cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Good governance for prison health in the 21st century. A policy brief on the organization of prison health
Creators: name: (:Unkn) Unknown
Publisher: name: Universität Tübingen
Year: 2013
Subjects: subject: Strafvollzug , Justizvollzugsanstalt , Gesundheit , Gesundheitspolitik , Menschenrecht
subject: 360

description: Against the background of concern about ministerial responsibility for the health of prisoners in Europe, the members of the WHO European Network on Prison and Health asked the WHO Regional Office for Europe to provide a document on the governance of prison health. A special Expert Group for the Stewardship of Prison Health and members of the WHO European Network on Prison and Health have contributed to this document. The Expert Group concluded, with regard to institutional arrangements for prison health, that: (i) managing and coordinating all relevant agencies and resources contributing to the health and well-being of prisoners is a whole-of-government responsibility, and (ii) health ministries should provide and be accountable for health care services in prisons and advocate healthy prison conditions. The Expert Group considers that such governance of prison health is in accordance with and supportive of the new European policy for health, Health 2020, and will lead to better health and well-being of prisoners as part of better public health.
Campodea (Campodea) cyrnea subsp. cyrnea cyrnea Conde 1946
Creators: name: Sendra, Alberto
name: Reboleira, Ana Sofia P. S.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Diplura
Campodeidae
Campodea
Campodea cyrnea
Campodea (campodea) cyrnea cyrnea condé, 1946

description: Campodea (Campodea) cyrnea cyrnea Condé, 1946
Campodea (Campodea) cyrnea cyrnea Condé, 1946b: 4, fig. 2a–h.
Diagnosis (Condé 1946 b, 1948c)
Cave-adapted species; body length 5.0– 6.5 mm; short, smooth clothing setae; antennae with 35–43 antennomeres; cupuliform organ with eight or more complex olfactory chemoreceptors; 1+1 ma macrosetae on metanotum; middle-sized notal macrosetae almost completely covered with short barbs; thin pine cone marginal setae; 1+1 la, 1+1 lp macrosetae on VI–VII urotergites, 3+3 lp on VIII urotergite and 5+5 lp on IX abdominal segment; male without glandular g 1 -setae.
description: Published as part of Sendra, Alberto & Reboleira, Ana Sofia P. S., 2020, Euro-Mediterranean fauna of Campodeinae (Campodeidae, Diplura), pp. 1-130 in European Journal of Taxonomy 728 on page 32, DOI: 10.5852/ejt.2020.728.1181, http://zenodo.org/record/4316883
Calamus lamprolepis W. J. Baker 2015, comb. nov.
Creators: name: Baker, William J.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Arecales
Arecaceae
Calamus
Calamus lamprolepis

description: Calamus lamprolepis (Becc.) W.J.Baker, comb. nov.
 Daemonorops lamprolepis Becc., Rec. Bot. Surv. India 2: 223 (1902).
description: Published as part of Baker, William J., 2015, A revised delimitation of the rattan genus Calamus (Arecaceae), pp. 139-152 in Phytotaxa 197 (2) on page 145, DOI: 10.11646/phytotaxa.197.2.7, http://zenodo.org/record/13640784
Improving End-to-End Speech Translation by Imitation-Based Knowledge Distillation with Synthetic Transcripts
Creators: name: Hubert, Rebekka
name: Sokolov, Artem
name: Riezler, Stefan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: End-to-end automatic speech translation (AST) relies on data that combines audio inputs with text translation outputs. Previous work used existing large parallel corpora of transcriptions and translations in a knowledge distillation (KD) setup to distill a neural machine translation (NMT) into an AST student model. While KD allows using larger pretrained models, the reliance of previous KD approaches on manual audio transcripts in the data pipeline restricts the applicability of this framework to AST. We present an imitation learning approach where a teacher NMT system corrects the errors of an AST student without relying on manual transcripts. We show that the NMT teacher can recover from errors in automatic transcriptions and is able to correct erroneous translations of the AST student, leading to improvements of about 4 BLEU points over the standard AST end-to-end baseline on the English-German CoVoST-2 and MuST-C datasets, respectively. Code and data are publicly available.\footnote{\url{https://github.com/HubReb/imitkd_ast/releases/tag/v1.1}}
description: IWSLT 2023, corrected version
Intervención del trabajador social en los planteles de educación media en la ciudad de Cartagena
Creators: name: Baíz Tous, Magola
name: Castillo García, Xiomara
Publisher: name: Universidad de Cartagena
Year: 1988
Subjects: Trabajo social de grupo

description: Tesis (Trabajador(a) Social) -- Universidad de Cartagena. Facultad de Ciencias Sociales y Educación. Programa de Trabajo Social, 1988
description: El presente estudio tiene por objeto determinar del Trabajador Social en los planteles de educación media en la ciudad de Cartagena.
Putting the Fair in Welfare: Charting Shifts in Public Attitudes Towards Social Welfare Since the Emergence of Covid-19
Creators: name: Catz Johnson, Zoe
Publisher: name: University of Chicago
Year: 2022
Subjects: subject: Welfare
subject: Public Opinion
subject: Covid-19

