cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Open problems on structure of positively curved projective varieties
Creators: name: Matsumura, Shin-ichi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 32J25 (Primary), 53C25, 14E30 (Secondary)

description: We provide supplements and open problems related to structure theorems for maximal rationally connected fibrations of certain positively curved projective varieties, including smooth projective varieties with semi-positive holomorphic sectional curvature, pseudo-effective tangent bundle, and nef anti-canonical divisor.
description: 18 pages
Dynamic nuclear polarization from current-induced electron spin polarization
Creators: name: Trowbridge, C. J.
name: Norman, B. M.
name: Kato, Y. K.
name: Awschalom, D. D.
name: Sih, V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Current-induced electron spin polarization is shown to produce nuclear hyperpolarization through dynamic nuclear polarization. Saturated fields of several millitesla are generated upon the application of electric field over a timescale of a hundred seconds in InGaAs epilayers and measured using optical Larmor magnetometry. The dependence on temperature, external magnetic field, and applied voltage is investigated. We find an asymmetry in which the saturation nuclear field depends on the relative alignment of the electrically generated spin polarization and the external magnetic field, which we attribute to an interplay between various electron spin dynamical processes.
description: 5 pages, 4 figures
Relaxation of the single-slip condition in strain-gradient plasticity
Creators: name: Anguige, Keith
name: Dondl, Patrick W.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 74C15, 74C05, 49J45

description: We consider the variational formulation of both geometrically linear and geometrically nonlinear elasto-plasticity subject to a class of hard single-slip conditions. Such side conditions typically render the associated boundary-value problems non-convex. We show that, for a large class of non-smooth plastic distortions, a given single-slip condition (specification of Burgers vectors) can be relaxed by introducing a microstructure through a two-stage process of mollification and lamination. The relaxed model can be thought of as an aid to simulating macroscopic plastic behaviour without the need to resolve arbitrarily fine spatial scales.
description: 15 pages
Quantifying the Fermi paradox in the local Solar neighborhood
Creators: name: Cartin, Daniel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Popular Physics (physics.pop-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The Fermi paradox highlights the dichotomy between the lack of physical contact with other civilizations and the expectation that technological civilizations are assumed likely to evolve in many locations in the Milky Way galaxy, given the large number of planetary systems within this galaxy. Work by Landis and others has modeled this question in terms of percolation theory and cellular automata, using this method to parametrize our ignorance about possible other civilizations as a function of the probability of one system to colonize another, and the maximum number of systems reachable from each starting location (i.e. the degree in the network used for percolation). These models used a fixed lattice of sites to represent a stellar region, so the degree of all sites were identical. In this paper, the question is examined again, but instead of using a pre-determined lattice, the actual physical positions of all known star systems within 40 parsecs of the Solar System are used as percolation sites; in addition, the number of sites accessible for further colonization from a given system is determined by a choice of maximum distance such efforts can travel across. The resulting simulations show that extraterrestrial colonization efforts may reach the Solar System, but only for certain values of the maximum travel distance and probability of an occupied system further colonizing other systems. Indeed, large numbers of systems may be colonized with either vessels that lack insufficient travel distance to reach the Solar System or else have a colonization probability where they are statistically unlikely to reach us.
description: 9 pages, 9 figures, to be published in the Journal of the British Interplanetary Society
PROPOSITION FOR THE ALIGNMENT OF THE INTEGRATED MANAGEMENT SYSTEM (QUALITY, ENVIRONMENTAL AND SAFETY) WITH THE BUSINESS STRATEGY
Creators: name: Barbosa, Luís César F. M.
name: Otávio José De Oliveira
name: Santos, Gilberto
Publisher: name: Center for Quality
Year: 2018
Subjects: Integrated Management System
Business Strategy
Alignment

description: International Journal for Quality Research; Vol 12, No 4, 2018. ISSN 1800-6450
description: With the current globalized and increasingly competitive organizational scenario, organizations increasingly need strategies to survive in the midst of excessive competition. In order to optimize efforts and resources, the companies, especially industrial companies, started to develop their own Integrated Management System (IMS), namely, quality management system, environmental management system and safety management system, among others, as a plausible and efficient alternative in this sense. However, few companies are aware of the difficulties in aligning their IMS as a strategy. This paper is classified as qualitative, and has used the bibliographic research method for its execution. Therefore, the aim of this paper is formulate the propositions that assist the IMS alignment as a business strategy. The results of this paper allow identify that really exists an interaction in both senses, i.e., the IMS influences a strategy and the strategy influences the IMS. The main contribution of this article is to support in the development based on the articulation of the IMS-related theory and business strategy.
Improving Effectiveness of Seamless Redundancy in Real Industrial Wi-Fi Networks
Creators: name: Cena, Gianluca
name: Scanzio, Stefano
name: Valenzano, Adriano
Publisher: name: arXiv
Year: 2022
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Reliability and determinism of Wi-Fi can be tangibly improved by means of seamless redundancy, to the point of making this technology suitable for industrial environments. As pointed out in recent papers, the most benefits can be achieved when no phenomena can simultaneously affect transmissions on all channels of a redundant link. In this paper, several aspects are analyzed which, if not properly counteracted, may worsen seamless redundancy effectiveness. Effects they cause on communication have been experimentally evaluated in real testbeds, which rely on commercial Wi-Fi devices. Then, practical guidelines are provided, which aim at preventing joint interference through a careful system design. Results show that measured communication quality can be made as good as expected in theory.
description: preprint, 13 pages
A non-redundant, reference virus database (RVDB) to facilitate high-throughput sequencing (HTS) bioinformatics analysis for detection of known and novel viruses
Creators: name: Pei-Ju Chin
name: Khan, Arifa
Publisher: name: F1000 Research Limited
Year: 2020

