Richard Black – författare

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A complete guide to optical waveguide modes

This in-depth work explains how transverse optical waveguide geometry influences field distribution and polarization properties. You will gain a thorough understanding of the fundamental physics of mode structure.

Optical Waveguide Modes covers single- and few-mode optical waveguides with an emphasis on single-core and multicore optical fibers and couplers, including a large range of geometries and anisotropies. Analysis is performed using extensions of the weak-guidance perturbation formalism together with elementary group representation theory. This definitive volume offers a detailed introduction to and classification of diverse forms of fundamental and higher-order modes and various polarization manifestations.

Coverage includes:

Electromagnetic theory for anisotropic mediaWeak guidance for longitudinally invariant fibersCircular isotropic longitudinally invariant fibersAzimuthal symmetry breakingBirefringence: linear, radial, and circularMulticore and multifiber couplers

Examines the interaction of the economic, political and social change processes within Europe which are bringing about fundamental transformations in rural areas. The authors expand on this view of rural Europe, and place its significance within the broader field of rural studies.

The Millennium Development Goals accepted by the UN in 2000 are, along with the targets set by the OECD in 1996 the subject of this expertly written book. Is development achievable in the time frames given? How useful were the goals in the first place? How far have we come in solving the aching problems of the developing world? These questions and more and asked and answered.This impressive collection featuring an array of respected contributors and a preface from Mark Malloch Brown of the UNDP, will be required reading among development economists and those interested in development studies more generally. Perhaps more importantly, the lessons learned from this book shall need to be understood and acted upon by policy makers at both national and international levels.

The Millennium Development Goals accepted by the UN in 2000 are, along with the targets set by the OECD in 1996 the subject of this expertly written book. It asks and answers questions such as:Is development achievable in the time frames given? How useful were the goals in the first place? How far have we come in solving the aching problems of the developing world? This impressive collection featuring an array of respected contributors and a preface from Mark Malloch Brown of the UNDP, will be required reading among development economists and those interested in development studies more generally. Perhaps more importantly, the lessons learned from this book shall need to be understood and acted upon by policy makers at both national and international levels.

Provides a much-needed perspective on the geopolitical, economic and social consequences of refugees, drawing out key global themes and illustrating them with empirical and comparative material. The first section (of three) deals with the background of the refugee crisis; its effects in the countries of first asylum, predominantly in the poorer countries of the ``south''; and the new challenges facing governments and migrants in the richer countries of the ``north''. Prospects for future research on refugees by geographers and social scientists as well as its rising significance for economic development and social welfare in both poor and rich nations are discussed in the final section.

Refugees, Environment and Development is concerned with the complex interrelationships between forced migration, natural resource management and 'sustainable development'. The book challenges the growing rhetoric that refugees 'cause' environmental degradation, and that environmental decline is promoting a new wave of 'environmental refugees'. Drawing on examples from Africa, Asia and Latin America, as well as detailed case studies of the Rwandan emergency of 1994-96, and lesser known refugee movements to Guinea and Senegal in West Africa, the book argues against a neo-Malthusian view of the relationship between population, environment and migration. The author explores alternative approaches to the dynamic processes of social and environmental change in refugee situations.This is an ideal text for undergraduate and postgraduate students concerned with environment, development and migration studies, as well as policy-makers and practitioners in the field.

Refugees, Environment and Development is concerned with the complex interrelationships between forced migration, natural resource management and 'sustainable development'. The book challenges the growing rhetoric that refugees 'cause' environmental degradation, and that environmental decline is promoting a new wave of 'environmental refugees'. Drawing on examples from Africa, Asia and Latin America, as well as detailed case studies of the Rwandan emergency of 1994-96, and lesser known refugee movements to Guinea and Senegal in West Africa, the book argues against a neo-Malthusian view of the relationship between population, environment and migration. The author explores alternative approaches to the dynamic processes of social and environmental change in refugee situations.This is an ideal text for undergraduate and postgraduate students concerned with environment, development and migration studies, as well as policy-makers and practitioners in the field.

Examines the interaction of the economic, political and social change processes within Europe which are bringing about fundamental transformations in rural areas. The authors expand on this view of rural Europe, and place its significance within the broader field of rural studies.

At the start of the 1990s, there was great optimism that the end of the Cold War might also mean the end of the "refugee cycle" - both a breaking of the cycle of violence, persecution and flight, and the completion of the cycle for those able to return to their homes. The 1990s, it was hoped, would become the "decade of repatriation." However, although over nine million refugees were repatriated worldwide between 1991 and 1995, there are reasons to believe that it will not necessarily be a durable solution for refugees. It certainly has become clear that "the end of the refugee cycle" has been much more complex, and ultimately more elusive, than expected. The changing constructions and realities of refugee repatriation provide the backdrop for this book which presents new empirical research on examples of refugee repatriation and reconstruction. Apart from providing up-to-date material, it also fills a more fundamental gap in the literature which has tended to be based on pedagogical reasoning rather than actual field research. Adopting a global perspective, this volume draws together conclusions from highly varied experiences of refugee repatriation and defines repatriation and reconstruction as part of a wider and interrelated refugee cycle of displacement, exile and return. The contributions come from authors with a wealth of relevant practical and academic experience, spanning the continents of Africa, Asia, Central America, and Europe.

At the start of the 1990s, there was great optimism that the end of the Cold War might also mean the end of the "refugee cycle" - both a breaking of the cycle of violence, persecution and flight, and the completion of the cycle for those able to return to their homes. The 1990s, it was hoped, would become the "decade of repatriation." However, although over nine million refugees were repatriated worldwide between 1991 and 1995, there are reasons to believe that it will not necessarily be a durable solution for refugees. It certainly has become clear that "the end of the refugee cycle" has been much more complex, and ultimately more elusive, than expected. The changing constructions and realities of refugee repatriation provide the backdrop for this book which presents new empirical research on examples of refugee repatriation and reconstruction. Apart from providing up-to-date material, it also fills a more fundamental gap in the literature which has tended to be based on pedagogical reasoning rather than actual field research. Adopting a global perspective, this volume draws together conclusions from highly varied experiences of refugee repatriation and defines repatriation and reconstruction as part of a wider and interrelated refugee cycle of displacement, exile and return. The contributions come from authors with a wealth of relevant practical and academic experience, spanning the continents of Africa, Asia, Central America, and Europe.

Coal, oil and gas provide four-fifths of the energy that powers our modern world. But continuing to burn them will mean wrecking the only planet we have. Is there a way out?In The Future of Energy, journalist and analyst Richard Black argues that there is, and that the transition to a clean energy world is already underway. He shows that with just five key technologies we can replace the burning of fossil fuels almost entirely, as quickly as society decides. Doing so will do much more than halt climate change. The transition will bring cheaper energy, cleaner air and more jobs. It will remove some of the factors behind oppression, injustice and conflict. And it is supported by an overwhelming majority of the world’s population. This may not be the story of energy that you hear most about from politicians, business leaders and journalists, but it is the one that matters.