Effects of Running up the Score in Sport

This synthesis highlights the effects of running up the score in sport. To examine this matter to the fullest extent, there were seven peer-reviewed articles chosen that involved the ethics of running up the score and several arguments for and against the issue. Several topics included in the articles were the anti-blowout thesis, humiliation, sportsmanship and competition. The review of literature provides information, and conclusions that support the idea that running up the score may be ethical or unethical depending on the circumstances of the game

(2,3)-Cordial Digraphs

This presentation is about graphs (the vertex-edge kind, not the y = f(x) kind). A graph is a mathematical object that represents objects and some relationship among them; the objects are represented by vertices and the relationships are represented by the edges. Graphs have applications in just about every field imaginable, including artificial intelligence, social network theory, and parallel computing theory. A directed graph is a type of graph used to represent relationships that are one-sided or not symmetric. We discuss a graph labeling scheme on directed graphs introduced by LeRoy Beasley called a (2,3)-cordial labeling. In such a labeling, the vertex set of a directed graph is partitioned into two equally sized subsets by labeling half of vertices 0 and the other half 1; edges of the directed graph receive a label according to their direction and affiliated vertex labels such that the edge set is partitioned into three equally sized subsets in accord with whether their labels are 1, 0, or -1. Although not every directed graph can be labeled in accord with the (2,3)-cordial scheme, we discuss properties that indicate when a directed graph can be so labeled as well as applications of (2,3)-cordial labeling. In particular, we present results on the existence of (2,3)-cordial labelings on oriented hypercubes, trees,and tournaments.https://digitalcommons.usu.edu/fsrs2020/1059/thumbnail.jp

Multifunctional enzymatically generated hydrogels for chronic wound application

The healing of chronic wounds requires intensive medical intervention at huge healthcare costs. Dressing materials should consider the multifactorial nature of these wounds comprising deleterious proteolytic and oxidative enzymes and high bacterial load. In this work, multifunctional hydrogels for chronic wound application were produced by enzymatic cross- linking of thiolated chitosan and gallic acid. The hydrogels combine several beneficial to wound healing properties, controlling the matrix metalloproteinases (MMPs) and myeloperoxidase (MPO) activities, oxidative stress, and bacterial contamination. In vitro studies revealed above 90% antioxidant activity, and MPO and collagenase inhibition by up to 98 and 23%, respectively. Ex vivo studies with venous leg ulcer exudates confirmed the inhibitory capacity of the dressings against MPO and MMPs. Additionally, the hydrogels reduced the population of the most frequently encountered in nonhealing wounds bacterial strains. The stable at physiological conditions and resistant to lysozyme degradation hydrogels showed high biocompatibility with human skin fibroblastsPeer ReviewedPostprint (author's final draft

Notes for the analysis and interpretation of archeological contexts with human bone remains

Los contextos funerarios representan una realidad arqueológica con enorme significación social para profundizar en el conocimiento de las sociedades pasadas. Estas realidades arqueológicas materializan un conjunto de prácticas y concepciones culturales que desarrollan y fortalecen identida- des, memorias colectivas y relaciones sociales. Pero también son utilizadas para distorsionar o invertir la realidad social como reflejo de diferentes actitudes hacia la muerte o en beneficio de ciertos grupos de interés. Este artículo reflexiona sobre el análisis e interpretación de contextos arqueológicos donde aparecen restos esqueléticos humanos, con especial consideración de los depósitos funerarios, y uti- lizando la base teórico-metodológica que proporciona la tafonomía funeraria. Esta disciplina intenta identificar y explicar las prácticas antrópicas y los procesos naturales que intervinieron en la formación de los contextos arqueológicos con restos óseos humanos. Dada la complejidad de los depósitos funera- rios, se precisa generar información contextual de alta resolución como base para establecer diferentes hipótesis interpretativas. La tafonomía funeraria integra distintas líneas de evidencia que contribuyen significativamente al desarrollo de estas hipótesis.Burials are archaeological deposits with enormous social significance to provide insights into the past societies. Funerary deposits reveal a set of cultural practices and conceptions that develop and strengthen identities, collective memories and social relationships. But they are also manipulated to distort or invert social reality as a reflection of different attitudes towards death or for the benefit of certain social groups. This article reflects on the analysis and interpretation of archaeological contexts where human skeletal remains appear, with special consideration of funerary deposits, and using the theoretical-methodological basis provided by funerary taphonomy. This discipline attempts to identify and explain the anthropogenic and natural processes that occurred during the formation of archaeolo- gical contexts with human skeletal remains. Given the complexity of funerary deposits, it is necessary to generate high resolution contextual information as a basis for establishing different interpretative hypotheses. Funeral taphonomy integrates different lines of evidence that contribute significantly to the development of these hypotheses

