Infrared radiometric technique in temperature measurement

One class of commercially available imaging infrared radiometers using cooled detectors is sensitive to radiation over the 3 to 12 micron wavelength band. Spectral filters can tailor instrument sensitivity to specific regions where the target exhibits optimum radiance. The broadband spectral response coupled with real time two-dimensional imaging and emittance/background temperature corrections make the instruments useful for remote measurement of surface temperatures from -20 C to +1500 C. Commonly used radiometric techniques and assumptions are discussed, and performance specifications for a typical modern commercial instrument are presented. The potential usefulness of an imaging infrared radiometer in space laboratories is highlighted through examples of research, nondestructive evaluation, safety, and routine maintenance applications. Future improvements in instrument design and application of the radiometric technique are discussed

Self-Compassion, Self-Injury, and Pain

We conducted an experiment to examine self-compassion and responses to pain among undergraduate women with and without histories of self-injury. After a writing task that has been shown to increase self-compassion in a values-affirming condition relative to a neutral control condition, participants completed a self-report measure of state self-compassion and the cold pressor task. As predicted, participants with a history of self-injury reported lower trait self-compassion than those without such a history, and participants in the values-affirming condition reported significantly higher state self-compassion than those in the control condition. Moreover, participants with a history of self-injury demonstrated significantly less insensitivity to pain in the values-affirming condition than the control condition. Future research should investigate the possibility that interventions involving self-compassion and/or affirmation of values may help correct high-risk responses to pain among those who self-injure

Age, Gender, and Socioeconomic Status Differences in Explicit and Implicit Beliefs About Effortlessly Perfect Self-Presentation

Feeling pressure to project an image of effortless perfection -- always appearing to perform with self-confidence and ease --- has been portrayed in the media as an increasingly common mental health vulnerability with potentially serious implications for college women. Despite this, almost no empirical research exists on effortlessly perfect self–presentation (EPSP) or demographic differences in it. • Some recent research suggests that perfectionism is on the rise among young people (Curran & Hill, 2017), and that it is more associated with mental health problems among students with high rather than low socioeconomic status (Lyman & Luthar, 2014). However, these studies did not focus specifically on EPSP, which differs from more typical perfectionism in that it prohibits apparent effort or anxiety while striving for perfection. Of the two published studies on EPSP, one did not examine demographic differences (Flett et al., 2016) and the other found higher endorsement of EPSP among men than among women (Travers et al., 2016). • Anonymous interviews we conducted about EPSP in 40 college students (Glazer et al., in prep) yielded very complex, self-contradictory responses suggesting that beliefs about EPSP may be characterized by stigma and ambivalence. For this reason we decided to focus the current study on indirect and implicit measures of EPSP. • In this study, participants completed three new scales about EPSP, along with the two existing measures of this phenomenon, several mental health measures, and demographics questions. They also rated the perceived social status and self-esteem of two target individuals in a within-person experimental design

Faculty Mentoring At A Distance: Coming Together In The Virtual Community

This mixed-methods study explores how faculty in a virtual university experience the role of mentor working with doctoral students at a distance. This study uses faculty narratives to identify faculty actions that might be different from mentoring traditional doctoral students in a face to face program. In the new working adult universities, learners are not necessarily seeking initial careers through doctoral study but are enhancing established careers. The study investigates the mentoring skills on line faculty bring to the virtual learning space and describes how a graduate faculty teaching in a virtual learning space perform the role of mentor

A Conceptual Framework for Studying Safety Climate and Culture of Commercial Airlines

A comprehensive safety climate and safety culture framework, which can be utilized to assess various predictors and consequences of safety climate and to assess airline’s safety culture in relation to one another, is presented. The framework depicts a process whereby individual, group, and organizational predictor variables, through perceived safety climate, affect first level outcomes. First level outcomes can lead to direct costs for the organization, as well as lowered productivity. In the framework, individual and environment variables are purported to moderate the relationship between work-related events and safety climate. Motivation is also expected to mediate the relationships between predictors and safety climate, as well as predictors and individual level consequences. Overall, organizational culture and environment are likely to affect safety climate and safety culture

Low temperature superlattice in monoclinic PZT

TEM has shown that the strongly piezoelectric material Pb(Zr0.52Ti0.48)O3 separates into two phases at low temperatures. The majority phase is the monoclinic phase previously found by x-ray diffraction. The minority phase, with a nanoscale coherence length, is a slightly distorted variant of the first resulting from the anti-phase rotation of the oxygen octahedra about [111]. This work clears up a recent controversy about the origin of superlattice peaks in these materials, and supports recent theoretical results predicting the coexistence of ferroelectric and rotational instabilities.Comment: REVTeX4, 4 eps figures embedded. JPG version of figs. 2&4 is also include

Picosecond time-resolved fluorescence of phycobiliproteins

The α- and β-subunits of C-phycocyanin from Mastigocladus laminosus were prepared according to revised procedures. Both subunits are isolated as dimers, which can be dissociated into monomers with detergent mixtures. The fluorescence decay kinetics are similar for the respective monomers and dimers. In no case could they be fitted by only one (α-subunit) or two exponentials (β-subunit) which are predicted by theory for samples with a unique chromophore—protein arrangement containing one and two chromophores, respectively. It is suggested that there exists a heterogeneity among the chromophores of the subunits, which may persist in the highly aggregated complexes present in cyanobacterial antennas