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(1 - 20 of 251)
Pages
- Title
- Automated control of microfluidics devices.
- Creator
- Gerstel, Ian., College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
- Abstract/Description
-
In order for microfluidics devices to be marketable, they must be inexpensive and easy to use. Two projects were pursued in this study for this purpose. The first was the design of a chip alignment system for visual feedback, in which a two-layer microfluidic chip was placed under a camera and an image processing and linear algebra program aligned a computer model to it. The system then translated the new locations of air valves and could detect valve activation in a chip filled with food...
Show moreIn order for microfluidics devices to be marketable, they must be inexpensive and easy to use. Two projects were pursued in this study for this purpose. The first was the design of a chip alignment system for visual feedback, in which a two-layer microfluidic chip was placed under a camera and an image processing and linear algebra program aligned a computer model to it. The system then translated the new locations of air valves and could detect valve activation in a chip filled with food coloring. The second was the design of a cheap, portable system to detect phosphorus in water. This system could not be completed due to time constraints, but the methods were detailed, and design ideas were laid out for future work.
Show less - Date Issued
- 2010
- PURL
- http://purl.flvc.org/FAU/3158764
- Subject Headings
- Microfluidics, Design, Microelectromagnetical systems, Design, Fluidic devices, Design, Micromechanics
- Format
- Document (PDF)
- Title
- Automation of the S.H.I.E.L.D. methodology for system hazard analysis and resilient design.
- Creator
- Marcus, Anthony M., Cardei, Ionut E., Alsenas, Gabriel, Graduate College
- Date Issued
- 2013-04-12
- PURL
- http://purl.flvc.org/fcla/dt/3361327
- Subject Headings
- System analysis, System design
- Format
- Document (PDF)
- Title
- ANALYSIS AND COMPARISON OF THE RELEASE WHEN DONE AND RELEASE ON REQUEST BUS ARBITRATION METHODS (MAKOV CHAIN, MULTIPROCESSOR, BUS MASTER).
- Creator
- SINIBALDI, JOHN CLAUDE., Florida Atlantic University, Marcovitz, Alan B., College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
- Abstract/Description
-
A comparative analysis of two methods of bus arbitration used by a multiprocessing system with a single main bus is performed. The major performance parameters are delay time and the average number of active processors, called processing power. The bus arbitration methods are described using state and timing diagrams. Multiprocessor systems using these methods of arbitration are then modeled using Markov chains to enable the formulation of processing power. From processing power other...
Show moreA comparative analysis of two methods of bus arbitration used by a multiprocessing system with a single main bus is performed. The major performance parameters are delay time and the average number of active processors, called processing power. The bus arbitration methods are described using state and timing diagrams. Multiprocessor systems using these methods of arbitration are then modeled using Markov chains to enable the formulation of processing power. From processing power other performance parameters can be derived. A comparison is then made among the two bus arbitration methods based on the analytical results where processors access the bus at an equal rate. Simulations of multiprocessor systems using either of the two arbitration methods were performed to validate the analytical models for equal bus request rates. Simulations are also performed of a system of processors using the main bus at unequal rates.
Show less - Date Issued
- 1986
- PURL
- http://purl.flvc.org/fcla/dt/14350
- Subject Headings
- Multiprocessors, System design
- Format
- Document (PDF)
- Title
- Reexamining currency design for the new millennium.
- Creator
- Arteaga, Elio L., Florida Atlantic University, Dorothy F. Schmidt College of Arts and Letters, Department of Visual Arts and Art History
- Abstract/Description
-
The design of paper currency has attracted attention recently with the introduction of the Euro and American currency design modifications. New designs provide deterrence against counterfeiting, and, in some cases, accommodate the special needs of visually challenged individuals. Often aesthetics are given lower priority or ignored completely. This thesis is an examination of the author's motivations, inspirations, goals and design decisions involved in creating a set of paper currency bills...
Show moreThe design of paper currency has attracted attention recently with the introduction of the Euro and American currency design modifications. New designs provide deterrence against counterfeiting, and, in some cases, accommodate the special needs of visually challenged individuals. Often aesthetics are given lower priority or ignored completely. This thesis is an examination of the author's motivations, inspirations, goals and design decisions involved in creating a set of paper currency bills that fit the high-tech, fast-paced and culturally diverse society that is twenty-first century America. The author incorporates a deep visual texture with American symbols and historical events illustrated by shape and shading alone---no color or line. Semiotics and visual metaphors are applied to convey meaning to abstract or complex concepts. Counterfeit deterrence features and features for use by visually challenged individuals are integrated into the design, thus producing a system of currency that is both functional and aesthetic.
