MOTIVATION OF WORK, ORGANIZATIONAL CULTURE, AND ORGANIZATIONAL COMMITMENT TOWARDS WORK PRODUCTIVITY LECTURERS AND EMPLOYEES OF ECONOMICS COLLEGE AAS SURAKARTA (STIE AAS SURAKARTA) MOTIVATION OF WORK, ORGANIZATIONAL CULTURE, AND ORGANIZATIONAL COMMITMENT TOWARDS WORK PRODUCTIVITY LECTURERS AND EMPLOYEES OF ECONOMICS COLLEGE AAS SURAKARTA (STIE AAS SURAKARTA)