Reactivación de brigadas de emergencia en la empresa Quimpac SA

El presente trabajo de suficiencia profesional tiene como objetivo de presentar el desarrollo de la reactivación de las Brigadas de emergencia de Quimpac SA., tiene como objetivo principal la reactivar a las brigadas de emergencia que son: Lucha contra incendio, Evacuación, Primeros auxilios y Materiales peligrosos, para mejorar la calidad de atención y reducir los tiempos de reacción ante cualquier evento. Se pudo identificar los problemas que tenía la Brigada de Emergencia, por los cuales se plantearon planes de acción y se procedió a reactivar a las Brigadas de Emergencia, aumentando su compromiso y eficacia Se demostró que, mejorando calidad de atención ante una emergencia, con personal calificado y reconocido, se reducirá la gravedad de la emergencia y reducirá la accidentabilidad y severidad por este tipo de evento. A partir del trabajo realizado, se concluye que la reactivación de las Brigadas de emergencia, Beneficio a la empresa y en la reducción de accidentes y disminución de gravedad de las emergencias, por la mejor calidad de atención

Effect of the viscosity ratio on the PLA/PA10.10 bioblends morphology and mechanical properties

PLA bio-blends with a predominantly biosourced PA10.10 in the composition range 10-50wt.% were prepared by melt blending in order to overcome the advanced brittleness of PLA. Due to the inherent immiscibility of the blends, 30 wt.% of PA was needed to achieve a brittle-to-ductile transition and a co-continuous morphology was predicted at 58 wt.% of PA. The initial enhancement of the PLA rheological behaviour through the environmentally friendly reactive extrusion process yielded a finer and more homogeneous microstructure and hence enhanced the mechanical properties of the bio-blends at much lower PA contents. The brittle-to-ductile transition could be achieved with only 10 wt.% and co-continuity was observed already at 44 wt.% of PA. Results indicate the significant potential of modifying PLA flow behaviour as a promising green manufacturing method toward expanding PLA-based bio-blends applications.Peer ReviewedPostprint (published version

Valoración de la incidencia del ambiente escolar en el proceso enseñanza – aprendizaje de la modalidad de educación primaria en el turno matutino del Colegio Público Salomón Ibarra Mayorga del distrito cinco del municipio de Managua durante el II semestre del año escolar 2017

La presente investigación trata de valorar la incidencia del ambiente escolar en el proceso enseñanza – aprendizaje de la modalidad de educación primaria en el turno matutino del Colegio Público Salomón Ibarra Mayorga del distrito cinco del municipio de Managua durante el II semestre del año escolar 2017. Con este estudio se pretende describir las condiciones del ambiente escolar de la modalidad de educación primaria para el proceso enseñanza-aprendizaje, así como también identificar las principales fortalezas y debilidades del ambiente escolar de esta modalidad y a su vez determinar el efecto del ambiente escolar de este centro en el proceso enseñanza-aprendizaje. La metodología utilizada es de tipo cualitativa que enmarca la descripción del escenario sujeto a investigación en el proceso enseñanza – aprendizaje, se presenta comentario de los actores participantes, así como el análisis y triangulación de datos obtenidos. En este estudio se contó con una muestra por voluntariedad de 14 estudiantes de 7mo grado que como requisito hubiesen estudiado toda su primaria en este centro de estudio, considerando que sus aportes serían más sustancial y completos, se contó con la colaboración de 12 docentes que de forma voluntaria respondieran a las interrogantes, la directora fue considerada por ser un informante clave e indispensable para este estudio, finalmente se consultaron a padres de familia bajo el criterio de accesibilidad dentro del tiempo que destinan para asistir al centro. Las técnicas utilizadas en la recolección de la información fueron análisis documental, entrevista a docentes, estudiantes, padres de familias y director del centro, más una guía de observación no participativa. Entre los resultados con más relevancia encontramos insatisfacción de los docentes, estudiantes y padres de familias por las carencias que tiene el centro en cuanto a su 8 infraestructura o condiciones físicas, escases de material didáctico en el desarrollo de las clases por no contar con suficientes recursos para la elaboración de los mismos, rechazo por la comunidad educativa del lugar donde se encuentra ubicado el centro de estudio por encontrarse cercano a un cauce. Sumado a esto la presencia de grupos delincuenciales que crean inseguridad y temor a la comunidad. Las principales recomendaciones que se sugieren está gestionar antes las autoridades correspondientes el reemplazo total de las aulas y sanitarios que fungen como espacios para la acción del proceso enseñanza – aprendizaje. Concientizar a la comunidad en general en evitar y eliminar los cúmulos de basuras que se forman a orillas del cauce que genera condiciones de contaminación e insalubridad para el centro de estudio. Palabras claves: Ambiente escolar, proceso de enseñanza – aprendizaje, educación primaria

