In this paper, an improved technique for evolving
wavelet coefficients refined for compression and reconstruction
of fingerprint images is presented. The FBI fingerprint
compression standard [1, 2] uses the cdf 9/7 wavelet filter
coefficients. Lifting scheme is an efficient way to represent
classical wavelets with fewer filter coefficients [3, 4]. Here
Genetic algorithm (GA) is used to evolve better lifting filter
coefficients for cdf 9/7 wavelet to compress and reconstruct
fingerprint images with better quality. Since the lifting filter
coefficients are few in numbers compared to the corresponding
classical wavelet filter coefficients, they are evolved at a faster
rate using GA. A better reconstructed image quality in terms
of Peak-Signal-to-Noise-Ratio (PSNR) is achieved with the best
lifting filter coefficients evolved for a compression ratio 16:1.
These evolved coefficients perform well for other compression
ratios also.
Description:
Communication Control and Computing Technologies (ICCCCT), 2010 IEEE International Conference on
Hatha, A A M; Suresh, T; Srinivasan, D; Lakshmanaperumalsamy, P(Microbes And Enviornments, June 19, 2000)
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Abstract:
The incidence of salmonella and escherichia coli in chicken retail outlets in a residential area of coimbatore, Tamilnadu India was studied with the view that accessories may be a source of cross contamination.Accessories like cages,knives ,chopping boards weighing balance trays and the hands of butcher were examined.A toatal of 14 salmonella as well as 31 E.coli were isolated from different sources. The incidence of E.coli was higher than that of Salmonella.The highest incidence of Salmonella was found in chopping boards and the maximum level of E.Coli was detected in cages.
Description:
Microbes and Enviornments,Vol.15,No.3,173-181,2000
Binu, Paul P; Dr.Rajasenan,D(Cochin University Of Science And Technology, July , 2013)
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Abstract:
The overall objective of the study is to examine whether the tribal communities in Kerala can be considered a coherent group in terms of select indicators of development by focusing on nine major tribal communities. The study also aims to bring out the intercommunity differences if any in aspects of livelihood options and education level of the tribal communities in Kerala
Description:
Department of Applied Economics
Cochin University of Science and Technology
Sulaiman,Pyroja; Binoy,Joseph; Paulose,C S(Department of Biotechnology, December 5, 2006)
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Abstract:
In the present study, serotonin 2C (5-HT2c) receptor binding parameters in the brainstem and cerebral cortex were investigated during
liver generation after partial hepatectomy (PH) and N-nitrosodiethylamine (NDEA) induced hepatic neoplasia in male Wistar rats. The
serotonin content increased significantly (p<0.01) in the cerebral cortex after PH and in NDEA induced hepatic neoplasia. Brain stem
serotonin content increased significantly (p<0.05) after PH and (p<0.001) in NDEA induced hepatic neoplasia. The number and affinity of
the 5-HT2c receptors in the crude synaptic membrane preparations of the brain stem showed a significant (p<0.001) increase after PH and in
NDEA induced hepatic neoplasia. The number and affinity of 5-HT2c receptors increased significantly (p<0.001) in NDEA induced hepatic
neoplasia in the crude synaptic membrane preparations of the cerebral cortex. There was a significant (p<0.01) increase in plasma
norepinephrine in PH and (p<0.001) in NDEA induced hepatic neoplasia, indicating sympathetic stimulation. Thus, our results suggest that
during active hepatocyte proliferation 5-HT2c receptor in the brain stem and cerebral cortex are up-regulated which in turn induce hepatocyte
proliferation mediated through sympathetic stimulation.
Renuka, T R; Remya, Robinson; Paulose,C S(Department of Biotechnology, November 2, 2005)
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Abstract:
Parasympathetic system plays an important
role in insulin secretion from the pancreas. Cholinergic
effect on pancreatic beta cells exerts primarily through
muscarinic receptors. In the present study we investigated
the specific role of muscarinic M1 and M3 receptors in
glucose induced insulin secretion from rat pancreatic islets
in vitro. The involvement of muscarinic receptors was
studied using the antagonist atropine. The role of muscarinic
MI and M3 receptor subtypes was studied using
subtype specific antagonists. Acetylcholine agonist, carbachol,
stimulated glucose induced insulin secretion at low
concentrations (10-8-10-5 M) with a maximum stimulation
at 10-7 M concentration. Carbachol-stimulated insulin
secretion was inhibited by atropine confirming the role of
muscarinic receptors in cholinergic induced insulin secretion.
