Carbon nanotubes are exceptionally interesting from a fundamental research point of view. Many concepts of one-dimensional physics have been verified experimentally such as electron and phonon confinement or the one-dimensional singularities in the density of states; other 1D signatures are still under debate, such as Luttinger-liquid behavior. Carbon nanotubes are chemically stable, mechanically very strong, and conduct electricity. For this reason, they open up new perspectives for various applications, such as nano-transistors in circuits, field-emission displays, artificial muscles, or added reinforcements in alloys. This text is an introduction to the physical concepts needed for investigating carbon nanotubes and other one-dimensional solid-state systems. Written for a wide scientific readership, each chapter consists of an instructive approach to the topic and sustainable ideas for solutions. The former is generally comprehensible for physicists and chemists, while the latter enable the reader to work towards the state of the art in that area. The book gives for the first time a combined theoretical and experimental description of topics like luminescence of carbon nanotubes, Raman scattering, or transport measurements. The theoretical concepts discussed range from the tight-binding approximation, which can be followed by pencil and paper, to first-principles simulations. We emphasize a comprehensive theoretical and experimental understanding of carbon nanotubes including - general concepts for one-dimensional systems - an introduction to the symmetry of nanotubes - textbook models of nanotubes as narrow cylinders - a combination of ab-initio calculations and experiments - luminescence excitation spectroscopy linked to Raman spectroscopy - an introduction to the 1D-transport properties of nanotubes - effects of bundling on the electronic and vibrational properties and - resonance Raman scattering in nanotubes.
This book explains Europol’s online sharing platforms efforts in three major cybercrime areas: ransomware, money laundering with cryptocurrencies, and online child sexual exploitation that Europol has already pushed private and public actors to cooperate. Since the global financial crisis, online sharing economy platforms have made a significant impact on use of under-utilized resources. People who have a car (Uber) or a spare room (Airbnb) began to share their under-used assets with others for extra income. The success achieved by these online platforms that enable efficient use of limited resources raised a new discussion on whether a similar governance model can be implemented by public administrations where public resources are insufficient. Cybercrime is one of these fields where most law enforcement agencies have not got enough resources to tackle these crimes. They need the human and technical resources of the private sector for a safer society. This book, for the first time, seeks the answers to this question. It examines the feasibility of online sharing economy platforms to enhance public-private partnerships to tackle cybercrime. The European Union Policing Agency, Europol, is the first police organization to adopt a similar model to interact with policing agencies and private industry. Drawing on extensive research, the book offers crucial insights for policymakers, researchers, and the public interested in new trends in sharing economy, innovative governance models, public-private partnerships, and cybercrime investigations.
Diploma Thesis from the year 2007 in the subject Business economics - Business Management, Corporate Governance, grade: 2,0, University of Paderborn, language: English, abstract: Dispersing operations in foreign countries is not a development in only recent years and we can face it almost daily in the newspapers and on TV. Not only by the takeover waves among big multinational companies in the late nineties (for instance the lastly loosed merger of Daimler and Chrysler) but also by the riots in the run-up to the 33rd G8 Summit 2007 in Germany the issue of globalisation was spotlighted to the general public. Based on the economic research this diploma thesis addresses the topic of dispersed operations and should give advice and instructions how to reach a successful access to markets in foreign countries in practice. Since the international orientation of enterprises cannot be generalised and is different (among other things) from branch to branch the establishment of dispersed operations is examined for the example of an automotive supplier starting business activities in Mexico. The automotive supply industry seams to be very applicable for such an analysis as the traditionally very internationally oriented automotive manufacturers, i.e. the customers of the suppliers, were notably influenced by the consolidation processes in the last years and decades. Considering this the question needs to be posed if this alteration of business conditions has impacts on the suppliers as well. The United Mexican States as one of the biggest economies in Latin America are a quite popular location especially among the North American investors for a long time. Mexico connects (not only physically) the huge markets of Canada and the United States of America with the BRIC state of Brazil which is considered by many experts to be the growth market of South America in the next years. Since all well-known vehicle manufacturers run representations on the Mexican market it suggests examining the international orientation of automotive suppliers in respect of especially this market.
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