cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Search for light pseudoscalar sgoldstino in K- decays
Creators: name: Tchikilev, O.
name: Ajinenko, I.
name: Akimenko, S.
name: Britvich, I.
name: Britvich, G.
name: Datsko, K.
name: Filin, A.
name: Inyakin, A.
name: Konstantinov, A.
name: Konstantinov, V.
name: Korolkov, I.
name: Leontiev, V.
name: Novikov, V.
name: Obraztsov, V.
name: Polyakov, V.
name: Romanovsky, V.
name: Shelikhov, V.
name: Smirnov, N.
name: Uvarov, V.
name: Yushchenko, O.
name: Bolotov, V.
name: Laptev, S.
name: Pastsjak, A.
name: Polyarush, A.
name: Sirodeev, R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search for the light pseudoscalar sgoldstino production in the three body K- decay K-->pipi0P has been performed with the ISTRA+ detector exposed to the 25 GeV negative secondary beam of the U70 proton synchrotron. No signal is seen. An upper limit for the branching ratio Br(K->pipi0P), at 90% confidence level, is found to be around 9*10**-6 in the effective mass m(P) range from 0 till 200 MeV, excluding the region near m(pi0) where it degrades to 3.5*10**-5.
description: 10 pages, LATEX, 8 EPS figures, revised version, to be published in Phys.Lett.B
John Clifford Barton: Obituary and Bibliography
Creators: name: McMillan, John
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: John Barton was one of the experimental founders of particle astrophysics, working in deep underground locations all over the world. This note combines the obituary published in The Independent with a complete list of his publications.
description: 12 pages, Latex
Figure S1 from Antioxidant supplementation slows telomere shortening in free-living white stork chicks
Creators: name: Pineda-Pampliega, Javier
name: Herrera-Dueñas, Amparo
name: Mulder, Ellis
name: Aguirre, José I.
name: Höfle, Ursula
name: Verhulst, Simon
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: Environmental Science

description: Timeline experimental protocol. The green squares indicate the administration of the treatment, while the red circles indicate that a blood sample was taken. Chicks were on average 20 days old at day 1 and fledge when around 60 days old.
title: Overview of geotechnical effects of the January 9, 2018, debris-flow and flash-flood disaster in Montecito, California
Creators: name: Keaton, Jeffrey
name: Ortiz, Richard M.
name: Turner, Benjamin
name: Alessio, Paul
name: Gartner, Joseph
name: Duffy, John
name: Parker, Grace
name: Smilovsky, Danielle
name: Watts, Taylor
Publisher: name: Mountain Scholar
Year: 2019
Subjects: Montecito
debris-flow
flash-flood
GEER
geotechnical effects
post-fire

description: A strong winter storm moved across slopes above Montecito recently burned by the December 2017-January 2018 Thomas Fire, producing disastrous debris flows and flash flooding that killed 23 people, injured many others, and damaged or destroyed residential buildings and community infrastructure. Prior to the event, the National Weather Service issued a flash flood watch, forecasting periods of intense precipitation that had the potential to produce debris flows below recently burned slopes. The Geotechnical Extreme Event Reconnaissance (GEER) Association formed a team to document some of the effects of the Montecito disaster within San Ysidro creek and on bridges along State Route 192, which included geologists, engineers, and a graduate student with a background in public health. The Santa Ynez Mountains are comprised of steeply dipping Tertiary sedimentary rocks that include thick-bedded durable sandstone, with interbeds of shale, claystone, and silty sandstone, which weather to bouldery and cobbly clayey and silty sand sediments. The drainage basins have large upper subbasins separated from the coastal plain where Montecito is located by narrow steep-sided canyons. Alluvial fan deposits on the coastal plain contain boulders of local historic debris flow deposits. The debris flows overwhelmed debris-catch basins at the mouths of canyons and the shallow channels where homes and community infrastructure had been built. The debris flows damaged or destroyed the bridges observed for this study. Stream channels were blocked by accumulated boulder and woody debris in a number of locations during the debris flow event, which diverted flows away from the channels and onto adjacent land with residential and commercial developments. Above-grade stream crossings of some utility pipelines, including water supply, were on the upstream sides of the larger bridges, in part because of difficult and expensive excavation into bouldery alluvial-fan deposits. The flows also ruptured a natural gas pipeline and the leaking gas ignited, causing fire damage during the flood event. Damage in Montecito occurred to property adjacent to the five major stream channels, but life in all parts of the community, and to the region, was severely disrupted, highlighting the need for consideration of potential impacts from rare and extreme geologic processes in land-use decisions and infrastructure design.
