radiation and dark energy, assumed as perfect fluids, and dark matter treated as an imperfect fluid having bulk viscosity. We also introduce an interaction term between the dark matter and dark energy components. Considering that the bulk viscosity is proportional to the dark matter energy density and imposing a complete cosmological dynamics, we find bounds on the bulk viscosity in order to reproduce a matter-dominated era (MDE). This constraint is independent of the interaction term. Some late time phantom solutions are mathematically possible. However, the constraint imposed by a MDE restricts the interaction parameter, in the phantom solutions, to a region consistent with a null value, eliminating the possibility of late time stable solutions with $w
description: 8 pages, 5 figures
Collective Awareness Platforms and Digital Social Innovation Mediating Consensus Seeking in Problem Situations
Creators: name: Badii, Atta
name: Bagnoli, Franco
name: Balazs, Balint
name: Castellani, Tommaso
name: D'Orazio, Davide
name: Ferri, Fernando
name: Grifoni, Patrizia
name: Pacini, Giovanna
name: Serban, Ovidiu
name: Valente, Adriana
Publisher: name: arXiv
Year: 2016
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: In this paper we show the results of our studies carried out in the framework of the European Project SciCafe2.0 in the area of Participatory Engagement models. We present a methodological approach built on participative engagements models and holistic framework for problem situation clarification and solution impacts assessment. Several online platforms for social engagement have been analysed to extract the main patterns of participative engagement. We present our own experiments through the SciCafe2.0 Platform and our insights from requirements elicitation.
Modulation of synaptic plasticity by glutamatergic gliotransmission: A modeling study
Creators: name: De Pittà, Maurizio
name: Brunel, Nicolas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: Glutamatergic gliotransmission, that is the release of glutamate from perisynaptic astrocyte processes in an activity-dependent manner, has emerged as a potentially crucial signaling pathway for regulation of synaptic plasticity, yet its modes of expression and function in vivo remain unclear. Here, we focus on two experimentally well-identified gliotransmitter patwhays: (i)~modulations of synaptic release and (ii)~postynaptic slow inward currents mediated by glutamate released from astrocytes, and investigate their possible functional relevance on synaptic plasticity in a biophysical model of an astrocyte-regulated synapse. Our model predicts that both pathways could profoundly affect both short- and long-term plasticity. In particular, activity-dependent glutamate release from astrocytes, could dramatically change spike-timing--dependent plasticity, turning potentiation into depression (and vice versa) for the same protocol.
description: 55 pages, 7 figures, 1 table
Measurement of spin pumping voltage separated from extrinsic microwave effects
Creators: name: Iguchi, Ryo
name: Saitoh, Eiji
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Conversions between spin and charge currents are core technologies in recent spintronics. In this article, we provide methods for estimating inverse spin Hall effects (ISHEs) induced by using microwave-driven spin pumping (SP) as a spin-current generator. ISHE and SP induce an electromotive force at the ferromagnetic or spin-wave resonance, which offers a valuable electric way to study spin physics in materials. At the resonance, a microwave for exciting the magnetization dynamics induces an additional electromotive force via rf-current rectification and thermoelectric effects. We discuss methods to separate the signals generated from such extrinsic microwave effects by controlling sample structures and configurations. These methods are helpful in performing accurate measurements on ISHE induced by SP, enabling quantitative studies on the conversion between spin and charge currents on various kinds of materials.
Schematron Report Customization
Creators: name: Maus, David
Publisher: name: Zenodo
Year: 2020
Subjects: subject: Schematron
subject: XSLT
subject: XML
subject: gnd:7759942-1
subject: gnd:4613222-3

description: Schematron is a rule-based validation language for making assertions about the presence or absence of patterns in XML trees. SchXslt and the Skeleton both implement Schematron as an XSLT transformation that creates a validation report when applied to a document. During the webinar David will show how to customize the validation report by using a callback API based on the xsl:import instruction. The webinar requires a basic understanding of Schematron and XSLT.
