cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Light-time computations for the BepiColombo radioscience experiment
Creators: name: Tommei, G.
name: Milani, A.
name: Vokrouhlicky, D.
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The radioscience experiment is one of the on board experiment of the Mercury ESA mission BepiColombo that will be launched in 2014. The goals of the experiment are to determine the gravity field of Mercury and its rotation state, to determine the orbit of Mercury, to constrain the possible theories of gravitation (for example by determining the post-Newtonian (PN) parameters), to provide the spacecraft position for geodesy experiments and to contribute to planetary ephemerides improvement. This is possible thanks to a new technology which allows to reach great accuracies in the observables range and range rate; it is well known that a similar level of accuracy requires studying a suitable model taking into account numerous relativistic effects. In this paper we deal with the modelling of the space-time coordinate transformations needed for the light-time computations and the numerical methods adopted to avoid rounding-off errors in such computations.
description: 14 pages, 7 figures, corrected references
Theory of frequency-dependent spin current noise through correlated quantum dots
Creators: name: Moca, C. P.
name: Weymann, I.
name: Zarand, G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We analyze the equilibrium and non-equilibrium frequency-dependent spin current noise and spin conductance through a quantum dot in the local moment regime. Spin current correlations are shown to behave markedly differently from charge correlations: Equilibrium spin cross-correlations are suppressed at frequencies below the Kondo scale, and are characterized by a universal function that we determine numerically for zero temperature. For asymmetrical quantum dots dynamical spin accumulation resonance is found for frequencies of the order of the Kondo energy. At higher temperatures surprising low-frequency anomalies related to overall spin conservation appear.
From core rigidities to dynamic capabilities: the role of external knowledge. A multiple case study
Creators: name: Carli, Giacomo <1984>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: ING-IND/35 Ingegneria economico-gestionale

description: This study focuses on the processes of change that firms undertake to overcome conditions of organizational rigidity and develop new dynamic capabilities, thanks to the contribution of external knowledge. When external contingencies highlight firms’ core rigidities, external actors can intervene in change projects, providing new competences to firms’ managers. Knowledge transfer and organizational learning processes can lead to the development of new dynamic capabilities. Existing literature does not completely explain how these processes develop and how external knowledge providers, as management consultants, influence them. Dynamic capabilities literature has become very rich in the last years; however, the models that explain how dynamic capabilities evolve are not particularly investigated. Adopting a qualitative approach, this research proposes four relevant case studies in which external actors introduce new knowledge within organizations, activating processes of change. Each case study consists of a management consulting project. Data are collected through in-depth interviews with consultants and managers. A large amount of documents supports evidences from interviews. A narrative approach is adopted to account for change processes and a synthetic approach is proposed to compare case studies along relevant dimensions. This study presents a model of capabilities evolution, supported by empirical evidence, to explain how external knowledge intervenes in capabilities evolution processes: first, external actors solve gaps between environmental demands and firms’ capabilities, changing organizational structures and routines; second, a knowledge transfer between consultants and managers leads to the creation of new ordinary capabilities; third, managers can develop new dynamic capabilities through a deliberate learning process that internalizes new tacit knowledge from consultants. After the end of the consulting project, two elements can influence the deliberate learning process: new external contingencies and changes in the perceptions about external actors.
Large Mixing of Light and Heavy Neutrinos in Seesaw Models and the LHC
Creators: name: He, Xiao-Gang
name: Oh, Sechul
name: Tandean, Jusak
name: Wen, Chung-Cheng
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In the type-I seesaw model the size of mixing between light and heavy neutrinos, nu and N, respectively, is of order the square root of their mass ratio, (m_nu/m_N)^(1/2), with only one generation of the neutrinos. Since the light-neutrino mass must be less than an eV or so, the mixing would be very small, even for a heavy-neutrino mass of order a few hundred GeV. This would make it unlikely to test the model directly at the LHC, as the amplitude for producing the heavy neutrino is proportional to the mixing size. However, it has been realized for some time that, with more than one generation of light and heavy neutrinos, the mixing can be significantly larger in certain situations. In this paper we explore this possibility further and consider specific examples in detail in the context of type-I seesaw. We study its implications for the single production of the heavy neutrinos at the LHC via the main channel q qbar' -> W^* -> l N involving an ordinary charged lepton l. We then extend the discussion to the type-III seesaw model, which has richer phenomenology due to presence of the charged partners of the heavy neutrinos, and examine the implications for the single production of these heavy leptons at the LHC. In the latter model the new kinds of solutions that we find also make it possible to have sizable flavor-changing neutral-current effects in processes involving ordinary charged leptons.
