Gender, Emotional Intelligence, and the Need for Popularity: Exploring the Causes of Faux Pas Posting Beyond the Behavior of Friends

Inappropriate, or faux pas, posting on social media can negatively impact students while in college and after graduation. To better understand this phenomenon, researchers have investigated various factors that influence students to engage in this risky behavior. Previous research has shown the posting behavior of close friends to be a significant predictor of a student\u27s own inappropriate posting. This study builds on existing literature by exploring gender, emotional intelligence, and need for popularity as potential causes of faux pas posting beyond the behavior of friends. Specifically, a survey of undergraduate college students (N=209) was used to measure the constructs of interest on four social media platforms: Facebook, Twitter, Instagram, and Snapchat. Supporting previous research, the results indicate the posting behavior of friends was a significant predictor of both general and specific faux pas posting across all four social media platforms. Although gender, emotional intelligence, and need for popularity were significantly related to faux pas posting on one or more platforms, none of the constructs provided more explanatory power than friend posting behavior alone. The study provides a discussion of these results and their implications for developing interventions and future research

Pan-Atlantic analysis of the overlap of a highly migratory species, the leatherback turtle, with pelagic longline fisheries

Large oceanic migrants play important roles in ecosystems, yet many species are of conservation concern as a result of anthropogenic threats, of which incidental capture by fisheries is frequently identified. The last large populations of the leatherback turtle, Dermochelys coriacea, occur in the Atlantic Ocean, but interactions with industrial fisheries could jeopardize recent positive population trends, making bycatch mitigation a priority. Here, we perform the first pan-Atlantic analysis of spatio-temporal distribution of the leatherback turtle and ascertain overlap with longline fishing effort. Data suggest that the Atlantic probably consists of two regional management units: northern and southern (the latter including turtles breeding in South Africa). Although turtles and fisheries show highly diverse distributions, we highlight nine areas of high susceptibility to potential bycatch (four in the northern Atlantic and five in the southern/equatorial Atlantic) that are worthy of further targeted investigation and mitigation. These are reinforced by reports of leatherback bycatch at eight of these sites. International collaborative efforts are needed, especially from nations hosting regions where susceptibility to bycatch is likely to be high within their exclusive economic zone (northern Atlantic: Cape Verde, Gambia, Guinea Bissau, Mauritania, Senegal, Spain, USA and Western Sahara; southern Atlantic: Angola, Brazil, Namibia and UK) and from nations fishing in these high-susceptibility areas, including those located in international waters

Loss of head in elbows and tees

Thesis (BS)--University of Illinois, 1912Typescrip

Managing the initial transition from student to professional radiographer: Making induction and preceptorship count

Background: Today, increased marketisation of the higher education (HE) and heath sectors requires that students in allied healthcare disciplines make an almost instantaneous shift upon qualification from a consumer identity to that of service provider, with a range of sharp corollary impacts upon their senses of self and accountability (Sloane and Miller, 2017). In these terms, how the earliest days of post-qualification employment are managed can have profound and long-lasting consequences. In this paper, emergent of a broader study funded by the College of Radiographers Industrial Partnership Scheme, findings around this initial transition period in diagnostic radiography are investigated. Methods: With institutional ethical approval, N=20 (f=13, m=7) junior diagnostic radiographers working across the UK were recruited for extended, semi-structured telephone interviews. Verbatim transcripts were analysed using Straussian Grounded Theory (Waring et al., 2018). Results: Participants reported a range of nuanced positive experiences of individually-tailored induction and preceptorship, which had smoothed the pathway into practice in both the short and longer terms; they helped rapidly align personal identities/expectations with that of a “real radiographer.” While actively negative (often generic) experiences were reported to have stymied this process, an overall absence of induction/preceptorship was received more variably. While some participants felt undermined, others claimed that it had boosted their resilience and made them more ready for the challenges ahead. Conclusion: Findings echo the concerns of Yale (2019), regarding personal tutoring in HE; it may be the case that no transition-management is better for new radiographers’ adjustment than something too generic and/or inflexible

X-rays from a radio-loud compact BAL Quasar 1045+352 and the nature of outflows in radio-loud BAL Quasars

