16 research outputs found
Automatic identification of sites prone to topographic seismic amplification effects by the current seismic codes
No full textCurrent seismic codes provide proxies to estimate seismic amplification effects expected in correspondence of some morphological features. To make possible any empirical validation of these proxies, these features must be univocally identified on the basis of an automatic procedure. To this purpose, based on geomorphological considerations, a GIS-based numerical approach has been developed. The results of a morphometric analysis allowed the correct identification and mapping of the landforms of concern, at a detail corresponding to the resolution of the available digital elevation model (DEM). Some case-studies are provided to show the feasibility of the proposed approach. © 2023 The Author
A suitable girl : Daṇḍin and a meal on the banks of the Kāverī
No full textIn the sixth ucchvāsa of the Daśakumāracarita, Daṇḍin narrates a short story in which a young man coming from Kāñcī is in search for a bride. He finds the suitable girl in a town on the banks of the Kāverī; her beauty is a sign of auspiciousness, and she proves to be able to cook a full meal only with the aid of a limited amount of rice. As for the meal, the passage is extremely interesting from a documentary point of view, because it describes its preparation in full detail. As well known, Daṇḍin is a Pallava poet, who writes around 700 CE; Kāñcī was the Pallava capital at that time, and the full story appears to take place in Pallava territory. The author must know the recipes he is describing quite well. But, besides providing a pleasant short novel, he almost surely had other aims as well. Daṇḍin is always very precise in locating the adventures of his characters, who quite often are of dubious morality. It is most probable that this perfect wife, and the ‘pure’ meal proposed, are also to be read as a way to extol the virtuous women and the Brahmanic customs of the Pallava country, and thus of the Dravidian South
TENDENCIAS DE PUBLICACIÓN EN USTASALUD DESDE 2002 HASTA 2014: UN ANÁLISIS BIBLIOMÉTRICO
No full textObjective: to analyze all papers published in Ustasalud journal since mid 2002 to the first semester of 2014.Methods: a descriptive bibliometric analysis including all articles published in the 24 issues of Ustasalud were reviewed. Study design, type of article, subject area, number of authors, and gender, affiliation, and activity of the first author were determined. Measures of central tendency and dispersion as well as frequencies and proportions were calculated; a Student’s t test or Mann-Whitney U was applied according to the distribution of the variable. The productivity and isolation index were established.Results: 170 papers were published, it was found that more than half of the production (62.9%) was original papers followed by theme review articles (13.5%). The most common study designs were cross-sectional (52.3%) followed by experimental In vitro design (23.4%). Public health and Epidemiology were the main themes of interest with 56 (32.9%) papers. The affiliation of the first author showed that most authors (77.6%) belonged to the Universidad Santo Tomás and 22.4% was affiliated with external institutions. The author with the highest number of publications had a productivity index of 1.4 (Concha SC), the isolation index was 0.8, it meant that 84.7% of authors published only once in this journal.Conclusiones: Ustasalud had published several studies, mostly written by teachers and students affiliated with Universidad Santo Tomás.Objetivo: realizar un análisis bibliométrico de todos los artículos publicados en Ustasalud desde el segundo semestre de 2002 hasta el primero de 2014.Materiales y métodos: se realizó un análisis bibliométrico descriptivo que incluyó la totalidad de artículos publicados en los 24 números que fueron revisados en físico. Se determinó el diseño del estudio, el tipo de artículo, su área temática, el número de autores, el género, la afiliación, y la actividad del primer autor. Se calcularon medidas de tendencia central y dispersión así como frecuencias y proporciones, una prueba t de Student o U. de Mann Whitney fue aplicada según la distribución de la variable. Se calculó el índice de productividad de Lotka y el índice de transitoriedad.Resultados: se publicaron 170 artículos, el artículo original significó más de la mitad de la producción (62,9%) seguido del reporte de caso (17,1%). Los diseños de estudio más frecuentes fueron el de corte transversal (52,3%) y el diseño experimental in vitro (23,4%). Salud pública y epidemiología fueron los temas de interés predominantes con 56 (32,9%) trabajos. La afiliación del primer autor mostró una participación interna del 77,6% y externa del 22,4%; el autor con mayor número de publicaciones obtuvo un índice de Lotka de 1,4 (Concha SC), el índice de transitoriedad fue de 0,8 debido a que 84,7% de autores solo publicaron en una ocasión.Conclusiones: la revista Ustasalud ha divulgado gran cantidad de estudios que en su mayoría corresponden a productos realizados por estudiantes y docentes vinculados con la Universidad Santo Tomás[Rodriguez MJ, Pieruccini JF, Pieruccini SP, Concha SC. Tendencias de publicación en Ustasalud desde 2002 hasta 2014: un análisis bibliométrico. Ustasalud. 2014; 13: 40 - 48