description: 27 pages, 4 figures, general form of mixing matrix included, other minor changes made, main results unchanged, to match published version
The Impacts of Human-Cobot Collaboration on Perceived Cognitive Load and Usability during an Industrial Task: An Exploratory Experiment
Creators: name: Fournier, Étienne
name: Kilgus, Dorilys
name: Landry, Aurélie
name: Hmedan, Belal
name: Pellier, Damien
name: Fiorino, Humbert
name: Jeoffrion, Christine
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Since cobots (collaborative robots) are increasingly being introduced in industrial environments, being aware of their potential positive and negative impacts on human collaborators is essential. This study guides occupational health workers by identifying the potential gains (reduced perceived time demand, number of gestures and number of errors) and concerns (the cobot takes a long time to perceive its environment, which eads to an increased completion time) associated with working with cobots. In our study, the collaboration between human and cobot during an assembly task did not negatively impact perceived cognitive load, increased completion time (but decreased perceived time demand), and decreased the number of gestures performed by participants and the number of errors made. Thus, performing the task in collaboration with a cobot improved the user's experience and performance, except for completion time, which increased. This study opens up avenues to investigate how to improve cobots to ensure the usability of the human-machine system at work.
description: 12 pages
Quantum-Inspired Keyword Search on Multi-Model Databases
Creators: name: Yuan, Gongsheng
name: Lu, Jiaheng
name: Su, Peifeng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: With the rising applications implemented in different domains, it is inevitable to require databases to adopt corresponding appropriate data models to store and exchange data derived from various sources. To handle these data models in a single platform, the community of databases introduces a multi-model database. And many vendors are improving their products from supporting a single data model to being multi-model databases. Although this brings benefits, spending lots of enthusiasm to master one of the multi-model query languages for exploring a database is unfriendly to most users. Therefore, we study using keyword searches as an alternative way to explore and query multi-model databases. In this paper, we attempt to utilize quantum physics's probabilistic formalism to bring the problem into vector spaces and represent events (e.g., words) as subspaces. Then we employ a density matrix to encapsulate all the information over these subspaces and use density matrices to measure the divergence between query and candidate answers for finding top-\textit{k} the most relevant results. In this process, we propose using pattern mining to identify compounds for improving accuracy and using dimensionality reduction for reducing complexity. Finally, empirical experiments demonstrate the performance superiority of our approaches over the state-of-the-art approaches.
description: 16 pages, 5 figures, Dasfaa
The calibration of a portable induction magnetometer system
Creators: name: Zambresky, Liana
Publisher: name: University of British Columbia
Year: 2010

description: An investigation made concerning the characteristics of a sensor coil for an induction magnetometer shows that it is feasible to make the first stage 60 Hertz rejection filter of the Butterworth type. This is an improvement in design over the Twin-T filter which is sometimes used as a first stage filter as the number of electrical components is reduced and there is no possibility of ringing between the coil inductor and the filter capacitors. Two methods of relative calibration for the induction magnetometer system give reliable response curves. One method uses a Wheatstone bridge. The sensor is one arm of the bridge and it is shown that the effect of the signal generator is the same as if the coil was excited by a natural event. The second method involves exciting the sensor by a field created by a small secondary coil. The agreement between the two methods is good. An experimental approach to the absolute calibration is successfully carried out by comparing the output from the uncalibrated system to an air core system which has been previously calibrated. A theoretical approach is used to give a good indication of the sensitivity of the sensor coil. The sensitivity is dependent primarily upon the turn number and the length of the coil.
On symmetric products of curves
Creators: name: Bastianelli, Francesco
Publisher: name: arXiv
Year: 2010
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14E05, 14J29, 14Q10

description: Let C be a smooth complex projective curve of genus g and let X be its second symmetric product. This paper concerns the study of some attempts at extending to X the notion of gonality. In particular, we prove that the degree of irrationality of X is at least g-1 when C is a generic curve, and that the minimum gonality of curves through the generic point of X equals the gonality of C. In order to produce the main results we deal with correspondences on the k-fold symmetric product of C, with some interesting linear subspaces of \mathbb{P}^n enjoying a condition of Cayley-Bacharach type, and with monodromy of rational maps. As an application, we also give new bounds on the ample cone of X when C is a generic curve of genus 5
description: 28 pages
Wireless Sensor Networks for Monitoring Applications
Creators: name: Gezer, Cengiz <1981>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: ING-INF/03 Telecomunicazioni

description: Wireless Sensor Networks (WSNs) are getting wide-spread attention since they became easily accessible with their low costs. One of the key elements of WSNs is distributed sensing. When the precise location of a signal of interest is unknown across the monitored region, distributing many sensors randomly/uniformly may yield with a better representation of the monitored random process than a traditional sensor deployment. In a typical WSN application the data sensed by nodes is usually sent to one (or more) central device, denoted as sink, which collects the information and can either act as a gateway towards other networks (e.g. Internet), where data can be stored, or be processed in order to command the actuators to perform special tasks. In such a scenario, a dense sensor deployment may create bottlenecks when many nodes competing to access the channel. Even though there are mitigation methods on the channel access, concurrent (parallel) transmissions may occur. In this study, always on the scope of monitoring applications, the involved development progress of two industrial projects with dense sensor deployments (eDIANA Project funded by European Commission and Centrale Adritica Project funded by Coop Italy) and the measurement results coming from several different test-beds evoked the necessity of a mathematical analysis on concurrent transmissions. To the best of our knowledge, in the literature there is no mathematical analysis of concurrent transmission in 2.4 GHz PHY of IEEE 802.15.4. In the thesis, experience stories of eDIANA and Centrale Adriatica Projects and a mathematical analysis of concurrent transmissions starting from O-QPSK chip demodulation to the packet reception rate with several different types of theoretical demodulators, are presented. There is a very good agreement between the measurements so far in the literature and the mathematical analysis.