Show less - Date Issued
- 2003
- PURL
- http://purl.flvc.org/fcla/dt/13090
- Subject Headings
- Design and Decorative Arts
- Format
- Document (PDF)
- Title
- An investigation of a proper pairwise balanced design on 30 points.
- Creator
- Berg, Melissa Mary-Jane., Florida Atlantic University, Mullin, Ronald C., Hoffman, Frederick
- Abstract/Description
-
In this paper, we assume a proper pairwise balanced design on 30 points exists. We then get some results that reveal what the largest line size may be and the maximum number of lines of this size. Using these results, we look at one of two cases. We investigate the structure of the linear spaces in this case having no lines of sizes 2, 3, 6 and 30 and rule out many possibilities in order to get a minimum number of possible solutions.
- Date Issued
- 2000
- PURL
- http://purl.flvc.org/fcla/dt/12710
- Subject Headings
- Vector spaces, Block designs
- Format
- Document (PDF)
- Title
- Campus RainWorks challenge: a green infrastructure design challenge.
- Creator
- Fermin, Christina, Graduate College
- Date Issued
- 2013-04-12
- PURL
- http://purl.flvc.org/fcla/dt/3361297
- Subject Headings
- Urban runoff--Management, Stormwater infiltration, Green design, Sustainable design
- Format
- Document (PDF)
- Title
- An Algorithmic Approach to Tran Van Trung's Basic Recursive Construction of t-Designs.
- Creator
- Lopez, Oscar A., Magliveras, Spyros S., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Mathematical Sciences
- Abstract/Description
-
It was not until the 20th century that combinatorial design theory was studied as a formal subject. This field has many applications, for example in statistical experimental design, coding theory, authentication codes, and cryptography. Major approaches to the problem of discovering new t-designs rely on (i) the construction of large sets of t designs, (ii) using prescribed automorphism groups, (iii) recursive construction methods. In 2017 and 2018, Tran Van Trung introduced new recursive...
Show moreIt was not until the 20th century that combinatorial design theory was studied as a formal subject. This field has many applications, for example in statistical experimental design, coding theory, authentication codes, and cryptography. Major approaches to the problem of discovering new t-designs rely on (i) the construction of large sets of t designs, (ii) using prescribed automorphism groups, (iii) recursive construction methods. In 2017 and 2018, Tran Van Trung introduced new recursive techniques to construct t – (v, k, λ) designs. These methods are of purely combinatorial nature and require using "ingredient" t-designs or resolutions whose parameters satisfy a system of non-linear equations. Even after restricting the range of parameters in this new method, the task is computationally intractable. In this work, we enhance Tran Van Trung's "Basic Construction" by a robust and efficient hybrid computational apparatus which enables us to construct hundreds of thousands of new t – (v, k, Λ) designs from previously known ingredient designs. Towards the end of the dissertation we also create a new family of 2-resolutions, which will be infinite if there are infinitely many Sophie Germain primes.
Show less - Date Issued
- 2019
- PURL
- http://purl.flvc.org/fau/fd/FA00013233
- Subject Headings
- Combinatorial designs and configurations, Algorithms, t-designs
- Format
- Document (PDF)
- Title
- Design of micromixer and microfludic control system.
- Creator
- Li, Lin, Tsai, Chi-Tay, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
- Abstract/Description
-
Micromixer is one of the most significant components of microfluidic systems, which manifest essential applications in the field of chemistry and biochemistry. Achieving complete mixing performance at the shortest micro channel length is essential for a successful micromixer design. We have developed five novel micromixers which have advantages of high efficiency, simple fabrication, easy integration and ease for mass production. The design principle is based on the concept of splitting...
