La política de expansión de la revolución islámica iraní fue desarrollada por vía de dos principios religioso-políticos esenciales en la labor de ampliación territorial y administrativa del _Dār al-islām_: la _da‛wa_ y el _tablīg_. Esta estrategia político-ideológica convierte al país en lanzadera de una “_Islamist International_” que trasciende la división territorial y administrativa de los Estados-nación. El análisis de los datos históricos ilustra cómo el nacimiento de la única comunidad islámica _šī‛ī_ duodecimana de la ciudad portuaria de Buenaventura, conformada por (...) afrodescendientes, guarda vinculación tanto con esta política expansiva como con el pluralismo jurídico nacional del Estado colombiano. La aplicación sociológico-jurídica de la conceptualización del _Kadijustiz_ permite concluir que dicho pluralismo jurídico del Estado colombiano beneficia la expansión de la revolución islámica iraní, al obedecer a intereses partidistas que buscan su legitimación, vía demandas particulares, en un pretendido beneficio general. (shrink)

The work of Chandra and Harel contained in Chandra and Harel 156–178) can be considered as the beginning of the construction of a theoretical framework in which the computability and the complexity of queries to relational databases could be studied. In the definition of the class CQ of computable queries, the authors included untyped queries , that is, queries whose answers are relations of possibly different arities on different relational structures or databases. However, it seems that in the quite wide (...) and important work which followed on the subject, untyped queries were not considered at all, neither in the abstract machines side , nor in the logic framework. We propose to re-introduce these queries in the study of query computability and complexity without the need to leave the relational model. One important application which we consider in the theoretical setting is the computation of numerical queries, that is, queries which range over the naturals. Numerical queries do not fit in the current state of the theory regarding the two formalisms referenced above, since they can result in numerical values which are not necessarily in the domain of the given structure. We define an extension of the reflective relational machine of Abiteboul et al. , which we call untyped reflective relational machine , and we prove that this model is complete considering the whole class CQ . In the logic framework, we define a new quantifier, which we call conditional quantifier , and we build with it an infinitary logic which we denote by L ω 1 ω c . The difference between this logic and the well-known infinitary logic L ω 1 ω is that a formula of our logic can induce relations of different arities on different structures or databases. Then we prove that L ω 1 ω c strictly includes the whole sub-class of the total computable queries, including untyped queries. Finally, we define a fragment of L ω 1 ω c which we prove that exactly captures the sub-class of the total computable queries, but which is undecidable. We also define an undecidable fragment of L ω 1 ω which exactly captures the sub-class of the total and typed computable queries. (shrink)

Frente al fenómeno de transición demográfica, en el que se produce el envejecimiento de la población y el descenso de las tasas de natalidad, predominan diagnósticos de catástrofe. La demografía es usada como fundamento de la inviabilidad de los sistemas previsionales, y también de discursos natalistas. La caída de la natalidad preocupa doblemente: por el proceso de envejecimiento demográfico al que contribuye; y por sus propias consecuencias económicas, dadas las perspectivas de una inminente disminución de población activa, o sea, de (...) fuerza de trabajo, en momentos en que, por el envejecimiento, el peso económico sobre las sociedades seguirá incrementándose. Este artículo se propone discutir el diagnóstico del envejecimiento como un grave problema por sí mismo, para luego desmentir que sea inevitable y/o fundamental disminuir la protección previsional y/o que incrementar la natalidad sea imprescindible. La hipótesis fundamental es que la transición demográfica no es un fenómeno negativo “en sí mismo”. Es en virtud de determinados contextos distributivos que deviene en un “problema”: contextos caracterizados por la polarización de la distribución del ingreso y sistemas de protección social de tipo contributivo. (shrink)

In recent years, the debate about the role of the Public Institutions in the fields of corporate social responsibility and sustainable development has gained momentum. Nevertheless, the ambiguity of the latter concepts makes it difficult both to measure them and to estimate the impact that the different public initiatives may have on them. In this sense, the present research has the aim to design a fuzzy logic-based methodology applied to the evaluation of the above-mentioned processes in relation to the state-aid (...) policies for the European industry. Regarding the study contour, the European Union state aids seems not to have introduced important changes leading to socially responsible results and, therefore, favourable for the sustainable development generated by the European manufacturing industry. (shrink)