description: My thesis examines whether the Covid-19 pandemic influenced public attitudes towards welfare in the United Kingdom and the United States. In order to make my analysis a cross-national one, I choose to analyze two countries rather than just one. I focus on the UK and US because they are two nations with a similar history, culture, and international power, yet with welfare states that are vastly different in size and scope. I source the public opinion survey data from the National Centre for Research (NatCen) and the National Opinion Research Center (NORC), gathering and cleaning data over a period of months beginning in April 2022 and ending in July 2022. In my thesis, I combine the data from eight key survey questions most relating to public attitude towards welfare. I concentrated on data from 2014 to 2021, to have input on public opinion preceding, at the height of, and in the aftermath of the Covid-19 pandemic. I find that while the majority of public opinion trends examined do not undergo huge fluctuations since the Covid-19 pandemic, American respondents show steadily increasing support for welfare and somewhat support for income redistribution policies in a long-term trend since 2014, while British support for welfare increases from 2014 to 2019, while remaining largely stable during the pandemic.
Hyperscaling violation at the Ising-nematic quantum critical point in two dimensional metals
Creators: name: Eberlein, Andreas
name: Mandal, Ipsita
name: Sachdev, Subir
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Understanding optical conductivity data in the optimally doped cuprates in the framework of quantum criticality requires a strongly-coupled quantum critical metal which violates hyperscaling. In the simplest scaling framework, hyperscaling violation can be characterized by a single non-zero exponent $θ$, so that in a spatially isotropic state in $d$ spatial dimensions, the specific heat scales with temperature as $T^{(d-θ)/z}$, and the optical conductivity scales with frequency as $ω^{(d-θ-2)/z}$ for $ω\gg T$, where $z$ is the dynamic critical exponent. We study the Ising-nematic critical point, using the controlled dimensional regularization method proposed by Dalidovich and Lee (Phys. Rev. B {\bf 88}, 245106 (2013)). We find that hyperscaling is violated, with $θ=1$ in $d=2$. We expect that similar results apply to Fermi surfaces coupled to gauge fields in $d=2$.
description: 28 pages
Estudio fiscal y presupuestal del municipio de Magangue
Creators: name: Atencio Aguilera, Guido
name: Ramirez Acosta, Efrain
Publisher: name: Universidad de Cartagena
Year: 1989
Subjects: Presupuesto municipal - Magangue - Bolívar
Impuesto - Magangue - Bolívar

description: Tesis (Economista) -- Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Economía. 1989.
description: El presente trabajo tiene por objeto estudiar todos los aspectos que nos permiten un conocimiento del actual sistema fiscal y presupuestal, con el fin de sentar pautas para implementar planes y programas de desarrollo económico, social y de obras publicas en el municipio de Maganguè, que permitan mejorar las condiciones de vida de sus habitantes, mediante una participación justa de beneficios y obligaciones con lo que se puede alcanzar el progreso máximo del municipio.
Calamus leptopus Griff., Calcutta J. Nat. Hist.
Creators: name: Baker, William J.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Arecales
Arecaceae
Calamus
Calamus leptopus

description: Calamus leptopus Griff., Calcutta J. Nat. Hist. 5: 73 (1845).
 Daemonorops leptopus (Griff.) Mart., Hist. Nat. Palm. 3: 329 (1853), Palmijuncus leptopus (Griff.) Kuntze, Revis. Gen. Pl. 2: 733 (1891).
 Daemonorops congesta Ridl., Mat. Fl. Malay. Penins. 2: 179 (1907).
description: Published as part of Baker, William J., 2015, A revised delimitation of the rattan genus Calamus (Arecaceae), pp. 139-152 in Phytotaxa 197 (2) on page 145, DOI: 10.11646/phytotaxa.197.2.7, http://zenodo.org/record/13640784
Mono-W Dark Matter Signals at the LHC: Simplified Model Analysis
Creators: name: Bell, Nicole F.
name: Cai, Yi
name: Leane, Rebecca K.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study mono-W signals of dark matter (DM) production at the LHC, in the context of gauge invariant renormalizable models. We analyze two simplified models, one involving an s-channel Z' mediator and the other a t-channel colored scalar mediator, and consider examples in which the DM-quark couplings are either isospin conserving or isospin violating after electroweak symmetry breaking. While previous work on mono-W signals have focused on isospin violating EFTs, obtaining very strong limits, we find that isospin violating effects are small once such physics is embedded into a gauge invariant simplified model. We thus find that the 8 TeV mono-W results are much less constraining than those arising from mono-jet searches. Considering both the leptonic (mono-lepton) and hadronic (mono fat jet) decays of the W, we determine the 14 TeV LHC reach of the mono-W searches with 3000 fb$^{-1}$ of data. While a mono-W signal would provide an important complement to a mono-jet discovery channel, existing constraints on these models imply it will be a challenging signal to observe at the 14 TeV LHC.
description: 19 pages, 8 figures
Efectos económicos y sociales de la privatización de Colpuertos en la ciudad de Cartagena en el periodo de 1990 - 1993
Creators: name: Campo Luna, Hernan
name: Castellar Romero, Efren
Publisher: name: Universidad de Cartagena
Year: 1993
Subjects: Puertos
Privatización

