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Articles 1 - 18 of 18
Full-Text Articles in Engineering
Characterization Of Serial Links At 5.5gbps On Fr4 Backplanes, Vittorio Ricchiuti, Antonio Orlandi, James L. Drewniak, Francesco De Paulis
Characterization Of Serial Links At 5.5gbps On Fr4 Backplanes, Vittorio Ricchiuti, Antonio Orlandi, James L. Drewniak, Francesco De Paulis
Electrical and Computer Engineering Faculty Research & Creative Works
Nowdays the fast and increased demand for bandwidth in the telecommunication world translates into the design of complex boards exchanging data at high bit rate in reduced design cycle. Sometimes it is impossible to spent time in setting pre-layout simulations, because they are not compatible with the design time schedule. In this scenario it is better to design the boards using experience and then make simulations in conjunction with measurements, using customized numerical tools which don't need complex models.
High-Level, Product Type-Specific Programmatic Operations For Streamlining Associative Computer-Aided Design, Nathan W. Scott
High-Level, Product Type-Specific Programmatic Operations For Streamlining Associative Computer-Aided Design, Nathan W. Scott
Theses and Dissertations
Research in the field of Computer Aided Design (CAD) has long focused on reducing the time and effort required of engineers to define three dimensional digital product models. Parametric, feature-based modeling with inter-part associativity allows complex assembly designs to be defined and re-defined while maintaining the vital part-to-part interface relationships. The top-down modeling method which uses assembly level control structures to drive child level geometry has proved valuable in maintaining these interfaces. Creating robust parametric models like these, however, is very time consuming especially since there can be hundreds of features and thousands of mathematical expressions to create. Even if …
Optimization Constrained Cad Framework With Iso-Performing Design Generator, Kelly Eric Bowman
Optimization Constrained Cad Framework With Iso-Performing Design Generator, Kelly Eric Bowman
Theses and Dissertations
Design decisions have a large impact early in the design process. Optimization methods can help engineers improve their early decision making, however, design problems are often ill-posed for optimization at this early stage. This thesis develops engineering methods to use optimization during embodiment design, despite these difficulties. One common difficulty in designing mechanical systems is in handling the effects that design changes in one subsystem have on another. This is made more difficult in early engineering design, when design information is preliminary. Increased efforts have been made to use numerical optimization methods in early engineering design – because of the …
Differential Evolution Particle Swarm Optimization For Digital Filter Design, Bipul Luitel, Ganesh K. Venayagamoorthy
Differential Evolution Particle Swarm Optimization For Digital Filter Design, Bipul Luitel, Ganesh K. Venayagamoorthy
Electrical and Computer Engineering Faculty Research & Creative Works
In this paper, swarm and evolutionary algorithms have been applied for the design of digital filters. Particle swarm optimization (PSO) and differential evolution particle swarm optimization (DEPSO) have been used here for the design of linear phase finite impulse response (FIR) filters. Two different fitness functions have been studied and experimented, each having its own significance. The first study considers a fitness function based on the passband and stopband ripple, while the second study considers a fitness function based on the mean squared error between the actual and the ideal filter response. DEPSO seems to be promising tool for FIR …
Optimization Model For National Water Master Planning: Design And Documentation, Richard C. Peralta
Optimization Model For National Water Master Planning: Design And Documentation, Richard C. Peralta
Civil and Environmental Engineering Faculty Publications
Physical distribution system and Balancing and Allocation and Transfer modules descriptors.