Report with core data elements to collect long term outcomes (D2.7)
Creators: name: Bromley, Rebecca
name: Matthew Bluett -Duncan
name: Yates, Laura
name: Geissbühler, Yvonne
name: Moore, Lan
name: Richardson, Jonathan Luke
name: Stellfelt, Michael
Publisher: name: Zenodo
Year: 2022

description: Report describing core data elements for the collection of pregnancy, immediate child outcomes and longer-term child outcomes in medication exposed pregnancies.
Профилактика интернет-аддикции у подростков с задержкой психического развития
Creators: name: Сообщество рецензентов Международного научно-исследовательского журнала
Publisher: name: ООО Цифра
Year: 2023
Subjects: internet addiction
prevention
diagnosis
teenagers with mental developmental delay
withdrawal symptom
tolerance
abstinence
интернет-аддикция
профилактика
диагностика
подростки с задержкой психического развития
симптом отмены
толерантность
абстиненция

description: Международный научно-исследовательский журнал, Выпуск 9 (135) 2023
Symmetry protected line nodes in non-symmorphic magnetic space groups: Applications to UCoGe and UPd$_2$Al$_3$
Creators: name: Nomoto, Takuya
name: Ikeda, Hiroaki
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present the group-thoretical classification of gap functions in superconductors coexisting with some magnetic order in non-symmorphic magnetic space groups. Based on the weak-coupling BCS theory, we show that UCoGe-type ferromagnetic superconductors must have horizontal line nodes on either $k_z=0$ or $\pmπ/c$ plane. Moreover, it is likely that additional Weyl point nodes exist at the axial point. On the other hand, in UPd$_2$Al$_3$-type antiferromagnetic superconductors, gap functions with $A_g$ symmetry possess horizontal line nodes in antiferromagnetic Brillouin zone boundary perpendicular to $c$-axis. In other words, the conventional fully-gapped $s$-wave superconductivity is forbidden in this type of antiferromagnetic superconductors, irrelevant to the pairing mechanism, as long as the Fermi surface crosses a zone boundary. UCoGe and UPd$_2$Al$_3$ are candidates for unconventional superconductors possessing hidden symmetry-protected line nodes, peculiar to non-symmorphic magnetic space groups.
description: 7 pages, 2 figures
Kratek vodnik po javnih razpisih v okviru delovnega programa Širitev udeležbe in krepitev evropskega raziskovalnega prostora
Creators: name: Mrak, Katja
Publisher: name: Zenodo
Year: 2023

description: Dokument predstavlja neuraden povzetek aktualnih in prihajajočih javnih razpisov od vključno julija 2023 dalje, predstavljenih v delovnem programu 2023-2024 Širitev udeležbe in krepitev evropskega raziskovalnega prostora / Widening participation and strengthening the European Research Area.
Manufactured Turbulence with Langevin equations
Creators: name: Mishra, Aashwin
name: Girimaji, Sharath
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: By definition, Manufactured turbulence(MT) is purported to mimic physical turbulence rather than model it. The MT equations are constrained to be simple to solve and provide an inexpensive surrogate to Navier-Stokes based Direct Numerical Simulations (DNS) for use in engineering applications or theoretical analyses. In this article, we investigate one approach in which the linear inviscid aspects of MT are derived from a linear approximation of the Navier-Stokes equations while the non-linear and viscous physics are approximated via stochastic modeling. The ensuing Langevin MT equations are used to compute planar, quadratic turbulent flows. While much work needs to be done, the preliminary results appear promising.
Results of a Collective Awareness Platforms Investigation
Creators: name: Pacini, Giovanna
name: Bagnoli, Franco
Publisher: name: arXiv
Year: 2016
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: In this paper we provide two introductory analyses of CAPs, based exclusively on the analysis of documents found on the Internet. The first analysis allowed us to investigate the world of CAPs, in particular for what concerned their status (dead or alive), the scope of those platforms and the typology of users. In order to develop a more accurate model of CAPs, and to understand more deeply the motivation of the users and the type of expected payoff, we analysed those CAPs from the above list that are still alive and we used two models developed for what concerned the virtual community and the collective intelligence.
