La búsqueda de solución a problemas irresolubles. Enfoque de argumentación

El tema de los problemas irresolubles es enfocado particularmente a la luz de la teoría enseñanza-aprendizaje de las matemáticas. La visión del texto está enfocado en la argumen - tación, el cual propone que los problemas irresolubles generan conocimiento en matemáticas, cuando son argumentados por los estudiantes desde su irresolubilidad. En esta perspectiva, buscamos responder a la pregunta ¿Cuáles son los elementos disciplinarios de la matemática que se construyen, a través del abordaje de problemas irresolubles, con estudiantes de grados 6º a 11º, de la EPE?, esto, en una metodología de recolección de datos, categorías y análisis de los mismos. La intención del texto es, principalmente, la de servir como introducción al asunto de los problemas irresolubles con vistas a la investigación en enseñanza de las ciencias. En futuras investigaciones, es importante ampliar este campo utilizando la matematización y la modelación matemática en el caso de problemas irresolublesThe theme of unsolvable problems is focused particularly in light of the theory teaching and learning of mathematics. The vision of the text focuses on the argument, which suggests that the problems intractable generate knowledge in mathematics, when they are substantiated by students since its irresolubilidad. In this perspective, we seek to answer the question What are the elements of the mathematical discipline that are built, through addressing intractable problems, with students in grades 6 th to 11 th of the SOEs? This, in a methodology for collecting data categories and analysis. The intent of the text is mainly intended to serve as an introduction to the subject of intractable problems with a view to research in science education. In future research, it is important to expand this field using the matematizable and mathematical modelling in case of problems irresolubles.introducción the issue of the intractable problems in order to research in science educatio

Automating SLA-Driven API Development with SLA4OAI

The OpenAPI Specification (OAS) is the de facto standard to describe RESTful APIs from a functional perspective. OAS has been a success due to its simple model and the wide ecosystem of tools supporting the SLA-Driven API development lifecycle. Unfortunately, the current OAS scope ignores crucial information for an API such as its Service Level Agreement (SLA). Therefore, in terms of description and management of non-functional information, the disadvantages of not having a standard include the vendor lock-in and prevent the ecosystem to grow and handle extra functional aspects. In this paper, we present SLA4OAI, pioneering in extending OAS not only allowing the specification of SLAs, but also supporting some stages of the SLA-Driven API lifecycle with an open-source ecosystem. Finally, we validate our proposal having modeled 5488 limitations in 148 plans of 35 real-world APIs and show an initial interest from the industry with 600 and 1900 downloads and installs of the SLA Instrumentation Library and the SLA Engine.Ministerio de Economía y Competitividad TIN2015-70560-RMinisterio de Ciencia, Innovación y Universidades RTI2018-101204-B-C21Ministerio de Educación, Cultura y Deporte FPU15/0298

Fostering SLA-Driven API Specifications

Software architecture tendencies are shifting to a microservice paradigm. In this context, RESTful APIs are being established the standard of integration. API designer often identifies two key issues to be competitive in such growing market. On the one hand, the generation of accurate documentation of the behavior and capabilities of the API to promote its usage; on the other hand, the design of a pricing plan that fits into the potential API user’s needs. Besides the increasing number of API modeling alternatives is emerging, there is a lack of proposals on the definition of flexible pricing plans usually contained in the Service Level Agreements (SLAs). In this paper we propose two different modeling techniques for the description of SLA in a RESTful API context: iAgree and SLA4OAI.Ministerio de Economía y Competitividad TIN2015-70560-RJunta de Andalucía P12-TIC-1867Ministerio de Economía y Competitividad TIN2014-53986-RED

Can ecosystem properties be fully translated into service values? an economic valuation of aquatic plant services

Ecological Applications 21. 5 (2011): 3083-3103 copyright by the Ecological Society of AmericaWe carried out an integrated analysis of ecosystem services in the Doñana social-ecological system (southwestern Spain), from the providers (different aquatic plant functional groups) to the beneficiaries (different stakeholders living in or visiting the area). We explored the ecosystem services supplied by aquatic plants by linking these services to different plant functional traits, identifying relevant ecosystem services and then working our way backward to ecosystem properties and the functional traits underpinning them. We started from 15 ecosystem services associated with aquatic systems (freshwater marshes, salt marshes, ponds on aeolian sheets, temporal coastal ponds, and estuaries) and related them to plant traits (directly or indirectly through intermediate ecosystem properties). We gathered information from the literature on the functional traits of 144 plants occurring in the aquatic ecosystems of Doñana. We analyzed the species×trait matrix with multivariate classification and ordination techniques and obtained seven functional groups with different potentials for delivering ecosystem services. A survey was then administered to 477 stakeholders to analyze, through the use of a contingent valuation exercise, how the ecosystem services provided by the different functional groups were valued. We identified connections between individual plant traits, ecosystem processes, and ecosystem services, but a mismatch appeared between the functional groups and the economic values placed on them by the beneficiaries. We found that contingent valuation applied to ecosystem services tended to ignore the ecosystem properties and biodiversity underpinning them. Our results cast doubts over the suitability of the economic valuation framework of ecosystem services to capture the full value of biodiversity and ecosystems to peopleThis research was partially supported by a grant from the Madrid Regional Government of Education, which was co-funded by the Social European Fund (F.S.E.), the Spanish Ministry of Education and Science (Project CGL2006- 14121/BOS), and the Spanish Ministry of the Environment and Rural and Marine Affairs through project 018/2009. S. Díaz acknowledges support from FONCyT and CONICET (Argentina) and IAI (CRN 2015, supported by US NSF GEO- 0452325

