Abstract We present a facile and low-cost undergraduate laboratory experiment to study exciton physics. Using simple abrasion technique create samples of thin-film van der Waals material spectrometer, we show that prominent excitonic features can be easily resolved in the optical transmission spectra semiconducting transition metal dichalcogenides at ambient conditions. Our method brings intere...

with the implementation of the affordable care act (aca), access to insurance and coverage of preventive care services has been expanded. by removing the barrier of shared costs for preventive care, it is expected that an increase in utilization of preventive care services will reduce the cost of chronic diseases. early detection and treatment is anticipated to be less costly than treatment at ...

Tens of millions of people are currently choosing health coverage on a state or federal health insurance exchange as part of the Patient Protection and Affordable Care Act. We examine how well people make these choices, how well they think they do, and what can be done to improve these choices. We conducted 6 experiments asking people to choose the most cost-effective policy using websites mode...

The current mechanism for providing affordable housing through the planning system in England is based on negotiation within the framework of Planning Policy Guidance Note 3 and Circular 6/98. In this paper the authors examine three groups of questions. First, on the development of the policy, they look at how the need for affordable housing is assessed, how the policy evolved, and how it is cu...

A Food Systems and Public Health conference was convened in April 2009 to consider research supporting food systems that are healthy, green, fair, and affordable. We used a complex systems framework to examine the contents of background material provided to conference participants. Application of our intervention-level framework (paradigm, goals, system structure, feedback and delays, structura...

This policy brief discusses preventive care benefits and cost-sharing included in health insurance provisions of the Affordable Care Act (ACA) legislation and highlights some consequences to Americans and the country in terms of healthcare costs and value.