Варианты хирургического лечения пациентов с катарактой и глаукомой, особенности применения фемтосекундного лазера
Creators: name: Ефременко, Евгений
Publisher: name: ООО Цифра
Year: 2023
Subjects: combined pathology of the visual organ
cataract
glaucoma
combined treatment
femtosupplementation
сочетанная патология органа зрения
катаракта
глаукома
комбинированное лечение
фемтосопровождение

description: Международный научно-исследовательский журнал, Выпуск 9 (135) 2023
Analyzing Signal Attenuation in PFG Anomalous Diffusion via a Modified Gaussian Phase Distribution Approximation Based on Fractal Derivative Model
Creators: name: Lin, Guoxing
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Pulsed field gradient (PFG) has been increasingly employed to study anomalous diffusions in Nuclear Magnetic Resonance (NMR) and Magnetic Resonance Imaging (MRI). However, the analysis of PFG anomalous diffusion is complicated. In this paper, a fractal derivative model based modified Gaussian phase distribution method is proposed to describe PFG anomalous diffusion. By using the phase distribution obtained from the effective phase shift diffusion method based on fractal derivatives, and employing some of the traditional Gaussian phase distribution approximation techniques, a general signal attenuation expression for free fractional diffusion is derived. This expression describes a stretched exponential function based attenuation, which is distinct from both the exponential attenuation for normal diffusion obtained from conventional Gaussian phase distribution approximation, and the Mittag-Leffler function based attenuation for anomalous diffusion obtained from fractional derivative. The obtained signal attenuation expression can analyze the finite gradient pulse width (FGPW) effect. Additionally, it can generally be applied to all three types of PFG fractional diffusions classified based on time derivative order alpha and space derivative order beta. These three types of fractional diffusions include time-fractional diffusion, space-fractional diffusion, and general fractional diffusion. The results in this paper are consistent with reported results based on effective phase shift diffusion equation method and instantaneous signal attenuation method. This method provides a new, convenient approximation formalism for analyzing PFG anomalous diffusion experiments.
description: 19 pages, 3 figures, PFG signal attenuation of anomalous diffusion based on fractal derivative model, modified Gaussian phase distribution approximation method, submitted to Physica A and under review
Axially Symmetric Shear-free Fluids in $f(R,T)$ Gravity
Creators: name: Noureen, Ifra
name: Zubair, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work we have discussed the implications of shear-free condition on axially symmetric anisotropic gravitating objects in $f(R,T)$ theory. Restricted axial symmetry ignoring rotation and reflection enteries is taken into account for establishment of instability range. Implementation of linear perturbation on constitutive modified dynamical equations yield evolution equation. This equation associates adiabatic index $Γ$ with material and dark source components defining stable and unstable regions in Newtonian (N) and post-Newtonian (pN) approximations.
description: 22 pages
Airborne Radiometric Surveys and Machine Learning Algorithms for Revealing Soil Texture
Creators: name: Maino, Andrea
name: Alberi, Matteo
name: Anceschi, Emiliano
name: Chiarelli, Enrico
name: Cicala, Luca
name: Colonna, Tommaso
name: De Cesare, Mario
name: Guastaldi, Enrico
name: Lopane, Nicola
name: Mantovani, Fabio
name: Marcialis, Maurizio
name: Martini, Nicola
name: Montuschi, Michele
name: Piccioli, Silvia
name: Raptis, Kassandra Giulia Cristina
name: Russo, Antonio
name: Semenza, Filippo
name: Strati, Virginia
Publisher: name: arXiv
Year: 2022
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Soil texture is key information in agriculture for improving soil knowledge and crop performance, so the accurate mapping of this crucial feature is imperative for rationally planning cultivations and for targeting interventions. We studied the relationship between radioelements and soil texture in the Mezzano Lowland (Italy), a 189 $km^2$ agricultural plain investigated through a ded-icated airborne gamma-ray spectroscopy survey. The K and Th abundances were used to retrieve the clay and sand content by means of a multi-approach method. Linear (simple and multiple) and non-linear (machine learning algorithms with deep neural networks) predictive models were trained and tested adopting a 1:50,000 scale soil texture map. The comparison of these approaches highlighted that the non-linear model introduces significant improvements in the prediction of soil texture fractions. The predicted maps of the clay and of the sand content were compared with the regional soil maps. Although the macro-structures were equally present, the airborne gam-ma-ray data permits us shedding light on finer features. Map areas with higher clay content were coincident with paleo-channels crossing the Mezzano Lowland in Etruscan and Roman periods, confirmed by the hydrographic setting of historical maps and by the geo-morphological features of the study area.