Internal wave turbulence in a stratified fluid with and without eigenmodes of the experimental domain
Creators: name: Lanchon, Nicolas
name: Mora, Daniel Odens
name: Monsalve, Eduardo
name: Cortet, Pierre-Philippe
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We present laboratory experiments on turbulence in a linearly stratified fluid driven by an ensemble of internal gravity waves which approaches statistical homogeneity and axi-symmetry. In a way similar to several recent experimental works, non-linearities develop through the establishment of a set of internal wave modes at discrete frequencies, when the forcing amplitude is increased. We show that the most energetic of these modes are resonant eigenmodes of the fluid domain. The discretization of the energy in frequency and wavenumber associated to the emergence of these modes prevents the flow from approaching a regime described by the Weak/Wave Turbulence Theory, in which a forward cascade carried by a statistical ensemble of weakly non-linear waves in an infinite domain forms an energy continuum in the frequency and wavenumber spaces. We then show that the introduction of slightly tilted panels at the top and at the bottom of the fluid domain allows to inhibit the emergence of the discrete wave modes. In this new configuration, the non-linear regime results in a continuum of energy over one decade of frequencies which is mainly carried by internal gravity waves verifying the dispersion relation. We therefore achieved a turbulent flow approaching a three-dimensional internal wave turbulence regime with no discretization of the energy in the frequency and wavenumber domains. These results constitute a significant step forward in the search of the laboratory observation of a fully-developed weakly-non-linear internal-gravity-wave turbulence.
description: This work was supported by a grant from the Simons Foundation (651461, PPC)
Interatividade em sistemas bioinspirados
Creators: name: Villavicencio, Pablo
Publisher: name: Labfront/UEMG
Year: 2023

description: Neste artigo investigamos como os sistemas bioinspirados, no formato de instalações artísticas, podem ampliar as possibilidades interativas na arte digital/computacional. Analisamos as seguintes obras e artistas: Fractal flowers, 2023, de Miguel Chevalier e Performative ecologies, 2008, de Ruairi Glynn. A primeira obra questiona a natureza na era do artificial e produz um imaginário baseado na observação das plantas, 8 plantas virtuais sobrevivem em 8 monitores de vídeo. Na segunda obra cria-se um ambiente conversacional em que robôs constroem danças em movimento, capazes de interagir com os humanos, são colaborativos entre sí, compartilhando experiência por meio de inteligência artificial. A bioarte está configurada por relações entre arte, a biologia e a tecnologia, e são movimentos artísticos que situam um processo de complexidade e variabilidade a respeito do tempo e o uso computacional de sistemas tais como o software, hardware e o wetware (BERNAL, HERNÁNDEZ-GARCÍA, HERNANDEZ GARCÍA, 2018).
Additional file 1 of Repeatability of radiomics studies in colorectal cancer: a systematic review
Creators: name: Liu, Ying
name: Wei, Xiaoqin
name: Feng, Xu
name: Liu, Yan
name: Feng, Guiling
name: Du, Yong
Publisher: name: figshare
Year: 2023
Subjects: Medicine
Biotechnology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Science Policy
Mental Health

description: Additional file 1.
Fluctuation and dissipation in memoryless open quantum evolutions
Creators: name: Toscano, Fabricio
name: Bosyk, Gustavo M.
name: Zozor, Steeve
name: Portesi, Mariela
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Von Neumann entropy rate for open quantum systems is, in general, written in terms of entropy production and entropy flow rates, encompassing the second law of thermodynamics. When the open-quantum-system evolution corresponds to a quantum dynamical semigroup, we find a decomposition of the infinitesimal generator of the dynamics, that allows to relate the von Neumann entropy rate with the divergence-based quantum Fisher information, at any time. Applied to quantum Gaussian channels that are dynamical semigroups, our decomposition leads to the quantum analog of the generalized classical de Bruijn identity, thus expressing the quantum fluctuation-dissipation relation in that kind of channels. Finally, from this perspective, we analyze how stationarity arises.
