Santhosh Kumar, G(Cochin University of Science And Technology, June 23, 2010)
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Abstract:
Page 1. Webhosting and Networking G. Santhosh Kumar, Dept. of Computer Science Cochin
University of Science and Technology Page 2. Agenda What is a Network? Elements of a Network
Hardware Software Ethernet Technology World Wide Web Setting up a Network Conclusion Page
3. What is a Network? An interconnected system of things or people Purpose of a Network?
Resource Sharing Communication LANs have become the most popular form of Computer
Networks Page 4. Principle of Locality of Reference Temporal Locality of Reference ...
Archana, S N; Dr.Humayoon,Kabir S(Cochin University of Science and Technology, June , 2010)
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Abstract:
Websites of academic institutions are the prime source of information about
the institution. Libraries, being the main provider of information for the academics,
need to be represented in the respective homepages with due importance. Keeping
this in mind, this study is an attempt to understand and analyze the presence and
presentation of libraries of Engineering Colleges (EC) in Kerala in their respective
websites. On the basis of the reviewed literature and an observation of libraries of
nationally important institutions imparting technical education in India, a set of
criteria were developed for analyzing the websites/web pages. Based on this an extensive
survcy of the websites of ECs were done. The collected data was then analyzed
using Microsoft Excel. The library websites were then ranked on the basis of this
analysis. It was observed that majority of the websites of ECs in Kerala have least
representation of their respective libraries. Another important observation is that
even the highest scoring libraries satisfy only half of the criteria listed for analysis.
Manju, Kurian; Sugunan, S(Elsevier, January , 2006)
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Abstract:
Wet peroxide oxidation (WPO) of phenol is an effective means for the production of diphenols, which are of great industrial importance. An added advantage of this method is the removal of phenol from wastewater effluents. Hydroxylation of phenol occurs efficiently over mixed iron aluminium pillared montmorillonites. An initial induction period is noticed in all cases. A thorough study on the reaction variables suggests free radical mechanism for the reaction.
Manjusha, M; Dr.Bright Singh,I S(School of Environmental Studies,Faculty of Marine Sciences, 2003)
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The present study is the first comprehensive approach towards histopathology of White Spot Syndrome Virus (WSSV) in Penaeus indicus. WSSV could be demonstrated in the nuclei of all tissues, except those of midgut, subjected of electron microscopic observation. They were the nuclei of gill, foregut, heart, hepatopancreatic connective tissue, hindgut, nerve and dorsal aorta. A comparison was made between the electron microscopic and histopathological observations and a greater degree of correlation between the two in depicting the severity of the infection of the infection was unraveled. The study also illustrated variations in response and susceptibility of various tissues to WSSV infection. Accordingly, out of the tissues investigated, gill, foregut, hindgut and dorsal aorta exhibited advanced viral multiplication than the other tissues such as heart, midgut, nerve and hepatopancreas. Even though hepatocytes were not infected the connective tissue nuclei were packed with virions.
Mythili, P; Babita, Jose R; Jimson, Mathew; Pradhan, D K(IEEE, December 10, 2007)
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Abstract:
This work presents a wideband low-distortion sigmadelta
analog-to-digital converter (ADC) for Wireless Local Area
Network (WLAN) standard. The proposed converter makes use
of low-distortion swing suppression SDM architecture which is
highly suitable for low oversampling ratios to attain high
linearity over a wide bandwidth. The modulator employs a 2-2
cascaded sigma-delta modulator with feedforward path with a
single-bit quantizer in the first stage and 4-bit in the second stage.
The modulator is designed in TSMC 0.18um CMOS technology
and operates at 1.8V supply voltage. Simulation results show
that, a peak SNDR of 57dB and a spurious free dynamic range
(SFDR) of 66dB is obtained for a 10MHz signal bandwidth, and
an oversampling ratio of 8.
Description:
Information, Communications & Signal Processing, 2007 6th International Conference on
Lethakumary,B; Sreedevi, Menon K; Priya,Francis; Aanandan,C K; Mohanan, P(Microwave and Optical Technology Letters, January 20, 2005)
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Abstract:
In this paper, we introduce a novel feeding technique for
bandwidth enhancement of a rectangular microstrip antenna This antenna
offers an impedance bandwidth of 22% without degrading the effciencv.
The effect of the feed parameters upon patch characteristics
such as resonant frequency, impedance bandwidth, and radiation pattern are studied in detail. The experimental results are verified using the
FDTD results
Sreedevi, Menon K; Lethakumary,B; Mohanan, P; Bijumon, P V; Sebastian,M T(Microwave and Optical Technology Letters, August 20, 2004)
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Abstract:
A broadband cylindrical dielectric resonator antenna
(DRA) energized with an L-strip feed is presented The novel exciting
technique achieves a 2:1 VSWR bandwidth of 18%. The variation of
bandwidth for different feed parameters is also studied
The design and development of an L-band printed dipole antenna.
optimized for wide-band applications near first resonance, is reported.
This design has achieved more than 48% impedance bandwidth
(VSWR 2:1), without degrading its overall radiation efficiency
Sarin, V P; Nisha, Nassar; Deepu, V; Aanandan,C K; Mohanan, P; Vasudevan, K(Antennas and Wireless Propagation Letters, IEEE, 2009)
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Abstract:
A simple electromagnetically coupled wideband printed microstrip antenna having a 2:1 VSWR bandwidth of 38% covering the 5.2/5.8-GHz WLAN, HIPERLAN2, and HiSWANa communication bands is presented. The large bandwidth is obtained by adding a rectangular metal strip on a slotted square microstrip antenna. The antenna occupies an overall dimension of 42 times 55 times 3.2 mm3 when printed on a substrate of dielectric constant 4. It exhibits good radiation characteristics and moderate gain in the entire operating band. Details of the design along with experimental and simulation results are presented and discussed.