Chaos in an Exact Relativistic 3-body Self-Gravitating System
Creators: name: Burnell, F. J.
name: Malecki, J. J.
name: Mann, R. B.
name: Ohta, T.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the problem of three body motion for a relativistic one-dimensional self-gravitating system. After describing the canonical decomposition of the action, we find an exact expression for the 3-body Hamiltonian, implicitly determined in terms of the four coordinate and momentum degrees of freedom in the system. Non-relativistically these degrees of freedom can be rewritten in terms of a single particle moving in a two-dimensional hexagonal well. We find the exact relativistic generalization of this potential, along with its post-Newtonian approximation. We then specialize to the equal mass case and numerically solve the equations of motion that follow from the Hamiltonian. Working in hexagonal-well coordinates, we obtaining orbits in both the hexagonal and 3-body representations of the system, and plot the Poincare sections as a function of the relativistic energy parameter $η$. We find two broad categories of periodic and quasi-periodic motions that we refer to as the annulus and pretzel patterns, as well as a set of chaotic motions that appear in the region of phase-space between these two types. Despite the high degree of non-linearity in the relativistic system, we find that the the global structure of its phase space remains qualitatively the same as its non-relativisitic counterpart for all values of $η$ that we could study. However the relativistic system has a weaker symmetry and so its Poincare section develops an asymmetric distortion that increases with increasing $η$. For the post-Newtonian system we find that it experiences a KAM breakdown for $η\simeq 0.26$: above which the near integrable regions degenerate into chaos.
description: latex, 65 pages, 36 figures, high-resolution figures available upon request
Mass motion in a prominence bubble revealing a kinked flux rope configuration
Creators: name: Awasthi, Arun Kumar
name: Liu, Rui
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Prominence bubbles are cavities rising into quiescent prominences from below. The bubble-prominence interface is often the active location for the formation of plumes, which flow turbulently into quiescent prominences. Not only the origin of prominence bubbles is poorly understood, but most of their physical characteristics are still largely unknown. Here, we investigate the dynamical properties of a bubble, which is observed since its early emergence beneath the spine of a quiescent prominence on 20 October 2017 in the H$α$ line-center and in $\pm$0.4 angstrom line-wing wavelengths by the 1-m New Vacuum Solar Telescope. We report the prominence bubble to be exhibiting a disparate morphology in the H$α$ line-center compared to its line-wings' images, indicating a complex pattern of mass motion along the line-of-sight. Combining Doppler maps with flow maps in the plane of sky derived from a Nonlinear Affine Velocity Estimator, we obtained a comprehensive picture of mass motions revealing a counter-clockwise rotation inside the bubble; with blue-shifted material flowing upward and red-shifted material flowing downward. This sequence of mass motions is interpreted to be either outlining a kinked flux rope configuration of the prominence bubble or providing observational evidence of the internal kink instability in the prominence plasma.
description: To appear in Journal: Frontiers in Physics - Stellar and Solar Physics; Research Topic: Magnetic Flux Ropes: From the Sun to the Earth and Beyond
Computing the Small-Scale Galaxy Power Spectrum and Bispectrum in Configuration-Space
Creators: name: Philcox, Oliver H. E.
name: Eisenstein, Daniel J.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present a new class of estimators for computing small-scale power spectra and bispectra in configuration-space via weighted pair- and triple-counts, with no explicit use of Fourier transforms. Particle counts are truncated at $R_0\sim 100h^{-1}\,\mathrm{Mpc}$ via a continuous window function, which has negligible effect on the measured power spectrum multipoles at small scales. This gives a power spectrum algorithm with complexity $\mathcal{O}(NnR_0^3)$ (or $\mathcal{O}(Nn^2R_0^6)$ for the bispectrum), measuring $N$ galaxies with number density $n$. Our estimators are corrected for the survey geometry and have neither self-count contributions nor discretization artifacts, making them ideal for high-$k$ analysis. Unlike conventional Fourier transform based approaches, our algorithm becomes more efficient on small scales (since a smaller $R_0$ may be used), thus we may efficiently estimate spectra across $k$-space by coupling this method with standard techniques. We demonstrate the utility of the publicly available power spectrum algorithm by applying it to BOSS DR12 simulations to compute the high-$k$ power spectrum and its covariance. In addition, we derive a theoretical rescaled-Gaussian covariance matrix, which incorporates the survey geometry and is found to be in good agreement with that from mocks. Computing configuration- and Fourier-space statistics in the same manner allows us to consider joint analyses, which can place stronger bounds on cosmological parameters; to this end we also discuss the cross-covariance between the two-point correlation function and the small-scale power spectrum.
description: 29 pages, 14 figures, accepted by MNRAS. Code is available at https://github.com/oliverphilcox/HIPSTER with documentation at https://HIPSTER.readthedocs.io
title: Ολοκληρωμένο σύστημα αλληλεπίδρασης ανθρώπου-υπολογιστή με αναγνώριση κίνησης σώματος σε πραγματικό χρόνο
title: Integrated human-computer interaction system with real-time body movement recognition
titleType: AlternativeTitle
Creators: name: Ρίφιος, Αντώνιος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2024
Subjects: subject: Σύστημα αλληλεπίδρασης ανθρώπου-υπολογιστή
subject: Αναγνώριση κίνησης σώματος σε πραγματικό χρόνο
subject: MediaPipe
subject: NextJs

description: Η παρούσα διπλωματική εργασία ασχολείται με την ανάπτυξη μίας διαδραστικής εφαρμογής που επιτρέπει την αλληλεπίδραση του χρήστη με τέσσερα παιχνίδια μέσω αναγνώρισης κινήσεων σώματος και προσώπου σε πραγματικό χρόνο. Η εφαρμογή παρέχει μια εξατομικευμένη εμπειρία, συλλέγοντας δημογραφικά στοιχεία για την προσαρμογή προσφορών που εμφανίζονται στο τέλος της διαδικασίας. Το έργο εστιάζει στη δημιουργία ενός ευέλικτου και επεκτάσιμου συστήματος, αντιμετωπίζοντας προκλήσεις όπως η βελτιστοποίηση των επιδόσεων, η ιδιωτικότητα των χρηστών και η αποτελεσματική διαχείριση πόρων.
