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A new coupled finite element model has been developed for the joint resolution of both the shallow water equations, that governs the free surface flow, and the groundwater flow equation that governs the motion of water through a porous media. The paper aims to discuss these issues.

The model is based upon two different modules (surface and ground water) previously developed by the authors, that have been validated separately.

The newly developed software allows for the assessment of the fluid flow in natural watersheds taking into account both the surface and the underground flow in the way it really takes place in nature.

The main achievement of this work has dealt with the coupling of both models, allowing for a proper moving interface treatment that simulates the actual interaction that takes place between surface and groundwater in natural watersheds.

This analysis develops and predicts a politically controversial idea, namely that nuclear fission power will be the dominant energy resource of the 21st century. Abundant energy enables higher and more efficient utilization of resources. Energy drives the engines of industrial and food production, transportation, building construction, space heating, transformation of landscapes, recreation, etc. This article compares other energy alternatives with the potential of nuclear fission power. It predicts that several hundred nuclear plants, each nominally of 10 gigawatts capacity, could supply the world’s energy requirements without creation of polluting greenhouse gases. Moreover, the superabundance of power this would represent could feed the world, supply its drinking water, and raise the per capita income and standard of living to levels where total human population would level off at an acceptable number. However, realization of such benefits requires unprecedented world cooperation, and these issues are also treated in this article.

The purpose of this study is to analyze the strategies that allow sowing social entrepreneurship initiatives among young university students in Latin America. This study will also help to understand the different needs and expectations currently treated in higher education in developing its role as a promoter of entrepreneurship in students.

The study uses a multinomial logistic regression method analysis based on data collected through an online survey and applied to a sample of 599 advanced business administration students in five Latin American countries.

The results indicate that three of the independent variables under study are relevant as strategies to instill in university students the initiative for creating social entrepreneurship: establishing links with social communities, providing entrepreneurial education with a social orientation, and offering financial education.

These research findings indicate the role universities should have in promoting social entrepreneurship in university students. Therefore, the proposed strategies are crucial to improving this type of entrepreneurship.

The main contribution of this study is to analyze issues as crucial as social entrepreneurship in Latin American university students and broaden knowledge of the main strategies universities in this region must adopt so that students launch into the social area.

El propósito de este estudio es analizar las estrategias que permitan sembrar iniciativas de emprendimiento social entre jóvenes universitarios de América Latina. Esto permitirá conocer las diferentes necesidades y expectativas que se tienen actualmente en la educación superior en el desarrollo de su papel como promotor del emprendimiento en los estudiantes.

El estudio utiliza un análisis método regresión logística multinomial basado en datos recopilados a través de una encuesta en línea, aplicada a una muestra de 599 estudiantes avanzados de administración de empresas en cinco países latinoamericanos.

Los resultados evidencian que tres de las variables independientes en estudio son relevantes como estrategia para sembrar en los estudiantes universitarios la iniciativa de crear emprendimiento social: el tener vínculos con las comunidades sociales, otorgar educación emprendedora con orientación social y el brindar educación financiera.

Los hallazgos de esta investigación señalan el rol que deben de tener las universidades para fomentar el emprendimiento social en los estudiantes universitarios. Por lo tanto, se proponen estrategias claves para mejorar este tipo de emprendimientos.

La principal contribución de este estudio es analizar temas tan importantes como el emprendimiento social en los estudiantes universitarios de América Latina y ampliar el conocimiento de las principales estrategias que deben adoptar las universidades de esta región para que los estudiantes se lancen en el área social.

O objetivo deste estudo é an analisar as estratégias que permitem semear iniciativas de empreendedorismo social entre jovens universitários da América Latina. Permitirá conhecer as diferentes necessidades e expectativas atualmente tratadas no ensino superior no desenvolvimento do seu papel de promotor do empreendedorismo nos alunos.

O estudo utiliza um método de análise de regressão logística multinomial baseado em dados coletados por meio de uma pesquisa on-line, aplicada a uma amostra de 599 estudantes avançados de administração de empresas em cinco países latino-americanos.