description: Introduction: There are challenges for HTS bioinformatics detection of distantly-related viruses due to limitations of the publicly-available databases, which are not complete with all viral sequences and obscured by the large amount of cellular content. Therefore, we undertook efforts to create a non-redundant, reference viral database (RVDB) that would include all viral-related sequences, with a reduced cellular sequence content. This was done in consultation with the Advanced Virus Detection Technologies Interest Group, which includes scientists from industry, regulatory and other government agencies (including NCBI), technology providers, and academia.

 Methods: The details for developing RVDB have been published [Goodacre et al., mSphere, 2018]. The overall strategy included: a) development of a keyword screen for semantic selection of all viral-related sequences from GenBank, regardless of size; b) verification of viral identity using various bioinformatics tools (BLAST and HMMER); and c) clustering at 98% sequence identity using CD-HIT-EST to remove redundancy.

 Results: RVDB contains complete viral genomes as well as partial viral sequences. The unclustered (U) and clustered (C) versions of RVDB are publicly-available at the University of Delaware RVDB Site (https://rvdb.dbi.udel.edu/). The nucleotidic RVDBs were converted to proteic databases by Marc Eloit and Thomas Bigot (available at http://rvdb-prot.pasteur.fr/ and at the University of Delaware RVDB Site) The updated RVDB v20.0 contains 3,180,577 sequences in U-RVDB and 789,728 sequences in C-RVDB. The python scripts to construct RVDB can be found at GitHub (https://github.com/ArifaKhanLab/RVDB)
 Conclusions: RVDB is expected to enhance HTS bioinformatics for detection of known and distantly-related viruses due to the presence of all viral-related sequences including sub-genomic viral fragments as well as endogenous retroviruses and retrotransposons.
EMPLOYEES' VIEWS ABOUT THE IMPACT OF THE ECONOMIC CRISIS ON OCCUPATIONAL SAFETY AND QUALITY OF LIFE: A PILOT STUDY IN THE NORTH OF PORTUGAL
Creators: name: Vale, Cláudia
name: Rodrigues, Matilde A.
name: Azevedo, Rui
name: Ramos, Delfina
name: Loureiro, Isabel
Publisher: name: Center for Quality
Year: 2018
Subjects: Economic Crisis
Safety
Occupational Risks
Organizations
Workers
Quality of life

description: International Journal for Quality Research; Vol 12, No 4, 2018. ISSN 1800-6450
description: The European Union faced an economic crisis with a significant expression in Portugal. The financial unsustainability of this country led to austerity measures with negative impacts on organizations and families.
The paper aims to analyse the views of the employed population about the influence of crisis on occupational safety, and workers’ quality of life.
A self-completed questionnaire named External Environment Questionnaire (EEQ) was applied in 2013. A total of 510 questionnaires were filled by Portuguese employees of eight cities from the North of Portugal.
The results indicate that the crisis has an important impact in the financial conditions of the workers and an important effect in the job security. Moreover, companies were seen by workers to compromise their safety performance in a crisis period.
A strategy to manage safety issues in a crisis context as well as improve the quality of life of workers is needed.
Reinvestigation of high pressure polymorphism in Hafnium metal
Creators: name: Pandey, K. K.
name: Gyanchandani, Jyoti
name: Somayazulu, M.
name: Dey, G. K.
name: Sharma, Surinder M.
name: Sikka, S. K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: There has been a recent controversy about the high pressure polymorphism of Hafnium (Hf). Unlike, the earlier known α $\rightarrow$ ω structural transition at 38 $\pm$ 8 GPa, Hrubiak et al (2012) did not observe it till 51 GPa. We have reinvestigated the room temperature phase diagram of Hf, employing x-ray diffraction (XRD) and DFT based first principles calculations. Experimental investigations have been carried out on several pure and impure Hf samples and also with different pressure transmitting media. Besides establishing the significant role of impurity levels on the high pressure phase diagram of Hf, our studies do not support the results of Hrubiak et al. (2012). The structural sequence, transition pressures, the lattice parameters, the c/a ratio and its variation with compression for the α and ω phases as predicted by our ab-initio scalar relativistic (SR) calculations are found to be in good agreement with our experimental results of pure Hf.
THE METHODOLOGY FOR SUBSTANTIATING THE MATERIALS HANDLING EQUIPMENT OF A UNIT LOAD WAREHOUSING SYSTEM
Creators: name: Radaev, Anton
name: Leventsov, Valery
Publisher: name: Center for Quality
Year: 2018
Subjects: industrial enterprise
warehouse system
materials handling equipment
technological group
service channel
handling queue
handling capacity
aggregate costs