Efficient Quantum Tomography of Two-Mode Wigner Functions
Creators: name: Botelho, Ludmila A. S.
name: Vianna, Reinaldo O.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce an efficient method to reconstruct the Wigner function of many-mode continuous variable systems. It is based on convex optimization with semidefinite programs, and also includes a version of the maximum entropy principle, in order to yield unbiased states. A key ingredient of the proposed approach is the representation of the state in a truncated Fock basis. As a bonus, the discrete finite representation allows to easily quantify the entanglement.
description: 13 pages, 4 figures
Numerical study of gluon propagators in Maximally Abelian gauge
Creators: name: Bornyakov, V. G.
name: Chernodub, M. N.
name: Gubarev, F. V.
name: Morozov, S. M.
name: Polikarpov, M. I.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Propagators of diagonal and off-diagonal gluons are studied numerically in the Maximally Abelian gauge of the SU(2) lattice gauge theory. We have found the strong enhancement of the diagonal gluon in the infrared region. The enhancement factor is about 50 at the smallest available momentum, 325 MeV. We discuss also various analytical fits to the propagators.
description: 3 pages, 3 figures, uses espcrc2.sty; Lattice2003(topology)
Table S1 from Antioxidant supplementation slows telomere shortening in free-living white stork chicks
Creators: name: Pineda-Pampliega, Javier
name: Herrera-Dueñas, Amparo
name: Mulder, Ellis
name: Aguirre, José I.
name: Höfle, Ursula
name: Verhulst, Simon
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: Environmental Science

description: Telomere length (average of each sample) in relation to the covariates Age (days), mass (g) and Hatch Order (1,2,3) and the factors Sex (Male) (male and female) and Treatment (Control or Vitamins; note that day 1 measurements are coded as control for all nestlings). Factors in the final model have been highlighted in bold. Significant factors (p < 0.05) have an *. Random terms are included in all models, and their values are in italic. Non-significant interactions were excluded from the models when estimating coefficients of main effects.
title: Η ηλεκτροκίνηση στην Ελλάδα. Μελέτη διαχείρισης στόλου ηλεκτρικών οχημάτων
title: Electromobility in Greece. Study of fleet management of electric vehicles
titleType: AlternativeTitle
Creators: name: Μαυρογιάννης, Σταύρος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2024
Subjects: subject: Ηλεκτροκίνηση
subject: Κλιματική αλλαγή
subject: Διαχείριση στόλου οχημάτων
subject: Ηλεκτρικό όχημα

description: Η ηλεκτροκίνηση θεωρείται τα τελευταία χρόνια ως η απάντηση στα σύγχρονα περιβαλλοντικά προβλήματα, όπως η κλιματική αλλαγή, το φαινόμενο του θερμοκηπίου και η εξάντληση των φυσικών πόρων. Προωθείται ως λύση για τη μείωση των εκπομπών ρύπων και την προστασία του περιβάλλοντος, ενώ η Ευρωπαϊκή Ένωση και η Ελλάδα έχουν ήδη θεσπίσει κανονιστικά πλαίσια για την προώθηση των ηλεκτρικών οχημάτων με στόχο την εκμηδένιση των αερίων του θερμοκηπίου. Η εργασία εξετάζει τη σταδιακή εξάπλωση της ηλεκτροκίνησης και τη σημασία της για τη βιώσιμη ανάπτυξη, τονίζοντας ότι η μετάβαση από οχήματα εσωτερικής καύσης σε ηλεκτρικά οχήματα είναι αναπόφευκτη και επιταχύνεται πιο γρήγορα από ό,τι αναμενόταν. Ωστόσο, εγείρονται ερωτήματα σχετικά με την ετοιμότητα του κράτους, των υποδομών και των επιχειρήσεων να υποστηρίξουν αυτή τη νέα πραγματικότητα. Παρουσιάζεται η μελέτη περίπτωση μίας μεγάλης εταιρείας leasing αυτοκινήτων στην Ελλάδα, όπου μέσα από τη διενέργεια ατομικών συνεντεύξεων, γίνεται προσπάθεια κατανόησης του τρόπου με τον οποίο η εταιρεία αυτή αντιλαμβάνεται το φαινόμενο της ηλεκτροκίνησης, πως την επηρεάζει αλλά και τι στρατηγικές έχει εφαρμόσει προκειμένου να προσαρμοστεί στο φαινόμενο αυτό. Από την ανάλυση των δεδομένων, κρίνεται ότι η ηλεκτροκίνηση αποτελεί αυτή τη στιγμή το μόνο τρόπο προστασίας του περιβάλλοντος στον τομέα των μετακινήσεων, παρόλα αυτά είναι κάτι το οποίο γίνεται πολύ σταδιακά, καθώς πρέπει παράλληλα να διευθετηθούν κάποια ζητήματα που αποτελούν τροχοπέδη στην άμεση και μαζική υιοθέτησή της. Όσον αφορά την επιρροή της ηλεκτροκίνησης στην υπό εξέταση εταιρεία, καταλήγουμε στο συμπέρασμα ότι έχει φέρει κάποια καινούρια δεδομένα, κάποια από τα οποία μπορεί να είναι και απρόβλεπτα. Παρόλα αυτά η ηλεκτροκίνηση μόνο θετικά αποτελέσματα μπορεί να φέρει, εφόσον παράλληλα η εταιρεία φροντίζει να χαράζει και να πραγματοποιεί εκείνες τις στρατηγικές, οι οποίες θα τη βοηθήσουν να προσαρμοστεί στις νέες καταστάσεις και παράλληλα να μεγιστοποιήσει το όφελός της.
