Exact(1)
We design approximation algorithms for min set cover achieving ratios that cannot be achieved in polynomial time (unless problems in NP could be solved by slightly super-polynomial algorithms) with worst-case complexity much lower (though super-polynomial) than those of an exact computation.
Similar(59)
During the vegetative phase rapid ground cover achieved with early vigour (Poorter and De Jong 1999; Shipley 2006; Dingkuhn et al. 1999) can reduce soil evaporation, accelerate root access to soil water and nitrogen, and reduce competition with weeds (Zhao et al. 2006).
Therefore a broad discharge range can be covered achieving high efficiencies since the single machines are mostly operated at their nominal point (Oberle et al. 2009).
The tests were performed using an incandescent lamp panel disposed on a 1 m2 surface, totalizing a thermal power of 3600 W. The results show a good efficiency of the TIM covers, achieving overall heat loss coefficient values between 0.54 and 1.90 W m−2 K−1.
American and European Union sanctions on Iran are aimed largely at pressing the country to halt its uranium enrichment activities, which the Iranians say are peaceful but which Western governments suspect are a cover for achieving the ability to make nuclear weapons.
(4) Fallow may be the best cover for achieving adequate hydrological sustainability of the soil.
Saner voices know that much of this "immediate debt reduction" panic in conservative circles is simply cover for achieving draconian cuts in basic welfare programs -- cuts that then place the full burden of any recovery strategy onto the shoulders of those least able to bear it: namely the poor.
Black rock and roll musicians of the 1950s had seen many of their original hit tunes covered by white musicians, with these covers usually achieving more fame and sales success than the originals.
In claiming to be about forgiveness the cover therefore achieves the opposite, spreading guilt by association.
Successful cover was achieved in all cases, with the need of additional split thickness skin grafts in 33%% of patients.
At the outset, the thin layer of polydopamine (PDA) was coated on Ti3C2Tx and served as protective cover to achieve the structural stability and integrity of Ti3C2Tx.
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com