cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
GMRT observations of IC 711 -- The longest head-tail radio galaxy known
Creators: name: Srivastava, Shweta
name: Singal, Ashok K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present low-frequency, GMRT observations at 240, 610 and 1300 MHz of IC~711, a narrow angle tail (NAT) radio galaxy. The total angular extent of the radio emission, $\sim 22$ arcmin, corresponds to a projected linear size of $\sim 900$ kpc, making it the longest among the known head-tail radio galaxies. The objectives of the GMRT observations were to investigate the radio morphology, especially of the long tail structure, at low frequencies. The radio structure, especially initial $\sim 10$ arcmin of tail being a long straight feature, does not seem to be consistent with a simple circular motion around the cluster centre, as previously suggested in the literature. Two sharp bends after the straight section of the tail cast doubt on the prevailing idea in the literature that the long narrow tails represent trails left behind by the fast moving parent optical galaxy with respect to the cluster medium, as the optical galaxy could not have undergone such sharp bends in its path, under any conceivable gravitational influence of some individual galaxy or of the overall cluster gravitational potential. In fact the tail does not seem to have been influenced by the gravitational field of any of the cluster-member galaxies. The radio spectrum of the head, coinciding with the optical galaxy, is flat ($α\stackrel{
description: 15 pages. 12 figures, 3 tables, accepted in MNRAS
Diseño de un sistema de gestión ambiental para la cooperativa de ganaderos de Cartagena, Codegan ltda
Creators: name: De La Cruz Pallares, Maria Leonor
name: Marquez Mora, Angela Johanna
Publisher: name: Universidad de Cartagena
Year: 2001
Subjects: Gestión ambiental
Protección del medio ambiente
Impacto ambiental

description: Tesis (Administrador Industrial).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración Industrial, 2001
description: Día a día aumenta la preocupación de la población por el cuidado del medio ambiente, la protección y preservación especialmente de los recursos escasos y no renovables es vital sobretodo cuando lo que se busca es un verdadero desarrollo sostenible de la humanidad, Colombia no es ajena a esta situación, por esto con la constitución de 1991 y la ley 99 de 1993 se establece este como una estrategia fundamental para el progreso del país, evidenciándose en el programa de producción mas limpia, el cual busca prevenir y disminuir eficientemente los impactos y riesgos en los seres humanos y en le medio ambiente, garantizando protección al ambiente, crecimiento económico, bienestar social y competitividad empresarial. Conscientes de esta situación y acogiéndose a las tendencias empresariales no solo del país sino del mundo, planteamos para la cooperativa de ganaderos de Cartagena, Codegan Ltda., un sistema de gestión ambiental empresarial basado en la norma ISO 14000; los sistemas de gestión ambiental forman parte del sistema de administración total de cualquier empresa, incluye estructura organizacional, planificación de actividades, responsabilidades, practicas, procedimiento, procesos y recursos para desarrollar, implementar, revisar y mantener una política ambiental que busca principalmente cumplir la legislación ambiental vigente y pertinente a las actividades de la empresa, propiciar el mejoramiento continuo, prevenir la contaminación del ambiente, entre otros; a través del logro de objetivos y metas ambientales. El objetivo de este trabajo consiste en diseñar un sistema de gestión ambiental empresarial en Codegan Ltda. de forma que el manejo de los asuntos ambientales sea adecuado y pertinente con la normatividad exigida por las autoridades respectivas, buscando principalmente la mejora continua la productividad y el desarrollo sostenible para que la empresa logre sus metas económicas y sea competitiva a nivel nacional e internacional.
The Final Season Reimagined: 30 Tidal Disruption Events from the ZTF-I Survey
Creators: name: Hammerstein, Erica
name: van Velzen, Sjoert
name: Gezari, Suvi
name: Cenko, S. Bradley
name: Yao, Yuhan
name: Ward, Charlotte
name: Frederick, Sara
name: Villanueva, Natalia
name: Somalwar, Jean J.
name: Graham, Matthew J.
name: Kulkarni, Shrinivas R.
name: Stern, Daniel
name: Andreoni, Igor
name: Bellm, Eric C.
name: Dekany, Richard
name: Dhawan, Suhail
name: Drake, Andrew J.
name: Fremling, Christoffer
name: Gatkine, Pradip
name: Groom, Steven L.
name: Ho, Anna Y. Q.
name: Kasliwal, Mansi M.
name: Karambelkar, Viraj
name: Kool, Erik C.
name: Masci, Frank J.
name: Medford, Michael S.
name: Perley, Daniel A.
name: Purdum, Josiah
name: van Roestel, Jan
name: Sharma, Yashvi
name: Sollerman, Jesper
name: Taggart, Kirsty
name: Yan, Lin
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Tidal disruption events (TDEs) offer a unique way to study dormant black holes. While the number of observed TDEs has grown thanks to the emergence of wide-field surveys in the past few decades, questions regarding the nature of the observed optical, UV, and X-ray emission remain. We present a uniformly selected sample of 30 spectroscopically classified TDEs from the Zwicky Transient Facility Phase I survey operations with follow-up \textit{Swift} UV and X-ray observations. Through our investigation into correlations between light curve properties, we recover a shallow positive correlation between the peak bolometric luminosity and decay timescales. We introduce a new spectroscopic class of TDE, TDE-featureless, which are characterized by featureless optical spectra. The new TDE-featureless class shows larger peak bolometric luminosities, peak blackbody temperatures, and peak blackbody radii. We examine the differences between the X-ray bright and X-ray faint populations of TDEs in this sample, finding that X-ray bright TDEs show higher peak blackbody luminosities than the X-ray faint sub-sample. This sample of optically selected TDEs is the largest sample of TDEs from a single survey yet, and the systematic discovery, classification, and follow-up of this sample allows for robust characterization of TDE properties, an important stepping stone looking forward toward the Rubin era.
description: 44 pages, 22 figures, 9 tables, accepted to ApJ
Sub-leading flow modes in PbPb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV from HYDJET++ model
Creators: name: Cirkovic, P.
name: Devetak, D.
name: Dordevic, M.
name: Milosevic, J.
name: Stojanovic, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Recent LHC results on the appearance of sub-leading flow modes in PbPb collisions at 2.76~TeV, related to initial-state fluctuations, are analyzed and interpreted within the HYDJET++ model. Using the newly introduced Principal Component Analysis (PCA) method applied to two-particle azimuthal correlations extracted from the model calculations, the leading and the sub-leading flow modes are studied as a function of the transverse momentum ($p_{T}$) over a wide centrality range. The leading modes of the elliptic ($v^{(1)}_{2}$) and triangular ($v^{(1)}_{3}$) flow calculated within the HYDJET++ model reproduce rather well the $v_{2}\{2\}$ and $v_{3}\{2\}$ coefficients experimentally measured using the two-particle correlations. Within the $p_{T} \le $~3~GeV/c range where hydrodynamics dominates, the sub-leading flow effects are greatest at the highest $p_{T}$ of around 3~GeV/c. The sub-leading elliptic flow mode ($v^{(2)}_{2}$), which corresponds to $n = 2$ harmonic, has a small non-zero value and slowly increases from central to peripheral collisions, while the sub-leading triangular flow mode ($v^{(2)}_{3}$), which corresponds to $n = 3$ harmonic, is even smaller and does not depend on centrality. For $n = $~2, the relative magnitude of the effect measured with respect to the leading flow mode shows a shallow minimum for semi-central collisions and increases for very central and for peripheral collisions. For $n = $~3 case, there is no centrality dependence. The sub-leading flow mode results obtained from the HYDJET++ model are in a rather good agreement with the experimental measurements of the CMS Collaboration.
description: 10 pages, 7 figures
title: Mentoring aus Sicht von Ärzten in Weiterbildung Allgemeinmedizin
Creators: name: Broermann, M.
name: Gerlach, F.M.
name: Sennekamp, M.
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: Ärzte in Weiterbildung
subject: Mentoring
subject: Weiterbildungskolleg
subject: 610 Medical sciences; Medicine

