Single production off neutrons bound in deuteron with linearly polarized photons.

The quasifree photon beam asymmetry, , has been measured at photon energies, , from 390 to 610 MeV, corresponding to center of mass energy from 1.271 to 1.424 GeV, for the first time.

Beam-Target Helicity Asymmetry for γ[over →]n[over →]→π^{-}p in the N^{*} Resonance Region.

We report the first beam-target double-polarization asymmetries in the γ+n(p)→π^{-}+p(p) reaction spanning the nucleon resonance region from invariant mass W=1500 to 2300 MeV. Circularly polarized photons and longitudinally polarized deuterons in solid hydrogen deuteride (HD) have been used with the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. The exclusive final state has been extracted using three very different analyses that show excellent agreement, and these have been used to deduce the E polarization observable for an effective neutron target.

Study of η and η' Photoproduction at MAMI.

The reactions γp→ηp and γp→η^{'}p are measured from their thresholds up to the center-of-mass energy W=1.96  GeV with the tagged-photon facilities at the Mainz Microtron, MAMI. Differential cross sections are obtained with unprecedented statistical accuracy, providing fine energy binning and full production-angle coverage.

Precision Measurement of the p(e,e^{'}p)π^{0} Reaction at Threshold.

New results are reported from a measurement of π^{0} electroproduction near threshold using the p(e,e^{'}p)π^{0} reaction. The experiment was designed to determine precisely the energy dependence of s- and p-wave electromagnetic multipoles as a stringent test of the predictions of chiral perturbation theory (ChPT). The data were taken with an electron beam energy of 1192 MeV using a two-spectrometer setup in Hall A at Jefferson Lab.

Measurement of the 1H(γ, p)π0 reaction using a novel nucleon spin polarimeter.

We report the first large-acceptance measurement of polarization transfer from a polarized photon beam to a recoiling nucleon. The measurement pioneers a novel polarimetry technique, which can be applied to many other nuclear and hadron physics experiments. The commissioning reaction of 1H(γ, p)π0 in the range 0.

Community leader support for tobacco control activities & policies on Guam.

Objectives: Guam has the highest smoking rate in the United States. This study examined Guam community leaders' attitudes toward cigarette smoking and their interest in changing local tobacco control policies.

Design: Cross-sectional survey.

Physical activity and nutritional status of adolescents on Guam.

The 1999 Safe & Drug Free Schools and Communities Youth Risk Behavior Study collected data from representative samples of both high school (n=590) and middle school students (n=643) on Guam in May, 1999. Results showed that the dietary and exercise habits of Guam's adolescents were sub-optimal. Out of the 643 middle school students surveyed, 26% consumed at least 3 meals per week at a fast food restaurant and 53.

Tobacco use among Pacific Islanders: risk-behavior surveys and data sets for the study of smoking behavior on Guam.

Objectives: To increase awareness of data resources from the Pacific Island of Guam, and their utility for research investigations of factors that encourage or discourage smoking among Pacific Islanders, and in turn, to produce empirical findings on tobacco use among Pacific Islanders to help fill data gaps on Asian American and Pacific Islander (AAPI) tobacco use for small AAPI populations.

Methods: Guam's 1995 and 1999 Behavioral Risk Factor Surveillance System (BRFSS) data sets were selected, as well as its 1999 Safe and Drug Free Schools and Communities Youth Risk Behavior System (YRBS) study, and a panel study of parental influences on risk behavior of middle school age youth conducted in 2000. Resultant sample sizes were 896 persons in 1995, and 506 in 1999.

The influence of ethnicity and socioeconomic status on the use of mammography by Asian and Pacific island women on Guam.

The effects of ethnicity and socioeconomic status on the use of screening mammograms were assessed for a probability sample of Chamorro, Filipino, White, and other Asian and Pacific island women residing on Guam. Using logistic regression analysis, we found that socioeconomic status significantly influenced the use of screening mammograms among Chamorro and Filipino women while strong ethnic effects remained for other Asian and Pacific island women. Age had a significant influence of the use of screening mammograms.