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Search Results: 1 - 10 of 191403 matches for " D. Manivannan "
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WSN: Key Issues in Key Management Schemes-A Review
D. Manivannan,P. Neelamegam
Research Journal of Applied Sciences, Engineering and Technology , 2012,
Abstract: The real challenges in the field of Wireless Sensor Networks (WSN) are to control the trade-off between providing security and conserving scarce resources. To provide security besides cryptographic primitives, secret key also play a vital role. The reason for key management is to set up and to provide secure channels among sensor nodes in WSN applications. Various key management schemes are proposed for WSN. Deploying sophisticated network based Key Management protocol in WSN is critical and important task. From the literature survey, it is understand that more energy is consumed to establish wireless sensor network in any real time applications. In this paper, various key issues in key management schemes are discussed based on the evaluation metrics such as energy responsiveness, key connectivity, resilience, scalability and efficiency.
Transaction-Consistent Global Checkpoints in a Distributed Database System
Jiang Wu,D. Manivannan,Bhavani Thuraisingham
Lecture Notes in Engineering and Computer Science , 2008,
Analysis of Various Deterioration Factors of Data Aggregation in Wireless Sensor Networks
International Journal of Engineering and Technology , 2013,
Abstract: In embedded systems, wireless sensor network is the interesting field which provides various applications such as battlefield surveillance, disaster management, habitat monitoring, home automation, health caresystems etc. Wireless sensor network (WSN) handles a huge number of tiny, cost effective, low powered, autonomous devices called sensor nodes which can perform sensing, processing and communicating operations. WSN has many constraints like energy utilization, limited memory and power consumption. Data aggregation is an intelligent technique which accumulates data from disparate sources by usingvarious aggregation techniques. One of the crucial techniques in WSN is data aggregation which greatly increases the energy efficiency and network lifetime by reducing the number of data transmissions. Toperform data aggregation in an efficient manner, there are lot of issues are to be considered. In this paper several issues related with data aggregation are discussed and comparisons of various design issues of various data aggregation protocols are also addressed.
Gas Leakage Detection and Monitoring Based on Low Power Microcontroller and Xbee
International Journal of Engineering and Technology , 2013,
Abstract: Gas leakage detection and monitoring through wireless sensor network is considered to be more economical for industries gas leakage. Main purpose of this system model is to avoid damages and safety of gas industry. The entire control system is based on is based on low power MSP430 microcontroller and Xbee techniques. The sensor node helps in collecting data regarding gas leakage and the particular area of sensor node address is located. The collected information is sent to the monitoring client or user to update the data. Data packets are continuously transmitted from sensor nodes and communication devices. This system helps to minimizing human intervention and reduces power consumption, thus providing greater performance. This paper focus on overall modeling and design on both software and hardware part to accomplish it.
Arm To Arm Interface Using Embedded C
International Journal of Engineering and Technology , 2013,
Abstract: Embedded systems are the most emerging field in these recent years. In this paper a different number of ARM processors (LPC2148 and LPC2378) are interconnected using C for distributed services. N numbers of processors are connected as the network and each processing devices are interlinked with each other, so that the each data that is processed by the devices and it can be used by the other device to activate their entire process. All the processed data’s are communicated to other device through Xbee interface card. LPC2148 and LPC2378 ARM processors are used in this prototype and winXtalk is used as a software terminal window. In this paper, the ultimate benefits of multiple processor interactions related to the embedded applications and design issues of processor interconnection are discussed. The features of multiple processor interaction in inter process communication and executions of embedded multitasking are also discussed. In modern embedded computing platform, embedded processor used in various applications like home automation, industrial control, medical system, access control, etc. In this paper, using embedded processor interactions, the several data communication is established.
Genetic diversity analysis of groundnut genotypes using SSR markers
D. Shoba, N. Manivannan and P.Vindhiyavarman
Electronic Journal of Plant Breeding , 2010,
Abstract: Groundnut (Arachis hypogaea L.), an important oilseed crop is a rich source of oil and protein. Molecular marker technologies are the effectivetools and they are used for the assessment of genetic variability because they are not influenced by the environment. Among the molecularmarkers, Simple Sequence Repeat (SSR) has proved to be the most powerful tool for variety identification in groundnut and has much potential ingenetic and breeding studies. Among the 17 SSR primer pairs used for assessing the genetic diversity, 6 primer pairs (24.0 per cent) werepolymorphic. The genotype TMV 2 was susceptible to rust and late leaf spot diseases and it was separately clustered in the dendrogram andamong the eleven foliar disease resistant genotypes, the genotypes viz., COG 0423, COG 0436 and COG 0432 were distantly clustered fromTMV 2. Hence, by using the genotypes viz., TMV 2, COG 0423, COG 0436 and COG 0432, three combinations viz., TMV 2 x COG 0423, TMV2 x COG 0436 and TMV 2 x C0G 0432 could be made for further studies.
