12,894 research outputs found
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El texto presenta una reflexión antropológica sobre las perspectivas indígenas/andinas sobre el extractivismo en la provincia de Jujuy (Argentina), en el marco de las protestas de 2023 en contra de la modificación del texto constitucional. Se avanza sobre las ideas de Permiso y Respeto como parte de una cosmopraxis inevitable de relación con el entorno vivo, demostrando las distancias que poseen con el sentido común estatal-extractivista-académico.Fil: Miranda Pérez, José María. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Antropología de Córdoba. Universidad Nacional de Córdoba. Facultad de Filosofía y Humanidades. Instituto de Antropología de Córdoba; ArgentinaFil: Pautasso, Pablo. Universidad Nacional de Córdoba. Facultad de Filosofía y Humanidades; ArgentinaFil: Pazzarelli, Francisco Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Antropología de Córdoba. Universidad Nacional de Córdoba. Facultad de Filosofía y Humanidades. Instituto de Antropología de Córdoba; Argentin
MABS validation through repeated execution and data mining analysis
Agent Based Modelling is the most interesting and advanced approach for simulating a complex system: in a social context, the single parts and the whole are often very hard to describe in detail. Besides, there are agent based formalisms which allow to study the emergency of social behaviour with the creation and study of models, known as artificial societies. Thanks to the ever increasing computational power, it's been possible to use such models to create software, based on intelligent agents, which aggregate behaviour is complex and difficult to predict, and can be used in open and distributed systems. Data mining is born in the last decades in order to help users in finding useful knowledge from the otherwise overwhelming amount of data available nowadays from the web and the data collected every day by companies. Data Mining techniques can therefore be the keystone to reveal non-trivial knowledge expressed by the initial assumption used to build the micro-level of the model and the structure of the society of agents that emerged from the simulation
Are the living collections of the world's botanical gardens following species-richness patterns observed in natural ecosystems?
Pautasso M. and Parmentier I. 2007. Are the living collections of the world's botanical gardens following species-richness patterns observed in natural ecosystems? Bot. Helv. 117: 15 - 28. Botanical gardens aim to promote the awareness, study and conservation of plant species diversity, but little is known about the species diversity of botanical gardens themselves. We therefore investigated whether the species richness of the world's botanical gardens is related to their size, age and geographical location by compiling data from gardens in 124 different countries. The data show that even in these highly managed ecosystems, species richness can be described in terms of a relatively small number of large-scale patterns. As with most natural ecosystems, there were positive species-area and species-age relationships. There was also a positive latitudinal gradient in species richness, which contrasts with the trend observed in natural ecosystems. This discrepancy may be due to the use of heated greenhouses at high latitudes, the rarity of old botanical gardens in the tropics, and the problem of poverty in developing countries, where most hotspots of plant biodiversity are located. There is thus a need to allocate more funds to botanical gardens in species-rich regions. This study also calls for an increase in the coordination of data management between botanical garden
Species-richness patterns of the living collections of the world's botanic gardens: A matter of socio-economics?
