bluuebunny/crossref_metadata_2025 huggingface dataset:
On the δ-Pinching Function of the Sectional Curvature of a Compact Connected Lie Group G with a Bi-Invariant Riemannian Metric and a Vectorial Torsion Connection
Authors: Rodionov E.D. , Khromova O.P.
Published: November 2020

One of the important problems of Riemannian geometry is the problem of establishing connections between curvature and the topology of a Riemannian manifold, and, in particular, the influence of the sign of sectional curvature on the topological structure of a Riemannian manifold. Of particular importance in these studies is the question of the influence of d-pinching of Riemannian metrics of positive sectional curvature on the geometric and topological structure of the Riemannian manifold. This question is most studied for the homogeneous Riemannian case. In this direction, the classification of homogeneous Riemannian manifolds of positive sectional curvature, obtained by M. Berger, N. Wallach, L. Bergeri, as well as a number of results on d- pinching of homogeneous Riemannian metrics of positive sectional curvature, is well known.

In this paper, we investigate Riemannian manifolds with metric connection being a connection with vectorial torsion. The Levi-Civita connection falls into this class of connections. Although the curvature tensor of these connections does not possess the symmetries of the Levi-Civita connection curvature tensor, it seems possible to determine sectional curvature. This paper studies the d-pinch function of the sectional curvature of a compact connected Lie group G with a biinvariant Riemannian metric and a connection with vectorial torsion. It is proved that it takes the values d(||V ||)∈(0,1].
SEISMIC PERFORMANCE EVALUATION OF A MASONRY BUILDING SUBJECTED TO NEAR AND FAR FIELD GROUND MOTIONS
Authors: Saygili Özden
Published: November 2020

On October 23, 2011 an earthquake occurred approximately 20 km north of the province of Van,Turkey with a magnitude of Mw 7.2. Following the main earthquake, 111 aftershocks withmagnitudes of 4.0 and above occurred. The state of damage was very severe and considerableamount of unreinforced masonry buildings were affected highlighting the need for investigating theseismic design of unreinforced masonry buildings in the affected area. In this paper, seismicbehaviour of a two story masonry building designed according to the Turkish Building Seismic Code2018 is presented. The main objective of this activity was to study the near field and far field syntheticground motions, artificial ground motions and evaluating the responses to get reliable information onthe seismic response of masonry buildings.
EFFECT OF WATER-CEMENT RATIO, CEMENT DOSAGE, TYPE OF CEMENT AND CURING PROCESS ON THE DEPTH OF CARBONATION OF CONCRETE
Authors: Jedidi Malek , Benjeddou Omrane , Soussi Chokri
Published: November 2020

In recent years, the durability of concrete has been the subject of a few research projects carried out by several scientific and technical centres. As a major cause of concrete degradation around the world, reinforcing steel corrosion requires our full attention. This article analyses one of the phenomena at the origin of these disorders, namely the carbonation of concrete, and proposes some provisions to guard against it. The article is divided into two parts; the first describes the causes and consequences of the chemical process of carbonation as well as the means to protect it. The second deals with the influence factors on carbonation such as the minimum cement dosage, the type of cement, the water-cement ratio (W/C) and the reinforcement coating. Indeed, prismatic specimens (15 x 15 x 60 cm3) and cubic specimens (15 x 15 x 15 cm3) were made for different mixtures and with a W/C ratio of 0.50, 0.55 and 0.60. The prismatic specimens were subjected to a carbonation test, while the cubic specimens were used to determine the compressive strength, the corresponding density and the immersion water absorption.
DEM STUDY ON THE PENETRATION OF JACKED PILES INTO LAYERED SOFT CLAY
Authors: Yang Suchun , Zhang Mingyi , Sang Songkui
Published: November 2020

In order to explore the variation law of soil particle displacement and pile force around piles during penetration process, the DEM (Discrete Element Method) model is used to test the penetration of pile foundation in layered soft soil foundation. The variation law of pile penetration force, radial pressure at pile-soil interface, friction resistance at pile side, displacement field and force field between particles during penetration process is analyzed. Research shows: (1) The penetration force increases with the increase of penetration depth and pile diameter. The increase of pile diameter is beneficial to overcome the influence of unfavorable strata. (2) At the same penetration depth, with the continuous penetration of the pile body, the radial pressure gradually decreases, showing a significant degradation phenomenon. The reason for the degradation of lateral friction is essentially the degradation of the radial pressure. (3) The distribution of contact force chain in different soil layers is similar, but the range of action is different. The contact force in silt layer is obviously larger than that in silty clay layer. The compressive stress of the soil at the end of the pile transfers radially with tensile stress. With the increase of pile diameter, the compressive stress and tensile stress in soil layer are gradually increasing, and the influence range of compressive stress and tensile stress is also gradually increasing. (4) The displacement of the soil below the pile tip is triangular, and the soil at the pile tip is squeezed around under the action of the pile tip. The influence range of particle displacement in each soil layer is different, and the influence range of particle displacement in silt layer is obviously smaller than that in silty clay layer.
ESTIMATION OF DISPLACEMENT CAPACITY OF RECTANGULAR RC SHEAR WALLS USING EXPERIMENTAL AND ANALYTICAL DATABASE
Authors: Pavel Florin , Panfilii Petru , Farsangi Ehsan Noroozinejad
Published: November 2020