We present new results on X-ray properties of radio loud broad absorption line (BAL) quasars and focus on broad-band spectral properties of a high ionization BAL (HiBAL) compact steep spectrum (CSS) radio-loud quasar 1045+352. This HiBAL quasar has a very complex radio morphology indicating either strong interactions between a radio jet and the surrounding interstellar medium or a possible re-start of the jet activity. We detected 1045+352 quasar in a short 5 ksec Chandra ACIS-S observation. We applied theoretical models to explain spectral energy distribution (SED) of 1045+352 and argue that non-thermal, inverse-Compton emission from the innermost parts of the radio jet can account for a large fraction of the observed X-ray emission. In our analysis we also consider a scenario in which the observed X-ray emission from radio-loud BAL quasars can be a sum of inverse-Compton jet X-ray emission and optically thin corona X-ray emission. We compiled a sample of radio-loud BAL quasars that were observed in X-rays to date and report no correlation between their X-ray and radio luminosity. However, the radio-loud BAL quasars show a large range of X-ray luminosities and absorption columns. This is consistent with the results obtained earlier for radio-quiet BAL quasars and may indicate an orientation effect in BAL quasars or more complex dependence between X-ray emission, radio emission and an orientation based on the radio morphology.Comment: 10 pages, 3 figures, accepted for publication in ApJ, corrected typos and reference

“Looking back at my student years now…”: Recently-qualified radiographers’ retroactive understandings of key resilience sources

Background: The rapid evolution of healthcare provision models in the UK has left many Higher Education curricula in the medical imaging sciences struggling to fully equip their graduates for engagement with the vagaries of full clinical practice upon qualification (Sloane and Miller, 2017). Emerging from a national study of the practical experiences of recently-qualified diagnostic radiographers, however, this paper addresses key aspects of the participants’ undergraduate experience that had directly informed their subsequent resilience in the workplace. Methods: With institutional ethical approval, N=20 diagnostic radiographers of one to two years post-graduation experience, working across the UK, sat for extended, semi-structured telephone interviews. Verbatim transcripts were analysed using Straussian Grounded Theory (Miller et al., 2019). Results: Participants accounted that they had sourced resilience from many aspects of their undergraduate experience. Four issues, however, were recurrent in nearly all interviews. 1. Positive clinical experiences during placement routinely reassured participants they were ultimately “up to the job.” 2. “Errors without insults” during placement were taken to be highly constructive development experiences. 3. Strong link-tutoring provided intellectual reinforcement of practical and social skills during placement. 4. Academic content that unambiguously elucidated its functional value was essential in providing confidence in procedural knowledge. Conclusion: Observably, the strongest sources of resilience for participants with respect to their subsequent clinical practice were themselves practical in nature. While some found no difficulty in extracting confidence from more theoretical aspects of curricula, those aspects were still most successful when actively framed in the most practical terms possible

The Mass-Loss Induced Eccentric Kozai Mechanism: A New Channel for the Production of Close Compact Object-Stellar Binaries

Over a broad range of initial inclinations and eccentricities an appreciable fraction of hierarchical triple star systems with similar masses are essentially unaffected by the Kozai-Lidov mechanism (KM) until the primary in the central binary evolves into a compact object. Once it does, it may be much less massive than the other components in the ternary, enabling the "eccentric Kozai mechanism (EKM):" the mutual inclination between the inner and outer binary can flip signs driving the inner binary to very high eccentricity, leading to a close binary or collision. We demonstrate this "Mass-loss Induced Eccentric Kozai" (MIEK) mechanism by considering an example system and defining an ad-hoc minimal separation between the inner two members at which tidal affects become important. For fixed initial masses and semi-major axes, but uniform distributions of eccentricity and cosine of the mutual inclination, ~10% of systems interact tidally or collide while the primary is on the MS due to the KM or EKM. Those affected by the EKM are not captured by earlier quadrupole-order secular calculations. We show that fully ~30% of systems interact tidally or collide for the first time as the primary swells to AU scales, mostly as a result of the KM. Finally, ~2% of systems interact tidally or collide for the first time after the primary sheds most of its mass and becomes a WD, mostly as a result of the MIEK mechanism. These findings motivate a more detailed study of mass-loss in triple systems and the formation of close NS/WD-MS and NS/WD-NS/WD binaries without an initial common envelope phase.Comment: 12 pages, 6 figures, 1 table. Accepted for publication in ApJ. For a brief video explaining this paper, see http://youtu.be/4CdTOF17q5

The fourth flight of CHESS: spectral resolution enhancements for high-resolution FUV spectroscopy