Lyapunov-like Conditions of Forward Invariance and Boundedness for a Class of Unstable Systems
Creators: name: Gorban, A.
name: Tyukin, I.
name: Steur, E.
name: Nijmeijer, H.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Dynamical Systems (math.DS)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 35B40, 35B35, 35B41, 93C10, 93C15, 93C41, 34E18, 34E10

description: We provide Lyapunov-like characterizations of boundedness and convergence of non-trivial solutions for a class of systems with unstable invariant sets. Examples of systems to which the results may apply include interconnections of stable subsystems with one-dimensional unstable dynamics or critically stable dynamics. Systems of this type arise in problems of nonlinear output regulation, parameter estimation and adaptive control. In addition to providing boundedness and convergence criteria the results allow to derive domains of initial conditions corresponding to solutions leaving a given neighborhood of the origin at least once. In contrast to other works addressing convergence issues in unstable systems, our results require neither input-output characterizations for the stable part nor estimates of convergence rates. The results are illustrated with examples, including the analysis of phase synchronization of neural oscillators with heterogenous coupling.
The faintest Seyfert radio cores revealed by VLBI
Creators: name: Giroletti, Marcello
name: Panessa, Francesca
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In this letter, we report on dual-frequency European VLBI Network (EVN) observations of the faintest and least luminous radio cores in Seyfert nuclei, going to sub-mJy flux densities and radio luminosities around 10^19 W/Hz. We detect radio emission from the nuclear region of four galaxies (NGC 4051, NGC 4388, NGC 4501, and NGC 5033), while one (NGC 5273) is undetected at the level of ~100 microJy. The detected compact nuclei have rather different radio properties: spectral indices range from steep (alpha>0.7) to slightly inverted (alpha=-0.1), brightness temperatures vary from T_B=10^5 K to larger than 10^7 K and cores are either extended or unresolved, in one case accompanied by lobe-like features (NGC 4051). In this sense, diverse underlying physical mechanisms can be at work in these objects: jet-base or outflow solutions are the most natural explanations in several cases; in the case of the undetected NGC 5273 nucleus, the presence of an advection-dominated accretion flow (ADAF) is consistent with the radio luminosity upper limit.
description: Accepted for publication in ApJ Letters
Additional file 1 of Biodegradable hollow mesoporous organosilica nanotheranostics (HMON) for multi-mode imaging and mild photo-therapeutic-induced mitochondrial damage on gastric cancer
Creators: name: Guo, Weihong
name: Chen, Zhian
name: Chen, Jiajia
name: Feng, Xiaoli
name: Yang, Yang
name: Huang, Huilin
name: Liang, Yanrui
name: Shen, Guodong
name: Liang, Yu
name: Peng, Chao
name: Li, Yanbing
name: Li, Guoxin
name: Huang, Wenhua
name: Zhao, Bingxia
name: Hu, Yanfeng
Publisher: name: figshare
Year: 2020
Subjects: Biochemistry
Medicine
Cell Biology
Molecular Biology
Pharmacology
Biotechnology
Chemical Sciences not elsewhere classified
Science Policy
Cancer

description: Additional file 1. Additional Figures S1–S21.
Lensing reconstruction from PLANCK sky maps: inhomogeneous noise
Creators: name: Hanson, Duncan
name: Rocha, Graca
name: Gorski, Krzysztof
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We discuss the effects of inhomogeneous sky-coverage on CMB lens reconstruction, focusing on application to the recently launched Planck satellite. We discuss the mean-field which is induced by noise inhomogeneities, as well as three approaches to lens reconstruction in this context: an optimal maximum-likelihood approach which is computationally expensive to evaluate, and two suboptimal approaches which are less intensive. The first of these is only sub-optimal at the five per-cent level for Planck, and the second prevents biasing due to uncertainties in the noise model.
description: pdflatex to fix incorrectly rendered plots
title: Actualización de la clasificación de la FIGO para la estadificación del cáncer de endometrio: Implicaciones para el radiólogo.
Creators: name: Martínez Martínez-Losa, María
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: MR
subject: Pelvis
subject: Genital / Reproductive system female

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
-Determinar la utilidad de la RM pélvica para el estadiaje del cáncer endometrial. -Repasar las secuencias y protocolos de RM esenciales para el estadiaje tumoral. -Revisar los cambios establecidos en la clasificación de la FIGO en 2009. -Mostrar...