Multiple solutions for Grushin operator without odd nonlinearity
Creators: name: Hamdani, Mohamed Karim
Publisher: name: arXiv
Year: 2019
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: Primary: 35J55, 35J65, Secondary: 35B33, 35B65

description: We deal with existence and multiplicity results for the following nonhomogeneous and homogeneous equations, respectively: \begin{eqnarray*} (P_g)\quad - Δ_λ u + V(x) u = f(x,u)+g(x),\;\mbox{ in } \R^N,\; \end{eqnarray*} and \begin{eqnarray*} (P_0)\quad - Δ_λ u + V(x) u = K(x)f(x,u),\;\mbox{ in } \R^N,\; \end{eqnarray*} where $Δ_λ$ is the strongly degenerate operator, $V(x)$ is allowed to be sign-changing, $K\in C(\R^N,\R)$, $g:\R^N\to\R$ is a perturbation and the nonlinearity $f(x,u)$ is a continuous function does not satisfy the Ambrosetti-Rabinowitz superquadratic condition ($(AR)$ for short). First, via the mountain pass theorem and the Ekeland's variational principle, existence of two different solutions for $(P_g)$ are obtained when $f$ satisfies superlinear growth condition. Moreover, we prove the existence of infinitely many solutions for $(P_0)$ if $f$ is odd in $u$ thanks an extension of Clark's theorem near the origin. So, our main results considerably improve results appearing in the literature.
description: 15 pages
The Optical Counterpart to SAX J1808.4-3658 in Quiescence: Evidence of an Active Radio Pulsar?
Creators: name: Burderi, L.
name: Di Salvo, T.
name: D'Antona, F.
name: Robba, N. R.
name: Testa, V.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The optical counterpart of the binary millisecond X-ray pulsar SAX J1808.4-3658 during quiescence was detected at V = 21.5 mag by Homer et al. (2001). This star shows a 6% semi-amplitude sinusoidal modulation of its flux at the orbital period of the system. It was proposed that the modulation arises from X-ray irradiation of the intrinsically faint companion by a remnant accretion disk, and that the bulk of the optical emission arises from viscous dissipation in the disk. The serious difficulty in this scenario lies in the estimate of the irradiating luminosity required to match the observational data, that is a factor 10-50 higher than the quiescent X-ray luminosity of this source. To overcome this problem, we propose an alternative scenario, in which the irradiation is due to the release of rotational energy by the fast spinning neutron star, switched on, as magneto-dipole rotator (radio pulsar), during quiescence. Our computations indicate that the optical magnitudes are fully consistent with this hypothesis. In this case the observed optical luminosity may be the first evidence that a radio pulsar is active in this system in quiescence, a key phase for understanding the evolution of this class of objects.
description: 4 pages, A&A Letters, in press
Spin-lattice coupling in a ferrimagnetic spinel: The exotic $H$-$T$ phase diagram of MnCr$_2$S$_4$ up to 110 T
Creators: name: Miyata, A.
name: Suwa, H.
name: Nomura, T.
name: Prodan, L.
name: Felea, V.
name: Skourski, Y.
name: Deisenhofer, J.
name: von Nidda, H. -A. Krug
name: Portugall, O.
name: Zherlitsyn, S.
name: Tsurkan, V.
name: Wosnitza, J.
name: Loidl, A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In antiferromagnets, the interplay of spin frustration and spin-lattice coupling has been extensively studied as the source of complex spin patterns and exotic magnetism. Here, we demonstrate that, although neglected in the past, the spin-lattice coupling is essential to ferrimagnetic spinels as well. We performed ultrahigh-field magnetization measurements up to 110 T on a Yafet-Kittel ferrimagnetic spinel, MnCr$_2$S$_4$, which was complemented by measurements of magnetostriction and sound velocities up to 60 T. Classical Monte Carlo calculations were performed to identify the complex high-field spin structures. Our minimal model incorporating spin-lattice coupling accounts for the experimental results and corroborates the complete phase diagram, including two new high-field phase transitions at 75 and 85 T. Magnetoelastic coupling induces striking effects: An extremely robust magnetization plateau is embedded between two unconventional spin-asymmetric phases. Ferrimagnetic spinels provide a new platform to study asymmetric and multiferroic phases stabilized by spin-lattice coupling.
description: 9 pages, 7 figures
Figure S1 and TableS1 from A multivariate analysis of women's mating strategies and sexual selection on men's facial morphology
Creators: name: Clarkson, Tessa R.
name: Sidari, Morgan J.
name: Sains, Rosanna
name: Alexander, Meredith
name: Harrison, Melissa
name: Mefodeva, Valeriya
name: Pearson, Samuel
name: Lee, Anthony J.
name: Dixson, Barnaby J. W.
