Devadasan,K; Dr.Gopakumar, K(Cochin University of Science and Technology, December , 1982)
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Abstract:
This thesis is an attempt to make a comparative study of the composition of the muscle proteins of some commercially important species of fishes and shell fishes of our coast and their changes during preservation and processing. As a part of this the distribution of the major protein nitrogen fractions in several species of fishes and shell fishes was studied in detail.
Anwarul Islam, MD; Dr.Ranganathan, N(Cochin University Of Science And Technology, November 5, 1988)
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Abstract:
For improving agricultural marketing, which has
been discussed in the previous chapter, the Government has
intervened in different ways. The direct regulatory role
through the regulation of markets and market practices is one
of the ways in which governmental intervention can improve
agricultural marketing. This study is an enquiry of the direct
regulatory role of the government through regulation of markets
and market practices. By restructuring the operational methods
and redesigning the existing physical markets, this system
gives direct benefit to the cultivating class and protects
them from the market manipulations of organised and powerful
private traders. If traders do not continue their trade for
the time being they will not be affected financially, because
they are resourceful or financially solvent. On the other
hand, Cultivators must sell their produce immediately after
harvesting for the lack of additional facilities or to satisfy
other needs for which finance is required. Another important
reason is that Cultivators/farmers are not organised and because of lack of their organisation, they sell their produces
individually. In this situation, a farmer is helpless when
astute traders indulge in manipulations at the time of purchase of the produces. So it is the government's obligation to protect the interest of the farmers. Protection of the farmer/cultivator is necessary not only from the point of social justice but also from that of economic growth. If the farmers are assured of a remunerative or incentive price for their produce, they will get the inspiration to produce more and through more production, economy will be developed and
the nation as a whole will be benefitted.
This study will examine the management system of the
markets through the direct regulatory role played by the
governments to control markets and market practices in West
Bengal and Bangladesh.
Description:
School Of Management Studies,
Cochin University Of Science And Technology
Poulose Jacob,K; Sonia, Sunny; David, Peter S(Cochin University of Science and Technology, 2013)
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Abstract:
Speech is a natural mode of communication for people and speech recognition is an intensive area of research due to its versatile applications. This paper presents a comparative study of various feature extraction methods based on wavelets for recognizing isolated spoken words. Isolated words from Malayalam, one of the four major Dravidian languages of southern India are chosen for recognition. This work includes two speech recognition methods. First one is a hybrid approach with Discrete Wavelet Transforms and Artificial Neural Networks and the second method uses a combination of Wavelet Packet Decomposition and Artificial Neural Networks. Features are extracted by using Discrete Wavelet Transforms (DWT) and Wavelet Packet Decomposition (WPD). Training, testing and pattern recognition are performed using Artificial Neural Networks (ANN). The proposed method is implemented for 50 speakers uttering 20 isolated words each. The experimental results obtained show the efficiency of these techniques in recognizing speech
Sreekumar, K; Thomas, Mathew; Mirajkar, S P; Sugunan, S; Rao, B S(Elsevier, 2000)
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Abstract:
The catalyst compositions of the Zn1−xCOxFe2O4 (x= 0, 0.2, 0.5, 0.8 and 1.0) spiel series possessing ‘x’ values, x less than or equal to 0.5, are
unique for selective N-monomethylation of aniline using methanol as the alkylating agent. Since dimethyl carbonate (DMC)
is another potential non-toxic alkylating agent, alkylation of aniline was investigated over various Zn–Co ferrites using DMC
as the alkylating agent. The merits and demerits of the two alkylating agents are compared. Catalytic activity followed a
similar trend with respect to the composition of the ferrospinel systems. DMC is active at comparatively low temperature,
where methanol shows only mild activity. However, on the selectivity basis, DMC as an alkylating agent could not compete
with methanol, since the former gave appreciable amounts of N,N-dimethylaniline (NNDMA) even at low temperature where
methanol gave nearly 99% N-methylaniline (NMA) selectivity. As in the case of methanol, DMC also did not give any
C-alkylated products.
Jyothi, T M; Sugunan, S; Rao, B S(Catalysis Letters, 2000)
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Abstract:
A comparative study on the anisole methylation with methanol over lanthanum-promoted Sn02 catalyst and its sulfate-doped analogue
is presented. A maximum 2.6-xylenol selectivity of 82% was achieved at 400 degreeC under optimized conditions at an anisole
conversion of 65% over lanthanum-promoted Sn02 catalyst. The sulfate modification resulted in the dealkylation of anisole to phenol
followed by several unselective side reactions due to the creation of strong acid sites. The activity of lanthanum-modified tin oxide
catalysts in the selective formation of 2.6-xylenol is ascribed to the presence of weak Lewis acid sites and comparatively stronger basic
sites.