description: Hintergrund: Aufgrund des absehbaren Hausärztemangels werden Möglichkeiten gesucht, die allgemeinmedizinische Weiterbildung strukturierter und attraktiver zu gestalten, um mehr Ärzte für die Weiterbildung zu gewinnen. In Hessen wird seit Frühjahr 2013 von zwei universitär[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 49. Kongress für Allgemeinmedizin und Familienmedizin
title: Schmerzmanagement für Patienten unter Buprenorphindauertherapie
Creators: name: Just, J.
name: Weckbecker, K.
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: Buprenorphindauertherapie
subject: Schmerzmanagement
subject: Substitution
subject: 610 Medical sciences; Medicine

description: Hintergrund: Buprenorphin wird in unterschiedlichen Dosierungen zur Therapie chronischer Schmerzen und zur Substitution opioidabhängiger Patienten verwendet. In beiden Patientengruppen ist die Inzidenz von Schmerzexazerbation / akuten Schmerzereignissen hoch [ref:1], [ref:2].[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 49. Kongress für Allgemeinmedizin und Familienmedizin
Análisis evolutivo de las estructuras y fuentes de financiación de las sociedades de capital de los sectores industrial y comercial de la ciudad de Sincelejo durante el periodo 2008 - 2013
Creators: name: Garcia Hernández, Lisseth Victoria
name: De La Peña Bowie, Juan Camilo
Publisher: name: Universidad de Cartagena
Year: 2016
Subjects: Economía financiera
Finanzas corporativas
Estructura de capital