Optimizing Dynamic Logic Realizations For Partial Reconfiguration Of Field Programmable Gate Arrays, Matthew Parris
Optimizing Dynamic Logic Realizations For Partial Reconfiguration Of Field Programmable Gate Arrays, Matthew Parris
Electronic Theses and Dissertations
Many digital logic applications can take advantage of the reconfiguration capability of Field Programmable Gate Arrays (FPGAs) to dynamically patch design flaws, recover from faults, or time-multiplex between functions. Partial reconfiguration is the process by which a user modifies one or more modules residing on the FPGA device independently of the others. Partial Reconfiguration reduces the granularity of reconfiguration to be a set of columns or rectangular region of the device. Decreasing the granularity of reconfiguration results in reduced configuration filesizes and, thus, reduced configuration times. When compared to one bitstream of a non-partial reconfiguration implementation, smaller modules resulting in …
On Providing Engineering Students With Culturally-Appropriate Design Experiences In Developing Countries, Thomas J. Thompson, Lawrence D. Zavodney
On Providing Engineering Students With Culturally-Appropriate Design Experiences In Developing Countries, Thomas J. Thompson, Lawrence D. Zavodney
Engineering and Computer Science Faculty Publications
Academic institutions are encouraged to instill "the impact of engineering solutions in a global and societal context." This paper summarizes the structural, planning, and logistical aspects of offering senior-level capstone and underclass extra-curricular design projects targeted for developing countries. These projects engage the students in year-long design and fabrication, and culminate in taking students to foreign soil for delivery and installation. The necessary infrastructure and culture at the academic institution, relationships with appropriate intermediaries, and the role of a receptive national host that needs engineering services are identified. The goal is to continue an on-going collaborative relationship that takes students …
Greenometer-7: A Tool To Assess The Sustainability Of A Building's Life Cylce At The Conceptual Design Phase, Muhammad Musa Mer'eb
Greenometer-7: A Tool To Assess The Sustainability Of A Building's Life Cylce At The Conceptual Design Phase, Muhammad Musa Mer'eb
ETD Archive
This study presents a tool that has been developed to measure and subsequently improve the sustainability performance of a building over its entire life-cycle while still at the conceptual design stage. This forecasting tool is called GREENOMETER-7. GREENOMETER-7 is a LCA tool and it evaluates the projected building at two levels: micro- and macro-assessment. The micro-assessment level provides in-depth analysis of the building products, components, and operations however, the macro-assessment level measures the sustainability performance of the building as a whole and covers areas that are not applicable at the product or component level. Both levels consist of categories and …
An Agent-Based Framework For Simulating Socio-Organisational Design Of Large Projects, Ricardo Peculis, Derek Rogers, Peter Campbell
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
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.
Validated Computer Simulation Modelling For Complete Conveyor Transfer Design, David B. Hastie, Andrew P. Grima, Peter W. Wypych
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 …
Optimal Target Performance For Cost-Effective Seismic Design Of Bridges, M Neaz Sheikh, Frederic Legeron
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
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
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
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 …
On Providing Engineering Students With Ministry And Culturally-Appropriate Design Experiences In Developing Countries, Lawrence D. Zavodney, Thomas J. Thompson, Ray Hutchison
On Providing Engineering Students With Ministry And Culturally-Appropriate Design Experiences In Developing Countries, Lawrence D. Zavodney, Thomas J. Thompson, Ray Hutchison
Engineering and Computer Science Faculty Publications
Academic institutions are encouraged to instill "the impact of engineering solutions in a global and societal context." This paper summarizes the structural, planning, and logistical aspects of offering senior-level capstone and underclass extra-curricular design projects targeted for developing countries. These projects engage the students in year-long design and fabrication, and culminate in taking students to foreign soil for delivery and installation. The necessary infrastructure and culture at the academic institution, relationships with appropriate intermediaries, and the role of a receptive national host that needs engineering services are identified. The goal is to continue an on-going collaborative relationship that takes students …
Join The Mission, Design A Patch, Nathan Mentzer, Fay Mentzer, Krista Jones
Join The Mission, Design A Patch, Nathan Mentzer, Fay Mentzer, Krista Jones
Publications
The article presents a classroom activity designed for third grade and up that requires students to design their own mission patch. The activity references the patches developed and designed by the U.S. National Aeronautics & Space Administration. Moreover, the article discusses the design of the activity, the available resources, the evaluation process and interdisciplinary connections.
Design Activity: Students Designing Their Own Video Games, Steve Shumway
Design Activity: Students Designing Their Own Video Games, Steve Shumway
Publications
The article presents a school activity helping students to design their own computer video games. In the past, advanced programming using Java or C++ was used to design video games. At present, there are many free, easy-to-use software programs available to help elementary-age children create their own video games. The article suggests that teachers download a free version of this software and begin the tutorial.