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Relating White Light Coronal Brightness to CME Occurrence Rate and Velocity
No full textUsing a unique data set known as the Coronal Brightness Index (CBI), we conducted a study that explored the brightness in the lower solar corona and its relationship to the frequency and velocity of coronal mass ejections (CMEs). We analyzed all M5 and greater solar flares that took place on both limbs of the Earth-facing disk of the Sun between 1998 and 2017. We explored if these flares were associated with CMEs and recorded the velocity of the eruptions if they occurred. Finally, we evaluated the coronal brightness in the corona directly over the active region (AR) source locations of the solar flares. We found that above mean solar brightness units (MSB) over 71\% of these events produced no CME. This result implies coronal brightness may be an important indicator of AR eruptiveness, and thus warrants further investigation.Applied physicscoronal mass ejections, solar corona, solar flares, space weather forecastingPhysicsDegree Awarded: M.S.--Physics. The Catholic University of Americ
Frequency of coronal mass ejection impacts with early terrestrial planets and exoplanets around active solar-like stars
No full textAstrophysical Journal Letters, Volume 886, Issue 2, 1 December 2019, Article number L37.Energetic flares and associated coronal mass ejections (CMEs) from young magnetically active solar-like stars can play a critical role in setting conditions for atmospheric escape as well as penetration of accelerated particles into their atmospheres that promotes formation of biologically relevant molecules. We have used the observationally reconstructed magnetic field of the 0.7 Gyr young Sun's twin, k 1 Ceti, to study the effects of CME deflections in the magnetic corona of the young Sun and their effects on the impact frequency on the early Venus, Earth, and Mars. We find that the coronal magnetic field deflects the CMEs toward the astrospheric current sheet. This effect suggests that CMEs tend to propagate within a small cone about the ecliptic plane increasing the impact frequency of CMEs with planetary magnetospheres near this plane to ∼30% or by a factor of 6 as compared to previous estimate by Airapetian et al. Our model has important implications for the rise of prebiotic chemistry on early terrestrial planets as well as terrestrial-type exoplanets around young G-K dwarfs
Bureaucracy and the failure of politics: challenges to democratic governance
No full textAdministration and Society, Volume 51, Issue 10, 1 November 2019, Pages 1576-1605.Bureaucratic reforms worldwide seek to improve the quality of governance. In this article, we argue that the major governance failures are political, not bureaucratic, and the first step to better governance is to recognize the underlying political causes. Using illustrations from throughout the world, we contend that political institutions fail to provide clear policy goals, rarely allocate adequate resources to deal with the scope of the problems, and do not allow the bureaucracy sufficient autonomy in implementation. Rational bureaucratic responses to these problems, in turn, create additional governance problems that could have been avoided if political institutions perform their primary functions
A Canonical Examination of the Applicability of Canon 1341 of the 1983 Code of Canon Law
No full textNot applicableCanon lawCanon LawDegree Awarded: J.C.L. Canon Law. The Catholic University of Americ
Examining adherence barriers among women with HIV to tailor outreach for long-acting injectable antiretroviral therapy
No full textBMC Women's Health, Volume 20, Issue 1, 25 July 2020, Article number 152.Background: Long-acting (LA) injectable antiretroviral therapy (ART) has been found non-inferior to daily oral ART in Phase 3 trials. LA ART may address key barriers to oral ART adherence and be preferable to daily pills for some people living with HIV. To date, women have been less represented than men in LA ART research. Using longitudinal data from the Women's Interagency HIV Study (WIHS) cohort of women living with HIV in the United States, we examined barriers and facilitators of daily oral ART adherence that may be related to or addressed by LA ART. Methods: We conducted a secondary analysis of WIHS cohort data from 1998 to 2017 among participants seen for at least 4 visits since 1998 who reported using ART at least once (n = 2601). Two dichotomous outcomes, patient-reported daily oral ART adherence and viral suppression were fit using generalized linear models, examining the role of socio-demographic and structural factors. Results: At study enrollment, the median age was 40.5 years, 63% of participants were African American and 22% were Latina. The majority (82%) reported taking ART more than 75% of the time and 53% were virally suppressed. In multivariate analysis, several sub-groups of women had lower odds of reported adherence and viral suppression: 1) younger women (adherence aOR: 0.71; viral suppression aOR: 0.63); 2) women who inject drugs (adherence aOR: 0.38; viral suppression aOR: 0.50) and those with moderate (adherence aOR: 0.59; viral suppression aOR: 0.74) and heavy alcohol consumption (adherence aOR: 0.51; viral suppression aOR: 0.69); 3) those with depressive symptoms (adherence aOR: 0.61; viral suppression aOR: 0.76); and 4) those with a history of going on and off ART (adherence aOR: 0.62, viral suppression aOR: 0.38) or changing regimens (adherence aOR: 0.83, viral suppression aOR: 0.56). Conclusions: Current injectable contraceptive users (vs. non-users) had greater odds of oral ART adherence (aOR: 1.87) and viral suppression (aOR: 1.28). Findings identify profiles of women who may benefit from and be interested in LA ART. Further research is warranted focused on the uptake and utility of LA ART for such key subpopulations of women at high need for innovative approaches to achieve sustained viral suppression
Code of best practices in fair use for the visual arts
No full textCMSI and CAA have put together a presentation quickly outlining the basics of fair use and what the Code covers
Musician plays in Tregaron Conservancy
No full textMusician plays 'Scarborough Fair' in Tregaron Conservancy
Front door of Palm and Tarot Readings
No full textFront door of Palm and Tarot Readings. A sign hangs in the door that reads, 'Covid-19 Update: We are doing all of our readings over the phone. Call today to set up a time. (202)-459-3040.
Little Free Library converted into a free pantry
No full textSmall Little Free Library stand with a sign on it reading: 'To help our neighbors affected by the COVID-19 crisis, the Little Free Library is converted to a Little Free Pantry. Take what you need, and if you can, please donate what you can spare.' Books and canned food can be seen inside