Relationship Stress: Social Media Edition

Couples involved in a romantic relationships (dating, engaged, married) face a variety of stressors that can determine the quality and sustainability of the relationship. These stressors can include money, children, work schedules, and opinions of family and friends about the relationship or one’s significant other. With arrival of the internet, the use of social media has become a new source of stress among relationships. Altshule (2015) found social media use negatively impacts a relationship when one’s significant other is always on social media, engages in appropriate activity online, or is overly private when online (i.e. hiding online activity from their partner). Bea (2012) found that having a significant other who shares too much information about the relationship online, maintains contact with an ex (e.g. tagging, messaging, accepting a friend request), or who suspiciously monitors the online activity of his/her significant other can negatively affect a romantic relationship. Fritz (2015) found sending tweets to friends or followers of the opposite sex can create a source of stress within a romantic relationship. A four part survey was presented to participants, aimed at examining the relatively new stressor (social media) compared to more traditional stressors in relationships. The survey was provided to college students that were members of the Marshall University Psychology Department Human Subjects Pool (SONA)

LSST: from Science Drivers to Reference Design and Anticipated Data Products

(Abridged) We describe here the most ambitious survey currently planned in the optical, the Large Synoptic Survey Telescope (LSST). A vast array of science will be enabled by a single wide-deep-fast sky survey, and LSST will have unique survey capability in the faint time domain. The LSST design is driven by four main science themes: probing dark energy and dark matter, taking an inventory of the Solar System, exploring the transient optical sky, and mapping the Milky Way. LSST will be a wide-field ground-based system sited at Cerro Pach\'{o}n in northern Chile. The telescope will have an 8.4 m (6.5 m effective) primary mirror, a 9.6 deg$^2$ field of view, and a 3.2 Gigapixel camera. The standard observing sequence will consist of pairs of 15-second exposures in a given field, with two such visits in each pointing in a given night. With these repeats, the LSST system is capable of imaging about 10,000 square degrees of sky in a single filter in three nights. The typical 5$\sigma$ point-source depth in a single visit in $r$ will be $\sim 24.5$ (AB). The project is in the construction phase and will begin regular survey operations by 2022. The survey area will be contained within 30,000 deg$^2$ with $\delta<+34.5^\circ$, and will be imaged multiple times in six bands, $ugrizy$, covering the wavelength range 320--1050 nm. About 90\% of the observing time will be devoted to a deep-wide-fast survey mode which will uniformly observe a 18,000 deg$^2$ region about 800 times (summed over all six bands) during the anticipated 10 years of operations, and yield a coadded map to $r\sim27.5$. The remaining 10\% of the observing time will be allocated to projects such as a Very Deep and Fast time domain survey. The goal is to make LSST data products, including a relational database of about 32 trillion observations of 40 billion objects, available to the public and scientists around the world.Comment: 57 pages, 32 color figures, version with high-resolution figures available from https://www.lsst.org/overvie