cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fortalecimiento del pensamiento geométrico mediante el uso del software GEONEXT en quinto grado
Creators: name: Palacio Brochero, Henry
Publisher: name: Universidad de Cartagena
Year: 2021
Subjects: subject: Tecnología educativa
subject: Innovaciones educativas
subject: Sitios web educativos
subject: Geometría – Enseñanza

description: El presente trabajo tiene como objetivo diseñar una intervención pedagógica mediada por el uso del software Geonext, como apoyo al fortalecimiento del pensamiento geométrico en estudiantes de quinto grado de la Institución Educativa San Luis Beltrán de María la BajaBolívar. El estudio se fundamentó en los aportes teóricos como el trabajo desarrollado por Jean Piaget (1969), “las cuales revelaron que el desarrollo del pensamiento geométrico se inicia a muy temprana edad y sufre una evolución que distingue tres etapas la pre operacional, operaciones concretas y operaciones formales, lo que recoge Holloway en Concepción del espacio en el niño pequeño según Piaget”.), entre otros. Metodológicamente, se enmarcó en el tipo de investigación de tipo cuantitativo, debido a que busca determinar la incidencia que tiene la implementación de una intervención pedagógica mediada por el software educativo Geonext en el fortalecimiento del pensamiento geométrico del área de matemática en los estudiantes del grado quinto, se utilizó la Investigación Acción Pedagógica (IAP), como modelo, puesto que, se pretende orientar este proyecto a un cambio social en el cual las personas de una comunidad, en este caso, los estudiantes de grado quinto de la Institución Educativa San Luis Beltran.La investigación se desarrolló con un censo poblacional de 41 estudiantes del grado quinto de la institución antes mencionada, la técnica de recolección de datos fue la observación mediante encuesta, con dos instrumentos de elaboración propia, validados por 5 expertos. Los resultados obtenidos en la prueba final, en cada una de sus actividades en cuanto a los aspectos estudiados, comparados con los resultados de la prueba inicial o diagnóstica, muestran en su mayoría avances significativos en cuanto al desarrollo del pensamiento geométrico en los estudiantes de quinto grado.
Driver Locations Harvesting Attack on pRide
Creators: name: Murthy, Shyam
name: Vivek, Srinivas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Privacy preservation in Ride-Hailing Services (RHS) is intended to protect privacy of drivers and riders. pRide, published in IEEE Trans. Vehicular Technology 2021, is a prediction based privacy-preserving RHS protocol to match riders with an optimum driver. In the protocol, the Service Provider (SP) homomorphically computes Euclidean distances between encrypted locations of drivers and rider. Rider selects an optimum driver using decrypted distances augmented by a new-ride-emergence prediction. To improve the effectiveness of driver selection, the paper proposes an enhanced version where each driver gives encrypted distances to each corner of her grid. To thwart a rider from using these distances to launch an inference attack, the SP blinds these distances before sharing them with the rider. In this work, we propose a passive attack where an honest-but-curious adversary rider who makes a single ride request and receives the blinded distances from SP can recover the constants used to blind the distances. Using the unblinded distances, rider to driver distance and Google Nearest Road API, the adversary can obtain the precise locations of responding drivers. We conduct experiments with random on-road driver locations for four different cities. Our experiments show that we can determine the precise locations of at least 80% of the drivers participating in the enhanced pRide protocol.
Reconnoitering the pre-colonial chiefdoms and the emergence of social complexity in Kilimanjaro, Tanzania
Creators: name: Valerian Silayo, Valence
Publisher: name: La Trobe
Year: 2023

description: Submission note: A thesis submitted in total fulfillment of the requirements for the degree of Doctor of Philosophy to the Faculty of Humanities and Social Sciences, Department of Archaeology & History, La Trobe University, Bundoora, Victoria.
Spontaneous Emission from Excited Quantum Kinks
Creators: name: Evslin, Jarah
name: Martín-Caro, Alberto García
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Many kink solutions enjoy internal excitations, called shape modes. In some 1+1d scalar models, such as the $ϕ^4$ double-well model, when a kink's shape mode is excited twice it may decay to a ground state kink plus a meson. We analytically calculate the decay rates of both the twice-excited shape mode and also a coherent state corresponding to the classically excited shape mode. In the case of the $ϕ^4$ model, we find that the latter agrees with the classical result of Manton and Merabet.
description: 20 pages, no figures
Global study of nuclear modifications on parton distribution functions
Creators: name: Wang, Rong
name: Chen, Xurong
name: Fu, Qiang
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A global analysis of nuclear medium modifications of parton distributions is presented using deeply inelastic scattering data of various nuclear targets. Two obtained data sets are provided for quark and gluon nuclear modification factors, referred as nIMParton16. One is from the global fit only to the experimental data of isospin-scalar nuclei (Set A), and the other is from the fit to all the measured nuclear data (Set B). The scale-dependence is described by DGLAP equations with nonlinear corrections in this work. The Fermi motion and off-shell effect, nucleon swelling, and parton-parton recombination are taken into account together for modeling the complicated $x$-dependence of nuclear modification. The nuclear gluon shadowing in this paper is dynamically generated by the QCD evolution of parton splitting and recombination processes with zero gluon density at the input scale. Sophisticated nuclear dependence of nuclear medium effects is studied with only two free parameters. With the obtained free parameters from the global analysis, the nuclear modifications of parton distribution functions of unmeasured nuclei can be predicted in our model. Nuclear modification of deuteron is also predicted and shown with recent measurement at JLab.
