cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Campodea (Campodea) blandinae subsp. blandinae blandinae 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 blandinae
Campodea (campodea) blandinae blandinae condé, 1948

description: Campodea (Campodea) blandinae blandinae Condé, 1948
Campodea (Campodea) cyrnea blandinae Condé, 1948c: 64, figs c, e, g.
Diagnosis (Condé 1948c)
Cave-adapted species; body length 3.3–8.0 mm; short, thick with one to three small, thick apical barbs; antennae with 37–46antennomeres; cupuliform organ with eight thick complex olfactory chemoreceptors; 1+1 ma macrosetae on metanotum; thick, short well-barbed notal macrosetae; thin pine cone marginal setae; 1+1 la macrosetae on V urotergite, 1+1 la, 1+1 lp on VI–VII urotergites, 3+3 lp on VIII urotergite and 5+5 lp on IX abdominal segment; cerci 2½ times as long as body covered with middle-sized barbed macrosetae arranged in several whorls and forming one (on basal articles) to several (on medial and distal articles) whorls of smooth short 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 29, DOI: 10.5852/ejt.2020.728.1181, http://zenodo.org/record/4316883
Untersuchungen zur Wirksamkeit einer zweijährigen Lehrer(innen)fortbildung
Creators: name: Plunger, Cornelia
name: Schneider, Edith
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2015
Subjects: subject: 510

description: Das Lehrer(innen)fortbildungsprogramm „Pädagogik und Fachdidaktik für Lehrer(innen) – Mathematik (PFL-M)“ hat eine mehr als 30-jährige Tradition. Kenntnisse über dessen Akzeptanz und Wirksamkeit sind dabei – nicht zuletzt als Denkanstöße für die Weiterentwicklung des Programms – von besonderem Interesse. Im Beitrag werden Struktur und Aufbau von PFL-M, die eingesetzten Evaluationsinstrumente sowie einige ausgewählte Untersuchungsergebnisse vorgestellt.
Characterisation of atomically-thin transition metal dichalcogenides
Creators: name: Palczyński, Paweł Jan
Publisher: name: Imperial College London
Year: 2019

description: Transition metal dichalcogenides (TMDC) are a class of materials that has become increasingly popular in the recent years in the wake of discovery of graphene and its surprising properties. Despite being known for decades and being used in their bulk form as a sold lubricant or catalysts their mono and few layer form remained largely unexplored. Indeed when TMDCs are only one or few layers thick their unique optical and electronic properties emerge. In particular group VI TMDCs such as MoS2 or WS2, as their numbers of layers decreases, turn from an indirect to direct bandgap semiconductor with possible applications in visible range optoelectronic and electronic devices. Moreover unique quantum effects such as quantum spin Hall effect, strong spin orbit interactions or topological insulators can be observed in these thin films. One of the major hurdles standing in the path of further development of those materials is its synthesis. The commonly used methods successfully optimise one of the many desired parameters and therefore new techniques must be developed to provide an improvement across all aspects of the material quality. In order to properly asses those new growths methods metrological studies must equally contribute to the capabilities of rapid assessment of large area flakes and films. To that effect the commonly used Raman and PL are heavily employed throughout in mapping the as grown as well as transferred flakes on multiple different substrates. In a similar fashion the x-ray spectroscopy is utilised to gain insight into the samples chemistry, layer thickness and crystal structure. This triple role of XPS allowed for initial studies of 1T’ WSe2 which combined with Raman and PL spectroscopy with supplement of other characterisation techniques provided valuable introspective into its structure and properties. The overarching goal of the thesis is to develop synthesis techniques for growth of TMDCs primarily via CVD as well as colloidal synthesis in order to reliably produce thin layers with controllable thickness and lateral size. This work focuses on characterisation of the as grown materials using Raman, PL and XPS techniques to assess the quality and reproducibility of the developed synthesis methods. Additionally in this work the novel synthesis routes for growth of WS2 large area monolayers have been assessed. The as grown samples on top of exhibiting strong PL response showed remarkable, record high electron mobility in mono and bilayer form. A certain degree of optical and electrical properties tunability is also presented in In doped WS2 layers. By combining the growth of monolayers the heterostructures of MoS2/WS2 are successfully grown on multiple substrates and their quality and structure is carefully investigated.
Können wir von Kreisen das Rechnen und Beweisen lernen? Experimente zur Entweder-Oder-Unterscheidung
Creators: name: Rathgeb, Martin
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2015
Subjects: subject: 510

