Improving the performance of ARQ protocols over AWGN channels using an optimized energy allocation

2010 ◽  
Author(s):  
Bessem Kaddour ◽  
Mohamed Siala ◽  
Hatem Boujemaa
Keyword(s):  
Energy Allocation

Smart Greedy Distributed Energy Allocation: a Random Games Approach

2021 ◽  
pp. 1-1
Author(s):  
Ilai Bistritz ◽  
Andrew Ward ◽  
Zhengyuan Zhou ◽  
Nicholas Bambos
Keyword(s):  
Energy Allocation ◽  
Distributed Energy ◽  
Random Games

scholarly journals On Energy Allocation and Data Scheduling in Backscatter Networks with Multi-antenna Readers

2021 ◽  
pp. 1-1
Author(s):  
Mohammad Movahednasab ◽  
Mohammad Reza Pakravan ◽  
Behrooz Makki ◽  
Tommy Svensson
Keyword(s):  
Energy Allocation ◽  
Data Scheduling

Lipid Dynamics during Reproduction in Two Livebearing Fishes, Gambusia holbrooki and Poecilia latipinna

1993 ◽  
Vol 50 (10) ◽  
pp. 2185-2191 ◽  
Author(s):  
Gary K. Meffe ◽  
Franklin F. Snelson Jr.
Keyword(s):  
Lipid Content ◽  
Energy Use ◽  
Late Summer ◽  
Energy Allocation ◽  
Metabolic Efficiency ◽  
Gambusia Holbrooki ◽  
Poecilia Latipinna ◽  
Lipid Dynamics ◽  
Sailfin Molly ◽  
Eastern Mosquitofish

In animals, strategies of energy allocation among growth, maintenance and reproduction can be significantly altered by lipid storage. Poeciliid (livebearing) fishes store energy in late summer and fall for overwintering and first reproduction in spring, but details of energy use in reproduction are lacking. We conducted a laboratory experiment on the eastern mosquitofish (Gambusia holbrooki) and the sailfin molly (Poecilia latipinna) to document changes in lipid content in both the ovary and soma during development of a brood. In females of both species, ovarian lipid content was highest early in embryogeny and then declined; adult somatic lipids increased (were replenished) during embryonic development in mosquitofish, but declined in mollies. Larger clutches sequestered a larger share of body lipids in both species, possibly indicating energetic limits to reproduction. Finally, growth rate was positively correlated with somatic lipid content in both species, indicating among-individual differences in metabolic efficiency or feeding efficiency rather than a trade-off between growth and energy storage.

scholarly journals The energy allocation trade-offs underlying life history traits in hypometabolic strepsirhines and other primates

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Bruno Simmen ◽  
Luca Morino ◽  
Stéphane Blanc ◽  
Cécile Garcia
Keyword(s):  
Life History ◽  
Energy Expenditure ◽  
Body Mass ◽  
Life History Traits ◽  
Brain Size ◽  
Energy Allocation ◽  
Interbirth Interval ◽  
Energy Investment ◽  
Litter Mass ◽  
Trade Offs

AbstractLife history, brain size and energy expenditure scale with body mass in mammals but there is little conclusive evidence for a correlated evolution between life history and energy expenditure (either basal/resting or daily) independent of body mass. We addressed this question by examining the relationship between primate free-living daily energy expenditure (DEE) measured by doubly labeled water method (n = 18 species), life history variables (maximum lifespan, gestation and lactation duration, interbirth interval, litter mass, age at first reproduction), resting metabolic rate (RMR) and brain size. We also analyzed whether the hypometabolic primates of Madagascar (lemurs) make distinct energy allocation tradeoffs compared to other primates (monkeys and apes) with different life history traits and ecological constraints. None of the life-history traits correlated with DEE after controlling for body mass and phylogeny. In contrast, a regression model showed that DEE increased with increasing RMR and decreasing reproductive output (i.e., litter mass/interbirth interval) independent of body mass. Despite their low RMR and smaller brains, lemurs had an average DEE remarkably similar to that of haplorhines. The data suggest that lemurs have evolved energy strategies that maximize energy investment to survive in the unusually harsh and unpredictable environments of Madagascar at the expense of reproduction.

Sign in / Sign up

Export Citation Format

Share Document