Dynamical Masses of Low Mass Stars in the Taurus and Ophiuchus Star Forming Regions

We report new dynamical masses for 5 pre-main sequence (PMS) stars in the L1495 region of the Taurus star-forming region (SFR) and 6 in the L1688 region of the Ophiuchus SFR. Since these regions have VLBA parallaxes these are absolute measurements of the stars' masses and are independent of their effective temperatures and luminosities. Seven of the stars have masses $<0.6$ solar masses, thus providing data in a mass range with little data, and of these, 6 are measured to precision $< 5 \%$. We find 8 stars with masses in the range 0.09 to 1.1 solar mass that agree well with the current generation of PMS evolutionary models. The ages of the stars we measured in the Taurus SFR are in the range 1-3 MY, and $<1$ MY for those in L1688. We also measured the dynamical masses of 14 stars in the ALMA archival data for Akeson~\&~Jensen's Cycle 0 project on binaries in the Taurus SFR. We find that the masses of 7 of the targets are so large that they cannot be reconciled with reported values of their luminosity and effective temperature. We suggest that these targets are themselves binaries or triples.Comment: 20 page

Hubbard ladders in a magnetic field

The behavior of a two leg Hubbard ladder in the presence of a magnetic field is studied by means of Abelian bosonization. We predict the appearance of a new (doping dependent) plateau in the magnetization curve of a doped 2-leg spin ladder in a wide range of couplings. We also discuss the extension to N-leg Hubbard ladders

Male depression risk, psychological distress, and psychotherapy uptake: Validation of the German version of the male depression risk scale

Background Screening for depressive disorders in men may be complicated by traditional male role norms. The Male Depression Risk Scale (MDRS) was developed to aid screening for depression in men adhering to traditional male role norms and to facilitate identification of depression in men in general and to promote treatment uptake. Aims Validation of a German version of the MDRS and examination of its potential to predict clinical characteristics. Methods In an anonymous online survey comprising of 1605 participants (male: N = 671; 42%), information was obtained on psychological distress, diagnosed psychological disorders, psychotherapy and psychopharmacological treatment. Additional measures included a German version of the MDRS as further mental-health-related constructs. Results The German version of the MDRS showed good validity and reliability. The previously identified 6-factor structure could be replicated for the German version. Compared to the Patient Health Questionnaire 9, the MDRS showed similar detection performance in identifying men who self-reported psychological distress, psychological disorders, depression, psychotherapy usage, or usage of psychopharmacological therapy. Conclusions The German version of the MDRS shows good psychometric validity and represents a valid screening instrument for the identification of psychological distress specifically in men

Numerical Renormalization Group Study of Kondo Effect in Unconventional Superconductors

Orbital degrees of freedom of a Cooper pair play an important role in the unconventional superconductivity. To elucidate the orbital effect in the Kondo problem, we investigated a single magnetic impurity coupled to Cooper pairs with a $p_x +i p_y$ ($d_{x^2-y^2}+id_{xy}$) symmetry using the numerical renormalization group method. It is found that the ground state is always a spin doublet. The analytical solution for the strong coupling limit explicitly shows that the orbital dynamics of the Cooper pair generates the spin 1/2 of the ground state.Comment: 4 pages, 2 figures, JPSJ.sty, to be published in J. Phys. Soc. Jpn. 70 (2001) No. 1

Depression and suicide literacy among Canadian sexual and gender minorities

The purpose of this study was to examine and compare depression and suicide literacy among Canadian sexual and gender minorities (SGM). Online surveys comprised of the 22-item depression literacy scale (D-LIT) and the 12-item literacy of suicide scale (LOSS) were completed by 2,778 individuals identifying as SGM. Relationships between depression and suicide literacy and demographic characteristics were evaluated using multivariable linear regression. Overall, SGM correctly answered 71.3% of the questions from the D-LIT and 76.5% of the LOSS. D-LIT scores were significantly lower among cisgender men and D-LIT and LOSS scores were lower among transgender women when compared to cisgender women. LOSS and D-LIT scores were significantly lower among SGM without a university degree (compared to those with a university degree) and among SGM from ethnic minority groups (compared to White SGM). D-LIT scores, but not LOSS scores, were significantly lower among Indigenous SGM compared to White SGM. The findings provide evidence of differences in suicide and depression literacy between SGM subgroups along multiple social axes. Interventions to increase depression and suicide literacy should be prioritized as part of a mental health promotion strategy for SGM, targeting subgroups with lower literacy levels, including cisgender men, transgender women, Indigenous people, racialized minorities, and those without a university degree