This study is focused on the evaluation of the displacement capacity of RC shear walls using both experimental and analytical results. The first observation of the study is that few experimental results for slender RC shear walls having thicknesses larger than 150 mm are available in the literature. From the experimental database, it was observed that the mean and the median ultimate drift of squat RC shear walls is about half of that obtained for slender RC shear walls. Considering the limitation of the experimental database, the simple empirical model for the ultimate drift ratio of slender RC shear walls proposed in this study is also based on available analytical results from the literature. The model provides a good fit with the observed results and besides, due to the fact that it does not require sectional analysis of the element, it allows a rapid assessment of the displacement capacity of slender RC shear walls as a function of the seismic design code parameters. The proposed formula can be inserted in future revisions of the seismic assessment guidelines for RC structures for rapid seismic evaluation purposes.
Reisen
Authors: Aschauer Wolfgang , Bachleitner Reinhard
Published: November 2020

In unserem Leben in der westlichen Gesellschaft sind Urlaubsreisen mittlerweile weitgehend selbstverständlich geworden. Die Reisemotive, Urlaubsbedürfnisse und das touristische Verhalten unterliegen im Lebensverlauf einem deutlichen Wandel. Es zeigt sich, dass sowohl individuelle Faktoren, sowie kontextuelle Bedingungen und gesamtgesellschaftliche Rahmenbedingungen das Reisen im Laufe des Lebens beeinflussen. Dieser Beitrag veranschaulicht, dass trotz zunehmender Ausdifferenzierung verschiedener Reiseformen dennoch gewisse Tendenzen spezifischer Reisestile nach Alter und Familienzyklus bestehen. Reisen sind Zeitinseln, um mit der Welt in ein intensiveres Austauschverhältnis zu treten. Es lässt sich der Anteil neuer Reize durch alternative Erfahrungen steigern und das eigene Zeitpensum wird positiv aufgeladen. Insofern erfährt gegenwärtig auch das Reisen bei Senior*innen, wo mehr Zeitressourcen vorhanden sind eine Renaissance erfährt und setzt sich bis ins höhere Alter als Lebenspraxis fort. Erkennbar ist jedoch, dass sich mit zunehmendem Alter der Aktionsradius wieder einschränkt und vertraute Destinationen wieder attraktiver werden.
Autorschaft im Exil zwischen Trauma und Widerstand
Authors: Gisbertz Anna-Katharina
Published: November 2020

Anna-Katharina Gisbertz geht in ihrem Beitrag vom Exil als zentraler Erfahrung des Films aus. Die Darstellung orientiert sich zum einen nah an Zweigs eigenen Äußerungen und poetischen Schriften, indem die subjektive Kamera eingesetzt wird. Sie bringt zum anderen aber auch eine Außenperspektive ein, die die Verlorenheit des Exilanten offenlegt. Durch den Wechsel der Perspektiven wirkt Schraders Film als Einladung zu einer Relektüre von Zweigs Schriften im Zeichen seiner Traumata der letzten Lebensjahre.
Data Materiality and Matters of Communication
Authors: Offenhuber Dietmar
Published: November 2020

This essay examines the gaps between data and the physical world, and how these gaps are increasingly exploited by agents of misinformation. Following Edward Tufte's dictum »above all show the data«, visualization and data analytics are often presented as emancipatory tools to separate the signal from the noise. These tools, however, are silent about how data comes into being, the material conditions and social practices of data collection. Data visualizations further decontextualize data and thus reinforce this gap between data and the material world. At the same time, a kinship exists between visualizations and traces, but how do they correspond to one another exactly? Is a bar-chart a metaphor for a stack of objects with different heights? Or are both the expression of a more fundamental sense of organization that even non-human beings can recognize? The essay examines evidentiary practices that ask such questions to identify, reveal, and interpret physical traces; making the process of data collection accountable and accessible to sensory experience.
Methoden für eine visuelle Analyse von Grafikdesign
Authors: Raff Jan-Henning
Published: November 2020

Jan-Henning Raff widmet sich in seinem Beitrag der systematischen Analyse von Grafikdesign. Dies ist ein grundlegendes Anliegen der Forschung im Kommunikationsdesign, einerseits um die Wirkung von grafischen Gestaltungen zu ermessen, andererseits um Wissen über die visuelle Wahrnehmung und den Umgang mit Grafikdesign überhaupt zu gewinnen. Die Ansätze hierzu sind verstreut in Psychologie, Kulturwissenschaften, Semiotik, Kunstgeschichte und Philosophie zu finden und bis heute nicht befriedigend für die Forschung in der visuellen Kommunikation zusammengefasst - zumal für eine systematische Vermittlung in der Lehre. Die hier vorgeschlagene Analyse schreitet vom konkreten visuellen Sinneseindruck zu zeichenvermittelten Verarbeitungsprozessen, über die sozio-kulturelle Einbettung zu den sozialen Umgangsweisen. Im Beitrag werden Untersuchungsverfahren beschrieben und exemplarische Ergebnisse diskutiert. Es wird versucht, diese Analyse selber soweit wie möglich mit visuellen Mitteln zu betreiben.
Intra-aktionsdesign
Authors: Dörrenbächer Judith , Hassenzahl Marc
Published: November 2020

Judith Dörrenbächer und Marc Hassenzahl befassen sich in ihrem Beitrag mit dem Neuen Materialismus, dessen Argumentation auch in der Designtheorie populär geworden ist. Sie diskutieren das Potenzial, aber auch die Probleme, die entstehen können, wenn das Design Konzepte dieses philosophischen Diskursfeldes aufgreift. Dörrenbächer und Hassenzahl stellen in ihrem Beitrag außerdem einen eigenen Forschungsansatz vor, der von Karen Barads Begriff der »Intra-aktion« inspiriert ist. Sie demonstrieren am Beispiel des Designs von Hörtechnologie, wie der Neue Materialismus Technikgestaltung beeinflussen kann und warum eine Gestaltungshaltung, die an wohlbefindensorientierten Aktivitäten orientiert ist, eine sinnvolle Ergänzung darstellt.
Obskure Organisationen
Authors: Gibel Roman
Published: November 2020