description: Tesis (Especialista en Finanzas) -- Universidad de Cartagena. Facultad de Ciencias Económicas. Especialización en finanzas, 2016
description: La presente investigación pretende brindar una descripción de las diferentes estructuras de financiación de las empresas en la Ciudad de Sincelejo que sirvan como base para futuros análisis sobre los cambios y nuevas alternativas que dichas empresas deben considerar para mejorar su operación, crecer y generar valor que les permita ser sostenibles en el tiempo.
Factors Affecting Cost And Time Overrun In It Projects In Ethiopia: The Case Of Cybersoft Software Company, Addis Ababa, Ethiopia
Creators: name: Wubalem, Eden
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: The aim of this paper is to analyze the factors that affect cost and time overrun of software projects in Ethiopia, particularly taking the case of Cybersoft Software Company. The methodology that was used here is comparative case study. Two case projects were selected based on their cost and time significance. As a data collection method, questionnaires, interviews and company documents were used. The key informants were software developers who were engaged in the development of those projects and management bodies of the company. A total of 15 questionnaires are collected from the software developers and an interview was held with the CEO of the company. The finding from the research showed that the first project suffered cost overrun of 20% and the time showed an overrun by one year. In the case of the second project the cost showed an overrun by 35% and time overrun by one and half years. According to the respondents, unrealistic schedule, scope change, incomplete and shifting requirements and specifications, newness of technology, project complexity and unfeasible cost estimates are the major factors which highly affected both projects. Moreover, the results showed that software companies faced various challenges to stay in the industry. The company argued that the government doesn't give enough attention for the IT industry. Since most governmental organizations outsource their projects for foreign companies, it has been very difficult for the local software companies to stay in the market. According to the research, the cost and time overrun of the projects had a significant effect on the supplier, the client and the overall industry. The supplier faced financial loss and delay in returns in investment. From the clients' side, it creates lack of satisfaction and affects the performance of their business. It has also an adverse impact on the development of the ICT industry as a whole. In order to minimize the cost and time overrun in software projects, some recommendations are given by the researcher. Majorly careful planning is needed for a more accurate and realistic schedule, scope should be designed very carefully, ample time should be given to design requirements and specification and thorough discussion should be made between the supplier and the client and finally government support is very important for the development of the industry.
Numerical simulations of necklaces in SU(2) gauge-Higgs field theory
Creators: name: Hindmarsh, Mark
name: Rummukainen, Kari
name: Weir, David J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We perform the first numerical simulations of necklaces in a non-Abelian gauge theory. Necklaces are composite classical solutions which can be interpreted as monopoles trapped on strings, rather generic structures in a Grand Unified Theory. We generate necklaces from random initial conditions, modelling a phase transition in the early Universe, and study the evolution. For all cases, we find that the necklace system shows scaling behaviour similar to that of a network of ordinary cosmic strings. Furthermore, our simulations indicate that comoving distance between the monopoles or semipoles along the string asymptotes to a constant value at late times. This means that while the monopole-to-string energy density ratio decreases as the inverse of the scale factor, a horizon-size length of string has a large number of monopoles, significantly affecting the dynamics of string loops. We argue that gravitational wave bounds from millisecond pulsar timing on the string tension in the Nambu-Goto scenario are greatly relaxed.
description: 15 pages, 8 figures; v2: Figs. 2 (bottom) and 4 (top) corrected, some discussion added, results unchanged, accepted by PRD
Local disorder, topological ground state degeneracy and entanglement entropy, and discrete anyons
Creators: name: Bachmann, Sven
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this comprehensive study of Kitaev's abelian models defined on a graph embedded on a closed orientable surface, we provide complete proofs of the topological ground state degeneracy, the absence of local order parameters, compute the entanglement entropy exactly and characterise the elementary anyonic excitations. The homology and cohomolgy groups of the cell complex play a central role and allow for a rigorous understanding of the relations between the above characterisations of topological order.
Family of asymptotic solutions to the two-dimensional kinetic equation with a nonlocal cubic nonlinearity
Creators: name: Shapovalov, Alexander V.
name: Kulagin, Anton E.
name: Siniukov, Sergei A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 45K05, 81Q20, 82B40, 82D10

description: We apply the original semiclassical approach to the kinetic ionization equation with the nonlocal cubic nonlinearity in order to construct the family of its asymptotic solutions. The approach proposed relies on an auxiliary dynamical system of moments of the desired solution to the kinetic equation and the associated linear partial differential equation. The family of asymptotic solutions to the kinetic equation is constructed using the symmetry operators acting on functions concentrated in a neighborhood of a point determined by the dynamical system. Based on these solutions, we introduce the nonlinear superposition principle for the nonlinear kinetic equation. Our formalism based on the Maslov germ method is applied to the Cauchy problem for the specific two-dimensional kinetic equation. The evolution of the ion distribution in the kinetically enhanced metal vapor active medium is obtained as the nonlinear superposition using the numerical-analytical calculations.
description: 29 pages, 3 figures, 1 table, minor corrections
Linear Density Perturbations in Multifield Coupled Quintessence
Creators: name: Leithes, Alexander
name: Malik, Karim A.
name: Mulryne, David J.
name: Nunes, Nelson J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the behaviour of linear perturbations in multifield coupled quintessence models. Using gauge invariant linear cosmological perturbation theory we provide the full set of governing equations for this class of models, and solve the system numerically. We apply the numerical code to generate growth functions for various examples, and compare these both to the standard $Λ$CDM model and to current and future observational bounds. Finally, we examine the applicability of the "small scale approximation", often used to calculate growth functions in quintessence models, in light of upcoming experiments such as SKA and Euclid. We find the deviation of the full equation results for large k modes from the approximation exceeds the experimental uncertainty for these future surveys. The numerical code, PYESSENCE, written in Python will be publicly available.
description: 19 pages, 9 figures, version accepted for publication by PRD, refs. added, extra Consistency Test section added
Synergistic killing mechanisms of novel polymyxin B combination therapies against Pseudomonas aeruginosa
Creators: name: HUSSEIN, MAYTHAM HASHIM HUSSEIN
Publisher: name: Monash University
Year: 2022
Subjects: Clinical pharmacy and pharmacy practice