description: 12 pages, 9 figures, minor modifications
Electronic structure and physical properties of EuAuAs single crystal
Creators: name: Malick, S.
name: Singh, J.
name: Laha, A.
name: Kanchana, V.
name: Hossain, Z.
name: Kaczorowski, D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: High-quality single crystals of EuAuAs were studied by means of powder x-ray diffraction, magnetization, magnetic susceptibility, heat capacity, electrical resistivity and magnetoresistance measurements. The compound crystallizes with a hexagonal structure of the ZrSiBe type (space group $P6_3/mmc$). It orders antiferromagnetically below 6 K due to the magnetic moments of divalent Eu ions. The electrical resistivity exhibits metallic behavior down to 40 K, followed by a sharp increase at low temperatures. The magnetotransport isotherms show a distinct metamagnetic-like transition in concert with the magnetization data. The antiferromagnetic ground state in \mbox{EuAuAs} was corroborated in the \textit{ab initio} electronic band structure calculations. Most remarkably, the calculations revealed the presence of nodal line without spin-orbit coupling and Dirac point with inclusion of spin-orbit coupling. The \textit{Z}$_2$ invariants under the effective time reversal and inversion symmetries make this system nontrivial topological material. Our findings, combined with experimental analysis, makes EuAuAs a plausible candidate for an antiferromagnetic topological nodal-line semimetal.
Effects of early family / parenting programs on antisocial behavior and delinquency
Creators: name: Piquero, Alex R.
name: Farrington, David P.
name: Welsh, Brandon C.
name: Tremblay, Richard
name: Jennings, Wesley G.
Publisher: name: Universität Tübingen
Year: 2008
Subjects: subject: Jugendkriminalität , Prävention
subject: parenting programs
subject: delinquency
subject: effects

description: Early family/parent training programs are intended to serve many purposes, one of them being the prevention of child behavior problems including antisocial behavior and delinquency. While early family/parent training may not often be implemented with the expressed aim of preventing antisocial behavior, delinquency, and crime – sometimes these programs are aimed at more general, non-crime outcomes – its relevance to the prevention of crime has been suggested in developmentally-based criminological and psychological literatures. The main objective of this review is to assess the available research evidence on the effects of early family/parent training on child behavior problems including antisocial behavior and delinquency. In addition to assessing the overall impact of early family/parent training, this review will also investigate, to the extent possible, in which settings and under what conditions it is most effective.
Deep orbital search for additional planets in the HR 8799 system
Creators: name: Thompson, William
name: Marois, Christian
name: Ó, Clarissa R. Do
name: Konopacky, Quinn
name: Ruffio, Jean-Baptiste
name: Wang, Jason
name: Skemer, Andy J.
name: De Rosa, Robert J.
name: Macintosh, Bruce
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The HR 8799 system hosts four massive planets orbiting 15 and 80 AU. Studies of the system's orbital stability and its outer debris disk open the possibility of additional planets, both interior to and exterior to the known system. Reaching a sufficient sensitivity to search for interior planets is very challenging due to the combination of bright quasi static speckle noise close to the stellar diffraction core and relatively fast orbital motion. In this work, we present a deep L-band imaging campaign using NIRC2 at Keck comprising 14 observing sequences. We further re-reduce archival data for a total of 16.75 hours, one of the largest uniform datasets of a single direct imaging target. Using a Bayesian modeling technique for detecting planets in images while compensating for plausible orbital motion, we then present deep limits on the existence of additional planets in the HR 8799 system. The final combination shows a tentative candidate, consistent with 4-7 $M_{jup}$ at 4-5 AU, detected with an equivalent false alarm probability better than $3σ$. This analysis technique is widely applicable to archival data and to new observations from upcoming missions that revisit targets at multiple epochs.
description: 26 pages, 18 figures. Accepted to AJ. Data available: DOI 10.5281/zenodo.6823071. Updated with corrected citations and higher resolution stability plots
Deliverable 3.4: Manufacturer-Supplier's Intelligence Framework overview and  Technical Description
Creators: name: Deborah, Leone
name: Alessandro, Fontana
Publisher: name: Zenodo
Year: 2024

description: Linked to T3.4. Provides the Manufacturer's Suppliers Intelligence Framework Overview and Technical Descriptions for the CircThread projects including as outcomes: an overview of the current state of the MAGA Manufacturer Suppliers Intelligence Framework, a description of the MAGA enhancement for CircThread supplier assessment and quotation based on the iLCS&CA framework from T3.1 and T3.2 for estimating sustainability impacts for comparison and selection of suppliers, a description of the integration of Bill of Materials and manufacturer ERP software data exchange links with a framework for material composition assessment including integrated REACH & RoHS compliance checks. The results will be used of this deliverable in the MAGA CircThread service implementation in T6.6.