description: George Spencer-Brown [GSB] führt mit seinen „Laws of Form“ [LoF] (1969) den Leser ausgehend vom empraktischen Wissen übers Unterscheiden/ Bezeichnen hin zum logischen Rechnen – und wieder zurück. Dabei wird der Leser mathematisch sozialisiert und der Anfang des Buches durch sein Ende reichhaltiger. Zielpublikum ist nach Auskunft des Autors einerseits der (fachmathematische) Laie und andererseits der (mathematikphilosophische) Profi. Denn der Autor behandelt die Aussagenlogik einerseits als eine Einführung in die Mathematik und andererseits als eine Grundlegung von Mathematik. Dabei entwickelt er sein Thema auf ungewohnte, doch letztlich faszinierende Weise. Im Folgenden thematisiere ich GSBs Illustrationen und Experimente mit Kreisen: Durch sie zeigt er, dass erst die Lesart aus einem Arrangement einen Ausdruck macht und dass Lesarten auf zum Teil impliziten Konventionen beruhen (vgl. 1.). Durch sie rechtfertigt er die Initiale seiner cross- Arithmetik (vgl. 2.) und reflektiert die Entweder-Oder-Unterscheidung, auf welcher das Beweisen per Fallunterscheidung gründet und damit letztlich GSBs Einführung in bzw. Grundlegung von Mathematik (vgl. 3.).
Moduli spaces of AdS_5 vacua in N=2 supergravity
Creators: name: Louis, Jan
name: Muranaka, Constantin
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We determine the conditions for maximally supersymmetric AdS_5 vacua of five-dimensional gauged N=2 supergravity coupled to vector-, tensor- and hypermultiplets charged under an arbitrary gauge group. In particular, we show that the unbroken gauge group of the AdS_5 vacua has to contain an U(1)_R-factor. Moreover we prove that the scalar deformations which preserve all supercharges form a Kahler submanifold of the ambient quaternionic Kahler manifold spanned by the scalars in the hypermultiplets.
description: 17 pages
MPEC 2023-S227 : 2023 RC49
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 RC49

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Klausur: die Institutionalisierung der Unsichtbarkeit der Frau in geistlichen Gemeinschaften
Creators: name: Brennan, Margaret
Publisher: name: Concilium
Year: 1970

description: Concilium, Bd. 21 Nr. 6 (1985): Concilium: Internationale Zeitschrift für Theologie, Band 21, Heft 6
Modular periodicity of exponential sums of symmetric Boolean functions and some of its consequences
Creators: name: Castro, Francis N.
name: Medina, Luis A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 05E05, 11T23, 11B50

description: This work brings techniques from the theory of recurrent integer sequences to the problem of balancedness of symmetric Boolean functions. In particular, the periodicity modulo $p$ ($p$ odd prime) of exponential sums of symmetric Boolean functions is considered. Periods modulo $p$, bounds for periods and relations between them are obtained for these exponential sums. The concept of avoiding primes is also introduced. This concept and the bounds presented in this work are used to show that some classes of symmetric Boolean functions are not balanced. In particular, every elementary symmetric Boolean function of degree not a power of 2 and less than 2048 is not balanced. For instance, the elementary symmetric Boolean function in $n$ variables of degree $1292$ is not balanced because the prime $p = 176129$ does not divide its exponential sum for any positive integer $n$. It is showed that for some symmetric Boolean functions, the set of primes avoided by the sequence of exponential sums contains a subset that has positive density within the set of primes. Finally, in the last section, a brief study for the set of primes that divide some term of the sequence of exponential sums is presented.
El impuesto sobre la renta para personas naturales y su evolución en Colombia durante el periodo 2012 - 2018
Creators: name: Hernández Baños, Tatiana
name: Mercado Ortega, Ricardo
Publisher: name: Universidad de Cartagena
Year: 2019
Subjects: subject: Impuesto sobre la renta
subject: Impuestos

description: En este artículo de revisión bibliográfica se analizó el tema de la evolución del impuesto de renta en Colombia durante el periodo 2012 - 2018, con base en la dinámica cambiante del marco tributario. Por lo que es importante para las personas naturales responsables del impuesto y para los independientes, contar con una guía que aporte elementos de ejecución, planeación y análisis a la hora de proyectar su impuesto.
Impulsivity as a trait in domestic dogs (Canis familiaris)
Creators: name: Barela, Jessica
name: Stevens, Jeffrey
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Animal Studies
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: Canine cognition
subject: Dogs
subject: Impulsivity
subject: Inhibitory control
subject: Meta-analysis

description: We plan to conduct a meta-analysis to assess the evidence for impulsivity as a behavioral trait in domestic dogs (Canis familiaris). The meta-analysis will include studies measuring dogs' performance in several impulsivity tasks.
Calamus affinis 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 affinis

description: Calamus affinis (Becc.) W.J.Baker, comb. nov.
 Daemonorops affinis Becc., Leafl. Philipp. Bot. 8: 3042 (1919).
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 141, DOI: 10.11646/phytotaxa.197.2.7, http://zenodo.org/record/13640784
Neue Ansätze zur Erfassung epistemologischer Überzeugungen von Studierenden
Creators: name: Rott, Benjamin
name: Leuders, Timo
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2015
Subjects: subject: 510

description: Im Projektverbund LeScEd (Learning the Science of Education) im Rahmen der BMBF-Förderinitiative KoKoHs (Kompetenzmodellierung und Kompetenzerfassung im Hochschulsektor) werden Instrumente zur Erfassung von Forschungskompetenzen von Lehramtsstudierenden entwickelt. Das hier berichtete Teilprojekt fokussiert auf den Bereich mathematikbezogener Fähigkeiten und Überzeugungen von Studierenden des Lehramtes Mathematik. Ziel des Projektes ist die Entwicklung valider Erhebungsinstrumente in Verbindung mit der Weiterentwicklung der Theorie und Erfassung mathematikbezogener Überzeugungen.
Actualización e importancia de la cuenta de producción del sector agropecuario en el Departamento de Bolívar 1991 - 1992
Creators: name: Padilla Morillo, Jose A.
name: Perez Romero, Alvaro E.
Publisher: name: Universidad de Cartagena
Year: 1993
Subjects: Cuentas regionales
Cuenta de producción - Sector Agropecuario

