The utilization of acknowledged sets of benchmark-problem instances is essential for the correct comparison and analysis of heuristics.
Unlike whitewater kayaking, which requires complete focus -- a mastery of the Eskimo roll, for instance, is essential -- rafting confers the benefit of a certain degree of languor in calmer waters.
unc-18, for instance, is essential for synaptic transmission [ 13], and unc-18 mutants are almost totally paralyzed, feed slowly, and grow and reproduce much more slowly than wild type [ 14].
For instance, fires are essential to the ecosystem's regeneration and to the creation of different habitats for different species, and so the park managers let them burn -- unless they threaten people and structures.
Some of the Xanthomonas spp. effector proteins, for instance PthA/AvrBs3, are essential to elicit citrus canker symptoms and if expressed by itself inside host cells, pthA is sufficient to cause symptoms of citrus canker disease [ 11- 15].
On the latest high-density SNP arrays, for instance, segmentation strategies are essential for estimating the CN for individual genes [ 8].
For instance, MyoD and myf5 are essential regulators of muscle cell proliferation determination, whereas myogenin and myf4 act as regulators of muscle cell differentiation (Rudnicki et al. 1993; Steinbacher et al. 2007; Johnston et al. 2008).
This is important in a prebiotic context since, for instance, linear fatty acids are essential for the formation of the bilayer membranes that are present in cell walls (Ferris, 1992).
Such long coherence lengths are essential, for instance, to record holograms of three-dimensional objects.
Behavioral therapy and coping strategies - for both partners - are essential; for instance, Ms. Orlov would banish long to-do lists in favor of recipe cards that each contain a single task, sorted in order of priority.