description: Tesis (Economista).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Economía, 1993.
description: El presente estudio tiene por objeto determinar los efectos económicos y sociales que se presentaran con la privatización de colpuertos en los estamentos vinculados al terminal de Cartagena.
A Repeating Fast Radio Burst
Creators: name: Spitler, L. G.
name: Scholz, P.
name: Hessels, J. W. T.
name: Bogdanov, S.
name: Brazier, A.
name: Camilo, F.
name: Chatterjee, S.
name: Cordes, J. M.
name: Crawford, F.
name: Deneva, J.
name: Ferdman, R. D.
name: Freire, P. C. C.
name: Kaspi, V. M.
name: Lazarus, P.
name: Lynch, R.
name: Madsen, E. C.
name: McLaughlin, M. A.
name: Patel, C.
name: Ransom, S. M.
name: Seymour, A.
name: Stairs, I. H.
name: Stappers, B. W.
name: van Leeuwen, J.
name: Zhu, W. W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Fast Radio Bursts are millisecond-duration astronomical radio pulses of unknown physical origin that appear to come from extragalactic distances. Previous follow-up observations have failed to find additional bursts at the same dispersion measures (i.e. integrated column density of free electrons between source and telescope) and sky position as the original detections. The apparent non-repeating nature of the fast radio bursts has led several authors to hypothesise that they originate in cataclysmic astrophysical events. Here we report the detection of ten additional bursts from the direction of FRB121102, using the 305-m Arecibo telescope. These new bursts have dispersion measures and sky positions consistent with the original burst. This unambiguously identifies FRB121102 as repeating and demonstrates that its source survives the energetic events that cause the bursts. Additionally, the bursts from FRB121102 show a wide range of spectral shapes that appear to be predominantly intrinsic to the source and which vary on timescales of minutes or shorter. While there may be multiple physical origins for the population of fast radio bursts, the repeat bursts with high dispersion measure and variable spectra specifically seen from FRB121102 support models that propose an origin in a young, highly magnetised, extragalactic neutron star.
description: 22 pages, 2 figures and 3 tables. Published online by Nature on 2 Mar 2016
Predicting online extremism, content adopters, and interaction reciprocity
Creators: name: Ferrara, Emilio
name: Wang, Wen-Qiang
name: Varol, Onur
name: Flammini, Alessandro
name: Galstyan, Aram
Publisher: name: arXiv
Year: 2016
Subjects: subject: Social and Information Networks (cs.SI)
subject: Machine Learning (cs.LG)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We present a machine learning framework that leverages a mixture of metadata, network, and temporal features to detect extremist users, and predict content adopters and interaction reciprocity in social media. We exploit a unique dataset containing millions of tweets generated by more than 25 thousand users who have been manually identified, reported, and suspended by Twitter due to their involvement with extremist campaigns. We also leverage millions of tweets generated by a random sample of 25 thousand regular users who were exposed to, or consumed, extremist content. We carry out three forecasting tasks, (i) to detect extremist users, (ii) to estimate whether regular users will adopt extremist content, and finally (iii) to predict whether users will reciprocate contacts initiated by extremists. All forecasting tasks are set up in two scenarios: a post hoc (time independent) prediction task on aggregated data, and a simulated real-time prediction task. The performance of our framework is extremely promising, yielding in the different forecasting scenarios up to 93% AUC for extremist user detection, up to 80% AUC for content adoption prediction, and finally up to 72% AUC for interaction reciprocity forecasting. We conclude by providing a thorough feature analysis that helps determine which are the emerging signals that provide predictive power in different scenarios.
description: 9 pages, 3 figures, 8 tables
Calamus lewisianus Griff., Calcutta J. Nat. Hist.
Creators: name: Baker, William J.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Arecales
Arecaceae
Calamus
Calamus lewisianus

