1,721,515 research outputs found
പുറംകടലിലേയും ആഴക്കടലിലേയും മത്സ്യങ്ങള് (Deepsea and oceanic resources)
Full text linkAlthough the marine living resources are renewable, their
unbridled exploitation causes irreparable loss to the habitat
and the sustainable production of biota. Ever increasing
population and demand for cheap fish protein together with
the availability of a 8041 km long coast and more than 1,80,000
km2 shallow coastal area have attracted not only the
traditional communities but also small-scale entrepreneurs into
fishing. The last fifty years' growth of Indian marine fisheries
is commendable, which has transformed a subsistence-oriented
traditional fmheries into a market oriented commercial
fisheries with the support of technical advancements in harvest
and post harvest areas and also gained considerable strength
and capabilities in landing, storage and processing infrastructure.
The growing demand for prime value species of marine
resources in domestic and export market has encouraged the
commercial exploitation and production of target specie
The deep scattering layer (DSL) of Indian EEZ
Full text linkThe deep scattering layer is a trophic network that carry
numerous food chains, some of which end up in species of high
economic value, such as oceanic squids, tunas, other scombroids,
pelagic sharks etc. These diurnally and vertically moving
bioacoustic layers are assemblages of mostly negatively phototropic
zooplankton and micronekton. The paper examines their
characteristics, sampling methods, ecosystem, bio composition and
future lines of research and management priorities and reviews all
works done in India on the DSL. The major database for this study
is drawn from the results of the initial surveys and samplings of
FORV Sagar Sampada in the Indian EEZ since 1985
Impact of bottom trawling on exploited resources
Full text linkToday's Indian marine fisheries face challenging problems in trying
to achieve the kind of snstainability that will assure its axon longrange
survival
Conservation of marine mammals
Full text linkWhere economic considerations of the common man mask and override
his enviromental thinking and rationale as at present, any
attempt at protection of these vidnerable resources is possible only
through a cooperative spirit and voluntary involvement at protection
and conservation, rather than by enforcing legislation
Marine Biodiversity: Conservation and management-Introduction
Full text linkThere has been a realisation in the latter part of twentieth century
on the imperative need to protect and conserve the habitats and their
resources. In the Biodiversity convention at the UN Conference on
Environment and Development (UNCED) the term biodiversity is
defined as "the variability among living organisms from all sources
including inter alia, terrestial, marine and other ecosystems and the
ecological complexes of which they are part, this includes diversity
within species, between species and of ecosystems.
The destruction of young fish and its impact on inshore fisheries
Full text linkThe annual average loss of catfish due to eggs and larvae destruction
is estimated at an alarming 5250t valued at Rs. 4.12 crore
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
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