U

U.S

• Research on the Science and Technology Enterprise: Statistics and Surveys - R&D, U.S. S&T Competitiveness, STEM Education, S&T Workforce
• U.S. Science Support Program associated with the International Ocean Discovery Program (USSSP-IODP)

Ubiquitous

• National Robotics Initiative 2.0: Ubiquitous Collaborative Robots (NRI-2.0)

Undergraduate

• Facilitating Research at Primarily Undergraduate Institutions:
• Historically Black Colleges and Universities Undergraduate Program (HBCU-UP)
• Improving Undergraduate STEM Education: Education and Human Resources (IUSE: EHR)
• Improving Undergraduate STEM Education: Hispanic-Serving Institutions (HSI Program)
• Improving Undergraduate STEM Education: Pathways into Geoscience (IUSE: GEOPATHS)
• Research Coordination Networks in Undergraduate Biology Education (RCN-UBE)

Undergraduates

• Chemistry Research Experiences for Undergraduates (REU)
• Research Experiences for Undergraduates (REU)

Underrepresented

• Inclusion across the Nation of Communities of Learners of Underrepresented Discoverers in Engineering and Science (NSF INCLUDES) (NSF INCLUDES)

Understanding

• Integrative Strategies for Understanding Neural and Cognitive Systems (NCS)
• Opportunities for Promoting Understanding through Synthesis (OPUS)

United

• United States-Israel Collaboration in Computer Science (USICCS)

Universities

• Historically Black Colleges and Universities Undergraduate Program (HBCU-UP)
• Tribal Colleges and Universities Program (TCUP)

UNOLS

• Management of UNOLS Marine Technician Pool

US

• US Ignite:
• Wireless Innovation between Finland and US (WiFiUS)

US-EU

• US-EU Internet Core & Edge Technologies (ICE-T)

US-Japan

• US-Japan Big Data and Disaster Research (BDD)

Use

• Geomorphology and Land Use Dynamics
• Materials Use: Science, Engineering, and Society (MUSES)

USICCS

• United States-Israel Collaboration in Computer Science (USICCS)

USSSP-IODP

• U.S. Science Support Program associated with the International Ocean Discovery Program (USSSP-IODP)