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: 179999 Psychology and Cognitive Sciences not elsewhere classified
subject: FOS: Psychology

description: Reproductive ambition data including current relationship status.
Supplementary Table Titles from ALOX5, LPA, MMP9 and TPO gene polymorphisms increase atherothrombosis susceptibility in middle-aged Mexicans
Creators: name: Camacho-Mejorado, Rafael
name: Gómez, Rocío
name: Torres-Sánchez, Luisa E.
name: Hernández-Tobías, Esther Alhelí
name: Noris, Gino
name: Santana, Carla
name: Magaña, Jonathan J.
name: Orozco, Lorena
name: Peña-Díaz, Aurora De La
name: Arenas-Sordo, María De La Luz
name: Meraz-Ríos, Marco Antonio
name: Majluf-Cruz, Abraham
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Atherothrombosis is the cornerstone of cardiovascular diseases and the primary cause of death worldwide. Genetic contribution to disturbances in lipid metabolism, coagulation, inflammation and oxidative stress increase the susceptibility to its development and progression. Given its multifactorial nature, the multiloci studies have been proposed as potential predictors of susceptibility. A cross-sectional study was conducted to explore the contribution of nine genes involved in oxidative stress, inflammatory and thrombotic processes in 204 subjects with atherothrombosis matched by age and gender with a healthy group (n = 204). To evaluate the possibility of spurious associations owing to the Mexican population genetic heterogeneity as well as its ancestral origins, 300 unrelated mestizo individuals and 329 Native Americans were also included. ALOX5, LPA, MMP9 and TPO gene polymorphisms, as well as their multiallelic combinations, were twice to four times more frequent in those individuals with clinical manifestations of atherothrombosis than in the healthy group. Once adjusting for population stratification was done, these differences remained. Our results add further evidence on the contribution of ALOX5, LPA, MMP9 and TPO polymorphisms to atherothrombosis development in the middle-aged group, emphasizing the multiethnic studies in search of gene risk polymorphisms.
Controllability of Linear Dynamical Systems Under Input Sparsity Constraints
Creators: name: Joseph, Geethu
name: Murthy, Chandra R.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: In this work, we consider the controllability of a discrete-time linear dynamical system with sparse control inputs. Sparsity constraints on the input arises naturally in networked systems, where activating each input variable adds to the cost of control. We derive algebraic necessary and sufficient conditions for ensuring controllability of a system with an arbitrary transfer matrix. The derived conditions can be verified in polynomial time complexity, unlike the more traditional Kalman-type rank tests. Further, we characterize the minimum number of input vectors required to satisfy the derived conditions for controllability. Finally, we present a generalized Kalman decomposition-like procedure that separates the state-space into subspaces corresponding to sparse-controllable and sparse-uncontrollable parts. These results form a theoretical basis for designing networked linear control systems with sparse inputs.
description: 11 pages
El trabajo y la intimidad, procesos vitales en ambientes tecnológicos
Creators: name: Gómez Marín, Gabriel Ignacio
Publisher: name: Universidad Externado de Colombia
Year: 2023
Subjects: subject: Bioética - Aspectos sociales
subject: Dignidad - Aspectos morales y éticos
subject: Libertad - Aspectos morales y éticos
subject: Derecho al trabajo - Aspectos sociales
subject: Ética - Aspectos morales
subject: Nuevo sujeto legal laboral
subject: Trabajo
subject: Bioética
subject: Ecología
subject: Salud
subject: Derecho laboral
subject: Derechos fundamentales
subject: Intimidad
subject: Entorno laboral
subject: Tecnociencia
subject: Dignidad humana y libertad
subject: Biotrabajo
subject: Biolaboralidad

description: Cuando el proceso vital del trabajador es afectado en su intimidad por la tecnociencia, hay cuatro elementos (proceso vital + trabajador + intimidad + afectación por la tecnociencia); en esta ecuación dinámica, la vida prima ante el trabajo, por el derecho a la dignidad humana y planetaria: surgiendo el nuevo sujeto* legal* laboral* y los conceptos de biotrabajo y biolaboralidad (vida + trabajo).
description: When the worker´s vital process is affected in its intimacy by technoscience, there are four elements (vital process + worker + intimacy + technoscience afectation); In this dinamic equation, life takes precedence over work, because of the right to human and planetary dignity: Surging a new legal and labour subject and the biowork and biolabour concepts (life + work).
Type IIB Colliding Plane Waves
Creators: name: Gutperle, M.
name: Pioline, B.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Four-dimensional colliding plane wave (CPW) solutions have played an important role in understanding the classical non-linearities of Einstein's equations. In this note, we investigate CPW solutions in $2n+2$--dimensional Einstein gravity with a $n+1$-form flux. By using an isomorphism with the four-dimensional problem, we construct exact solutions analogous to the Szekeres vacuum solution in four dimensions. The higher-dimensional versions of the Khan-Penrose and Bell-Szekeres CPW solutions are studied perturbatively in the vicinity of the light-cone. We find that under small perturbations, a curvature singularity is generically produced, leading to both space-like and time-like singularities. For $n=4$, our results pertain to the collision of two ten-dimensional type IIB Blau - Figueroa o'Farrill - Hull - Papadopoulos plane waves.