The object of this research is gentleness, a construct maybe not treated enough in the literature, but just in the area of the so called Positive Psychology. And precisely from his representative Martin Seligman, the inspiration for the construction of a questionnaire and of a specific hypothesis has been born, including the use of a precise terminology. In general terms, maybe the most interesting result lies in the fact of having found a correlation between the various items, therefore between the (...) various constructs, in accordance with the idea of gentleness proposed as a synergy of “quality”. This idea has also been supported from recent research in which has emerged a very tight bond between optimism and a particular character trait that is extroversion. Being placed at a higher, transcendental level, the “gift of oneself” could become the “jump of quality” to fulfil ourselves in the relation with the other. (shrink)

This article presents the results of the evaluations of the mechanical stresses associated with the performance of manual lifting tasks of loads and those operators must endure in their workplaces, considering these the most recurrent cases and positions. This study is based on a static analysis of certainspecific positions of the human body, the transmission of forces through the musculoskeletal structure, and the generation of efforts at critical points of the body. In addition to this, it is considered a revision (...) of the criteria of the Spanish Technical Standard NTP-477. There are critical points of the musculoskeletal structure that support considerable efforts, the recommendations and criteria provided by the NTP-477 are relevant and although limited, provide an adequate margin of safety to avoid injury to workers. (shrink)

The Habermasian concept of ‘interest’ has had a profound effect on the characterization of scientific disciplines. Going beyond issues unrelated to the theory itself, intra‐theoretical interest characterizes the specific ways of approaching any science‐related discipline, defining research topics and methodologies. This approach was developed by Jürgen Habermas in relation to empirical–analytical sciences, historical–hermeneutics sciences, and critical sciences; however, he did not make any specific references to health sciences. This article aims to contribute to shaping a general epistemological framework for health (...) sciences, as well as its specific implications for the medical and nursing areas, via an analysis of the basic knowledge interests developed by Habermas. (shrink)

This book provides an introduction to the key arguments in decolonial feminism, particularly, the coloniality of gender, the critique of white and Eurocentric feminisms, the imbrication between gender, race, and colonialism, feminicides, and the coloniality of democracy and public institutions.

No two individuals with the autism diagnosis are ever the same—yet many practitioners and parents can recognize signs of ASD very rapidly with the naked eye. What, then, is this phenotype of autism that shows itself across such distinct clinical presentations and heterogeneous developments? The “signs” seem notoriously slippery and resistant to the behavioral threshold categories that make up current assessment tools. Part of the problem is that cognitive and behavioral “abilities” typically are theorized as high-level disembodied and modular functions—that (...) are assessed discretely (impaired, normal, enhanced) to define a spectral syndrome. Even as biology reminds us that organic developing bodies are not made up of independent switches, we remain often seduced by the simplicity of mechanistic and cognitive models. Developmental disorders such as autism have accordingly been theorized as due to different modular dysfunctions—typically of cortical origin, i.e., failures of “theory of mind” (Baron-Cohen et al., 1985), of the “mirror neuron system” (Ramachandran and Oberman, 2006), of “weak central coherence” (Happe and Frith, 2006) or of the balance of “empathizing” and “systemizing” (Baron-Cohen, 2009), just to list a few. -/- The broad array of autonomic (Ming et al., 2005; Cheshire, 2012) and sensorimotor (Damasio and Maurer, 1978; Maurer and Damasio, 1982; Donnellan and Leary, 1995; Leary and Hill, 1996; Donnellan and Leary, 2012; Donnellan et al., 2012) differences experienced and reported by people with autism have by such theories typically been sidelined as “co-morbidities,” possibly sharing genetic causes, but rendered as incidental and decisively behaviorally irrelevant symptoms—surely disconnected from cognition. But what if the development of cortically based mental processes and autonomous control relies on the complexities and proper function of the peripheral nervous systems? Through such an “embodied” lens the heterogeneous symptoms of autism invites new interpretations. We propose here that many behavioral-level findings can be re-defined as downstream effects of how developing nervous systems attempt to cope and adapt to the challenges of having various noisy, unpredictable, and unreliable peripheral inputs. (shrink)

ABSTRACTIn the process of teaching law, is necessary to address some aspects that are not framed in strictly legal knowledge and require different strategies to be approach by the professor. An exa...