description: Tesis (Economista).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Economía, 1993.
description: El presente estudio tiene por objeto la actualización e importancia de la cuenta de producción del sector agropecuario en el departamento de Bolivar 1991-1992 (E)
Einstieg in die Ingenieurmathematik aus der Berufspraxis - Unterstützung in Mathematik und fachadäquaten Lernstrategien
Creators: name: Ruge, Johanna
name: Wegener, Josephine
name: Frühbis-Krüger, Anne
name: Hochmuth, Reinhard
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2015
Subjects: subject: 510

description: Das Projekt „Einstieg in die Ingenieurmathematik aus der Berufspraxis“ wurde im Wintersemester 2014/2015 an der Leibniz Universität Hannover pilotiert und richtet sich an Studierende, die nach längerer Zeit der Berufspraxis ihr Studium ohne bzw. mit länger zurückliegender Allgemeiner Hochschulreife aufnehmen. Für diese Gruppe von Studierenden stellt die Veranstaltung Mathematik für Ingenieure I in der Regel ein großes Hindernis für den erfolgreichen Einstieg ins Studium dar.
Narrow Nucleon-$ψ(2S)$ Bound State and LHCb Pentaquarks
Creators: name: Eides, Michael I.
name: Petrov, Victor Yu.
name: Polyakov, Maxim V.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We interpret the newly discovered pentaquark $P_c(4450)$ as a bound state of charmonium $ψ(2S)$ and the nucleon. The binding potential is due to charmonium-nucleon interaction that in the heavy quark approximation is proportional to the product of the charmonium chromoelectric polarizability and the nucleon energy-momentum distribution. We use the large $N_c$ expansion to estimate the quarkonium polarizability and calculate the nucleon properties in the framework of the mean-field picture of light baryons. Two almost degenerate states $J^P=(1/2)^-$ and $J^P=(3/2)^-$ are predicted at the position of the $P_c(4450)$ pentaquark. We find that the nucleon-$ψ(2S)$ bound state has a naturally narrow width in the range of tens of MeV. The unitary multiplet partners of the $P_c(4450)$ pentaquark and the generalization to $b \bar b$-nucleon pentaquark bound states are discussed.
description: 14 pages
title: „Rote Hochzeiten“
title: eine ethnologische Untersuchung kambodschanischer Heiratsbiographien aus der Zeit der Khmer Rouge
titleType: Subtitle
Creators: name: Städing, Sophie
Publisher: name: Göttingen : GISCA,Göttingen Institute for Social and Cultural Anthropology, Georg-August-Universität Göttingen
Year: 2016

description: Das Regime der Khmer Rouge (1975-1979) in Kambodscha führte eine spezielle, staatlich verordnete Heiratspraxis ein. Die aktuell zirkulierenden Diskurse zum Thema Heirat im Khmer Rouge-Regime zeigen meist eine eindimensionale Darstellung der damaligen Heiratspraxis als „Zwangsheiraten“. Die zentrale Frage, der die Arbeit in einer detaillierten Untersuchung unter Einbezug von Sherry Ortners handlungstheoretischem Ansatz zu „Agency“ nachgeht, ist, welches Handlungsvermögen die unterschiedlichen Akteur_innen im Kontext der Khmer Rouge-Heiraten besaßen. Basierend auf im Rahmen einer mehrmonatigen Feldforschung in Kambodscha erhobenen narrativen Interviews, ermöglicht die Autorin Einblicke in die Heiratsbiographien von betroffenen Kambodschaner_innen. Sie gelangt zu dem Schluss, dass in gängigen Diskursen das Handlungsvermögen der betroffenen Personen unterschätzt wird. Die von den Beteiligten geschilderten Heiratsrealitäten zeichnen ein weitaus komplexeres Bild der Heiraten im Regime der Khmer Rouge. Es existierten – wenn auch in unterschiedlichem und teils sehr begrenztem Ausmaße – Einfluss- und Handlungsmöglichkeiten der Akteur_innen auf lokaler Ebene. So hatten nicht nur die regionalen und lokalen Kader der Khmer Rouge einen wichtigen Einfluss auf die Umsetzung der Heiratspolitik, sondern auch die heiratenden Frauen und Männer sowie ihre Familien verfügten über Handlungsmacht und versuchten eigene Heiratsprojekte zu verfolgen.
description: GISCA occasional paper series ; 2
Plan de desarrollo para la comuna No. 30
Creators: name: De Los Rios De Avila, Yanire
name: Rocha Diaz, Mariela
Publisher: name: Universidad de Cartagena
Year: 1991
Subjects: Plan de Desarrollo

description: Tesis (Economista).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Economía, 1991.
description: El presente estudio tiene por objeto diagnosticar los problemas y necesidades que padece este sector del municipio de cartagena (comuna 30), para de esta forma elaborar un plan de desarrollo que contribuya a elevar y mejorar progresivamente las condiciones de vida material y no material de la comunidad.
Estructura sociocultural de la participación comunitaria en Paraíso II a partir de una nueva modalidad de atención al menor de siete años
Creators: name: Manjarrez Herazo, Arleide
name: Arellano Castellon, Yadira
Publisher: name: Universidad de Cartagena
Year: 1988
Subjects: Vida en comunidad - Aspectos culturales
Participación social
Desarrollo de la comunidad
Niños - Servicio social