A generalisation of the deformation variety
Creators: name: Segerman, Henry
Publisher: name: arXiv
Year: 2009
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M50

description: Given an ideal triangulation of a connected 3-manifold with non-empty boundary consisting of a disjoint union of tori, a point of the deformation variety is an assignment of complex numbers to the dihedral angles of the tetrahedra subject to Thurston's gluing equations. From this, one can recover a representation of the fundamental group of the manifold into the isometries of 3-dimensional hyperbolic space. However, the deformation variety depends crucially on the triangulation: there may be entire components of the representation variety which can be obtained from the deformation variety with one triangulation but not another. We introduce a generalisation of the deformation variety, which again consists of assignments of complex variables to certain dihedral angles subject to polynomial equations, but together with some extra combinatorial data concerning degenerate tetrahedra. This "extended deformation variety" deals with many situations that the deformation variety cannot. In particular we show that for any ideal triangulation of a small orientable 3-manifold with a single torus boundary component, we can recover all of the irreducible non-dihedral representations from the associated extended deformation variety. More generally, we give an algorithm to produce a triangulation of a given orientable 3-manifold with torus boundary components for which the same result holds. As an application, we show that this extended deformation variety detects all factors of the PSL(2,C) A-polynomial associated to the components consisting of the representations it recovers.
description: 47 pages, 26 figures. Rewrote introduction and added motivation section based on referee's comments. Rewrote the section on retriangulation, and added new result on small manifolds with a single cusp
Storing Multi-model Data in RDBMSs based on Reinforcement Learning
Creators: name: Yuan, Gongsheng
name: Lu, Jiaheng
name: Zhang, Shuxun
name: Yan, Zhengtong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: How to manage various data in a unified way is a significant research topic in the field of databases. To address this problem, researchers have proposed multi-model databases to support multiple data models in a uniform platform with a single unified query language. However, since relational databases are predominant in the current market, it is expensive to replace them with others. Besides, due to the theories and technologies of RDBMSs having been enhanced over decades, it is hard to use few years to develop a multi-model database that can be compared with existing RDBMSs in handling security, query optimization, transaction management, etc. In this paper, we reconsider employing relational databases to store and query multi-model data. Unfortunately, the mismatch between the complexity of multi-model data structure and the simplicity of flat relational tables makes this difficult. Against this challenge, we utilize the reinforcement learning (RL) method to learn a relational schema by interacting with an RDBMS. Instead of using the classic Q-learning algorithm, we propose a variant Q-learning algorithm, called \textit{Double Q-tables}, to reduce the dimension of the original Q-table and improve learning efficiency. Experimental results show that our approach could learn a relational schema outperforming the existing multi-model storage schema in terms of query time and space consumption.
description: 4 pages, 4 figures, CIKM
Crustal structure from a seismic refraction profile across southern British Columbia
Creators: name: Cumming, William B.
Publisher: name: University of British Columbia
Year: 2010

description: A partially reversed seismic refraction profile utilizing mine blasts as sources was recorded across southern British Columbia from Sparwood to the Highland Valley. The westwardly directed profile consisted of 32 short period seismograms covering 440 km, while the reversed line extended 330 km with 41 seismograms. The FM field tapes were digitized, filtered, and combined into vertical component record sections. Instrument and shot amplitude corrections were applied in order to display the true relative amplitude variation along the profile. As well as geometrical techniques, least squares delay-time methods and disc ray theory synthetic seismograms were used to interpret the data. Where the profile crosses the Rocky Mountain Trench and the Okanagan Valley, the seismic data show arrival time and amplitude anomalies in the approximately 6.0 km/s upper crustal refraction arrivals. An intermediate crustal layer of velocity 7.05 km/s, depth 29 km, and thickness 9 km is defined by second arrival data recorded 100 to 200 km west of the Kaiser shot point. There is poorer evidence, based on data between 80 and 180 km from the Highland Valley shot point, for a layer with a velocity of 7.35 km/s, a depth of 15 to 24 km, and a thickness of 6 to 10 km. The M-discontinuity generally dips to the east from an approximate depth of 33 km near the Highland Valley, to about 42 km just to the west of the Kaiser shot point. The upper mantle velocity is 7.8 km/s between the Okanagan Valley and Kootenay Lake. Delay time interpretations suggest that a 165 km wavelength anomaly in average crustal velocity and/or depth to the mantle occurs in the Eastern Metamorphic Belt. The anomaly is probably associated with a deep transition zone between the Arrow Lakes and Kootenay Lake. The results of the present study are applicable primarily to the eastern Interior Plateaux and the Eastern Metamorphic Belt south of 51°N.