description: International Journal for Quality Research; Vol 12, No 4, 2018. ISSN 1800-6450
description: The most important objectives of a warehouse system organization design's to substantiate the structure of the materials handling equipment fleet, which directly determines the quality of functioning of the warehouse system in the supply network of industrial enterprises. The complexity of the above objective's preconditioned not only by the existing variety of handling equipment models, but also by a large number of factors affecting the efficiency of the equipment fleet, being determined by the specifics of cargo flows and the space-planning solution of a warehouse. This paper studies the problem of substantiating the optimal number of materials handling equipment units in the composition of various technological groups in a unit load warehouse system. Methodology implies iterative optimization of the equipment quantity according to a criterion of minimization of total aggregate costs caused by equipment maintenance or downtime of transport vehicles with various values of the number of service channels for transport vehicles.
A Conceptual Framework for ERP Evaluation in Universities of Pakistan
Creators: name: Nizamani, Sehrish
name: Khoumbati, Khalil
name: Ismaili, Imdad Ali
name: Nizamani, Saad
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences
subject: H.3.4

description: The higher education has been greatly impacted by worldwide trends. In a result, the universities throughout the world are focusing to enhance performance and efficiency in their workings. Therefore, the higher education has moved their systems to Enterprise Resource Planning (ERP) systems to cope with the needs of changing environment. However, the literature review indicates that there is void on the evaluation of success or failure of ERP systems in higher education Institutes in Pakistan. In overall, ERP systems implementation in higher education of Pakistan has not been given appropriate research focus. Thus, in this paper the authors have attempted to develop a conceptual framework for ERP evaluation in Universities of Pakistan. This seeks to expand the knowledge on ERP in higher educational institutes of Pakistan and focuses on understanding the ERP related critical success factors.
Free agency and determinism: is there a sensible definition of computational sourcehood?
Creators: name: Krumm, Marius
name: Mueller, Markus P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Computational Complexity (cs.CC)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Can free agency be compatible with determinism? Compatibilists argue that the answer is yes, and it has been suggested that the computer science principle of "computational irreducibility" sheds light on this compatibility. It implies that there cannot in general be shortcuts to predict the behavior of agents, explaining why deterministic agents often appear to act freely. In this paper, we introduce a variant of computational irreducibility that intends to capture more accurately aspects of actual (as opposed to apparent) free agency: computational sourcehood, i.e. the phenomenon that the successful prediction of a process' behavior must typically involve an almost-exact representation of the relevant features of that process, regardless of the time it takes to arrive at the prediction. We argue that this can be understood as saying that the process itself is the source of its actions, and we conjecture that many computational processes have this property. The main contribution of this paper is technical: we analyze whether and how a sensible formal definition of computational sourcehood is possible. While we do not answer the question completely, we show how it is related to finding a particular simulation preorder on Turing machines, we uncover concrete stumbling blocks towards constructing such a definition, and demonstrate that structure-preserving (as opposed to merely simple or efficient) functions between levels of simulation play a crucial role.
description: 16 pages, 1 figure
One antimatter --- two possible thermodynamics
Creators: name: Klimenko, A. Y.
name: Maas, U.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Conventional thermodynamics, which is formulated for our world populated by radiation and matter, can be extended to describe physical properties of antimatter in two mutually exclusive ways: CP-invariant or CPT-invariant. Here we refer to invariance of physical laws under charge (C), parity (P) and time reversal (T) transformations. While in quantum field theory CPT invariance is a theorem confirmed by experiments, the symmetry principles applied to macroscopic phenomena or to the whole of the Universe represent only hypotheses. Since both versions of thermodynamics are different only in their treatment of antimatter, but are the same in describing our world dominated by matter, making a clear experimentally justified choice between CP invariance and CPT invariance in context of thermodynamics is not possible at present. This work investigates the comparative properties of the CP- and CPT-invariant extensions of thermodynamics (focusing on the latter, which is less conventional than the former) and examines conditions under which these extensions can be experimentally tested.
description: 20 pages, 4 figures. arXiv admin note: text overlap with arXiv:1209.1982
Oncology and mechanics: landmark studies and promising clinical applications
Creators: name: Urcun, Stéphane
name: Lorenzo, Guillermo
name: Baroli, Davide
name: Rohan, Pierre-Yves
name: Sciumè, Giuseppe
name: Skalli, Wafa
name: Lubrano, Vincent
name: Bordas, Stéphane P. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Tissues and Organs (q-bio.TO)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: Clinical management of cancer has continuously evolved for several decades. Biochemical, molecular and genomics approaches have brought and still bring numerous insights into cancerous diseases. It is now accepted that some phenomena, allowed by favorable biological conditions, emerge via mechanical signaling at the cellular scale and via mechanical forces at the macroscale. Mechanical phenomena in cancer have been studied in-depth over the last decades, and their clinical applications are starting to be understood. If numerous models and experimental setups have been proposed, only a few have led to clinical applications. The objective of this contribution is to propose to review a large scope of mechanical findings which have consequences on the clinical management of cancer. This review is mainly addressed to doctoral candidates in mechanics and applied mathematics who are faced with the challenge of the mechanics-based modeling of cancer with the aim of clinical applications. We show that the collaboration of the biological and mechanical approaches has led to promising advances in terms of modeling, experimental design and therapeutic targets. Additionally, a specific focus is brought on imaging-informed mechanics-based models, which we believe can further the development of new therapeutic targets and the advent of personalized medicine. We study in detail several successful workflows on patient-specific targeted therapies based on mechanistic modeling.