description: The global health system is facing a big threat due to dissemination of highly resistant bacteria namely Superbugs . This is accompanied with a dry up of antibiotics industry pipeline. Polymyxins are only treatment option available for treatment of these Superbugs; however, these notorious pathogens find ways to resist last line therapy polymyxins. Combining of polymyxins with nonantibiotics compounds has emerged as cost-effective way to save the efficacy of last line polymyxins and reduce resistance. We identified effective novel polymyxin combinations to fight superbugs by using systems pharmacology approach. These novel combinations preserve the clinical efficacy of last resort polymyxins and prevent polymyxin resistance.
The Synthetic Hilbert Space of Laser-Driven Free-Electrons
Creators: name: Braiman, Guy
name: Reinhardt, Ori
name: Mechel, Chen
name: Levi, Omer
name: Kaminer, Ido
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recent advances in laser interactions with coherent free electrons have enabled to shape the electron's quantum state. Each electron becomes a superposition of energy levels on an infinite quantized ladder, shown to contain up to thousands of energy levels. We propose to utilize the quantum nature of such laser-driven free electrons as a "synthetic Hilbert space" in which we construct and control qudits (quantum digits). The question that motivates our work is what qudit states can be accessed using electron-laser interactions, and whether it is possible to implement any arbitrary quantum gate. We find how to encode and manipulate free-electron qudit states, focusing on dimensions which are powers of 2, where the qudit represents multiple qubits implemented on the same single electron - algebraically separated, but physically joined. As an example, we prove the possibility to fully control a 4-dimenisonal qudit, and reveal the steps required for full control over any arbitrary dimension. Our work enriches the range of applications of free electrons in microscopy and spectroscopy, offering a new platform for continuous-variable quantum information.
Motivic random variables and representation stability I: Configuration spaces
Creators: name: Howe, Sean
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: Geometric Topology (math.GT)
subject: Number Theory (math.NT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 14G10, 18F30, 55R80

description: We prove a motivic stabilization result for the cohomology of the local systems on configuration spaces of varieties over $\mathbb{C}$ attached to character polynomials. Our approach interprets the stabilization as a probabilistic phenomenon based on the asymptotic independence of certain *motivic random variables*, and gives explicit universal formulas for the limits in terms of the exponents of a motivic Euler product for the Kapranov zeta function. The result can be thought of as a weak but explicit version of representation stability for the cohomology of ordered configuration spaces. In the sequel we find similar stability results in spaces of smooth hypersurface sections, providing new examples to be investigated through the lens of representation stability for symmetric, symplectic and orthogonal groups.
description: 25 pages, minor updates from v1. Close to final journal version
title: Inanspruchnahme von diagnostischen Leistungen bei seltenen Erkrankungen in der hausärztlichen Versorgung
Creators: name: Natan, M.
name: Gulich, M.
name: Liffers, P.
name: Zeitler, H.-P.
name: Hausen, A.
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: Inanspruchnahme
subject: Seltene Erkrankungen
subject: Versorgungsforschung
subject: 610 Medical sciences; Medicine

description: Hintergrund: In Deutschland leiden circa vier Millionen Menschen an einer seltenen Erkrankung (vgl. [ref:3]). Medizinische Versorgung seltener Erkrankungen stellt eine Herausforderung für alle Akteure des Gesundheitswesens dar (vgl. [ref:1]). Diagnoseverzögerungen, geringe[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 49. Kongress für Allgemeinmedizin und Familienmedizin
"Matrimonio y divorcio"
Creators: name: Cogollo Zapateiro, Mirtha Margarita
Publisher: name: Universidad de Cartagena
Year: 1972
Subjects: Matrimonio - Aspectos jurídicos - Colombia