Turbulent compressible fluid: renormalization group analysis, scaling regimes, and anomalous scaling of advected scalar fields
Creators: name: Antonov, N. V.
name: Gulitskiy, N. M.
name: Kostenko, M. M.
name: Lučivjanský, T.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study a model of fully developed turbulence of a compressible fluid, based on the stochastic Navier-Stokes equation, by means of the field theoretic renormalization group. In this approach, scaling properties are related to the fixed points of the renormalization group equations. Previous analysis of this model near the real-world space dimension 3 identified some scaling regime [Theor. Math. Phys., 110, 3 (1997)]. The aim of the present paper is to explore the existence of additional regimes, that could not be found using the direct perturbative approach of the previous work, and to analyze the crossover between different regimes. It seems possible to determine them near the special value of space dimension $4$ in the framework of double $y$ and $\varepsilon$ expansion, where $y$ is the exponent associated with the random force and $\varepsilon=4-d$ is the deviation from the space dimension $4$. Our calculations show that there exists an additional fixed point that governs scaling behavior. Turbulent advection of a passive scalar (density) field by this velocity ensemble is considered as well. We demonstrate that various correlation functions of the scalar field exhibit anomalous scaling behavior in the inertial-convective range. The corresponding anomalous exponents, identified as scaling dimensions of certain composite fields, can be systematically calculated as a series in $y$ and $\varepsilon$. All calculations are performed in the leading one-loop approximation.
description: 28 pages, 6 figures. Version revisited by the journal and accepted for publication
title: Analyse von Komplikationen und Therapie der chronisch nicht-bakteriellen Osteomyelitis (CNO) im Langzeitverlauf
Creators: name: Schwarz, Tobias
name: Niewerth, Martina
name: Hospach, Anton
name: Holl-Wieden, Annette
name: Ganser, Gerd
name: Minden, Kirsten
name: Girschick, Hermann
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Die CNO ist eine Erkrankung unklarer Ätiologie, welche gekennzeichnet ist durch eine aberrante Aktivierung des angeborenen Immunsystems. Mit einer geschätzten Inzidenz von 0,4 pro 100.000 Kindern ist die CNO eine seltene Erkrankung, weshalb epidemiologische Daten zum Krankheitsverlauf,[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 43. Kongress der Deutschen Gesellschaft für Rheumatologie (DGRh); 29. Jahrestagung der Deutschen Gesellschaft für Orthopädische Rheumatologie (DGORh); 25. wissenschaftliche Jahrestagung der Gesellschaft für Kinder- und Jugendrheumatologie (GKJR)
Estudio de los hábitos y motivos de consumo de alimentos de los habitantes de estrato 1 de la ciudad de Cartagena
Creators: name: Muñoz Morales, Paquiney
name: Locarno Pulgar, Jorge
Publisher: name: Universidad de Cartagena
Year: 2001
Subjects: Consumidores
Comportamiento del consumidor

description: Tesis (Administrador de Empresas).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración de Empresas, 2001
description: El presente estudio tiene por objeto determinar y evaluar los hábitos y motivos de consumo de alimentos de las familias en el estrato 1 de la ciudad de Cartagena De Indias.
Nanosecond gating of superconducting nanowire single-photon detectors using cryogenic bias circuitry
Creators: name: Hummel, Thomas
name: Widhalm, Alex
name: HÖpker, Jan Philipp
name: JÖns, Klaus D.
name: Chang, Jin
name: Fognini, Andreas
name: Steinhauer, Stephan
name: Zwiller, Val
name: Zrenner, Artur
name: Bartley, Tim J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Superconducting nanowire single-photon detectors (SNSPDs) show near unity efficiency, low dark count rate, and short recovery time. Combining these characteristics with temporal control of SNSPDs broadens their applications as in active de-latching for higher dynamic range counting or temporal filtering for pump-probe spectroscopy or LiDAR. To that end, we demonstrate active gating of an SNSPD with a minimum off-to-on rise time of 2.4 ns and a total gate length of 5.0 ns. We show how the rise time depends on the inductance of the detector in combination with the control electronics. The gate window is demonstrated to be fully and freely, electrically tunable up to 500 ns at a repetition rate of 1.0 MHz, as well as ungated, free-running operation. Control electronics to generate the gating are mounted on the 2.3 K stage of a closed-cycle sorption cryostat, while the detector is operated on the cold stage at 0.8 K. We show that the efficiency and timing jitter of the detector is not altered during the on-time of the gating window. We exploit gated operation to demonstrate a method to increase in the photon counting dynamic range by a factor 11.2, as well as temporal filtering of a strong pump in an emulated pump-probe experiment.
