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Related DatabasesWeb of Science You must be logged in with an active subscription to view this.Article DataHistorySubmitted: 20 July 2020Accepted: 17 May 2021Published online: 13 September 2021Keywordsepidemic model, varying infectivity, infection-age-dependent deterministic integral equations, early phase epidemic, basic reproduction number $R_0$, Poisson random measureAMS Subject Headings45D0...

Multiplicative preconditioning is a popular tool for handling linear systems of equations provided the relevant information about the associated singular values is available. We propose using additive preconditioners, which are readily available for both general and structured ill conditioned input matrices and which preserve matrix structure. We introduce primal and dual additive preconditioni...

BACKGROUND Intravenous bisphosphonate therapy has been used for treatment of benign and malignant bone diseases and has been linked to osteonecrosis of the jaws. METHODS Records of 638 patients treated with intravenous bisphosphonates were reviewed. Drug used, number of infusions, dosing interval, dosage, duration, and occasion of osteonecrosis, diagnosed by history and physical examination, ...

Financial support: Fondo de Investigación Sanitaria (PI09/0060 and PI12/01847) (to GR), Ligue contre le Cancer – Comité du Calvados (to BS), Ministerio de Ciencia e Innovación (SAF 09/9503 and SAF 12/31242) (to DC), Redes Temáticas de Investigación Cooperativa de Cáncer from the Instituto de Salud Carlos III (ISCIII) (RD2006/20/014 and RD12/0036/0004) and Generalitat de Catalunya 2009SGR967 (to...

Gold electrodes disks (2.0 mm diameter, Metrohm) were mechanically polished with aluminum oxide pads or diamond spray on polishing cloth (Kemet) of progressively decreasing particle size: 1 μm, 0.3 μm and 0.05 μm, with intermittent sonication in water. The electrodes were then electrochemically polished in a deaerated NaOH or KOH 0.5 mol L between the potentials -1.5 V and -0.5 V vs. Ag|AgCl or...

The evolution of the Andrew File System (AFS) into a wide-area distributed file system has encouraged collaboration and information dissemination on a much broader scale than ever before. In this paper, we examine AFS as a provider of wide-area file services to over 80 organizations around the world. We discuss usage characteristics of AFS derived from empirical measurements of the system, and ...

Sheila Jasanoff William A. Lester Jr. Simon A. Levin Marcia C. Linn Michael J. Novacek Anna C. Roosevelt Jean E. Taylor Nancy S. Wexler William T. Golden Treasurer Richard S. Nicholson Executive Officer * SCIENCE (ISSN 0036-8075) is published weekly on Friday, except the last week in December, by the American Association for the Advancement of Science, 1200 New York Avenue, NW, Washington, DC 2...

. We consider a multivariate continuous time process, generated by a system of linear stochastic di¤erential equations, driven by white noise and involving coe¢ cients that possibly vary over time. The process is observable only at discrete, but not necessarily equally-spaced, time points (though equal spacing signi…cantly simpli…es matters). Such settings represent partial extensions of ones s...