Lifetime Estrogen Exposure, Cumulative Lifetime Stress, and Cognition in Later Life

The main goal of this study was to begin to examine how stress and estrogen work together to influence memory and thinking in older women. We looked at how stressful experiences affected memory in older women and how the hormone estrogen influenced the relationship between stress and memory. The relationship between cognition, stress, and hormones was investigated by having 15 women aged 60 and older complete stress and hormone questionnaires and perform two memory tasks. Most likely due to the small sample size, we did not find the hypothesized combined effect of lifetime estrogen exposure and cumulative stress on cognition. Yet, this study showed a relationship between psychiatric wellbeing, estrogen, and stress exposure. Furthermore, participants’ cognitive assessment scores were correlated with estrogen exposure and age. The results suggest that estrogen and stress have individual effects on cognition

Active Transport, Public Transportation, and Obesity in Metropolitan Areas of the United States.

There is a well established relationship between exercise and weight in individuals. Recently, relationships between less urban sprawl and more leisure exercise and between certain urban characteristics usually associated with less sprawl and exercise for transportation have been found. This paper completes the less-sprawl-more exercise for transportation-lower weight sequence by finding that counties in metropolitan areas where more people complete their journey to work by walking, biking, or taking public transportation have fewer people who are overweight.

In-Lieu Fee Program Case Studies: Lessons Learned for Potentially Expanding In-Lieu Fee Habitat Coverage in Virginia

This white paper contains case studies of coastal ILF [in-lieu fee] programs across the United States: Maine Natural Resources Conservation Program (“MNRCP”), Northwest Florida Water Management District (“NWFWMD”) ILF Program, Keys Restoration Fund (“KRF”), Sacramento District California ILF Program, Maryland Department of the Environment ILF Program, and Virginia Aquatic Resources Trust Fund (“VARTF”). The Conclusion will provide general recommendations and questions to consider in deciding whether and how to implement an in-lieu fee program for wildlife habitats in Virginia. Each program has a unique regulatory structure and method for selecting projects on which to spend their funds. The programs do tend to face similar challenges and provide similar benefits. Common challenges include securing buy-in from private landowners and completing the state and federal permit processes for mitigation projects by the third growing cycle after selling credits. Despite these frequent hurdles, program sponsors have observed that the programs streamline the permitting process for developers, which reduces the cost of building new projects. ILF programs allow for larger, more impactful mitigation projects, instead of proceeding by a piecemeal approach where the permittees must compensate for only their own environmental impacts. This abstract has been taken from the authors\u27 introduction

Contactless Remote Induction of Shear Waves in Soft Tissues Using a Transcranial Magnetic Stimulation Device

This study presents the first observation of shear wave induced remotely within soft tissues. It was performed through the combination of a transcranial magnetic stimulation device and a permanent magnet. A physical model based on Maxwell and Navier equations was developed. Experiments were performed on a cryogel phantom and a chicken breast sample. Using an ultrafast ultrasound scanner, shear waves of respective amplitude of 5 and 0.5 micrometers were observed. Experimental and numerical results were in good agreement. This study constitutes the framework of an alternative shear wave elastography method

Human Reliability Analysis using a Human Factors Hazard Model

Human Reliability Analysis (HRA) has found application within a diverse set of engineering domains, but the methods used to apply HRA are often complicated, time-consuming, costly to apply, specific to particular (i.e., nuclear) applications, and are not suitable for direct comparison amongst themselves. This paper proposes a Human Factors Hazard Model (HFHM), which builds an HRA method from the tools of Fault Tree Analysis (FTA), Event Tree Analysis (ETA), and a novel model of considering serial Human Error Probability (HEP) more relevant to psychomotor-intensive industrial and commercial applications such as manufacturing, teleoperation, and vehicle operation. The HEP approach uses Performance Shaping Factors (PSFs) relevant to human behavior, as well as specific characteristics unique to a system architecture and its corresponding operational behavior. The HFHM tool is intended to establish a common analysis approach, to simplify and automate the modeling of the likelihood of a mishap due to a human-system interaction during a hazard event. The HFHM is executed commercial software tools (MS Excel and SysML) such that trade and sensitivity studies can be conducted and iterated automatically. The results generated by the HFHM can be used to guide risk assessment, safety requirements generation and management, design options, and safety controls within the system design architecting process. Verification and evaluation of the HFHM through simulation and subject matter expert evaluation illustrate the value of the HFHM as a tool for HRA and system safety analysis in a set of key industrial applications

The Legacy of Colonization and Civil Societies in South Africa

This research analyzes the unique ways that civil societies operate in Sub-Saharan Africa in the context of post-apartheid Cape Town, South Africa. Decades after the demise of apartheid, remnants of inequality remain without the promise of actionable change. We used a computational modeling approach to understand the dynamics of migrants in the receiving community as derived from qualitative interviews conducted with 24 stakeholders in Cape Town, South Africa between 2020 and 2021. Our findings show that the presence of NGOs can promote access to resources and reduce xenophobia if they can have the right influence on government policies