The Supernova-ISM/Star formation Interplay
Creators: name: Hensler, Gerhard
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Supernovae are the most energetic stellar events and influence the interstellar medium by their gasdynamics and energetics. By this, both also affect the star formation positively and negatively. In this paper, we review the complexity of investigations aiming at understanding the interchange between supernova explosions with the star-forming molecular clouds. Commencing from analytical studies the paper advances to numerical models of supernova feedback from superbubble scales to galaxy structure. We also discuss parametrizations of star-formation and supernova-energy transfer efficiencies. Since evolutionary models from the interstellar medium to galaxies are numerous and are applying multiple recipes of these parameters, only a representative selection of studies can be discussed here.
description: 8 pages, 3 pdf fig.s; to be published in Proceedings IAU Symp. No. 296 "Supernova environmental impacts", 2013, eds. A. Ray & R.A. McCray, in press
TEyeD: Over 20 million real-world eye images with Pupil, Eyelid, and Iris 2D and 3D Segmentations, 2D and 3D Landmarks, 3D Eyeball, Gaze Vector, and Eye Movement Types
Creators: name: Fuhl, Wolfgang
name: Kasneci, Gjergji
name: Kasneci, Enkelejda
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: We present TEyeD, the world's largest unified public data set of eye images taken with head-mounted devices. TEyeD was acquired with seven different head-mounted eye trackers. Among them, two eye trackers were integrated into virtual reality (VR) or augmented reality (AR) devices. The images in TEyeD were obtained from various tasks, including car rides, simulator rides, outdoor sports activities, and daily indoor activities. The data set includes 2D and 3D landmarks, semantic segmentation, 3D eyeball annotation and the gaze vector and eye movement types for all images. Landmarks and semantic segmentation are provided for the pupil, iris and eyelids. Video lengths vary from a few minutes to several hours. With more than 20 million carefully annotated images, TEyeD provides a unique, coherent resource and a valuable foundation for advancing research in the field of computer vision, eye tracking and gaze estimation in modern VR and AR applications. Download: Just connect via FTP as user TEyeDUser and without password to nephrit.cs.uni-tuebingen.de (ftp://nephrit.cs.uni-tuebingen.de).
description: Download: Just connect via FTP as user TEyeDUser and without password to nephrit.cs.uni-tuebingen.de (ftp://nephrit.cs.uni-tuebingen.de)
Probing nanoscale deformations of a fluctuating interface
Creators: name: Bickel, Thomas
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We consider the contribution of thermal capillary waves to the interaction between a fluid-fluid interface and a nearby nanoparticle. Fluctuations are described thanks to an effective interaction potential which is derived using the renormalization group. The general theory is then applied to a spherical particle interacting with the interface through van der Waals forces. Surprisingly enough, we find that fluctuations contribute significantly to the deformation profile. Our study therefore reveals that thermal fluctuations cannot be ignored when probing nanoscale deformations of a soft interface.
description: Accepted for publication in Europhysics Letters
Absolute frequency measurement of the $6s^2~^1S_0 \to 6s6p~^3P_1$ $F=3/2\to F'=5/2$ $^{\text{201}}$Hg transition with background-free saturation spectroscopy
Creators: name: Linek, Adam
name: Morzyński, Piotr
name: Witkowski, Marcin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report the development of a method for eliminating background-induced systematic shifts affecting precise measurements of saturation absorption signals. With this technique, we measured the absolute frequency of the $6s^2~^1\text{S}_0 \to 6s6p~^3\text{P}_1$ transition in $^{201a}\text{Hg}$ ($F=3/2\to F'=5/2$) to be $1181541111051(83)$~kHz. The measurement was referenced with an optical frequency comb synchronized to the frequency of the local representation of the UTC. This specific atomic line is situated on the steep slope of the Doppler background at room temperature, which results in frequency systematic shift. We determined the dependence of this shift on the properties of both the spectral line and the background of the measured signal.
description: Copyright 2022 Optica Publishing Group. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved
Quintessence Cosmology with an Effective $Λ$-Term in Lyra Manifold
Creators: name: Khurshudyan, M.
name: Pasqua, A.
name: Sadeghi, J.
name: Farahani, H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we study quintessence cosmology with an effective $Λ$-term in Lyra manifold. We consider three different models by choosing variable $Λ$ depend on time, the Hubble parameter and the energy density of dark matter and dark energy. Dark energy assumed as quintessence which interacts with the dark matter. By using numerical analysis we investigate behavior of cosmological parameters in three different models and compare our results with observational data. Statefinder diagnostic is also performed for all models.
description: 10 pages
Lattice Model for Spontaneous Imbibition in Porous Media: The Role of Effective Tension and Universality Class
Creators: name: Lee, Deok-Sun
name: Sadjadi, Zeinab
name: Rieger, Heiko
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Recently anomalous scaling properties of front broadening during spontaneous imbibition of water in Vycor glass, a nano-porous medium, were reported: the mean height and the width of the propagating front increase with time $t$ both proportional to $t^{1/2}$. Here we propose a simple lattice imbibition model and elucidate quantitatively how the correlation range of the hydrostatic pressure and the disorder strength of the pore radii affect the scaling properties of the imbibition front. We introduce an effective tension of liquid across neighboring pores, which depends on the aspect ratio of each pore, and show that it leads to a dynamical crossover: both the mean height and the roughness grow faster in the presence of tension in the intermediate-time regime but eventually saturate in the long-time regime. The universality class of the long-time behavior is discussed by examining the associated scaling exponents and their relation to directed percolation.
description: 11 pages, 13 figures
title: Medial clavicle fracture associated with arterial bleeding in the pectoralis major muscle
Creators: name: Goossens, Arnaud
Publisher: name: EURORAD
Year: 2023
Subjects: subject: Musculoskeletal system
subject: Arteries / Aorta
subject: Thorax
subject: Trauma
subject: CT
subject: CT-Angiography
subject: Clinical Cases