TENDENCIAS DE PUBLICACIÓN EN USTASALUD DESDE 2002 HASTA 2014: UN ANÁLISIS BIBLIOMÉTRICO
No full textObjective: to analyze all papers published in Ustasalud journal since mid 2002 to the first semester of 2014.Methods: a descriptive bibliometric analysis including all articles published in the 24 issues of Ustasalud were reviewed. Study design, type of article, subject area, number of authors, and gender, affiliation, and activity of the first author were determined. Measures of central tendency and dispersion as well as frequencies and proportions were calculated; a Student’s t test or Mann-Whitney U was applied according to the distribution of the variable. The productivity and isolation index were established.Results: 170 papers were published, it was found that more than half of the production (62.9%) was original papers followed by theme review articles (13.5%). The most common study designs were cross-sectional (52.3%) followed by experimental In vitro design (23.4%). Public health and Epidemiology were the main themes of interest with 56 (32.9%) papers. The affiliation of the first author showed that most authors (77.6%) belonged to the Universidad Santo Tomás and 22.4% was affiliated with external institutions. The author with the highest number of publications had a productivity index of 1.4 (Concha SC), the isolation index was 0.8, it meant that 84.7% of authors published only once in this journal.Conclusiones: Ustasalud had published several studies, mostly written by teachers and students affiliated with Universidad Santo Tomás.Objetivo: realizar un análisis bibliométrico de todos los artículos publicados en Ustasalud desde el segundo semestre de 2002 hasta el primero de 2014.Materiales y métodos: se realizó un análisis bibliométrico descriptivo que incluyó la totalidad de artículos publicados en los 24 números que fueron revisados en físico. Se determinó el diseño del estudio, el tipo de artículo, su área temática, el número de autores, el género, la afiliación, y la actividad del primer autor. Se calcularon medidas de tendencia central y dispersión así como frecuencias y proporciones, una prueba t de Student o U. de Mann Whitney fue aplicada según la distribución de la variable. Se calculó el índice de productividad de Lotka y el índice de transitoriedad.Resultados: se publicaron 170 artículos, el artículo original significó más de la mitad de la producción (62,9%) seguido del reporte de caso (17,1%). Los diseños de estudio más frecuentes fueron el de corte transversal (52,3%) y el diseño experimental in vitro (23,4%). Salud pública y epidemiología fueron los temas de interés predominantes con 56 (32,9%) trabajos. La afiliación del primer autor mostró una participación interna del 77,6% y externa del 22,4%; el autor con mayor número de publicaciones obtuvo un índice de Lotka de 1,4 (Concha SC), el índice de transitoriedad fue de 0,8 debido a que 84,7% de autores solo publicaron en una ocasión.Conclusiones: la revista Ustasalud ha divulgado gran cantidad de estudios que en su mayoría corresponden a productos realizados por estudiantes y docentes vinculados con la Universidad Santo Tomás[Rodriguez MJ, Pieruccini JF, Pieruccini SP, Concha SC. Tendencias de publicación en Ustasalud desde 2002 hasta 2014: un análisis bibliométrico. Ustasalud. 2014; 13: 40 - 48
A model for the Holocene extinction of the Mammal Megafauna in Ecuador
No full textThis paper presents the results of multidisciplinary research in the Ecuadorian coastal regions, with particular emphasis on the Santa Elena Peninsula. The new evidence, together with previous data gathered on the Ecuadorian cordillera during the last 12 years, allows us to formulate a model that accounts for most of the mammal megafauna extinction at the Pleistocene/Holocene transition. After the illustration of geomorphological and paleontological evidences of the area of the Santa Elena Peninsula (and other sites), and of a summary of the paleoclimatic data, the main results and conclusions of this work are: (1) Late Pleistocene mammal assemblages survived in the Ecuadorian coast until the Early Holocene sea level rise; (2) Prior to the extinction of most of the megafauna elements (mastodons, ground sloths, equids, sabre-tooth felids), the mammal communities at Santa Elena Peninsula comprise elements with differing habitat requirements, attesting conditions of high biological pressure; (3) At the El Cautivo site (Santa Elena Peninsula), we have discovered Holocene sediments containing the first known occurrences in Ecuador of lithic artifacts that are associated with mammal megafauna remains; (4) During the last 10,000 years, the coastal region of Ecuador underwent significant changes in vegetation cover. At the Pleistocene/Holocene transition the climate changed from very and conditions to humid conditions.
