Ranking by Academic Performance. Tsinghua is ranked 1st in the Asia & Oceania region and 14th globally by the Performance Ranking of Scientific Papers for World Universities with specific fields and subjects, ranked number one globally, including "Chemical Engineering", "Chemistry", "Civil Engineering", "Computer Science", "Electrical Engineering", "Material Science" and "Physics". As of 2021, it ranked 6th globally in "Education", 7th in "Clinical, pre-clinical and Health", 11th in "Business and Economics", 12th in "Computer Science", 13th in "Life Science", 17th in "Engineering and Technology", 18th in "Physical Science", 33th in "Social Science", 37th in "Law", and 40th in "Arts and Humanities" by the Times Higher Education Rankings by Subjects, which are historical strengths for Tsinghua. Since 2015, Tsinghua University has overtaken the Massachusetts Institute of Technology to top the list of Best Global Universities for Engineering published by the U.S. News & World Report and as of 2021, is also ranked number one globally in Chemical Engineering, Computer Science, Engineering, Electrical and Electronic Engineering and Energy and Fuels. As of 2021, the U.S. News & World Report placed "Chemical Engineering", "Chemistry", "Civil Engineering", "Computer Science", "Condensed Matter Physics", "Electrical and Electronic Engineering", "Energy and Fuels", "Engineering", "Environment/Ecology", "Material Science", "Mechanical Engineering", "Nanoscience and Nanotechnology" "Physical Chemistry" and "Physics" at Tsinghua in the global Top 10 universities. In the ARWU's Global Ranking of Academic Subjects 2020, Tsinghua ranks in the world's top five universities in "Telecommunication Engineering", "Instruments Science & Technology", "Civil Engineering", "Chemical Engineering", "Mechanical Engineering", "Nanoscience & Nanotechnology", "Energy Science & Engineering", and "Transportation Science & Technology" and falls within the global top 10 for "Electrical & Electronic Engineering", "Computer Science & Engineering", "Materials Science & Engineering", "Environmental Science & Engineering", and "Water Resources". List of university departments and institutions Department of Electrical Engineering The department of electrical engineering at Tsinghua University plays a pioneer role in state power grid of China. The research focus of the department include following areas. Power System and its Automation: Security, stability, control and marketization of power systems; High Voltage and Insulation Technique: High voltage insulation, over voltage and its protection, electromagnetic compatibility, equipment detection and high voltage measurement; Electric Machines and Electric Apparatus: Large-scale machines, special machines, motor systems in electrical vehicles, machine protection, high voltage switchgear; Power Electronics and Electrical Drive: Basic theory and topology research in power systems and industrial application, flexible AC transmission system, electrical machine drive and control, interface