Os resultados mostram que três das variáveis independentes em estudo são relevantes como estratégia para incutir nos estudantes universitários a iniciativa de criar empreendedorismo social: ter ligações com comunidades sociais, proporcionar educação empreendedora com orientação social e fornecer educação financeira.

Os resultados desta investigação indicam o papel que as universidades devem ter na promoção do empreendedorismo social nos estudantes universitários. Portanto, as estratégias propostas são fundamentais para melhorar esse tipo de empreendedorismo.

A principal contribuição deste estudo é analisar temas tão importantes quanto o empreendedorismo social nos universitários latino-americanos, e ampliar o conhecimento das principais estratégias que as universidades desta região devem adotar, para que os estudantes se lancem na área social.

The article aims to explore the potential for pebble‐bed high‐temperature gas reactor (HTGR) technology to meet possible future energy shortages.

The historical evolution of nuclear power is reviewed followed by empirical data that demonstrate the finite nature of oil and gas reserves. The characteristics of HTGR technology are then explored.

A pebble‐bed HTGR ameliorates nuclear waste disposal issues, does not disgorge large quantities of excess heat, is terrorist‐resistant, solves persistent problems concerning weapon proliferation, and is inherently safe.

The article makes the case for the US Department of Energy to take the lead in demonstrating a pebble‐bed HTGR plant to overcome industry reluctance to invest in this technology.

This paper aims to review the history of Roldós y Compañía, one of the oldest advertising agencies in the world and the oldest currently operating. This research aims to highlight the importance of this agency and its founder, Rafael Roldós Viñolas – the first documented advertising agent in Spain to this day – in shaping the emerging Spanish advertising industry at the end of the 19th century.

The methodology used in this paper is based on a review of period and contemporary literature, as well as on newspaper sources and documents from the private archive of Roldós, S.A.

In its early years, the agency’s participation in two of the most significant events for the modernization of the city of Barcelona, the Universal Exhibition of 1888 and the International Exhibition of 1929; as well as the ideation and implementation of several urban projects with the aim of finding new formulas and advertising media are factors that make it one of the most important in the country. In 1929, the alliance Roldós-Tiroleses, S.A. de Publicidad, the first great merger of advertising agencies in Spain, which lasted three years, was led. The outbreak of the Civil War and the subsequent post-war period marked a few years of business irregularities and advertising silences that gave instability to its activity. During the last third of the 20th century, the agency was immersed in the generalized advertising euphoria around the world. With the arrival of North American agencies in Barcelona and the consequent business movements, Roldós, S.A. specializes in the processing of advertisements and media planning. The 21st century began with important changes in the media planning sector, and the agency was forced to restructure its services and organizational structure. In 2022, it celebrates 150 years of uninterrupted activity, recognized by the country’s business sector.

This research aims to internationalize the history of the Roldós y Compañía agency, so that it can be studied together with other names of Anglo-Saxon advertising pioneers who were contemporaries of Rafael Roldós.

Scientific research on the history of advertising agencies, especially in Spain, is scarce, so this paper aims to help fill this gap.

Artificial‐life techniques – specifically, agent‐based models and evolutionary learning algorithms – provide a potentially powerful new approach to understanding some of the fundamental processes of war. This paper introduces a simple artificial‐like “toy model” of combat called Enhanced ISAAC Neural Simulation Tool (EINSTein). EINSTein is designed to illustrate how certain aspects of land combat can be viewed as self‐organized, emergent phenomena resulting from the dynamical web of interactions among notional combatants. EINSTein's bottom‐up, synthesist approach to the modeling of combat stands in stark contrast to the more traditional top‐down, or reductionist approach taken by conventional military models, and represents a step toward developing a complex systems theoretic toolbox for identifying, exploring, and possibly exploiting self‐organized emergent collective patterns of behavior on the real battlefield. A description of the model is provided, along with examples of emergent agent patterns and behaviors.