1,033 research outputs found
Two-dimensional transonic testing with splitter plates
The use of splitter plates for two dimensional transonic testing in wind tunnels was investigated on a 12% biconvex airfoil section over the Mach number range 0.6 to 1.0. Measured pressure distributions were compared to transonic theory and to other experiments, including an investigation in the same facility without splitter plates. The results of the experiment show the best agreement with theory over the entire transonic Mach number range
Spread Spectrum based QoS aware Energy Efficient Clustering Algorithm for Wireless Sensor Networks
Wireless sensor networks (WSNs) are composed of small, resource-constrained sensor nodes that form self-organizing, infrastructure-less, and ad-hoc networks. Many energy-efficient protocols have been developed in the network layer to extend the lifetime and scalability of these networks, but they often do not consider the Quality of Service (QoS) requirements of the data flow, such as delay, data rate, reliability, and throughput. In clustering, the probabilistic and randomized approach for cluster head selection can lead to varying numbers of cluster heads in different rounds of data gathering. This paper presents a new algorithm called "Spread Spectrum based QoS aware Energy Efficient Clustering for Wireless sensor Networks" that uses spread spectrum to limit the formation of clusters and optimize the number of cluster heads in WSNs, improving energy efficiency and QoS for diverse data flows. Simulation results show that the proposed algorithm outperforms classical algorithms in terms of energy efficiency and QoS
Does the 65 cm height cut-off as age proxy exclude children eligible for nutritional assessment in Bangladesh?
Prospects for development of oyster culture in India
Oysters occur all along the Indian coasts in
backwaters, bays and estuaries forming subsistence
fisheries. The meat is consumed locally and
of late there is growing demand for it in some
parts of the country. The shell is used in lime
based industries. At present oyster culture is not
practised in the country except for the
experimental culture conducted by the CMFRI
Development and characterization of PLA nanoparticles for pulmonary drug delivery:Co-encapsulation of theophylline and budesonide, a hydrophilic and lipophilic drug
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