91 research outputs found
Recent Observations of Betelgeuse and New Instrumentation at the ISI
The Infrared Spatial Interferometer (ISI) has been conducting mid-infrared observations of late-type stars for about 18 years. A long-term set of diameter measurements of Betelgeuse at 11.15 ÎŒm shows pronounced changes in the stellar size over time. These changes may arise from variations in the opacity of the environment immediately surrounding the star. New instrumentation is being developed to identify the composition and kinematics of the circumstellar environment of Betelgeuse, and of other late-type stars. A digital spectrometer-correlator is being built and tested that will enable visibility measurements on and off individual molecular spectral lines. Results from testing the spectrometer system are presented
Deference Done Better
There are many thingsâcall them âexpertsââthat you should defer to in forming
your opinions. The trouble is, many experts are modest: theyâre less than certain
that they are worthy of deference. When this happens, the standard theories of
deference break down: the most popular (âReflectionâ-style) principles collapse to
inconsistency, while their most popular (âNew-Reflectionâ-style) variants allow you
to defer to someone while regarding them as an anti-expert. We propose a middle
way: deferring to someone involves preferring to make any decision using their
opinions instead of your own. In a slogan, deferring opinions is deferring decisions.
Generalizing the proposal of Dorst (2020a), we first formulate a new principle that
shows exactly how your opinions must relate to an expertâs for this to be so. We then
build off the results of Levinstein (2019) and Campbell-Moore (2020) to show that
this principle is also equivalent to the constraint that you must always expect the
expertâs estimates to be more accurate than your own. Finally, we characterize the
conditions an expertâs opinions must meet to be worthy of deference in this sense,
showing how they sit naturally between the too-strong constraints of Reflection
and the too-weak constraints of New Reflection
Listening to the voices of women suffering perinatal psychological distress
This article suggests that transactional analysis can be an effective treatment approach for women suffering from mental health conditions and the emotional and life disturbances that may occur during the perinatal period. It offers a brief introduction to perinatal psychological distress followed by a description of the use of transactional analysis psychotherapy for this condition. The article outlines a new model for a research project that aims to ascertain womenâs views on the helpfulness of the treatment and to gain a better understanding of the stigma often associated with perinatal mental health issues. The author argues for the necessity of qualitative research to assess the efficacy of transactional-analysis-based treatment and to increase our knowledge about the change process in transactional analysis psychotherapy with this client population as well as to inform future transactional analysis treatment protocols
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