description: Tesis (Trabajador(a) Social) -- Universidad de Cartagena. Facultad de Ciencias Sociales y Educación. Programa de Trabajo Social, 1988
description: El siguiente estudio tiene por objeto analizar las experiencias sobre participación que ha tenido la comunidad Paraíso II en la solución de sus problemas a través de su desarrollo histórico y su incidencia en la organización de una institución para la atención del menor de siete años.
Diseño de un modelo de gestión por competencias en el laboratorio clínico Santa Lucia
Creators: name: Castro Guerrero, Alexandra María
name: Rodríguez Ortega, Karina
Publisher: name: Universidad de Cartagena
Year: 2014
Subjects: Contrucción de modelos - Administración
Planificación empresarial

description: Tesis (Especialista en Gestión Gerencial) -- Universidad de Cartagena. Facultad de ciencias económicas. Especialidad en gestión gerencial, 2014
description: El departamento de talento humano del Laboratorio Clínico Santa Lucia (LCSL), no posee un modelo de gestión competencias determinado a seguir, con el cual se pueda seleccionar, medir y evaluar las competencias del personal en las diferentes áreas que funcionan en la organización. Una gestión que encamine las actividades administrativas y operativas para mantener un estándar de eficiencia, efectividad y eficacia. En el mismo orden de ideas, se pueden enumerar las carencias que se presentan en el talento de la organización por la debilidad en la gestión. Al interior de la organización se puede observar: poca planificación estratégica de los procesos y subproceso de departamento de talento humano, inconformidades del cliente por información errónea, pérdida de tiempo y mal servicio. Pérdida de cliente por mala atención en el servicio, pérdida de tiempo y recursos en capacitaciones luego no llega a su aplicación, falta de empoderamiento en los procesos, rotación de personal, personal con falta de conocimientos en los cargos a desempeñar.
title: "Die Hybridität der Nation"
title: ; narrative Strategien der Gruppenbildung in Iraqi Kurdistan aus der Perspektive von Homi K. Bhabha
titleType: Subtitle
Creators: name: Scheunemann, Tom
Publisher: name: Göttingen : GISCA,Göttingen Institute for Social and Cultural Anthropology, Georg-August-Universität Göttingen
Year: 2016

description: Diese Arbeit drängt auf die Analyse der Komplexität nationalistischer Narrative – exemplarisch aufgezeigt am Beispiel der irakischen Kurden – und bedient sich dabei der Konzepte Homi K. Bhabhas, um sowohl unwahrscheinliche Erfolge nationalistischer Konstruktionen, als auch deren inhärente Brüchigkeit zu veranschaulichen. Mit Bhabhas Begriffen der Differenz, Hybridität, Mimikry und des Dritten Raums wird gezeigt, wie die Gleichzeitigkeit dieser Brüchigkeit und der unwahrscheinlichen Stärke nicht zufällig zu beobachten ist, sondern Voraussetzung für die Konstruktion von Identität ist. Anstatt nationalistische Rhetorik durch unhinterfragte Wiederholung zu reifizieren, rücken die Kernfunktionsweisen nationalistischer Narrative in den Fokus. Der Konflikt zwischen irakischem Zentralstaat und kurdischer Autonomieverwaltung wird als ein komplexer Prozess beschrieben, in dem, fern jeder Dialektik, hybride Identitäten in gegenseitiger Abhängigkeit und durch ein komplexes Hin und Her vorläufig stabilisiert werden. Dadurch lässt sich der Konflikt als ein Prozess der Entstehung der konstruierten Nation beschreiben, ohne dabei diese Geschichte als einen Kampf zweier kohärenter (nationaler) Subjekte zu erzählen.
description: GISCA occasional paper series ; 3
Calamus angustifolius 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 angustifolius

