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1. |
Record Nr. |
UNINA9910741394303321 |
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Autore |
Lewis J. M |
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Titolo |
Dynamic data assimilation [[electronic resource] /] : a least squares approach / / John M. Lewis, S. Lakshmivarahan, Sudarshan Dhall |
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Pubbl/distr/stampa |
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Cambridge, : Cambridge University Press, 2006 |
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ISBN |
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Descrizione fisica |
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1 online resource (xxii, 654p. ) : ill., map |
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Collana |
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Encyclopedia of mathematics and its applications ; ; 104 |
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Altri autori (Persone) |
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LakshmivarahanS |
DhallSudarshan Kumar <1937-> |
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Disciplina |
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Soggetti |
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Simulation methods |
Mathematical models |
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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Note generali |
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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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1. Synopsis; 2. Pathways into data assimilation: illustrative examples; 3. Applications; 4. Brief history of data assimilation; 5. Linear least squares estimation: method of normal equations; 6. A geometric view: projection and invariance; 7. Nonlinear least squares estimation; 8. Recursive least squares estimation; 9. Matrix methods; 10. Optimisation: steepest descent method; 11. Conjugate direction/gradient methods; 12. Newton and quasi-Newton methods; 13. Principles of statistical estimation; 14. Statistical least squares estimation; 15. Maximum likelihood method; 16. Bayesian estimation method; 17. From Gauss to Kalman: sequential, linear minimum variance estimation; 18. Data assimilation-static models: concepts and formulation; 19. Classical algorithms for data assimilation; 20. 3DVAR - a Bayesian formulation; 21. Spatial digital filters; 22. Dynamical data assimilation: the straight line problem; 23. First-order adjoint method: linear dynamics; 24. First-order adjoint method: nonlinear dynamics; 25. Second-order adjoint method; 26. The ADVAR problem: a statistical and a recursive view; 27. Linear filtering - Part I: Kalman filter; 28. Linear filtering-part II; 29. Nonlinear filtering; 30. Reduced rank filters; 31. Predictability: a stochastic view; 32. Predictability: a deterministic view; Bibliography; Index. |
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Sommario/riassunto |
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Dynamic data assimilation is the assessment, combination and synthesis of observational data, scientific laws and mathematical models to make predictions about how a complex physical system will behave. |
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2. |
Record Nr. |
UNINA9910974442003321 |
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Autore |
Fleming Daniel E |
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Titolo |
Time at Emar : The Cultic Calendar and the Rituals from the Diviner's Archive / / Daniel E. Fleming |
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Pubbl/distr/stampa |
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Winona Lake, Ind. : , : Eisenbrauns, , 2000 |
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©2000 |
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ISBN |
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Edizione |
[1st ed.] |
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Descrizione fisica |
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Collana |
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Mesopotamian civilizations ; ; 11 |
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Disciplina |
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Soggetti |
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Religious calendars - Syria - Emar (Extinct city) |
Rites and ceremonies - Syria - Emar (Extinct city) |
HISTORY / Ancient / General |
Electronic books. |
Emar (Extinct city) Religion |
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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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Bibliographic Level Mode of Issuance: Monograph |
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Nota di bibliografia |
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Includes bibliographical references (p. 312-330) and indexes. |
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Nota di contenuto |
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Frontmatter -- Contents -- List of Figures -- Acknowledgments -- Abbreviations -- Chapter 1. Emar and the Question of Time -- Chapter 2. The Diviner’s Archive -- Chapter 3. The Zukru -- Chapter 4. The Annual Cycle -- Chapter 5. Calendrical Time in Ancient Syria -- Appendix. Texts and Translations, with Collation Notes -- Bibliography -- Indexes |
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Sommario/riassunto |
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The recent large-scale watershed projects in northern Syria, where the ancient city of Emar was located, have brought this area to light, thanks to salvage operation excavations before the area was submerged. Excavations at Meskeneh-Qadimeh on the great bend of the Euphrates River revealed this large town, which had been built in the late 14th |
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century and then destroyed violently at the beginning of the 12th, at the end of the Bronze Age. In the town of Emar, ritual tablets were discovered in a temple that are demonstrated to have been recorded by the supervisor of the local cult, who was called the “diviner.” This religious leader also operated a significant writing center, which focused on both administering local ritual and fostering competence in Mesopotamian lore. An archaic local calendar can be distinguished from other calendars in use at Emar, both foreign and local. A second, overlapping calendar emanated from the palace and represented a rising political force in some tension with rooted local institutions. The archaic local calendar can be partially reconstructed from one ritual text that outlines the rites performed during a period of six months.The main public rite of Emar’s religious calendar was the zukru festival. This event was celebrated in a simplified annual ritual and in a more elaborate version of the ritual for seven days during every seventh year, probably serving as a pledge of loyalty to the chief god, Dagan. The Emar ritual calendar was native, in spite of various levels of outside influence, and thus offers important evidence for ancient Syrian culture. These texts are thus important for ancient Near Eastern cultic and ritual studies. Fleming’s comprehensive study lays the basic groundwork for all future study of the ritual and makes a major contribution to the study of ancient Syria. |
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