Our data indicates that the megafauna definitively abandoned the Cordillera areas around 12,000 yr Bp due to the increasing aridity, and subsequently migrated to coastal areas where ecological conditions still were suitable, Santa Elena Peninsula and mainly Amazonian areas 9 being typical. We conclude that the unusual high faunal concentrations and the change to dense vegetation cover (due to a rapid increase in precipitation in the lower Holocene) at 8000-6000 yr BP, caused the final collapse and extinction of most elements of the mammal megafauna. Vegetation cover in the area of Santa Elena should have been extensive, and even more so in the Guayas and Guayabamba valleys. The newly densely vegetated areas, and fluvial barriers, transformed the refugia into lethal traps for large animals already under biological stress. such as were mastodons, ground sloths and equids. Within the megafauna, only tapirs and artiodactyla (Cervidae and Camelidae) survived.
In our opinion, the most suitable model to justify the great crisis of the mammal megafauna at the Pleistocene/Holocene transition, also in areas out of Ecuador, must be mainly based on the three parameters: high aridity, high humidity and geographic factors. (C) 2002 Elsevier Science Ltd. All rights reserved
Reassessing the Middle Palaeolithic lithic technology of Grotta Romanelli (Lecce, southern Italy)
No full textLocated in the southernmost part of the Italian Peninsula, specifically the Salento area in the Apulia region, Grotta Romanelli (Lecce) is one of Italy's most significant Palaeolithic sites. It shows evidence of human occupation from the Middle to the late Upper Palaeolithic. This study presents a re-analysis of historical lithic collections and also includes a new analysis of artefacts from recent excavations within Middle Palaeolithic Inside Stratigraphic Unit 3 (ISU3). This unit, formerly referred to as level G or “terre rosse”, is dated to at least the MIS 5 interglacial period. Our findings offer a revised perspective on past interpretations of Grotta Romanelli's Middle Palaeolithic lithic industry. Interpretations of this industry have varied over time, especially regarding the presence of Levallois core technology — an important cultural and chronological marker. The initial classification in the 1970s described the assemblage as Charentian Mousterian of Quina type, characterized by the absence of Levallois technology and the exclusive use of local materials. However, studies from the 2000s suggested a predominance of Levallois technology, along with a noteworthy, albeit limited, use of non-local materials. Our lithic analysis suggests instead a focus on expedient flake production using exclusively locally available raw materials, with no evidence of the Levallois method. These results contrast with previous hypotheses, indicating a distinctive role for Grotta Romanelli's lithic technology within the Middle Palaeolithic cultural framework of southern Italy. © 2025 The Author
Geological and geotechnical models definition for 3rd level seismic microzonation studies in Central Italy
No full textThe 2016–2017 seismic events that struck central Italy led the Government to carry out a project to produce the third level Seismic Microzonation studies in 138 municipalities. These activities have involved many experts in different disciplines such as geology, geomorphology, geophysics, seismology and geotechnical engineering. This project represented the first opportunity to perform nationally coordinated third level Seismic Microzonation studies over a wide area in a quite short time (6 months). It provided the chance to improve methodological procedures, to test the reliability of methods and models for site response analyses and to produce a huge amount of validated data. This paper focuses on the contribution of geological disciplines and concerns: (a) the definition of the main “morphostructural domains” of the Central-Northern Apennines; (b) the creation of an archive of all the lithostratigraphic units occurring in the study area with their conversion into engineering-geological units and their distribution in the different morphostructural domains; (c) the construction of the reference geological and geotechnical models, which are essential to classify the territory into seismically homogeneous microzones and to perform the successive 1D and 2D numerical analyses of the local site response. The geophysical dataset acquired for the study allowed a first statistical characterization of the Vs values typical of the engineering-geological units identified in this study. Some examples of the recurrent geological and geotechnical models are shown to explain the complexity and variety of the geological and geomorphological features of the investigated area and to highlight the different seismostratigraphic behavior of rocks and cover terrains. The analysis of third level Seismic Microzonation data made it possible to identify recurrent subsoil models and to note the main stratigraphic and morphological control-factors of the ground motion modification in the different morphostructural domains
Author Correction: Stratigraphic reassessment of Grotta Romanelli sheds light on Middle-Late Pleistocene palaeoenvironments and human settling in the Mediterranean
No full textRecursos hídricos, poluição e condições socioambientais nas Bacias Hidrográficas do Pirapó e Paranapanema III e IV : uma análise sob a perspectiva do desevolvimento sustentável
