Choudhury, P K; Roger, Lessard S(Microwave and Optical Technology Letters, January 20, 2002)
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Abstract:
An attempt is made to determine the relative power
distribution in a step-index parabolic cylindrical waveguide (PCW) with
high deformation across the direction of propagation. The guide is
assumed to be made of silica. The scalar field approximation is employed
for the analysis under which a vanishing refractive-index (RI) difference
in the waveguide materials is considered. Further, no approximation for
folds- is used in the analytical treatment. Due to the geometry of such
waceguides, PCWs lose the well-defined modal discreteness, and a kind
of mode bunching is observed instead, which becomes much more
prominent in PCWs with high bends. However, with the increase in
cross-sectional size, the mode-bunching tendency is slightly reduced. The
general expressions for power in the guiding and nonguiding sections are
obtained, and the fractional power patterns in all of the sections are
presented for PCWs of various cross-sectional dimensions. It is observed
that the confinement of power in the core section is increased for PCWs
of larger cross-sectional size. Moreover, a fairly uniform distribution of
power is seen over the modes having intermediate values of propagation
constants
Sheeja, N K; Santhosh Kumar, G; Humayoon Kabir, S; Surendran, Cherukodan(INFLIBNET Centre, March , 2013)
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Abstract:
The present study is an attempt to highlight the problem of typographical errors in OPACS. The
errors made while typing catalogue entries as well as importing bibliographical records from other
libraries exist unnoticed by librarians resulting the non-retrieval of available records and affecting
the quality of OPACs. This paper follows previous research on the topic mainly by Jeffrey Beall and
Terry Ballard. The word “management” was chosen from the list of likely to be misspelled words
identified by previous research. It was found that the word is wrongly entered in several forms in
local, national and international OPACs justifying the observations of Ballard that typos occur in
almost everywhere. Though there are lots of corrective measures proposed and are in use, the study
asserts the fact that human effort is needed to get rid of the problem. The paper is also an invitation
to the library professionals and system designers to construct a strategy to solve the issue
Description:
9th International CALIBER - 2013, INFLIBNET Centre, Gandhinagar, Gujarat, March 21-23, 2013
Santhosh Kumar, G; Surendran, Cherukodan; Sheeja, N K; Humayoon Kabir, S(INFLIBNET Centre, Ahmedabad, 2013)
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Abstract:
The present study is an attempt to highlight the problem of typographical errors in OPACS. The
errors made while typing catalogue entries as well as importing bibliographical records from other
libraries exist unnoticed by librarians resulting the non-retrieval of available records and affecting
the quality of OPACs. This paper follows previous research on the topic mainly by Jeffrey Beall and
Terry Ballard. The word “management” was chosen from the list of likely to be misspelled words
identified by previous research. It was found that the word is wrongly entered in several forms in
local, national and international OPACs justifying the observations of Ballard that typos occur in
almost everywhere. Though there are lots of corrective measures proposed and are in use, the study
asserts the fact that human effort is needed to get rid of the problem. The paper is also an invitation
to the library professionals and system designers to construct a strategy to solve the issue
Description:
9th International CALIBER - 2013, INFLIBNET Centre, Gandhinagar, Gujarat, March 21-23, 2013
Poulose Jacob,K; David, Peter S; Sreela Sasi(June , 2006)
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Abstract:
This paper discusses the complexities involved in managing and monitoring the delivery of IT services in a multiparty outsourcing environment. The complexities identified are grouped into four categories and are tabulated. A discussion on an attempt to model a multiparty outsourcing scenario using UML is also presented and explained using an illustration. Such a model when supplemented by a performance evaluation tool can enable an organization to manage the provision of IT services in a multiparty outsourcing environment more effectively
Louis, Godfrey; Varughese, George; Santhosh Kumar, A; Philip, J(Indian Academy of Sciences, 2008)
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Abstract:
The double sulfate family (ABSO4), where A and B are alkali metal cations, is the object of great
interest owing to the complexity and richness of its sequence of phase transition induced by temperature
variation. A new sulfate salt characterized by the presence of water molecule in the unit cell with the chemical
formula, Li2Na3(SO4)2⋅6H2O (LSSW), was obtained. The ultrasonic velocity measurement was done with pulse
echo overlap technique [PEO]. All the six second order elastic stiffness constants, C11 = C22, C33, C44 = C55, C12,
C14 and C13 = C23 are reported for the first time. The anisotropy in the elastic properties of the crystal are well
explained by the pictorial representation of the polar plots of phase velocity, slowness, Young’s modulus and
linear compressibility in a–b and a–c planes.
