Selecting appropriate inputs for systems described by complex networks is an important but difficult problem that largely remains open in the field of control networks. Recent work has proposed two methods energy efficient input selection; a gradient-based heuristic and greedy approximation algorithm. We propose here alternative method selection based on analytic solution controllability Gramia...

Applications of data envelopment analysis often incorporate inputs and outputs stated as proportions or percentages, which are typically used to represent socio-economic quality characteristics the production process. As is well known, use such ratio measures inconsistent with assumption convexity required by conventional variable constant returns-to-scale (VRS CRS) technologies, additional sca...

Many models of economic growth exclude materials, energy and other intermediate inputs from the production function. Growing environmental pressures and resource prices suggest that this may be increasingly inappropriate. This paper explores the relationship between intermediate input intensity, productivity and national accounts using a panel dataset of manufacturing subsectors in the USA over...

In this issue of Neuron, Newman et al. (2017) image calcium events at single synapses of unanesthetized Drosophila larvae. Synaptic plasticity and homeostatic regulation of synapses is established to be input specific. Furthermore, plasticity forms involve selective recruitment of previously active or silent synapses.