Most Popular Books by Ian Roberts

These Student Books, Tutor''s Resource File and photocopiable option unit packs provide thorough and up-to-date material for the AVCE Leisure and Recreation and Travel and Tourism awards.

A fascinating and comprehensive exploration of GermanyPerfect for everyone from general readers to students to recreational or business travelers, the Teach Yourself World Cultures series explores language, history, art, politics, economics, cuisine, and much more. Each book in the series lists useful addresses, websites, and points of interest. Mixing historical information with travel tips, Teach Yourself World Cultures books are both educational and entertaining.Teach Yourself World Cultures: Germany provides: A balanced and comprehensive overview of the nation--from geography to political history to the workplace environment of today Valuable information on the people and their customs Practical vocabulary and language tips for the traveler Recipes for common dishes of the region

Ideal for classroom or independent study, this revision workbook is the smart choice for studying on the foundation tier for Edexcel GCSE science.

Droving has been hugely important in shaping farming practice across Northumberland for 1,000 years or more. The necessity of transporting sheep and cattle has changed the landscape, developed the roads and buildings, and at one time, animals would be herded from as far a field as Scotland and Ireland. Today the scene is very different but the legacy of the drovers can still be seen and enjoyed all over the region. Local archaeologists Ian Roberts, Alan Rushworth, and Richard Calrton have been determined to preserve this history on behalf of the Northumberland National Park Authority. Following the development of droving in Northumberland from prehistoric times, through Middle Ages, the eighteenth century and right up to date, they offer the definitive history of this significant activity.

Radical empathy manifests itself when you recognize that you do not have to go to happy hour or drink coffee with someone in order to understand their point of view and work with them. In fact, some of the most productive leaders focus less on social goals and understand that there will be variances in lived experiences but we must still be willing to work with people and help to leverage their unique perspectives in order to achieve better outcomes in schools.

Channel power and rate optimization objectives are examined in nonlinear long-haul optical communication networks. Problems of maximizing the minimum channel margin and maximizing fiber capacity are found to have convex forms. The Kerr nonlinear inter- and intra-channel nonlinear interference is initially modelled via the Gaussian noise nonlinearity model. Valuable performance benefits are obtained in inhomogeneous scenarios including mesh networks. The inhomogeneity introduced by the additional nonlinear impairment of stimulated Raman scattering makes the optimization objective non-convex, but also provides inherent inhomogeneity that supports performance benefits from power optimization. The discrete-rate optimization objective is formulated for maximizing the real-world capacity of optical communication systems with discrete code rates. Efficient heuristic methods are proposed that make use of a sequence of calls to solve the minimum-margin channel power optimization problem. Lastly, the channel power optimization problem is generalized with a model that applies beyond the dispersion-uncompensated domain of the Gaussian noise model. A first-order perturbation-based approach is used for the nonlinear interference modelling.