Maya L Pai; Dr. A N Balchand; Dr. K V Pramod(Cochin University of Science and Technology, May 12, 2016)
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Abstract:
ANN based long range forecast of Indian summer monsoon rainfall for
the hydrological regions of India using ocean and atmosphere state
parameters with improved accuracy,Trend analysis of SST, sub surface temperature of Indian Ocean and
that of ISMR.
3. Prediction of extreme rainfall events using ANN.
Anantharaman, M R; Hysen, T; Salim, Al-Harthi; Al-Omari, I A; Geetha, P; Lisha, R; Ramanujan, R V; Sakthi Kumar, D(Elsevier, April 18, 2013)
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Abstract:
Co–Fe–Si based films exhibit high magnetic moments and are highly sought after for applications like soft under layer sinper pendicular recording mediatomagneto-electro-mechanical sensor applications.In this workt he effect of annealing on
s tructural,morphologicaland magnetic propertiesofco–Fe–Si thin films wasinvestigated.compositional analysis using x-rayphotoelectron spectroscopy and secondary ion massspectroscopyrevealedanativeoxidesurfacelayerconsistingofoxidesofco,feandsionthe surface. The morphology of theas deposited films shows mound like structures conformingtothe Volmer–Webergrowthmodel.Nanocrystallisationofamorphous films upon annealing was observed by glancing anglex-raydiffraction and transmission electron microscopy.Theevolutionofmagnetic properties with annealing is explained using the Herzermodel.Vibrating sample magnetometry measurements carried out at various angles from01 to 901 to the applied magnetic field were employed to study the angula rvariation of coercivity.The angular variation fits the modified Kondorsky model. Interestingly,the coercivity evolution with annealing deduced frommagneto-opticalKerreffectstudies indicates areversetrendcomparedtomagetisationobservedinthebulk.Thiscanbeattributedtoa domain wallpinningatnativeoxidelayeronthesurfaceofthin films. Theevolutionofsurfacemagnetic properties iscorrelatedwithmorphologyevolutionprobedusingatomicforcemicroscopy.The morphology aswellasthepresenceofthenativeoxidelayerdictatesthesurfacemagneticproperties and this is corroborated by the apparent difference in the bulk and surface magnetic properties
Riju, C Issac; Harilal, S S; Bindhu, C V; Geetha K, Varier; Nampoori, V P N; Vallabhan, C P G(Elsevier, 1997)
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Abstract:
A laser produced plasma from the multielement solid target YBa2Cu3O7 is generated using 1.06 μm, 9 ns pulses from a Q-switched Nd:YAG laser in air at atmospheric pressure. A time resolved analysis of the profile of the 4554.03 Å resonance line emission from Ba II at various laser power densities has been carried out. It has been found that the line has a profile which is strongly self-reversed. It is also observed that at laser power densities equal to or exceeding 1.6×1011 W cm−2, a third peak begins to develop at the centre of the self-reversed profile and this has been interpreted as due to the anisotropic resonance scattering (fluorescence). The number densities of singly ionized barium ions evaluated from the width of the resonance line as a function of time delay with respect to the beginning of the laser pulse give typical values of the order of 1019 cm−3. The higher ion concentrations existing at smaller time delays are seen to decrease rapidly. The Ba II ions in the ground state resonantly absorb the radiation and this absorption is maximum around 120 ns after the laser pulse.
Bindhu, C V; Harilal, S S; Issac, Riju C; Geetha K, Varier; Nampoori, V P N; Vallabhan, C P G(Pramana, March , 1995)
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Abstract:
Thermal lens signals in solutions of rhodamine B laser dye in methanol are
measured using the dual beam pump-probe technique. The nature of variations of signal
strength with concentration is found to be different for 514 and 488 nm Ar + laser excitations.
However, both the pump wavelengths produce an oscillatory type variation of thermal lens
signal amplitude with the concentration of the dye solution. Probable reasons for this peculiar
behaviour (which is absent in the case of fluorescent intensity) are mentioned.
Poulose Jacob,K; Surekha, Mariam Varghese(2007 ACADEMY PUBLISHER, December 1, 2007)
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Abstract:
This paper discusses our research in developing
a generalized and systematic method for anomaly detection.
The key ideas are to represent normal program behaviour
using system call frequencies and to incorporate
probabilistic techniques for classification to detect
anomalies and intrusions. Using experiments on the
sendmail system call data, we demonstrate that concise and
accurate classifiers can be constructed to detect anomalies.
An overview of the approach that we have implemented is
provided.