description: 18 pages, 9 figures, 3 tables, correspondence to Andrea Maino via email at maino@fe.infn.it
Non-trivial reputation effects on social decision making in virtual environment
Creators: name: Duradoni, Mirko
name: Bagnoli, Franco
name: Guazzini, Andrea
Publisher: name: arXiv
Year: 2016
Subjects: subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Reputation systems are currently used, often with success, to ensure the functioning of online services as well as of e-commerce sites. Despite the relationship between reputation and material cooperative behaviours is quite supported, less obvious appears the relationship with informative behaviours, which are crucial for the transmission of reputational information and therefore for the maintenance of cooperation among individuals. The purpose of this study was to verify how reputation affects cooperation dynamics in virtual environment, within a social dilemma situation (i.e., where there are incentives to act selfishly). The results confirm that reputation can activate prosocial conducts, however it highlights also the limitations and distortions that reputation can create.
SLANTS: Sequential Adaptive Nonlinear Modeling of Vector Time Series
Creators: name: Han, Qiuyi
name: Ding, Jie
name: Airoldi, Edoardo
name: Tarokh, Vahid
Publisher: name: arXiv
Year: 2016
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: We propose a method for adaptive nonlinear sequential modeling of vector-time series data. Data is modeled as a nonlinear function of past values corrupted by noise, and the underlying non-linear function is assumed to be approximately expandable in a spline basis. We cast the modeling of data as finding a good fit representation in the linear span of multi-dimensional spline basis, and use a variant of l1-penalty regularization in order to reduce the dimensionality of representation. Using adaptive filtering techniques, we design our online algorithm to automatically tune the underlying parameters based on the minimization of the regularized sequential prediction error. We demonstrate the generality and flexibility of the proposed approach on both synthetic and real-world datasets. Moreover, we analytically investigate the performance of our algorithm by obtaining both bounds of the prediction errors, and consistency results for variable selection.
Development of Augmented Reality Application for Made-to-Order Furniture Industry in Pampanga, Philippines
Creators: name: Yambao, Jaymark A.
name: Miranda, John Paul P.
name: Pelayo, Earl Lawrence B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: The focus of the study was to develop a mobile application utilizing marker-less augmented reality for specific made-to-order products to support furniture and fixtures businesses. The study implemented mixed-methodology to properly identify the various stakeholders' considerations in developing the application. Interviews with key informants were conducted to ensure that the features were appropriate for the intended user needs, and selected ISO standards were used as evaluation criteria. The results indicate that the mobile application with marker-less AR technology was found to be highly acceptable by three evaluators (i.e., customers, owners, and IT experts). The study also highlighted the use of AR-related technology in this case, where marker-less has the potential to improve customer purchasing experience even further. Future studies may include using newer technologies to further improve the application. The study suggests that Augmented Reality technology could be used to connect specific businesses directly to consumers regardless of setting or context.
