Conway – författare

In the planning of any space mission, whether manned or unmanned, one of the most important problems to solve is the orbital mechanics of the spaceflight-how to get the spacecraft from here to there. Sometimes the problem is a relatively simple one: for instance, determining the amount of thrust for how much time to get the space shuttle into a low-earth stable orbit has been more or less perfected. But working out the equations for launching the Voyager probe to visit four major planets, their satellites and rings, without crashing into any of them or flying too far from them, was a formidable problem. As more spaceflights are planned and designed, students and engineers will need improved training in orbital mechanics. This classroom-tested textbook takes its title from an elective course at the University of Illinois at Urbana-Champaign which has been taught to senior undergraduates and first-year graduate students for the past 22 years. The subject of orbital mechanics is developed starting from the first principles of Newton's laws of motion and the law of gravitation.However, unlike other books, the authors also derive the other important results from the first principles, including the fundamental Kepler's equation, the n-body and two-body equations of motion and Kepler's laws of planetary motion, orbital elements, Lambert's time-of-flight equation, the rocket equation and staging, impulsive orbit transfer and rendezvous, interplanetary spacecraft trajectories, the hyperbolic gravity-assist relations, the Hill-Clohessy-Wiltshire equations of relative motion, the Lagrange perturbation equations, and the Gauss and Laplace methods of orbit determination. The subjects of orbit transfer and spacecraft trajectories receive special attention because they are a favorite research area of the authors and their students.

While qualitative research has become increasingly popular in music education over the last decade, there is no source that explains the terms, approaches and issues associated with this method. In The Oxford Handbook of Qualitative Research in American Music Education, editor Colleen Conway and the contributing music educators will provide that clarification, as well as models of qualitative studies within various music education disciplines. The handbook outlines the history of qualitative research in music education and explores the contemporary use of qualitative approaches in examining issues related to music teaching and learning. It includes 32 chapters and is divided into five parts. Part I defines qualitative research and examines historical, philosophical and ethical issues associated with its use in music education. Part II discusses ways of approaching qualitative research including: case study, ethnography, phenomenology, narrative inquiry, practitioner inquiry, and mixed methods. Ways of collecting and analyzing data are examined in the third part of the text (observations, interviews, document analysis, music as data and technology). Part IV examines various music teaching and learning contexts that have been studied using qualitative approaches including: early childhood, general, instrumental-band, instrumental-string, choral, preservice and inservice teacher education, adult and community settings, student with exceptionalities, underserved populations, and world music. The final section of the book tackles permission to conduct research, teacher qualitative research, publishing qualitative research and direction for the future. An ambitious and much-needed volume, this handbook will stand as a key resource for drawing meaning from the experiences of students and teachers in music classrooms and communities.

CUA Press is proud to announce the CUA Studies in Canon Law. In conjunction with the School of Canon Law of the Catholic University of America, we are making available, both digitally and in print, more than 400 canon law dissertations from the 1920s to 1960s, many of which have long been unavailable.These volumes are rich in historical content, yet remain relevant to canon lawyers today. Topics covered include such issues as abortion, excommunication, and infertility. Several studies are devoted to marriage and the annulment process; the acquiring and disposal of church property, including the union of parishes; the role and function of priests, vicars general, bishops, and cardinals; and juridical procedures within the church.For those who seek to understand current ecclesial practices in light of established canon law, these books will be an invaluable resource.