Die moderne Gesellschaft fordert von Organisationen zunehmend Responsivität, etwa im Bereich der Transparenz. Obskure Organisationen wie Logen, Clubs, Zünfte oder Studierendenvereine widersetzen sich jedoch anscheinend problemlos diesen gesellschaftlichen Erwartungen. Roman Gibel untersucht die besonderen Organisationsmerkmale dieser Zusammenschlüsse und zeigt, wie rigide Selektionspraktiken, Bewährungsphasen und distinkte Wertevermittlung für organisationsinternen Rückhalt sorgen - und wie Umwelterwartungen teils ignoriert und teils auf zeremonielle Art und Weise befriedigt werden. Dabei deckt er auch im Verborgenen wirksame Netzwerkeffekte in Form ökonomischer und politischer Verflechtungen auf.
Historiografie des Spektakels
Authors: Röttger Kati
Published: November 2020

Kati Röttger nimmt in ihrem Beitrag Jean-Luc Nancys Aufforderung, das Denken des »Spektakels« als solches wiederaufzunehmen zum Anlass, das Spektakel aus theaterwissenschaftlicher Perspektive einer Revision zu unterziehen. Dabei geht sie davon aus, dass das Spektakel in seiner ursprünglich lateinischen Bedeutung von spectaculum einen Gegenstandsbereich bezeichnet, der ein Kerngeschäft der Theaterwissenschaft ausmacht: Schauplatz und Schauspiel, mit besonderem Akzent auf den Raum des Sehens und Gesehen-Werdens und die Aktivität des Zuschauens (Blick). Dennoch hat die Theatergeschichtsschreibung bisher versäumt, eine Geschichte des Spektakels vorzulegen. Was also wäre naheliegender, als diesem theaterwissenschaftlichen Desiderat mit einem historiografischen Ansatz zu begegnen? Ein solcher Ansatz bietet sich auch deshalb an, weil der Spektakel-Begriff im Gegensatz zu anderen historiographischen Konzeptionen selbst in eine Geschichte der Theoretisierung und Historisierung eingebunden ist, die bis in die Antike nachzuverfolgen ist. Vor diesem Hintergrund werden im Beitrag Vorüberlegungen angestellt, die erste Konturen einer methodologischen Herangehensweise an eine Geschichtsschreibung des Spektakels umreißen. Im ersten Schritt wird die Begriffsgeschichte des Spektakels in Augenschein genommen, um möglichen historischen Umwertungen des Spektakels nachzugehen. Eine Begriffsgeschichte des Spektakels wiederum kommt nicht ohne Theoriegeschichte aus, die darüber Aufschluss geben kann, welcher ästhetische oder epistemologische Stellenwert dem Spektakel bzw. unterschiedlichen spektakulären Praktiken in bestimmten (historischen) Konstellationen der Zurschaustellung zugesprochen wurden. Schließlich wird anhand von Fallbeispielen aus der Zeit um 1800 der Vorschlag zu einer interkonnektiven Historiografie unterbreitet. Eine interkonnektive Historiografie ruft neben inter- und transmedialen Ansätzen gleichermaßen inter- und transnationale sowie inter- und transdisziplinäre Perspektiven auf, die Theater- und Operngeschichte, Kunst- und Bildgeschichte, Ästhetik- und Mediengeschichte sowie Technik- und Wissenschaftsgeschichte in einen kulturgeschichtlichen Zusammenhang bringen.
Players Unite Legally
Authors: Bisset Katharina
Published: November 2020

Virtual reality is not an anarchistic space. Laws apply here, too. When technical advancement races ahead and legislation struggles to keep up, lawyers, game-designers and players face new legal challenges. Who owns digital goods? Has the GDPR stopped online games in Europe for fear of fines? What are the copyright implications of Twitch, Walk-throughs and other player-generated content? What are the contractual problems regarding in-game-purchases? When do games become gambling?
Hauptstadtmitte als Ort nationaler Erinnerungskultur?
Authors: Girßmann Imke
Published: November 2020

Seit den 1990er Jahren wurden im neuen Regierungsviertel in Berlin eine Vielzahl von Erinnerungs- und Gedenkorten initiiert. Dabei prägten immer wieder Kämpfe um Deutungen und Räume die Prozesse. Imke Girßmann nimmt in ihrem Streifzug durch die symbolisch aufgeladene Hauptstadtmitte zwei aktuelle, aber zunächst sehr gegensätzliche Denkmalprojekte genauer in den Blick: Das Denkmal für Freiheit und Einheit und das Denkmal für die im Nationalsozialismus verfolgten Homosexuellen. In detaillierten Analysen der Diskurse und Praktiken der beteiligten Akteur*innen treten überraschende Verflechtungen zutage, die ein Begehren nach der Herstellung von Gemeinschaft und Nation offenbaren.
Performance Evaluation of a Solar PV/T Water Heater Integrated with Inorganic Salt Based Energy Storage Medium
Authors: Prakash R , Meenakshipriya B , Vijayan S , Kumaravelan R
Published: November 2020

