The ablation and oxidation of ZrB₂-based ultra high temperature ceramic (UHTC) composites containing 10%, 15% and 30% v/v SiC were tested under different heat fluxes in a high frequency plasma wind tunnel. Performance was significantly affected by the surface temperature, which was strongly dependent on the composition. Composites containing 10% SiC showed the highest surface temperature (>2300...

Vienna University of Technology, Institute of Materials Science and Technology, Karlsplatz 13/308, 1040 Vienna, Austria b The Slovak Academy of Sciences, Institute of Materials and Machine Mechanics, Račianska 75, 83102 Bratislava, Slovak Republic Branch Lab Dresden of the Fraunhofer Institute for Manufacturing and Advanced Materials, Winterbergstrabe 28, 01277 Dresden, Germany Austrian Researc...

a r t i c l e i n f o Marketing as a discipline in general, and industrial marketing in particular, has drawn upon a number of different theoretical perspectives from domains as diverse as organisational theory, systems analysis, economics, psychology, sociology and anthropology to further our understanding. However, to build this understanding and increase the relevance of marketing research, ...

A standard assumption in the literature of learning theory is the samples which are drawn independently from an identical distribution with a uniform bounded output. This excludes the common case with Gaussian distribution. In this paper we extend these assumptions to a general case. To be precise, samples are drawn from a sequence of unbounded and non-identical probability distributions. By dr...

of closed system, management control remains to be the dominant guiding concept to management. The merits of closed loop have been the sources of most of the management literature and culture for many decades. It is a useful exercise to investigate and poke into the dynamics of the control loop phenomenon and draws some lessons to use for refining the practice of management. This paper examines...