Intrusion Detection System Using Visualization and Integration Technique
Creators: name: Denboba, Sisay
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2006

description: Intrusion detection is an area of ever increasing importance. Currently existing Intrusion Detection Systems (IDS) lack visualization and false alarms detection capabilities. Researchers have proposed integrated systems which may reduce the percentage of false alarms. This work addresses the above stated problems by integrating Self-Organized Map (SOM) with Genetic Algorithm (GA) so as to minimize the false alarms and also to provide visualization capability to the new IDS. SOM is an unsupervised Artificial Neural Network (ANN) learning algorithm that attempts to visualize a large dataset in compact representation. GA is an evolutionary computing type of artificial intelligence algorithm, which is better for optimization, feature selection and clustering problems. The performance of the model is measured using Knowledge Discovery and Data Mining (KDD) Cup 99 dataset, which was prepared for The Third International Knowledge Discovery and Data Mining (DM) Tools Competition for researchers who work on intrusion detection. The work also includes GA based feature selection to further improve the performance of the model. The result shows 94.3 % of intrusion detection rate with 2.93% of false alarm rate.
"La responsabilidad del estado"
Creators: name: Klee Barrios, Jesús Adolfo
Publisher: name: Universidad de Cartagena
Year: 1972
Subjects: Estado - Colombia

description: Tesis (Abogado) -- Universidad de Cartagena. Facultad de Derecho y Ciencias Políticas, 1972.
description: Estudio de la responsabilidad, institucionalizado en nuestro país, en situaciones dispersas en distintos estatutos legales, como instrumento para lograr de él la indemnización por los daños morales o sociales.
title: New data on scleroderma renal crisis and predictive factors from more than 3000 patients
Creators: name: Moinzadeh, Pia
name: Riemekasten, Gabriela
name: Fierlbeck, Gerhard
name: Henes, Jörg
name: Kötter, Ina
name: Kreuter, Alexander
name: Lahner, Nina
name: Müller-Ladner, Ulf
name: Melchers, Inga
name: Blank, Norbert
name: Sunderkötter, Cord
name: Günther, Claudia
name: Distler, Jörg H. W.
name: Juche, Aaron
name: Worm, Margitta
name: Karrer, Sigrid
name: Simon, Jan-C.
name: Pfeiffer, Christiane
name: Genth, Ekkehard
name: Aberer, Elisabeth
name: Steinbrink, Kerstin
name: Kuhn, Annegret
name: Hein, Rüdiger
name: Seitz, Cornelia S.
name: Mensing, Hartwig
name: Lehmann, Percy
name: Sardy, Miklos
name: Neeck, Gunther
name: Fiehn, Christoph
name: Weber, Manfred
name: Goebeler, Manfred
name: Kuhr, Kathrin
name: Krieg, Thomas
name: Hunzelmann, Nico
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Introduction: Renal crisis is rare but still a medical emergency in patients with SSc. To improve detection and follow-up of patients with SSc, the German Network for Systemic Scleroderma (DNSS) was founded 2003, including more than 40 medical centers. Methods: More than 3000 patients have been grouped[for full text, please go to the a.m. URL]
description: 43. Kongress der Deutschen Gesellschaft für Rheumatologie (DGRh); 29. Jahrestagung der Deutschen Gesellschaft für Orthopädische Rheumatologie (DGORh); 25. wissenschaftliche Jahrestagung der Gesellschaft für Kinder- und Jugendrheumatologie (GKJR)
The unpredictable nature of CD8+ T cell responses to influenza A virus
Creators: name: Di Carluccio, Anthony
Publisher: name: La Trobe
Year: 2023

description: Submission note: A thesis submitted in total fulfilment of the requirements for the degree of Doctor of Philosophy to the Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, College of Science, Health and Engineering, La Trobe University, Bundoora.
Phase transitions and topological properties of the 5/2 quantum Hall states with strong Landau-level mixing
Creators: name: Luo, Wenchen
name: Zhang, Wei
name: Hu, Yutao
name: Wang, Hao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We numerically study a 5/2 fractional quantum Hall system with even number of electrons using the exact diagonalization where both the strong Landau level (LL) mixing and a finite width of the quantum well have been considered and adapted into a screened Coulomb interaction. With the principal component analysis, we are able to recognize a compressible-incompressible phase transition in the parameter space made of the magnetic field and the quantum well width by the competition between the first two leading components of the ground states wave functions, which is consistent with the low-lying spectral feature and previous works in the odd-electron system. In addition, the presence of the subdominant third component suggests an incompressible transition occurring as the LL-mixing strength grows into a certain parameter region associated with the ZnO experiments. We further investigate the strongly LL-mixed phase in this emerging region with the Hall viscosity, wave function overlaps, and the entanglement spectra. Results show it can be well described as a particle-hole symmetrized Pfaffian state with the dual topological properties of the Pfaffian and the anti-Pfaffian states.
Assessment Of The Addis Ababa Light Railway Transit Project Success: The Users Perspective
Creators: name: Awraris, Samuel
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: The purpose of this study is to assess the Addis Ababa Light Railway Transit Project Success from the users" perspective in the line of East-West Light Railway Transit, Due to this plan; people are forced to use only Stations and Squares to cross, as a result of this problems like high number of pedestrians flow on stations, high traffic congestion in station areas, and high fuel consumption are pervasive. The objectives of this research are to assess the challenges that pedestrians and drivers are facing and to assess the stakeholders" involvement in the project planning and implementation. To attain those objectives of the study; the researcher used descriptive research designs. The universes of study were Drivers and Pedestrians and sample sizes for pedestrians were 97. The researcher used probability sampling technique to select 97 pedestrians on the selected stations which was Simple random sampling and convenient sampling to select a representative from the railway corporation and to select an expert. In addition to that the researcher used three different kinds of data gathering tools which were Questionnaire, Interview, and Document Analysis. The result of the study was that, the design plan of the railway was adapted from Chain, the pedestrians and drivers are facing a challenge, safeties of pedestrians were not considered during the project plan, most pedestrian don"t feel safety when crossing, more CO2were released to the environment due to congestion near stations and the involvement of stakeholders were not sufficient, In addition to that thought the society were affected by the project implementation they were not considered as a stakeholder.