In this proceeding, we describe the scientific motivation and technical development of the Colorado Highresolution Echelle Stellar Spectrograph (CHESS), focusing on the hardware advancements and testing of components for the fourth and final launch of the payload (CHESS-4). CHESS is a far ultraviolet rocket-borne instrument designed to study the atomic-to-molecular transitions within translucent cloud regions in the interstellar medium. CHESS is an objective echelle spectrograph, which uses a mechanically-ruled echelle and a powered (f/12.4) cross-dispersing grating; it is designed to achieve a resolving power R > 100,000 over the band pass λλ 1000–1600 Å. CHESS-4 utilizes a 40 mm-diameter cross-strip anode readout microchannel plate detector, fabricated by Sensor Sciences LLC, to achieve high spatial resolution with high global count rate capabilities (∼ MHz). An error in the fabrication of the cross disperser limited the achievable resolution on previous launches of the payload to R ∼ 4000. To remedy this for CHESS-4, we physically stress the echelle grating, introducing a shallow toroidal curvature to the surface of the optic. Preliminary laboratory measurements of the resulting spectrum show a factor of 4–5 improvement to the resolving power. Results from final efficiency and reflectivity measurements for the optical components of CHESS-4 are presented, along with the pre-flight laboratory spectra and calibration results. CHESS-4 launched on 17 April 2018 aboard NASA/University of Colorado Boulder sounding rocket mission 36.333 UG. We present flight results for the observation of the γ Ara sightline

Modeling the time-resolved quasi-periodic oscillations in AGNs

Observation of the bright Seyfert 1 galaxy RE J1034+396 is believed to demonstrate a drift of the central period of the Quasi Periodic Oscillation (QPO) linearly correlated with the temporary X-ray luminosity. We show, using a specific scenario of the oscillation mechanism in black hole accretion disc, that modeling such correlated trends puts very strong constraints on the nature of this oscillation and the characteristic features of the hot flow in Active Galactic Nuclei (AGN). In our model, QPO oscillations are due to the oscillations of the shock formed in the low angular momentum hot accretion flow, and the variation of the shock location corresponds to the observed changes in the QPO period and the X-ray flux. In this scenario, change in the shock location caused by perturbation of the flow angular momentum is compatible with the trends observed in RE J1034+396, whereas the perturbation of the specific flow energy results in too strong flux response to the change of the oscillation period. Using a complete general relativistic framework to study the accretion flow in the Kerr metric, we discuss the role of the black hole spin in the period drift. Future missions are expected to bring more active galaxies with time-resolved quasi-periodic oscillations so similar quantitative study for other QPO scenarios will be necessary.Comment: Final version accepted for publication in MNRAS. Several modifications made. Eight pages. Six colour figure

Small-molecule inhibition of MuRF1 attenuates skeletal muscle atrophy and dysfunction in cardiac cachexia

Background; Muscle ring finger 1 (MuRF1) is a muscle‐specific ubiquitin E3 ligase activated during clinical conditions associated with skeletal muscle wasting. Yet, there remains a paucity of therapeutic interventions that directly inhibit MuRF1 function, particularly in vivo. The current study, therefore, developed a novel compound targeting the central coiled coil domain of MuRF1 to inhibit muscle wasting in cardiac cachexia. Methods; We identified small molecules that interfere with the MuRF1–titin interaction from a 130 000 compound screen based on Alpha Technology. A subset of nine prioritized compounds were synthesized and administrated during conditions of muscle wasting, that is, to C2C12 muscle cells treated with dexamethasone and to mice treated with monocrotaline to induce cardiac cachexia. Results; The nine selected compounds inhibited MuRF1–titin complexation with IC50 values <25 μM, of which three were found to also inhibit MuRF1 E3 ligase activity, with one further showing low toxicity on cultured myotubes. This last compound, EMBL chemical core ID#704946, also prevented atrophy in myotubes induced by dexamethasone and attenuated fibre atrophy and contractile dysfunction in mice during cardiac cachexia. Proteomic and western blot analyses showed that stress pathways were attenuated by ID#704946 treatment, including down‐regulation of MuRF1 and normalization of proteins associated with apoptosis (BAX) and protein synthesis (elF2B‐delta). Furthermore, actin ubiquitinylation and proteasome activity was attenuated. Conclusions; We identified a novel compound directed to MuRF1's central myofibrillar protein recognition domain. This compound attenuated in vivo muscle wasting and contractile dysfunction in cardiac cachexia by protecting de novo protein synthesis and by down‐regulating apoptosis and ubiquitin‐proteasome‐dependent proteolysis