description: Calamus lewisianus Griff., Calcutta J. Nat. Hist. 5: 87 (1845).
 Daemonorops lewisiana (Griff.) Mart., Hist. Nat. Palm. 3: 327 (1853), Palmijuncus lewisianus (Griff.) Kuntze, Revis. Gen. Pl. 2: 733 (1891).
 Daemonorops pseudosepal Becc. in J.D.Hooker, Fl. Brit. India 6: 465 (1893).
 Daemonorops tabacina Becc. in J.D.Hooker, Fl. Brit. India 6: 466 (1893).
 Daemonorops bakauensis Becc., Ann. Roy. Bot. Gard. (Calcutta) 12(1): 220 (1911).
 Daemonorops curtisii Furtado, Gard. Bull. Straits Settlem. 9: 164 (1937).
description: Published as part of Baker, William J., 2015, A revised delimitation of the rattan genus Calamus (Arecaceae), pp. 139-152 in Phytotaxa 197 (2) on page 145, DOI: 10.11646/phytotaxa.197.2.7, http://zenodo.org/record/13640784
The XXL Survey VIII: MUSE characterisation of intracluster light in a z$\sim$0.53 cluster of galaxies
Creators: name: Adami, C.
name: Pompei, E.
name: Sadibekova, T.
name: Clerc, N.
name: Iovino, A.
name: McGee, S. L.
name: Guennou, L.
name: Birkinshaw, M.
name: Horellou, C.
name: Maurogordato, S.
name: Pacaud, F.
name: Pierre, M.
name: Poggianti, B.
name: Willis, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Within a cluster, gravitational effects can lead to the removal of stars from their parent galaxies. Gas hydrodynamical effects can additionally strip gas and dust from galaxies. The properties of the ICL can therefore help constrain the physical processes at work in clusters by serving as a fossil record of the interaction history. The present study is designed to characterise this ICL in a ~10^14 M_odot and z~0.53 cluster of galaxies from imaging and spectroscopic points of view. By applying a wavelet-based method to CFHT Megacam and WIRCAM images, we detect significant quantities of diffuse light. These sources were then spectroscopically characterised with MUSE. MUSE data were also used to compute redshifts of 24 cluster galaxies and search for cluster substructures. An atypically large amount of ICL has been detected in this cluster. Part of the detected diffuse light has a very weak optical stellar component and apparently consists mainly of gas emission, while other diffuse light sources are clearly dominated by old stars. Furthermore, emission lines were detected in several places of diffuse light. Our spectral analysis shows that this emission likely originates from low-excitation parameter gas. The stellar contribution to the ICL is about 2.3x10^9 yrs old even though the ICL is not currently forming a large number of stars. On the other hand, the contribution of the gas emission to the ICL in the optical is much greater than the stellar contribution in some regions, but the gas density is likely too low to form stars. These observations favour ram pressure stripping, turbulent viscous stripping, or supernovae winds as the origin of the large amount of intracluster light. Since the cluster appears not to be in a major merging phase, we conclude that ram pressure stripping is the most plausible process that generates the observed ICL sources.
description: Accepted in A&A, english enhanced, figure location different than in the A&A version due to different style files, shortened abstract
Possible Population III Remnants at Redshift 3.5
Creators: name: Crighton, Neil H. M.
name: O'Meara, John M.
name: Murphy, Michael T.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The first stars, known as Population III (PopIII), produced the first heavy elements, thereby enriching their surrounding pristine gas. Previous detections of metals in intergalactic gas clouds, however, find a heavy element enrichment larger than $1/1000$ times that of the solar environment, higher than expected for PopIII remnants. In this letter we report the discovery of a Lyman limit system (LLS) at $z=3.53$ with the lowest metallicity seen in gas with discernable metals, $10^{-3.41\pm0.26}$ times the solar value, at a level expected for PopIII remnants. We make the first relative abundance measurement in such low metallicity gas: the carbon-to-silicon ratio is $10^{-0.26\pm0.17}$ times the solar value. This is consistent with models of gas enrichment by a PopIII star formation event early in the Universe, but also consistent with later, Population II enrichment. The metals in all three components comprising the LLS, which has a velocity width of 400 km s$^{-1}$, are offset in velocity by $\sim+6$ km s$^{-1}$ from the bulk of the hydrogen, suggesting the LLS was enriched by a single event. Relative abundance measurements in this near-pristine regime open a new avenue for testing models of early gas enrichment and metal mixing.
description: To appear in MNRAS letters. Comments welcome
Die digitale Allmende. Zur Frage des nachhaltigen Umgangs mit Kultur im digitalen Lebensraum
Creators: name: Haux, Dario Henri
Publisher: name: Zenodo
Year: 2021

description: Die Adaption des Urheberrechts an das digitale Zeitalter stellt eine zentrale Herausforderung für das Immaterialgüterrecht dar. Diskus­sionen um eine «Krise des Urheberrechts» machen deutlich, dass es an einer sachgemässen juristischen Erfassung neuer digitaler Kul­turpraktiken weiterhin fehlt. Die richtungsweisenden Urteile zu «Me­tall auf Metall» zugrunde legend, zeigt die Dissertation von Dario Henri Haux am Beispiel des digitalen Musiksamplings zeitgemässe Ansätze auf. Angeregt durch Konzepte wie die sogenannte Kultur­wertmark oder Überlegungen zu einem Grundrecht auf Zugang zum Internet wird die Bedeutung der Materialität im Urheberrecht herausgearbeitet und ein historisch rückgebundenes Modell der di­gitalen Allmende präsentiert. Der Autor hinterfragt das Verhältnis Materialität - lmmaterialität, vollzieht die Beziehung zwischen ur­heberrechtlichen Werken sowie den daran Beteiligten nach und ver­weist auf die Bedeutung der Nachhaltigkeit digitaler Prozesse. Auf­grund dieser vielseitigen Perspektiven bietet die vorliegende Arbeit sowohl für Rechtspraktikerinnen und Rechtswissenschaftlerinnen wie auch für Studierende und Interessierte kritische Einsichten in die Rechtsgrundlagen eines im Wandel begriffenen Urheberrechts.
description: + LUZERNER DISSERTATION 2020 +erscheint in der Reihe "Recht der neuen Technologien (RnT)"
Diseño, construcción y operación de una torre de empacado a escala piloto para estudiar la eficiencia en la remoción de gases volátiles presentes en el aire
Creators: name: Acevedo Castro, Darwing Steven
name: Patron Hernandez, Nicolas Alberto
name: Quiñones Bolaños, Edgar (Director)
Publisher: name: Universidad de Cartagena
Year: 2008
Subjects: Edificios industriales - Diseño
Torres de empacado - Construcción
Gases volátiles - Manejo