description: 11 pages, 3 figures, journal article, short paper
Structure-Preserving Galerkin POD Reduced-Order Modeling of Hamiltonian Systems
Creators: name: Gong, Yuezheng
name: Wang, Qi
name: Wang, Zhu
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The proper orthogonal decomposition reduced-order models (POD-ROMs) have been widely used as a computationally efficient surrogate models in large-scale numerical simulations of complex systems. However, when it is applied to a Hamiltonian system, a naive application of the POD method can destroy its Hamiltonian structure in the reduced-order model. In this paper, we develop a new reduce-order modeling approach for the Hamiltonian system, which uses the traditional framework of Galerkin projection-based model reduction but modifies the ROM so that the appropriate Hamiltonian structure is preserved. Since the POD truncation can degrade the approximation of the Hamiltonian function, we propose to use the POD basis from shifted snapshots to improve the Hamiltonian function approximation. We further derive a rigorous a priori error estimate of the structure-preserving ROM and demonstrate its effectiveness in several numerical examples. This approach can be readily extended to dissipative Hamiltonian systems, port-Hamiltonian systems etc.
description: 24 pages, 10 figures
H$_α$-activity and ages for stars in the SARG survey
Creators: name: Sissa, E.
name: Gratton, R.
name: Desidera, S.
name: Fiorenzano, A. F. Martinez
name: Bonfanti, A.
name: Carolo, E.
name: Vassallo, D.
name: Claudi, R. U.
name: Endl, M.
name: Cosentino, R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Stellar activity influences radial velocity (RV) measurements and can also mimic the presence of orbiting planets. As part of the search for planets around the components of wide binaries performed with the SARG High Resolution Spectrograph at the TNG, it was discovered that HD 200466A shows strong variation in RV that is well correlated with the activity index based on H$_α$. We used SARG to study the H$_α$ line variations in each component of the binaries and a few bright stars to test the capability of the H$_α$ index of revealing the rotation period or activity cycle. We also analysed the relations between the average activity level and other physical properties of the stars. We finally tried to reveal signals in the RVs that are due to the activity. At least in some cases the variation in the observed RVs is due to the stellar activity. We confirm that H$_α$ can be used as an activity indicator for solar-type stars and as an age indicator for stars younger than 1.5 Gyr.
description: Accepted by A&A, 14 pages, 13 figures
Escape of mass and entropy for geodesic flows
Creators: name: Riquelme, Felipe
name: Velozo, Anibal
Publisher: name: arXiv
Year: 2016
Subjects: subject: Dynamical Systems (math.DS)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 37D40

description: In this paper we study the ergodic theory of the geodesic flow on negatively curved geometrically finite manifolds. We prove that the measure theoretic entropy is upper semicontinuous when there is no loss of mass. In case we are losing mass, the critical exponents of parabolic subgroups of the fundamental group have a significant meaning. More precisely, the failure of upper-semicontinuity of the entropy is determinated by the maximal parabolic critical exponent. We also study the pressure of positive Hölder continuous potentials going to zero through the cusps. We prove that the pressure map $t\mapsto P(tF)$ is differentiable until it undergoes a phase transition, after which it becomes constant. This description allows, in particular, to compute the entropy at infinity of the geodesic flow.