No full textTherefore, the thesis was to analyze the use of water resources and the current socio-economic conditions of selected municipalities in the watershed of Pirapó (Arapongas, Colorado, Maringa and Paranacity), Paranapanema III (Bela View of Paradise, Cambridge and Miraselva) and Paranapanema IV (Alto Parana, Paranavaí and Terra Rica). It is understood that the socioeconomic conditions of the population living in these areas are reflected in the use and pollution of water resources in the region. Methodologically it is an empirical approach, and understand the literature and field research with a questionnaire prepared by the author in selected municipalities realized she authored in July to October / 2013. The survey results led to the following conclusions: the study area has abundant water resources and the respondents are concerned about erosion and compaction problems; deforestation border rivers and silting of rivers; improper disposal of garbage; rivers polluted by industrial and domestic sewage. In urban areas all families interviewed have electricity, running water, street cleaning; mostly sewage network is available. In Rural Area, there was significant rate of use of wells, no sewage system, however, are available Septic, street cleaning every two weeks and, mostly, respondents separates waste. On the other hand, there is recovery of riparian vegetation on the properties 1-5 hectares and prevailing practices in the farms of tillage, crop rotation, chemical fertilization, organic fertilization, burning, the use of transgenic seeds, and integrated management. The challenge is to contribute to the quality of life for residents, a greater participation of citizens in policy management, to a breakthrough in the economy, environmental preservation and conservation of the ecosystem in the Watershed of Pirapó, Paranapanema III and IV. Also so, we note that it is not enough to comply with laws and decrees to ensure sustainability, but greater efforts should be directed in relation to the spread of the current status information of the Watershed Pirapó, Paranapanema III and IV as a whole. Thus, the local urban and rural population will know why and how they cooperate in economic activities while preserving the environment and sustainability they Water resources an Watershed.Esta Tese consistiu em analisar o uso dos recursos hídricos e as condições socioeconômicas atuais dos municípios selecionados das bacias hidrográficas do Pirapó (Arapongas, Colorado, Maringá e Paranacity), Paranapanema III (Bela Vista do Paraíso, Cambé e Miraselva) e Paranapanema IV (Alto Paraná, Paranavaí e Terra Rica). Entende-se que as condições socioeconômicas da população residente nestas áreas se refletem no uso e na poluição dos recursos hídricos da região. Metodologicamente, trata-se de uma abordagem empírica, e compreendeu a pesquisa bibliográfica e a pesquisa de campo com aplicação de questionário com questões fechadas, para a população nos municípios selecionados, nos meses de Julho a Outubro de 2013. Os resultados da pesquisa permitiram as seguintes conclusões: a área de estudo possui abundância de recursos hídricos e os entrevistados têm preocupação com os problemas de erosão e compactação do solo; desmatamento beira rios e assoreamento dos rios; disposição inadequada do lixo; rios poluídos por esgotos doméstico e industrial. Na área urbana todas as famílias entrevistadas dispõem de luz elétrica, água encanada, limpeza das vias públicas; em sua maioria, a rede de esgoto está disponível. Na área rural constatou-se índice significativo de utilização de poços, sem rede de esgoto, entretanto, estão disponíveis a fossa séptica, a limpeza das vias públicas e em sua maioria, os entrevistados separam o lixo. Por outro lado, não há recuperação de mata ciliar nas propriedades de 1 a 5 hectares, e prevalecem as práticas nas propriedades rurais de plantio direto, rotação de culturas, adubação química, adubação orgânica, queimada, o uso de sementes transgênicas e manejo integrado. O desafio está em contribuir para a qualidade de vida dos residentes, uma maior participação dos cidadãos na gestão de políticas para um avanço na economia, preservação do meio ambiente e conservação do ecossistema nas bacias hidrográficas do Pirapó e do Paranapanema III e IV. Da mesma forma, salienta-se que não basta o cumprimento de Leis e Decretos para garantir a sustentabilidade, mas sim maiores esforços devem ser direcionados no que se refere à disseminação das informações da atual situação das bacias hidrográficas estudadas. Assim, a população urbana e rural local saberá como cooperar nas atividades econômicas, preservando o meio ambiente e a sustentabilidade das águas nas bacias.vi, 145 [5]
Obstacle Crossing With Dual Tasking Is A Danger For Individuals With Alzheimer's Disease And For Healthy Older People
No full textBackground/Objective: The aim of this study was to analyze the effects of dual tasking on obstacle crossing during walking by individuals with Alzheimer's disease (AD) and by healthy older people. Methods: Thirty four elderly individuals (16 healthy subjects and 18 individuals with AD) were recruited to participate in this study. Three AD individuals and one control participant were excluded due to exclusion criteria. The participants were instructed to walk barefoot at their own speed along an 8 m long pathway. Each participant performed five trials for each condition (unobstructed walking, unobstructed walking with dual tasking, and obstacle crossing during walking with dual tasking). The trials were completely randomized for each participant. The mid-pathway stride was measured in the unobstructed walking trials and the stride that occurred during the obstacle avoidance was measured in the trials that involved obstacle crossing. Results/Conclusion: The behavior of the healthy elderly subjects and individuals with AD was similar for obstacle crossing during walking with dual tasking. Both groups used the 'posture first' strategy to prioritize stability and showed decreased attention to executive tasking while walking. 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