TJ Mechanical engineering and machinery Business Computer engineering. Computer hardware Consumer behavior. Consumers' preferences. Consumer research. Including consumer profiling Consumer satisfaction Customer services. Customer relations Energy conservation H Social Sciences (General) Higher Education Hospitality industry. Hotels, clubs, restaurants, etc. Food service NA Architecture Power resources Q Science (General) QC Physics RD Surgery Social aspects. Social marketing Supervision and administration. Business management T Technology (General) TH1-9745 Building construction TK Electrical engineering. Electronics Nuclear engineering Technology. Information technology. Internet in higher education