1,721,069 research outputs found
Manual de Laboratorio de Botanica
No full textIl manuale presenta una serie di pratiche didattiche per lo sviluppo della materia botanica per studenti universitari
Acciones tomadas frente al Covid-19 en la ciudad latinoamericana
Full text linkFil: Insuasty-Torres, Angela. Universidad Católica de Colombia; Argentina.Fil: Cárdenas Camargo, María Fernanda. Universidad Católica de Colombia; Argentina.Fil: Rubiano, Melissa María. Universidad Católica de Colombia; Argentina.El presente documento expone las refexiones del proceso de investigación por parte del semillero Espacio Público y Movilidad Urbana que, en esta ocasión, tiene como objetivo identificar las posibles acciones del nuevo urbanismo que atienden a la crisis de salud pública ocasionada por la COVID-19 por medio de la revisión y estudio de las acciones y las estrategias tomadas en algunas ciudades de latinoamérica que han dado uso a políticas sostenibles que venían gestándose y que han ayudado a reforzar la prevención del contagio de la actual emergencia en la salud pública.publishedVersionFil: Insuasty-Torres, Angela. Universidad Católica de Colombia; Argentina.Fil: Cárdenas Camargo, María Fernanda. Universidad Católica de Colombia; Argentina.Fil: Rubiano, Melissa María. Universidad Católica de Colombia; Argentina
City of Prior Lake Minnesota: Sustainability Implementation Plan
No full textCity of Prior Lake Minnesota: Sustainability Implementation PlanCity of Prior Lake Minnesota: Sustainability Implementation PlanFinis, Abby; Schaum, Jessica; Torres, Angela; Shrestha, Grishma; Cannon, John. (2009). City of Prior Lake Minnesota: Sustainability Implementation Plan. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/61703
Soil mycobiota in agroecosystem: influence of land use and management
Full text linkThe present work investigated the biodiversity of soil fungi of agricultural areas differently managed by means of new generation sequencing technologies – NGS. The main object of this research was the analysis of the fungal biota in the Colombian soils, especially that of the upper Andean agro-environment. The study area was located in the region of Boyacá between 2800 and 3200 m asl. and characterized by different form of soil appropriation (apple and peach orchards, 10-year-old wood, and uncultivated grass field). Moreover, a case study has been analysed in Italy where metagenomic of soil micobiota was pictured in a production farm, in three plots differently managed in terms of fertilization, pesticide and tillage application: conventional, organic, no-tillage.
Chapter I represents the general introduction of the thesis. Chapter II focuses on the practices of soil appropriation in the indigenous and urban Colombian contexts, both from biologically and socio-culturally point of view. The southern region of Colombian Amazon was taken into consideration, since this region constitutes an important model for the traditional utilization of natural resources and a fundamental basis for the definition of strategies for ecosystem management.
In Chapter III the focus is on the mycological knowledge of Colombian soils based on data published in scientific research papers. Published data on diversity of native soil microfungi reported for the different natural regions of Colombia were analysed and compared. Some of the most relevant aspects of the country's mycological diversity are discussed and the most frequently registered species and genera, as well as the references for each of them, are presented.
In Chapter IV the soil mycobiota in the Colombian High-Andean agro-environment is assessed through high-throughput sequencing technology. The chapter depicts the entire soil fungal community from qualitative and quantitative point of view in areas with different land use. The bootstrap-based clustering analysis highlighted that different land use strongly influences the soil mycobiota: the uncultivated and cultivated areas are characterized by abundant presence of some exclusive species. Differences in fungal species composition is consistent with the clustering analysis on higher taxonomic hierarchical level composition.
Chapter V reports data collected in a case study planned in the Italian agro-environment context. The results showed that various agricultural management practices and seasonality influence the composition of the soil mycological community in agroecosystems, through a metagenomic picture. Metagenomic analyses show that the highest richness indices correspond to soils under organic production systems, while the non-tillage system showed the most divergent communities, with their own composition, prevalence and seasonal trends.
Finally, the Chapter VI represents a sort of perspective for those areas subjected to conventional management and strongly polluted by pesticides that could be remediated and led towards a sustainable agriculture. The usefulness of soil fungi as key tools for the sustainable bioremediation of chemical pesticides in the soil is discussed as a strategy for the recovery of the quality of degraded agricultural soils.
The results of this study provide insight into the complexity of micobiota of managed soils under different farming systems, with the ultimate goal of better understanding the multiple mechanisms governing soil quality and to develop an environmentally sound management that improves production, allowing the maintenance of ecosystem diversity and the wellness of human communities linked
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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