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Profitability and Economic Efficiency in Gillnet Fishing in Guimaras Strait and Adjacent Waters, Western Visayas, Philippines
Get PDFGillnets contribute a sign if i cant portion of fish
production in the Philippine fisheries sector, as well as in
Guimaras Strait and adjacent waters. It has been found out
however, that many small-scale or municipal fishermen, to which
the gillnet fishermen belong are living below the poverty
threshold. Moreover, a number of studies and available
secondary data showed the evident overfishing in Guimaras
Strait and adjacent waters.
This study examines the socio-economic profile,
profitability and economic efficiency in gillnet fishing in
Guimaras Strait and adjacent waters.
The socio-economic profile revealed that most of the
gillnet fishermen attained elementary or high school level of education. Average household size was 5.7 members while 71 percent of the households were dependent on only one income
earner in the family. Sixty one percent of the households
depended on fishing as the only source of income. The study
also found that there were other employment alternatives, aside
from fishing, which were available for the gillnet fishermen.
Costs and earnings analysis showed that both drift
gillnets and bottomset gillnets earned fishing incomes below
that of the national poverty threshold. Encircling gillnets,
meanwhile, earned 68675.68 pesos, the highest of the three gear
types.
The normalized restricted translog profit function was
used to assess whether gillnet fishermen were able to maximize
profits and to examine relative economic efficiency. The
results which was estimated using the seemingly unrelated
regressions (SUR) technique, revealed that all gillnets were
not able to maximize profits based on pooled regressions and
indi vidual gear type regressions. Encircling gillnets were
found to be the most economic efficient while the drift
gillnets were found to be the least economic efficient.The price elasticity of demand for labour was found to be
inelastic (-0.79). Own price elasticity for fuel was close to
unity (-0.96 ), while that for crew provisions was quite elastic
(-1. 38 ). Cross price elasticity estimates revealed that the above (three) variable inputs were substitutes at varying
degrees. Input demand elasticities for labour, fuel, and crew
provisions with respect to net mesh size suggest that bigger
net mesh size would lead to lower labour and fuel use, and
lower crew provisions.
The results also showed that increase in fish prices will
increase labour, fuel and crew provisions use. The estimated
own price elasticity of output or fish catch implied the
evident overfishing in Guimaras Strait and adjacent waters.
This finding confirms the assessment of previous studies and
the suggestion of secondary data about the status of the
fishery
Are fishers profit maximizers? The case of Gillnetters in negros occidental and Iloilo, Philippines
Get PDFThe translog profit function model was used to determine whether sampled Philippine gillnet boats or fishers were able to maximize profits from their fishing trips. The empirical results showed that the translog functional form was more appropriate than the Cobb-Douglas form. The sampled gillnet boats were not able to maximize profits. The nonprofit-maximizing behavior was found in each of the different gillnet types: drift gillnet, encircling gillnet and bottomset gillnet. The evident overfished condition of the fishery and the fishers’ satisfaction from their work were cited as the major reasons why they opted to remain in the fishery despite its nonprofitability
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
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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