Role of substrate clamping on anisotropy and domain structure in the canted antiferromagnet $α$-Fe$_2$O$_3$
Creators: name: Wittmann, Angela
name: Gomonay, Olena
name: Litzius, Kai
name: Kaczmarek, Allison
name: Kossak, Alexander E.
name: Wolf, Daniel
name: Lubk, Axel
name: Johnson, Tyler N.
name: Tremsina, Elizaveta A.
name: Churikova, Alexandra
name: Büttner, Felix
name: Wintz, Sebastian
name: Mawass, Mohamad-Assaad
name: Weigand, Markus
name: Kronast, Florian
name: Scipioni, Larry
name: Shepard, Adam
name: Newhouse-Illig, Ty
name: Greer, James A
name: Schütz, Gisela
name: Birge, Norman O.
name: Beach, Geoffrey S. D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Antiferromagnets have recently been propelled to the forefront of spintronics by their high potential for revolutionizing memory technologies. For this, understanding the formation and driving mechanisms of the domain structure is paramount. In this work, we investigate the domain structure in a thin-film canted antiferromagnet $α$-Fe$_2$O$_3$. We find that the internal destressing fields driving the formation of domains do not follow the crystal symmetry of $α$-Fe$_2$O$_3$, but fluctuate due to substrate clamping. This leads to an overall isotropic distribution of the Néel order with locally varying effective anisotropy in antiferromagnetic thin films. Furthermore, we show that the weak ferromagnetic nature of $α$-Fe$_2$O$_3$ leads to a qualitatively different dependence on magnetic field compared to collinear antiferromagnets such as NiO. The insights gained from our work serve as a foundation for further studies of electrical and optical manipulation of the domain structure of antiferromagnetic thin films.
description: 9 pages, 5 figures
A New Flaring Black Widow Candidate and Demographics of Black Widow Millisecond Pulsars in the Galactic Field
Creators: name: Swihart, Samuel J.
name: Strader, Jay
name: Chomiuk, Laura
name: Aydi, Elias
name: Sokolovsky, Kirill V.
name: Ray, Paul S.
name: Kerr, Matthew
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the discovery of a new optical/X-ray source likely associated with the Fermi $γ$-ray source 4FGL J1408.6-2917. Its high-amplitude periodic optical variability, large spectroscopic radial velocity semi-amplitude, evidence for optical emission lines and flaring, and X-ray properties together imply the source is probably a new black widow millisecond pulsar binary. We compile the properties of the 41 confirmed and suspected field black widows, finding a median secondary mass of $0.027\pm0.003\,M_{\odot}$. Considered jointly with the more massive redback millisecond pulsar binaries, we find that the "spider" companion mass distribution remains strongly bimodal, with essentially zero systems having companion masses between $\sim0.07-0.1\,M_{\odot}$. X-ray emission from black widows is typically softer and less luminous than in redbacks, consistent with less efficient particle acceleration in the intrabinary shock in black widows, excepting a few systems that appear to have more efficient "redback-like" shocks. Together black widows and redbacks dominate the census of the fastest-spinning field millisecond pulsars in binaries with known companion types, making up $\gtrsim$80% of systems with $P_{\rm{spin}}<2\,\rm{ms}$. Similar to redbacks, the neutron star masses in black widows appear on average significantly larger than the canonical $1.4\,M_{\odot}$, and many of the highest-mass neutron stars claimed to date are black widows with $M_{\rm{NS}}\gtrsim2.1\,M_{\odot}$. Both of these observations are consistent with an evolutionary picture where spider millisecond pulsars emerge from short orbital period progenitors that had a lengthy period of mass transfer initiated while the companion was on the main sequence, leading to fast spins and high masses.
description: 18 pages text, 9 figures, 5 tables; Accepted to ApJ
Efficient algorithms for computing the Euler-Poincaré characteristic of symmetric semi-algebraic sets
Creators: name: Basu, Saugata
name: Riener, Cordian
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: Symbolic Computation (cs.SC)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 14P25, 68W30

description: Let $\mathrm{R}$ be a real closed field and $\mathrm{D} \subset \mathrm{R}$ an ordered domain. We consider the algorithmic problem of computing the generalized Euler-Poincaré characteristic of real algebraic as well as semi-algebraic subsets of $\mathrm{R}^k$, which are defined by symmetric polynomials with coefficients in $\mathrm{D}$. We give algorithms for computing the generalized Euler-Poincaré characteristic of such sets, whose complexities measured by the number the number of arithmetic operations in $\mathrm{D}$, are polynomially bounded in terms of $k$ and the number of polynomials in the input, assuming that the degrees of the input polynomials are bounded by a constant. This is in contrast to the best complexity of the known algorithms for the same problems in the non-symmetric situation, which are singly exponential. This singly exponential complexity for the latter problem is unlikely to be improved because of hardness result ($\#\mathbf{P}$-hardness) coming from discrete complexity theory.
