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NDVI – BASED ECOLOGICAL DYNAMICS OF VEGETATION AND ITS RELATIONSHIP TO CLIMATE CHANGE OF OSUN OSOGBO SACRED GROVE
No full textREIMAGINING CONTEMPORARY ENVIRONMENTAL
CONSERVATION ISSUES IN SUSTAINABLE
DEVELOPMENT GOALS
Proceedings of the 5th Edition of the World Environmental Conservation Conference
6th & 7th June 2022
Editors: Agele, S.O (Ph.D.) and Oladeji, S.O (Ph.D.
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
Assessment of nitrate, phosphate and sulphate levels in wastewater from Muhammad Ayuba dam in Kazaure, Jigawa state, Nigeria
Get PDFIn the continuation of the evaluation of the physicochemical parameters of wastewater of Muhammad Ayuba dam in Kazaure, Nigeria, this investigation was carried out for the assessment of certain nutrients parameters i.e., nitrate, phosphate and sulphate that are primarily responsible for the eutrophication. This investigation was conducted during November, 2019 to January, 2020 (Harmattan season) to measure the content of nitrate, phosphate and sulphate ions in the wastewater collected from Muhammad Ayuba dam. During the study, standard techniques were used to determine the content of nitrate, phosphate and sulphate using spectrophotometer at specific wavelengths in determination of parameter of interests. The results obtained indicated that the concentrations were in the range of 78.50 – 88.40 mg/L for nitrate, 55.70 – 62.40 mg/L for phosphate and 91.40 – 100.20 mg/L for sulphate ions, respectively. The contents of nitrate, phosphate and sulphate in the wastewater exceeded the limit set by FAO/WHO for these anions in wastewater with exception of sulphate ions that was below the limit. Pearson correlation (r = 0.484) of the different anions indicated that their level of contamination might be traced to the same source means runoff from fertilizer application. Therefore, the water of the dam is majorly polluted with domestic wastes and absolutely rich in sulphate ions especially detergents from nearby houses. The study also revealed gradual accumulation of anions in the wastewater of the dam suggested more pronounced pollution in it. Thus, regular monitoring of these ions must be required to evaluate their environmental impacts and possible potential risks
Evaluation of nickel levels in wastewater, soil and vegetable samples grown along Kubanni stream channels in Zaria, Kaduna State, Nigeria
Get PDFThe concentration of nickel was evaluated in wastewater, soil and vegetable (carrot, lettuce, onion, spinach, cabbage, tomato and okra) samples that were collected on seasonal basis from January, 2013 to September 2014 along Kubanni stream channels in Zaria. The results showed nickel concentrations in wastewater were in the range of 7.69 – 38.46 mg/L for the year 2013 and 7.68 – 27.04 mg/L in 2014; 1.92 – 21.37 mg/Kg for the year 2013 and 8.24 – 24.32 mg/Kg in 2014 for the soil while the vegetables had concentrations in the range of 6.97 – 18.79 mg/Kg for the year 2013 and 3.78 – 18.27 mg/Kg in 2014. Statistical analysis revealed no significant difference in nickel levels across the locations and seasons for wastewater, soil and vegetables analyzed. Pearson correlation showed substantial (r = 0.631) relationship between nickel levels in wastewater for the year 2013 and 2014, negative (r = -0.284) relationship was obtained for the soil between these two years whereas substantial (r = 0.634) relationship was obtained for vegetables cultivated in 2013 and that of 2014, respectively. Thus, nickel concentrations obtained in this study was higher than maximum contaminant levels set by Standard Organizations such as WHO and FAO for wastewater whereas the soil and vegetables were less to limits set by these bodies
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
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
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