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The principle of engagement underlies much of the relational and organization-public communication research. Unfortunately, the principle of engagement suffers from a lack of clarity in the public relations literature. Use of the term engagement varies widely. This article clarifies the principle of engagement by positioning it within dialogue theory. We posit a conceptualization of engagement as: Engagement is part of dialogue and through engagement, organizations and publics can make decisions that create social capital. Engagement is both an orientation that influences interactions and the approach that guides the process of interactions among groups.

ABSTRACT. We describe a general analysis package for supernova (SN) light curves, called SNANA, that contains a simulation, a light-curve fitter, and a cosmology fitter. The software is designed with the primary goal of using SNe Ia as distance indicators for the determination of cosmological parameters, but it can also be used to study efficiencies for analyses of SN rates, estimate contamination from non-Ia SNe, and optimize future surveys. Several SN models are available within the same software architecture, allowing technical features such as K-corrections to be consistently used among multiple models, and thus making it easier to make detailed comparisons between models. New and improved light-curve models can be easily added. The software works with arbitrary surveys and telescopes and has already been used by several collaborations, leading to more robust and easy-to-use code. This software is not intended as a final product release, but rather it is designed to undergo continual improvements from the community as more is learned about SNe. We give an overview of the SNANA capabilities, as well as some of its limitations.