The current rise of neurodevelopmental disorders poses a critical need to detect risk early in order to rapidly intervene. One of the tools pediatricians use to track development is the standard growth chart. The growth charts are somewhat limited in predicting possible neurodevelopmental issues. They rely on linear models and assumptions of normality for physical growth data – obscuring key statistical information about possible neurodevelopmental risk in growth data that actually has accelerated, non-linear rates-of-change and variability encompassing skewed distributions. Here, (...) we use new analytics to profile growth data from 36 newborn babies that were tracked longitudinally for 5 months. By switching to incremental (velocity-based) growth charts and combining these dynamic changes with underlying fluctuations in motor performance – as the transition from spontaneous random noise to a systematic signal – we demonstrate a method to detect very early stunting in the development of voluntary neuromotor control and to flag risk of neurodevelopmental derail. (shrink)

The current assessment of behaviors in the inventories to diagnose autism spectrum disorders (ASD) focus on observation and discrete categorizations. Behaviors require movements, yet measurements of physical movements are seldom included. Their inclusion however, could provide an objective characterization of behavior to help unveil interactions between the peripheral and the central nervous systems. Such interactions are critical for the development and maintenance of spontaneous autonomy, self-regulation and voluntary control. At present, current approaches cannot deal with the heterogeneous, dynamic and stochastic (...) nature of development. Accordingly, they leave no avenues for real-time or longitudinal assessments of change in a coping system continuously adapting and developing compensatory mechanisms. We offer a new unifying statistical framework to reveal re-afferent kinesthetic features of the individual with ASD. The new methodology is based on the non-stationary stochastic patterns of minute fluctuations (micro-movements) inherent to our natural actions. Such patterns of behavioral variability provide re-entrant sensory feedback contributing to the autonomous regulation and coordination of the motor output. From an early age, this feedback supports centrally driven volitional control and fluid, flexible transitions between intentional and spontaneous behaviors. We show that in ASD there is a disruption in the maturation of this form of proprioception. Despite this disturbance, each individual has unique adaptive compensatory capabilities that we can unveil and exploit to evoke faster and more accurate decisions. Measuring the kinesthetic re-afference in tandem with stimuli variations we can detect changes in their micro-movements indicative of a more predictive and reliable kinesthetic percept. Our methods address the heterogeneity of ASD with a personalized approach grounded in the inherent sensory-motor abilities that the individual has already developed. (shrink)

In this article, we scrutinize views that justify exclusionary policies regarding transgender athletes based primarily on physiological criteria. We introduce and examine some elements that deserve...

RESUMEN Juan Marinello Vidaurreta, eminente trabajador de las letras, que no cambió la pluma por la política, sino que hizo de la política incesante gestión de creación espiritual. Vivió tres etapas decisivas de Cuba: los rezagos de la colonia española; la República mediatizada, que combatió; y el socialismo, que ayudó a consolidar. El objetivo es demostrar la confluencia del pensamiento martiano y marxista desde el análisis de la cultura en la obra de Juan Marinello Vidaurreta. Se asumió la concepción dialéctica (...) materialista como metodología general para conocer el objeto de investigación en sus antecedentes y tendencias actuales. Además permitió ampliar el conocimiento sobre el tema objeto de estudio, a través del análisis de texto, el contenido y el discurso; la crítica de fuentes posibilitó extraer inferencias a partir de la teoría preexistente y la información empírica acopiada. El pensamiento marinelliano se fue formando como resultado de la influencia del movimiento progresista cubano, del pensamiento martiano y marxista-leninista, lo más avanzado del pensamiento latinoamericano y universal. Subyace en su obra una concepción integradora y totalizadora de la cultura, de base martiana y marxista. ABSTRACT Juan Marinello Vidaurreta eminent worker of the letters that did not change the pen by the policy, but that made of the policy, incessant management of spiritual creation. He lived three decisive stages of Cuba: the lags of the Spanish colony; the mediated Republic, which fought; and socialism, which helped to consolidate. The objective is to demonstrate the confluence of Marti's and Marxist thinking from the analysis of culture in the work of Juan Marinello Vidaurreta. The dialectical materialist conception was assumed as general methodology to know the object of research in its antecedents and current trends. In addition it allowed expanding the knowledge on the subject under study, through the analysis of text, content and discourse; the critique of sources made it possible to draw inferences from the preexisting theory and the empirical information collected. Marinellian thought was formed as a result of the influence of the Cuban progressive movement, of Marti and Marxist-Leninist thought, the most advanced of Latin American and universal thought. It underlies in his work an integrative and totalizing conception of the culture, of Marti base and marxist. (shrink)

