TK Electrical engineering. Electronics Nuclear engineering 208 human 126 History of engineering and technology 105 Technology: general issues 102 Humans 98 female 79 male 74 Article 72 Research & information: general 65 adult 59 controlled study 57 TA Engineering (General). Civil engineering (General) 55 TJ Mechanical engineering and machinery 55 Female 49 article 47 Male 41 QA Mathematics 39 History of engineering & technology 30 Mathematics & science 29 QC Physics 29 QA75 Electronic computers. Computer science 28 Adult 26 Machine learning 26 major clinical study 26 middle aged 26 Forecasting 25 aged 25 procedures 25 Learning systems 24 Controllers 23