PLA/PA bio-blends: induced morphology by extrusion

The effect of processing conditions on the final morphology of Poly(Lactic Acid) (PLA) with bio-based Polyamide 10.10 (PA) 70/30 blends is analyzed in this paper. Two types of PLA were used: Commercial (neat PLA) and a rheologically modified PLA (PLAREx), with higher melt elasticity produced by reactive extrusion. To evaluate the ability of in situ micro-fibrillation (µf) of PA phase during blend compounding by twin-screw extrusion, two processing parameters were varied: (i) Screw speed rotation (rpm); and (ii) take-up velocity, to induce a hot stretching with different Draw Ratios (DR). The potential ability of PA-µf in both bio-blends was evaluated by the viscosity (p) and elasticity (k’) ratios determined from the rheological tests of pristine polymers. When PLAREx was used, the requirements for PA-µf was fulfilled in the shear rate range observed at the extrusion die. Scanning electron microscopy (SEM) observations revealed that, unlike neat PLA, PLAREx promoted PA-µf without hot stretching and the aspect ratio increased as DR increased. For neat PLA-based blends, PA-µf was promoted during the hot stretching stage. DMTA analysis revealed that the use of PLAREx PLAREx resulted in a better mechanical performance in the rubbery region (T > Tg PLA-phase) due to the PA-µf morphology obtained.Peer ReviewedPostprint (published version

Exploring the risks accompanying child-bearing in aboriginal society on Gran Canaria (Canary Islands, 13th–15th cal. CE): death of a pregnant woman during her third trimester

In the pre-Hispanic necropolis of Juan Primo, northwest Gran Canaria (Canary Islands, Spain) a grave was found containing a 20–25 year-old woman with a foetus in her abdominal region, whose age at death was estimated at 33–35 weeks of gestation. The purpose of this study is to discuss the possible cause of death of the woman and foetus. Skeletons of both individuals were well preserved, permitting a good record of the bones found in the burial, which is compatible with a pregnancy at preterm. The age of the foetus and the position of the left upper limb raise the possibility that their death was the result of a difficult birth (dystocia). However, a number of alternative disorders can be put forward to explain this death in the third trimester of pregnancy, such as eclampsia and abruption placentae. In this case, pertinent ethnohistorical and osteoarchaeological information about the ancient canaries allows us to assess some of the stressors that would increase their maternal mortality. The lack of similar evidence in archaeological contexts makes this an important finding, providing a likely case of obstetric problems and their impact on pre-industrial societies

(2,3)-Cordial Oriented Hypercubes

L. B. Beasley recently defined a digraph labeling called (2,3)-cordial. Digraphs for which a (2,3)-cordial labeling can be applied are called (2,3)-cordial digraphs. Herein, we consider the existence and identification of (2,3)-cordial oriented hypercubes. We demonstrate that for every nonzero dimension, there exists a (2,3)-cordial oriented hypercube. Additionally, we demonstrate that not all oriented hypercubes of nonzero dimension are (2,3)-cordial. Finally, we present preliminary results regarding the identification of (2,3)-cordial oriented hypercubes, particularly for dimension 3.Comment: 14 pages, 6 figure