description: Clinical History: An 83-year-old man who takes Rivaroxaban presented at the emergency department after a bicycle accident. There was a hematoma around the medial clavicle and antalgic dysfunction of the left shoulder. Rapid expansion of the hematoma prompted an urgent Computed Tomography Angiography (CTA) of the thorax.

description: 83 years, male
title: Orizzonti fenomenologici: animale, mondo, io puro, storia
Creators: name: Failla , Mariannina
Publisher: name: Roma Tre-Press
Year: 2020

description: Preferire la parola “orizzonte” significa concentrare l’attenzione dei lettori sulla visione della fenomenologia come metodo al tempo stesso ricorsivo e produttivo. Il numero raccoglie i risultati degli sforzi di una nuova generazione di ricercatori, riuniti da alcuni anni intorno a due esperienze di ricerca collocate in tempi e spazi diversi, ma accomunate da un sano e rigoroso approccio sperimentale, ovvero la traduzione collettiva della prima parte di Husserliana XLII, Grenzprobleme der Phänomenologie. Analysen des Unbewusstseins und der Instinkte. Metafisica. Späte Ethik (Texte aus dem Nachlass 1908-1937) e l’istituzione della Scuola Estiva Internazionale di Ricerca sulla Fenomenologia Genetica tenutasi presso l’Istituto di Filosofia e Sociologia dell’Accademia Polacca delle Scienze di Varsavia nell’ambito della Rete Internazionale di Fenomenologia Genetica e Scienze Umane.

