436 research outputs found

    Soil Disturbance Increases Soil Microbial Enzymatic Activity in Arid Ecoregions

    Get PDF
    Functional diversity of the soil microbial community is commonly used in the assessment of soil health as it relates to the activity of soil microflora involved in carbon cycling. Soil microbes in different microenvironments will have varying responses to different substrates, thus catabolic fingerprint information of each location-specific community can be obtained. The purpose of this study was to evaluate total-soil enzymatic activity profiles across three disturbance regimes in an arid desert grassland in the Southwestern United States. Microbial enzymatic activity was measured using the MicroResp™ system, which measures respiration of microbes within whole soil samples supplemented with various carbon sources (simple and polymeric sugars, amino acids, carboxylic acids, and fatty acids - tests run in the absence of light). Total bacterial diversity was assessed by 16s DNA pyrosequencing. Microbial activity was greatest and most variable in sites exposed to disturbance (grazing, natural gas extraction). Decoupling the C cycle from the C-fixing cyanobacteria may induce more diverse C uptake pathways associated with a more diverse microbial population. Similarities in taxonomic diversity and C substrate utilization patterns show that, for arid lands, any degradation-enhanced heterogeneity in soil’s biotic and abiotic parameters may drive changes in soils towards higher functional diversity to adapt to the disturbance

    Evaluating the relationship between user interaction and financial visual analysis

    Get PDF
    It has been widely accepted that interactive visualization techniques enable users to more effectively form hypotheses and identify areas for more detailed investigation. There have been numerous empirical user studies testing the effectiveness of specific visual analytical tools. However, there has been limited effort in connecting a user’s interaction with his reasoning for the purpose of extracting the relationship between the two. In this paper, we present an approach for capturing and analyzing user interactions in a financial visual analytical tool and describe an exploratory user study that examines these interaction strategies. To achieve this goal, we created two visual tools to analyze raw interaction data captured during the user session. The results of this study demonstrate one possible strategy for understanding the relationship between interaction and reasoning both operationally and strategically. Index Terms: H.5.2 [Information Interfaces And Presentatio

    El Noviciado de Córdoba de la Provincia Jesuítica del Paraguay : Historia y recuperación arqueológica, 1607-1990

    Get PDF
    El libro trata la historia de los restos arqueológicos conocidos como la “Cripta Jesuítica del Noviciado Viejo”. Denominación poco afortunada a la vista de las revelaciones históricas que contiene el presente texto. Page aborda los diferentes sitios donde estuvo ubicado el Noviciado de la Provincia Jesuítica del Paraguay, haciendo hincapié en el proyectado por el maestro-arquitecto Johann Kraus, sobre la base de una casa donada por los hermanos jesuitas Ignacio y Francisco Mujica. También evoca los singulares destinos ulteriores que tuvo, donde funcionó la Casa de Ejercicios, Hospital de Bethlemitas… Incluye la vida de los primeros novicios y las no pocas penurias de los jóvenes exiliados en 1767. El tiempo, la memoria colectiva y la intervención del hombre, hicieron desaparecer el edificio del siglo XVIII. Después de mucho tiempo y como un hecho casual, parte del mismo fue redescubierto debajo de la avenida Colón, siendo oportunamente recuperado en 1990

    Journals\u27 Policies on Compliance with the NIH Public Access Policy

    Get PDF
    This resource provides information about select journals\u27 policies related to the NIH Public Access Policy. Many of these journals are based in the social sciences and publish population research articles. Authors who publish in a journal listed below can quickly determine whether the publisher has a policy, who must submit the manuscript and which version to submit to PubMed Central, as well as the embargo period. Journal titles were gathered from the ISI Journals Citation Reports in the subject categories of Demography, Sociology, Economics, and Gerontology. Additional titles were supplied by members of the Association for Population/Family Planning Libraries and Information Centers-International. updated 3/10/200

    Journals\u27 Policies on Compliance with the NIH Public Access Policy

    Get PDF
    This resource provides information about select journals\u27 policies related to the NIH Public Access Policy. Many of these journals are based in the social sciences and publish population research articles. Authors who publish in a journal listed below can quickly determine whether the publisher has a policy, who must submit the manuscript and which version to submit to PubMed Central, as well as the embargo period. Journal titles were gathered from the ISI Journals Citation Reports in the subject categories of Demography, Sociology, Economics, and Gerontology. Additional titles were supplied by members of the Association for Population/Family Planning Libraries and Information Centers-International. updated 3/10/200

    La reforma del aborto en España : perspectivas de un debate (re)emergente

    Get PDF
    Pertenece a la colección Religión, Género y Sexualidad / dirigida por Juan M. Vaggione ; v.8De manera creciente, desde finales del 2013 el escenario español visibiliza no sólo las marchas y contramarchas en relación a derechos sexuales y reproductivos sino cómo las disputas se renuevan poniendo de relieve la necesidad de reflexionar sobre las dimensiones que se ponen en juego en un debate sociopolítico contemporáneo. Los trabajos que integran este libro, surgen al calor del debate público abierto en España en torno a la reforma de los marcos regulatorios vigentes sobre salud reproductiva e interrupción voluntaria del embarazo. Discusiones que demandan marcos analíticos que permitan pensar estos procesos considerando tanto sus particularidades coyunturales como sus dimensiones comunes. Los análisis que integran este libro abordan desde diferentes perspectivas, diferentes dimensiones de un debate que no sólo involucra la norma explícita formal (la ley) sino lo que ese mismo debate promueve como sancionable, cuestionable. El contexto español sirve, de esta manera, como disparador de reflexiones que abren el panorama privilegiando miradas múltiples. La participación de personas provenientes de distintas disciplinas enriquece la conexión entre los trabajos poniendo de relieve la necesidad de reflexiones críticas constantes y alertando sobre la necesaria recreación de la praxis política, en particular cuando visiones más restrictivas buscan impactar sobre los marcos legales vigentes, opacando las relaciones de poder y subordinación en las que el derecho a decidir de las mujeres se actualiza como operación de control
    corecore