Results 91 to 100 of about 147,210 (260)

A Genetic Algorithm Based Minimal Maximal Load Tree Routing Algorithm in Wireless Sensor Networks

open access: yesJournal of Electrical and Computer Engineering, 2015
The key issue of static routing algorithms is how to construct an energy efficient routing tree that is utilized during the whole network duration in order to extend network lifetime.
Zhi Huang
doaj   +1 more source

Energy Efficient Cell Survival and Cell Merging Approaches for Auto-Configurable Wireless Sensor Networks

open access: yesJournal of Advances in Information Technology, 2012
In practice, sensor nodes (SN) are battery-powered devices and   the variant rate of depletion of power in the devices can hamper the network’s efficient operation as the node lifetimes directly affect the network lifetime of wireless ...
M R Uddin   +3 more
doaj   +1 more source

Molecular Dynamics Studies of Shape Memory Polymers: From Bead–Spring Models to Atomistic Simulations

open access: yesAdvanced Engineering Materials, EarlyView.
Coarse‐grained (left) and atomistic (right) models of the shape memory polymer ESTANE ETE 75DT3 are shown schematically. The two representations bridge molecular detail and mesoscopic description. Both models capture shape memory behavior, linking segmental mobility and conformational relaxation of anisotropic chains to macroscopic recovery, and ...
Fathollah Varnik
wiley   +1 more source

Modeling churn using customer lifetime value. [PDF]

open access: yes
The definition and modeling of customer loyalty have been central issues in customer relationship management since many years. Recent papers propose solutions to detect customers that are becoming less loyal, also called churners.
Croux, Christophe   +2 more
core  

Data aggregation in wireless sensor network for optimizing network lifetime

open access: yesDianxin kexue, 2016
Taking target tracking in wireless sensor network(WSN)as application background,data aggregation for optimizing network lifetime based on extended Kalman filter method was researched,and an algorithm which considered both tracking accuracy and node ...
Qifen DONG   +4 more
doaj   +2 more sources

Network-Lifetime Maximization of Wireless Sensor Networks

open access: yesIEEE Access, 2015
Network lifetime (NL) maximization techniques have attracted a lot of research attention owing to their importance for extending the duration of the operations in the battery-constrained wireless sensor networks (WSNs).
Halil Yetgin   +3 more
doaj   +1 more source

Nondestructive Testing of Welded Composite Metal Foams

open access: yesAdvanced Engineering Materials, EarlyView.
X‐ray computed tomography (CT) is used to evaluate welded steel–steel composite metal foam (CMF) joints of two density classes. It reports variation in postweld spatial void distribution and correlates it to weld‐induced changes, mechanical performance, and failure within welded CMF panels.
Chinmaya Prerana Inguva   +2 more
wiley   +1 more source

HAC: Hierarchical Agglomerative Clustering With Linear Programming for Wireless Sensor Networks

open access: yesIEEE Access
Wireless sensor networks are a collection of tiny sensor devices powered by energy-scarce batteries. Depending on the nature of the application, those tiny devices might be deployed in areas that make it difficult to recharge or change their battery ...
Sidi Mohamed Mohi Dine   +2 more
doaj   +1 more source

A New Real-Time and Guaranteed Lifetime Protocol in Wireless Sensor Networks

open access: yesInternational Journal of Distributed Sensor Networks, 2014
Real-time applications are time and event critical, therefore they have strict constraint on delay, packet loss, and energy consumption in many wireless sensor networks (WSNs) scenarios, which demands the network to continue QoS operations for a ...
Babar Shah, Ki-Il Kim
doaj   +1 more source

Experimental Characterization and Constitutive Modeling of the Effect of Prior Inelastic Strain on the Viscoplastic Behavior of AD730 at 700 °C

open access: yesAdvanced Engineering Materials, EarlyView.
This study shows that superalloys used in aircraft engine disks become much more prone to deformation at high temperatures if they have been strained during manufacturing. This effect increases with the level of prior strain but eventually reaches a limit.
Fabio Machado Alves da Fonseca   +9 more
wiley   +1 more source

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