Garcia,Garcia J; Bonache,J; Gil,I; Martin,F; Marques,R; Falcon,F; Lapetegi,T; Laso,M A G; Sorolla,M(Microwave and Optical Technology Letters, February 20, 2005)
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Abstract:
In this paper, microstrip lines magnetically coupled to splitring
resonators (SRRs) are conquved to electromagnetic bundgup (EBG)
nr,rrostrip lines in terns q/ their stop-heard penjbrnmrnce and dimensions. In
bath types o/ trunsmis•siou lines, signal propagation is inhibited in it certain
jequency bwuL For EBG microstrip lines, the central frequency of such a
forbidden band is determined by the period of the structure, whereas in
SRR-hased microstrip lines the position of the frequency gap depends on
the quasi-static resonant frequency of the rings. The main relevant conrributiun
of this paper is to provide a tuning procedure to control the gap width
in SRR microstrip lines, and to show that by using SRRs, device dimensions
ale much smaller than those required by EBGs in order to obtain similar
stop-banal performance. This has been demonstrated by fill-wave electromagnetic
simulations and experimentally verified from the characterization
ql two fabricated microstrip lines: one with rectangular SRRs etched on the
upper substrate side, and the other with a periodic perturbation cf'strip
width. For similar rejection and 1-(;H,. gap width centered at 4.5 Gllz, it
has been found that the SRR microstrip line is•,fve times shorter. In addition,
no ripple is appreciable in the allowed band for the .SRR-hared structure,
whereas due to dispersion, certain mismatch is expected in the EBG
prototype. Due to the high-frequency selectivity, controllable gap width, and
small dimensions, it is believed that SRR coupled to planar transmission
lines can have an actual impact on the design of stop-band filters compatible
with planar technology, and can be an alternative to present solutions based on distributed approaches or EBG
Rani, Joseph; Lakshmi,K; Honey, John; George,K E; Mathew, K T(Wiley InterScience, June 21, 2007)
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Abstract:
Microwave properties of conductive polymers is crucial
because of their wide areas of applications such as coating in reflector
antennas, coating in electronic equipments, firequenry selective .surfaces,
EMI materials, satellite communication links, microchip antennas, and
medical applications. This work involves a comparative study of dielectric
properties of selected conducting polymers such as polyaniline.
poly(3,4-eth),lenedio.syt2iophene), polvthiophene, polvpvrrole. and
pohparaphenylene diazomethine (PPDA) in microwave and DC,fields.
The inicrowave properties such as dielectric constant, dielectric loss.
absorption coefficient, heating coefficient, skin depth, and conductivity in
the microwave frequency (S hand), and DC fields were compared. PEDOT
and polccuiiline were found to exhibit excellent properties in DC
field and microwave frequencies, which make thein potential materials
in many of the alorenientioned applications
Sumam, Mary Idicula; Savitha, Sam Abraham(IEEE, 2012)
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Abstract:
This paper compares statistical technique of
paraphrase identification to semantic technique of
paraphrase identification. The statistical techniques
used for comparison are word set and word-order
based methods where as the semantic technique used is
the WordNet similarity matrix method described by
Stevenson and Fernando in [3].
Description:
2012 International Conference on Data Science & Engineering (ICDSE)
Shavit,R; Taig,I(Microwave and Optical Technology Letters, July 20, 2004)
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Abstract:
In this paper, a comparison study among three neuralnetwork
algorithms for the synthesis of array patterns is presented. The
neural networks are used to estimate the array elements' excitations for
an arbitrary pattern. The architecture of the neural networks is discussed
and simulation results are presented. Two new neural networks,
based on radial basis functions (RBFs) and wavelet neural networks
(WNNs), are introduced. The proposed networks offer a more efficient
synthesis procedure, as compared to other available techniques
Sreenivasan, P V; Dr. Philip, Kurian(Cochin University of Science & Technology, October , 2007)
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Abstract:
The present study aims at the preparation of an ABS
(acrylonitrile-butadiene-styrene) type toughened thermoplastic by melt blending polystyrene (PS) and powdered nitrile rubber (NBR). The product is an interesting
class of toughened thermoplastic, which would combine the superior mechanical
and processing characteristics of PS and the excellent oil-resistant properties of
NBR. In this thesis an attempt has been made to investigate systematically the
effect of compatibilisation and dynamic vulcanisation on the morphology and
properties of powdered nitrile rubber toughened polystyrene.
Description:
Department of Polymer Science and Rubber Technology, Cochin University of
Science and Technology
The principal objective of this study was to explore the compatibility of a blend of
two synthetic elastomers viz., ethylene-propylene-diene rubber (EPDM) and
chlorobutyl rubber (CIIR). Various commercial grades of EPDM were blended
with a specific grade of CIIR at different proportions. The mechanical properties such
as tensile strength, tear strength, ageing resistance, etc. were studied. On the basis of
the observed physical properties, two particular grades of EPDM were found to be compatible
with CIIR. Differential scanning calorimetry and scanning electron microscopy
confirmed the results. Chlorosulphonated polyethylene was added as a compatibilizing
agent to overcome the phase separation of the other two incompatible grades of EPDM
in blending with CIIR. The results revealed that the addition of compatibilizer greatly
improves the compatibility and thereby the properties of the blends.