Povos e Culturas, No 20 (2017)
Creators: name: Povos E Culturas
Publisher: name: Povos e Culturas
Year: 2017

description: Nota introdutória...7-7 Nos quarenta anos da autonomia uma reflexão...9-21 Roberto carneiro e o desafio à normalidade em Portugal...515-518 A dinâmica de evolução dos sistemas educativos – um ensaio de interpretação institucional...23-63 O meu compadre Roberto Carneiro...519-524 Educação a distância: emergência cultural...65-96 A labour market integration methodology of vulnerable people – the case of youth neet...97-107 Luanda: uma escala ocasional da carreira da índia, em começo seiscentista. Abusos, conflitos e contrabandos em terra e no mar...109-124 A guerra do mato. Resistência à escravatura e repressão dos fugitivos na ilha de São Tomé (séculos XVI-XVIII)...125-144 Amchi Bhas: o paradoxo linguístico de goa...145-214 A tentativa portuguesa de colonizar Sri Lanka (1580-1630)...215-283 Um cronista esquecido: Francisco de Andrade e as suas obras...285-304 Os governadores civis do distrito de Angra do Heroísmo (1835-1910)...305-334 Fundamentos da análise prospectiva e do planeamento estratégico – ensaio de aplicação à formulação da política educacional...335-397 A reindustrialização da economia portuguesa – breve apresentação...399-478 Um mundo em transe a propósito de três publicações do Centro de Estudos dos Povos e Culturas de Expressão Portuguesa (CEPCEP)...479-495 Um clássico reeditado: o arquipélago dos Açores no século XVII. Aspectos sócio-económicos (1575-1675) de Maria Olímpia da Rocha Gil...497-510
Probabilistic inference of basic stellar parameters: application to flickering stars
Creators: name: Angus, Ruth
name: Kipping, David
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The relations between observable stellar parameters are usually assumed to be deterministic. That is, given an infinitely precise measurement of independent variable, `$x$', and some model, the value of dependent variable, `$y$' can be known exactly. In practise this assumption is rarely valid and intrinsic stochasticity means that two stars with exactly the same `$x$', will have slightly different `$y$'s. The relation between short-timescale brightness fluctuations (flicker) of stars and both surface gravity and stellar density are two such stochastic relations that have, until now, been treated as deterministic ones. We recalibrate these relations in a probabilistic framework, using Hierarchical Bayesian Modelling (HBM) to constrain the intrinsic scatter in the relations. We find evidence for additional scatter in the relationships, that cannot be accounted for by the observational uncertainties alone. The scatter in surface gravity and stellar density does not depend on flicker, suggesting that using flicker as a proxy for $\log g$ and $ρ_\star$ is equally valid for dwarf and giant stars, despite the fact that the observational uncertainties tend to be larger for dwarfs.
ОСОБЕННОСТИ ФАРМАЦЕВТИЧЕСКОЙ ОПЕКИ И СПРОСА ЛЕКАРСТВЕННЫХ ПРЕПАРАТОВ ПРИ КАШЛЕ
Creators: name: Сообщество рецензентов Международного научно-исследовательского журнала
Publisher: name: ООО Цифра
Year: 2023
Subjects: pharmaceutical counselling and information
students
questionnaires
clinical pharmacology
фармацевтическое консультирование и информирование
студенты
анкетирование
клиническая фармакология

description: Международный научно-исследовательский журнал, Выпуск 9 (135) 2023
Wide binaries as co-eval probes of the rotational evolution of low-mass stars
Creators: name: Godoy-Rivera, Diego
name: Mathur, Savita
name: García, Rafael A.
name: Santos, Ângela R. G.
Publisher: name: Zenodo
Year: 2023
Subjects: stars: low-mass
stars: rotation
techniques: photometric
binary stars

description: Rotation plays an important role in the life of stars, and offers a potential diagnostic to infer their ages via gyrochronology. Currently, however, gyrochronology faces critical challenges. Recent results from cluster studies and asteroseismology have shown that stars deviate from a simple Skumanich-type spin-down, and rather follow a more complex evolution with stalling in their rotation rates, gaps in the period vs. temperature diagram, and weakened magnetic braking in stars more evolved than the Sun. A detailed understanding of these phenomena, however, is currently limited by the lack of calibrators at old ages. In this talk, I will demonstrate how wide-separation binaries identified by Gaia can help address these issues. The components of a given binary are co-eval and taken together they can provide exquisite gyrochronology assessments. Particularly, I will discuss the outstanding opportunity that main sequence-white dwarf binaries present for expanding the existing rotational constraints in unprecedented age (and metallicity) regimes. Systems with a white dwarf component can be age-dated through stellar evolution modeling, and this may be complemented with rotation period measurements for their main-sequence companions by using photometric data from space-based missions such as TESS and the upcoming PLATO. In this way, these systems will produce the unprecedented and much-needed age-rotation constraints that are necessary for a thorough understanding of the complex angular momentum evolution of low-mass stars. With the advent of the PLATO mission, this work sets up the stage for decisive spin-down assessments and gyrochronology calibrations in the era of ever-expanding space-based photometry and astrometry.
