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Realidades de los/as productores/as del cordón hortícola platense
Get PDFEl siguiente artículo forma parte del proceso de investigación llevado a cabo en el marco de la Beca de Investigación Doctoral de la Comisión de Investigaciones Científicas CIC de la provincia de Buenos Aires. Este artículo busca problematizar algunas situaciones críticas por las que están atravesando los/as pequeños/as productores/as que trabajan y viven en el cordón hortícola platense. El problema de la tierra en la Argentina y en América Latina ha sido un problema estructural en la región y se ha profundizado con la reedición del sistema neoliberal. En Argentina específicamente la situación de precariedad para los/as pequeños productores se ha venido profundizando desde el año 2016 con la eliminación de la Secretaria de Agricultura Familiar, el Monotributo Social Agropecuario (MSA), el RENATEA entre otros tantos organismos e instituciones que promovían la agricultura familiar. Estos/as trabajadores/as sufren a su vez un doble proceso de exclusión, ya que en su mayoría son migrantes limítrofes y algunos/as de ellos/as desconocen sus derechos como migrantes
Niños y niñas en prisión, crianza y derechos humanos: estudio en un penal de mujeres de la provincia de Buenos Aires (Argentina)
Get PDFEn la Argentina, la legislación permite a las madres presas convivir con sus hijos/as hasta los 4 años de edad. La problemática derivada de la falta de contención de los niños/as por parte de familiares u otros actores, se resuelve a través de la privación de su libertad, argumentando que el contacto con la madre en los primeros años resulta fundamental para el desarrollo infantil. Si bien abunda información sobre el impacto de factores ambientales en el crecimiento y desarrollo infantil, especialmente los relativos a los contextos de pobreza, no ocurre lo mismo a la hora de conocer los efectos de otros contextos como son los carcelarios. En estos lugares las poblaciones que albergan, están sujetas a las condiciones de las denominadas “instituciones totales” (Goffman, 1972). La vida de niños/as en tales condiciones genera múltiples cuestionamientos, más allá de los sustantivos, referidos a la pertinencia y a la ética de la situación carcelaria en los niños/as. Con base en estos reconocimientos, y poniendo en tensión los derechos del niño/a con los dispositivos punitivos de control social, presentamos los resultados de un estudio llevado a cabo a fines de 2016 en la Unidad Penitenciaria Nº 33 (La Plata, Buenos Aires, Argentina), cuyos objetivos fueron conocer y analizar la crianza en tal contexto, recuperando las percepciones de sus madres y de otros agentes que intervienen en el cuidado de los niños/as dentro del penal.In Argentina, legislation allows imprisoned mothers to live with their children up to theirs 4 years of age. Problems derived from the lack of care of children by relatives or other actors, is resolved through the privacy of their freedom, arguing that contact with the mother in the early years is essential for child development. While information on the impact of environmental factors on child growth and development abounds, especially those related to poverty, the same does not occur when it comes to knowing the effects of other contexts such as prison. In these places population are subject to conditions of the so-called total institutions (Goffman, 1972). Life of children there generates multiple questions, beyond the substantive associated to the rightness and ethics of prison living conditions on children. Based on these recognitions, and setting the child's rights in tension with the punitive devices of social control, we present the results of the study carried out in 2016 in the Penitentiary Unit 33 (La Plata, Buenos Aires, Argentina), whose objectives were to know and analyze the upbringing in that context, recovering the perceptions of their mothers and other agents involved in the care of children within prison
Characterization of biodegradable/non-compostable films made from cellulose acetate/corn starch blends processed under reactive extrusion conditions
Get PDFThe manufacture of food packaging materials from food hydrocolloids has been widely studied during the last decades and multiple alternatives have been investigated, with research mainly focusing on improving the physicochemical and mechanical properties of the different materials. Processing food hydrocolloids by reactive extrusion (REx) for the development of food packaging has, however, been poorly studied. Four film systems were prepared from corn (Zea mays) thermoplastic starch (TPS) containing either cellulose acetate (C) or chromium octanoate (Cat - a potential food grade catalyst), or a blend of both (C + Cat). Processing was done under REx conditions using a twin-screw extruder. An exhaustive study of the resulting materials was carried out in terms of the structural, physicochemical, thermal, surface, mechanical and compostable properties related to their potential use in food packaging applications. The most hydrophobic material was the C-containing film.
However, this physicochemical behavior was different on the film surface, thus suggesting molecular rearrangements within the material. The Cat-containing films were darker than the other materials. The mechanical behavior observed in the Cat-containing films was particularly interesting as it suggests that these film systems could be used as shape memory materials for food packaging applications, as long as the following mechanical conditions are not exceeded: 5.02% strain and 0.43 MPa stress. All the films tested were biodegradable. We confirmed that Cat-containing film systems produced non-compostable materials at high concentrations (1 mg/mL), as measured by its effect on lettuce seedlings. This confirms that biodegradable materials are not necessarily compostable
Encuentro de saberes para la gestión responsable de ecosistemas acuáticos pampeanos
Get PDFEl presente libro digital intenta transformarse en un espacio de consulta y referencia para aquellos interesados en algunos de los temas abordados en el X Congreso de Ecología y Manejo de Ecosistemas Acuáticos Pampeanos. Su libre disponibilidad en la web facilita el acceso y posibilita mayor visibilidad. El lema convocante fue Encuentro de Saberes para la gestión responsable que se expresa en cada una de las páginas que conforman esta memoria
Using bacteriophages against Paenibacillus larvae for the prevention and treatment of American Foulbrood disease in honeybee colonies
Get PDFAmerican Foulbrood (AFB) of honey bees is the most contagious and destructive infectious disease affecting the larval and pupal stages of honey bees (Apis mellifera) and other Apis species. The causative agent, Paenibacillus larvae, is a Gram-positive bacterium that can produce over one billion spores in each infected larva. AFB occurs throughout the world and leads to considerable losses in apiculture and pollination. The disease is classified within the World Organization for Animal Health (OIE) list and considered to be of socio-economic impact and significance in the international trade of bees and bee products.
