Wilson, P R; Dr.Nair, K N(Cochin University of Science And Technology, October , 1981)
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Abstract:
Today India is seeking a speedy transformation of her semi-stagnant economy to a dynamic one by means of economic planning in a democratic set up. In the context of this growth oriented endeavour public sector has a vital role to play. After three decades of planned development,
it has become important that India must make fresh appraisals on the role of public sector in the economic renaissance of the country. Almost no comprehensive study has been made on
this vital segment of the economy vis-a-vis the growth economics. This study is an attempt to fill this need in a very modest way. It presents the subject in a new perspective. An earnest attempt is made to reveal the critical problems inhibiting the growth of the public sector from a new angle which focusses the spot-light on the economics of development.
Description:
School of management studies, Cochin University of Science And Technology
Resmi, P; Dr. N. Chandramohanakumar(Cochin University of Science and Technology, April 17, 2015)
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Abstract:
Mangrove forests are the most productive and bio-diverse wetlands on
earth. It generate a large amount of litter in the form of leaves, branches, twigs,
inflorescence and other debris and provides habitat for diverse flora and fauna of
marine and terrestrial origin such as bacteria, fungi, algae, lichens, zooplankton,
benthos, birds, reptiles and mammals. These systems act as nursery for many
fishes and shellfishes. The other sources may also provide important organic
carbon inputs; including allochthonous riverine or marine material, autochthonous
production by benthic or epiphytic micro- or macroalgae, and local water
column production by phytoplankton. Since mangrove sediments are very
complex which receives autochthonous and allochthonous organic matter inputs,
the information extracted from the analysis of mangrove sediments is the
fingerprint of both natural and human-induced changes.
Sunil Kumar, P G; Dr.Nandakumar, C G(Cochin University of Science and Technology, June , 2008)
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Abstract:
Warships are generally sleek, slender with V shaped sections and block
coefficient below 0.5, compared to fuller forms and higher values for commercial
ships. They normally operate in the higher Froude number regime, and the
hydrodynamic design is primarily aimed at achieving higher speeds with the
minimum power. Therefore the structural design and analysis methods are
different from those for commercial ships. Certain design guidelines have been
given in documents like Naval Engineering Standards and one of the new
developments in this regard is the introduction of classification society rules for
the design of warships.The marine environment imposes subjective and objective uncertainties
on ship structure. The uncertainties in loads, material properties etc.,. make
reliable predictions of ship structural response a difficult task. Strength, stiffness
and durability criteria for warship structures can be established by investigations
on elastic analysis, ultimate strength analysis and reliability analysis. For analysis
of complicated warship structures, special means and valid approximations are
required.Preliminary structural design of a frigate size ship has been carried out . A
finite element model of the hold model, representative of the complexities in the
geometric configuration has been created using the finite element software NISA.
Two other models representing the geometry to a limited extent also have been
created —- one with two transverse frames and the attached plating alongwith the
longitudinal members and the other representing the plating and longitudinal
stiffeners between two transverse frames. Linear static analysis of the three models have been carried out and each one with three different boundary
conditions. The structural responses have been checked for deflections and
stresses against the permissible values. The structure has been found adequate
in all the cases. The stresses and deflections predicted by the frame model are
comparable with those of the hold model. But no such comparison has been
realized for the interstiffener plating model with the other two models.Progressive collapse analyses of the models have been conducted for the
three boundary conditions, considering geometric nonlinearity and then
combined geometric and material nonlinearity for the hold and the frame models.
von Mises — lllyushin yield criteria with elastic-perfectly plastic stress-strain curve
has been chosen. ln each case, P-Delta curves have been generated and the
ultimate load causing failure (ultimate load factor) has been identified as a
multiple of the design load specified by NES.Reliability analysis of the hull module under combined geometric and
material nonlinearities have been conducted. The Young's Modulus and the shell
thickness have been chosen as the variables. Randomly generated values have
been used in the analysis. First Order Second Moment has been used to predict
the reliability index and thereafter, the probability of failure. The values have
been compared against standard values published in literature.
Description:
Department of Ship Technology,
Cochin University of Science and Technology
Joyni,Jacob M; Dr.Madhusoodana,Kurup B(Cochin University of Science and Technology, January , 2012)
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Abstract:
A general introduction to the problems faced in the shrimp culture due to waste formation and its consequent environmental hazards and production problems of Giant tiger shrimp, Penaeus monodon is highlighted by the author in this thesis. The objective of the present work was to assess the potential of brackish water finfish to improve bottom soil conditions and
thereby increase the growth and production of Penaeus monodon. The salient findings of the present study are summarized in chapter 7. This is followed by the references cited in the thesis and list ofpublications originated from the present study.