Thermal and Electrical performance of solar PV/T hybrid water heating system using salt mixture phase change materials in storage tank is analyzed in this study. Compare to all conventional type heaters, the solar PV/T hybrid module collector has ability to produces both electrical energy from PV module and utilizes incident solar energy to heat the water. The sheet and tube type absorber is used to heat up the tube which is attached at the back side of PV module and transfer the heat to flowing water and the electrical energy is tested by connecting the DC load on the PV terminals under glazed and unglazed modes respectively. To enhance the thermal performance, energy storage medium is used as phase change materials at good proportion in the tank. The thermo physical properties of PCM are analyzed by Differential Scanning Calorimetry. This experimental testing is conducted from 8.00 to 17.00 IST in various sunny days and results are compared for glazed and unglazed conditions. The results shows that the average water temperature easily reaches 38-45°C and the final temperature of water never dropped below 34°, the temperature of PCM is 45.6oC, which is 5oC higher than outlet. The amount of heat stored using PCM in tank is 16.86% greater than no-PCM in the tank for constant 0.01 kg/s mass flow rate. The daily average electrical efficiency is 6.4% under glazed mode and 8.8% under unglazed conditions.
Identificación de los elementos necesarios para la elaboración de Cubos OLAP utilizando Microsoft Analysis Services con SQL SERVER y Excel
Authors: Murillo González Gilberto , Guzman Caraveo Zully Kristel , Mayo Herman Aguilar
Published: November 2020

El trabajo aquí presentado es resultado de una análisis comparativo de dos herramientas para la creación de un cubo OLAP, el cual es un Procesamiento Analítico en Línea, que ejecuta un análisis de datos; una de las herramientas es Microsoft Analysis Services con SQL Server y la otra Microsoft Excel; para la definición del universo de datos se utilizó una base de datos experimental obtenida de una encuesta realizada por el Instituto Nacional de Estadística y Geografía (INEGI) del año 2016; con estas herramientas existentes se busca proporcionar un análisis para el mejor uso en la explotación de datos, identificando los diversos factores necesarios para la creación, desarrollo e implementación de los cubos OLAP y entre esos se encuentran identificar alguno patrones de los riesgos o errores al ser creados por parte de algunas de estas dos soluciones existentes en el mercado, los cuales se describirán en el presente trabajo.
Embodying the Background
Authors: Paredes Veronica
Published: November 2020

In the summer of 1943, race riots stirred waves of violence across several US cities, the largest taking place in Detroit, Harlem, and Los Angeles. During wartime, patriotic anger was aimed not only outward at the Axis powers, but also inward at US citizens. This article focuses on Los Angeles’s Zoot Suit Riots, exploring how in a surprising number of accounts of the alleged riot, movie theaters serve as backgrounds alongside white, Mexican American, African American, and Asian American women, who appear as minor, nameless characters. Finding instances in work from Beatrice Griffith and Carey McWilliams, in fiction from Fernando Alegría and Chester Himes, and in the canonical Chicano films Zoot Suit (1981) and American Me (1992), the article traces the supporting roles women and movie theaters serve in these diverse narratives, and how both come to visually and discursively represent dangerous wartime boundaries.
Decreased mixed lineage leukemia 1 is involved in endometriosis-related infertility
Authors: Wen Xue , Xiong Yao , Liu Huimin , Geng Ting , Jin Ling , Zhang Ming , Ma Ling , Zhang Yuanzhen
Published: November 2020

The aberrant histone methylation patterns contribute to the pathogenesis of endometriosis (EM). Mixed lineage leukemia 1 (MLL1), a histone methyltransferase, is crucial for gene expression by catalyzing the trimethylation of histone 3 lysine 4 (H3K4me3) in gene promoter. This study aimed to explore whether MLL1 is involved in EM-related infertility. The expressions of MLL1 and H3K4me3 were analyzed in the eutopic endometria from EM women with infertility (n = 22) and the normal endometria from EM-free women (n = 22). Mouse EM model was established. The MLL1 and H3K4me3 expression patterns in mice endometria of early pregnancy were also investigated. Immortalized human endometrial stromal cells (iESCs) were cultured and underwent in vitro decidualization. The chromatin immunoprecipitation followed by deep sequencing (ChIP-seq) was performed to find the target gene of MLL1 during decidual process. Results showed that both MLL1 and H3K4me3 decreased in the eutopic endometrium from EM patients compared to that in the normal endometrium. During early pregnancy and the decidual process, MLL1 and H3K4me3 were significantly upregulated in stromal cells. ChIP-seq and ChIP-qPCR found that the cytochrome c oxidase subunit 4I 2 (COX4I2) was directly targeted by MLL1. The dominance of COX4I2-containing enzyme induced the expression of hypoxia-inducible factor-2α (HIF-2α), whose expression in the peri-implantation endometrium is essential for embryo implantation. Further results showed that MLL1 was directly regulated by progesterone (P4) – P4 receptors (PRs). Our study proved that MLL1 was involved in EM-related infertility, which may provide a novel approach to treat the nonreceptive endometrium in EM patients.
Early or delayed time-restricted feeding prevents metabolic impact of obesity in mice
Authors: Regmi Prashant , Chaudhary Rajesh , Page Amanda J , Hutchison Amy T , Vincent Andrew D , Liu Bo , Heilbronn Leonie
Published: November 2020