description: Calamus angustifolius Griff., Calcutta J. Nat. Hist. 5: 89 (1845).
 Daemonorops angustifolia (Griff.) Mart., Hist. Nat. Palm. 3: 327 (1853).
 Calamus hygrophilus Griff., Palms Brit. E. Ind.: t. 213 C (1850). Daemonorops hygrophila (Griff.) Mart., Hist. Nat. Palm. 3: 328 (1853). Palmijuncus hygrophilus (Griff.) Kuntze, Revis. Gen. Pl. 2: 733 (1891).
 Daemonorops carcharodon Ridl., Mat. Fl. Malay. Penins. 2: 178 (1907).
 Daemonorops angustispatha Furtado, Gard. Bull. Straits Settlem. 9: 161 (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 141, DOI: 10.11646/phytotaxa.197.2.7, http://zenodo.org/record/13640784
Tether-cutting Reconnection between Two Solar Filaments Triggering Outflows and a Coronal Mass Ejection
Creators: name: Chen, Huadong
name: Zhang, Jun
name: Li, Leping
name: Ma, Suli
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Triggering mechanisms of solar eruptions have long been a challenge. A few previous case studies have indicated that preceding gentle filament merging via magnetic reconnection may launch following intense eruption, according with the tether-cutting (TC) model. However, detailed process of TC reconnection between filaments has not been exhibited yet. In this work, we report the high resolution observations from the Interface Region Imaging Spectrometer (IRIS) of TC reconnection between two sheared filaments in NOAA active region 12146. The TC reconnection commenced since 15:35 UT on 2014 August 29 and triggered an eruptive GOES C4.3-class flare 8 minutes later. An associated coronal mass ejection appeared in the field of view of SOHO/LASCO C2 about 40 minutes later. Thanks to the high spatial resolution of IRIS data, bright plasma outflows generated by the TC reconnection are clearly observed, which moved along the subarcsecond fine-scale flux tube structures in the erupting filament. Based on the imaging and spectral observations, the mean plane-of-sky and line-of-sight velocities of the TC reconnection outflows are separately measured to be 79 and 86 km/s, which derives an average real speed of 120 km/s. In addition, it is found that spectral features, such as peak intensities, Doppler shifts, and line widths in the TC reconnection region evidently enhanced compared with those in the nearby region just before the flare.
description: Accepted for publication in ApJLetter
Calidad del empleo en hoteles y restaurante del sector turístico de Cartagena De Indias
Creators: name: Daniells Escobar, Joao Alejandro
name: Taron Hernández, Arnulfo Antonio
Publisher: name: Universidad de Cartagena
Year: 2014
Subjects: Mercado laboral
Calidad del empleo - Hoteles y restaurantes - Sector turistico - Cartagena De Indias - Bolivar

description: Tesis (Economista).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Economía, 2014
description: Objetivo: Analizar la calidad del empleo en hoteles y restaurante del sector turístico de Cartagena de Indias en 2012, para conocer si la prosperidad que experimenta este sector se refleja en el bienestar de los trabajadores. Metodología: Se diseñó un estudio de naturaleza analítico-descriptiva, basado en la información estadística de la Gran Encuesta Integrada de Hogares del DANE referida al subsector de hoteles y restaurantes de Cartagena durante 2012. Para la medición de la calidad del empleo se construyó un índice sintético que tuvo en cuenta ingreso, modalidad de contratación, afiliación a la seguridad social y horario de trabajo. Resultados: La mayoría de trabajadores del sector son mujeres, relativamente jóvenes, jefes de hogar, de estado civil separado y unión libre, del régimen contributivo, no asisten en la actualidad a centros de formación educativa, aunque tienen formación secundaria y universitaria, de estrato bajo, y de vivienda cuentan con servicios públicos. Los años de escolaridad, la afiliación a la seguridad social, los ingresos laborales, la posición ocupacional y el tiempo perteneciendo a la empresa o negocio, fueron las variables determinantes de la mencionada calidad. Además, se contrastaron estos hallazgos con estudios afines, y en general, los resultados y análisis fueron consistentes. Conclusiones: La calidad del empleo en hoteles y restaurantes de Cartagena es baja y está en función de diversas características individuales y ocupacionales.
Exploration of neuronal ensembles responsible for sleep and body temperature regulation
Creators: name: Ma, Ying
Publisher: name: Imperial College London
Year: 2019

description: Sleep is a behaviour we experience every day but the fundamental function(s) and the neuronal circuitry underlying it remain mystery. Previous study from our laboratory suggests the lateral preoptic (LPO) area of the hypothalamus plays an important role in recovery sleep (RS) after sleep deprivation (SD) as well as 2-adrenergic agonist (dexmedetomidine)-induced sedation and hypothermia. Preliminary data of whole-brain mapping of the neuronal activity of 5-hr SD mice and 2- hr RS (followed 5-hr SD) mice by cFos expression confirmed that the LPO shows higher neuronal activity in RS mice compared to SD mice. Cell-type specific ablation of galaninergic neurons in the LPO abolished sleep homeostasis in mice, in terms of the amount of RS as well as the increased slow wave activity (SWA) of RS after SD which is a hallmark of sleep homeostasis. In addition, mice with ablation of LPOGal neurons have a permanent elevation in their body temperature compared to control mice. LPOGal neurons are also involved in mediating dexmedetomidine (DEX)-induced sedation and hypothermia. Mice without LPOGal neurons have reduced effects: administration of DEX cannot induce high-power  oscillations or sustained hypothermia. Together, LPOGal neurons unite sleep homeostasis and 2-adrenergic sedation. Preliminary whole-brain cFos mapping also revealed a few other potential brain regions that might be involved in sleep/wake regulation, including the ventral tegmental area (VTA). Chemogenetic activation and inactivation increase the neuronal activity of VTAVglut2 and VTAVgat neurons, respectively, and both increase wakefulness. VTAVglut2/Nos1 neurons promote wakefulness by sending excitatory projections to both the lateral hypothalamus (LH) and nucleus accumbens (NAc), whereas the wake-inhibiting effect of VTAVgat neurons is achieved by sending inhibitory projections to local VTAVglut2 and VTADA neurons as well as to the orexin neurons in the LH, implying the significance of the VTA in sleep/wake regulation.
Proceedings of the Eleventh International Workshop on Developments in Computational Models
Creators: name: Muñoz, César A.
name: Pérez, Jorge A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: This volume contains the proceedings of DCM 2015, the 11th International Workshop on Developments in Computational Models held on October 28, 2015 in Cali, Colombia. DCM 2015 was organized as a one-day satellite event of the 12th International Colloquium on Theoretical Aspects of Computing (ICTAC 2015). Several new models of computation have emerged in the last few years, and many developments of traditional computational models have been proposed with the aim of taking into account the new demands of computer systems users and the new capabilities of computation engines. A new computational model, or a new feature in a traditional one, usually is reflected in a new family of programming languages, and new paradigms of software development. The aim of the DCM workshop series is to bring together researchers who are currently developing new computational models or new features for traditional computational models, in order to foster their interaction, to provide a forum for presenting new ideas and work in progress, and to enable newcomers to learn about current activities in this area. Topics of interest include all abstract models of computation and their applications to the development of programming languages and systems.
Estudio de factibilidad para el montaje y puesta en marcha de una empresa comercializadora de jugos y bebidas naturales a base de frutas y hortalizas, en la ciudad de Cartagena llamada "Zumovit"
Creators: name: Angulo Aguilar, Adriana P
name: Pico Castellanos, Leidy J
Publisher: name: Universidad de Cartagena
Year: 2016
Subjects: Estudio de mercado
Estudios de factibilidad

