Cathodic arcs are among the longest studied yet least understood objects in science. Plasma-generating, tiny spots appear on the cathode; they are highly dynamic and hard to control. With an approach emphasizing the fractal character of cathode spots, strongly fluctuating plasma properties are described such as the presence of multiply charged ions that move with supersonic velocity. Richly illustrated, the book also deals with practical issues, such as arc source construction, macroparticle removal, and the synthesis of dense, well adherent coatings. The book spans a bridge from plasma physics to coatings technology based on energetic condensation, appealing to scientists, practitioners and graduate students alike.

Cathodic arcs are among the longest studied yet least understood objects in science. Plasma-generating, tiny spots appear on the cathode; they are highly dynamic and hard to control. With an approach emphasizing the fractal character of cathode spots, strongly fluctuating plasma properties are described such as the presence of multiply charged ions that move with supersonic velocity. Richly illustrated, the book also deals with practical issues, such as arc source construction, macroparticle removal, and the synthesis of dense, well adherent coatings. The book spans a bridge from plasma physics to coatings technology based on energetic condensation, appealing to scientists, practitioners and graduate students alike.

This scarce antiquarian book is a selection from Kessinger Publishing's Legacy Reprint Series. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment to protecting, preserving, and promoting the world's literature. Kessinger Publishing is the place to find hundreds of thousands of rare and hard-to-find books with something of interest for everyone

In the aftermath of an armed conflict in Africa, the international community both produces and demands from local partners a variety of blueprints on how to reconstruct state and society. The aim is to re-formalize the state after what is viewed as a brief or extended period of fragmentation and informalization caused by armed conflict. In reality, both African economies and politics are very much informal in character, with informal actors (including so-called "Big Men") often using their positions in the formal structure as a means to reach informal goals. Through a variety of in-depth case studies - from DRC to Somali to Liberia among others - this book shows how important informal political and economic networks are in many of the continent's conflict areas. More than this, it demonstrated that without a proper understanding of their impacts in areas such as borderlands and in "narco-states" such as Guinne-Bissau, attempts to "formalize" African states, particularly those emerging from wars, will be in vain.

In the aftermath of an armed conflict in Africa, the international community both produces and demands from local partners a variety of blueprints on how to reconstruct state and society. The aim is to re-formalize the state after what is viewed as a brief or extended period of fragmentation and informalization caused by armed conflict. In reality, both African economies and politics are very much informal in character, with informal actors (including so-called "Big Men") often using their positions in the formal structure as a means to reach informal goals. Through a variety of in-depth case studies - from DRC to Somali to Liberia among others - this book shows how important informal political and economic networks are in many of the continent's conflict areas. More than this, it demonstrated that without a proper understanding of their impacts in areas such as borderlands and in "narco-states" such as Guinne-Bissau, attempts to "formalize" African states, particularly those emerging from wars, will be in vain.

One of the most influential child psychiatrists of the twentieth century, Donald J. Cohen (1940-2001) made groundbreaking contributions to the study of autism and developmental disabilities, Tourette's syndrome, developmental psychopathology, child psychoanalysis, and children's adaptation to trauma. As director of the Yale Child Study Center from 1983 to 2001, he fostered international collaborations and innovative approaches to the study of children's mental health. This book contains a selection of some of his most enduring and influential writings. Showcasing Dr. Cohen's distinctive approach, these essays - one of which is published here for the first time - address a wide range of topics including autobiographical writings; childhood psychiatric disorders; the role of play fantasy, aggression, and violence in childhood; and research ethics and mentorship.