Autism has been defined as a disorder of social cognition, interaction and communication where ritualistic, repetitive behaviors are commonly observed. But how should we understand the behavioral and cognitive differences that have been the main focus of so much autism research? Can high-level cognitive processes and behaviors be identified as the core issues people with autism face, or do these characteristics perhaps often rather reflect individual attempts to cope with underlying physiological issues? Much research presented in this volume will point (...) to the latter possibility, i.e. that people on the autism spectrum cope with issues at much lower physiological levels pertaining not only to Central Nervous Systems (CNS) function, but also to peripheral and autonomic systems (PNS, ANS) (Torres, Brincker, et al. 2013). The question that we pursue in this chapter is what might be fruitful ways of gaining objective measures of the large-scale systemic and heterogeneous effects of early atypical neurodevelopment; how to track their evolution over time and how to identify critical changes along the continuum of human development and aging. We suggest that the study of movement variability—very broadly conceived as including all minute fluctuations in bodily rhythms and their rates of change over time (coined micro-movements (Figure 1A-B) (Torres, Brincker, et al. 2013))—offers a uniquely valuable and entirely objectively quantifiable lens to better assess, understand and track not only autism but cognitive development and degeneration in general. This chapter presents the rationale firstly behind this focus on micro-movements and secondly behind the choice of specific kinds of data collection and statistical metrics as tools of analysis (Figure 1C). In brief the proposal is that the micro-movements (defined in Part I – Chapter 1), obtained using various time scales applied to different physiological data-types (Figure 1), contain information about layered influences and temporal adaptations, transformations and integrations across anatomically semi-independent subsystems that crosstalk and interact. Further, the notion of sensorimotor re-afference is used to highlight the fact that these layered micro-motions are sensed and that this sensory feedback plays a crucial role in the generation and control of movements in the first place. In other words, the measurements of various motoric and rhythmic variations provide an access point not only to the “motor systems”, but also access to much broader central and peripheral sensorimotor and regulatory systems. Lastly, we posit that this new lens can also be used to capture influences from systems of multiple entry points or collaborative control and regulation, such as those that emerge during dyadic social interactions. (shrink)

Most studies investigating the relationship between cultural constructs and ethical perception have focused on individual- and societal-level values without much attention to other type of cultural constructs such as social beliefs. In addition, we need to better understand how social beliefs are linked to ethical perception and the level of analysis at which social beliefs may best predict ethical perceptions. This research contributes to the cross-cultural ethical perception literature by examining the relationship of individual-level social cynicism belief, one of five (...) universally endorsed social beliefs, together with individual social dominance orientation and the perception of unethical behavior. By means of two studies, we examine these relationships across societies that significantly differ on societal-level social cynicism belief. Using 371 business students from Russia and the U.S. in Study 1 and 268 professionals from Portugal and the U.S. in Study 2, we found that individual-level social cynicism belief was positively associated with social dominance orientation. Social dominance orientation, in turn, mediated the relationship between individual social cynicism belief and the perception of unethical behavior. Although we found significant societal-level differences in social cynicism belief in both studies, the relationships between individual-level social cynicism belief, social dominance orientation, and the perception of unethical behavior were structurally equivalent across societies in both studies, suggesting that societal-level differences did not significantly affect these relationships. Implications for cross-cultural business ethics research and practice are discussed. (shrink)

The area of smart power grids needs to constantly improve its efficiency and resilience, to provide high quality electrical power in a resilient grid, while managing faults and avoiding failures. Achieving this requires high component reliability, adequate maintenance, and a studied failure occurrence. Correct system operation involves those activities and novel methodologies to detect, classify, and isolate faults and failures and model and simulate processes with predictive algorithms and analytics. In this paper, we showcase the application of a complex-adaptive, self-organizing (...) modeling method, and Probabilistic Boolean Networks, as a way towards the understanding of the dynamics of smart grid devices, and to model and characterize their behavior. This work demonstrates that PBNs are equivalent to the standard Reinforcement Learning Cycle, in which the agent/model has an interaction with its environment and receives feedback from it in the form of a reward signal. Different reward structures were created to characterize preferred behavior. This information can be used to guide the PBN to avoid fault conditions and failures. (shrink)