description: 20+10 pages, 2 figures, uses JHEP3.cls; v2: refs [3,10,22] corrected, remark added below (3.9) on inexistence of conformally flat CPW in our ansatz, final version to appear in JHEP
RTsim: A register transfer simulator
Creators: name: Lam, Jimmy
Publisher: name: California Institute of Technology
Year: 1983
Subjects: Computer Science

description: The growing complexity and size of VLSI processors are demanding extremely accurate, simulation facilities for microcode debugging, logic verification, and system integration. However, reliance on mask iterations to remedy problems on a chip not only raises costs, but also extends the design cycle. Simulation justifies itself in both the turn around time and the design cost. Gate level simulation is one method for reducing errors in a chip design. However, gate level simulation of large designs are extremely expensive, and sometimes impossible when the gate level representation is not known. This thesis attempts to solve this problem by providing a functional modeling language, a reconfigurable assembler, and a functional simulation program. Mixed-level simulation capability is also provided by allowing the replacement of a functional unit by a transistor network which is being simulated by a switch-level logic simulator.
Exoplanet detection capability of the COROT space mission
Creators: name: Borde, P.
name: Rouan, D.
name: Leger, A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: COROT will be the first high precision photometric satellite to be launched with the aim of detecting exoplanets by the transit method. In this paper, we present the simulations we have carried out in order to assess the detection capability of COROT. Using the model of stellar population synthesis of the Galaxy developed at Besancon Observatory (Robin & Creze 1986) and a simple cross-correlation technique (Borde et al. 2001), we find that COROT has the capacity to detect numerous exoplanets, not only Jupiter and Uranus-class ones, but also hot terrestrial planets, if they exist. We show that small exoplanets should be mainly gathered around 14-15th magnitude K2-M2 dwarfs and giant exoplanets around 15-16th magnitude F7-G2 dwarfs. We study the effect of crowding and the impact of a high stellar variability noise that both reduce the detection capability of the instrument.
description: 8 pages, 7 figures, accepted by A&A
On the Impossibility of Unconditionally Secure Quantum Bit Commitment
Creators: name: Haizmann, Frieder
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2021
Subjects: quantum commitments
quantum cryptography

description: Dominic Mayers veröffentlichte 1997 ein Unmöglichkeitstheorem, in welchem er zeigte, dass es keine quantenkryptographische bit-commitment Verfahren gibt, die uneingeschränkt sicher sind. Der begleitende Beweis lässt allerdings einige Details aus und ist somit schwer nachzuvollziehen. In dieser Bachelorarbeit werden also zunächst die Grundlagen vorgestellt, die notwendig sind um dem Beweis zu folgen. Dann wird der Beweis schrittweise in einer Form, der besser zu folgen ist, dargelegt und fehlende Details ergänzt. Des Weiteren wird der Beweis mit Beispielen illustriert, und der Beweis ins Verhältnis zu späteren Ergebnissen gesetzt. Darüber hinaus werden gängige Quanten-Bit-Commitment-Verfahren, die nicht unter das Unmöglichkeitstheorem fallen, erarbeitet. Diese Verfahren und Herangehensweisen, solche Verfahren zu konstruieren, werden miteinander verglichen, klassifiziert und begutachtet.
Topotaxis of active Brownian particles
Creators: name: Schakenraad, Koen
name: Ravazzano, Linda
name: Sarkar, Niladri
name: Wondergem, Joeri A. J.
name: Merks, Roeland M. H.
name: Giomi, Luca
Publisher: name: arXiv
Year: 2019
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Recent experimental studies have demonstrated that cellular motion can be directed by topographical gradients, such as those resulting from spatial variations in the features of a micropatterned substrate. This phenomenon, known as topotaxis, is especially prominent among cells persistently crawling within a spatially varying distribution of cell-sized obstacles. In this article we introduce a toy model of topotaxis based on active Brownian particles constrained to move in a lattice of obstacles, with space-dependent lattice spacing. Using numerical simulations and analytical arguments, we demonstrate that topographical gradients introduce a spatial modulation of the particles' persistence, leading to directed motion toward regions of higher persistence. Our results demonstrate that persistent motion alone is sufficient to drive topotaxis and could serve as a starting point for more detailed studies on self-propelled particles and cells.
description: 10 pages, 6 figures
A young and obscured AGN embedded in the giant radio galaxy Mrk 1498
Creators: name: Hernández-García, L.
name: Panessa, F.
name: Bassani, L.
name: Bruni, G.
name: Ursini, F.
name: Chavushyan, V.
name: González-Martín, O.
name: Cazzoli, S.
name: Jiménez-Andrade, E. F.
name: Arévalo, P.
name: Díaz, Y.
name: Bazzano, A.
name: Ubertini, P.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Mrk 1498 is part of a sample of galaxies with extended emission line regions (extended outwards up to a distance of $\sim$7 kpc) suggested to be photo-ionized by an AGN that has faded away or that is still active but heavily absorbed. Interestingly, the nucleus of Mrk 1498 is at the center of two giant radio lobes with a projected linear size of 1.1 Mpc. Our multi-wavelength analysis reveals a complex nuclear structure, with a young radio source (Giga-hertz Peaked Spectrum) surrounded by a strong X-ray nuclear absorption, a mid-infrared spectrum that is dominated by the torus emission, plus a circum-nuclear extended emission in the [OIII] image (with radius of $\sim$ 1 kpc), most likely related to the ionization of the AGN, aligned with the small and large scale radio jet and extended also at X-rays. In addition a large-scale extended emission (up to $\sim$ 10 kpc) is only visible in [OIII]. These data show conclusive evidence of a heavily absorbed nucleus and has recently restarted its nuclear activity. To explain its complexity, we propose that Mrk 1498 is the result of a merging event or secular processes, such as a minor interaction, that has triggered the nuclear activity and produced tidal streams. The large-scale extended emission that gives place to the actual morphology could either be explained by star formation or outflowing material from the AGN.