The Information Retrieval Experiment Platform
Creators: name: Fröbe, Maik
name: Reimer, Jan Heinrich
name: MacAvaney, Sean
name: Deckers, Niklas
name: Reich, Simon
name: Bevendorff, Janek
name: Stein, Benno
name: Hagen, Matthias
name: Potthast, Martin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: We integrate ir_datasets, ir_measures, and PyTerrier with TIRA in the Information Retrieval Experiment Platform (TIREx) to promote more standardized, reproducible, scalable, and even blinded retrieval experiments. Standardization is achieved when a retrieval approach implements PyTerrier's interfaces and the input and output of an experiment are compatible with ir_datasets and ir_measures. However, none of this is a must for reproducibility and scalability, as TIRA can run any dockerized software locally or remotely in a cloud-native execution environment. Version control and caching ensure efficient (re)execution. TIRA allows for blind evaluation when an experiment runs on a remote server or cloud not under the control of the experimenter. The test data and ground truth are then hidden from public access, and the retrieval software has to process them in a sandbox that prevents data leaks. We currently host an instance of TIREx with 15 corpora (1.9 billion documents) on which 32 shared retrieval tasks are based. Using Docker images of 50 standard retrieval approaches, we automatically evaluated all approaches on all tasks (50 $\cdot$ 32 = 1,600~runs) in less than a week on a midsize cluster (1,620 CPU cores and 24 GPUs). This instance of TIREx is open for submissions and will be integrated with the IR Anthology, as well as released open source.
description: 11 pages. To be published in the proceedings of SIGIR 2023
Collision Chains among the Terrestrial Planets. II. An Asymmetry between Earth and Venus
Creators: name: Emsenhuber, Alexandre
name: Asphaug, Erik
name: Cambioni, Saverio
name: Gabriel, Travis S. J.
name: Schwartz, Stephen R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: During the late stage of terrestrial planet formation, hit-and-run collisions are about as common as accretionary mergers, for expected velocities and angles of giant impacts. Average hit-and-runs leave two major remnants plus debris: the target and impactor, somewhat modified through erosion, escaping at lower relative velocity. Here we continue our study of the dynamical effects of such collisions. We compare the dynamical fates of intact runners that start from hit-and-runs with proto-Venus at 0.7 AU and proto-Earth at 1.0 AU. We follow the orbital evolutions of the runners, including the other terrestrial planets, Jupiter, and Saturn, in an N-body code. We find that the accretion of these runners can take $\gtrsim$10 Myr (depending on the egress velocity of the first collision) and can involve successive collisions with the original target planet or with other planets. We treat successive collisions that the runner experiences using surrogate models from machine learning, as in previous work, and evolve subsequent hit-and-runs in a similar fashion. We identify asymmetries in the capture, loss, and interchange of runners in the growth of Venus and Earth. Hit-and-run is a more probable outcome at proto-Venus, being smaller and faster orbiting than proto-Earth. But Venus acts as a sink, eventually accreting most of its runners, assuming typical events, whereas proto-Earth loses about half, many of those continuing to Venus. This leads to a disparity in the style of late-stage accretion that could have led to significant differences in geology, composition, and satellite formation at Earth and Venus.
description: 18 pages, 9 figures, 4 tables. Published in PSJ, article available at https://iopscience.iop.org/article/10.3847/PSJ/ac19b1
Collision Chains among the Terrestrial Planets. III. Formation of the Moon
Creators: name: Asphaug, Erik
name: Emsenhuber, Alexandre
name: Cambioni, Saverio
name: Gabriel, Travis S. J.
name: Schwartz, Stephen R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In the canonical model of Moon formation, a Mars-sized protoplanet "Theia" collides with proto-Earth at close to their mutual escape velocity $v_{\rm esc}$ and a common impact angle 45°. The "graze-and-merge" collision strands a fraction of Theia's mantle into orbit, while Earth accretes most of Theia and its momentum. Simulations show that this produces a hot, high angular momentum, silicate-dominated protolunar system, in substantial agreement with lunar geology, geochemistry, and dynamics. However, a Moon that derives mostly from Theia's mantle, as angular momentum dictates, is challenged by the fact that O, Ti, Cr, radiogenic W, and other elements are indistinguishable in Earth and lunar rocks. Moreover, the model requires an improbably low initial velocity. Here we develop a scenario for Moon formation that begins with a somewhat faster collision, when proto-Theia impacts proto-Earth at ~1.2 $v_{\rm esc}$, also around 45°. Instead of merging, the bodies come into violent contact for a half-hour and their major components escape, a "hit-and-run collision." N-body evolutions show that the "runner" often returns ~0.1-1 Myr later for a second giant impact, closer to $v_{\rm esc}$; this produces a postimpact disk of ~2-3 lunar masses in smoothed particle hydrodynamics simulations, with angular momentum comparable to canonical scenarios. The disk ends up substantially inclined, in most cases, because the terminal collision is randomly oriented to the first. Proto-Earth contributions to the silicate disk are enhanced by the compounded mixing and greater energy of a collision chain.
