The first observations of dislocations by TEM were published in 1956. Since then the technique has been developed into an indispensable tool for the materials scientist, not only for the characterization of the extended defect structure of materials, but also for the elucidation of the mechanisms controlling their properties. To mark the 50th anniversary of the original work, this Special Issue consists of reprints of the three original papers and some 22 current state-of-the-art articles, which provide a snapshot of the (...) tremendous power and versatility of the technique at the present time. It is also hoped that this collection of papers from different areas of application and including different techniques might stimulate some cross-fertilization. In this introduction, we comment briefly on the context in which the original work was performed, trace some of the important developments that have taken place in the intervening period and identify some of the outstanding problems. (shrink)

This editorial to the special issue addresses the often overlooked question of the ethical nature of social enterprises. The emerging social entrepreneurship literature has previously been dominated by enthusiasts who fail to critique the social enterprise, focusing instead on its distinction from economic entrepreneurship and potential in solving social problems. In this respect, we have found through the work presented herein that the relation between social entrepreneurship and ethics needs to be problematized. Further, we find that a range of conceptual (...) lenses and methodological approaches is valuable as the social entrepreneurship field matures. (shrink)

The first book of its kind, German Aesthetics assembles a who's who of German studies to explore 200 years of intellectual history, spanning literature, philosophy, politics, and culture.