Time-restricted feeding (TRF) initiated early during the dark phase prevents the metabolic consequences of a high-fat diet in rodent models. However, the metabolic consequences of delaying the initiation of TRF, akin to breakfast skipping in humans, is unclear. We assigned 8-week-old male C57BL/6J mice (n = 192) to chow or high-fat diet ad libitum (AL) for 4 weeks, before randomization to continue AL or 10 h of TRF, initiated at lights off (TRFe) or 4-h after lights off (TRFd) for a further 8 weeks. Oral glucose tolerance tests (1 g/kg), metabolic monitoring and body composition by echoMRI were performed, and tissues were collected at six time points. TRF reduced weight and fat mass vs AL, with a greater reduction in TRFe vs TRFd. TRF improved glucose tolerance and protected mice from high-fat diet-induced hepatosteatosis vs AL, with no difference between TRFe and TRFd. TRF increased the amplitude of Bmal1, Cry1, Per2, Nampt, and Nocturnin mRNA levels in liver. A phase delay in Bmal1, Cry1, Per2, Reverbα, Nampt, NAD, Sirt1, and Nocturnin was observed in TRFd. Thus, delaying TRF limited the weight benefit and induced a phase delay in the hepatic clock, but improved metabolic health. Allowing more flexibility in when TRF is initiated may increase the translational potential of this dietary approach in humans.
La educación desde la perspectiva de Tomás de Aquino en el contexto de la cibercultura
Authors: García Jara Rodrigo , Pineda Edgar
Published: November 2020

En este artículo se ofrece una reflexión sobre la educación en el siglo xxi, desde la perspectiva de Tomás de Aquino. De esta manera, propicia una actualización de las cuestiones decisivas de la práctica pedagógica desde una perspectiva realista, humana y ética, basada en el ideario educativo y pedagógico de Tomás de Aquino, en el contexto de la cibercultura. Para esto, se exponen las implicaciones antropológicas, epistemológicas y axiológicas del pensamiento de Tomás de Aquino, con el fin de aplicarlas a la práctica educativa con base en el realismo pedagógico. Con esta finalidad, se optó por realizar un diseño cualitativo de corte hermenéutico, en el que se triangulan los textos de Santo Tomás frente a los textos clásicos de la cibercultura y la convergencia cibercultural. Con base en esto, se proponen algunas líneas de acción para estimular la reflexión del diseño curricular, según los conceptos de persona, verdad y virtud, propios de Santo Tomás, ampliamente emergentes en la llamada sociedad digital.
Concepción del alineamiento estratégico como principio de la gobernanza universitaria
Authors: Pérez Martínez Armenio , Rodríguez Fernández Aimara
Published: November 2020

El sistema de educación superior enfrenta nuevos retos que demandan significativos esfuerzos para garantizar su adecuado desempeño, lo que contribuye a la pertinencia social. En este contexto, la gobernanza universitaria desempeña un papel fundamental para obtener resultados superiores. Sin embargo, existen aspectos que afectan su funcionamiento desde una perspectiva sistémica. El alineamiento estratégico, como principio de gestión puesto en práctica en diferentes organizaciones, brinda una oportunidad de integración teórico-metodológica que contribuye al mejor funcionamiento del sistema de educación superior. El objetivo de este artículo de reflexión es argumentar la integración del alineamiento estratégico a la práctica de la gobernanza universitaria como un principio que garantiza la obtención de mejores resultados en beneficio de la sociedad. El paradigma metodológico utilizado es el cualitativo. La investigación es deductiva, desde una perspectiva analítica, sistémica y flexible. Los métodos utilizados son el análisis y la síntesis. Las conclusiones apuntan a la validez de la integración del alineamiento estratégico como principio de la gobernanza universitaria y la identificación de los factores de alineamiento que están presentes dentro del sistema de educación superior.
Institucionalización del aprendizaje servicio en la Facultad de Ciencias Empresariales de la Universidad del Bío-Bío: vinculando la educación superior con la comunidad local
Authors: Salazar Botello Carlos Mauricio , Muñoz Jara Yohana Andrea , Lagos Troncoso María Teresa , Arriagada Inostroza Raúl , Vallejos Cartes Rosana Lorena , Monje Sanhueza Rodrigo Javier
Published: November 2020

La metodología aprendizaje servicio ofrece innumerables oportunidades a la educación superior para reforzar el proceso enseñanza aprendizaje mediante el vínculo entre el estudiantado y la comunidad. Permite ampliar los ámbitos de referencia del trabajo docente, pasando desde la sala de clases hasta el trabajo en terreno, lo que lleva a reconocer las particularidades del entorno y descubrir las necesidades de la comunidad local. El propósito de este trabajo es describir las acciones desarrolladas por la Facultad de Ciencias Empresariales de la Universidad del Bío-Bío de Chile para la incorporación e institucionalización de la metodología aprendizaje servicio como parte del desarrollo de sus asignaturas. Los resultados indican que a la fecha han participado 901 estudiantes y 19 docentes, quienes trabajan colaborativamente con socios comunitarios en jornadas de capacitación y asesorías específicas. A la fecha se han atendido 276 socios comunitarios pertenecientes a 20 instituciones de las regiones del Biobío y de Ñuble, Chile, quienes mayoritariamente muestran alto nivel de satisfacción con las acciones desarrolladas. Esta intervención brinda la oportunidad de avanzar en el desarrollo de competencias técnicas, valores y actitudes del estudiantado y, junto con ello, lograr un mayor compromiso y aporte al desarrollo territorial de las regiones.
Propuesta de un modelo de gestión para la docencia: experiencia de una universidad estatal chilena
Authors: Villegas Villegas Francisco Javier , Valderrama Hidalgo Claudia
Published: November 2020

