CRIS
Permanent URI for this communityhttps://scripta.up.edu.mx/handle/20.500.12552/1
Browse
4464 results
Search Results
Now showing 1 - 10 of 4464
- Some of the metrics are blocked by yourconsent settings
Item type:Publication, Discovery, Invention, and Supposition. Three Case Studies from Medieval Sardinia(BRILL, 2021-08-05); ;Alex MetcalfeMarco Muresu - Some of the metrics are blocked by yourconsent settings
Item type:Publication, La Cerdeña Medieval vista desde la modernidad. Un epítome historiográfico de la supuesta conectividad mediterránea(Universidad Autónoma de Chihuahua, 2019-04)Con la intención de ofrecer una nueva lectura de las formas en las que se ha concebido a la Cerdeña medieval, el presente artículo presenta una sinopsis condensada y una crítica de las consideraciones más influyentes en la historiografía moderna del Mediterráneo. Este breve trabajo explica cómo estas consideraciones historiográficas han contribuido a la presunción de la unidad comercial y cultural del Mar Interior durante la Edad Media. Lo anterior se expone para relacionar la asumida conectividad del Mediterráneo medieval con la forma en la que se aborda la cuestión de la particularidad histórica de la isla sarda. Es sobre este epítome que se sugieren algunas claves para la interpretación histórica y se revisan las controversias aún vigentes de la Cerdeña medieval, especialmente centradas en torno a los reinos independientes sardos – i.e. los giudicati de los siglos XI al XIII. De esta manera, la discusión aquí desplegada pretende servir de antesala para una propuesta de investigación más robusta sobre los órdenes sociales sardos de la Edad Media central. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, County and Nobility in Norman Italy: Aristocratic Agency in the Kingdom of Sicily, 1130-1189(Bloomsbury Publishing Plc, 2020)Whilst historians often regard the Norman Kingdom of Sicily as centralised and administratively advanced, County and Nobility in Norman Italy counters this traditional interpretation; far from centralised and streamlined, this book reveals how the genesis and social structures of the kingdom were constantly fraught between the forces of royal power and local aristocracy authority. In doing so, Hervin Fernandez Aceves sheds important new light on medieval Italy. This book is the result of thorough research conducted on the vast source material for the history of this fascinating 12th-century world. Starting with the activities of Norman counts and the configuration of the counties, it explores how social control operated in these nodes of regional authority, and argues that the Sicilian monarchy relied on the counties (and the counts’ authority) to keep the realm united and exercise control. © Hervin Fernández-Aceves 2020. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, - Some of the metrics are blocked by yourconsent settings
Item type:Publication, The Indirect Effects of Participation in Sports on Entrepreneurship: Evidence from Russian Longitudinal Data(SAGE Publications, 2025-11)The article presents a theoretical model and its corresponding empirical test on the indirect effects of participation in sports on entrepreneurship among non-professional athletes. The empirical strategy consists of panel data econometric techniques, controlling for confounding factors and possible endogeneity concerns. Data are taken from the Russian Longitudinal Monitoring Survey (n = 197,699 observations from 33,889 individuals over the years 2000–2019). The results suggest that individuals who engage in sports and/or physical exercise are more likely to become entrepreneurs, including self-employed individuals, as well as to hire more workers compared to their sedentary counterparts. Overall, non-professional athletes may increase their likelihood of becoming entrepreneurs by 12% to 36% (odds ratios), and hire about 1% to 2% more employees. Therefore, entrepreneurship should be added to the long list of reasons for the promotion of sports and physical exercise. Other implications and specific findings by age, gender, and type of sport are discussed. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Electrodermal Response Patterns and Emotional Engagement Under Continuous Algorithmic Video Stimulation: A Multimodal Biometric Analysis(MDPI AG, 2026-01-18); ; ; ;David Contreras-TiscarenoDiego Sebastian Montoya-RodriguezExcessive use of short-form video platforms such as TikTok has raised growing concerns about digital addiction and its impact on young users’ emotional well-being. This study examines the relationship between continuous TikTok exposure and emotional engagement in young adults aged 20–23 through a multimodal experimental design. The purpose of this research is to determine whether emotional engagement increases, remains stable, or declines during prolonged exposure and to assess the degree of correspondence between facially inferred engagement and physiological arousal. To achieve this, multimodal biometric data were collected using the iMotions platform, integrating galvanic skin response (GSR) sensors and facial expression analysis via Affectiva’s AFFDEX SDK 5.1. Engagement levels were binarized using a logistic transformation, and a binomial test was conducted. GSR analysis, merged with a 50 ms tolerance, revealed no significant differences in skin conductance between engaged and non-engaged states. Findings indicate that although TikTok elicits strong initial emotional engagement, engagement levels significantly decline over time, suggesting habituation and emotional fatigue. The results refine our understanding of how algorithm-driven, short-form content affects users’ affective responses and highlight the limitations of facial metrics as sole indicators of physiological arousal. Implications for theory include advancing multimodal models of emotional engagement that account for divergences between expressivity and autonomic activation. Implications for practice emphasize the need for ethical platform design and improved digital well-being interventions. The originality and value of this study lie in its controlled experimental approach that synchronizes facial and physiological signals, offering objective evidence of the temporal decay of emotional engagement during continuous TikTok use and underscoring the complexity of measuring affect in highly stimulating digital environments. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Optimization Techniques for Improving Economic Profitability Through Supply Chain Processes: A Systematic Literature Review(MDPI AG, 2026-01-04) ;Ricardo Jarquin-SegoviaJosé Antonio Marmolejo-Saucedo<jats:p>In today’s dynamic and global business landscape, economic profitability is essential for creating and sustaining competitive advantage. Nevertheless, a critical gap persists in the literature regarding the application of advanced optimization techniques that systematically link operational improvements in the supply chain with strategic financial indicators. Accordingly, this study aims to identify and synthesize the optimization techniques applied to supply chain processes and their impact on economic profitability. To achieve this objective, the PRISMA methodology was employed. A systematic literature review covering the last ten years (2015–2025) was conducted using the Web of Science database. After applying inclusion and exclusion criteria, 35 studies were selected, revealing a growing methodological diversity. Nature-Inspired Algorithms (NIAs) and hybrid approaches (such as MILP combined with Simulation) demonstrate greater capacity to address complex and multi-objective scenarios. Notably, hybrid techniques have been successfully applied to the maximization of Economic Value Added (EVA), a key strategic value indicator. Despite the sophistication of these optimization techniques, the predominant objective remains total cost minimization, often sidelining the direct optimization of strategic indicators such as EVA or the Cash Conversion Cycle (CCC). Additionally, a key research gap was identified in the development of adaptive and resilient models that integrate technologies such as Digital Twins, Blockchain, and Artificial Intelligence to dynamically manage physical and financial disruptions in supply chains. The study concludes by emphasizing the need for a theoretical shift toward models that go beyond cost minimization and focus on real value metrics, as well as the exploration of more accessible solutions for SMEs. This review contributes a reference framework for academics and practitioners to align the most suitable optimization techniques with strategic financial objectives in supply chain management.</jats:p> - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Medición y comparación de la calidad del empleo en México con un índice multidimensional(Instituto Mexicano de Ejecutivos de Finanzas, A.C. (IMEF), 2025-11-07)<jats:p>El presente artículo busca contribuir al análisis y medición de la calidad del empleo en México, con la construcción de un índice multidimensional con el que se mide y compara a las 32 entidades federativas en dos periodos de tiempo, el primer trimestre de 2012 y el primer trimestre de 2022. La metodología aplicada incluye el Análisis de Componentes Principales y la prueba t pareada para datos relacionados. En la construcción del índice se utilizan datos de la ENOE que presentan una relación positiva con la calidad del empleo. Los resultados muestran baja calidad del empleo en México en ambos lapsos, con una ligera mejoría en estos 10 años en la mayoría de las variables consideradas en el índice. Además, en general, los estados del norte presentan mayor calidad del empleo que el resto del país. Una de las limitaciones en el trabajo es que no se contemplan todos los aspectos de la calidad del empleo, por la disponibilidad de datos. Los hallazgos en este trabajo tienen implicaciones en la política laboral y social del país, particularmente para los estados del sur, que son los que se encuentran más rezagados en ingresos, seguridad social y contratos laborales escritos.