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1. |
Record Nr. |
UNISA990000792970203316 |
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Autore |
MOLLAT DU JOURDIN, Michel |
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Titolo |
I poveri nel Medioevo / Michel Mollat ; introduzione di Ovidio Capitani |
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Pubbl/distr/stampa |
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Descrizione fisica |
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Collana |
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Biblioteca universale Laterza ; 84 |
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Disciplina |
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Soggetti |
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Pauperismo - Europa - Sec. 5.-16 |
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Collocazione |
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X.1.B. 68(VARIE COLL. 552/84) |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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2. |
Record Nr. |
UNINA9910466088603321 |
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Autore |
Kaufman Robert Gordon |
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Titolo |
Dangerous doctrine : how Obama's grand strategy weakened America / / Robert G. Kaufman |
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Pubbl/distr/stampa |
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Lexington, Kentucky : , : University Press of Kentucky, , [2016] |
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©2016 |
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ISBN |
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0-8131-6774-4 |
0-8131-6721-3 |
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Descrizione fisica |
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1 online resource (305 p.) |
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Disciplina |
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Soggetti |
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Electronic books. |
United States Foreign relations 2009- |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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Introduction -- The main tenets of the Obama Doctrine -- The Obama |
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Doctrine and international relations theory -- The Obama Doctrine and rival traditions of American diplomacy -- The Obama Doctrine's reset with Russia and Europe -- The Obama Doctrine meets the Middle East and Afghanistan -- The Obama Doctrine's Asian pivot -- Conclusion. |
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Sommario/riassunto |
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Political scientist Robert G. Kaufman argues that Barack Obama has articulated a clear, consistent national security policy and has pursued it with remarkable fidelity. Yet Kaufman contends that President Obama has imprudently abandoned the muscular internationalism that has marked US foreign policy since the end of World War II. |
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3. |
Record Nr. |
UNINA9910467321603321 |
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Autore |
Roa Javier (Javier Roa Vicens) |
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Titolo |
Regularization in orbital mechanics : theory and practice / / Javier Roa |
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Pubbl/distr/stampa |
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Berlin, [Germany] ; ; Boston, [Massachusetts] : , : De Gruyter, , 2017 |
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©2017 |
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ISBN |
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3-11-055862-9 |
3-11-055912-9 |
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Descrizione fisica |
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1 online resource (422 pages) : illustrations |
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Collana |
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De Gruyter Studies in Mathematical Physics, , 2194-3532 ; ; Volume 42 |
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Disciplina |
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Soggetti |
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Orbital mechanics |
Astrodynamics |
Electronic books. |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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Frontmatter -- Foreword / Efroimsky, Michael -- Contents -- 1. Introduction. Current challenges in space exploration -- Part I: Regularization -- 2. Theoretical aspects of regularization -- 3. The Kustaanheimo-Stiefel space and the Hopf fibration -- 4. The Dromo formulation -- 5. Dedicated formulation: Propagating hyperbolic orbits -- 6. Evaluating the numerical performance -- Part II: Applications -- 7. The theory of asynchronous relative motion -- 8. Universal and regular solutions to relative motion -- 9. Generalized logarithmic spirals: A new analytic solution with continuous thrust -- 10. Lambert's |
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problem with generalized logarithmic spirals -- 11. Low-thrust trajectory design with controlled generalized logarithmic spirals -- 12. Nonconservative extension of Keplerian integrals and new families of orbits -- 13. Conclusions -- Part III: Appendices -- A. Hypercomplex numbers -- B. Formulations in PERFORM -- C. Stumpff functions -- E. Elliptic integrals and elliptic functions -- F. Controlled generalized logarithmic spirals -- G. Dynamics in Seiffert's spherical spirals -- List of Figures -- Bibliography -- Index |
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Sommario/riassunto |
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Regularized equations of motion can improve numerical integration for the propagation of orbits, and simplify the treatment of mission design problems. This monograph discusses standard techniques and recent research in the area. While each scheme is derived analytically, its accuracy is investigated numerically. Algebraic and topological aspects of the formulations are studied, as well as their application to practical scenarios such as spacecraft relative motion and new low-thrust trajectories. |
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