Este artículo problematiza un tema relevante de la educación superior que entiende la gestión de la docencia como la capacidad de abordar los requerimientos actuales de la actividad docente universitaria en un contexto profesional. Para ello, y tomando como referencia las directrices de un proyecto ministerial, se expone la propuesta realizada en una universidad estatal chilena. De acuerdo con la información disponible, los docentes inician un tránsito hacia las funciones académicas, teniendo en cuenta las orientaciones de los tres componentes de calidad: gestión curricular y desarrollo docente, trayectoria del estudiante y gestión e innovación docente. En el enfoque de referencia se describen las relaciones entre docencia universitaria, enfoque curricular y gestión de la docencia. En el abordaje metodológico se presenta una idea de integración para la actividad formativa a través del problema que se va a resolver y el procedimiento utilizado, los logros obtenidos y las enseñanzas aprendidas para la gestión de la docencia. La experiencia demuestra los resultados a través de una descripción de la propuesta basada en los dos ejemplos de casos. Con base en estos se argumenta la definición de la gestión en innovación y el aseguramiento de la calidad curricular.
Nuevos datos sobre la vida del autor de comedias Bartolomé de Mendoza
Authors: Pérez Ibáñez Ignacio
Published: November 2020

En el presente estudio damos a la luz un documento de 1582 que nos permite conocer nuevos datos sobre el autor de comedias Bartolomé de Mendoza. Se trata de un proceso que este interpuso contra Juan de Ibáñez, alcaide de las cárceles reales de Pamplona, por el pago de tres ducados por una representación que hizo en las mismas. Este documento nos proporciona interesantes datos sobre aspectos tales como la representación, el ámbito de representación, la compañía de Mendoza y la vida de los actores en el siglo xvi.
La Filosofía cortesana y el juego de la oca (I). Reglas generales
Authors: Lucero Ernesto
Published: November 2020

La Filosofía cortesana contiene las indicaciones necesarias para desarrollar una novedosa adaptación del juego de la oca a la realidad de la Corte. Alonso de Barros afronta con entera libertad las reglas originales del juego de tabla para someterlas a su intención de representar las estrategias del medro desde su ideología castellanista. Para ello mantiene la configuración esencial del tablero, que lo hace reconocible, pero desconoce, ajusta o modifica buena parte de las bases del juego.
Las letras transfronterizas. La Academia Antártica y la red de comunicación entre los poetas.
Authors: Alvarado Teodorika Tatiana
Published: November 2020

Partiendo de una breve reflexión sobre el concepto de Academia y sus avatares renacentistas, este artículo se centra sobre todo en la americana Academia Antártica, no ya como una entidad anclada en un espacio urbano en particular, concretamente Lima, como se venía pensando, sino como una idea poética cuyos miembros y máximos exponentes se encontraban a menudo separados por las enormes distancias geográficas del Reino del Perú, que lograron acortar al tejer unas solidas redes en las que se estableció una fecunda relación letrada. A partir del escrutinio de la materia preliminar y paratextual de obras contemporáneas se llega a establecer una nómina de poetas interrelacionados en sus escritos de tal manera que será en la letra impresa donde cobre especial forma y existencia la Academia. Los autores fueron de suficiente renombre para que sus versos no solo se imprimieran en la metrópoli, sino que fuesen encomiados en los escritos de plumas de la categoría de Miguel de Cervantes.
La sociabilidad reflejada a través de los discursos de la Academia de los Nocturnos (Valencia, 1591-1594)
Authors: Albert Mechthild
Published: November 2020

A través de tres discursos pronunciados en el marco de la Academia de los Nocturnos (Valencia, 1591-1594) y dedicados a aspectos socioculturales, retóricos y lingüísticos, el presente artículo pretende analizar la sociabilidad entre cortesana y urbana que caracterizaba esta institución crucial del campo literario áureo.
Un ejemplo de reelaboración de un cuento de animales en dos novelas picarescas (Alonso, mozo de muchos amos y Lazarillo de Manzanares)
Authors: Arciello Daniele
Published: November 2020

The key characteristic of Seventeenth century literature was the binding connection between oral tradition and written production. The two elements gave birth to what is currently considered as one of the most significant cultural prosperity age for Spain. Taking into account these considerations, the present article proposes to analyse the re-elaboration of a folkloric animal tale in two works attributed to the picaresque genre. After a review of the central aspects of protagonists’ personality in the novels in question, it will be highlighted each author’s personal contributions, as a result of the remodelling of the tale, subjugated to their ethic-literary intentions.
Urban Studies in Lithuania: What They Display and Conceal about Vilnius
Authors: Šarūnas Tadas
Published: November 2020

This article analyses the dominant discourses about cities in Lithuanian urban studies. Approach­ing urban processes in a different way, I suggest to study cities as a dense cluster of dwellings and consider housing as the main field (the Bourdieu’s concept) that structures the material forms of the city. In the first two sections of the article I consider the case of Vilnius and criticize the dominant natural and geopolitical categories and metaphors as limiting our understanding about urban processes. In the third part I argue how a historical genealogy of the symbolic forms of the city might reveal spatial manifestations and practices of power relations. Supplementing the genealogy of the symbolic forms with the analysis of social structures, it is possible to suggest a more relevant approach to study Lithuanian cities. Also, such an approach might facilitate productive cooperation between urban researchers working with different epistemological traditions.
INHIBITORY EFFECT OF ESSENTIAL OILS FROM SOME LAURACEAE SPECIES ON THE GROWTH OF PENICILIUM COMMUNE
Authors: Foltinová Denisa , Tančinová Dana , Císarová Miroslava
Published: November 2020