Psychological flexibility is a key concept of acceptation and commitment therapy. This factor has been linked with psychological wellbeing and associated factors, such as quality of life, in cancer patients. These and other positive results of acceptation and commitment therapy in cancer patients found in previous research could be enhanced by using mhealth tools. A three-arm randomized superiority clinical trial, with a pre-post-follow-up repeated measures intergroup design with a 1:1:1 allocation ratio is proposed. A hundred and twenty cancer patients will (...) be randomly assigned to one of the following interventions: face-to-face ACT + mobile application, face-to-face ACT, and Waitlist control group. The primary expected outcome is to observe significant improvements in psychological flexibility acceptance and action questionnaire- II in the face-to-face ACT + app group, after comparing baseline and post-treatment scores, and the scores will remain stable in the two assessment points, 3 and 6 months after the intervention. Secondary expected outcomes are significant increasing scores in quality of life and post-traumatic-growth, and significant decreasing scores in anxiety and depression, insomnia and fatigue at the same assessment points. Also, it is expected that the scores of this group will be higher than the scores of the face-to-face ACT group and the waitlist control group. This study aims to assess the efficacy of a combined intervention for psychological flexibility and associated symptoms in cancer patients. The results of this protocol may help to consider the use of acceptation and commitment therapy and mhealth applications in cancer settings as a valid therapeutic choice.Clinical Trial Registration[www.ClinicalTrials.gov], identifier [NCT05126823]. (shrink)

IntroductionIndividuals with high scores of perceived stress are more likely to develop arterial hypertension than those with low levels of stress. In addition to this, AH and stress are both independent risk factors for executive function impairment and worse quality of life. Therefore, strategies to control and cope with emotional stress are of paramount importance. However, less is known about the association of PS with EF, QoL, and coping in individuals with hypertension. This study aimed to evaluate the association of (...) PS with EF performance, coping strategies use, and QoL in a sample of hypertensive patients.MethodsWe assessed a group of 45 hypertensive individuals. The EF evaluation was: Frontal Assessment Battery; Controlled Oral Word Association Test—FAS; Letter-Number Sequencing subtest from the Wechsler Adult Intelligence Scale—Third Edition ; Digit Span subtest from the Wechsler Memory Scale-Revised and Wisconsin Card Sorting Test. The type and frequency of coping strategies used were measured by the Brief Coping with Experienced Problems Scale. The World Health Organization Quality of Life Questionnaire Bref was applied to measure QoL. The associations of the PS with EF performance, coping strategies, and QoL were investigated using univariate and multiple linear regression models adjusted for age, sex, education, systolic pressure, and depression symptoms.ResultsIn the multivariate analyses, higher PS was an independent predictor for a lower frequency of emotion-focused strategy use. However, PS was not significantly related to EF and Qol in this sample. The lower the PS, the greater the use of emotion-focused coping.ConclusionHypertensive individuals with high PS use less frequently positive emotion-focused coping strategies. (shrink)

Hegel critica la falta de consecuencia de la teología cristiana tradicional por hacer de Diosalgo inaccesible, abstracto, desligado de la realidad finita, y por aceptar la facticidad de laconciencia religiosa como una postura alienada, que no lucha por la transformación de larealidad. Pero la racionalización de la fe cristiana introducida por el reduccionismo deHegel es desenmascarada por la teología consciente de que el discurso de la filosofía sobrela religión elimina el elemento de misterio y relación interpersonal que es constitutivo dela (...) experiencia religiosa cristiana. La fe cuestiona todo discurso sobre Dios. (shrink)

El aprendizaje de la Historia en Educación Secundaria se relaciona con un proceso memorístico y conceptual que dificulta la formación del pensamiento crítico y reflexivo en el alumnado de esta etapa educativa. Por este motivo, con esta experiencia y desde un enfoque investigativo, hemos fomentado la curiosidad y el interés de los alumnos de 1º de Secundaria por las prácticas religiosas y funerarias que profesaron los romanos. El método de enseñanza-aprendizaje fue activo y participativo, lo que facilitó la indagación y (...) la experimentación del taller “Funus romanorum”. Los resultados mostraron las ventajas de trabajar la arqueología experimental para comprender mejor los hechos acaecidos en la Antigüedad y adquirir contenidos históricos a través de talleres experienciales. (shrink)

