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Full-Text Articles in Engineering

An Agent-Based Framework For Simulating Socio-Organisational Design Of Large Projects, Ricardo Peculis, Derek Rogers, Peter Campbell Jan 2008

An Agent-Based Framework For Simulating Socio-Organisational Design Of Large Projects, Ricardo Peculis, Derek Rogers, Peter Campbell

SMART Infrastructure Facility - Papers

The success of large projects depends on how people associated in teams and organisations perform their tasks and cooperate to achieve a shared goal. Success depends on an effective socio-organisational design that defines organisational structures; human resources in the form of people's abilities, roles and responsibilities; and establishing processes and contracts that will drive measures of success. Predicting the behaviour of large projects is difficult and the performance of the socio-organisational design is likely to be validated only when it is put in to practice. Simulation offers a way to explore the likely behaviour of social systems without the drawback …


Joint Linear Interleaver Design For Concatenated Zigzag Codes, D S. Lin, S Tong, S Q. Li Jan 2008

Joint Linear Interleaver Design For Concatenated Zigzag Codes, D S. Lin, S Tong, S Q. Li

Faculty of Engineering and Information Sciences - Papers: Part A

The design of a class of well-structured low-density parity-check (LDPC) codes, namely linear interleaver based concatenated zigzag (LICZ) codes, is investigated. With summary distances as the design metric, short LICZ codes with large minimum distances can be constructed. Moreover, an efficient cycle-based method is proposed to compute the minimum distances of LICZ codes. Simulation results show that LICZ codes outperform both CZ codes with random interleavers and LDPC codes by the progressive edge growth algorithm.


Optimal Target Performance For Cost-Effective Seismic Design Of Bridges, M Neaz Sheikh, Frederic Legeron Jan 2008

Optimal Target Performance For Cost-Effective Seismic Design Of Bridges, M Neaz Sheikh, Frederic Legeron

Faculty of Engineering - Papers (Archive)

A systematic approach is proposed for evaluating the cost-effectiveness of existing bridge design codes based on expected lifecycle cost. In the life cycle cost formulation, costs of construction, damage cost, road user cost, as well as discount cost over the design life of the bridge are considered. The optimal performance is selected on the basis of minimum life cycle cost. The performance of a typical two-span bridge designed according to a current code provision for different earthquake ground motion levels is predicted and optimal target performance is selected based on life cycle cost with different assumptions of user cost. It …


Estimation Of Yield Curvature For Direct Displacement-Based Seismic Design Of Rc Columns, M Neaz Sheikh, Hing-Ho Tsang, Nelson Lam Jan 2008

Estimation Of Yield Curvature For Direct Displacement-Based Seismic Design Of Rc Columns, M Neaz Sheikh, Hing-Ho Tsang, Nelson Lam

Faculty of Engineering - Papers (Archive)

Significant research efforts have been devoted in recent years to the development of displacement-based seismic design methodologies, recognizing the shortcomings of traditional, code-specified force-based design procedures. Recent advances in direct displacement-based seismic design of columns rely on the estimates of yield curvature for the determination of seismic design forces to satisfy the specified seismic performance levels. This paper presents simple expressions for estimating the effective yield curvature for normal- and high-strength circular reinforced concrete (RC) columns based on moment-curvature analyses of a large number of column sections. Such expressions can be programmed into the spreadsheet format and can be used …


Design Of Silos For Flow And Strength - The Various Contributors Must Communicate, Peter C. Arnold Jan 2008

Design Of Silos For Flow And Strength - The Various Contributors Must Communicate, Peter C. Arnold

Faculty of Engineering - Papers (Archive)

Too often in the design of silo systems for the storage and handling of bulk solids those involved in the various components of the design process do not communicate. The chemical engineers often have a range of desired outcomes that differ from those of the mechanical engineers and the mechanical and structural engineers are often not aiming for the same range of outcomes. Even if all the designers communicate well the overall result may disappoint if the project manager allows significant (but sometimes subtle) design variations during construction. The result can be a system that does not perform well. Had …


Modelling And Design Of Complete Conveyor Transfers, David B. Hastie, Andrew P. Grima, Peter W. Wypych Jan 2008

Modelling And Design Of Complete Conveyor Transfers, David B. Hastie, Andrew P. Grima, Peter W. Wypych

Faculty of Engineering - Papers (Archive)

This paper presents the chute flow analysis for a granular cohesionless material in a hood and spoon style transfer chute and bench scale testing methods to calculate the coefficient of restitution, particle rotation restraint and the coefficient of friction between particles of granular material. The experimental chute flow investigations were performed on a conveyor transfer research facility located at the University of Wollongong, using high-speed video to capture the granular flow and subsequently analysed with the Image Pro Plus software package. The bench scale tests were analysed to determine the input parameters for the DEM simulations of the trajectories and …


Validated Computer Simulation Modelling For Complete Conveyor Transfer Design, David B. Hastie, Andrew P. Grima, Peter W. Wypych Jan 2008

Validated Computer Simulation Modelling For Complete Conveyor Transfer Design, David B. Hastie, Andrew P. Grima, Peter W. Wypych

Faculty of Engineering - Papers (Archive)

This paper presents the chute flow analysis for a granular cohesionless material in a hood and spoon style transfer chute and bench scale testing methods to calculate the coefficient of restitution, particle rotation restraint and the coefficient of friction between particles of granular material. The experimental chute flow investigations were performed on a conveyor transfer research facility located at the University of Wollongong, using high-speed video to capture the granular flow and subsequently analysed with the Image Pro Plus software package. The bench scale tests were analysed to determine the input parameters for the DEM simulations of the trajectories and …