Ecos del pasado en un colegio histórico que mira al futuro

El Colegio Nacional de Buenos Aires se prepara para celebrar el Bicentenario de la Revolución de Mayo.\nUna institución que reflejó, en sus prácticas pedagógicas, las concepciones culturales y políticas de la\ngeneración del 80 y la del Centenario

ELeCTRA: Induced Usage Limitations Calculation in RESTful APIs

As software architecture design is evolving to microservice paradigms, RESTful APIs become the building blocks of applications. In such a scenario, a growing market of APIs is proliferating and developers face the challenges to take advantage of this reality. For example, third-party APIs typically define different usage limitations depending on the purchased Service Level Agreement (SLA) and, consequently, performing a manual analysis of external APIs and their impact in a microservice architecture is a complex and tedious task. In this demonstration paper, we present ELeCTRA, a tool to automate the analysis of induced usage limitations in an API, derived from its usage of external APIs. This tool takes the structural, conversational and SLA specifications of the API, generates a visual dependency graph and translates the problem into a constraint satisfaction optimization problem (CSOP) to obtain the optimal usage limitations.Ministerio de Economía y Competitividad TIN2015-70560-RJunta de Andalucía P12–TIC–1867Ministerio de Economía y Competitividad TIN2014-53986-REDTMinisterio de Educación, Cultura y Deporte FPU15/0298

Estudio retrospectivo de neoplasias mamarias caninas diagnosticadas histopatológicamente entre los años 2013 – 2018, en las clínicas veterinarias de Pereira

En Colombia, las neoplasias de glándula mamaria se han convertido en una de las problemáticas más comunes que se presentan en las clínicas y hospitales, representando estas, aproximadamente la mitad de los casos de neoplasias presentados en los caninos hembras. Las masas, tumores o neoplasias, son un desafío de diagnóstico para los médicos veterinarios debido a su diversa etiología y a un gran número de diagnósticos diferenciales. En varias ciudades de Colombia ya se tienen conceptualizadas las neoplasias mamarias más comunes en los caninos, sin embargo, aún se desconoce un dato que indique esta información en la ciudad de Pereira. En este trabajo se realizó un estudio retrospectivo de los tipos de neoplasias mamarias que fueron caracterizadas en diferentes clínicas de la ciudad de Pereira entre los años 2013 - 2018, buscando determinar los tipos de neoplasias presentadas en dicha ciudad y predisposición por raza y edad. De las 97 perras registradas, el 24% de las neoplasias mamarias presentadas se clasificaron como fibroadenomas, seguidas del adenocarcinoma con un 20% mientras que el 48% de los pacientes no presento diagnostico histopatológico. La distribución por razas de los tumores mamarios fue 33% la raza mestiza, seguida de la raza French Poodle con un 30%. En cuanto al rango de edad, entre los 10 a 15 años se presentó el mayor número de casos de neoplasia con un 57% de los casos (55/97). Además de esto las perras no esterilizadas mostraron mayor predisposición a padecer esta patología con un 52% de los casos

Sensory processing patterns in developmental coordination disorder, attention deficit hyperactivity disorder and typical development

[Abstract] Background. Sensory processing difficulties (SPD) are present in children with Developmental Coordination Disorder (DCD) and Attention Deficit and Hyperactivity Disorder (ADHD). However, little is known about sensory processing variability in these disorders. Objective. The purpose of this study was to explore SPD among children with DCD, ADHD and co-occurring symptoms in comparison to children with typical development (TD) and to determine how potential social confounders may influence these associations. Methods. The study involved 452 children aged 6–12 years. The Short Sensory Profile-2 was used to assess sensory processing patterns. Multiple linear regressions were utilized to investigate the relationship between DCD, ADHD and co-occurring symptoms and sensory processing patterns, adjusting for social covariates. Results. Children with DCD and ADHD symptoms showed greater variability of atypical sensory processing patterns compared with TD children. Low registration and sensory sensibility issues were more prevalent in the DCD group. ADHD children showed higher rates of low registration, sensory sensibility and sensory seeking, and all children in the co-occurring symptoms group presented sensory sensibility. Conclusion. This study reports significant variability in sensory processing among children with DCD, ADHD and co-occurring symptoms using a population-based sample. These differences can contribute to understand how neurological and social factors correlates across diagnoses.Xunta de Galicia; ED481A-2018/15

Prevalence of suspected developmental coordination disorder and associated factors in Spanish classrooms

[Abstract] BACKGROUND: Developmental Coordination Disorder (DCD) is a multifactorial, neurodevelopmental motor disorder that severely affects the activities of a child's daily life and classroom performance. The aim of this study was to determine the prevalence of suspected DCD in a sample of Spanish schoolchildren and its association with socio-demographic factors. METHODS: We conducted a cross-sectional study including a random sample of 460 children attending mainstream schools in northwest Spain in 2017. A Developmental Coordination Disorder Questionnaire-European Spanish was used to evaluate suspected DCD prevalence. We performed multivariate logistic and linear regression analysis to determine the socio-demographic variables associated with suspected DCD and problematic motor coordination performance. RESULTS: The prevalence of suspected DCD was 12.2%. According to the multivariate analysis, DCD symptoms were significantly associated with males (OR = 3.0), ages above 10 years old (OR = 5.0) and low participation in out-of-school physical activities (OR = 2.3). Preterm birth children were twice as likely to show suspected DCD, although this association was not statistically significant (OR = 2.1). CONCLUSIONS: A high percentage of Spanish schoolchildren are at risk for developing DCD. There is a strong connection between suspected DCD and socio-demographic factors. Protocols aimed to detect DCD and intervention programmes in classrooms designed to promote motor coordination skills need to take these factors into consideration