description: Tesis (Administrador de Empresas).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración de Empresas, 2016
description: El presente proyecto se desarrolla con el fin de obtener información que permita verificar la factibilidad de la creación y puesta en marcha de una empresa comercializadora de jugos y bebidas naturales a base de frutas y hortalizas, que a su vez satisfaga las necesidades de las personas por consumir bebidas saludables que ayuden al mejoramiento de su calidad de vida.
Calamus asteracanthus 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 asteracanthus

description: Calamus asteracanthus (Becc.) W.J.Baker, comb. nov.
 Daemonorops asteracantha Becc., Ann. Roy. Bot. Gard. (Calcutta) 12(1): 227 (1911).
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 141, DOI: 10.11646/phytotaxa.197.2.7, http://zenodo.org/record/13640784
Revealing the (predictive) code of top-down signals in the brain
Creators: name: Martin, Christian-David
Publisher: name: Imperial College London
Year: 2019

description: Reciprocal connections are common in the brain, yet little is known about their functional role. Top-down connections, in particular, remain functionally obscure in both neuroscience and in the nascent field of deep learning. On the theoretical side, predictive coding has been put forward as a framework that assigns specific roles to top-down and bottom-up connections in sensory information processing. It remains unclear, however, if and how the brain implements this predictive code. This work examined top-down signals in the auditory cortex and in the corticostriatal system in macaques in order to validate the claims put forward by predictive coding. This theory suggests there are imbalances in message passing up and down the cortical hierarchy; these imbalances imply cross-frequency couplings should predominate top-down. It is unknown whether these asymmetries are expressed in cross-frequency interactions in the brain. This work examined cross-frequency interactions across four sectors of the macaque auditory cortex. Predictive coding also applies in decision making, where it allows for action selection based on predicted reward (or value). This is more commonly known as reinforcement learning (RL) and is supported by the fronto-striatal systems in the brain. The computational mechanisms that drive learning in this system are unknown, however. This work drew on a recurrent neural network (RNN) model of the dlPFC-dSTR circuit in the brain together with recordings from macaques from the same regions to answer this question. Altogether, the findings are largely consistent with the predictive coding framework.
Deriving the exact nonadiabatic quantum propagator in the mapping variable representation
Creators: name: Hele, Timothy J. H.
name: Ananth, Nandini
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive an exact quantum propagator for nonadiabatic dynamics in multi-state systems using the mapping variable representation, where classical-like Cartesian variables are used to represent both continuous nuclear degrees of freedom and discrete electronic states. The resulting expression is a Moyal series that, when suitably approximated, can allow for the use of classical dynamics to efficiently model large systems. We demonstrate that different truncations of the exact propagator lead to existing approximate semiclassical and mixed quantum-classical methods and we derive an associated error term for each method. Furthermore, by combining the imaginary-time path-integral representation of the Boltzmann operator with the exact propagator, we obtain an analytic expression for thermal quantum real-time correlation functions. These results provide a rigorous theoretical foundation for the development of accurate and efficient classical-like dynamics to compute observables such as electron transfer reaction rates in complex quantized systems.
description: 22 pages, 2 figures. Submitted to the "Reaction Rate Theory" Faraday Discussion (i.e. conference) to be held in Cambridge, UK in September 2016
Factores de riesgo asociados a falla multiorgánica en pacientes pediátricos con diagnóstico de infección por sars-cov2
Creators: name: Montes Fontalvo, Laura Vanessa
Publisher: name: Universidad de Cartagena
Year: 2022
Subjects: subject: COVID-19 (Enfermedad)
subject: Infecciones por coronavirus
subject: Infecciones respiratorias
subject: Niños - Enfermedades

