Management Imperatives for the Year 2000
Traditional management styles and organizational structures must change radically if business is to face successfully the competitive challenges of the next century. Ways must be found to unlock the creative potential which is manifest at the middle and lower levels of our present bureaucratic organizations. Progressive companies, often in joint cooperation with unions, are already pointing the way to the future by encouraging broader involvement in decisions once throught to be vested only among those at the higher levels. Technology can be a driving force for change. The requirement that large numbers of employees be clustered in offices and factories will no longer be appropriate when one projects the implications of the microprocessor revolution. Much of what we know of as "work" can be performed in the home or in remote locations, thus resulting in decentralized organizational structures and a change in the nature of work in community life and in society as a whole.
Management Motivation in the XXI Century
People’s needs, values, and expectations change with the conditions around them. What will remain crucial at all times is that “managing” will always be a human activity and thus ultimately influenced by the interplay of human forces.
Experimental study on bond behavior between high-strength grout and deformed steel bars
Abstract Engineers use high-strength grout to connect precast concrete members for its low shrinkage and good fluidity. This paper designed 87 central pull-out specimens using the control variable method to investigate the influence of factors on the rebar-grout bond property such as compressive strength, steel grade, bar diameter, transverse stirrups, and bond length. The test result showed that improving grout compressive strength (85.8 MPa–122.7 MPa) cannot improve the bond strength, which was different from the previous conclusions of concrete pull-out tests. Simplified formulas were presented for calculating the characteristic values of bond strength, residual strength, peak slip, and relative slip of load-holding platform based on parameter analysis. Then, a constitutive model was proposed to predict the full-range bond stress-slip curve of high-strength grout and steel bar specimens from bearing to failure. Finally, FEA models were established to evaluate the applicability and accuracy of the constitutive model.