</jats:p> - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Uncertainty quantification of compressive stress response in expanded polystyrene foams using evidential neural networks(SAGE Publications, 2026-01-09)<jats:p>This study investigates the application of Deep Evidential Regression in shallow feed-forward neural networks to model and quantify the compressive stress response of expanded polystyrene foam. This foam material, widely utilized for impact protection and packaging, exhibits distinct mechanical behavior characterized by elasticity, plateau, and densification stages during compressive loading. This research adopts a data-driven approach, leveraging artificial neural networks enhanced with evidential learning to predict the distribution of stress responses, thereby addressing both aleatoric and epistemic uncertainties. The methodology involves organizing stress-strain data into training, validation, and test sets, adding noise to simulate real-world conditions, and training models with evidential layers. Results demonstrate that the proposed models maintain high predictive accuracy, with coefficients of determination exceeding 0.90 for noisy test data and above 0.99 for noise-free data. The evidential regression models also provide robust uncertainty quantification, essential for applications where data quality varies. This study’s findings highlight the efficiency and effectiveness of Deep Evidential Regression in enhancing the reliability of stress-strain predictions for EPS foam, offering significant potential for broader application to similar foam materials.</jats:p> - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Declaring Worldviews in SSM for Sustainability & Community Learning(Springer Science and Business Media LLC, 2026-01-08) ;Miles W. Weaver ;Rebecca J. M. Herron ;Kamila Pokorna; Eliseo Vilalta-Perdomo<jats:title>Abstract</jats:title> <jats:p> For over fifty years, Soft Systems ideas and the Soft Systems Methodology (SSM) have played a pivotal role in understanding various problem situations and initiating action. Often tackling the grandest challenges of our time, SSM will retain continued relevance in helping decision-makers address sustainability challenges within organisations and their communities. In this paper, we are concerned with the <jats:italic>meaningful co-creation of sustainable value through community-based learning using SSM.</jats:italic> More specifically, recognising that a sustainability paradigm, characterised by the <jats:italic>need to create a just and safe space for humanity to thrive within the means of a living planet</jats:italic> (as called for by Raworth, 2017), is often marginalised or overlooked. This paradigm presents us with an ethical imperative, complex and messy challenges/issues, and a set of ideals (articulated in the United Nations Sustainable Development Goals) that are significantly off track. This paper employs a variation of the Delphi method, drawing on the authors’ collective interest and experience in applying SSM in communities, to propose a double-loop learning cycle to explore the underlying assumptions of our worldviews and mental models within communities. We suggest that an SSM learning cycle can be enhanced by initiating conversations on relevant <jats:italic>models for sustainability</jats:italic> (such as Doughnut Economics, UN SDGs, and the principles for a Circular Economy), to find common ground for triggering new learning. This idea is contextualised and proposed as the <jats:italic>value(s)-action gap</jats:italic> phenomenon, which can help explain the difference between an individual, an organisation, and/or a community's <jats:italic>intention(s)</jats:italic> and their actual <jats:italic>action(s).</jats:italic> In doing so, find common ground, shift to higher levels of systems consciousness from an ego-centric to an ecosystem level of awareness, engage communities, and take an intergenerational perspective. We suggest that incorporating a double-loop learning cycle into SSM can support organisations and their communities in putting shared values into meaningful action. </jats:p>