description: B@belonline vol. 6 New Phenomenological Horizons/Nuovi orizzonti fenomenologici
An introduction to Monte Carlo methods
Creators: name: Walter, Jean-Charles
name: Barkema, Gerard
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Monte Carlo simulations are methods for simulating statistical systems. The aim is to generate a representative ensemble of configurations to access thermodynamical quantities without the need to solve the system analytically or to perform an exact enumeration. The main principles of Monte Carlo simulations are ergodicity and detailed balance. The Ising model is a lattice spin system with nearest neighbor interactions that is appropriate to illustrate different examples of Monte Carlo simulations. It displays a second order phase transition between a disordered (high temperature) and ordered (low temperature) phases, leading to different strategies of simulations. The Metropolis algorithm and the Glauber dynamics are efficient at high temperature. Close to the critical temperature, where the spins display long range correlations, cluster algorithms are more efficient. We introduce the rejection free (or continuous time) algorithm and describe in details an interesting alternative representation of the Ising model using graphs instead of spins with the Worm algorithm. We conclude with an important discussion of the dynamical effects such as thermalization and correlation time.
description: 19 pages, 6 figures, submitted to Physica A (Proceedings of the Summer School FPSPXIII, Leuven, 2013)
Probing the primordial Universe from the low-multipole CMB data
Creators: name: Cheng, Cheng
name: Huang, Qing-Guo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Since the temperature fluctuations in cosmic microwave background (CMB) on large-angular scales probe length scales that were super-horizon sized at photon decoupling and hence insensitive to microphysical processes, the low-multipole CMB data are supposed to be a good probe to the physics of the primordial Universe. In this letter we will constrain the cosmological parameters in the base $Λ$CDM model with tensor perturbations by only using low-multipole CMB data, including Background Imaging of Cosmic Extragalactic Polarization (B2), Planck released in 2013 (P13) and Wilkinson Microwaves Anisotropy Probe 9-year data (W9). We find that a red tilted power spectrum of relic gravitational waves is compatible with the data, but a blue tilted power spectrum of scalar perturbations on the large scales is preferred at around $2σ$ confidence level.
description: 5 pages, 2 tables, 2 figures
title: Husserl and The Problem of Animal
Creators: name: Marosan , Bence Peter
Publisher: name: Roma Tre-Press
Year: 2020

description: Lo scopo del saggio è fornire una panoramica dei tentativi di Husserl di spiegare il fenomeno della coscienza animale. Si vuole mostrare come in questo contesto acquisti un'importanza particolare la nozione di vita. Husserl coglie la vita come un processo perpetuo di auto-normalizzazione; essa si normalizza su diversi livelli di complessità. La ricostruzione del livello più basso di soggettività (l’animale) è, al tempo stesso, la descrizione del livello più basso e della forma più rudimentale di auto-normalizzazione della vita. Husserl presenta tre modi per affrontare il problema della mente animale: 1) l’entropatia, 2) la variazione eidetica e 3) la riflessione destrutturante-decostruttiva ("Abbau"). Il primo si riferisce all’entropatia con soggetti anomali (come l’animale), e alla domanda: con quali esseri viventi potremmo essere empatici, in modo fenomenologicamente legittimo? Il secondo modo si rivolge alle strutture eidetiche (essenziali) della coscienza in generale per arrivare a quelle strutture fondamentali senza le quali non potrebbe essere concepita alcuna coscienza (né umana né animale). La terza modalità  riguarda il lavoro decostruttivo del fenomenologo che astrae dallo strato più alto della coscienza, per raggiungere quello più profondo. Una volta rivelato il livello più basso è possibile ricostruire un soggetto che possieda solo le strutture più semplici.

description: B@belonline vol. 6 New Phenomenological Horizons/Nuovi orizzonti fenomenologici
Free and properly discontinuous actions of groups on homotopy $2n$-spheres
Creators: name: Golasinski, Marek
name: Goncalves, Daciberg Lima
name: Jimenez, Rolando
Publisher: name: arXiv
Year: 2014
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: primary: 57S30, secondary: 20F50, 20J06, 57Q91

description: Let $G$ be a group acting freely, properly discontinuously and cellularly on a finite dimensional $C$W-complex $Σ(2n)$ which has the homotopy type of the $2n$- sphere $\mathbb{S}^{2n}$. Then, this action induces an action of the group $G$ on the top cohomology of $Σ(2n)$. For the family of virtually cyclic groups, we classify all groups which act on $Σ(2n)$, the homotopy type of all possible orbit spaces and all actions on the top cohomology as well. \par Under the hypothesis that $\mbox{dim}\,Σ(2n)\leq 2n+1$, we study the groups with the virtual cohomological dimension $\mbox{vcd}\,G
description: 19 pages, submitted
Heavy-Tailed Density Estimation
Creators: name: Tokdar, Surya T
name: Jiang, Sheng
name: Cunningham, Erika L
Publisher: name: arXiv
Year: 2022
Subjects: subject: Methodology (stat.ME)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 62G

