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The potential of electronic books (ebooks) has been discussed widely, due mainly to their role in helping the user transform passive reading into interactive and dynamic learning, while promoting better retention and appropriation of materials. Taking this premise, the present study follows an exploratory and qualitative approach, discussing how the use of ebooks can improve learning, motivation, dynamism and interactivity in Distance Education. This study was supported by a bibliographic review and a survey method through an online questionnaire used as data collection instruments. The sample consisted of students who attended distance courses taught by the Open University ISCED -- UnISCED in Mozambique. The scientific literature studied, and the results from the field research, show the practicality of using ebook as a learning resource and they facility the interactivity.

Tomando en cuenta una periodización en tres etapas de la relación entre las empresas, el estado y la comunidad, en este reporte de un caso se plantea que la Responsabilidad Social Empresarial (RSE) es durante la fase de acumulación flexible del capital una forma de apuntalar el mismo “desarrollo” que pregona la comunidad internacional de la ONU. A través de dos nociones se arriba a esa comunión entre proclamas de la comunidad internacional y de las corporaciones: sustentabilidad y capital humano. Ello quedó plasmado en el Pacto Global al que suscribieron tanto emporios como el Programa de Naciones Unidas para el Desarrollo (PNUD). El objetivo de este trabajo, entonces, es demostrar que la relación entre empresas, estado y comunidad está apalancada por la misma retórica que la mencionada mancomunidad internacional. A partir del análisis de la política de RSE de una compañía distribuidora de energía eléctrica que forma parte del Pacto Global-Red Argentina, para lo cual se emplea una metodología cualitativa, se corrobora que la ética de las corporaciones está más enfocada en la vigilancia interna y el estricto control de la confidencialidad que en el compromiso con el entorno de la organización. Que ese sea el perfil de la RSE sobresale por tratarse de una compañía vinculada a un derecho humano: el derecho a la energía.

Reseña del libro de César Rodríguez Garavito (editor) (2022). Litigar la emergencia climática: la movilización ciudadana ante los tribunales para enfrentar la crisis ambiental y asegurar derechos básicos. Buenos Aires, Argentina: Siglo XXI, 457 pp.

El siguiente artículo propone una reflexión hipotética a partir de anticipar un posible desplazamiento en el sistema financiero mundial del actual dólar-patrón hacia el patrón-energía en el que se basa generación y circulación de las criptomonedas. Considerando ciertos principios sobre el agiotaje que se derivan del White Paper se vaticinan algunos sucesos y, por lo tanto, tales o cuales movimientos de reacomodamiento social frente a ese nuevo modelo de sistema financiero mundial. El artículo comienza con una genealogía de esos sistemas reflejados en patrones del dinero mundial, luego desarrolla el vínculo entre criptomonedas y acceso y uso a la energía para concluir con los vaticinios de proyectar el escenario hipotético de desplazamiento del patrón-dólar al patrón-energía.

This study addresses three issues linked to teaching practices in higher education and the implementation of teaching-learning methods in a changing context: (1) the profile of teachers using virtual platforms and blended learning (according to professional category, gender, teaching experience, and branch of knowledge), (2) the use of blended learning (according to the type of studies, number of students, and activities), and (3) the relationship between teachers' instruction and the use of blended learning. A quantitative, descriptive-correlational design and a sample of 982 teachers at 35 Spanish public universities have revealed that the profile of the teaching staff using blended learning corresponds to those in the field of social sciences and law, with a stable professional category, who report using virtual means in support of face-to-face teaching. The results confirm the need for teacher training and the design of institutional plans for monitoring and subsequent support.

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This article aims to assess whether deficiencies in urban infrastructure and political cycles significantly impact public resource allocation decisions in urban infrastructure investments in the municipalities of Piauí. To achieve this objective, we used state-level information from 2010 to 2020 to capture three electoral cycles. As a methodological approach, we use behavioral data analysis, as well as linear regression with panel data. The results show the existence of influence of deficiency in urban infrastructure, as well as the electoral cycle in the allocation of infrastructure resources. The results indicate that municipalities with greater deficiencies in urban infrastructure tend to receive more investment in the area than municipalities with higher rates of urban development. The results also indicate that parties that form the government's base tend to receive greater investment in urban infrastructure in pre-election periods compared to parties that do not make up the base, but contrary to what was predicted, the distortion between the allocation of resources between parties that make up and does not make up the government base is significantly smaller in electoral periods. This result contributes to the literature by showing that cycles can be more influenced depending on the coalition of parties that is governing, as well as the deficiency in urban infrastructure present in the municipalities. [ABSTRACT FROM AUTHOR]

Abstract In this work, the degradation of methylene blue (MB) in aqueous solution by a heterogeneous Fenton-like process was studied. Nb2O5 supported on an anodized aluminum monolith was used as catalyst. The Nb2O5 coating generated during the catalyst synthesis was uniform and porous, with a thickness of 7 μm. Response surface methodology was used to study the relationship between process variables and MB degradation and chemical oxygen demand (COD) reduction. The optimal operating conditions were: initial MB concentration of 45 mg L− 1, initial H2O2 concentration in the reaction medium of 40 mM, catalyst loading of 7.85 kg Nb 2 O 5 $$ {\mathrm{kg}}_{{\mathrm{Nb}}_2{\mathrm{O}}_5} $$ m− 3, and pH 4, reaching a MB degradation of 98% and a COD reduction of 79% at 150 min. The high activity of the Nb2O5 monolith catalyst remained constant after 10 catalytic tests.

El horizonte de este artículo es desmontar, con lógica secuencial-deductiva, ciertos supuestos sobre periodismo que imperan actualmente en el ámbito de los derechos humanos y que tienen que ver con el sesgo liberal de éstos. El primer supuesto es que vale la pena continuar con la discusión de si el periodismo es un oficio o una profesión y, claro, atrincherarse en que se trata de un oficio. Se proponen pruebas etimológicas, de diccionario y en los fenómenos de comunicación contemporáneos sobre el desatino de seguir pensando el periodismo en clave oficio/profesión. El segundo supuesto, más de índole doctrinario, es que el periodismo y la libertad de expresión son dos elementos de una misma naturaleza, son cosas indistintas que están imbricadas. Un tercer supuesto, que se da como consecuencia de los anteriores, es que la colegiación obligatoria del periodismo implicaría restringir la libertad de expresión. Sobre este último punto volvemos para rediscutir la colegiación como forma de organización de los periodistas que tanto puede protegerlos como trabajadores como servir de reaseguro de toda la comunidad sobre el cumplimiento más pleno posible de la dimensión colectiva de la libertad de expresión. Para desmontar esos supuestos se propone una nueva manera de entender el oficioprofesión: la concepción triádica del periodismo.

Abstract An updated review of emerging plant proteases with potential biotechnological application is presented. Plant proteases show comparable or even greater performance than animal or microbial proteases for by‐product valorization through hydrolysis for, for example, cheese whey, bird feathers, collagen, keratinous materials, gelatin, fish protein, and soy protein. Active biopeptides can be obtained as high added value products, which have shown numerous beneficial effects on human health. Plant proteases can also be used for wastewater treatment. The production of new plant proteases is encouraged for the following advantages: low cost of isolation using simple procedures, remarkable stability over a wide range of operating conditions (temperature, pH, salinity, and organic solvents), substantial affinity to a broad variety of substrates, and possibility of immobilization. Vegetable proteases have enormous application potential for the valorization of industrial waste and its conversion into products with high added value through low‐cost processes.