Description:
School of Industrial Fisheries, Cochin University of Science and Technology
Akhilesh, K V; Pillai, N G K(Cochin University of Science and Technology, July , 2014)
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Abstract:
Elasmobranchs comprising sharks, skates and rays have traditionally formed an important fishery along the Indian coast. Since 2000, Indian shark fishermen are shifting their fishing operations to deeper/oceanic waters by conducting multi-day fishing trips, which has resulted in considerable changes in the species composition of the landings vis- a-vis those reported during the 1980’s and 1990’s. A case study at Cochin Fisheries Harbour (CFH), southwest coast of India during 2008-09 indicated that besides the existing gillnet–cum- hooks & line and longline fishery for sharks, a targeted fishery at depths >300-1000 m for gulper sharks (Centrophorus spp.) has emerged. In 2008, the chondrichthyan landings (excluding batoids) were mainly constituted by offshore and deep-sea species such as Alopias superciliosus (24.2%), Carcharhinus limbatus (21.1%), Echinorhinus brucus (8.2%), Galeocerdo cuvier (5.4%), Centrophorus spp. (7.3%) and Neoharriotta pinnata (4.2%) while the contribution by the coastal species such as Sphyrna lewini (14.8%), Carcharhinus sorrah (1.4%) and other Carcharhinus spp. has reduced. Several deep-sea sharks previously not recorded in the landings at Cochin were also observed during 2008-09. It includes Hexanchus griseus, Deania profundorum, Zameus squamulosus and Pygmy false catshark (undescribed) which have been reported for the first time from Indian waters. Life history characteristics of the major fished species are discussed in relation to the fishery and its possible impacts on the resource
Manojkumar, T G; Dr.Madhusoodana,Kurup B(Cochin University of Science and Technology, March 22, 2006)
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Abstract:
This thesis entitled Fish habitats and species assemblage in the selected rivers of kerala and investigation on life history traits of puntius carnaticus (JERDON,1849). Ecology is a new and exceedingly complex field of study, even though its concept was recognized by the Apostles in their use of the phrase ‘all flesh is grass.central role to play both in order to understand better the biodiversity phenomenon and to be able to draw up clear guidelines for careful resource management. In a review by WWF, IUCN and UNEP on the ways of conserving genetic diversity of freshwater fish it was recommended that the best way to conserve species diversity is to conserve habitat.The habitat studies in freshwater ecosystems are very essential for the proper understanding and management of human impact on fish diversity, to study the relationship between habitat variables and fish species assemblage structure, quantification of ecosystem degradation, habitat quality and biotic integrity of the ecosystems, development of habitat suitability index (I-ISI) models and classification of river reaches based on their physico-chemical properties. Therefore in the present study an attempt was made to assess the biodiversity potential and the relationship between habitat variables and fish species assemblage structure in six major river systems of Kerala which would be very useful in impressing upon the seriousness of habitat degradIn the present study, in Kabbini river system 15 locations encompassing between 721 946m above MSL were surveyed.ation and biotic devastation undergone in the major river systems of Kerala.During the present study the Habitat Quality Score (HQ) developed by the Ohio EPA was applied for the first time in India.The result of the present study revealed that, among various variables analysed, altitude has a very significant influence in deciding the fish diversity in six major river systems of Kerala. The fish diversity studied on the basis of Shanon-Weiner and Simpson diversity indices revealed that even though some minor variations occur with the suitability and complexity of habitats, the altitude showed inverse relationship with fish diversity.The present study revealed that the National Policy on the interlinking of rivers would permanently alter the HSI indices of the above mentioned fish species, which are now solely protected by the individuality of the rivers where their limited occurrence was notice.
Description:
School of Industrial
Fisheries,Cochin University of Science and Technology
Rajasenan, D; Dr.Sankaranarayanan, K C(Cochin University Of Science And Technology, March 2, 1987)
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importance of fishing and other allied industries
in the economy was realised only very recently. Consequently
only very few studies are available on the subject. Here an
attempt is made to survey the available literature on the
subject.
Description:
Department Of Applied Economics
Cochin University Of
Science And Technoogy
Nirmala, Antherjanam N; Dr.Jathavedan, M(Cochin University of Science And Technology, December , 1987)
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Abstract:
In this thesis the author has presented qualitative studies of certain Kdv equations with variable coefficients. The well-known KdV equation is a model for waves propagating on the surface of shallow water of constant depth. This model is considered as fitting into waves reaching the shore. Renewed attempts have led to the derivation of KdV type equations in which the coefficients are not constants. Johnson's equation is one such equation. The researcher has used this model to study the interaction of waves. It has been found that three-wave interaction is possible, there is transfer of energy between the waves and the energy is not conserved during interaction.
Description:
Department of mathematics, Cochin University of Science And Technology
Hari Sankar, B; Dr Ramaiah(Cochin University of Science and Technology, January 8, 2015)
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Abstract:
Development of molecular probes for the selective and sensitive detection of
analytes has been an active area of research because such effective molecules can have
biological and medicinal applications. Of the various probes reported, the fluorescence
based systems have attracted much attention owing to their high sensitivity, fast
response time, non–invasiveness and technical simplicity. However, the quantification of
a target analyte using the fluorescent probe that acts through a single emission response
(either increase or decrease in the fluorescence intensity) can have disadvantages, when
compared to the systems that show either dual emission or ratiometric changes. In the
case of the systems that exhibit ratiometric changes, the ratio of the fluorescence
intensity of the two different wavelengths can be utilized for the quantification of the
analyte of interest. Such an observation will have an effective internal referencing that
greatly increases the sensitivity of the detection. In this context, it was our objective to
develop functional organic systems and to explore their potential as sensitive
fluorescent probes for the recognition of anions, cations and biomolecules. The present
thesis has been divided into four chapters and of which the first chapter gives an
overview on the organic fluorescent probes, with a particular emphasis on their
mechanism of molecular recognition. In addition, the specific objectives of the present
thesis were also briefly described at the end of this chapter.