Only bacterial spores are capable of inducing the infection. Spores can remain viable in comb and woodenware for decades and survive adverse conditions (desiccation, high temperatures, ultraviolet light exposure) and contact with standard disinfectants. The spread of the disease is facilitated by regular beekeeping practices, including exchanging hive components between colonies, maintaining many hives in a confined area, and trading queens, package bees and honey
An end-user pipeline for scrapping and visualizing semi-structured data over the Web
Get PDFThe Web is a vast source of semi-structured data sets that are made readily available to support the construction of new knowledge. Information visualization techniques have been demonstrated a suitable alternative for allowing users to analyze and understand a large amount of data. However, the steps required for visualizing semi-structured data obtained from the Web is not straightforward, and it requires proper treatment before information visualization techniques could be applied.
In this work, we present a visualization pipeline for describing the fundamental operations required for visualizing semi-structured data over the Web. For that, we employ Web Scrapping and Web Augmentation techniques for supporting interactive visualizations and solving tasks without changing the context of use of the data. Our approach is duly supported by a framework including scrapping, augmenting and visualization tools and it has been applied to different kinds of websites to demonstrate its validity and feasibility. Our ultimate goal is to expand the limits of our technology for improving the user interaction with websites and creating new experiences for better understanding large data sets
End-User Development of Voice User Interfaces based on Web content
Get PDFVoice Assistants, and particularly the latest gadgets called smart speakers, allow end users to interact with applications by means of voice commands. As usual, end users are able to install applications (also called skills) that are available in repositories and fulfill multiple purposes. In this work we present an end-user environment to define skills for voice assistants based on the extraction of Web content and their organization into different voice navigation patterns. We describe the approach, the end-user development environment, and finally we present some case studies based on Alexa and Amazon Echo
El territorio como escenario para el diseño: el caso de la fiesta del barro en Punta Indio
Get PDFHemos sido formados por una matriz académica donde el único conocimiento considerado como “valido” es aquel proveniente de la visión cientificista europea. En consecuencia, se fueron perdiendo muchos saberes, cosmovisiones y formas de entender la realidad tanto de los pueblos originarios, como así también las propias de la particular hibridación cultural de nuestro territorio. Del mismo modo, el Diseño Industrial es una disciplina importada que se impuso en nuestro continente bajo una metodología proyectual científico positivista y se consolido como el dogma para el “buen diseño”. Postura que término por ningunear y desplazar cualquier otra producción por fuera de estos cánones, es decir, a aquellos objetos con características locales o ancladas a los valores culturales de un territorio en particular. Sin embargo, esas producciones, responden al universo simbólico de la cultura que lo origina, se encuentran implícitos saberes que construyen a través de las prácticas cotidianas y de su tradición. Es por ello que se sostiene aquí que es innegable su potencial contribución para ampliar nuestra perspectiva disciplinar. Para dar cuenta de esta posición se toma como caso la experiencia desarrollada en la 3ª y 4ª Fiesta del Barro en Punta indio
Challenges of Teaching to the New Generation of IT Students
Get PDFToday, due to the tremendous growth of the software industry, there are a wide variety of job opportunities for it students; in many countries, this motivates undergraduate students to begin working as developers before they have finished their computing education. Sometimes, this situa- tion causes students to take longer to finish their careers. In addition, this situation impacts the profile of students who participate in university courses since they might have real experience on the topics of the university curricula. Thus, teach- ing the new generation of it students has become challenging, not only to be motivational for them, but also to provide them with relevant knowledge beyond the intended syllabus
DataMock: An Agile Approach for Building Data Models from User Interface Mockups
Get PDFIn modern software development, much time is devoted and much attention is paid to the activity of data modeling and the translation of data models into databases.
This has motivated the proposal of different approaches and tools to support this activity, such as semiautomatic approaches that generate data models from requirements artifacts using text analysis and sets of heuristics, among other techniques. However, these approaches still suffer from important limitations, including the lack of support for requirements traceability, the poor support for detecting and solving conflicts in domain-specific requirements, and the considerable effort required for manually checking the generated models. This paper introduces DataMock, an Agile approach that enables the iterative building of data models from requirements specifications, while supporting traceability and allowing inconsistencies detection in data requirements and specifications. The paper also describes how the approach effectively allows improving traceability and reducing errors and effort to build data models in comparison with traditional, state-of-the-art, data modeling approaches