El aula invertida es un método de trabajo dinámico y motivador tanto para el docente como para el alumnado universitario. El objetivo de esta investigación fue identificar la formación inicial y continua del profesorado novel en competencias digitales. Para ello se elaboró y validó un cuestionario cuantitativo con una escala de valoración Likert (1-5), y treinta ítems divididos en dos partes. Los resultados evidencian la valoración positiva de los participantes del estudio para invertir la enseñanza universitaria con un enfoque práctico (...) y, en conclusión, fomentar el desarrollo de diferentes herramientas educativas en plataformas online. (shrink)

La temática de este artículo abarca el desarrollo de la habilidad de la anotación en un grupo de intérpretes en formación, considerando que esta técnica es un recurso de apoyo importante para que se reformule con precisión y orden un discurso transmitido en un idioma diferente. En el marco teórico se analiza el proceso de interpretación, la modalidad consecutiva y los fundamentos de la anotación. La investigación se basa en el análisis de la formación académica de los aprendices en relación (...) a las capacidades y destrezas requeridas en esta profesión con el objetivo de facilitar el logro de las competencias profesionales óptimas que aseguren un adecuado desempeño y una inserción exitosa en el mercado laboral. (shrink)

In this paper we evaluate and confirm the effectiveness of including curriculum training on career management as a component of university studies. The behaviour of the students in this study was modified by the uncertainty created by the crisis in the labour market due to the pandemic.Our results confirm that universities need to develop the generic and academic skills demanded by the labour market in order to provide their students with comprehensive training while also taking joint responsibility for developing their (...) students’ career management skills. (shrink)

This article aims to measure both the economic and social value of Tecnocampus, a Science and Technology Park in its region of influence. Our results show that the impact of Tecnocampus has a socioeconomic cost–benefit ratio of 2.39. Measuring the impact of this multifaceted centre requires a diverse approach. Although the methods used are not new, the combination of them presents a novel approach to measure the impact of an institution of this nature. We have measured the economic value with (...) the Input–Output model, including the Social Accounting Matrix. On the other hand, for social value calculations, we have used cost–benefit analysis adding measurements of firm localisation to estimate externality effects. Our main results present an economic value of more than 0.054% of the Catalan GDP, whereas the employment impact represents almost 0.37% of total employment in the region. The total economic multiplier of Tecnocampus activity is estimated to be 1.89. Social value generates an additional 0.50 euros to the multiplier according with our analysis. This additional social value represents an increase of productivity estimated in 20 million euros of operational income for Catalan firms and the creation of seven additional firms in the Maresme region as a result of knowledge spillovers. The social value also includes reduction of over-education caused by a better matching between graduates and enterprises, a more direct application of research, and an increase in consumer surplus. Finally, we discuss the policy implications of our findings to promote investments in this kind of infrastructures. (shrink)

El articulo analiza experiencias de corporeidad de mujeres excombatientes de las FARC-EP, a partir de una investigación sociocrítica, fenomenológica y feminista, que implementó estrategias dialógicas, participativas, contextualizadas y problematizadoras. Los resultados describen los órdenes discursivos insurgentes en torno a la igualdad, los procesos de socialización que moldean cuerpos militantes y a la vez los controlan desde lo normativo; frente a estos últimos se vislumbran prácticas de fuga que evidencian las tensiones entre el orden insurgente y el de la vida civil. (...) Se concluye que el grupo armado moldea una subjetividad que combina elementos de las construcciones de género del contexto campesino de origen y referentes ideológicos y prácticos del contexto bélico que se esfuerza por configurar cuerpos fuertes y disciplinados. (shrink)

Este artículo analiza el impacto del envejecimiento sobre los sistemas de jubilaciones y pensiones en América Latina en general y Argentina en particular. Del análisis de la dependencia demográfica se deduce que el envejecimiento incrementa la carga económica de un sistema de protección social en la vez. Pero, estudiando a fondo los indicadores utilizados tradicionalmente para calcular el impacto económico del envejecimiento, su capacidad explicativa puede ser puesta seriamente en duda. La “escasez de recursos” no se constata al considerar la (...) producción económica de la sociedad en su conjunto. Frente al envejecimiento de la población, son los sistemas de carácter contributivo, y no la economía en su conjunto, los que no pueden hacer frente al incremento de jubilados. Palabras clave Sistema previsional, envejecimiento, transición demográfica, seguridad social, mercado de trabajo. (shrink)