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Search Results: 1 - 10 of 70 matches for " Tamilselvan Kathiravan "
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Institutional Foods Development Perspectives Review  [PDF]
Ranganathan Kumar, Tamilselvan Kathiravan, Ramalingam Rajamanickam, Shanmugam Nadanasabapathi
Food and Nutrition Sciences (FNS) , 2013, DOI: 10.4236/fns.2013.49114
Abstract:

Development of food service institution has been initiated by industrialization and has grown rapidly over the last half century. Institutional Food Service includes planning, preparation, distribution and supply of foods outside home. Consumer perceptions towards institutional foods are influenced by marketing, advertising and lifestyle changes. Food service systems/catering units promote new processing methods and bulk packaging of food to conquer problems like skilled labour shortage and reduce the operation cost. This review emphasize on the evolution of food services (vending, industrial food services, school lunch, hospital etc.) and its importance. It also highlights the attributes for making institutional foods more acceptable for consumers and their role of human engineering.

Comparing Traditional Life Insurance Products in the Indian Market: A Consumer Perspective
S. Tamilselvan
Bonfring International Journal of Industrial Engineering and Management Science , 2011, DOI: 10.9756/bijiems.1001
Abstract: Life insurance policies are valuable assets to mitigate the financial risk of untimely death. As such, every individual facing such a financial risk who can afford to pay for such a protection must seriously consider purchasing some life insurance. In the current Indian market, this choice is difficult on three counts: ? Inherent complexity due to uncertainty and long time horizons. ? The need to compare a plethora of different types of products from competing insurance companies. ? Most insurance policies bundle pure insurance with savings to offer composite products. ? There are two broad types of life insurance policies available in the Indian market: i. Traditional? products consisting of Term Insurance, Endowment and Whole Life Policies ii. ?Modern? products, which are unit-linked life insurance policies where the investment risks is borne by the policyholder. ? This paper is an attempt at a comparative evaluation of the Traditional Insurance Policies available in the Indian Market from a consumers? perspective: i. Which type of traditional insurance product should I buy? ii. Which insurance company?s product should I buy? iii. Is it better to save through insurance policies or through the widely available tax-advantaged Public Provident Fund (PPF)? ? We use an expected present value approach, data on mortality rates, currently prevailing premiums on insurance policies and interest rates- for the comparison within and across policy types. ? We conclude as follows: i. Shopping around will save a lot of money for an insurance buyer ii. Term insurance should be the primary choice for insurance protection iii. PPF is likely to be a better savings option than buying endowment or whole life policies.
Routing Security in Mobile Ad-hoc Networks
Latha Tamilselvan,V. Sankaranarayanan
Asian Journal of Information Technology , 2012,
Abstract: An Ad Hoc network is a collection of mobile nodes that dynamically form a temporary network. Unlike traditional wireless and mobile networks in which mobile nodes communicate with a centralized structure, an Ad Hoc network operates without the use of existing a network infrastructure. It is primarily used for military tactical communication applications with some commercial use. One important issue in Ad Hoc networks is security. The entire system of Ad-Hoc network works on the principle of Trust. If the neighbor s security is compromised or the node is itself hijacked then the security of the entire network is under threat. One of the principal routing protocols used in Ad-Hoc networks is AODV (Ad-Hoc On demand Distance Vector) protocol. The security of the AODV protocol is compromised by a particular type of attack called Black Hole attack. This study provides routing security to the AODV routing protocol by eliminating the threat of Black Hole attacks. Our solution utilizes the sequence numbers used in transmission and reception of data/control packets in AODV to identify the Black Hole and isolate it from the network. Computer simulation using GLOMOSIM shows that our protocol provides better performance than the conventional AODV in the presence of Black Holes with minimal additional delay and hops.
DESIGN OF COMPACT MULTIBAND MICROSTRIP PATCH ANTENNAS
K.S. TAMILSELVAN
Journal of Global Research in Computer Science , 2012,
Abstract: — Microstrip antennas have become a rapidly growing area of research. Their potential applications are limitless, because of their light weight, compact size, and ease of manufacturing. One limitation is their inherently narrow bandwidth. However, recent studies and experiments have found ways of overcoming this obstacle. Design and analysis of Compact Multiband Microstrip Patch Antennas are presented. The antenna is suitable for use in hand-held or other mobile devices. This antenna has a smaller size, and can be built on a double-sided printed circuit board or stamped from thin sheet metal, our aim is to design a patch antenna for frequency ranges starting from 900 MHz to 5.35 GHz which includes the GSM (880-960) GPS (1568-1592 MHz), DCS (1710-1880 MHz), and PCS (1850-1990 MHz). UMTS (1920-2170 MHz), IEEE 802.11 b/g (2400-2484) and WLAN IEEE 802.11a band (5.15-5.35) in order to meet the demand for newer microwave and millimeter-wave systems and emerging telecommunication challenges with respect to size, performance and cost of an antenna. It offers the advantages of light weight, low cost and ease of fabrication. Design of compact multiband microstrip patch antenna includes the analysis of antenna parameters such as Bandwidth, Gain and Directivity which are related to antenna dimensions and their substrate Material parameters. Further we extend our investigations on various methods of improving the bandwidth and gain of the antenna which is used for mobile communication.
