A survey of topologies and performance measures for large-scale networks

2004 ◽  
Vol 6 (4) ◽  
pp. 18-31 ◽  
Author(s):  
Jules R. Degila ◽  
Brunilde Sanso
Keyword(s):  
Performance Measures ◽  
Large Scale ◽  
And Performance ◽  
Large Scale Networks

scholarly journals Energy and performance costs evaluation for BLE mesh links

2018 ◽  
Author(s):  
Henrique Carvalho Silva ◽  
Cíntia Borges Margi
Keyword(s):  
Energy Consumption ◽  
Large Scale ◽  
Mesh Networks ◽  
Lower Boundary ◽  
Low Energy ◽  
Trade Offs ◽  
Main Challenge ◽  
And Performance ◽  
Large Scale Networks ◽  
The Internet Of Things

Bluetooth Low Energy (BLE for short) is among the favorites to become a de facto standard in the context of the Internet of Things (IoT). However, its main challenge is the lack of standards for efficient mesh networking. Furthermore, the literature lacks works analyzing energy consumption trade-offs for BLE mesh networks. We address this issue by experimentally evaluating three minimal topologies for linking separate BLE star networks. We aim to determine a lower boundary in terms of energy and performance costs using the metrics of energy consumption, delivery rate, and goodput. We perform our experiments using a testbed comprised of TI CC1350 nodes running Contiki OS. Our results enable us to estimate similar costs for large scale networks.

Cognitive and affective benefits of colouring: Two randomized controlled crossover studies

2018 ◽  
Author(s):  
Nicola Jane Holt ◽  
Leah Furbert ◽  
Emily Sweetingham
Keyword(s):  
Selective Attention ◽  
Performance Measures ◽  
Divergent Thinking ◽  
Attention Task ◽  
Creative Cognition ◽  
Randomized Controlled ◽  
Mindful Attention ◽  
Crossover Studies ◽  
And Performance ◽  
Implicit Mood

The current research sought to replicate and extend work suggesting that coloring can reduce anxiety, asking whether coloring can improve cognitive performance. In two experiments undergraduates (N = 47; N = 52) colored and participated in a control condition. Subjective and performance measures of mood and mindfulness were included: an implicit mood test (Experiment 1) and a selective attention task (Experiment 2) along with a divergent thinking test. In both experiments coloring significantly reduced anxiety and increased mindfulness compared with control and baseline scores. Following coloring participants scored significantly lower on implicit fear, than the control condition, and significantly higher on selective attention and original ideation. Coloring may not only reduce anxiety, but also improve mindful attention and creative cognition.

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