description: Tesis (Abogado) -- Universidad de Cartagena. Facultad de Derecho y Ciencias Políticas. Programa de Derecho, 1972
description: Abordar todo lo referente al divorcio, estimando que nuestra legislación debe dar un paso de avance, y tratando de vincular el divorcio, y como quiera que se han experimentado, viendo las consecuencias que estas puedan acarrear tanto para los conyugues, hijos y la sociedad en general.
title: Brain infarction, dementia, and related vessel disorders: Impact of infarct size, distribution, and its association with vessel and heart disorders
Creators: name: Hecht, Moritz
name: Krämer, Lara
name: Von Arnim, Christine
name: Attems, Johannes
name: Ludolph, Albert
name: Thal, Dietmar
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Objectives: Vascular dementia (VD) can be caused by multiple infarct dementia or strategic infarct dementia. Vascular lesions have been discussed to be associated with Alzheimer's disease (AD). Here, we want to determine the impact of infarct size anddistribution on the degree of dementia, and [for full text, please go to the a.m. URL]
description: 60th Annual Meeting of the German Society for Neuropathology and Neuroanatomy (DGNN)
Probing autoionizing states of molecular oxygen with XUV transient absorption: Electronic symmetry dependent lineshapes and laser induced modification
Creators: name: Liao, Chen-Ting
name: Li, Xuan
name: Haxton, Daniel J.
name: Rescigno, Thomas N.
name: Lucchese, Robert R.
name: McCurdy, C. William
name: Sandhu, Arvinder
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The dynamics of autoionizing Rydberg states of oxygen are studied using attosecond transient absorption technique, where extreme ultraviolet (XUV) initiates molecular polarization and near infrared (NIR) pulse perturbs its evolution. Transient absorption spectra show positive optical density (OD) change in the case of $nsσ_g$ and $ndπ_g$ autoionizing states of oxygen and negative OD change for $ndσ_g$ states. Multiconfiguration time-dependent Hartree-Fock (MCTDHF) calculation are used to simulate the transient absorption spectra and their results agree with experimental observations. The time evolution of superexcited states is probed in electronically and vibrationally resolved fashion and we observe the dependence of decay lifetimes on effective quantum number of the Rydberg series. We model the effect of near-infrared (NIR) perturbation on molecular polarization and find that the laser induced phase shift model agrees with the experimental and MCTDHF results, while the laser induced attenuation model does not. We relate the electron state symmetry dependent sign of the OD change to the Fano parameters of the static absorption lineshapes.
description: 15 pages, 8 figures
Picosecond synchronization system for quantum networks
Creators: name: Valivarthi, Raju
name: Narváez, Lautaro
name: Davis, Samantha I.
name: Lauk, Nikolai
name: Peña, Cristián
name: Xie, Si
name: Allmaras, Jason P.
name: Beyer, Andrew D.
name: Korzh, Boris
name: Mueller, Andrew
name: Rominsky, Mandy
name: Shaw, Matthew
name: Wollman, Emma E.
name: Spentzouris, Panagiotis
name: Oblak, Daniel
name: Sinclair, Neil
name: Spiropulu, Maria
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The operation of long-distance quantum networks requires photons to be synchronized and must account for length variations of quantum channels. We demonstrate a 200 MHz clock-rate fiber optic-based quantum network using off-the-shelf components combined with custom-made electronics and telecommunication C-band photons. The network is backed by a scalable and fully automated synchronization system with ps-scale timing resolution. Synchronization of the photons is achieved by distributing O-band-wavelength laser pulses between network nodes. Specifically, we distribute photon pairs between three nodes, and measure a reduction of coincidence-to-accidental ratio from 77 to only 42 when the synchronization system is enabled, which permits high-fidelity qubit transmission. Our demonstration sheds light on the role of noise in quantum communication and represents a key step in realizing deployed co-existing classical-quantum networks.
description: 7 pages, 7 figures
Urban Treetop Detection and Tree-Height Estimation from Unmanned-Aerial-Vehicle Images
Creators: name: Wu, Hui
name: Zhuang, Minghao
name: Chen, Yuanchi
name: Meng, Chen
name: Wu, Caiyan
name: Ouyang, Linke
name: Liu, Yuhan
name: Shu, Yi
name: Tao, Yuzhong
name: Qiu, Tong
name: Li, Junxiang
Publisher: name: Humboldt-Universität zu Berlin
Year: 2023
Subjects: subject: unmanned aerial vehicle (UAV)
subject: local-maximum algorithm
subject: urban forest
subject: treetop detection
subject: subtropical evergreen–deciduous broadleaved mixed forest
subject: 550 Geowissenschaften