Prevention of Co-operative Black Hole Attack in MANET
Latha Tamilselvan,V. Sankaranarayanan
Journal of Networks , 2008, DOI: 10.4304/jnw.3.5.13-20
Abstract: A mobile ad hoc network (MANET) is an autonomous network that consists of mobile nodes that communicate with each other over wireless links. In the absence of a fixed infrastructure, nodes have to cooperate in order to provide the necessary network functionality. One of the principal routing protocols used in Ad hoc networks is AODV (Ad hoc On demand Distance Vector) protocol. The security of the AODV protocol is compromised by a particular type of attack called ‘Black Hole’ attack In this attack a malicious node advertises itself as having the shortest path to the node whose packets it wants to intercept. To reduce the probability it is proposed to wait and check the replies from all the neighboring nodes to find a safe route. Our approach to combat the Black hole attack is to make use of a ‘Fidelity Table’ wherein every participating node will be assigned a fidelity level that acts as a measure of reliability of that node. In case the level of any node drops to 0, it is considered to be a malicious node, termed as a ‘Black hole’ and is eliminated. Computer simulation using GLOMOSIM shows that our protocol provides better security and also better performance in terms of packet delivery than the conventional AODV in the presence of Black holes with minimal additional delay and Overhead.
Development of Textured ITO Optical Windows for Photovoltaic Applications
N. Tamilselvan,Periyasamy Thilakan
Conference Papers in Science , 2013, DOI: 10.1155/2013/560587
Abstract: ITO thin films were deposited on glass substrates using rf magnetron sputtering. Deposition parameters such as the rf power and the oxygen dilution to the plasma are investigated. Films deposited with an increase in rf power were resulting in the film preferential orientation along (100) plane. Oxygen dilution to the plasma at low rf power of 30?W was found to result in a change in preferential orientation from (100) plane to (111) plane. SEM analysis revealed a spotty surface morphology for the (100) films and a granular morphology for the (111) films. The highest transmittance was found for the oxygen diluted (111) film. The highest optical bandgap of 4.33?eV was observed for the pure Ar deposited film. Details are discussed. 1. Introduction Transparent conducting oxide (TCO) thin films have been widely investigated towards the application to solar cell fabrications due to their displayed characteristics of high optical transparency and better electrical conductivity along with environmental stability [1–3]. Basically, the optical and the electrical properties of TCOs depend solemnly on their oxidation conditions. Complete oxidation was found to promote the transparency in the UV-visible range of electromagnetic spectrum, and, in contrary, the incomplete oxidation was found to promote the electronic conductivity [4]. Hence, a careful adjustment between the oxidation and the oxygen vacancy doping paves the way for the attainment of optimum values of optical transparency with optimum electrical conductivity [5]. In this context, indium tin oxide (ITO), a wide bandgap (>3.6?eV) degenerate semiconducting material, shows the highest value of optical transparency greater than 90%, better polycrystalline structures with either (222) or (400) preferred orientation, and the lowest electrical resistivity in the order of 10?5?Ω-cm [4, 5]. Specially, the highest possible carrier doping density in the order of 1021?cm?3 and the associated localization of Fermi level above the conduction band level boost the very low resistivity and high transmittance in the visible region [6, 7]. There are various deposition techniques such as DC and rf magnetron sputtering, evaporation, spray deposition, and solution-based sol-gel used to deposit ITO films and reported the role of various deposition parameters on the resultant optical, electrical, and structural parameters [8–10]. However, the demonstrated maximum possible optical transparency around 90% with better electrical conductivity of ITO becomes the landmark limiting value that directly reduces the solar cell output to
Willingness To Pay for Bovine Breeding Services: The Case of Rural India
G. Kathiravan,M. Thirunavukkarasu
Journal of Animal and Veterinary Advances , 2012,
Abstract: A study was undertaken in Tamil Nadu State of India to assess the farmers Willingness To Pay (WTP) for bovine breeding services. The districts of the State were categorized as Livestock Developed (LD) and Livestock Under Developed (LUD) based on initial base line developed. Contingent Valuation (CV) approach was used to study the farmers maximum WTP value for two types of breeding services: (a) providing animal breeding services at government veterinary centres, (b) extending animal breeding services at farmers door steps. A Payment Card (PC) format was used to assess the farmers maximum WTP for making a cow or buffalo pregnant through Artificial Insemination. The Maximum Likelihood Interval technique was used on interval midpoints. The farmers were willing to pay a maximum of INR.116.39 and INR 139.29 for effecting pregnancy in their cows and buffaloes, respectively, by availing in-centre services, while they were ready to offer INR 190.83 and INR 214.29 for the breeding services delivered at doorsteps. The mean maximum WTP value was found to be more for buffaloes than cows, postulated both in-centre and home services. A significant difference in the WTP values was also noted between LD and LUD districts. Of the factors incorporated in the in-centre service model for cow, district versatility, annual income of farmers, average household education, breed dummy and daily milk production were found to significantly influence the WTP values. Unlike cows, herd size and distance to the centre had a significant role in determining WTP values in buffaloes. WTP values in cows were found to significantly predispose by district versatility, breed dummy, daily milk production and the distance to government veterinary centre for home service. However, in case of buffaloes, these values had a significant influence from district versatility, household income, herd size and daily milk production. The results indicated that the people were willing to pay more for getting their animals conceived at the earliest and this amount was more than what the government charges currently as insemination charges.
