For time series models a key question is whether the process has a unit root. Most of our time series are much too short for unit root tests to be effective (Blough, 1992). Nonetheless, we found that our time series forecasts are consistent with the hypothesis of a unit root and that ...
To get a grip on why this question matters so much, consider what, for many, is a big surprise. It’s possible that deforestation, farming, grazing, and other people-caused soil disturbance during prehistoric times put more carbon into the atmosphere than has fossil fuel since 1850. And eve...
Biogas adoption in Southeast Asia today is small with a capacity of around one gigawatt. Biogas is typically produced by breaking down organic waste through a process called anaerobic digestion. In Southeast Asia, biogas is then usually used for electricity generation, for example, by selling it ...
Still LED back lighting really seems to be smacking LCDs now on power and the price difference is becoming minimal and could easily cover itself in short order. Also LED makes for much slimmer, lighter panels (and woblier too). Also on ATX power supplies, most PCs use <80% efficient PSU...