description: Individual tree detection for urban forests in subtropical environments remains a great challenge due to the various types of forest structures, high canopy closures, and the mixture of evergreen and deciduous broadleaved trees. Existing treetop detection methods based on the canopy-height model (CHM) from UAV images cannot resolve commission errors in heterogeneous urban forests with multiple trunks or strong lateral branches. In this study, we improved the traditional local-maximum (LM) algorithm using a dual Gaussian filter, variable window size, and local normalized correlation coefficient (NCC). Specifically, we adapted a crown model of maximum/minimum tree-crown radii and an angle strategy to detect treetops. We then removed and merged the pending tree vertices. Our results showed that our improved LM algorithm had an average user accuracy (UA) of 87.3% (SD± 4.6), an average producer accuracy (PA) of 82.8% (SD± 4.1), and an overall accuracy of 93.3% (SD± 3.9) for sample plots with canopy closures less than 0.5. As for the sample plots with canopy closures from 0.5 to 1, the accuracies were 78.6% (SD± 31.5), 73.8% (SD± 10.3), and 68.1% (SD± 12.7), respectively. The tree-height estimation accuracy reached more than 0.96, with an average RMSE of 0.61 m. Our results show that the UAV-image-derived CHM can be used to accurately detect individual trees in mixed forests in subtropical cities like Shanghai, China, to provide vital tree-structure parameters for precise and sustainable forest management.
Colloquium: Hydrodynamics and holography of charge density wave phases
Creators: name: Baggioli, Matteo
name: Goutéraux, Blaise
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this Colloquium, we review recent progress in the effective description of strongly-correlated phases of matter with spontaneously broken translations, such as charge density waves or Wigner crystals. In real materials, disorder is inevitable and pins the Goldstones of broken translations. We describe how pinning can be incorporated in the effective field theory at low energies, without making any assumption on the presence of boost symmetry. We review the essential role played by gauge-gravity duality models in establishing these effective field theories with only approximate symmetries. We close with a discussion on the relevance of these models for the phenomenology of dc and ac transport in strongly-correlated strange and bad metals, such as high temperature superconductors.
description: final version accepted in Review of Modern Physics
title: DNA methylation array-based molecular profiling for brain tumor classification
Creators: name: Capper, David
name: Jones, David T. W.
name: Sill, Martin
name: Hovestadt, Volker
name: Schrimpf, Daniel
name: Reuss, David
name: Sahm, Felix
name: Kölsche, Christian
name: Kratz, Annekathrin
name: Mittelbronn, Michel
name: Schittenhelm, Jens
name: Olar, Adriana
name: Buslei, Rolf
name: Hartmann, Christian
name: Kohlhof, Patricia
name: Hasselblatt, Martin
name: Schick, Matthias
name: Bewerunge-Hudler, Melanie
name: Korshunov, Andrey
name: Aldape, Kenneth
name: Von Deimling, Andreas
name: Pfister, Stefan M.
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Question/methods: Molecular technologies which can complement standard pathology testing have the potential to greatly enhance diagnostic precision. Analysis of DNA methylation, acting as a 'fingerprint' of cellular origin, is one such promising technology for tumor classification. We[for full text, please go to the a.m. URL]
description: 60th Annual Meeting of the German Society for Neuropathology and Neuroanatomy (DGNN)
An Assessment On Causes Of Delay In Road Construction Projects: The Case Of Ethiopian Road Authority
Creators: name: Tolera, Eyasu
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: Road construction in Ethiopia, like many other countries in the world, is an important sector due to its enormous contribution to the country's economic growth and social development in terms of employment opportunities and its contributions to GDP. However, due to various reasons, many road construction projects are prone to delay. These delay can only be avoided by identifying the factors causes delay. This study was aimed to find out the main causes of delay in Ethiopia road construction projects in the case of Ethiopian Road Authority. Quantitative data was collected from clients, consultants and contractors using questionnaires and then the data obtained were analyzed using the Relative Importance index (RII). The survey analysis results obtained identified ten major causes of delays. The RII ranking results depicted that planned work schedule, difficulties in financing the construction project as delay factors were the most influential factor by contractor were considered most important factor causing delay in road construction projects followed by of contractors' materials shortage on site and poor project manager skills. In addition, effects of delays associated to road construction project were identified
Diseño de un programa de control de calidad basado en el uso de herramientas estadísticas aplicado al proceso productivo de Coopmamonal
Creators: name: Gómez Arcila, Jairo
name: Consuegra De La Ossa, Humberto José
Publisher: name: Universidad de Cartagena
Year: 2004
Subjects: Control de calidad

description: Tesis ( Administrador Industrial ) -- Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración Industrial, 2003
description: Para las empresas que ven en la calidad una fuente de competitividad y de permanencia en el mercado en la actualidad, la aplicación del control estadístico puede resultar fundamental para el logro de esas ambiciones. La calidad está hoy en día relacionada con el cumplimiento de normas de carácter internacional y con la generación de una cultura que se encuentre presente en todos los niveles de las organizaciones. Sin embargo, no puede olvidarse que las empresas generan los productos y/o servicios que sus clientes les demandan en sus niveles operativos, por lo que éstos últimos se convierten en agentes críticos al momento de concebir estrategias encaminadas a generar calidad. El control estadístico de la calidad, aunque de aplicación en varias esferas organizacionales, tiene su máximo receptor en los departamentos de producción y operaciones, ya que éstos contemplan, además de las consideraciones económico-financieras, aquellas que tienen que ver con el mejoramiento de los sistemas de trabajo. El sector de las confecciones, es el objeto de estudio de este trabajo, centrando la atención en la empresa COOPMAMONAL. Ésta, como representante del sector en la ciudad de Cartagena, estará sometida a los análisis que para implementar un programa de control de calidad basado en el uso de herramientas estadísticas haya que realizar. Igualmente, gozará de la presentación de alternativas ajustadas a sus características específicas, que también serán insumo para otras empresas del sector con expectativas similares. El presente trabajo toma en cuenta los aportes históricos hechos alrededor del control estadístico de calidad por diferentes personajes, así como consideraciones de tipo empírico para lograr una coherencia de la teoría con la práctica.
Motivic random variables and representation stability II: Hypersurface sections
Creators: name: Howe, Sean
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: Geometric Topology (math.GT)
subject: Number Theory (math.NT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We prove geometric and cohomological stabilization results for the universal smooth degree $d$ hypersurface section of a fixed smooth projective variety as $d$ goes to infinity. We show that relative configuration spaces of the universal smooth hypersurface section stabilize in the completed Grothendieck ring of varieties, and deduce from this the stabilization of the Hodge Euler characteristic of natural families of local systems constructed from the vanishing cohomology. We prove explicit formulas for the stable values using a probabilistic interpretation, along with the natural analogs in point counting over finite fields. We explain how these results provide new geometric examples of a weak version of representation stability for symmetric, symplectic, and orthogonal groups. This interpretation of representation stability was studied in the prequel for configuration spaces.
description: 37 pages, close to final journal version. Major update from v1: the main conjecture of v1 is the main theorem of v2
Impartial achievement games for generating generalized dihedral groups
Creators: name: Benesh, Bret J.
name: Ernst, Dana C.
name: Sieben, Nandor
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 91A46, 20D30