Wild garlic (Allium ursinum L.) is a member of the Allium genus. However, wild garlic is still unexplored. To date, there are few publications that deal with this Allium species. The samples of plant material were collected from the three areas near Bratislava (Bratislava region), Krajné (Trenčin region) and Becherov (Prešov region). The aim of this study was to analyse the content of total polyphenols (TPC) and the value antioxidant activity (AOA) in selected morphological parts of wild garlic. The samples of wild garlic were homogenized and a methanolic extract was prepared. These extracts were used for analyses. Total polyphenol content in the samples ranged from 253.19 ± 5.72 mg GAE.kg-1 FW (bulbs from area Becherov) to 1069.51 ± 5.49 mg GAE.kg-1 FW (leaves from area Krajne). The values of antioxidant activity were from 2.54 ± 0.83 (bulbs from area Krajne) to 47.98 ± 0.54 % inhibition (leaves from area Bratislava).
A declaração Dignitatis Humanae e o entendimento de John Finnis sobre a liberdade religiosa
Authors: Pires do Rio Laura Souza
Published: November 2020

Este artigo almeja incentivar o leitor a aprofundar sua compreensão acerca dos elementos da Lei natural presentes no pensamento de John Finnis, principalmente no que concerne ao direito humano da liberdade religiosa. Isso se deve ao fato desse autor apresentar uma perspectiva única sobre a religião, de maneira a considerá-la como um dos bens humanos fundamentais básicos. Antes de ser um direito humano protegido em tratados internacionais e nas Constituições de diversos países, a religião, de acordo com sua teoria, é um bem humano que deve ser protegido. Tal proteção é imprescindível para o cumprimento de todas as potencialidades de cada ser humano, para que seja possível atingir o seu florescimento humano e, assim também, o bem comum. Dessa forma, será discutido neste trabalho se a liberdade religiosa, sob a ótica de John Finnis, é universal e se deveria assim, ser endossada e aplicada universalmente em todo o mundo, utilizando como exemplo, o documento do Concílio do Vaticano II – Dignitatis Humanae (1965). Ainda, será realizada uma análise bibliográfica das obras desse autor que versam sobre este tema a fim de identificar quais são, e se existem, princípios da liberdade religiosa que são universalmente aplicáveis no mundo inteiro e, principalmente no Ocidente. Dessa forma, a partir da identificação desses princípios será reconhecida a relevância da proteção e incentivo ao exercício desse direito no espaço público, diante do caráter natural relativo ao bem humano da religião, tendo em vista a teoria apresentada por John Finnis.
Interest in Curriculum Subject and Self-Assessment of the Emotions: Enjoyment, Anxiety and Boredom By Students in the Lower Secondary Education
Authors: Gerdzhikova Nina
Published: November 2020

Having an interest in the matter of the educational subject is a prerequisite for experiencing positive or negative emotions. Thanks to their interest, students develop their emotional experience. On the other hand, experiencing pleasure or boredom, anxiety, they learn to distinguish the differences between the emotions in the real learning situations. Therefore, this article examines the impact of interest in a particular group of subjects on the experience of emotions with positive or negative valence. Three scales of the questionnaire created by Pekuron and collaborators were used. The results do not support the initially raised zero hypothesis.
Distribution and new records of the River Tyrannulet, Serpophaga hypoleuca P.L. Sclater & Salvin, 1866 (Passeriformes, Tyrannidae) in Colombia
Authors: Ramírez Riaño Wilmer A. , Lucena-G. Diana Alexandra , Gómez Juan Pablo , Chaparro-Herrera Sergio
Published: November 2020

Serpophaga hypoleuca P.L. Sclater & Salvin, 1866, is a bird species distributed in northern South America, where it mainly inhabits shrubs on river islands and occasionally large river shores. Its distribution is not well known in Colombia where current records show the species present south of the Amazonas department and locally in Arauca and Vichada. We present a new locality in Colombia along the Guaviare River, in San José del Guaviare, which expands the known distribution of this species in Colombia, filling an information gap for the Guaviare region.
Development and characterization of hybrid composites from sustainable green materials
Authors: Yildirim Mert , Negawo Tolera Aderie , Kilic Ali , Candan Zeki
Published: November 2020

The main objective of this study was to evaluate the dynamic mechanical thermal analysis (DMTA), mechanical, physical and wettability properties of hybrid composites developed from sustainable green materials, jute fiber and wood particles that were manufactured by using the vacuum-assisted resin transfer molding technique. The storage modulus, loss modulus and tan δ values of the hybrid composites were also determined to evaluate the DMTA performance. The results showed that the storage modulus of jute/polyester resin is superior to those of the jute–wood/polyester hybrid and wood/polyester up to the glass transition temperature (Tg). However, for temperature ranges higher than Tg, the stiffness of hybrid composites increased relatively. The Tgvalues from loss modulus and tan δ peaks support this effect of hybridization. Tests on mechanical properties showed that the jute/polyester specimens had a significant increase in tensile strength compared with the jute–wood/polyester hybrid and wood/polyester specimens. The results of tests of physical properties showed that the wood/polyester specimen had the lowest values of thickness swelling, water absorption and moisture content compared with the jute/polyester and jute–wood/polyester composites. The highest contact angle was obtained from composites made of wood/polyester. It could be concluded that the composites with enhanced performance could be used as novel green composites in various sectors.
Renal Disease Burden in Sample Countries from Five Continents
Authors: G Saadi , MS El Nahid
Published: November 2020

Background: Changes in population structure, aging pattern, and the increasing prevalence of diabetes and hypertension, are behind the increase in chronic kidney disease (CKD) prevalence and end stage renal disease (ESRD). Reliable and updated information on CKD patients and ESRD patient numbers and treatment modalities are essential to understand the real estimate of the renal disease burden in many countries. It was the aim of our study to investigate different regions of the world, as defined by world health organization (WHO): Africa, the Americas, South East Asia, Europe, East Mediterranean, and West Pacific regions, regarding many aspects of renal disease and renal replacement therapy.
A Comparison of Skin Thickness Data from Ultrasonography with Literature Data Obtained via Histology and Magnetic Resonance Imaging: Cheek, Anterior Neck, and Décolleté
Authors: P Micheels , S Besse , J Rouijel , S Viski
Published: November 2020

