; (2) the implementation of rigorous scientific testing to support the development of trustworthy and safe artificial intelligence and data systems; and (3) the development of machine learning and other artificial intelligence applications to support measurement science research programs and take steps to modernize the Institute’s research infrastructure. 7. Internet of things The Secretary, acting through the Director, shall continue to conduct research with respect to and support the expanded connectivity, interoperability, and security of interconnected systems and other aspects of the internet of things, including through— (1) the development of new tools and methodologies for cybersecurity of the internet of things; (2) the development of technologies to address network congestion and device interference, such as the development of testing tools for next generation wireless communications, internet of things protocols, coexistence of wireless communications systems, and spectrum sharing; (3) convening experts in the public and private sectors to develop recommendations for accelerating the adoption of sound interoperability standards, guidelines, and best practices for the internet of things; and (4) the development and publication of new cybersecurity tools, encryption methods, and best practices for internet of things security. 8. Hiring and management (a) Appointments The Secretary, acting through the Director shall have the authority to— (1) make appointments of scientific, engineering, and professional personnel without regard to the civil service laws as the Secretary, acting through the Director determines necessary for carrying out research and development functions which require the services of specially qualified personnel relating to cybersecurity and quantum information science and technology and such other areas of national research priorities as the Secretary, acting through the Director may determine