Both M1 and M3 receptor antagonists blocked insulin
secretion induced by carbachol. The results show that M3
receptors are functionally more prominent at 20 mM glucose
concentration when compared to MI receptors. Our
studies suggest that muscarinic M1 and M3 receptors
function differentially regulate glucose induced insulin
secretion, which has clinical significance in glucose
homeostasis.
Hatha, A A M; Abhirosh, Chandran; Sherin, Varghese(I W A Publishing, 2008)
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Abstract:
Prevalence of faecal indicator bacteria, Escherichia coli and pathogenic bacteria, Vibrio cholerae,
Vibrio parahaemolyticus and Salmonella were analysed in Vembanadu lake (98350N 768250E), along
south west coast of India for a period of one year from ten stations on the southern and northern
sides of a salt water regulator constructed in Vembanadu Lake in order to prevent incursion of
seawater during certain periods of the year. While the northern side of the lake has a connection
to the sea, the southern side is enclosed when the salt water regulator is closed. The results
revealed the water body is polluted with high faecal coliform bacteria with mean MPN value
ranging from 1718-7706/100 ml. E. coli, V. cholerae, V. parahaemolyticus and Salmonella
serotypes such as S. paratyphi A, B, C and S. newport were isolated and this is the first report on
the isolation of these Salmonella serovars from this lake. E. coli showed highest percentage of
incidence (85.6–86.7%) followed by Salmonella (42–57%), V. choleare (40–45%) and V.
parahaemolyticus (31.5–32%). The increased prevalence of indicator and pathogenic bacteria in
the enclosed southern part of Vembanadu Lake may be resulting from the altered flow patterns
due to the salt water regulator.
Geetha, P; Dr.Ravindranatha Menon,N(Cochin University of Science & Technology, 1994)
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Abstract:
This thesis embodies findings on a taxonomical investigation of a group of lower marine invertebrates belonging to the category coelomata. Bryozoans are well known both in fossil and recent taxonomical history. They comprise of about 5,000 living and 16000 fossil species. Bryozoans are well known for their taxonomic abundance and structural diversity,representing the various ecological niches ranging from the intertidal to the abyssal benthic. At a time when global marine biological diversity has become a concern of not only to the scientists but also to the policy makers,an understanding of species diversity and abundance are cardinal aspects of biological studies. Geological time scales which is known that by Pre-Cambrian, marine invertebrate diversity reach the maximum and this diversity has become more comprehensive as time advanced. Taxonomists a vanishing species of scientists have become more concerned in discerning patterns of species diversity. The basic tool for this is identification fo animals. with this idea in mind a detailed study of taxonomy of bryozoan was undertaken . The major part of this thesis is devoted to describe various species of bryozoans with detailed description and ecotypical variations.The pattern of distribution and abundance which are important aspects of animal groups have also been documented. Possible effects of heavy metal contamination on the tolerance and growth of bryozoans, a few species of which have been eliminated from the chronically polluted areas of Cochin backwaters have also been documented.
Description:
Division of Marine Biology, Microbiology and Biochemistry, School of Marine Sciences, cochin University of Science and Technology
Sony, Vijayan; Dr.Varkey, A M(Cochin University of Science And Technology, August , 2014)
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Abstract:
Maritime ports are inevitable for India’s economic development. The very existence and sustainable development of ports depend on clean port environment. There is a notion that shipping is an over regulated industry. But in India, it is being operated under sub- standard conditions, raising crucial issues of environmental pollution in the country’s ports. The negative impacts of vessel sourced pollution on the eco-fragile coastal peninsula can be detrimental to the living conditions, health and interests of the coastal population. It can disturb marine life and imbalance the aquatic ecosystem. The present study analyses control of vessel sourced pollution in Indian ports from an economic and ecological perspective. The study investigates legal reasons behind the weak control, regulation and monitoring over vessel sourced pollution in Indian ports. The loopholes in the legal system are identified and suggestion made to implement stronger enforcement. Unless, vessel operations are properly regulated in ports, the trade and economic prospects of India will be jeopardized.