description: 15 pages, 11 figures, accepted for publication in MNRAS
Future asymptotic expansions of Bianchi VIII vacuum metrics
Creators: name: Ringstrom, Hans
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Bianchi VIII vacuum solutions to Einstein's equations are causally geodesically complete to the future, given an appropriate time orientation, and the objective of this article is to analyze the asymptotic behaviour of solutions in this time direction. For the Bianchi class A spacetimes, there is a formulation of the field equations that was presented in an article by Wainwright and Hsu, and in a previous article we analyzed the asymptotic behaviour of solutions in these variables. One objective of this paper is to give an asymptotic expansion for the metric. Furthermore, we relate this expansion to the topology of the compactified spatial hypersurfaces of homogeneity. The compactified spatial hypersurfaces have the topology of Seifert fibred spaces and we prove that in the case of NUT Bianchi VIII spacetimes, the length of a circle fibre converges to a positive constant but that in the case of general Bianchi VIII solutions, the length tends to infinity at a rate we determine.
description: 50 pages, no figures. Erronous definition of Seifert fibred spaces corrected
The three dimensional structure of the giant stellar stream in Andromeda
Creators: name: McConnachie, A. W.
name: Irwin, M. J.
name: Ibata, R. A.
name: Ferguson, A. M. N.
name: Lewis, G. F.
name: Tanvir, N.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The wide-field CCD camera at the CFH telescope was used to survey the giant stellar stream in the Andromeda galaxy, resolving stars down the red giant branch in M31 to I ~ 25, a magnitude deeper than our previous INT survey of this galaxy and extending 1 degree further out. The stream is seen to extend out to the south-east of M31 as far as we have surveyed (some 4.5 degrees, corresponding to a projected distance ~60 kpc). It is a linear structure in projection, and the eastern edge of the stream presents a sharp boundary in star counts suggesting that it remains a coherent structure. By analysing the luminosity function of the metal rich component of the stream we find that, at the furthest extent of our survey, the stream is 100 kpc further away along the line of sight than M31. It can then be traced to a point on the north-western side of the galaxy where it is some 30 kpc in front of M31, at which point the stream turns away from our survey area.
description: 6 pages, 7 figures. Accepted for publication in MNRAS. A version with higher resolution figures and a larger figure 1 can be found at http://www.ast.cam.ac.uk/~alan/publications
RMarkdown from A multivariate analysis of women's mating strategies and sexual selection on men's facial morphology
Creators: name: Clarkson, Tessa R.
name: Sidari, Morgan J.
name: Sains, Rosanna
name: Alexander, Meredith
name: Harrison, Melissa
name: Mefodeva, Valeriya
name: Pearson, Samuel
name: Lee, Anthony J.
name: Dixson, Barnaby J. W.
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: 179999 Psychology and Cognitive Sciences not elsewhere classified
subject: FOS: Psychology

description: Output from analyses in R.
Equality of the Inertial and the Gravitational Masses for a Quantum Particle
Creators: name: Wawrzycki, Jaroslaw
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the interaction of the gravitational field with a quantum particle. We derive the wave equation in the curved galilean spacetime from the very broad Quantum mechanical assumptions and from covariance under the Milne group. The inertial and gravitational masses are equal in that equation. So, we give the proof of the equality for the non-relativistic quantum particle, without applying the equivalence principle to the Schrödinger equation and witout imposing any relation to the classical equations of motion. This result constitutes a substantial strengthening of the previous result obtained by Herdegen and the author.
description: Revised version, supported by the Polish State Committee Research (KBN) grant no. 5 P03B 093 20, 11 pages
Peculiar spectral and power spectral behaviour of the LMXB GX 13+1
Creators: name: Schnerr, R. S.
name: Reerink, T.
name: van der Klis, M.
name: Homan, J.
name: Méndez, M.
name: Fender, R. P.
name: Kuulkers, E.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present results of an analysis of all 480 ks of Rossi X-ray Timing Explorer Proportional Counter Array data obtained from 17 May 1998 to 11 October 1998 on the luminous low mass X-ray binary GX 13+1. We analysed the spectral properties in colour-colour diagrams (CDs) and hardness-intensity diagrams (HIDs) and fitted the power spectra with a multi-Lorentzian model. GX 13+1 traces out a curved track in the CDs on a time scale of hours, which is very reminiscent of a standard atoll track containing an island, and lower and upper banana branch. However, both count rate and power spectral properties vary along this track in a very unusual way, not seen in any other atoll or Z source. The count rate, which varied by a factor of ~1.6, along a given track first decreases and then increases, causing the motion through the HIDs to be in the opposite sense to that in the CD, contrary to all other Z and atoll sources. Along a CD track, the very low frequency noise uniquely decreases in amplitude from ~5 to ~2% (rms). The high frequency noise amplitude decreases from ~4% to less than 1% and its characteristic frequency decreases from ~10 to \~5 Hz. The 57-69 Hz quasi-periodic oscillation (QPO) found earlier is also detected, and no kHz QPOs are found. In addition the entire track shows secular motion on a time scale of about a week. The average count rate as well as the amplitude of the very low frequency noise correlate with this secular motion. We discuss a possible explanation for the peculiar properties of GX 13+1 in terms of an unusual orientation or strength of a relativistic jet.
