886 resultados para Retrial Inventory with BMAP and Servicc Time,


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In this paper we examine the time T to reach a critical number K0 of infections during an outbreak in an epidemic model with infective and susceptible immigrants. The underlying process X, which was first introduced by Ridler-Rowe (1967), is related to recurrent diseases and it appears to be analytically intractable. We present an approximating model inspired from the use of extreme values, and we derive formulae for the Laplace-Stieltjes transform of T and its moments, which are evaluated by using an iterative procedure. Numerical examples are presented to illustrate the effects of the contact and removal rates on the expected values of T and the threshold K0, when the initial time instant corresponds to an invasion time. We also study the exact reproduction number Rexact,0 and the population transmission number Rp, which are random versions of the basic reproduction number R0.

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In this study, a methodology based in a dynamical framework is proposed to incorporate additional sources of information to normalized difference vegetation index (NDVI) time series of agricultural observations for a phenological state estimation application. The proposed implementation is based on the particle filter (PF) scheme that is able to integrate multiple sources of data. Moreover, the dynamics-led design is able to conduct real-time (online) estimations, i.e., without requiring to wait until the end of the campaign. The evaluation of the algorithm is performed by estimating the phenological states over a set of rice fields in Seville (SW, Spain). A Landsat-5/7 NDVI series of images is complemented with two distinct sources of information: SAR images from the TerraSAR-X satellite and air temperature information from a ground-based station. An improvement in the overall estimation accuracy is obtained, especially when the time series of NDVI data is incomplete. Evaluations on the sensitivity to different development intervals and on the mitigation of discontinuities of the time series are also addressed in this work, demonstrating the benefits of this data fusion approach based on the dynamic systems.

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The first edition of the German original was issued Frankfurt, 1700, under the title "Entdecktes judenthum", but was suppressed until after a second edition appeared at Königsberg, 1711. Editions of the translation, with preface by J.P. Stehelin, were issued 1732-34 and 1742 under title: The traditions of the Jews ...

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Halkett and Laing, following a passing reference to this work in Notes and queries, March 12, 1852, p. 259, ascribe the authorship to "Mrs. Flannigan". and they are followed by Cushing. V. L. Oliver, however, in his History of the island of Antigua, London, 1894-99, v. 1, p. iv. attributes the work to "Mrs. Lanaghan".

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"The present volume has been reconstructed from the folio edition by a literary friend [John Sharpe] ... the ... revision of the manuscript ... having been intrusted to myself."--Sir Henry Ellis, in preface (dated 1844) cf. also Lowndes.