Introduction: Over many years now, our team has been convinced that the injection depths indicated by authors in published studies on intradermal injection therapy are incorrect. This paper sought to compare skin thickness data derived from ultrasonography with literature data obtained via histological examination and magnetic resonance imaging.
Assessment of Socio-economic Importance and Major Constraints of Working Equines in and around Debre Berhan Town, Central Ethiopia
Authors:   Guangua District Livestock Resource Development Office, Awi Zone, Northwest Ethiopia, Gelaye Abaynew , Fesseha Haben ,   Department of Veterinary Surgery and Diagnostic Imaging, School of Veterinary Medicine, Wolaita Sodo University, P. O. Box 138, Wolaita Sodo, Ethiopia
Published: November 2020

Background Equines play a crucial role in the Ethiopian economy; however, their welfare is extremely poor. Wounds, eye problems, lameness, hoof problems, parasites, and poor body condition were the most dominant welfare issues identified from different part of the country. Aim The objective of this study was to assess the socio-economic importance and constraints of equines in and around Debre Berhan town, North Shewa Zone of the Amhara region, Central Ethiopia. Material and Methods A cross-sectional questionnaire-based survey was carried from November 2016 to April 2017 and a total of 150 equine owners from the three districts namely Debre Berhan (97), Basonaworana (41), and Chacha districts (12) were interviewed during the study period. Results Accordingly, 66 (44%) and 46 (30.67%) of respondents use their equines for packing and carting. Besides, equines were also used for other social activities such as a funeral (2%), marriage (5.33%), religious ceremonies (23.33%), and mixed uses (69.34%). Diseases (46.67%), feed shortage (26%), water shortage (18%), and market unavailability of what (9.33%) were among the major constraints identified in the area. Moreover, gastrointestinal parasites (30%), back sore (16.67%), lameness (21.33%), colic (12%), and other diseases (20%) were the major health constraints of working equines in the study area. Conclusion The welfare and management of working equines in the study sites need more close attention and should be improved. Awareness creation through training in the welfare problems of equines is advantageous to fully exploit these animals.
Clinical Metritis and Endometritis in Diary Cattle: A Review
Authors:   Department of Animal Health, Awi Nationalities Administrative Zone Livestock Resource Development Office, Amhara Region, Ethiopia, Negasee Kassahun A.
Published: November 2020

Reproduction is one of the key pillars of production in many herds and individual animals. In female animals, reproduction can be affected by uterine diseases including metritis and endometritis. The objective of this review is to understand metritis and endometritis, diagnosis and treatment approaches, and the economic impact of uterine inflammations. Metritis is inflammation of the wall of the uterus, whereas endometritis is inflammation of the functional lining of the uterus, called the endometrium. Clinically, they are characterized by an enlarged uterus containing a watery red-brown fluid to viscous off-white purulent uterine discharge, which often has a fetid odor within 10 to 14-days after postpartum period in clinical metritis whereas clinical endometritis can also be observed its clinical signs after 21-days postpartum period. The risk factors for the occurrence of clinical metritis and endometritis include extrinsic factors include calving season and nutrition whereas intrinsic factors include retained fetal membrane (RFM), dystocia, metabolic disturbance, negative energy balance (NEB) and other non-specific diseases. These factors disturbing the normal physiology and weaken the immune system of dairy cattle. The factors favor the multiplication of pathogenic bacteria and cause inflammation of the uterus and results in metritis and endometritis. This result in increased conception interval increase the number of inseminations, loss of milk and meat production, marked drop in fertility and increase the cost of treatment. Clinical metritis and endometritis can be diagnosed by clinical symptoms and cytological examinations. Clinical metritis and endometritis can be treated by anti-inflammatory drugs flunixin meglumine, antibiotics (pens-trip and long-acting oxytetracycline), intrauterine infusion by using saline or iodine tincture solutions. Clinical metritis and endometritis are the most frequent uterine disorders in dairy cows causing decreased fertility leading to high economic losses. Therefore, management of these production diseases can be achieved by early diagnosis and treatment, supplementation of balanced feed containing minerals, vitamins, appropriate proteins and carbohydrates, good quality management during and after calving of the female animals.
IMPACT OF FOSSIL POWER PLANTS ON AIR QUALITY
Authors: Lawrence B.
Published: November 2020

South Africa has abundant supply of coal, about half being used in generation of electricity. Use of low grade high ash coal results in about 25% leaving boilers as PFA but ESP's lowers quantity emitted to air considerably.

Lower sulphur coal increases ash resistivity, inhibiting precipitator effectiveness. Various solutions tested by Eskom through the 80's include electrical improvements and ash modification. S03 injection equipment is effective at two Eskom stations in reducing dust emission to acceptable levels. General perception of poor dust emission is a stack that has visible emission. This could be a subjective view without real basis.

Gas emissions include vast volumes of SOX and NOx, with no steps taken to attenuate. Then is obviously a difference between high level and pound level phenomena. It was previously assumed that emission of pollutants via tall stacks above inversion layers into the jet-stream would avoid pollution problems. This does not appear in practice to have resulted, as low level haze appears to be increasing and impact of high level gas emission is now being investigated. Installation of gas removal plant may help the air quality, but may be unaffordable.

Greater demands for wealth and jobs results in greater industrialisation, with accompanying pollution products. Also, provision of living wages and housing scheme benefits has seen development of whole new black residential areas where coal is not burned, giving clean air living areas for these people and their neighbours.