Procesos de comunicación en la modelación matemática escolar

RESUMEN: Se presentan los avances de una investigación que analiza las dimensiones de la comunicología (expresión, difusión, interacción, estructuración y observación) y los procesos de comunicación de la teoría de sistemas de Niklas Luhmann (autorreferencialidad, autopoiesis e interpenetración) que se involucran en actividades de modelación matemática. La investigación se desarrolla bajo un enfoque cualitativo a partir de un estudio de caso en el que participan seis estudiantes de grado noveno (13-15 años). Los datos se vienen obteniendo a través grabaciones de audio y video además de documentos escritos producidos por los participantes. La investigación permite observar la comunicación como un sistema autopoiético, que se genera a través de distinciones que conllevan por medio de la toma de decisiones a la acción y de nuevo a la comunicación

PROPUESTA DE INTERVENCIÓN PSICOSOCIAL EN LAS PRÁCTICAS PARENTALES CON ESCOLARES ADOLESCENTES Y SU RELACIÓN CON LA SINTOMATOLOGÍA DEPRESIVA

This work is part of the research, theoretical and practical results of family studies at the Chair for the Study of Integral Training of Students of the University of the East, in collaboration with academic bodies of several universities in Mexico on the Net Research "Family and Human Development". psychosocial intervention in parenting practices of parents of teenagers as a process of social transformation that aims to promote self-management in identifying and solving their needs are considered, emphasizing the need to co-manage the formation of their daughters and children, on the basis of a critical engagement that strengthens the sense of belonging, identity, and the establishment of a social commitment. This proposal will sensitize parents to the care of adolescents in relation to the prevention or the presence of depressive symptoms, through the implementation of a program in which different techniques and procedures and validated by the group are used research.  El presente trabajo es parte de los resultados investigativos, teóricos y prácticos de los estudios de familia, en la Cátedra de Estudios de la Formación Integral de los Estudiantes de la Universidad de Oriente, en colaboración con cuerpos académicos de varias universidades de México en la Red de Investigación “Familia y Desarrollo Humano”. Se considera la intervención psicosocial en las prácticas parentales de madres y padres de adolescentes como un proceso de transformación social que apunta a la promoción de la autogestión en la determinación y solución de sus necesidades, enfatizando en la necesidad de cogestionar la formación de sus hijas e hijos, sobre la base de una participación crítica que fortalece el sentido de pertenencia, identidad, así como el establecimiento de un compromiso social. Esta propuesta va sensibilizando a padres y madres con la atención a los y las adolescentes en relación con la prevención o la presencia de sintomatología depresiva, a través de la aplicación de un programa en el que se utilizan diferentes técnicas y procedimientos ya validadas por el grupo de investigación

Management of Duodenal Injuries

The duodenum is mostly a retroperitoneal structure, composed by 4 segments (D1-D4) and surrounded by other vital organs like pancreas or great vessels. Injuries to this organ are rare and difficult to diagnose, with an incidence of 1–5% in cases of abdominal trauma. The most common causes of duodenal injuries are gunshot wounds and stabbing. Duodenal injuries are often associated with other organ injuries, thus delaying diagnosis in some cases and increasing the risk of complications. When diagnosed at optimum timing, it can be treated with relatively low mortality rates. Great number of repair techniques exist and the treatment of choice depends on the surgeon’s experience and hemodynamic stability of the patient, with the goal of preserving life and preventing a major complication such as leak or fistula. Outcomes are good, and the prognosis is tightly ligated to associated injuries, thus high index of suspicion and applying ATLS and surgery trauma principles are essential

Conoces tu color : Parte 3

La secretaría de Extensión de la Universidad Nacional de La Plata en el marco de la convocatoria de proyectos 2019, acreditó el proyecto multidisciplinario Conoces tu color 2, en el cual participan diferentes Unidades Académicas: Facultad de Odontología, Bellas Artes, Ciencias Exactas y Ciencias Naturales, dependientes de la Universidad Nacional de La Plata. Docentes y alumnos de dichas facultades intervinimos con distintas acciones en el proyecto, el cuál tuvimos que adaptar, teniendo en cuenta el contexto de pandemia, contemplando que el cambio de rutinas y comportamientos diarios afecta la salud de la población, consideramos como herramienta eficaz promover la educación para la salud, priorizando incorporar hábitos saludables en el cuidado bucodental; en momentos de pandemia cuidar la salud oral es una prioridad ya que una de las principales vías de entrada del SARS –COV2 es la vía oral. Las familias pertenecientes a los sectores más vulnerables de la sociedad presentan gran cantidad de lesiones bucodentales producidas por una dieta alta en hidratos de carbono, ausencia de higiene oral, inicio tardío del cepillado dental o escasa frecuencia del mismo.Facultad de Odontologí