“I could hang up if the practitioner was a prat”: Australian men’s feedback on telemental healthcare during COVID-19

The COVID-19 pandemic restrictions, uncertainties and management inconsistencies have been implicated in men’s rising distress levels, which in turn have somewhat normed the uptake of telemental healthcare services (i.e., phone and/or video-conference-based therapy). Given past evidence of poor engagement with telemental health among men, this mixed-methods study examined Australian men’s use of, and experiences with telemental health services relative to face-to-face care during the pandemic. A community sample of Australian-based men (N = 387; age M = 47.5 years, SD = 15.0 years) were recruited via Facebook advertising, and completed an online survey comprising quantitative items and open-response qualitative questions with the aim of better understanding men’s experiences with telemental healthcare services. In total, 62.3% (n = 241) of participants reported experience with telemental health, and regression analyses revealed those who engaged with telemental health were on average younger, more likely to be gay and university educated. Men who had used telemental health were, on average, more satisfied with their therapy experience than those who had face-to-face therapy. Among those who had telemental healthcare, marginally lower satisfaction was observed among regional/rural based relative to urban men, and those who had to wait longer than 2 months to commence therapy. Qualitative findings highlighted positive aspects of telemental healthcare including comfort with accessing therapy from familiar home environments and the convenience and accessibility of telemental health alongside competing commitments and COVID-19 restrictions. Conversely, drawbacks included technical limitations such as crosstalk impeding therapeutic progress, disconnects and audio-visual lag-times and the ’impersonal’ nature of telemental healthcare services. Findings broadly signal COVID-19 induced shifts norming of the use of virtual therapy services, with clear scope for improvement in the delivery of therapeutic practice using digital modalities, especially among help-seeking men

Job Satisfaction and Psychological Distress among Help-Seeking Men: Does Meaning in Life Play a Role?

Men’s low job satisfaction has been shown to be associated with greater symptoms of psychological distress. Meaning in life may be an important factor in this relationship, but its role as a mediator has not been reported. The present study investigated meaning in life as a mediator in the relationship between job satisfaction and psychological distress among men. A total of 229 employed Canadian men participated in a cross-sectional survey, completing measures of depression and anxiety symptoms, anger severity, job satisfaction, and the presence of meaning in life. Zero-order correlations were calculated, and regression with mediation analyses were conducted; two models were tested: one for anxiety/depression symptoms and one for anger, as the dependent variables. Both mediation models emerged as significant, revealing a significant mediating effect for job satisfaction on the symptoms of psychological distress (anxiety/depression symptoms, anger) through meaning in life, even while controlling for salient confounding variables including COVID-related impacts. Lower job satisfaction was associated with less meaning in life, which in turn was associated with more symptoms of depression, anxiety, and anger. The findings highlight the importance of job satisfaction in the promotion of a sense of meaning in life among men, leading to improved psychological well-being both inside and outside of the workplace

Analytic Detection Thresholds for Measurements of Linearly Polarized Intensity Using Rotation Measure Synthesis

A fully analytic statistical formalism does not yet exist to describe radio-wavelength measurements of linearly polarized intensity that are produced using rotation measure synthesis. In this work we extend the analytic formalism for standard linear polarization, namely that describing measurements of the quadrature sum of Stokes Q and U intensities, to the rotation measure synthesis environment. We derive the probability density function and expectation value for Faraday-space polarization measurements for both the case where true underlying polarized emission is present within unresolved Faraday components, and for the limiting case where no such emission is present. We then derive relationships to quantify the statistical significance of linear polarization measurements in terms of standard Gaussian statistics. The formalism developed in this work will be useful for setting signal-to-noise ratio detection thresholds for measurements of linear polarization, for the analysis of polarized sources potentially exhibiting multiple Faraday components, and for the development of polarization debiasing schemes.Comment: 14 pages, 6 figures, accepted for publication in MNRA