1,720,953 research outputs found
2020 Aquaponics Industry Survey Dataset
No full textThis dataset contains the responses from an international aquaponics industry survey conducted from December 2019 to June 2020. Responses (N = 433) were collected using a mixture of question formats to obtain qualitative and quantitative data. Respondents differentiated themselves as hobbyist, producer, educator, or supporting group. All groups received the introductory block (21 questions), training/work hours (2), fish production (11), plant production (14), food safety (7), demographics (8) and a wrap-up block to collect voluntary survey feedback and contact information (4). Educators received 10 classroom usage questions and producers received 23 additional questions about business and marketing. This data should be used to inform research, teaching, and Extension efforts. This data has been de-identified to protect the confidentiality of the respondents. Please contact the author with questions.Ye
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Needs Assessment and Practical Solutions for the Aquaponics Industry
Get PDFThis research serves as a needs assessment for the aquaponic industry, encapsulating the challenges, knowledge levels, information resource usage, production practices, and production scales of hobbyists, producers, and educators. An online survey was used to collect data from stakeholders including demographics, background, motivations, experiences, challenges, perceptions of core competency areas, usage of informational resources, aquaponic system styles, components, and production practices, fish and plant species produced, system area, volume, production output, and investment. This data was used to evaluate the current state of the aquaponics industry, create guidelines for newcomers, assess needs, and provide recommendations for improving the industry going forward. Major findings from this research are as follows:
Study 1 - Top challenge areas experienced by stakeholders include 1 - operations and management, 2 - facilities, location, and system design, 3 - knowledge and educational resources, 4 - funding, 5 - economic viability, 6 - plant culture, 7 - marketing and distribution, 8 - fish culture, 9 - human factors, and 10 - regulations and certifications.
Study 2 - The top needs for knowledge and information access based on the mean weighted discrepancy score (MWDS) for all groups were in the areas of fish health and disease (FHD) and plant pest, disease, and nutrient deficiencies (PPD), whereas food safety (FS), water chemistry (WC), system maintenance (SM), and system design (SD) needs were higher for some stakeholder groups than others.
Study 3 - The most commonly used information sources overall were internet and videos, books and library, and classes and workshops. The most commonly desired information resource overall were other aquaponic growers, extension agents, classes/workshops, extension publications, and manufacturers/suppliers. The three most unused resources across all groups were friends and family, consultants, and social media.
Study 4 - Overall, aquaponic systems were largely homemade/do-it-yourself, especially for hobbyists, while producers and educators often used a hybrid of homemade and commercially available technology. Funding sources were primarily personal funds, government grants, and private investor funds. Coupled systems were the most popular overall, which included recirculating aquaculture systems and either deep-water culture or media bed hydroponic units. Plant lighting sources included sunlight, light emitting diode, and fluorescent. Water sources were typically municipal or wells. Vegetable produce was the most common product sold, followed by training and education, food fish, and microgreens. Tilapia (Cichlidae) was the most commonly grown fish species across all groups, followed by ornamental fish (e.g. koi and goldfish; Cyprinidae) with 16 other species being reported. The most commonly grown crops overall were lettuce, leafy greens, basil, tomatoes, peppers, and herbs with many additional lesser-grown crops reported. Diversification of fish and plant crops with emphasis on high value and low per-unit production cost over time will be critical to profitability going forward.
Study 5 - Fish and plant area, volume, annual production output and investment cost were greatest for producers. System sizes were different by background setting with rural systems generally being larger, more productive, and more expensive than urban systems, and suburban systems falling in between. The relationship between system area and volume, production output and investment were positive and linear when Ln-transformed. Producer systems generally had the greatest variance explained in the regression model, and hobbyists had the least variance. The ratio of plant area to fish area and plant to fish production output were highest for producers, demonstrating that producers tend to focus on plant production. Investment per unit area and volume were highest for producers, while investment per unit production was greatest for hobbyists. Greater industry-combined production area, volume, and invested dollars compared to previous studies suggest the aquaponic industry is growing. Attention to system scale optimization with an emphasis on high value and low per-unit production cost will be critical to the long-term profitability of the industry
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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