description: 29 pages, 1 Figure. arXiv admin note: substantial text overlap with arXiv:1312.6582
Evolución del esfuerzo fiscal en el municipio de Magangué y su incidencia en la inversión social (2000-2010)
Creators: name: Arroyo Barboza, Marlon
name: Escobar Ballestas, Cleiver
Publisher: name: Universidad de Cartagena
Year: 2012
Subjects: Hacienda pública
Finanzas públicas

description: Tesis (Especialista en Finanzas) -- Universidad de Cartagena. Facultad de ciencias económicas. Especialización en finanzas, 2012
description: El municipio de Magangué Bolívar no es ajeno a las crisis y problemas financieros y fiscales que se presentan a nivel departamental como nacional. Es primordial para cualquier gobierno contar con fuentes de financiamiento que le permita dar solución a sus necesidades más apremiantes como educación, salud, recreación y servicios públicos, que impulsen el crecimiento y desarrollo del municipio.
title: Krankheitsunabhängige Prädiktoren für Fatigue in fünf entzündlich-rheumatischen Erkrankungen
Creators: name: Huscher, Dörte
name: Albrecht, Katinka
name: Bischoff, Sascha
name: Thiele, Katja
name: Eidner, Thorsten
name: Karberg, Kirsten
name: Von Hinüber, Ulrich
name: Zink, Angela
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Verschiedene Untersuchungen haben eine hohe Korrelation von Fatigue mit anderen patientenberichteten Outcomes wie Schmerz und Krankheitsaktivität bei Patienten mit entzündlich-rheumatischen Erkrankungen gezeigt. Gibt es patientenspezifische Prädiktoren für Fatigue,[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 43. Kongress der Deutschen Gesellschaft für Rheumatologie (DGRh); 29. Jahrestagung der Deutschen Gesellschaft für Orthopädische Rheumatologie (DGORh); 25. wissenschaftliche Jahrestagung der Gesellschaft für Kinder- und Jugendrheumatologie (GKJR)
The Impact of Beam Variations on Power Spectrum Estimation for 21-cm Cosmology I: Simulations of Foreground Contamination for HERA
Creators: name: Kim, Honggeun
name: Nhan, Bang D.
name: Hewitt, Jacqueline N.
name: Kern, Nicholas S.
name: Dillon, Joshua S.
name: Acedo, Eloy de Lera
name: Dynes, Scott
name: Mahesh, Nivedita
name: Fagnoni, Nicolas
name: DeBoer, David R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Detecting cosmological signals from the Epoch of Reionization (EoR) requires high-precision calibration to isolate the cosmological signals from foreground emission. In radio interferometery, perturbed primary beams of antenna elements can disrupt the precise calibration, which results in contaminating the foreground-free region, or the EoR window, in the cylindrically averaged power spectrum. For Hydrogen Epoch of Reionization Array (HERA), we simulate and characterize the perturbed primary beams induced by feed motions such as axial, lateral, and tilting motions, above the 14-meter dish. To understand the effect of the perturbed beams, visibility measurements are modeled with two different foreground components, point sources and diffuse sources, and we find different feed motions present a different reaction to each type of sky source. HERA's redundant-baseline calibration in the presence of non-redundant antenna beams due to feed motions introduces chromatic errors in gain solutions, which produces foreground power leakage into the EoR window. The observed leakage from vertical feed motions comes predominately from point sources around zenith. Furthermore, the observed leakage from horizontal and tilting feed motion comes predominately from the diffuse components near the horizon. Mitigation of chromatic gain errors will be necessary for robust detection of the EoR signals with minimal foreground bias, and this will be discussed in the subsequent paper.
description: Accepted for publication in ApJ
Multipartite entanglement generation in coupled microcavity arrays
Creators: name: Bostelmann, Marc
name: Wilksen, Steffen
name: Lohof, Frederik
name: Gies, Christopher
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider photonic arrays made from quantum emitters in optically coupled microcavities as a platform for entanglement generation. These offer a large degree of tunability with the possibility of site-selective optical excitation. Coherent pumping is considered to drive transitions between vacuum and entangled target states both in a time-dependent manner, and in a quantum bath engineering approach to create entanglement in the steady-state. We demonstrate a numerical scheme that allows to generalize the determination of excitation parameters to larger array sizes and different classes of entangled states. This study is a step towards using coupled cavity arrays as a hardware platform in novel quantum-photonic applications in quantum computing and quantum machine learning.