description: Tesis (Ingeniero Civil).--Universidad de Cartagena. Facultad de Ciencias E Ingeniería. Programa de Ingeniería Civil, 2008.
description: El presente estudio tiene por objeto implementar en nuestro medio una técnica de absorción de gases aplicada en países desarrollados conocida como Torre de Empacado para adelantar estudios sobre el control de emisiones contaminantes a la atmósfera.
The most-luminous heavily-obscured quasars have a high merger fraction: morphological study of WISE-selected hot dust-obscured galaxies
Creators: name: Fan, Lulu
name: Han, Yunkun
name: Fang, Guanwen
name: Gao, Ying
name: Zhang, Dandan
name: Jiang, Xiaoming
name: Wu, Qiaoqian
name: Yang, Jun
name: Li, Zhao
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Previous studies have shown that WISE-selected hyperluminous, hot dust-obscured galaxies (Hot DOGs) are powered by highly dust-obscured, possibly Compton-thick AGNs. High obscuration provides us a good chance to study the host morphology of the most luminous AGNs directly. We analyze the host morphology of 18 Hot DOGs at $z\sim3$ using Hubble Space Telescope/WFC3 imaging. We find that Hot DOGs have a high merger fraction ($62\pm 14 \%$). By fitting the surface brightness profiles, we find that the distribution of Sérsic indices in our Hot DOG sample peaks around 2, which suggests that most of Hot DOGs have transforming morphologies. We also derive the AGN bolometric luminosity ($\sim10^{14}L_\odot$) of our Hot DOG sample by using IR SEDs decomposition. The derived merger fraction and AGN bolometric luminosity relation is well consistent with the variability-based model prediction (Hickox et al. 2014). Both the high merger fraction in IR-luminous AGN sample and relatively low merger fraction in UV/optical-selected, unobscured AGN sample can be expected in the merger-driven evolutionary model. Finally, we conclude that Hot DOGs are merger-driven and may represent a transit phase during the evolution of massive galaxies, transforming from the dusty starburst dominated phase to the unobscured QSO phase.
description: 5 pages, 3 figures, Accepted for publication in the Astrophysical Journal Letters
Using symmetry-adapted optimized sum-of-products basis functions to calculate vibrational spectra
Creators: name: Leclerc, Arnaud
name: Carrington, Tucker
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Vibrational spectra can be computed without storing full-dimensional vectors by using low-rank sum-of-products (SOP) basis functions. We introduce symmetry constraints in the SOP basis functions to make it possible to separately calculate states in different symmetry subgroups. This is done using a power method to compute eigenvalues and an alternating least squares method to optimize basis functions. Owing to the fact that the power method favours the convergence of the lowest states, one must be careful not to exclude basis functions of some symmetries. Exploiting symmetry facilitates making assignments and improves the accuracy. The method is applied to the acetonitrile molecule.
Emergent space-time loops
Creators: name: Bergelt, Gerald
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 519999
subject: Other physical sciences not elsewhere classified

description: Can the emergence of a Black Hole (BH), that is observed from outside, be equivalent to a "Big Bang", that is observed from inside? The current incompatibilities between General Relativity and Standard Model could be seen in a degree of freedom of the underlying metric, i.e. space-time. In order to derive solutions for BH, that satisfies observational constraints at small and large scales simultaneously, we suggest applying the convolutional term x’=1/x for each coordinate of the 4D space-time metric inside the BH. A mechanism is presented that allows the interior of supermassive black holes (SMBH) to be the cosmological driving force of Dark Energy that was recently claimed by a group around Duncan Farrah. Non-locality can be explained from a completely new point of view. Our intention is to contribute to the big picture, in order to bring GR and QM closer together. Comments on this pre-print are appreciated very much, especially on the mathematical formalism.
Valoración de la empresa técnica metalmecánica del Caribe y Cia. Ltda. Una empresa del sector metalmecánico de la ciudad de Cartagena
Creators: name: Polo Nuñez, Aldrin De Jesús
name: Daniels Sierra, Linda Donna
Publisher: name: Universidad de Cartagena
Year: 2015
Subjects: Análisis económico
Análisis financiero

description: Tesis (Especialista en Finanzas) -- Universidad de Cartagena. Facultad de Ciencias Económicas. Especialización en finanzas, 2015
description: El objetivo de este trabajo de investigación busca analizar y valorar financieramente la empresa Técnica Metalmecánica del Caribe y Cía. Ltda. Mediante la aplicación del método de Flujo de Caja Libre Descontado.
Campodea (Campodea) cyrnea subsp. alethae Conde 1948
Creators: name: Sendra, Alberto
name: Reboleira, Ana Sofia P. S.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Diplura
Campodeidae
Campodea
Campodea cyrnea
Campodea (campodea) cyrnea alethae condé, 1948

description: Campodea (Campodea) cyrnea alethae Condé, 1948
Campodea (Campodea) cyrnea alethae Condé, 1948c: 63, fig. b.
Differential diagnosis from the f. typ. (Condé 1948c)
Notal macrosetae longer and thinner than f. typ.
Habitat and distribution
Cave-adapted species located in several caves in Cap Corse, Corsica Island (Condé 1946 b, 1948c).
description: Published as part of Sendra, Alberto & Reboleira, Ana Sofia P. S., 2020, Euro-Mediterranean fauna of Campodeinae (Campodeidae, Diplura), pp. 1-130 in European Journal of Taxonomy 728 on page 32, DOI: 10.5852/ejt.2020.728.1181, http://zenodo.org/record/4316883
Tamanho da Amostra na área médica
Creators: name: Sanudo, Adriana
Publisher: name: Zenodo
Year: 2023
Subjects: Bioestatistica
Tamanho da Amostra
Pesquisa em Saúde

