1,721,010 research outputs found
Impact of the sustainable agricultural practices for governing soil health from the perspective of a rising agri-based circular bioeconomy
Full text linkSoil is a precious and nonrenewable source for agroecosystems of which own health state over time is becoming a focus of global concern. A healthy soil is a harmonious and very complex social system with a good structure, an optimal functional state, and an efficient buffering capacity to maintain a dynamic balance among all produc- tivity factors. There is an urgent need to develop new approaches for the sustainable management of soil quality in depleted soils from a long-term perspective for increasing agricultural productivity and maintaining food security due to global population expansion. Since high crop yield mainly depends on the improvement of soil quality, further efforts must be addressed to develop advanced technologies/processes in reusing waste biomass accordingly with the circular bioeconomy principles. Although the knowledge of relationships between intrinsic factors of soil fertility and crop productivity is the baseline for the optimal soil management, this issue is nevertheless overlooked by stakeholders. Soil organic matter (SOM) associates carbon availability with the plant nutrients (mainly nitrogen, phosphorus, and potassium) leading to the strongest positive impacts of the envi- ronmental functions and food production. Unfortunately, there is a progressive trend to lose the SOM stock, so altering the biological functions of the soils. Despite, farmer overlooks the mechanisms for preserving SOM accumulation by adopting inappropriate practices to counteract soil decline consequently to climate change and deterioration of agroecosystems. A wide spread of microplastic and nanoplastic pollutants (MNPs) in the envi- ronment have added further concerns due to their potentially hazardous risks for soil health thanks to their ubiquitousness and persistence. Nonetheless, the interactions of MNPs with the soil components, microbial communities, plants, and fauna that could determine the strongest impacts on the nutrient availability and food security are still poorly explored. This review work launches some challenges to reader by providing practical solutions, viewpoints, future challenges, and new perspective for restoring soil health by contrasting soil decline from a long-term perspective in organic farming systems in a sustainable agri-based circular bioeconomy syste
Teaching soil science: The impact of laboratory and field components on the knowledge and attitude toward soil
No full textUnraveling efficient strategies for inducing systemic resistance in crops for managing biotic stress
Full text linkHeterotrophic nitrification in soils: Approaches and mechanisms
No full texthttp://dx.doi.org/10.13039/501100018647 RUDNhttp://dx.doi.org/10.13039/501100003443 Ministry of Science and Higher Education of the Russian Federationhttp://dx.doi.org/10.13039/501100015659 Southern Federal Universit
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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