Predicting the Probability of Conception in Artificially Inseminated Bovines-A Logistic Regression Analysis
M. Thirunavukkarasu,G. Kathiravan
Journal of Animal and Veterinary Advances , 2012,
Abstract: A study was undertaken to estimate the probability of conception in artificially bred bovines, based on various animal and environmental factors, based on the data collected from 2,283 bovines (1,942 cattle and 241 buffaloes) inseminated at 30 artificial insemination centres in six districts of North-eastern agroclimatic zone of Tamil Nadu State (India). Logistic regression technique was employed to estimate the probability of a particular breedable bovine female not being able to conceive of an artificial insemination. Wald statistic obtained for the independent variables indicated that the coefficients for the variables-species, lactation order, stage of lactation, milk yield, reproductive disorders, distance to artificial insemination centre and month of insemination were all significantly different from 0 at 1 degree of freedom. Positive values of R statistic obtained for species, stage of lactation, reproductive disorder, distance to artificial insemination centre and month of insemination indicated that as these variables increase in value, the likelihood of conception increased by 7.2795, 2.7478, 2.5638, 2.7453 and 1.9778, respectively. The negative R in the case of average milk yield indicated that the likelihood of conception decreased by 0.1973. Small values of R for the statistically insignificant variables such as breed, farm size, land holding and lactation order indicated that these variables had got only smaller partial contributions to the model. Again, 1510 animals not conceived of AI were correctly predicted by the model not to have conceived. Similarly, 745 animals conceived were correctly predicted to have conceived. Of the animals not conceived, 98.82% were correctly classified, while of the animals conceived, 98.68% were correctly classified. Overall, 98.77% of the 2283 bovines were correctly classified to have conceived/not conceived.
A Survey on Livestock Services Use Pattern in Southern Peninsular India
G. Kathiravan,M. Thirunavukkarasu
Research Journal of Animal Sciences , 2012,
Abstract: A survey was undertaken in Southern peninsular state of India, Tamil Nadu, to assess the uptake of livestock services by farmers from various types of service providers for getting their animals treated and bovines bred. The study revealed that 51.55% animal ailments were attended to at public veterinary centres, while 31.85% by veterinarians and 9.85% by para-veterinarians through home services. The role of traditional healers, shops dispensing over the counter medicines and private veterinary clinics were limited in rendering animal healthcare services. The treatments were skewed towards cattle among all categories of service providers. Of the cases reported to the public veterinary centres in the study area, the number of acute medical cases was more followed by chronic medical, gynaecological, acute surgical, chronic surgical and obstetrical cases. Considering the cases attended to by veterinarians through home services, acute medical cases followed by obstetrical cases predominantly attracted the role of veterinarians, although a limited number of other categories of cases were also attended to. Para-veterinarians seemed to have been called for treating obstetrical cases, especially for dystocia and retained placenta mostly, followed by acute medical cases and acute surgical cases to a certain extent. Although, the public veterinary centres were the single major animal health care providers, their role appeared to have been lesser than expected. Contrastingly, the public veterinary centres were the major bovine breeding service provider in the study area, while, natural breeding still remained to be an important mode of breeding.
Reflective writing in case summary assignments
Kathiravan Chinniah,Sivalingam Nalliah
International e-Journal of Science, Medicine & Education , 2012,
Abstract: Outcome and competency-basedundergraduate and graduate medical education isthe desired standard embraced by many medicaleducationists worldwide. Reflective capacity is anintegral component of that strategy and reflective writinghas shown tremendous potential as a delivery tool. Butthere are various challenges in the implementation ofthe initiative. Efficacy as a delivery tool, achievementof pedagogical outcomes, reliability issues, challenges inassessment outcomes/tools, and whether it can be taughtand learnt, need to be addressed. Many questions are stillnot satisfactorily answered, and this review attempts tooffer some perspective on the issues.
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