Association analysis between oil yield and its component characters in Jatropha
Umamaheswari D,M. Paramathma,N. Manivannan
Electronic Journal of Plant Breeding , 2009,
Abstract: The present study was undertaken to determine the correlation and path analysis in interspecific hybrids of Jatropha.Thirteen families along with one check were taken for study. The present investigation revealed that the characters such asseed yield per plant, weight of the capsules per plant, number of seeds per plant, number of capsules per plant, number offlower clusters per plant and oil content recorded siginificant and positive correlation with oil yield per plant. The pathanalysis also showed that the characters viz., weight of the capsules per plant and number of seeds per plant showed highpositive and direct effect on oil yield per plant, whereas number of capsules per plant recorded positive and high indirecteffect via number of seeds per plant on oil yield per plant.
Studies on Variability, Heritability and Genetic Advance in Groundnut (Arachis hypogaeae L.)
Shoba D,N. Manivannan,P.Vindhiyavarman
Electronic Journal of Plant Breeding , 2009,
Abstract: Crosses were made to develop a foliar disease resistant groundnut lines with acceptable pod and kernel traits using TMV 2and three foliar disease resistant parents. Three F2 cross derivatives and their four parents were used to study their meanperformance, genetic variability, heritability and genetic advance as percentage of mean for yield and contributingcharacters. Among the crosses, TMV2 x COG0437 had higher mean performance for all the characters followed by TMV2x COG 438. Higher PCV and GCV values were also recorded by this cross. The cross TMV2 x COG0437 had highheritability and high to moderate GAM for most of characters followed by TMV2 x COG0438. Hence, based on mean andvariability parameters, TMV2 x COG437 is adjudged as best cross combination for further selection programme to evolve apromising progeny.
Molecular genetic diversity analysis in seed sources of Jatropha (Jatropha curcas L) using ISSR markers
D. Umamaheswari, M. Paramathma and N. Manivannan
Electronic Journal of Plant Breeding , 2010,
Abstract: The extent of genetic diversity among 17 seed sources of Jatropha curcas was studied using 13 ISSR primers along with itscombinations. The number of bands produced by 13 individual primers ranged from 1 to 10. The percentage polymorphism orpolymorphic percentage ranges from 100 to 33.3 and the PIC value varied from 0.89 to 0.65. Among 13 ISSR primers, twoprimers viz., 895 and 899 produced 100% polymorphism.These genotypes were also tested with 78 combination primers for itsamplification. Out of seventy eight combinations, eight combinations were found to exhibit 100% polymorphism and its PIC valueranged from 0.86 to 0.38. The genetic similarity index was used to construct a dendrogram which illustrated that the 17genotypes fall into five clusters at 0.72 Jaccard’s similarity coefficient and the same data was used to construct the radial treeusing Darwin software. Both these software identified the two genotypes CJC 1 and CJC 19 as diverse. These diverseaccessions can be utilized in breeding programme to obtain more variability.
Gene effects of pod yield and its components in three crosses of groundnut (Arachis hypogaea L.)
D. Shoba, N. Manivannan and P.Vindhiyavarman
Electronic Journal of Plant Breeding , 2010,
Abstract: Groundnut, (Arachis hypogaea L.) is a major source of vegetable oil and protein and also a major source of fodder crop. Genetic systems thatcontrol the expression of quantitative traits facilitate the choice of the most efficient breeding and selection procedure. Generation mean analysis is commonlyused in studies of inheritance of quantitative traits. Four groundnut genotypes which consist of three late leaf spot and rust resistant genotypes viz., COG 0437,COG 0438 and ICGV 97150 and one susceptible genotype TMV 2 were used in the present study. The cross TMV 2 x ICGV 97150 had additivegene action for most of the traits viz., plant height, number of pods per plant, pod yield per plant, kernel yield per plant, hundred kernel weightand shelling percentage. Hence, early generation selection could be practiced in TMV 2 x ICGV 97150. However due to the presence of epistasis,especially for rust and LLS incidence in other two crosses viz., TMV 2 x COG 0437 and TMV 2 x COG 0438, selection should be postponed tolater generations.
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