description: 15 pages, 13 figures. Accepted for publication in A&A
La legitimación de la protección penal del medio ambiente : un análisis comparativo de los fundamentos en el Civil Law y el Common Law
Creators: name: Díaz Vargas, María Alejandra
Publisher: name: Universidad Externado de Colombia
Year: 2024
Subjects: subject: Derecho ambiental - Estudios de caso
subject: Derecho penal - Colombia
subject: Actos jurídicos - Aspectos Jurídicos
subject: Medioambiente
subject: Derecho penal ambiental
subject: Derecho penal continental
subject: Derecho penal anglosajón
subject: Legitimación del derecho penal

description: La creciente tendencia a criminalizar conductas que atentan contra el medio ambiente a nivel mundial, influenciada en gran medida por las exigencias del derecho internacional, ha llevado a cuestionar la relevancia del derecho penal para su protección. Planteando la pregunta general sobre la legitimidad de la intervención penal para proteger determinados intereses, y entendiendo que el derecho penal representa la expresión más severa del poder punitivo estatal, esta tesis describe sistemáticamente los desarrollos teóricos sobre la legitimación de la protección penal del medio ambiente en los sistemas de civil law y common law. En este sentido, el trabajo analiza los puntos de encuentro y divergencia en la evolución teórica de estos dos sistemas jurídicos.
description: At a worldwide perspective, the growing tendency to criminalize behaviors that threaten the environment, largely influenced by the requirements of international law, has led to question the relevance of criminal law for its protection. Raising the general question about the legitimacy of criminal intervention to protect certain interests, and understanding that criminal law represents the most severe expression of the state's punitive power, this research systematically outlines the theories on the legitimacy of criminal protection of the environment in civil law and common law systems. In this sense, the thesis analyzes the points of convergence and divergence in the theoretical evolution of these two legal systems.
Additional file 1 of Comparing the performance of machine learning and conventional models for predicting atherosclerotic cardiovascular disease in a general Chinese population
Creators: name: Fan, Zihao
name: Du, Zhi
name: Fu, Jinrong
name: Zhou, Ying
name: Zhang, Pengyu
name: Shi, Chuning
name: Sun, Yingxian
Publisher: name: figshare
Year: 2023
Subjects: Medicine
Biotechnology
Biological Sciences not elsewhere classified
Information Systems not elsewhere classified
Cancer

description: Additional file 1. Health Survey Form for Rural Residents in Liaoning Province (Version 2012).
Sisyra gruwelli Oliver S. Flint 2012, n.sp.
Creators: name: Oliver S. Flint, Jr.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Neuroptera
Sisyridae
Sisyra
Sisyra gruwelli

description: Sisyra gruwelli n.sp.
(Figures 3, 4)
 Comments. Of the known species of Sisyra there is no other with such a narrow, elongate, angulate coxopodite bearing abroad mesal flange.
As with the preceding species, this example appears to have faded over time, and the wings are badly broken with various fragments missing. It, too, has not cleared well.
 Description. Male: Forewing length 3.5mm. Preserved in 80% ethyl alcohol, almost uniformly light brown. Antenna with 33 segments, 24 basal segments (including scape and pedicel) dark brown, 9 terminal segments pale. Head and body light brown. Wings light brown; cells not noticeably marked. Forewing with radial and medial venation appearing the same as in S. cameroonensis but Cu 1 has 3 branches reaching the wing margin in addition to the apical fork. Male genitalia (Fig. 3, 4): Epiproct not clearly distinguishable from membrane. Eighth sternite not apparent, but sternum a large irregular lobe extending ventrad. Gonarcus a dark band connecting bases of coxopodites with a small mesal knob, and extending ventrad from their mesal bases. Parameres not seen. Coxopodite 8-9 times as long as broad, and angulate at midlength in lateral aspect; in dorsal aspect, basal half narrow, of uniform width, beyond midlength with a broad mesal flange and a smaller rounded margin laterally, apex with a pair of fingerlike processes (1 seemingly with a small apical seta); basal section with a large mesally directed seta arising from an enlarged base, mesal margin of flange with 2 small setae from enlarged bases and a few small setae, apex of coxopodite with 5-6 long, enlarged setae arising from conspicuous bases.
 Type material. Holotype, male: CAMEROON: [Centre Prov.] Libamba, 10km E Makak [3 o 37’N, 11 o 2’E], 11 Feb 1974, J.A. Gruwell, at black light (NMNH).
 Etymology. The species is dedicated to Dr. John A. Gruwell who collected this most unusual species and other interesting aquatic insects in Cameroon.
description: Published as part of Oliver S. Flint, Jr., 2012, New species, records, and a synonymy of African Sisyridae (Neuroptera, pp. 1-6 in Insecta Mundi 2012 (223) on pages 2-4, DOI: 10.5281/zenodo.5174176