Counter-propagating spontaneous four wave mixing: photon-pair factorability and ultra-narrowband single photon
Creators: name: Monroy-Ruz, Jorge
name: Garay-Palmett, Karina
name: U'Ren, Alfred B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce a new kind of spontaneous four wave mixing process for the generation of photon pairs, in which the four waves involved counter-propagate in a guided-wave χ^{(3)} medium; we refer to this process as counter-propagating spontaneous four wave mixing (CP-SFWM). We show that for the simplest CP-SFWM source, in which all waves propagate in the same polarization and transverse mode and in which self- and cross-phase modulation effects are negligible, phasematching is attained automatically regardless of dispersion in the fiber or waveguide. Furthermore, we show that in two distinct versions of this source (both pumps pulsed, or one pump pulsed and the remaining one monochromatic), the two-photon state is automatically factorable provided that the length of the nonlinear medium exceeds a certain threshold, easily achievable in practice since this threshold length tends to be in the range of mm to cm. We also show that if one of the pumps approaches the monochromatic limit, and for a sufficient nonlinear medium length, the bandwidth of one of the two photons in a given pair may be reduced to the level of MHz, compatible with electronic transitions for the implementation of atom-photon interfaces, without the use of optical cavities.
description: 27 pages, 7 figures, accepted to New Journal of Physics
title: Povos e Culturas, No 19 (2015): Timor-Leste e Portugal: cinco centúrias de relacionamento
title: Timor-Leste e Portugal: cinco centúrias de relacionamento
titleType: AlternativeTitle
Creators: name: Povos E Culturas
Publisher: name: Povos e Culturas
Year: 2015

description: Artur Teodoro de Matos: uma homenagem...7-14 A saga de Timor-Leste: breve revisitação de um percurso atribulado...25-38 Lendas e narrativas da história da igreja em Timor-Leste...73-136 Os plurilinguismos de Timor-Leste...201-216 Da descolonização inacabada ao limiar da independência...275-298 Proteção social em Timor-Leste...375-382 O processo do desenvolvimento da educação em Timor-Leste. Visão retrospetiva e perspetivas futuras...499-512 Defesa e segurança em Timor-Leste...567-585 Nota introdutória...15-21 Portugal, um parceiro efectivo de Timor-Leste...39-43 Timor: cinco séculos de presença cristã...137-175 Lifau, berço da nacionalidade leste timorense...217-230 Democracia e a independência de Timor-Leste...299-321 Timor-Leste e os desafios do século XXI – o Projeto Mar...383-405 A cooperação sociopolítica – perspetiva e prospetiva, educação e ensino qual o futuro da educação em Timor-Leste?...513-537 Segurança e defesa em Timor-Leste...587-592 Vizinhos, aliados e amigos...45-52 Notícias de Timor nas fontes portuguesas dos séculos XVI e XVII...177-198 Neon Metin, um periódico clandestino em língua portuguesa editado pela Renetil (1989-1996). Contributos para a história do pré-jornalismo independentista em Timor-Leste...231-272 A década mediática de Timor-Leste (1989-99): uma perspetiva do agendamento mediático...323-339 Cooperação sociopolítica – perspetiva e prospetiva luta contra a pobreza e desenvolvimento...407-446 Os caminhos da educação num Timor-Leste independente...539-551 Cooperação militar para a saúde...593-604 Memória de Timor...53-54 Portugal e Timor-Leste: os anos críticos de 1960 a 19991...341-368 Desenvolvimento rural em Timor-Leste...447-460 As universidades e institutos politécnicos portugueses e a construção do ensino superior em Timor-Leste – a contribuição da fundação das universidades portuguesas...553-564 Genealogias de “cruzamentos”. Ambivalência no relacionamento entre timorenses e influências exógenas...55-70 Voga, voga, imor menino, voga...369-371 Formação profissional em Timor-Leste: uma necessidade imperiosa do novo país e um desafio para a cooperação portuguesa...477-496
title: Povos e Culturas, No Especial (2014): Os católicos e o 25 de Abril
title: Os católicos e o 25 de Abril