Valsamma, Paul; Dr.Chandrasekharan, N S(Cochin University of Science and Technology, December , 1995)
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Abstract:
This thesis Entitled compensation to workmen for industrial injuries.Evaluation of the different forms of liability for compensating industrial injuries makes it evident that the liability under the social insurance scheme is the most befitting one, as it eliminates the problem of evasion of liability by the employer by providing for sharing of liability. Liability for compensation under the workmen's Compensation Act, 1923 and the Employees' State Insurance Act, 1948 arises only in the case of accidents, arising in the course of and out of employment. Majority of the workers, covered by the workmen's Compensation Act, have supported lumpsum payment of compensation under the Act. It appears that workers are ignorant of the cemerits of lumpsum payment. So, the workers should be properly educated by the Inspectorate, proposed above, about the comparative advantages of periodical payments. It is suggested that the workmens Compensation Act, 1923 may be amended, imposing fee upon the parties for each adjournment. It is also suggested that provision may be made in the workmens Compensation Act, 1923 for the expeditious despatch of amendments of the Workmen's Compensation Act, 1923, the Workmens· Compensation Rules, 1924 and the Schedules, made from time to time, to the comrnissioners for workmens Compensation, This will help them mete out justice to an injured workman, as required by the changes in the law. The Employees' State Insurance Act, 1948 and the Rules may be amended, requiring the employers to provide the employees with necessary information, in the vernacular language, about the employment injury benefits available under the Employees' State Insurance Act, 1948 and the formalities for obtaining the same. This will help the illiterate employees, especially the casual ones, avail of employment injury benefits. Changes in the law, on the lines suggested above, are imperative to make the system of compensation for industrial injuries prove effective and beneficial to injured workmen.
Description:
Department of Law,
Cochin University of Science and Technology
Bank switching in embedded processors having partitioned memory architecture results in code size as well as run time overhead. An algorithm and its application to assist the compiler in eliminating the redundant bank switching codes introduced and deciding the optimum data allocation to banked memory is presented in this work. A relation matrix formed for the memory bank state transition corresponding to each bank selection instruction is used for the detection of redundant codes. Data allocation to memory is done by considering all possible permutation of memory banks and combination of data. The compiler output corresponding to each data mapping scheme is subjected to a static machine code analysis which identifies the one with minimum number of bank switching codes. Even though the method is compiler independent, the algorithm utilizes certain architectural features of the target processor. A prototype based on PIC 16F87X microcontrollers is described. This method scales well into larger number of memory blocks and other architectures so that high performance compilers can integrate this technique for efficient code generation. The technique is illustrated with an example
Description:
International Journal of Software Engineering and Its Applications
Vol. 6, No. 1, January, 2012
Girish Kumar,K; Saji John,Konnully(Department of Applied Chemistry, April 15, 2006)
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Abstract:
This paper reports the synthesis of a series of six new polystyrene anchored metal complexes of Co(II), Fe(III), Ni(II),
Cu(II), Zn(II), and dioxouanium(VI) using the polystyrene anchored Schiff base of 2-nitrobenzaldehyde and the corresponding
metal salts. The metal salts used were anhydrous FeCl3, CoCl2 Æ 6H2O, Ni(CH3COO)2 Æ 4H2O, Cu(CH3-
COO)2 Æ H2O, Zn(CH3COO)2 Æ 2H2O, and UO2(CH3COO) Æ 2H2O. Physico chemical characterizations have been made
from diffuse reflectance and vibrational spectra, elemental analysis, magnetic measurements, and TG studies. The elemental
analysis suggest a 1:2 metal:ligand ratio when the complexation has carried out at 70 C for about 12 h reflux. The
ligand is monodentate and coordinates through the azomethine nitrogen. The Fe(III), Co(II), Ni(II), and Cu(II) complexes
are all paramagnetic whereas Zn(II) and U(VI) are diamagnetic. Zn(II) is assigned a tetrahedral structure, Cu(II) and
Co(II) are assigned a square planar structure and Fe(III), Ni(II), and U(VI) are all assigned an octahedral structure.
The polystyrene anchored ligand has been developed as an excellent reagent for the removal of Cu(II). Optimum conditions
have been developed for the removal of metal ion from solutions by studying the effect of change of concentration of
metal ion, ligand, effect of pH, time of reflux, and interference effect of other ions. It was found that within a span of 20 min
it is possible to remove 90% of the metal ion from a 30 ppm metal ion solution in the pH range 4–5.5.