description: 27 pages, 4 figures, 2 tables. Published in PSJ, article available at https://iopscience.iop.org/article/10.3847/PSJ/ac19b2
Chirality scenario of the spin-glass ordering
Creators: name: Kawamura, Hikaru
Publisher: name: arXiv
Year: 2009
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Detailed account is given of the chirality scenario of experimental spin-glass transitions. In this scenario, the spin glass order of weakly anisotropic Heisenberg-like spin-glass magnets including canonical spin glasses are essentially chirality driven. Recent numerical and experimental results are discussed in conjunction with this scenario.
description: Submitted to J. Phys. Soc. Japan "Special Issue on Frustration"
Solving the radial Dirac equations: a numerical odyssey
Creators: name: Silbar, Richard R.
name: Goldman, T.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Computational Physics (physics.comp-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We discuss, in a pedagogical way, how to solve for relativistic wave functions from the radial Dirac equations. After an brief introduction, in Section II we solve the equations for a linear Lorentz scalar potential, V_s(r), that provides for confinement of a quark. The case of massless u and d quarks is treated first, as these are necessarily quite relativistic. We use an iterative procedure to find the eigenenergies and the upper and lower component wave functions for the ground state and then, later, some excited states. Solutions for the massive quarks (s, c, and b) are also presented. In Section III we solve for the case of a Coulomb potential, which is a time-like component of a Lorentz vector potential, V_v(r). We re-derive, numerically, the (analytically well-known) relativistic hydrogen atom eigenenergies and wave functions, and later extend that to the cases of heavier one-electron atoms and muonic atoms. Finally, Section IV finds solutions for a combination of the V_s and V_v potentials. We treat two cases. The first is one in which V_s is the linear potential used in Sec. II and V_v is Coulombic, as in Sec. III. The other is when both V_s and V_v are linearly confining, and we establish when these potentials give a vanishing spin-orbit interaction (as has been shown to be the case in quark models of the hadronic spectrum).
description: 39 pages (total), 23 figures, 2 tables
The Monotone Cumulants
Creators: name: Hasebe, Takahiro
name: Saigo, Hayato
Publisher: name: arXiv
Year: 2009
Subjects: subject: Probability (math.PR)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L53, 46L54, 05A40

description: In the present paper we define the notion of generalized cumulants which gives a universal framework for commutative, free, Boolean, and especially, monotone probability theories. The uniqueness of generalized cumulants holds for each independence, and hence, generalized cumulants are equal to the usual cumulants in the commutative, free and Boolean cases. The way we define (generalized) cumulants needs neither partition lattices nor generating functions and then will give a new viewpoint to cumulants. We define ``monotone cumulants'' in the sense of generalized cumulants and we obtain quite simple proofs of central limit theorem and Poisson's law of small numbers in monotone probability theory. Moreover, we clarify a combinatorial structure of moment-cumulant formula with the use of ``monotone partitions''.
description: 13 pages; minor changes and corrections
Design de Interfaces para o Compartilhamento
Creators: name: Gasparetto, Débora Aita
Publisher: name: Labfront/UEMG
Year: 2023

description: A presente contribuição aborda o desenvolvimento de alguns dos projetos interativos prototipados no laboratório de Interfaces do Desenho Industrial DI/UFSM, inspirados no conceito de economia compartilhada e colaborativa (Chase, 2015; Rifkin, 2014), levando em consideração a empatia (Krznaric, 2015) e as redes complexas da biosfera (Latour, 2020; Morin, 2020). Temos trabalhado no laboratório com problemas reais e buscado viabilizar soluções por meio das tecnologias emergentes. Selecionamos alguns dos projetos desenvolvidos nos últimos anos para ilustrar como os conceitos podem ser abordados de modo interdisciplinar e em vários segmentos, como moda, brinquedos, agricultura, mobilidade urbana e serviço social. Na oportunidade utiliza-se o método projetual especialista para ensino de interfaces 5I's (Gasparetto, 2020). Como resultado obtemos a sensibilização dos alunos que passam pelo laboratório sobre os problemas reais e como podemos contribuir para minimizá-los; além das parcerias interdisciplinares para desenvolvimento e das frustrações na responsabilidade de implementar na selva competitiva do mercado.
Studio e sviluppo di sistemi RFID in banda UHF
Creators: name: Piersanti, Carmine <1978>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: ING-INF/02 Campi elettromagnetici

description: The recent widespread diffusion of radio-frequency identification (RFID) applications operating in the UHF band has been supported by both the request for greater interrogation ranges and greater and faster data exchange.
