Subjects: *COVID-19 pandemic; *SCARCITY; *PRICING
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Subjects: *PRIVATE companies; *HEALTH care industry; *ECONOMIC competition
Subjects: *PRODUCT bundling; *INFORMATION asymmetry; *CONSUMER psychology
Subjects: *PRODUCT lines; *STRATEGIC business units; *AIRLINE industryMARRIOTT International Inc. MARRIOTT International Inc. MARRIOTT International Inc. MAR; RITZ-Carlton Hotel Co. LLC
Subjects: *ECONOMETRICS; *TIME series analysis; *PERFORMANCE evaluation
Subjects: *RESEARCH funding; *QUESTIONNAIRES; *DESCRIPTIVE statisticsSOUTH Korea
Subjects: EAVESDROPPING; WIRETAPPING; INTERFERENCE channels (Telecommunications)
Subjects: *ALGORITHMS; BEAMFORMING; PHASE shifters
Subjects: MILLIMETER waves; MIMO systems; TRACKING algorithms