description: Aula apresentada no evento realizado pela Biblioteca do Campus São Paulo - 17/08 às 14:00 hs sobre Tamanho da Amostra na área da Saúde - Profa. Dra. Adriana Sanudo
Packed Compact Tries: A Fast and Efficient Data Structure for Online String Processing
Creators: name: Takagi, Takuya
name: Inenaga, Shunsuke
name: Sadakane, Kunihiko
name: Arimura, Hiroki
Publisher: name: arXiv
Year: 2016
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: In this paper, we present a new data structure called the packed compact trie (packed c-trie) which stores a set $S$ of $k$ strings of total length $n$ in $n \logσ+ O(k \log n)$ bits of space and supports fast pattern matching queries and updates, where $σ$ is the size of an alphabet. Assume that $α= \log_σn$ letters are packed in a single machine word on the standard word RAM model, and let $f(k,n)$ denote the query and update times of the dynamic predecessor/successor data structure of our choice which stores $k$ integers from universe $[1,n]$ in $O(k \log n)$ bits of space. Then, given a string of length $m$, our packed c-tries support pattern matching queries and insert/delete operations in $O(\frac{m}α f(k,n))$ worst-case time and in $O(\frac{m}α + f(k,n))$ expected time. Our experiments show that our packed c-tries are faster than the standard compact tries (a.k.a. Patricia trees) on real data sets. As an application of our packed c-trie, we show that the sparse suffix tree for a string of length $n$ over prefix codes with $k$ sampled positions, such as evenly-spaced and word delimited sparse suffix trees, can be constructed online in $O((\frac{n}α + k) f(k,n))$ worst-case time and $O(\frac{n}α + k f(k,n))$ expected time with $n \log σ+ O(k \log n)$ bits of space. When $k = O(\frac{n}α)$, by using the state-of-the-art dynamic predecessor/successor data structures, we obtain sub-linear time construction algorithms using only $O(\frac{n}α)$ bits of space in both cases. We also discuss an application of our packed c-tries to online LZD factorization.
description: 10 pages, 2 figures
Characterization and reduction of flow separation in jet pumps for laminar oscillatory flows
Creators: name: Timmer, Michael A. G.
name: Oosterhuis, Joris P.
name: Bühler, Simon
name: Wilcox, Douglas
name: van der Meer, Theo H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: A computational fluid dynamics model is used to predict the oscillatory flow through tapered cylindrical tube sections (jet pumps). The asymmetric shape of jet pumps results in a time-averaged pressure drop that can be used to suppress Gedeon streaming in closed-loop thermoacoustic devices. However, previous work has shown that flow separation in the diverging flow direction counteracts the time-averaged pressure drop. In this work, the characteristics of flow separation in jet pumps are identified and coupled with the observed jet pump performance. Furthermore, it is shown that the onset of flow separation can be shifted to larger displacement amplitudes by designs that have a smoother transition between the small opening and the tapered surface of the jet pump. These design alterations also reduce the duration of separated flow, resulting in more effective and robust jet pumps. To make the proposed jet pump designs more compact without reducing their performance, the minimum big opening radius that can be implemented before the local minor losses have an influence on the jet pump performance is investigated. To validate the numerical results, they are compared with experimental results for one of the proposed jet pump designs.
description: The following article has been accepted by the Journal of the Acoustical Society of America. After it is published, it will be found at: http://scitation.aip.org/JASA
[C II] and [N II] from dense ionized regions in the Galaxy
Creators: name: Langer, W. D.
name: Goldsmith, P. F.
name: Pineda, J. L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The interstellar medium (ISM) consists of highly ionized and neutral atomic, as well as molecular, components. Knowledge of their distribution is important for tracing the structure and lifecycle of the ISM. Here we determine the properties of the highly ionized and neutral weakly ionized gas in the Galaxy traced by the fine-structure lines of ionized nitrogen, [N II], and ionized carbon, [C II]. To analyze the ionized ISM we utilize [C II] 158 micron and [N II] 205 micron lines taken with the high spectral resolution Heterodyne Instrument in the Far-Infrared (HIFI) on the Herschel Space Observatory along ten lines of sight towards the inner Galaxy. [N II] emission can be used to estimate the contribution of the highly ionized gas to the [C II] emission and separate the highly ionized and weakly ionized neutral gas. We find that [N II] has strong emission in distinct spectral features along all lines of sight associated with strong [C II] emission. The [N II] arises from moderate density extended HII regions or ionized boundary layers of clouds. Comparison of the [N II] and [C II] spectra in 31 separate kinematic features shows that many of the [C II] spectra are affected by absorption from low excitation gas associated with molecular clouds, sometimes strongly so. The apparent fraction of the [C II] associated with the [N II] gas is unrealistically large in many cases, most likely due to the reduction of [C II] by absorption. In a few cases the foreground absorption can be modeled to determine the true source intensity. In these sources we find that the foreground absorbing gas layer has C$^+$ column densities of order 10$^{18}$ cm$^{-2}$. [C II] emission arising from strong sources of [N II] emission is frequently absorbed by low excitation foreground gas complicating the interpretation of the properties of the ionized and neutral gas components that give rise to [C II] emission.
description: 11 pages, 6 figures
Molecular Gas Velocity Dispersions in the Andromeda Galaxy
Creators: name: Caldu-Primo, Anahi
name: Schruba, Andreas
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In order to characterize the distribution of molecular gas in spiral galaxies, we study the line profiles of CO:1-0 emission in Andromeda, our nearest massive spiral galaxy. We compare observations performed with the IRAM 30m single-dish telescope and with the CARMA interferometer at a common resolution of 23 arcsec ~ 85pc x 350pc and 2.5 km/s. When fitting a single Gaussian component to individual spectra, the line profile of the single dish data is a factor 1.5+-0.4 larger than the interferometric data one. This ratio in line widths is surprisingly similar to the ratios previously observed in two other nearby spirals, NGC 4736 and NGC 5055, but measured at ~0.5-1 kpc spatial scale. In order to study the origin of the different line widths, we stack the individual spectra in 5 bins of increasing peak intensity and fit two Gaussian components to the stacked spectra. We find a unique narrow component of FWHM = 7.5+-0.4 km/s visible in both the single dish and the interferometric data. In addition, a broad component with FWHM = 14.4+-1.5 km/s is present in the single-dish data, but cannot be identified in the interferometric data. We interpret this additional broad line width component detected by the single dish as a low brightness molecular gas component that is extended on spatial scales >0.5 kpc, and thus filtered out by the interferometer. We search for evidence of line broadening by stellar feedback across a range of star formation rates but find no such evidence on ~100 pc spatial scale when characterizing the line profile by a single Gaussian component.
description: 18 pages, 10 figures, accepted to AJ
Incidencia de la privatización en el mercado laboral de Cartagena sector servicios
Creators: name: Escudero Benavides, Tobias J
name: Zuñiga Liñan, Hermelinda
Publisher: name: Universidad de Cartagena
Year: 1994
Subjects: Mercado laboral - Cartagena
Mercado laboral - Cartagena (Bolívar) - Privatización

