Amazon.com

About: Amazon.com is a company organization based out in Seattle, Washington, United States. It is known for research contribution in the topics: Service (business) & Service provider. The organization has 13363 authors who have published 17317 publications receiving 266589 citations.

Protection by Natural Blackwater against Disturbances in Ion Fluxes Caused by Low pH Exposure in Freshwater Stingrays Endemic to the Rio Negro

Abstract: Stenohaline freshwater stingrays (Potamotrygon spp.) are endemic to the very dilute (Na+, Cl−, \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} ewcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} ormalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape $\mathrm{Ca}\,^{2+}\leq 30$ \end{document} μmol L−1), often acidic blackwaters of the Rio Negro despite gill Na+ and Cl− transport characteristics that appear unfavorable (high Km, low Jmax). We evaluated the possible protective role of blackwater itself, which is rich in dissolved organic carbon (DOC), as well as the importance of Ca2+ in allowing this tolerance of dilute, acidic...

Virtual machine state replication using dma write records

Abstract: A DMA-capable device of a virtualization host stores a DMA write record, indicating a portion of host memory that is targeted by a DMA write operation, in a write buffer accessible from a virtualization management component of the host. The virtualization management component uses the DMA write record to identify a portion of memory to be copied to a target location to save a representation of a state of a particular virtual machine instantiated at the host.

Joint Constrained Learning for Event-Event Relation Extraction

Abstract: Understanding natural language involves recognizing how multiple event mentions structurally and temporally interact with each other. In this process, one can induce event complexes that organize multi-granular events with temporal order and membership relations interweaving among them. Due to the lack of jointly labeled data for these relational phenomena and the restriction on the structures they articulate, we propose a joint constrained learning framework for modeling event-event relations. Specifically, the framework enforces logical constraints within and across multiple temporal and subevent relations of events by converting these constraints into differentiable learning objectives. We show that our joint constrained learning approach effectively compensates for the lack of jointly labeled data, and outperforms SOTA methods on benchmarks for both temporal relation extraction and event hierarchy construction, replacing a commonly used but more expensive global inference process. We also present a promising case study to show the effectiveness of our approach to inducing event complexes on an external corpus.

Enhanced security for electronic communications

Abstract: Techniques are described for providing enhanced security for electronic communications, such as by including in a message sent between two services a digital signature that is generated by using secret information known to the services, so that the recipient receives assurance regarding the sender's identity if the recipient can replicate the received digital signature using the secret information known to the recipient. In some situations, the enhanced security is used in communications to and/or from an access manager system that provides single sign-on functionality and other functionality to other services for use with those services' users, such as to prevent malicious phishers from inappropriately gaining access to user information. Various services may use the enhanced security techniques when interacting with the access manager system at various times, such as to initiate sign-on for a user and/or to take subsequent action on behalf of a signed-on user.