Social Determinants of Overweight and Obesity Rates by Elementary School in a Predominantly Hispanic School District.

Objective: This study analyzes the social determinants associated with the overweight or obesity prevalence of 85 elementary schools during the 2010-11 academic year in a predominantly Hispanic school district.

Methods: A binomial logistic regression is used to analyze the aggregate overweight or obesity rate of a school by the percent of Hispanic students in each school, selected school and neighborhood characteristics, and its geographical location.

Results: The proportion of Hispanic enrollment more readily explains a school's aggregate overweight or obesity rate than social determinants or spatial location.

Time series analysis of particle tracking data for molecular motion on the cell membrane.

Biophysicists use single particle tracking (SPT) methods to probe the dynamic behavior of individual proteins and lipids in cell membranes. The mean squared displacement (MSD) has proven to be a powerful tool for analyzing the data and drawing conclusions about membrane organization, including features like lipid rafts, protein islands, and confinement zones defined by cytoskeletal barriers. Here, we implement time series analysis as a new analytic tool to analyze further the motion of membrane proteins.