Nisha,N R; Singh,A D(Department of Marine Geology and Geophysics,Faculty of Marine Sciences, 2002)
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In the present investigation, an attempt is made to study late Quaternary foraminiferal and pteropod records of the shelf of northern Kerala and to evaluate their potentiality in paleocenographic and paleoclimatic reconstruction. The study gives details of sediment cores, general characteristics of foraminifera and pteropod species recorded from the examined samples and their systematic classification, spatial distribution of Recent foraminifera and pteropods and their response to varying bathymetry, nature of substrate, organic matter content in sediment and hydrography across the shelf. An attempt is also made to establish an integrated chronostratigraphy for the examined core sections. An effort is also made to identify microfaunal criteria useful in biostratigraphic division in shallow marine core sections. An attempt is made to infer various factors responsible for the change in microfaunal assemblage. Reconstruction of sea level changes during the last 36,000 years was attempted based on the pteropod record. The study reveals a bathymetric control on benthic/planktic (BF/PF) foraminiferal and pteropods/planktic foraminiferal (Pt/PF) abundance ratio. Bathymetric distribution pattern of BF/PF ratio is opposite to the (Pt/PF) ratio with decreasing trend of former from the shore across the shelf. Quantitative benthic foraminiferal record in the surficial sediments reveals a positive correlation between the diversity and bathymetry. R-mode cluster analysis performed on 30n significant Recent benthic foraminiferal, determines three major assemblage.
Prasanna, A; Dr. Chandrasekhara, N S(Cochin University of Science and Technology, March 16, 1993)
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Abstract:
Forest is essential for the healthy subsistence of human being on earth. Law has been framed to regulate exploitation of forest.This study is an analysis of the law relating to forest from an environmental perspective.Practical suggestions are also made for the better protection of forest .Forest is a valuable component of human environment.For healthy subsistence of human beings on earth it is essential that at least one third of the land area on earth should be under forest cover. Forest helps in keeping air and water fresh and climate good.The Indian Forest Act 1927 and State legislation relating to forest impose Governmental control over forests by classifying them into reserved forests. Protected forests and village forests.Effective environmental impact studies facilitate adoption of the practice of sustainable development.Permission should not be granted for a project before examination
of its impact on the flora and fauna in forest.Kerala, much of the vested forest remains under the control of the State Government and are managed like reserved forests.Infrastructural facilities require improvement in almost all States for protecting forest.Inter-State problems can be minimised if a central forest legislation is applied uniformly throughout India.Voluntary organisations should be encouraged to taxe part actively in the programmes for conserving forest and wildlife.The new Forest Act should provide for effective environmental impact study before development projects are undertaken in forest areas. The guidelines for this should be clearly laid down in the Act.The law relating to forest should also clearly lay down the guidelines for implementing social forestry programmes. The Forest Department should be authorised to lease lands for planting useful trees. The new forest legislation should also recognise the traditional tribal rights in forest. The Indian Forest Act 1927 and the State legislation relating to forest with their outdated revenue policy and scheme should be replaced by such a new forest legislation framed with an environmental peres-pective. The new law should be uniformly applied throughout India .
Description:
Department of Law, Cochin University of Science and Technology
Boban, Thomas; Dr.Krishna Pillai, M G(Cochin University of Science and Technology, December , 1989)
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Abstract:
This thesis deals with preparing stoichiometric crystalline thin films of InSe and In2Se3 by elemental evapouration and their property investigation.In the present study three temperature( or Elemental evapouration) method is utilized for the deposition of crystalline thin films . The deposition mechanism using three temperature method deals’ with condensation of solids on heated surfaces when the critical supersaturation of the vapour phase exceeds a certain limit. The critical values of the incident flux are related to substrate temperature and the interfacial energies of the involved vapours. At a favorable presence of component atoms in the vapour phase these can react and condense onto a substrate even at a elevated temperature. In the studies conducted the most significant factor is the formation of single compositional film namely indium mono selenide in the In –se system of compounds .Further this work shows the feasibility of thin film photovoltaic junctions of the schottky barrier type
Description:
Department of Physics, Cochin University of Science and Technology
Mohanachandran, K; Dr.Sathianandan, K(Cochin University Of Science And Technology, April 2, 1983)
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Abstract:
Due to the great versatility of the properties
of polymer thin films, special interest has been taken in
recent years on their preparation and electrical properties.
The present thesis is entirely devoted to the study of the
formation, structure and electrical properties of plasma»
polymerised polyacrylonitrile (PAN) thin films. Eventhough
the studies are confined to a single polymer film, the
results in general are applicable to similar polar polymer
films.
Description:
Department of Physics,Cochin University Of Science And Technology