Stellar chromospheric activities revealed from the LAMOST-K2 time-domain survey
Creators: name: Han, Henggeng
name: Wang, Song
name: Bai, Yu
name: Yang, Huiqin
name: Fang, Xiangsong
name: Liu, Jifeng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: By using the LAMOST time-domain survey data, we study stellar activities based on the $\rm{H_α}$ lines for about 2000 stars in four $K$2 plates. Two indices, $R_{\rm{Hα}}^{'}$ and $R_{\rm{Hα}}^{+}$, are computed from LAMOST spectra, the former of which is derived by excluding the photospheric contributions to the $\rm{H_α}$ lines, while the latter is derived by further subtracting the non-dynamo driven chromospheric emission. Meanwhile, the periodicity and variation amplitudes are computed from \emph{K2} light curves. Both the $R_{\rm{Hα}}^{'}$-Ro relation and $R_{\rm{Hα}}^{+}$-Ro relation show complicated profiles in the non-saturated decay region. Hot stars show flatter slopes and higher activity level than cool stars, and the behaviour is more notable in the $R_{\rm{Hα}}^{+}$-$R_{o}$ relation. This is consistent with recent studies using other activity proxies, including $L_{\rm{x}}/L_{\rm{bol}}$, $R_{\rm{HK}}^{'}$ and amplitudes of optical light curves. % This may suggest different kinds of stars follow different power laws in the decay region. Most of our targets have multiple observations, and some of them exhibit significant variability of ${\rm{Hα}}$ emissions, which may cause the large scatters shown in the decay region. We find three targets exhibiting positive correlation in rotational phase, possibly indicating that their optical light curves are dominated by hot faculae rather than cool starspots.
description: 20 pages, 34 figures, accepted for publication in ApJS
Heralded quantum controlled phase gates with dissipative dynamics in macroscopically-distant resonators
Creators: name: Qin, Wei
name: Wang, Xin
name: Miranowicz, Adam
name: Zhong, Zhirong
name: Nori, Franco
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Heralded near-deterministic multi-qubit controlled phase gates with integrated error detection have recently been proposed by Borregaard et al. [Phys. Rev. Lett. 114, 110502 (2015)]. This protocol is based on a single four-level atom (a heralding quartit) and $N$ three-level atoms (operational qutrits) coupled to a single-resonator mode acting as a cavity bus. Here we generalize this method for two distant resonators without the cavity bus between the heralding and operational atoms. Specifically, we analyze the two-qubit controlled-Z gate and its multi-qubit-controlled generalization (i.e., a Toffoli-like gate) acting on the two-lowest levels of $N$ qutrits inside one resonator, with their successful actions being heralded by an auxiliary microwave-driven quartit inside the other resonator. Moreover, we propose a circuit-quantum-electrodynamics realization of the protocol with flux and phase qudits in linearly-coupled transmission-line resonators with dissipation. These methods offer a quadratic fidelity improvement compared to cavity-assisted deterministic gates.
description: Published in Phys. Rev. A
Exploration of benefit finding among men diagnosed with prostate cancer: a cross-sectional study
Creators: name: Pascoe, Elizabeth
Publisher: name: La Trobe
Year: 2023

description: Submission note: This thesis is submitted in total fulfilment of the requirement for the Doctor of Philosophy by published work to the School of Nursing and Midwifery, College of Science, Health, and Engineering, La Trobe University, Bundoora.

Thesis with publications.
Benefit-cost analyses of sentencing
Creators: name: McDougall, Cynthia
name: Cohen, Mark A.
name: Swaray, Raymond
name: Perry, Amanda
Publisher: name: Universität Tübingen
Year: 2008
Subjects: subject: Strafzumessung
subject: 360
subject: sentencing
subject: benefit-cost analyses

description: Sentencing policies are most frequently designed by policy-makers and implemented by the courts with the aim of punishing, deterring and rehabilitating offenders in order to reduce future re-offending. However many sentencing decisions are made without knowledge of the effectiveness of sentences in achieving their objectives, or the costs and benefits of the different sentencing alternatives. The following systematic review was conducted in order to address these questions and to review the existing evidence on the costs and benefits of different sentencing options. Results from costeffectiveness studies were retained to provide supporting information. The objective of the review was to identify and assess the quality of studies of the costs and benefits of different sentencing options.
Diseño de la empresa Comercializadora Internacional Lolys & CIA Ltda
Creators: name: Banquez Perna, Reynero
name: Perez Lobo, Edinson
Publisher: name: Universidad de Cartagena
Year: 1987
Subjects: Creación de empresa

description: Tesis (Economista).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Economía, 1987.
description: El presente estudio tiene por objeto mostrar el carácter eminentemente comercial de la papaya y brindar asesoría a los productores que exporten a través de la comercializadora.