Description:
School of Legal Studies, Cochin University of Science and Technology
Arunachalam, P; Dr.Rajasenan,D(Cochin University Of Science And Technology, November 10, 1995)
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Abstract:
The unprecedented increase in competition as well
as protectionism in world markets makes it imperative for a
country like India to get much more energetically involved
in the export business and make the dictum "export and
flourish" a really true proposition, as against a somewhat
passive "export and perish" approach followed during the
last three and a half decades. At present, India needs to
evolve new export strategies to cope with the changing
international scenario and to ensure a steady improvement
in the otherwise sagging export performance. A search for
such strategic measures becomes all the more important in
view of the all-out efforts of the government for expanding
the country's exports to tide over the crippling balance of
payment deficits and to generate necessary foreign exchange
to meet the import requirements for accelerating the tempo
of economic development.
The present study is an endeavour in this
direction. Taking engineering exports as an example, the
study demonstrates alternative ways of understanding
indepth export performance analysis and learning lessons
for better performance in future
Description:
Department of
Applied Economics, Cochin University of Science and
Technology
Padma, Nambisan; Nampoori, V P N; Vallabhan, C P G; Unni krishna PilIai, P R(1997)
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Abstract:
A comparat ive study of the effect oflaser in inducing chro mosomal
aberrat ions at 4gg nm was done in View j aba L. (faba bean)
and Allium ccpa L. (onion) with Argon ion laser (Spectra Physics Model
171). Seeds and bulbs of V.jaba and A. eepa were subjected to laser irra diation
by 4gg nm excitations from Argon ion laser source at power levels
200 and 400 mW with power densities 2.25 mW em" and 4.49 mW
em" and ditTerent exposure times (10, 20, 30 & 40 minutes). Similar to
the effect of oth er physical and chemical mutagens, laser caused a dose
dependent decrease in mitotic index and a rise in mitotic aberrations
when compared to the control. In both plant species, mutations were
observed in all stages of mitotic cell cycle. The total percentage of aberrations
was two fold higher at 400 mW than at 200 mW exposure.
Description:
GENETICS and BREEDING
Volume 28 Number3-4 pp. 27-33, 1996/1997
Unnikrishna Pillai, P R; Padma, Nambisan; Nampoori, V P N; Vallabhan, C P G(HEREDITAS ( Beijing ), 1997)
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Abstract:
Laser irradiation at wavelength 514 nm was used to study the effect, of lasers in inducing
chromosomal aberrations at mitosis. This study offers a new radiation system which could be used for the
induction of mutations. Results are compared with those obtained from studies using y-rays as irradiation
source.
Jalaja,N R; Sukumaran Nair,M K(Department of Applied Economics, 2004)
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Abstract:
It examine the aspects of Madhya Pradesh’s industrial structure which throw light on the development, viability and the efficiency of not only the over all industrial sector but also some of the selected industries of the state. The major objectives of are to examine the nature and characteristics of economic backwardness in Madhya Pradesh in an inter-state comparative framework and to analyse the pace and pattern of industrial growth in Madhya Pradesh against the backdrop of liberalization. To explore the industrial structure of Madhya Pradesh using the major structural ratios and industry mix. This study has underlined some structural as well as region specific constraints to the accelerated growth of the manufacturing industry in Madhya Pradesh. The industrial structure of Madhya Pradesh is concentrated and lop-sided. This is evidenced by the dominancy of single industry, basic metal and alloys. A diversified industrial structure is essential for promoting interdependent growth of the manufacturing industry based on the inter-industry linkages and agglomeration. The thesis gives a broad spectrum of regional disparities in development and evidence for Madhya Pradesh’s backwardness also portrayed and reflects the changing industrial structure of the state.
Vincent,Panikulangara; Dr.Sankaranarayanan, K C(Cochin University Of Science And Technology, November 11, 1982)
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Abstract:
This study proposes to verify the hypothesis relating to labour legislation in the industrial sector.Here there are as many as fifty enacments of the central government alone.These legislations indicating the growth of this branch of law over a period of more than half a centuary cover a wide spectrum of interests of workers both individuals and collective in different areas of employment.However this study relates mainly to a)trade unions act,b)industrial employment c)industrial disputes.
Description:
Department Of Applied Economics
Cochin University Of
Science And Technology