description: Tesis (Administrador de Empresas).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración de Empresas, 1994
description: El presente estudio tiene por objeto determinar y analizar la repercusión de la privatización de las empresas estatales en el sector servicios de la ciudad de Cartagena.
The Complete Ultraviolet Spectrum of the Archetypal "Wind-Dominated" Quasar Mrk~231: Absorption and Emission from a High-Speed Dusty Nuclear Outflow
Creators: name: Veilleux, S.
name: Melendez, M.
name: Tripp, T. M.
name: Hamann, F.
name: Rupke, D. S. N.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: New near- and far-ultraviolet (NUV and FUV) HST spectra of Mrk 231, the nearest quasar known, are combined with ground-based optical spectra to study the remarkable dichotomy between the FUV and NUV-optical spectral regions in this object. The FUV emission-line features are faint, broad, and highly blueshifted (up to ~7000 km/s), with no significant accompanying absorption. In contrast, the profiles of the NUV absorption features resemble those of the optical Na I D, He I, and Ca II H and K lines, exhibiting broad blue-shifted troughs that overlap in velocity space with the FUV emission-line features and indicate a dusty, high-density and patchy broad absorption line (BAL) screen covering ~90% of the observed continuum source at a distance less than ~2 - 20 pc. The FUV continuum emission does not show the presence of any obvious stellar features and is remarkably flat compared with the steeply declining NUV continuum. The NUV (FUV) features and continuum emission have not varied significantly over the past ~22 (3) years and are unresolved on scales ~40 (170) pc. These results favor an AGN origin for the NUV - FUV line and continuum emission. The observed FUV line emission is produced in the outflowing BAL cloud system, while the Balmer lines arise primarily from the standard broad line region seen through the dusty BAL screen. Our data are inconsistent with the recently proposed binary black hole model. We argue instead that Mrk~231 is the nearest example of weak-lined "wind-dominated" quasars with high Eddington ratios and geometrically thick ("slim") accretion disks; these quasars are likely more common in the early universe.
description: 10 pages, 8 figures, 1 table, Accepted for publication in the Astrophysical Journal
Attractive Coulomb interaction of 2D Rydberg excitons
Creators: name: Shahnazaryan, V.
name: Shelykh, I. A.
name: Kyriienko, O.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We analyze theoretically the Coulomb scattering processes of highly excited excitons in the direct bandgap semiconductor quantum wells. We find that contrary to the interaction of ground state excitons the electron and hole exchange interaction between excited excitons has an attractive character both for $s$- and $p$-type 2D excitons. Moreover, we show that similarly to the three-dimensional (3D) highly excited excitons, the direct interaction of 2D Rydberg excitons exhibits van der Waals type long-range interaction. The results predict the linear growth of the absolute value of exchange interaction strength with an exciton principal quantum number, and point the way towards enhancement of optical nonlinearity in 2D excitonic systems.
Galactic Spiral Arms by Swing Amplification
Creators: name: Michikoshi, Shugo
name: Kokubo, Eiichiro
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Based on the swing amplification model of Julian and Toomre (1966), we investigate the formation and structure of stellar spirals in disk galaxies. We calculate the pitch angle, wavelengths, and amplification factor of the most amplified mode. We also obtain the fitting formulae of these quantities as a function of the epicycle frequency and Toomre's $Q$. As the epicycle frequency increases, the pitch angle and radial wavelength increases, while the azimuthal wavelength decreases. The pitch angle and radial wavelength increases with $Q$, while the azimuthal wavelength weakly depends on $Q$. The amplification factor decreases with $Q$ rapidly. In order to confirm the swing amplification model, we perform local $N$-body simulations. The wavelengths and pitch angle by the swing amplification model are in good agreement with those by $N$-body simulations. The dependence of the amplification factor on the epicycle frequency in $N$-body simulations is generally consistent with that in the swing amplification model. Using these results, we estimate the number of spiral arms as a function of the shear rate. The number of spiral arms increases with the shear rate if the disk to halo mass ratio is fixed.
description: 23 pages, 10 figures, accepted for publication in ApJ
Les défis du Mix Électrique Marocain pour Faire Face à l'Urgence Climatique
Creators: name: Ayat-Allah Bouramdane
Publisher: name: Zenodo
Year: 2022
Subjects: Mix Électrique, Maroc, Urgence Climatique