Antimicrobial resistance among migrants in Europe: a systematic review and meta-analysis

BACKGROUND: Rates of antimicrobial resistance (AMR) are rising globally and there is concern that increased migration is contributing to the burden of antibiotic resistance in Europe. However, the effect of migration on the burden of AMR in Europe has not yet been comprehensively examined. Therefore, we did a systematic review and meta-analysis to identify and synthesise data for AMR carriage or infection in migrants to Europe to examine differences in patterns of AMR across migrant groups and in different settings. METHODS: For this systematic review and meta-analysis, we searched MEDLINE, Embase, PubMed, and Scopus with no language restrictions from Jan 1, 2000, to Jan 18, 2017, for primary data from observational studies reporting antibacterial resistance in common bacterial pathogens among migrants to 21 European Union-15 and European Economic Area countries. To be eligible for inclusion, studies had to report data on carriage or infection with laboratory-confirmed antibiotic-resistant organisms in migrant populations. We extracted data from eligible studies and assessed quality using piloted, standardised forms. We did not examine drug resistance in tuberculosis and excluded articles solely reporting on this parameter. We also excluded articles in which migrant status was determined by ethnicity, country of birth of participants' parents, or was not defined, and articles in which data were not disaggregated by migrant status. Outcomes were carriage of or infection with antibiotic-resistant organisms. We used random-effects models to calculate the pooled prevalence of each outcome. The study protocol is registered with PROSPERO, number CRD42016043681. FINDINGS: We identified 2274 articles, of which 23 observational studies reporting on antibiotic resistance in 2319 migrants were included. The pooled prevalence of any AMR carriage or AMR infection in migrants was 25·4% (95% CI 19·1-31·8; I2 =98%), including meticillin-resistant Staphylococcus aureus (7·8%, 4·8-10·7; I2 =92%) and antibiotic-resistant Gram-negative bacteria (27·2%, 17·6-36·8; I2 =94%). The pooled prevalence of any AMR carriage or infection was higher in refugees and asylum seekers (33·0%, 18·3-47·6; I2 =98%) than in other migrant groups (6·6%, 1·8-11·3; I2 =92%). The pooled prevalence of antibiotic-resistant organisms was slightly higher in high-migrant community settings (33·1%, 11·1-55·1; I2 =96%) than in migrants in hospitals (24·3%, 16·1-32·6; I2 =98%). We did not find evidence of high rates of transmission of AMR from migrant to host populations. INTERPRETATION: Migrants are exposed to conditions favouring the emergence of drug resistance during transit and in host countries in Europe. Increased antibiotic resistance among refugees and asylum seekers and in high-migrant community settings (such as refugee camps and detention facilities) highlights the need for improved living conditions, access to health care, and initiatives to facilitate detection of and appropriate high-quality treatment for antibiotic-resistant infections during transit and in host countries. Protocols for the prevention and control of infection and for antibiotic surveillance need to be integrated in all aspects of health care, which should be accessible for all migrant groups, and should target determinants of AMR before, during, and after migration. FUNDING: UK National Institute for Health Research Imperial Biomedical Research Centre, Imperial College Healthcare Charity, the Wellcome Trust, and UK National Institute for Health Research Health Protection Research Unit in Healthcare-associated Infections and Antimictobial Resistance at Imperial College London

Consenso colombiano para el manejo de pacientes con Hipofosfatasia

La hipofosfatasia (HPP) es una enfermedad metabólica, de tipo hereditario, causada por mutaciones en el gen ALPL. Teniendo en cuenta los retos del manejo adecuado de los pacientes con HPP, se realizó un consenso interdisciplinario de expertos (endocrocrinólogos pediatras, nefrólogos pediatras, ortopedistas infantiles y genetistas clínicos) con el fin de proponer recomendaciones de utilidad clínica para el diagnóstico, tratamiento y seguimiento de los pacientes colombianos con HPP. Estas sugerencias se realizan en el contexto de los diferentes tipos de presentaciones y las edades de los pacientes.Q41-7Hypophosphatasia (HPP) is a hereditary metabolic disease caused by mutations in the ALPL gene. Taking into account the challenges found in the adequate management of patients with HPP, an interdisciplinary consensus of experts (pediatric endocrinologists, pediatric nephrologists, pediatric orthopedists and clinical geneticists) was carried out, in order to propose recommendations of clinical utility for the diagnosis, treatment and follow-up of Colombian patients with HPP. These suggestions are made in the context of the different types of presentations and the ages of the patients