description: La infección por SARS COV2 tiene una prevalencia de 7.6% en la población pediátrica colombiana; sin embargo, de estos pacientes solo un 0.03 a un 0.4% ingresan a unidad de cuidados intensivos presentando factores que podrían contribuir al desarrollo de una falla multiorgánica. El presente es un estudio de carácter observacional, analítico, retrospectivo de corte transversal que buscaba determinar los factores riesgo asociados a la presencia de falla multiorgánica en paciente pediátricos con diagnóstico de infección por SARS-COV2. Como parte de los objetivos, se determinaron las frecuencias de las variables bioquímicas e imagenológicas, así como el impacto de estas en función de la presencia o ausencia de falla multiorgánica en la población de estudio. Se incluyeron todos los niños de 1 mes a 18 años de edad que fueron admitidos en el servicio de hospitalización y unidad de cuidados intensivos del Hospital Infantil Napoleón Franco Pareja de Cartagena/Bolívar con diagnostico confirmado de infección por SARS COV2 (mediante reacción en cadena de polimerasa, antígeno o serología) entre el mes de marzo de 2020 y enero de 2022. Las variables fueron obtenidas a partir de una fuente primaria (Historia clínica) y se estableció asociación entre la presencia o no de las variables demográficas, bioquímicas o imagenológicas con el desarrollo de desenlaces como síndrome de distrés respiratorio agudo, shock séptico, síndrome de inflamación multisistémica asociado a COVID, lesión renal aguda y daño miocárdico. Se identificó un total de 43 pacientes; el 11.6% de los pacientes tenía inmunosupresión primaria o secundaria que se asoció a enfermedad grave (18.6%) y crítica (25.6%). El 60.5% fue diagnosticado como MIS-C (Síndrome de Inflamación Multisistémica relacionada a COVID-19), de los cuales un gran porcentaje requirió admisión a UCIP por el riesgo de complicaciones. Solo el 14% desarrolló falla multiorgánica encontrando una asociación estadísticamente significativa con la presencia de comorbilidades (p= 0.00416), la severidad de la enfermedad (p= 0.0113) y la fracción de eyección disminuida (p=0.0278). A la fecha no se cuenta con un modelo paraclínico predictor de severidad, por lo cual se debe incentivar al personal sanitario a la búsqueda temprana de factores que pudieran elevar el riesgo de desenlaces fatales y promover futuras investigaciones.
Measurement of the Branching Ratio for the Beta Decay of $^{14}$O
Creators: name: Voytas, P. A.
name: George, E. A.
name: Severin, G. W.
name: Zhan, L.
name: Knutson, L. D.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present a new measurement of the branching ratio for the decay of $^{14}$O to the ground state of $^{14}$N. The experimental result, $λ_0/λ_{\rm total} = (4.934 \pm 0.040\kern 1pt{\rm (stat.)} \pm 0.061\kern 1pt{\rm (syst.)}) \times 10^{-3}$, is significantly smaller than previous determinations of this quantity. The new measurement allows an improved determination of the partial halflife for the superallowed $0^+ \rightarrow 0^+$ Fermi decay to the $^{14}$N first excited state, which impacts the determination of the $V_{ud}$ element of the CKM matrix. With the new measurement in place, the corrected $^{14}$O ${\cal F} t $ value is in good agreement with the average ${\cal F} t $ for other superallowed $0^+ \rightarrow 0^+$ Fermi decays.
description: 8 pages, 4 figures
Advancing efficiency and robustness of neural networks for imaging
Creators: name: Kamnitsas, Konstantinos
Publisher: name: Imperial College London
Year: 2019

description: Enabling machines to see and analyze the world is a longstanding research objective. Advances in computer vision have the potential of influencing many aspects of our lives as they can enable machines to tackle a variety of tasks. Great progress in computer vision has been made, catalyzed by recent progress in machine learning and especially the breakthroughs achieved by deep artificial neural networks. Goal of this work is to alleviate limitations of deep neural networks that hinder their large-scale adoption for real-world applications. To this end, it investigates methodologies for constructing and training deep neural networks with low computational requirements. Moreover, it explores strategies for achieving robust performance on unseen data. Of particular interest is the application of segmenting volumetric medical scans because of the technical challenges it imposes, as well as its clinical importance. The developed methodologies are generic and of relevance to a broader computer vision and machine learning audience. More specifically, this work introduces an efficient 3D convolutional neural network architecture, which achieves high performance for segmentation of volumetric medical images, an application previously hindered by high computational requirements of 3D networks. It then investigates sensitivity of network performance on hyper-parameter configuration, which we interpret as overfitting the model configuration to the data available during development. It is shown that ensembling a set of models with diverse configurations mitigates this and improves generalization. The thesis then explores how to utilize unlabelled data for learning representations that generalize better. It investigates domain adaptation and introduces an architecture for adversarial networks tailored for adaptation of segmentation networks. Finally, a novel semi-supervised learning method is proposed that introduces a graph in the latent space of a neural network to capture relations between labelled and unlabelled samples. It then regularizes the embedding to form a compact cluster per class, which improves generalization.
Dark matter annihilation with s-channel internal Higgsstrahlung
Creators: name: Kumar, Jason
name: Liao, Jiajun
name: Marfatia, Danny
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study the scenario of fermionic dark matter that annihilates to standard model fermions through an s-channel axial vector mediator. We point out that the well-known chirality suppression of the annihilation cross section can be alleviated by s-channel internal Higgsstrahlung. The shapes of the cosmic ray spectra are identical to that of t-channel internal Higgsstrahlung in the limit of a heavy mediating particle. Unlike the general case of t-channel bremsstrahlung, s-channel Higgsstrahlung can be the dominant annihilation process even for Dirac dark matter. Since the s-channel mediator can be a standard model singlet, collider searches for the mediator are easily circumvented.
description: 7 pages, 4 figures
Student experiences of socioeconomic disadvantaged medical students: A scoping review protocol
Creators: name: Lima, Esdras Morais Sobreiro
name: Sanches, Leide da Conceição
name: Dias Vasconcelos, Lucas
name: Fujii, Paula Cristina Yukari Suzaki
name: Guedes, Letícia Pereira
name: Fredrich, Vanessa Cristine Ribeiro
Publisher: name: figshare
Year: 2023
Subjects: Poverty, inclusivity and wellbeing
Health equity
Inclusive education
Education systems not elsewhere classified
Public health not elsewhere classified

