We outline the background, motivation, and requirements of an approach to create abstractions of event streams, which are timetagged sequences of events generated by an executing software system. Our work is motivated by the need to process event streams with millions of events that are generated by a spacecraft, that must be processed quickly after they are received on the ground. Our approach...

Traditional library instruction programs teach scientists how to find and manage information, but not how to report their research findings effectively. Since 1990, the William H. Welch Medical Library has sponsored classes on scientific writing and, since 1991, has offered a fee-based editing service for affiliates of the Johns Hopkins Medical Institutions. These programs were designed to fill...

In a world of increasing dynamism, context-awareness gives promise through the ability to detect changes in the context of devices, environment, and people. Equally, with stream reasoning using languages including C-SPARQL, continuous streams of raw data in RDF can be reasoned over for context-awareness. Writing many context queries and rules this way can however be error prone, and often conta...

Sensors capable of sensing phenomena at high data rates—on the order of tens to hundreds of thousands of samples per second—are useful in many industrial, civil engineering, scientific, networking, and medical applications. In these applications, high-rate streams of data produced by sensors must be processed and analyzed using a combination of both event-stream and signal-processing operations...

Today, any application that requires processing information gathered from the Web will likely require a parallel processing approach to be able to scale. While writing such applications, the developer should be able to exploit several types of parallelism paradigms in a natural way. Most of the available development tools are focused on just one of these parallelism types, e.g. the data paralle...

not take the place of a standardized logistic regression coefficient for valuating the strength of the influences of the independent variables on the dependent variable, relative to one another.” The strength of each independent variable cannot be judged based on the magnitude of the OR, so that a larger OR for one independent variable might not have a stronger association than a smaller OR for...

Few medical journals specifically instruct authors to use the active voice and avoid the passive voice, but advice to that effect is common in the large number of stylebooks and blogs aimed at medical and scientific writers. Such advice typically revolves around arguments that the passive voice is less clear, less direct, and less concise than the active voice, that it conceals the identity of ...