Ralph Rinzler, Folklorist: Professional Biography

Article

From Session to CD: Recent Influences on Irish Traditional Dance Music in America

Article

Parent perceptions of a child physical activity initiative in a rural community.

This study assessed the extent to which a community-based intervention developed for children impacted parent perceptions and behaviors toward physical activity in a rural community. Focus groups and individual interviews were conducted with parents of children who participated in physical activity programs. Analysis revealed an increased community awareness surrounding physical activity following program implementation. Parents and children encouraged each other to be physically active. Ecological barriers and enabling factors to adult physical activity were identified these findings indicate a bidirectional influence between parent and child physical activity and the need for community facilities where families can be active together

The “Dry-Run” Analysis: A Method for Evaluating Risk Scores for Confounding Control

A propensity score (PS) model's ability to control confounding can be assessed by evaluating covariate balance across exposure groups after PS adjustment. The optimal strategy for evaluating a disease risk score (DRS) model's ability to control confounding is less clear. DRS models cannot be evaluated through balance checks within the full population, and they are usually assessed through prediction diagnostics and goodness-of-fit tests. A proposed alternative is the "dry-run" analysis, which divides the unexposed population into "pseudo-exposed" and "pseudo-unexposed" groups so that differences on observed covariates resemble differences between the actual exposed and unexposed populations. With no exposure effect separating the pseudo-exposed and pseudo-unexposed groups, a DRS model is evaluated by its ability to retrieve an unconfounded null estimate after adjustment in this pseudo-population. We used simulations and an empirical example to compare traditional DRS performance metrics with the dry-run validation. In simulations, the dry run often improved assessment of confounding control, compared with the C statistic and goodness-of-fit tests. In the empirical example, PS and DRS matching gave similar results and showed good performance in terms of covariate balance (PS matching) and controlling confounding in the dry-run analysis (DRS matching). The dry-run analysis may prove useful in evaluating confounding control through DRS models

The Grizzly, March 19, 1990

Long Awaited Art Minor Develops • Debate Provokes Thought • Fire: Alarming! • Letters: Reminiscent of Nostalgia?; Ex-Editors Thanked • Global Changes In U.N. • Liberal Studies For Freshmen • New Exhibit Opens: Cohen, Zucker at Berman Art Museum • Bear Pack Set For Outdoor Season • Bears: New and Better • Sorry, No Cigar • UC Tennis • Women\u27s Lax Triumph • Video Review • Green Pledgehttps://digitalcommons.ursinus.edu/grizzlynews/1254/thumbnail.jp

Chandra HETGS Multi-Phase Spectroscopy of the Young Magnetic O Star theta^1 Orionis C

We report on four Chandra grating observations of the oblique magnetic rotator theta^1 Ori C (O5.5 V) covering a wide range of viewing angles with respect to the star's 1060 G dipole magnetic field. We employ line-width and centroid analyses to study the dynamics of the X-ray emitting plasma in the circumstellar environment, as well as line-ratio diagnostics to constrain the spatial location, and global spectral modeling to constrain the temperature distribution and abundances of the very hot plasma. We investigate these diagnostics as a function of viewing angle and analyze them in conjunction with new MHD simulations of the magnetically channeled wind shock mechanism on theta^1 Ori C. This model fits all the data surprisingly well, predicting the temperature, luminosity, and occultation of the X-ray emitting plasma with rotation phase.Comment: 52 pages, 14 figures (1 color), 6 tables. To appear in the Astrophysical Journal, 1 August 2005, v628, issue 2. New version corrects e-mail address, figure and table formatting problem

The Grizzly, October 20, 1989

Student Day a Success • Lynk Speaks On Acquaintance Rape • Letters: Homecoming Letter; Shaped Up! • Wismer Work Beats Kennel • Greenpeace Fights for Nature • Voice for Choice to be Heard • L\u27Bears Teamwork Pays Off • Gettysburg Meets Waterloo • Harriers Succeed Despite Setbacks • Swimmers Look to Season • Athletes of the Week • Confrontation: Not Richter • Esther: Et tu Wismer?https://digitalcommons.ursinus.edu/grizzlynews/1244/thumbnail.jp

The Grizzly, March 26, 1990

Wismer Plans Alternatives • Reaction to Idaho Law • 101 Blaze Update • Letters: Cleaning Service Working?; Fix, Please! • Broaden our Horizons • Sex and Religion • Doughty Discusses Seminar • Time is Now for Men\u27s Lacrosse • Bears Win First • Track Team Beats the Cold • Hackers No More • Tennis Sweep • Bears Roll • Comedy Plays at Ritter • This Week\u27s Video Reviews • Fun With Jell-Ohttps://digitalcommons.ursinus.edu/grizzlynews/1255/thumbnail.jp

The Grizzly, November 3, 1989

Wismer Woes • Curriculum Changes Affect all Students at U.C. • Letters: A Voice for Love ; Coaching Cowardess • Alcohol Awareness • Club Sails Smoothly • For Nature\u27s Nurture • Bears Struggle with Division I • Honors Galore • X-C Teams Look to MAC\u27s • Hoopla!https://digitalcommons.ursinus.edu/grizzlynews/1245/thumbnail.jp

The Grizzly, February 2, 1990

Bio-gate Break-in Has Faculty Bugged • Wismer Transforms: Are We Impressed?! • Letter: Find Something New, GDI! • Townies Lay Reimert Siege • Updike Displayed • Meyer Enjoys U.C. • Ursinus Aquabears Sink E-Town and WMC • Runners Watch Their Step • Hoops Rebound! • Women on Track • Coach Lambdin Taking Charge • In U.C. We Trust • Ursinus Going Smoke Free? • Faculty Recital • Dean Lucas Excites Academicshttps://digitalcommons.ursinus.edu/grizzlynews/1250/thumbnail.jp