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Sathish Kumar, T.
- Hill Climbing Key Dissemination Approach in Wireless Sensor Networks
Abstract Views :155 |
PDF Views:4
Authors
Affiliations
1 Department of Computer Science and Engineering, Anna University of Technology, Coimbatore, IN
1 Department of Computer Science and Engineering, Anna University of Technology, Coimbatore, IN
Source
Wireless Communication, Vol 3, No 5 (2011), Pagination: 383-392Abstract
We consider routing security for filtering adversaries in wireless sensor networks. Many sensor network routing protocols have been proposed, but none of them have been designed with security as a goal in wireless sensor networks. In wireless sensor networks offer unprecedented capabilities to monitor the physical world by reporting the occurrence of interested events. Unfortunately, such WSN are vulnerable to event fabrication attacks, in which the compromised nodes inject bogus reports into the network, fabricating non-existent events “appearing” at arbitrary locations. Most existing routing security solutions to these attacks need to share symmetric keys among sensor nodes. In this paper, we propose a Hill Climbing Dissemination Approach in Wireless Sensor Networks (HCD) that drops fabricated reports en-route without symmetric key sharing. In HCD, the source node establishes a secret association with the base station on a per-session basis, while the intermediate forwarding nodes are equipped with a witness key. Through the usage of a hill climbing and hash chain, a forwarding node can use the witness key to verify the authenticity of the reports without knowing the original session key using MAC. As a result, HCD can achieve stronger security protection than the existing symmetric key sharing approach in wireless sensor networks.Keywords
Secure Routing, GPS, Data Reporting, En-Route Filtering Scheme, Wireless Sensor Networks, Cryptographic.
- Mechanical Behaviour of Geopolymer Concrete Under Ambient Curing
Abstract Views :133 |
PDF Views:0
Authors
Affiliations
1 Department of Civil Engineering, Kongu Engineering College, Perundurai-638052, IN
1 Department of Civil Engineering, Kongu Engineering College, Perundurai-638052, IN
Source
International Journal of Scientific Engineering and Technology, Vol 3, No 2 (2014), Pagination: 130-132Abstract
Utilisation of fly ash and Ground Granulated Blast Slag as an alternative material in concrete reduces the use of OPC in concrete. Evolution of geopolymer concrete cured at ambient temperature broadens its suitability and applicability to concrete based structures. This paper presents the mix proportions and outcome of an experimental study on the density and compressive strength of geopolymer concrete. Fly ash was used as a base material which was made to react with sodium hydroxide and sodium silicate solution to act as a binder for fine and coarse aggregate. Ground Granulated Blast Slag was replaced in different proportions to fly ash to enhance various properties of concrete. The concrete was subjected to curing at ambient temperature. Based on the study carried out, replacement of GGBS in fly ash up to 50% produced better mechanical properties.Keywords
Concrete, Geopolymer, Ground Granulated Blast Slag, Ambient Curing.Full Text
- IHHNV Infection from the Wild Shrimps of Andaman and Nicobar Islands, India
Abstract Views :207 |
PDF Views:85
Authors
K. Saravanan
1,
P. Puneeth Kumar
1,
Arunjyoti Baruah
1,
J. Praveenraj
1,
T. Sathish Kumar
2,
S. Pramod Kumar
1,
T. Sivaramakrishnan
1,
A. Anuraj
1,
J. Raymond Jani Angel
1,
R. Kiruba Sankar
1,
S. Dam Roy
1
Affiliations
1 ICAR-Central Island Agricultural Research Institute, Port Blair 744 105, IN
2 ICAR-Central Institute of Brackishwater Aquaculture, 75 Santhome High Road, Raja Annamalai Puram, Chennai 600 028, IN
1 ICAR-Central Island Agricultural Research Institute, Port Blair 744 105, IN
2 ICAR-Central Institute of Brackishwater Aquaculture, 75 Santhome High Road, Raja Annamalai Puram, Chennai 600 028, IN
Source
Current Science, Vol 113, No 10 (2017), Pagination: 2027-2031Abstract
The present study was intended to screen the wild shrimps of Andaman and Nicobar Islands (ANI) against infectious diseases. A total of 175 shrimp samples (35 pools) consisting of Fenneropenaeus indicus, Penaeus monodon, Penaeus merguiensis and Metapenaeus monoceros were collected from different landing centres across ANI. Out of 35 pools of samples analysed by polymerase chain reaction (PCR), a total of 10 pools of Penaeus monodon collected from Betapur (1 pool), Lohabarrack (4 pools) and Campbell Bay (5 pools) were found positive for Infectious Hypodermal and Hematopoietic Necrosis Virus (IHHNV). Nucleotide sequence of IHHNV isolated from ANI showed 100% identity to the sequences of IHHNV reported from Vietnam, Taiwan, Australia, China, Egypt, USA, Ecuador, 99% identity to IHHNV reported from Brazil, Venezuela, Korea, 96% identity to IHHNV reported from Thailand and 95% identity to IHHNV reported from India. Based on phylogenetic tree analysis, IHHNV of ANI is closely related to IHHNV of Vietnam. Histopathological analysis revealed typical eosinophilic intranuclear cowdry type A inclusion bodies in gill lamellae which further confirmed the IHHNV infection. The present study provides a definitive evidence for the first report of infectious IHHNV in wild P. monodon from ANI.Keywords
Andaman and Nicobar Islands, Disease Surveillance, IHHNV, Penaeus monodon, Wild Shrimp.Full Text
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