The nature of disruptive and sustaining technologies is sufficiently different to require different activities for the commercialization of these technology categories. Few theorists have developed conceptual schemes about the different methods of commercializing these technologies. The authors take the first steps in investigating these differences by contrasting firms that commercialize disruptive technologies with those that commercialize sustaining technologies. They reveal major differences and analyze these in terms of four major commercialization components: product realization, revenue generation, research support, and market potential. Several hypotheses regarding size of the firm, its financial risk profile, and its R&D strategy are utilized.

There have been no new literature papers dealing with jet fuel deicing additive replacements for the past 20 years. The current fuel system icing inhibitor additives, used by both the military and commercial aviation, are ethylene glycol monomethyl ether and diethylene glycol monomethyl ether. These deicing compounds are toxic at the concentrations that are required for effective deicing. This observation points to an immediate need for nontoxic, inexpensive, and biodegradable deicing compounds. The synthesis of polar sugar derivatives represents a viable alternative to glycol-based additives. The alternative deicing compounds reported in this paper are inexpensive and fuel stable and exhibit icing inhibitor characteristics similar to those of the presently used commercial materials.

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The waveform and velocity of second-sound waves in superfluid helium have been studied experimentally using superconducting, thin-film probes. The second-sound waves were generated with electrical pulses through a resistive film. Variations in pulse power, pulse duration, and bath temperature were examined. As predicted theoretically, the formation of a shock was observed at the leading or trailing edge of the waves depending on bath temperature. Breakdown of the theoretical model was observed for large pulse powers. Accurate data for the acoustic second-sound speed were derived from the measurements of shock-wave velocities and are compared with previous results.