description: We study an impartial game introduced by Anderson and Harary. This game is played by two players who alternately choose previously-unselected elements of a finite group. The first player who builds a generating set from the jointly-selected elements wins. We determine the nim-numbers of this game for generalized dihedral groups, which are of the form $\operatorname{Dih}(A)= \mathbb{Z}_2 \ltimes A$ for a finite abelian group $A$.
description: 11 pages, 7 figures. Revised in response to comments from referees
title: Epigenetic analysis of induced pluripotent stem cells established from Parkinson’s disease patients
Creators: name: Schulze, Markus
name: Winner, Beate
name: Winkler, Jürgen
name: Riemenschneider, Markus
name: IPS Bavarian Research Network On Induced Pluripotent Stem Cells
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Introduction: Parkinson’s disease (PD) is the second most common neurodegenerative disorder, characterized by the loss of dopaminergic neurons from the substantia nigra. Recently, epigenetic changes, e.g. aberrant miRNA expression patterns and hypomethylation of α-synuclein, have been linked[for full text, please go to the a.m. URL]
description: 60th Annual Meeting of the German Society for Neuropathology and Neuroanatomy (DGNN)
De la autosupresión de la moral a la ética de Nietzsche
Creators: name: Alvear Sarabia, Adolfo Enrique
Publisher: name: Universidad de Cartagena
Year: 2006
Subjects: Ética

description: Tesis (Filósofo) -- Universidad de Cartagena. Facultad de Ciencias Humanas. Programa de Filosofía, 2006
description: Este trabajo que versa sobre la posibilidad de la ética de Nietzsche, no trata de hacer una exposición sistemática del pensamiento moral de Kant, sino de analizar a este último desde una visión e interpretación nietzscheana. En este contexto, Kant nos sirve para resaltar la originalidad de la propuesta de Nietzsche, el contrate con la filosofía moral kantiana nos permite afirmar la ética Nietzsche sólo se mantiene en la primera parte de este trabajo; en donde se intenta realizar la “Autosupresión de la moral”, que luego de paso para que hablemos de la propuesta del filósofo del martillo. Así pues. En la primera parte de este ensayo, presento la tesis de Kant en la proporción necesaria para comprender la crítica de Nietzsche.
New polymeric nanoparticles to interrupt the ROS- and RNS- derived misregulation of cells
Creators: name: VAN NAM DAO
Publisher: name: Monash University
Year: 2021
Subjects: Pharmaceutical sciences
Medical biotechnology not elsewhere classified
Polymers and plastics
Nanomedicine

description: The aim of this thesis is to use advanced polymer design to develop new biomaterials that can intercept biochemical signalling pathways. The developed materials react either directly or indirectly with reactive oxygen species and/or reactive nitrogen species, and confer downstream effects in the biological milieu. Four main categories of materials were developed: trisulfide-bearing polymers for releasing hydrogen sulfide and persulfides, polymer carriers for intracellular delivery of N-acetyl L-cysteine, star polymers for conjugating a small molecule antioxidant (TEMPO) and nitric oxide-scavenging polymers. The macromolecules were well-characterised and exhibited the desired biological activity. Such materials have potential application in pharmaceutics and oncology.
Transcendence of the Hodge-Tate filtration
Creators: name: Howe, Sean
Publisher: name: arXiv
Year: 2016
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14L05, 14G22

