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Rigorous operational testing (OT) of weapon systems procured by the U.S. Department of Defense (DoD) is fundamental to ensuring that these sophisticated systems not only meet their stated requirements, but also perform under realistic operational conditions when faced by determined adversaries employing their own highly capable offensive and defensive weaponry. DoD's test and training range enterprise provides the geography, infrastructure, technology, expertise, processes, and management that make safe, secure, and comprehensive OT possible. The challenges facing the nation's range infrastructure are both increasing and accelerating. Limited test capacity in physical resources and workforce, the age of test infrastructure, the capability to test advanced technologies, and encroachment impact the ability to inform system performance, integrated system performance and the overall pace of testing. Necessary DoD Range Capabilities to Ensure Operational Superiority of U.S. Defense Systems

The year 2020 presented extraordinary challenges to organizations working to improve population health - from public health agencies at all levels of government to health systems to community-based non-profit organizations responding to health-related social needs. To improve understanding of how different domains in the population health field are responding to and being changed by two major crises (racial injustice and the COVID-19 pandemic), the Roundtable on Population Health Improvement of the National Academies of Sciences, Engineering, and Medicine held a workshop from September 21-24, 2020, titled Population Health in Challenging Times: Insights from Key Domains. The workshop had sessions organized by themes: academic public health and population health; the social sector; health care, governmental public health; philanthropy; and cross-sector work. Each panel discussion highlighted difficulties and opportunities, both internal to the respective institutions and sectors, and at

Topology optimization is a digital method for designing objects in order to achieve the best structural performance, sometimes in combination with other physical requirements. Topology optimization tools use mathematical algorithms, such as the finite element method and gradient computation, to generate designs based on desired characteristics and predetermined constraints. Initially a purely academic tool, topology optimization has advanced rapidly and is increasingly being applied to the design of a wide range of products and components, from furniture to spacecraft. To explore the potential and challenges of topology optimization, the National Academies of Sciences, Engineering, and Medicine hosted a two-day workshop on November 19-20, 2019, Exploiting Advanced Manufacturing Capabilities: Topology Optimization in Design. The workshop was organized around three main topics: how topology optimization can incorporate manufacturability along with functional design; challenges and opport

As people get older, they become more likely to have hearing difficulties in certain situations; for example, having conversations in public settings where there is naturally more noise. This can sometimes lead to isolation, depression, or even fatigue from the effort needed to communicate with others. Clinicians and researchers often do not use standardized outcome measures for hearing interventions that reflect patients' perceptions of real-life improvements. The National Academies of Sciences, Engineering, and Medicine convened a committee of experts to identify a core set of outcomes and corresponding measures that researchers and clinicians should use each time they assess the effectiveness of hearing aids and other treatments in addressing hearing difficulties. The resulting report, Measuring Meaningful Outcomes for Adult Hearing Health Interventions, presents those outcomes and measures, as well as recommendations for promoting their use within the hearing health community.

At the request of the Deputy Assistant Secretary of the Army for Research and Technology, Powering the U.S. Army of the Future examines the U.S. Army's future power requirements for sustaining a multi-domain operational conflict and considers to what extent emerging power generation and transmission technologies can achieve the Army's operational power requirements in 2035. The study was based on one operational usage case identified by the Army as part of its ongoing efforts in multi-domain operations. The recommendations contained in this report are meant to help inform the Army's investment priorities in technologies to help ensure that the power requirements of the Army's future capability needs are achieved.