The dark and baryonic matter content of low surface brightness disk galaxies

We present mass models of a sample of 19 low surface brightness (LSB) galaxies and compare the properties of their constituent mass components with those of a sample of high surface brightness (HSB) galaxies.We find that LSB galaxies are dark matter dominated. Their halo parameters are only slightly affected by assumptions on stellar mass-to-light ratios. Comparing LSB and HSB galaxies we find that mass models derived using the maximum disk hypothesis result in the disks of LSB galaxies having systematically higher stellar mass-to-light ratios than HSB galaxies of similar rotation velocity. This is inconsistent with all other available evidence on the evolution of LSB galaxies. We argue therefore that the maximum disk hypothesis does not provide a representative description of the LSB galaxies and their evolution. Mass models with stellar mass-to-light ratios determined by the colors and stellar velocity dispersions of galactic disks imply that LSB galaxies have dark matter halos that are more extended and less dense than those of HSB galaxies. Surface brightness is thus related to the halo properties. LSB galaxies are slowly evolving, low density and dark matter dominated galaxies.Comment: 23 pages Latex, 12 postscript figures, uses mn.sty. Accepted for publication in MNRA

The elevation, slope, and curvature spectra of a wind roughened sea surface

The elevation, slope and curvature spectra are defined as a function of wave number and depend on the friction velocity. There are five wave number ranges of definition called the gravity wave-gravity equilibrium range, the isotropic turbulence range, the connecting range due to Leykin Rosenberg, the capillary range, and the viscous cutoff range. The higher wave number ranges are strongly wind speed dependent, and there is no equilibrium (or saturated) capillary range, at least for winds up to 30 meters/sec. Some properties of the angular variation of the spectra are also found. For high wave numbers, especially in the capillary range, the results are shown to be consistent with the Rayleigh-Rice backscattering theory (Bragg scattering), and certain properties of the angular variation are deduced from backscatter measurements

PUBH 6535 - Theoretical Perspectives of the Social and Behavioral Sciences in Public Health

This course is designed to familiarize students with the history and current applications of social and behavioral sciences as they are applied to public health practice and research. It explores social and behavioral science models, theories, and approaches that inform public health, and their philosophical roots. The course also examines social and behavioral determinants of health equity across the ecological spectrum. Emphasis is placed on critical thinking skills to help students synthesize and utilize information in research and practice. An important contribution of this course is the emphasis on recognizing the contributions of social and behavioral science research and practice to enhance public health

Project PrEP: A PrEP Education Initiative in South Georgia

This presentation will describe the process of planning and implementing Project PrEP, a community health initiative to increase PrEP awareness among communities at high HIV risk in south Georgia, especially MSM. Intervention strategies, key findings, and lessons learned will be discussed

PUBH 4890 - Directed Individual Study

This course is intended to enhance your knowledge of a contemporary public health issue while developing your skills as a researcher. An essential part of scientific research is learning to conduct a detailed literature review. Without this fundamental skill, you are likely to waste a great deal of time exploring questions that have already been answered or fail to get the best results due to outdated theories and methods

PUBH 3330 - Modifying Health Behaviors

This course is intended to introduce students to the learning and behavioral science theories that provide a framework for the practice of health education and promotion. Application of the theories to planning and implementing health promotion and education programs for individuals, groups, families, and communities will be emphasized. This course also introduces the students to various approaches to describing, explaining, and predicting health behaviors that have or are perceived to have significant effect on human health. Prerequisite: PUBH 213

PUBH 8136: Theoretical Perspectives of the Social and Behavioral Sciences in Public Health

This course will explore social and behavioral science theories, models, and approaches that inform public health research and practice, as well as their philosophical foundations. With emphasis on an ecological perspective, students will apply relevant theories to understanding community health issues and to developing interventions. The course also examines social and behavioral determinants of health equity across the ecological spectrum. In this course, students will gain an enhanced understanding of the contributions of the social and behavioral sciences to public health

PUBH 6535A - Theoretical Perspectives of the Social and Behavioral Sciences in Public Health

This course is designed to familiarize students with the history and current applications of social and behavioral sciences as they are applied to public health practice and research. It explores social and behavioral science models, theories, and approaches that inform public health, and their philosophical roots. The course also examines social and behavioral determinants of health equity across the ecological spectrum. Emphasis is placed on critical thinking skills to help students synthesize and utilize information in research and practice. An important contribution of this course is the emphasis on recognizing the contributions of social and behavioral science research and practice to enhance public health

PUBH 6535 - Theoretical Perspectives of the Social and Behavioral Sciences in Public Health

This course is designed to familiarize students with the history and current applications of social and behavioral sciences as they are applied to public health practice and research. It explores social and behavioral science models, theories, and approaches that inform public health, and their philosophical roots. The course also examines social and behavioral determinants of health equity across the ecological spectrum. Emphasis is placed on critical thinking skills to help students synthesize and utilize information in research and practice. An important contribution of this course is the emphasis on recognizing the contributions of social and behavioral science research and practice to enhance public health