description: For $C$ a complete algebraically closed extension of $\mathbb{Q}_p$, we show that a one-dimensional $p$-divisible group $G/ \mathcal{O}_C$ can be defined over a complete discretely valued subfield $L \subset C$ with Hodge-Tate period ratios contained in $L$ if and only if $G$ has CM, if and only if the period ratios generate an extension of $\mathbb{Q}_p$ of degree equal to the height of the connected part of $G$. This is a $p$-adic analog of a classical transcendence result of Schneider which states that for $τ$ in the complex upper half plane, $τ$ and $j(τ)$ are simultaneously algebraic over $\mathbb{Q}$ if and only if $τ$ is contained in a quadratic extension of $\mathbb{Q}$. We also briefly discuss a conjectural generalization to shtukas with one paw.
description: 8 pages, minor update from v1. Close to final journal version
title: Intravital characterization of microglia in Alzheimer’s Disease
Creators: name: Drost, Natalia H.
name: Prokop, Stefan
name: Miller, Kelly
name: Rinnenthal, Jan-Leo
name: Heppner, Frank L.
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Alzheimer’s disease (AD) is a primary neurodegenerative disorder characterized by three major pathological hallmarks including neuronal loss, neurofibrillary tangles and accumulation of β-amyloid (Aβ) plaques. While microglia, the resident immune cells of the central nervous system[for full text, please go to the a.m. URL]
description: 60th Annual Meeting of the German Society for Neuropathology and Neuroanatomy (DGNN)
The survival of gas clouds in the Circumgalactic Medium of Milky Way-like galaxies
Creators: name: Armillotta, L.
name: Fraternali, F.
name: Werk, J. K.
name: Prochaska, J. X.
name: Marinacci, F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Observational evidence shows that low-redshift galaxies are surrounded by extended haloes of multiphase gas, the so-called 'circumgalactic medium' (CGM). To study the survival of relatively cool gas (T < 10^5 K) in the CGM, we performed a set of hydrodynamical simulations of cold (T = 10^4 K) neutral gas clouds travelling through a hot (T = 2x10^6 K) and low-density (n = 10^-4 cm^-3) coronal medium, typical of Milky Way-like galaxies at large galactocentric distances (~ 50-150 kpc). We explored the effects of different initial values of relative velocity and radius of the clouds. Our simulations were performed on a two-dimensional grid with constant mesh size (2 pc) and they include radiative cooling, photoionization heating and thermal conduction. We found that for large clouds (radii larger than 250 pc) the cool gas survives for very long time (larger than 250 Myr): despite that they are partially destroyed and fragmented into smaller cloudlets during their trajectory, the total mass of cool gas decreases at very low rates. We found that thermal conduction plays a significant role: its effect is to hinder formation of hydrodynamical instabilities at the cloud-corona interface, keeping the cloud compact and therefore more difficult to destroy. The distribution of column densities extracted from our simulations are compatible with those observed for low-temperature ions (e.g. SiII and SiIII) and for high-temperature ions (OVI) once we take into account that OVI covers much more extended regions than the cool gas and, therefore, it is more likely to be detected along a generic line of sight.
description: 12 pages, 10 figures. Accepted for publication in MNRAS
Diseño preliminar de una dependencia de aprovechamiento de residuos sólidos orgánicos del relleno sanitario de Cartagena para la generación energía eléctrica producida por la combustión de biogás y la obtención de compost por descomposición de materia orgánica
Creators: name: Marquez Mora, Alan Jhon
name: Reyes Salgado, Iván Rodrigo
Publisher: name: Universidad de Cartagena
Year: 2007
Subjects: Residuo solido
Compostaje
Reciclaje

description: Tesis (Administrador Industrial).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración Industrial, 2007
description: El trabajo de grado contempla la descripción de la situación actual de la gestión de los residuos sólidos Urbanos en Cartagena, partiendo de un análisis de la gestión de los residuos sólidos a nivel mundial y en América latina. Seguido se tiene un análisis de las cantidades generadas de residuos sólidos a nivel nacional y especialmente a nivel local, posteriormente analizando los datos y cifras obtenidas se evaluarán y escogerán los procesos y tecnologías más adecuadas para una correcta disposición de los residuos sólidos, reciclando aquella parte susceptible de ser recuperada para su posterior reincorporación al ciclo productivo, generando biogás a partir de la fracción orgánica de los residuos sólidos, produciendo compost orgánico a partir de la parte orgánica tratada, y valorizando energéticamente la fracción residual de los residuos mediante la combustión de CDR (Combustible Derivado de Residuos) y la cogeneración eléctrica mediante un sistema turbogenerador en ciclo combinado, generando energía eléctrica la cual será destinada para el autoabastecimiento de la planta, y el excedente enviado a la red eléctrica nacional. La planta generará mínimas emisiones contaminantes hacia el medio ambiente, a través del tratamiento de los gases de postcombustión y un correcto tratamiento de las aguas utilizadas dentro de los procesos físico-químicos de la planta, contribuyendo a un desarrollo sostenible protegiendo el medio ambiente.
Khovanov width and dealternation number of positive braid links
Creators: name: Baader, Sebastian
name: Feller, Peter
name: Lewark, Lukas
name: Zentner, Raphael
Publisher: name: arXiv
Year: 2016
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25, 57M27

description: We give asymptotically sharp upper bounds for the Khovanov width and the dealternation number of positive braid links, in terms of their crossing number. The same braid-theoretic technique, combined with Ozsváth, Stipsicz, and Szabó's Upsilon invariant, allows us to determine the exact cobordism distance between torus knots with braid index two and six.
description: 11 pages, 6 figures, comments welcome! V2: minor changes and corrections. This version corresponds to the published article