titleType: AlternativeTitle
Creators: name: Povos E Culturas
Publisher: name: Povos e Culturas
Year: 2014

description: Nota introdutória...9-12 «25 de Abril»: católicos nas contingências do pleno emprego...23-32 D. Sebastião de Rezende, Bispo da Beira – Moçambique...265-267 Igreja e 25 de Abril (ou do vaticano II à democracia portuguesa, como modo de estar e agir do católico na sociedade)...15-20 A dinâmica da Capela Do Rato...33-43 A figura e a acção do Rev. Pe. José da Felicidade Alves...269-274 Das inundações de 1967 à crise de 68/69 no técnico. A intervenção da JUC do técnico...45-52 O Padre Alberto e a Capela do Rato...275-280 A fiel crítica política de um católico: a coerência evangélica de Dom António Ferreira Gomes, antes e depois de Abril...53-68 As semanas de estudo dos Açores...281-283 Leigos católicos e lutas políticas dos anos 50 ao “25 de Abril” – um testemunho...69-84 Os católicos e o 25 de Abril...285-289 Católicos portugueses e democracia...85-94 Adelino Amaro da Costa: visionário, democrata e cristão...291-293 Manuel Gonçalves Cerejeira e o Estado Novo...95-115 Mensagem do Frei Eugénio nos 50 anos do início da guerra colonial em Angola (15.03.1961) em 2011...295-296 Fé e política ou a dimensão do cuidar e a re-significação do espaço público no pensar e agir de Maria de Lourdes Pintasilgo (MLP)...117-137 Testemunho...297-301 Os católicos e o Estado Novo identidade e crise...139-150 Da Ala Liberal ao fim do regime...303-306 O pensamento católico e os fundamentos do estado de direito democrático...151-159 Memória de um rapaz...307-312 Dom Eurico Dias Nogueira...161-168 Adérito Sedas Nunes...313-315 A JUC e a formação da consciência política (1971-1974). Algumas notas...169-178 João Pedro Miller Guerra, cidadão activo, médico, católico...317-336 Surpreendente ousadia do padre Manuel. Bispo de Nampula...179-185 O contributo do princípio personalista do católico Francisco Sá Carneiro, e seus companheiros, para a terceira república...337-344 O 25 de Abril foi possível porque o Estado Novo perdeu o apoio do catolicismo político-social FAS e NEFAS do corporativismo na fórmula política portuguesa (1926-1974)...187-210 Memórias do CASU...345-368 A igreja e a ordem democrática...211-226 A experiência de um advogado (e não só) no 25 de Abril...369-382 Os ensinamentos da doutrina social da igreja na construção do estado democrático e social...227-237 Os católicos na transição democrática: o caso da rádio Renascença e a luta pela liberdade de informação...239-256 A igreja, o antigo e o novo regime...257-262
Constraints from Glitches
Creators: name: Verma, Kuldeep
Publisher: name: Zenodo
Year: 2023

description: The pressure waves trapped inside a solar-type star sense almost the whole medium, and hence their measured properties such as the oscillation frequencies carry detailed information about different layers in the stellar interior. In particular, the frequencies contain small but detectable signatures of the so-called acoustic glitches, the regions of abrupt variation in the sound speed or its derivatives, which can be used to tightly constrain the properties of the regions they originate. For instance, the glitch signatures can be used to measure the locations of the helium ionization zone and the base of the envelope convection zone independent of the stellar evolution models. In this talk, I will summarize the constraints we can obtain on the internal stellar structure and fundamental stellar properties by analysing the helium and convection zone glitch signatures using different theoretical formalisms. Subsequently, I shall demonstrate how the measured helium glitch properties can be used together with the frequency ratios and other classical observables with all the correlations properly taken into account to infer stellar properties including the mass, radius and age precisely. This approach largely avoids the issues related to the surface-effect and, as we shall see, it provides more accurate inference of the stellar helium abundance, and hence also the stellar mass and age.