description: A novel statistical method is proposed and investigated for estimating a heavy tailed density under mild smoothness assumptions. Statistical analyses of heavy-tailed distributions are susceptible to the problem of sparse information in the tail of the distribution getting washed away by unrelated features of a hefty bulk. The proposed Bayesian method avoids this problem by incorporating smoothness and tail regularization through a carefully specified semiparametric prior distribution, and is able to consistently estimate both the density function and its tail index at near minimax optimal rates of contraction. A joint, likelihood driven estimation of the bulk and the tail is shown to help improve uncertainty assessment in estimating the tail index parameter and offer more accurate and reliable estimates of the high tail quantiles compared to thresholding methods.
description: Combined article with all technical details uploaded here to complement JASA publication
Free energy of cluster formation and a new scaling relation for the nucleation rate
Creators: name: Tanaka, Kyoko K.
name: Diemand, Jürg
name: Angélil, Raymond
name: Tanaka, Hidekazu
Publisher: name: arXiv
Year: 2014
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Recent very large molecular dynamics simulations of homogeneous nucleation with $(1-8) \cdot 10^9$ Lennard-Jones atoms [Diemand et al. J. Chem. Phys. {\bf 139}, 074309 (2013)] allow us to accurately determine the formation free energy of clusters over a wide range of cluster sizes. This is now possible because such large simulations allow for very precise measurements of the cluster size distribution in the steady state nucleation regime. The peaks of the free energy curves give critical cluster sizes, which agree well with independent estimates based on the nucleation theorem. Using these results, we derive an analytical formula and a new scaling relation for nucleation rates: $\ln J' / η$ is scaled by $\ln S / η$, where the supersaturation ratio is $S$, $η$ is the dimensionless surface energy, and $J'$ is a dimensionless nucleation rate. This relation can be derived using the free energy of cluster formation at equilibrium which corresponds to the surface energy required to form the vapor-liquid interface. At low temperatures (below the triple point), we find that the surface energy divided by that of the classical nucleation theory does not depend on temperature, which leads to the scaling relation and implies a constant, positive Tolman length equal to half of the mean inter-particle separation in the liquid phase.
description: 7 figures
A Search for Companions to Brown Dwarfs in the Taurus and Chamaeleon Star Forming Regions
Creators: name: Todorov, K. O.
name: Luhman, K. L.
name: Konopacky, Q. M.
name: McLeod, K. K.
name: Apai, D.
name: Ghez, A. M.
name: Pascucci, I.
name: Robberto, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the results of a search for companions to young brown dwarfs in the Taurus and Chamaeleon I star forming regions (1/2-3 Myr). We have used WFPC2 on board HST to obtain F791W and F850LP images of 47 members of these regions that have spectral types of M6-L0 (0.01-0.1 Msun). An additional late-type member of Taurus, FU Tau (M7.25+M9.25), was also observed with adaptive optics at Keck Observatory. We have applied PSF subtraction to the primaries and have searched the resulting images for objects that have colors and magnitudes that are indicative of young low-mass objects. Through this process, we have identified promising candidate companions to 2MASS J04414489+2301513 (rho=0.105"/15 AU), 2MASS J04221332+1934392 (rho=0.05"/7 AU), and ISO 217 (rho=0.03"/5 AU). We reported the discovery of the first candidate in a previous study, showing that it has a similar proper motion as the primary through a comparison of astrometry measured with WFPC2 and Gemini adaptive optics. We have collected an additional epoch of data with Gemini that further supports that result. By combining our survey with previous high-resolution imaging in Taurus, Chamaeleon, and Upper Sco (10 Myr), we measure binary fractions of 14/93 = 0.15+0.05/-0.03 for M4-M6 (0.1-0.3 Msun) and 4/108 = 0.04+0.03/-0.01 for >M6 (<0.1 Msun) at separations of >10 AU. Given the youth and low density of these three regions, the lower binary fraction at later types is probably primordial rather than due to dynamical interactions among association members. The widest low-mass binaries (>100 AU) also appear to be more common in Taurus and Chamaeleon than in the field, which suggests that the widest low-mass binaries are disrupted by dynamical interactions at >10 Myr, or that field brown dwarfs have been born predominantly in denser clusters where wide systems are disrupted or inhibited from forming.
description: Astrophysical Journal, in press
title: The Affective Intertwining of Body and Space. Towards a Phenomenological Sublime in Contemporary Architecture
Creators: name: Breuer , Irene
Publisher: name: Roma Tre-Press
Year: 2020

description: L’articolo affronta le emozioni corporee intese come elementi essenziali dell’architettura e vuole  reinterpretare in termini fenomenologici il sublime. Assumendo la riflessione kantiana come punto di partenza, il saggio definisce il ‘sublime fenomenologico’ come un’emozione vissuta dal corpo e suscitata dal superamento della concettualità da parte della sensibilità. Nel dibattito attuale la metafora del corpo non è più in grado di garantire l'ordine e il significato simbolico, poichè si rivolge alla sfera delle esperienza spaziali. Questo, in definitiva, è l’esito della critica, con toni diversi in Husserl e in Merleau-Ponty, alla ‘compossibilità’ e alla ‘rappresentazione’. Tale critica ha indirizzato l’esperienza del sublime alle emozioni che un corpo sperimenta nello spazio. Come mostra lo spazio architettonico contemporaneo, il corpo e lo spazio sono intrecciati in modo affettivo; tale co-appartenenza, tuttavia, non è caratterizzata da emozioni positive, ma da piaceri negativi, ossia da conflitti, tensioni e sospensione del significato.