description: Les défis du Mix Électrique Marocain pour Faire Face à l’Urgence Climatique
An Empirical Study of Irregular AG Block Turbo Codes over Fading Channels
Creators: name: Alzubi, Omar A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This study will present the design, construction and implementation of Algebraic Geometric Irregular Block Turbo Codes (AGIBTCs). Furthermore, we will evaluate its performance over fast fading channels using different modulation schemes (BPSK, QPSK, 16QAM and 64QAM). The idea behind the design of AGIBTC is to overcome the high system complexity of Algebraic Geometric Block Turbo Codes (AGBTCs) while maintaining a high Bit-Error Rate (BER) performance. This design is inspired by the idea of unequal protection of information symbols which is the core of IBTCs. Our experiments conducted over the worst case of fading channels which is the fast fading channels; and this is done in order to show the magnitude of gain in BER or the reduction in system complexity that can be achieved by this design. Our experiments shows that despite a very slight negative gain over BPSK and QPSK modulation schemes the system complexity is significantly reduced. However, when applying higher modulation schemes a gain in both BER and system complexity are achieved.
description: 7 pages, 12 figures, Journal paper
Caracterización de la asociatividad en las Pymes del Sector Turístico de Cartagena
Creators: name: Ordosgoitia Ahumada, Elizabeth Cristina
name: Ochoa Baños, Luís Fernando
Publisher: name: Universidad de Cartagena
Year: 2006
Subjects: Pequeña y mediana empresa - Cartagena;
Turismo - Industria
Investigaciones - Mercados

description: Tesis (Administrador Industrial) -- Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración Industrial. 2006
description: Los procesos de competitividad de las empresas nos llevan a un mundo sin fronteras que origina márgenes y posibilidades de crecimiento, de interacción entre pueblos y ciudades sin excluir el predominio de valores y patrones socioculturales, de ahí que el sector deberá modernizarse aportando, entre otras cosas, factores de desarrollo social que generan la competitividad del entorno en el cual se establezcan.
Three-dimensional Boltzmann-Hydro code for core-collapse in massive stars II. The Implementation of moving-mesh for neutron star kicks
Creators: name: Nagakura, Hiroki
name: Iwakami, Wakana
name: Furusawa, Shun
name: Sumiyoshi, Kohsuke
name: Yamada, Shoichi
name: Matsufuru, Hideo
name: Imakura, Akira
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a newly developed moving-mesh technique for the multi-dimensional Boltzmann-Hydro code for the simulation of core-collapse supernovae (CCSNe). What makes this technique different from others is the fact that it treats not only hydrodynamics but also neutrino transfer in the language of the 3+1 formalism of general relativity (GR), making use of the shift vector to specify the time evolution of the coordinate system. This means that the transport part of our code is essentially general relativistic although in this paper it is applied only to the moving curvilinear coordinates in the flat Minknowski spacetime, since the gravity part is still Newtonian. The numerical aspect of the implementation is also described in detail. Employing the axisymmetric two-dimensional version of the code, we conduct two test computations: oscillations and runaways of proto-neutron star (PNS). We show that our new method works fine, tracking the motions of PNS correctly. We believe that this is a major advancement toward the realistic simulation of CCSNe.
description: Accepted for publication in ApJS
BeSt Teacher: Ein Testinstrument zur Erfassung des Lehrerprofessionswissens im Bereich der Beschreibenden Statistik
Creators: name: Schumacher, Stefanie
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2015
Subjects: subject: 510

description: Das Projekt BeSt Teacher soll Einblick in das Professionswissen von Mathematiklehrkräften der Sekundarstufe I im Bereich der Beschreibenden Statistik (BeSt) geben. Der dafür entwickelte Online-Fragebogen umfasst Items zu Fachwissen, fachdidaktischem Wissen sowie Kontextvariablen zur Lehrerselbstwirksamkeit und zu Emotionen. Erste Zwischenergebnisse zeigen eine Bandbreite im Fachwissen sowie in der Komplexität der Antworten zu fachdidaktischen Inhalten.
Diseño del sistema de control interno de la empresa Siett Santa Marta
Creators: name: Atehortúa Álvarez, Carlos Rafael
name: Rada Lara, Jorge Ramón
Publisher: name: Universidad de Cartagena
Year: 2008
Subjects: Control de actividades; Auditoría; Control interno

description: Tesis (Contador Público).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Contaduría Pública, 2008
description: El presente estudio tiene por objeto proponer lineamientos para optimizar el sistema de control interno de la empresa SIETT Santa Marta