Background and AimsThe botanic gardens of the world are now unmatched ex situ collections of plant biodiversity. They mirror two biogeographical patterns (positive diversity-area and diversity-age relationships) but differ from nature with a positive latitudinal gradient in their richness. Whether these relationships can be explained by socio-economic factors is unknown. MethodsSpecies and taxa richness of a comprehensive sample of botanic gardens were analysed as a function of key ecological and socio-economic factors using (a) multivariate models controlling for spatial autocorrelation and (b) structural equation modelling. Key ResultsThe number of plant species in botanic gardens increases with town human population size and country Gross Domestic Product (GDP) per person. The country flora richness is not related to the species richness of botanic gardens. Botanic gardens in more populous towns tend to have a larger area and can thus host richer living collections. Botanic gardens in richer countries have more species, and this explains the positive latitudinal gradient in botanic gardens' species richness. ConclusionsSocio- economic factors contribute to shaping patterns in the species richness of the living collections of the world's botanic gardens. © The Author 2010. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved. For Permissions, please email: journals. permissionsoxfordjournals.org.SCOPUS: ar.jinfo:eu-repo/semantics/publishe
Facades of the Libreria di San Marco in Venice, The: An Interpretation of the Design Process
"A new work in which I propose an interpretation of the design process Sansovino used to create the magnificent facades of the Libreria di San Marco in Venice, a masterpiece of Renaissance architecture." Sent to Marquand librarian by author Dec. 202
A Rare Case of Intramediastinal Humeral Head Fracture Dislocation Through the Thoracic Inlet
ABSTRACT Intramediastinal fracture dislocation of the humeral head due to a blunt trauma is very rare. It may be accompanied by local and systemic injuries associated with high‐energy trauma. Only one case has been reported in the literature; therefore, an appropriate treatment modality remains unclear. We present a case of a 71‐year‐old woman involved in an accidental fall who sustained an intramediastinal humeral head fracture dislocation through the thoracic inlet, without damaging the chest wall, causing the thoracic duct rupture and requiring three consecutive surgical procedures as treatment
Art without an Author: Vasari’s Lives and Michelangelo’s Death
Monografia sulla rappresentazione di Michelangelo nelle due edizioni delle Vite, sulla storia del libro e la questione della sua paternitàBook dedicated to the representation of Michelangelo in Vasari's Lives of the Artists, to the history of the book, and to the problem of its authorshi
Long-term survival outcomes of Wagner™ conical stems in crowe non-IV hip dysplasia: a retrospective analysis
BackgroundTotal hip arthroplasty (THA) is one of the most frequently performed orthopedic procedures. Developmental dysplasia of the hip (DDH) presents specific anatomical challenges that require tailored implant designs. Wagner™ conical stems were developed to address the morphological alterations of dysplastic femur, offering potential advantages in stability and functional restoration. This study assesses the long-term survival and clinical outcomes of Wagner™ conical stems in patients with Crowe non-IV DDH.Materials and methodsThis retrospective study included primary THAs performed between 2003 and 2015 using Wagner™ conical stems exclusively in patients with DDH. Only cases with complete clinical and radiographic follow-up were analyzed, excluding those lost to follow-up or revised. The evaluated outcomes were prosthetic survival rate, clinical performance assessed with the Modified Harris Hip Score (mHHS), and radiographic findings at final follow-up.ResultsForty-five patients (57 hips) met the inclusion criteria. The mean age at surgery was 56.5 years (range, 33–76), with a mean follow-up of 15 years (range, 8–20). Kaplan–Meier analysis showed a survival rate of 95.7% at 10 years and approximately 80.5% at 20 years, with an overall survival rate of 89.5% at the final follow-up. The main cause of failure was aseptic loosening, followed by infection, recurrent dislocation, and metallosis. Among hips with retained implants, 86.3% (44/51) achieved an mHHS > 70, indicating satisfactory functional recovery. The mean mHHS was 88.6 ± 14.3 (Range, 62–100), with a median of 92 and a mode of 100.ConclusionWagner™ conical stems provide durable fixation and favorable long-term functional outcomes in Crowe non-IV DDH, with high survival rates and low complication incidence over extended follow-up
A user modeling pipeline for studying polarized political events in social media
This paper presents a user modeling pipeline to analyze discussions and opinions shared on social media regarding polarized political events (e.g., public polls). The pipeline follows a four-step methodology. First, social media posts and users metadata are crawled. Second, a filtering mechanism is applied to filter spammers and bot users. As a third step, demographics information is extracted out of the valid users, namely gender, age, ethnicity and location information. Finally, the political polarity of the users with respect to the analyzed event is predicted. In the scope of this work, our proposed pipeline is applied to two referendum scenarios (independence of Catalonia in Spain and autonomy of Lombardy in Italy) in order to assess the performance of the approach with respect to the capability of collecting correct insights on the demographics of social media users and of predicting the poll results based on the opinions shared by the users. Experiments show that the method was effective in predicting the political trends for the Catalonia case, but not for the Lombardy case. Among the various motivations for this, we noticed that in general Twitter was more representative of the users opposing the referendum than the ones in favor.Accepted Author ManuscriptWeb Information System
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