description: In English: This document outlines the protocol for a scoping review assessing the extent of the literature in 10 years (2012-2022) about who are the low-income medical students and what are their experiences in medical schools, in order to provide a base material for future studies on the needs of this group. ------------------------------------------------------------------------------ In Portuguese: Este documento descreve o protocolo para uma revisão de escopo avaliando a extensão da literatura em 10 anos (2012-2022) sobre quem são os estudantes de medicina de baixa renda e quais são suas experiências nas escolas médicas, a fim de fornecer um material de base para futuros estudos sobre as necessidades desse grupo. ------------------------------------------------------------------------------ In Spanish: Este documento describe el protocolo para una revisión de escopo que evalúa la producción de conocimiento en 10 años (2012-2022) sobre quiénes son los estudiantes de medicina de bajos ingresos y cuáles son sus experiencias en las facultades de medicina, con el fin de proporcionar un material base para futuros estudios sobre las necesidades de este colectivo.
Calamus ater 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 ater

description: Calamus ater (J.Dransf.) W.J.Baker, comb. nov.
 Daemonorops atra J.Dransf., Bot. J. Linn. Soc. 81: 15 (1980).
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 141, DOI: 10.11646/phytotaxa.197.2.7, http://zenodo.org/record/13640784
IR-improved Soft-wall AdS/QCD Model for Baryons
Creators: name: Fang, Zhen
name: Li, Dan-Ning
name: Wu, Yue-Liang
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We construct an infrared-improved soft-wall AdS/QCD model for baryons by considering the infrared-modified 5D conformal mass and Yukawa coupling of the bulk baryon field. The model is also built by taking into account the parity-doublet pattern for the excited baryons. When taking the bulk vacuum structure of the meson field to be the one obtained consistently in the infrared-improved soft-wall AdS/QCD model for mesons, we arrive at a consistent prediction for the baryon mass spectrum in even and odd parity. The prediction shows a remarkable agreement with the experimental data. We also perform a calculation for the $ρ(a_1)$ meson-nucleon coupling constant and obtain a consistent result in comparison with the experimental data and many other models.
description: 12 pages, 4 tables, 1 figure, to be published in PLB
Avaliação da formação contínua de professores: uma necessidade emergente.
Creators: name: Casanova, Maria
Publisher: name: figshare
Year: 2023
Subjects: Professional education and training

description: Ao refletirmos sobre a influência da formação contínua de professores no seu próprio desenvolvimento pessoal e profissional e no dos seus pares, no desenvolvimento dos alunos, na melhoria da organização de pertença e ainda no desenvolvimento da comunidade educativa, propomo-nos apresentar este pequeno texto.
The Synthesis, Structure and Electronic Properties of a Lead-Free Hybrid Inorganic-Organic Double Perovskite (MA)2KBiCl6 (MA = methylammonium)
Creators: name: Wei, Fengxia
name: Deng, Zeyu
name: Sun, Shijing
name: Xie, Fei
name: Kieslich, Gregor
name: Evans, Donald M.
name: Carpenter, Michael A.
name: Bristowe, Paul D.
name: Cheetham, Anthony K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In a search for Lead-free materials that could be used as alternatives to the hybrid perovskites,(MA)PbX3, in photovoltaic applications, we have discovered a hybrid double perovskite, (MA)2KBiCl6, which shows striking similarities to the lead analogues. Spectroscopic measurements and nanoindentation studies are combined with density functional calculations to reveal the properties of this interesting system.
Calamus aureus 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 aureus

description: Calamus aureus (Renuka & Vijayak) W.J.Baker, comb. nov.
 Daemonorops aurea Renuka & Vijayak., Rheedea 4: 122 (1994).
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 141, DOI: 10.11646/phytotaxa.197.2.7, http://zenodo.org/record/13640784
Campodea (Campodea) blandinae subsp. virgolae 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 blandinae
Campodea (campodea) blandinae virgolae condé 1948

description: Campodea (Campodea) blandinae virgolae Condé 1948
Campodea (Campodea) cyrnea virgolae Condé 1948c: 64, figs d, f, h.
Differential diagnosis from the f. typ. (Condé 1948c)
Thinner lp mesonotal macrosetae than in f. typ.
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 30, DOI: 10.5852/ejt.2020.728.1181, http://zenodo.org/record/4316883