Suma,M N; Bybi, P C; Mohanan, P(Wiely, May , 2006)
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Abstract:
A planar monopole antenna suitable for broadband wireless communication is designed and developed. With the use of a truncated ground plane, the proposed printed monopole antenna offers nearly 60% 2:1 VSWR bandwidth and good radiation characteristics for the frequencies across the operating band. A parametric study of the antenna is performed based on the optimized design, and a prototype of the antenna suitable for 2.4-GHz WLAN application is presented. The antenna can be easily integrated into wireless circuitry and is convenient for application in laptop computers.
Lethakumary,B; Sreedevi, Menon K; Aanandan,C K; Mohanan, P(Microwave and Optical Technology Letters, April 5, 2003)
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Abstract:
An electromagnetically coupled T-shaped microstrip feed
used to enhance the impedance bandwidth of a rectangular microstrip
antenna is reported. The proposed antenna offers a 2:1 VSWR bandwidth
of -36% with an increase in gain of 0.8 dB
Sreedevi, Menon K; Lethakumary,B; Vasudevan, K(Microwave and Optical Technology Letters, November 5, 2002)
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Abstract:
Bandwidth enhancement of a rectangular microstrip
antenna using a T-shaped microstrip feed is explored in this paper.
A 2:1 VSWR impedance bandwidth of 23% is achieved by employing
this technique. The far-field patterns are stable across the pass band.
The proposed antenna can be used conveniently in broadband communications
Mathew, K T; Stephen,D S; Aanandan,C K; Mohanan, P; K G Nair(Department of Electronics, May 12, 1994)
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Abstract:
A trapezoidal strip grating surface that eliminates specular
reflections almost over the entire X -band frequency range for TM
polarization is reported This new grating structure overcomes the
bandwidth limitation of conventional rectangular strip grating surfaces
Poulose Jacob,K; Santhosh, Simon(International Journal of Modern Engineering Research, 2012)
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The evolution of wireless sensor network technology has enabled us to develop advanced systems for real time monitoring. In the present scenario wireless sensor networks are increasingly being used for precision agriculture. The advantages of using wireless sensor networks in agriculture are distributed data collection and monitoring, monitor and control of climate, irrigation and nutrient supply. Hence decreasing the cost of production and increasing the efficiency of production.This paper describes the application of wireless sensor network for crop monitoring in the paddy fields of kuttand, a region of Kerala, the southern state of India.
Description:
International Journal of Modern Engineering Research (IJMER)
www.ijmer.com Vol.2, Issue.4, July-Aug 2012 pp-2017-2020
Smijin, Soman K; Dr. Paulose, C S(Cochin University of Science and Technology, July 2, 2012)
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The onset of spontaneous seizures triggers a cascade of molecular and cellular events that eventually leads to neuronal injury and cognitive decline. The present study investigated the effect of Withania somnifera (WS) root extract and Withanolide A (WA) in restoring behavioural deficit by inhibiting oxidative stress induced alteration in glutamergic neurotransmission. The subdued performance in
behavioural tests shows impaired motor coordination and memory. Histopathological investigations revealed significant neuronal loss in hippocampus of epileptic rats indicating glutamate mediated excitotoxicity. The treatment with WS and WA restored behavioural deficit and ameliorated neuronal loss. An altered redox homeostasis leading to oxidative stress is a hallmark of TLE. The antioxidant potential was afflicted in epileptic rats, evident from altered activity of SOD and CAT, down regulation of SOD and GPX expression and enhanced lipid peroxidation. The antioxidant property of WS and WA restored altered antioxidant capacity. Alteration in GDH activity and down regulation of GLAST expression resulted in enhanced glutamate content in the brain regions. The metabolism of glutamate was altered in the form of down regulated GAD expression. The alteration in synthesis, transport and metabolism resulted in further increase of the glutamate concentration at the synapse leading to glutamate mediated excitotoxicity. The decreased NMDA and AMPA receptor binding and down
regulated NMDA R1, NMDA 2B and AMPA (GluR2) mRNA expression indicated altered glutamergic receptor function. The treatment with WS and WA reversed altered glutamergic receptor function, synthesis, transport and metabolism. The enhanced levels of second messenger IP3 responsible for Ca2+ mediated toxicity was reversed after treatment with WS and WA. Neurotoxics concentration of glutamate resulted in up regulation of pro apoptotic factors Bax and Caspase 8 and down regulation of anti apoptotic factor Akt resulting in neuronal death. The treatment with WS and WA resulted in activation of Akt and down regulation of Bax and caspase 8 leading to blocking of apoptotic pathway.
The treatment with WS and WA resulted in reduced seizure frequency and amelioration of associated alterations suggesting the therapeutic role of Withania somnifera in temporal lobe epilepsy
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Department of Biotechnology, Cochin University of Science and Technology
Celine, Scaria K; Dr.George, C M(Cochin University of Science And Technology, July , 1985)
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The corporate views on wives roles and their subsequent involvement in their husbands career seem to be quiet surprising .Even though the corporate magnates are aware of wives influence on husbands professional advancements they seldom give credit to this factor. Again it may be an eye opener for the corporations which hardly take note of the executives wives their likes or dislikes, their expectations or frustrations. They are to understand that man in his totality and decisions affecting his family have to be taken seriously. More over they should respect the right of the wives by understanding the exact role played by them. Thus this study is to understand the roles and contributions of executives wives to the success of their husbands in their professions. The study tries to minimize the gap between the corporations and the wives ,and also to make the wives aware of their peculiar role in the career advancement of their executive husbands.
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School of management studies, Cochin University of Science And Technology