description: B@belonline vol. 6 New Phenomenological Horizons/Nuovi orizzonti fenomenologici
Text-driven object affordance for guiding grasp-type recognition in multimodal robot teaching
Creators: name: Wake, Naoki
name: Saito, Daichi
name: Sasabuchi, Kazuhiro
name: Koike, Hideki
name: Ikeuchi, Katsushi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: This study investigates how text-driven object affordance, which provides prior knowledge about grasp types for each object, affects image-based grasp-type recognition in robot teaching. The researchers created labeled datasets of first-person hand images to examine the impact of object affordance on recognition performance. They evaluated scenarios with real and illusory objects, considering mixed reality teaching conditions where visual object information may be limited. The results demonstrate that object affordance improves image-based recognition by filtering out unlikely grasp types and emphasizing likely ones. The effectiveness of object affordance was more pronounced when there was a stronger bias towards specific grasp types for each object. These findings highlight the significance of object affordance in multimodal robot teaching, regardless of whether real objects are present in the images. Sample code is available on https://github.com/microsoft/arr-grasp-type-recognition.
description: 8 pages, 11 figures. Last updated March 12, 2023 Accepted for publication in Machine Vision and Applications
Kantian fractionalization predicts the conflict propensity of the international system
Creators: name: Cranmer, Skyler J.
name: Menninga, Elizabeth J.
name: Mucha, Peter J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The study of complex social and political phenomena with the perspective and methods of network science has proven fruitful in a variety of areas, including applications in political science and more narrowly the field of international relations. We propose a new line of research in the study of international conflict by showing that the multiplex fractionalization of the international system (which we label Kantian fractionalization) is a powerful predictor of the propensity for violent interstate conflict, a key indicator of the system's stability. In so doing, we also demonstrate the first use of multislice modularity for community detection in a multiplex network application. Even after controlling for established system-level conflict indicators, we find that Kantian fractionalization contributes more to model fit for violent interstate conflict than previously established measures. Moreover, evaluating the influence of each of the constituent networks shows that joint democracy plays little, if any, role in predicting system stability, thus challenging a major empirical finding of the international relations literature. Lastly, a series of Granger causal tests shows that the temporal variability of Kantian fractionalization is consistent with a causal relationship with the prevalence of conflict in the international system. This causal relationship has real-world policy implications as changes in Kantian fractionalization could serve as an early warning sign of international instability.
description: 17 pages + 17 pages designed as supplementary online material
title: Io puro, io reale e storicità immanente del soggetto. A partire dal Bleistiftmanuskript (1912) di Husserl
Creators: name: Pugliese , Alice
Publisher: name: Roma Tre-Press
Year: 2020

description: Il cosiddetto Bleistiftmanuskript (Manoscritto a matita), risalente al periodo tra ottobre e dicembre 1912, è uno dei tre testi originari (Urtexte) da cui è stata elaborata la nuova edizione critica di Idee II di Edmund Husserl. Il manoscritto ci pone di fronte al problema del rapporto tra l'Io puro e l’oscurità della coscienza. L'articolo ricostruisce questo rapporto, interpretandolo come una dinamica tra ‘compimento d’atto’ (Aktvollzug) ed ‘estraneazione’ (Entfremdung) e cercando di dare un resoconto dello stato effettivo del sé nel suo rapporto con le cose materiali e con il corpo. In fase conclusiva, l’articolo intende far emergere anche la nozione fenomenologica di una specifica ‘vulnerabilità storica’ del soggetto.

description: B@belonline vol. 6 New Phenomenological Horizons/Nuovi orizzonti fenomenologici
On the Spin Period Distribution in Be/X-ray Binaries
Creators: name: Cheng, Z. -Q.
name: Shao, Y.
name: Li, X. -D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: There is a remarkable correlation between the spin periods of the accreting neutron stars in Be/X-ray binaries (BeXBs) and their orbital periods . Recently Knigge et al. (2011) showed that the distribution of the spin periods contains two distinct subpopulations peaked at $\sim 10$ s and $\sim 200$ s respectively, and suggested that they may be related to two types of supernovae for the formation of the neutron stars, i.e., core-collapse and electron-capture supernovae. Here we propose that the bimodal spin period distribution is likely to be ascribed to different accretion modes of the neutron stars in BeXBs. When the neutron star tends to capture material from the warped, outer part of the Be star disk and experiences giant outbursts, a radiatively-cooling dominated disk is formed around the neutron star, which spins up the neutron star, and is responsible for the short period subpopulation. In BeXBs that are dominated by normal outbursts or persistent, the accretion flow is advection-dominated or quasi-spherical. The spin-up process is accordingly inefficient, leading to longer periods of the neuron stars. The potential relation between the subpopulations and the supernova mechanisms is also discussed.
description: 18 pages, 5 figures, accepted for publication in ApJ