Evenness mediates the global relationship between forest productivity and richness

1. Biodiversity is an important component of natural ecosystems, with higher species richness often correlating with an increase in ecosystem productivity. Yet, this relationship varies substantially across environments, typically becoming less pronounced at high levels of species richness. However, species richness alone cannot reflect all important properties of a community, including community evenness, which may mediate the relationship between biodiversity and productivity. If the evenness of a community correlates negatively with richness across forests globally, then a greater number of species may not always increase overall diversity and productivity of the system. Theoretical work and local empirical studies have shown that the effect of evenness on ecosystem functioning may be especially strong at high richness levels, yet the consistency of this remains untested at a global scale. 2. Here, we used a dataset of forests from across the globe, which includes composition, biomass accumulation and net primary productivity, to explore whether productivity correlates with community evenness and richness in a way that evenness appears to buffer the effect of richness. Specifically, we evaluated whether low levels of evenness in speciose communities correlate with the attenuation of the richness–productivity relationship. 3. We found that tree species richness and evenness are negatively correlated across forests globally, with highly speciose forests typically comprising a few dominant and many rare species. Furthermore, we found that the correlation between diversity and productivity changes with evenness: at low richness, uneven communities are more productive, while at high richness, even communities are more productive. 4. Synthesis. Collectively, these results demonstrate that evenness is an integral component of the relationship between biodiversity and productivity, and that the attenuating effect of richness on forest productivity might be partly explained by low evenness in speciose communities. Productivity generally increases with species richness, until reduced evenness limits the overall increases in community diversity. Our research suggests that evenness is a fundamental component of biodiversity–ecosystem function relationships, and is of critical importance for guiding conservation and sustainable ecosystem management decisions

Native diversity buffers against severity of non-native tree invasions

Determining the drivers of non-native plant invasions is critical for managing native ecosystems and limiting the spread of invasive species$^{1,2}$. Tree invasions in particular have been relatively overlooked, even though they have the potential to transform ecosystems and economies$^{3,4}$. Here, leveraging global tree databases$^{5,6,7}$, we explore how the phylogenetic and functional diversity of native tree communities, human pressure and the environment influence the establishment of non-native tree species and the subsequent invasion severity. We find that anthropogenic factors are key to predicting whether a location is invaded, but that invasion severity is underpinned by native diversity, with higher diversity predicting lower invasion severity. Temperature and precipitation emerge as strong predictors of invasion strategy, with non-native species invading successfully when they are similar to the native community in cold or dry extremes. Yet, despite the influence of these ecological forces in determining invasion strategy, we find evidence that these patterns can be obscured by human activity, with lower ecological signal in areas with higher proximity to shipping ports. Our global perspective of non-native tree invasion highlights that human drivers influence non-native tree presence, and that native phylogenetic and functional diversity have a critical role in the establishment and spread of subsequent invasions

The global biogeography of tree leaf form and habit

Understanding what controls global leaf type variation in trees is crucial for comprehending their role in terrestrial ecosystems, including carbon, water and nutrient dynamics. Yet our understanding of the factors influencing forest leaf types remains incomplete, leaving us uncertain about the global proportions of needle-leaved, broadleaved, evergreen and deciduous trees. To address these gaps, we conducted a global, ground-sourced assessment of forest leaf-type variation by integrating forest inventory data with comprehensive leaf form (broadleaf vs needle-leaf) and habit (evergreen vs deciduous) records. We found that global variation in leaf habit is primarily driven by isothermality and soil characteristics, while leaf form is predominantly driven by temperature. Given these relationships, we estimate that 38% of global tree individuals are needle-leaved evergreen, 29% are broadleaved evergreen, 27% are broadleaved deciduous and 5% are needle-leaved deciduous. The aboveground biomass distribution among these tree types is approximately 21% (126.4 Gt), 54% (335.7 Gt), 22% (136.2 Gt) and 3% (18.7 Gt), respectively. We further project that, depending on future emissions pathways, 17-34% of forested areas will experience climate conditions by the end of the century that currently support a different forest type, highlighting the intensification of climatic stress on existing forests. By quantifying the distribution of tree leaf types and their corresponding biomass, and identifying regions where climate change will exert greatest pressure on current leaf types, our results can help improve predictions of future terrestrial ecosystem functioning and carbon cycling