Triggered massive-star formation on the borders of Galactic HII regions. III. Star formation at the periphery of Sh2-219

Context. Massive-star formation triggered by the expansion of HII regions. Aims. To understand if sequential star formation is taking place at the periphery of the HII region Sh2-219. Methods. We present 12CO(2-1) line observations of this region, obtained at the IRAM 30-m telescope (Pico Veleta, Spain). Results. In the optical, Sh2-219 is spherically symmetric around its exciting star; furthermore it is surrounded along three quarters of its periphery by a ring of atomic hydrogen. This spherical symmetry breaks down at infrared and millimetre wavelengths. A molecular cloud of about 2000\msol lies at the southwestern border of Sh2-219, in the HI gap. Two molecular condensations, elongated along the ionization front, probably result from the interaction between the expanding HII region and the molecular cloud. In this region of interaction there lies a cluster containing many highly reddened stars, as well as a massive star exciting an ultracompact HII region. More surprisingly, the brightest parts of the molecular cloud form a `chimney', perpendicular to the ionization front. This chimney is closed at its south-west extremity by H-alpha walls, thus forming a cavity. The whole structure is 7.5 pc long. A luminous H-alpha emission-line star, lying at one end of the chimney near the ionization front, may be responsible for this structure. Confrontation of the observations with models of HII region evolution shows that Sh2-219 is probably 10^5 yr old. The age and origin of the near-IR cluster observed on the border of Sh2-219 remain unknown.Comment: 11 pages, 10 figures. To be published in A&

High reward makes items easier to remember, but harder to bind to a new temporal context

Learning through reward is central to adaptive behavior. Indeed, items are remembered better if they are experienced while participants expect a reward, and people can deliberately prioritize memory for high- over low-valued items. Do memory advantages for high-valued items only emerge after deliberate prioritization in encoding? Or, do reward-based memory enhancements also apply to unrewarded memory tests and to implicit memory? First, we tested for a high-value memory advantage in unrewarded implicit- and explicit-tests (Experiment 1). Participants first learned high or low-reward values of 36 words, followed by unrewarded lexical decision and free-recall tests. High-value words were judged faster in lexical decision, and more often recalled in free recall. These two memory advantages for high-value words were negatively correlated suggesting at least two mechanisms by which reward value can influence later item-memorability. The ease with which the values were originally acquired explained the negative correlation: people who learned values earlier showed reward effects in implicit memory whereas people who learned values later showed reward effects in explicit memory. We then asked whether a high-value advantage would persist if trained items were linked to a new context (Experiments 2a and 2b). Following the same value training as in Experiment 1, participants learned lists composed of previously trained words mixed with new words, each followed by free recall. Thus, participants had to retrieve words only from the most recent list, irrespective of their values. High- and low-value words were recalled equally, but low-value words were recalled earlier than high-value words and high-value words were more often intruded (proactive interference). Thus, the high-value advantage holds for implicit- and explicit-memory, but comes with a side effect: High-value items are more difficult to relearn in a new context. Similar to emotional arousal, reward value can both enhance and impair memory

The 3Rs of Cell Therapy

The 3Rs for a good education are “reading, 'riting, and 'rithmetic.” The basis for good health care solutions for the emergent field of cell therapy in the future will also involve 3Rs: regulation, reimbursement, and realization of value. The business models in this new field of cell therapy will involve these 3Rs. This article brings forth realities facing this new industry for its approaches to provide curative health care solutions

Measuring Heterogeneous Preferences for Residential Amenities

This study reports on estimates of heterogeneous preferences for residential amenities among households in the Mountain West region of the US. The estimates are derived from a choice experiment funded by the Utah Department of Transportation and Utah Transit Authority—an experiment based upon large samples of both homeowners and renters who participated in a larger, statewide transportation study. The choice experiment and transportation study allow us to control for a rich set of household-level demographic and lifestyle characteristics, which in turn permits identification of a host of factors contributing to heterogeneity in residential preferences. We leverage a percentage-change housing cost attribute included in the experiment to obtain measures of marginal willingness to pay (MWTP) for the various residential attributes and attribute levels in our study. Our method of converting the percentage-change cost attributed to dollar-denominated MWTP results in theoretically plausible estimates of a household\u27s MWTP. We find that preferences for residential amenities differ across homeowners and renters with respect to intensity rather than direction—homeowners are generally willing to pay more for these amenities, in some cases up to seven times more. Our quantitative estimates of these preferences and the extent to which we control for heterogeneity across households provide urban and regional planners with precise monetary welfare measures for a sizable majority of the region\u27s residents

Do We Know What We Think We Know About Payday Loan Borrowers? Evidence from the Survey of Consumer Finances

The field of social work is becoming increasingly savvy regarding the financial lives of people, but despite seeming conclusive and resolved, knowledge about payday loan borrowing is still nascent. To understand it more thoroughly, this study employed descriptive and inferential multivariate quantitative methods using cross-sectional secondary data from the 2013 Survey of Consumer Finances (n = 6015). Results revealed that many of the simple differences found in descriptive analyses of demographic characteristics no longer predict differential payday loan borrowing when controlling for other characteristics. Contrary to prior research, results showed that payday loan borrowers are not more likely to be female, younger, unmarried, lower income, or Hispanic. They are, however, more likely to be African-American, to lack a college degree, and to live in a home they do not own. Recipients of social assistance were approximately five times more likely (OR = 5.2) to be payday loan borrowers than those who did not receive social assistance. The absence of statistically significant differences in the proportion of payday borrowers in income quintiles is notable. Thispaper contributes to addressing the Social Welfare Grand Challenge of building financial capabilities

Logan City CurbsideRecycling Program Phase III Results

This report summarizes the results of a series of survey research projects examining the attitudes and behaviors of Cache County residents regarding recycling programs in 2005. USU researchers were contacted by the Cache County Service District #1, through the Logan Environmental Department, to update information about household recycling attitudes and behaviors, and to present results to various audiences as part of the long-range county solid waste master planning process