High Gradient Testing of off-Axis Coupled C-band Cu and CuAg Accelerating Structures
Creators: name: Schneider, Mitchell
name: Zuboraj, Muhammed
name: Dolgashev, Valery
name: Lewellen, John J
name: Tantawi, Sami G
name: Fleming, Ryan
name: Gorelov, Dmitry
name: Middendorf, Mark
name: Nanni, Emilio A
name: Simakov, Evgenya I
Publisher: name: arXiv
Year: 2022
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Applied Physics (physics.app-ph)
subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: We report the results of high gradient testing of two single cell off axis coupled standing wave accelerating structures. Two brazed standing wave side coupled structures with the same geometry were tested one made of pure copper Cu and one made of a copper silver CuAg alloy with silver concentration of 0.08 percent. A peak surface electric field of 450 MV per m was achieved in the CuAg structure for a klystron input power of 14.5 MW and a 1 mirco s pulse length which was 25 percent higher than the peak surface electric field achieved in the Cu structure. The superb high gradient performance was achieved because of the two major optimizations in the cavity geometry 1 the shunt impedance of the cavity was maximized for a peak surface electric field to accelerating gradient ratio of 2 for a fully relativistic particle 2 the peak magnetic field enhancement due to the input coupler was minimized to limit pulse heating. These tests allow us to conclude that C band accelerating structures can operate at peak fields similar to those at higher frequencies while providing a larger beam iris for improved beam transport.
End-to-end Wind Turbine Wake Modelling with Deep Graph Representation Learning
Creators: name: Li, Siyi
name: Zhang, Mingrui
name: Piggott, Matthew D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: Wind turbine wake modelling is of crucial importance to accurate resource assessment, to layout optimisation, and to the operational control of wind farms. This work proposes a surrogate model for the representation of wind turbine wakes based on a state-of-the-art graph representation learning method termed a graph neural network. The proposed end-to-end deep learning model operates directly on unstructured meshes and has been validated against high-fidelity data, demonstrating its ability to rapidly make accurate 3D flow field predictions for various inlet conditions and turbine yaw angles. The specific graph neural network model employed here is shown to generalise well to unseen data and is less sensitive to over-smoothing compared to common graph neural networks. A case study based upon a real world wind farm further demonstrates the capability of the proposed approach to predict farm scale power generation. Moreover, the proposed graph neural network framework is flexible and highly generic and as formulated here can be applied to any steady state computational fluid dynamics simulations on unstructured meshes.
description: 20 pages, 12 figures
Equivalent Relation between Normalized Spatial Entropy and Fractal Dimension
Creators: name: Chen, Yanguang
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Fractal dimension is defined on the base of entropy, including macro state entropy and information entropy. The generalized correlation dimension of multifractals is based on Renyi entropy. However, the mathematical transform from entropy to fractal dimension is not yet clear in both theory and practice. This paper is devoted to revealing the new equivalence relation between spatial entropy and fractal dimension using functional box-counting method. Based on varied regular fractals, the numerical relationship between spatial entropy and fractal dimension is examined. The results show that the ratio of actual entropy (Mq) to the maximum entropy (Mmax) equals the ratio of actual dimension (Dq) to the maximum dimension (Dmax). The spatial entropy and fractal dimension of complex spatial systems can be converted into one another by means of functional box-counting method. The theoretical inference is verified by observational data of urban form. A conclusion is that normalized spatial entropy is equal to normalized fractal dimension. Fractal dimensions proved to be the characteristic values of entropies. In empirical studies, if the linear size of spatial measurement is small enough, a normalized entropy value is infinitely approximate to the corresponding normalized fractal dimension value. Based on the theoretical result, new spatial measurements of urban space filling can be defined, and multifractal parameters can be generalized to describe both simple systems and complex systems.
description: 28 pages; 3 figures; 9 tables
Synthesis and Production of Lactic Acid (La) from False Banana/Bula Using Lactobacillus Plantarium
Creators: name: Abate, Yonas
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: The production of lactic acid from was optimized by central composite design, using bulla starch as carbon sources and MRS as yeast extract, meat extract, peptone and glucose source using Lactobacillus Plantarium. The fermentation were performed in 250 mL Erlenmeyer flasks containing 100 mL of MRS medium, maintained at 200 rpm, 40 g/l of starch (carbon source) , at temperature range from 30 °C to 40° C , pH 5 to 7 and time between 48 hours to 72 hours. The first two (agitation speed 200 rpm and carbon source 40 g/l) were set as constant. After data was analyzed by response surface method, it was revealed that Lactic acid production was significantly affected by temperature, time and pH of the samples. At central point of all factors: temperature 35 °C, time 60 hours and pH 6.25 maximal production of lactic acid was 17.09 g/L.
Generalized gravity from modified DFT
Creators: name: Sakatani, Yuho
name: Uehara, Shozo
name: Yoshida, Kentaroh
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recently, generalized equations of type IIB supergravity have been derived from the requirement of classical kappa-symmetry of type IIB superstring theory in the Green-Schwarz formulation. These equations are covariant under generalized T-duality transformations and hence one may expect a formulation similar to double field theory (DFT). In this paper, we consider a modification of the DFT equations of motion by relaxing a condition for the generalized covariant derivative with an extra generalized vector. In this modified double field theory (mDFT), we show that the flatness condition of the modified generalized Ricci tensor leads to the NS-NS part of the generalized equations of type IIB supergravity. In particular, the extra vector fields appearing in the generalized equations correspond to the extra generalized vector in mDFT. We also discuss duality symmetries and a modification of the string charge in mDFT.
description: 41 pages; v2: typos corrected, references added; v3: an addendum added in Sec.5; v4: typos corrected, clarifications added, to appear in JHEP