UHF-RFID systems, exploiting a physical interaction based on Electromagnetic propagation, introduce many problems that have not been fully explored for the previous generations of RFID systems (e.g. HF). Therefore, the availability of reliable tools for modeling and evaluating the radio-communication between Reader and Tag within an RFID radio-link are needed. The first part of the thesis discuss the impact of real environment on system performance. In particular an analytical closed form formulation for the back-scattered field from the Tag antenna and the formulation for the lower bound of the BER achievable at the Reader side will be presented, considering different possible electromagnetic impairments. By means of the previous formulations, of the analysis of the RFID link operating in near filed conditions and of some electromagnetic/system-level co-simulations, an in-depth study of the dimensioning parameters and the actual performance of the systems will be discussed and analyzed, showing some relevant properties and trade-offs in transponder and reader design. Moreover a new low cost approach to extend the read range of the RFID UHF passive systems will be discussed. Within the scope to check the reliability of the analysis approaches and of innovative proposals, some reference transponder antennas have been designed and extensive measurement campaign has been carried out with satisfactory results. Finally, some commercial ad-hoc transponder for industrial application have been designed within the cooperation with Datalogic s.p.a., some guidelines and results will be briefly presented.
Users' ability to perceive misinformation: An information quality assessment approach
Creators: name: Zrnec, Aljaž
name: Poženel, Marko
name: Lavbič, Dejan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Digital information exchange enables quick creation and sharing of information and thus changes existing habits. Social media is becoming the main source of news for end-users replacing traditional media. This also enables the proliferation of fake news, which misinforms readers and is used to serve the interests of the creators. As a result, automated fake news detection systems are attracting attention. However, automatic fake news detection presents a major challenge; content evaluation is increasingly becoming the responsibility of the end-user. Thus, in the present study we used information quality (IQ) as an instrument to investigate how users can detect fake news. Specifically, we examined how users perceive fake news in the form of shorter paragraphs on individual IQ dimensions. We also investigated which user characteristics might affect fake news detection. We performed an empirical study with 1123 users, who evaluated randomly generated stories with statements of various level of correctness by individual IQ dimensions. The results reveal that IQ can be used as a tool for fake news detection. Our findings show that (1) domain knowledge has a positive impact on fake news detection; (2) education in combination with domain knowledge improves fake news detection; and (3) personality trait conscientiousness contributes significantly to fake news detection in all dimensions.
On the Impact of Operators and Populations within Evolutionary Algorithms for the Dynamic Weighted Traveling Salesperson Problem
Creators: name: Bossek, Jakob
name: Neumann, Aneta
name: Neumann, Frank
Publisher: name: arXiv
Year: 2023
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Evolutionary algorithms have been shown to obtain good solutions for complex optimization problems in static and dynamic environments. It is important to understand the behaviour of evolutionary algorithms for complex optimization problems that also involve dynamic and/or stochastic components in a systematic way in order to further increase their applicability to real-world problems. We investigate the node weighted traveling salesperson problem (W-TSP), which provides an abstraction of a wide range of weighted TSP problems, in dynamic settings. In the dynamic setting of the problem, items that have to be collected as part of a TSP tour change over time. We first present a dynamic setup for the dynamic W-TSP parameterized by different types of changes that are applied to the set of items to be collected when traversing the tour. Our first experimental investigations study the impact of such changes on resulting optimized tours in order to provide structural insights of optimization solutions. Afterwards, we investigate simple mutation-based evolutionary algorithms and study the impact of the mutation operators and the use of populations with dealing with the dynamic changes to the node weights of the problem.
An Unsupervised Method for Building Sentence Simplification Corpora in Multiple Languages
Creators: name: Lu, Xinyu
name: Qiang, Jipeng
name: Li, Yun
name: Yuan, Yunhao
name: Zhu, Yi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: The availability of parallel sentence simplification (SS) is scarce for neural SS modelings. We propose an unsupervised method to build SS corpora from large-scale bilingual translation corpora, alleviating the need for SS supervised corpora. Our method is motivated by the following two findings: neural machine translation model usually tends to generate more high-frequency tokens and the difference of text complexity levels exists between the source and target language of a translation corpus. By taking the pair of the source sentences of translation corpus and the translations of their references in a bridge language, we can construct large-scale pseudo parallel SS data. Then, we keep these sentence pairs with a higher complexity difference as SS sentence pairs. The building SS corpora with an unsupervised approach can satisfy the expectations that the aligned sentences preserve the same meanings and have difference in text complexity levels. Experimental results show that SS methods trained by our corpora achieve the state-of-the-art results and significantly outperform the results on English benchmark WikiLarge.