David A. Hill

Det er en iskold vinteraften i Budapest, og John Taylor er på vej hjem fra arbejde, da en mand løber ind i ham og vælter ham omkuld. Den fremmede vender sig for at sige undskyld, og John forbløffes over at se, at den fremmede ligner ham på en prik. Den mystiske dobbeltgænger skynder sig væk, men efterlader ingen spor i sneen. I løbet af det kommende år går det op for John, at dette møde ikke var tilfældigt, og at hans dobbeltgænger har en vigtig besked at give ham.

A thorough and rigorous analysis of electromagnetic fields in cavities This book offers a comprehensive analysis of electromagnetic fields in cavities of general shapes and properties. Part One covers classical deterministic methods to conclude resonant frequencies, modal fields, and cavity losses; quality factor; mode bandwidth; and the excitation of cavity fields from arbitrary current distributions for metal-wall cavities of simple shape. Part Two covers modern statistical methods to analyze electrically large cavities of complex shapes and properties. Electromagnetic Fields in Cavities combines rigorous solutions to Maxwell's equations with conservation of energy to solve for the statistics of many quantities of interest: penetration into cavities (and shielding effectiveness), field strengths far from and close to cavity walls, and power received by antennas within cavities. It includes all modes and shows you how to utilize fairly simple statistical formulae to apply to your particular problem, whether it's interference calculations, electromagnetic compatibility testing in reverberation chambers, measurement of shielding materials using multiple cavities, or efficiency of test antennas. Electromagnetic Fields in Cavities is a valuable resource for researchers, engineers, professors, and graduate students in electrical engineering.

Academic Connections is a four-level integrated skills course designed for students preparing for academic study as well as for standardized tests such as the TOEFL (R)test. A systematic, step-by-step approach helps students develop and sharpen their language, academic, and test-taking abilities.Academic Connections was developed with the Educational Testing Service (ETS) and is based on extensive research into the actual language demands of higher education.Academic Connections is:Integrated. Academic Connections integrates all four language skills and teaches students how to integrate skills and content in real-world academic contexts. Academic. Explicit, step-by-step academic skill development leads to student mastery. With careful instruction and engaging practice tasks, students learn how to organize information, make connections, and think critically. Authentic. High-interest and intellectually stimulating authentic material familiarizes students with academic content. Authentic tasks include listening to lectures, note-taking, participating in debates, preparing oral and written reports, and writing essays. Assessment-Based. Academic Connections provides a variety of assessments and practice opportunities based upon individual needs.The Audio CD is available separately. Online Component MyAcademicConnectionsLabMyAcademicConnectionsLab, an integral part of the Academic Connections series, is an easy-to-use online program for students and teachers that saves time and improves results.Students receive personalized instruction and practice. Reading and listening selections and test preparation are all in one place available anywhere, anytime. Teachers can take advantage of content and class management resources including online assessments, a flexible gradebook, and tools for monitoring student progress.

Cambridge English Readers is an exciting new series of original fiction, specially written for learners of English. Graded into six levels - from elementary to advanced - the stories in this series provide easy and enjoyable reading on a wide range of contemporary topics and themes. One icy winter’s evening in Budapest, a man runs straight into John Taylor as he walks home through the narrow streets. John falls over into the snow and looks up at the man’s face. ‘I felt very afraid. Because what I saw was me. My face looking down at me. My mouth saying sorry.’ Who is the man, and how will John’s life change?

In this book there are entire chapters devoted to the most widely used bird counting techniques, and attempts to amalgamate other counting methodologies into major groups were made. Examples of the use of methods are provided wherever possible and the relative value of various approaches for answering specific questions is also addressed.

Cambridge English Readers is an exciting new series of original fiction, specially written for learners of English. Graded into six levels - from elementary to advanced - the stories in this series provide easy and enjoyable reading on a wide range of contemporary topics and themes. Paul Morris's happy life in Italy changes when his wife dies suddenly. He develops a relationship with Sandra, a friend at work. But all is not as it seems and Paul finds himself involved in a world of international crime and an exciting car chase across Europe. The cassette(s) contain a recording of the full text of the book.