Show moreMicromixer is one of the most significant components of microfluidic systems, which manifest essential applications in the field of chemistry and biochemistry. Achieving complete mixing performance at the shortest micro channel length is essential for a successful micromixer design. We have developed five novel micromixers which have advantages of high efficiency, simple fabrication, easy integration and ease for mass production. The design principle is based on the concept of splitting-recombination and chaotic advection. Numerical models of these micromixers are developed to characterize the mixing performance. Experiments are also carried out to fabricate the micromixers and evaluate the mixing performance. Numerical simulation for different parameters such as fluids properties, inlet velocities and microchannel cross sectional sizes are also conducted to investigate their effects on the mixing performance. The results show that critical inlet velocities can be predicted for normal fluid flow in the micromixers. When the inlet velocity is smaller than the critical value, the fluids mixing is dominated by mechanism of splitting-recombination, otherwise, it is dominated by chaotic advection. If the micromixer can tolerate higher inlet velocity, the complete mixing length can be further reduced. Our simulation results will provide valuable information for engineers to design a micromixer by choosing appropriate geometry to boost mixing performance and broaden implicational range to fit their specific needs. Accurate and complicated fluidic control, such as flow mixing or reaction, solution preparation, large scale combination of different reagents is also important for bio-application of microfluidics. A proposal microfluidic system is capable of creating 1024 kinds of combination mixtures. The system is composed of a high density integrated microfluidic chip and control system. The high density microfluidic chip, which is simply fabricated through soft lithography technique, contains a pair of 32 flow channels that can be specifically addressed by each 10 actuation channels based on principle of multiplexor in electronic circuits. The corresponding hardware and software compose the control system, which can be easy fabricated and modified, especially for prototype machine developing. Moreover, the control system has general application. Experiments are conducted to verify the feasibility of this microfluidic system for multi-optional solution combination.
Show less - Date Issued
- 2013
- PURL
- http://purl.flvc.org/fau/fd/FA0004033
- Subject Headings
- Flow visualization, Fluidic devices -- Design, Microelectromagnetical systems, Microfluidics -- Design
- Format
- Document (PDF)
- Title
- Remote Labs: A Method to Implement a Portable Logic Design Laboratory Infrastructure and to Provide Access to Modern Test Equipment.
- Creator
- Weinthal, Charles Perry, Petrie, Maria Mercedes Larrondo, Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
- Abstract/Description
-
This Thesis explores building low cost and reliable portable laboratory infrastructure platform for Logic Design, methods for allowing access to modern test equipment via the internet, and issues related to academic integrity. A comprehensive engineering education, per ABET, requires an equal emphasis on both lecture and laboratory components. The laboratory experience builds and establishes a foundation of skills and experiences that the student cannot obtain through any other means. The...
Show moreThis Thesis explores building low cost and reliable portable laboratory infrastructure platform for Logic Design, methods for allowing access to modern test equipment via the internet, and issues related to academic integrity. A comprehensive engineering education, per ABET, requires an equal emphasis on both lecture and laboratory components. The laboratory experience builds and establishes a foundation of skills and experiences that the student cannot obtain through any other means. The laboratory must use modern, pertinent methods and techniques including the use of appropriate tools. This is especially true when it comes to test equipment. Engineering students require and deserve training on and access to modern test equipment in order to obtain better career opportunities. However, providing access to modern and relevant labs requires a significant budget commitment. One way to extend current budgets is to adopt the growing concept of “remote labs.” This approach allows higher utilization of existing (and costly) equipment, it improves an institution’s Return on Investment (ROI), and also can be used to meet the needs of students’ complicated schedules, especially in the case of a “commuter campus,” where a majority of students live off campus. By developing remote labs, both the institution and the students benefit: Institutions increase equipment utilization, and utilize space, budgets and support personnel more efficiently. Students can access a lab whenever and wherever they have internet access. Finally, academic integrity must be protected to ensure the potential of remote laboratories in education. This Thesis presents a design and implementation plan for a low cost Logic Design laboratory infrastructure built and tested over 3 years by over 1,500 Logic Design students; a design and implementation of the infrastructure to include the ability to measure using remote test equipment; and the design of a case (3d printed or laser cut) to encapsulate a USB enabled micro-controller; and a scheme to ensure the academic integrity is maintained for in-person, hybrid and fully online classes.
Show less - Date Issued
- 2018
- PURL
- http://purl.flvc.org/fau/fd/FA00013177
- Subject Headings
- Logic design, Engineering laboratories, Logic design--Computer-assisted instruction
- Format
- Document (PDF)
- Title
- 5th Wave: The Fault of Women.
- Creator
- Koppisch, Patricia, Cunningham, Stephanie, Florida Atlantic University, Department of Visual Arts and Art History, Dorothy F. Schmidt College of Arts and Letters
- Abstract/Description
-
As a reaction to the demand for women’s suffrage and equal rights in the late-1800s, American antifeminism emerged. In the article by Janet Saltzman Chafetz and Anthony Gary Dworkin, “In the Face of Threat: Organized Antifeminism in Comparative Perspective,” the authors concluded that the growth of a countermovement is contingent upon the success and size of the movement it opposes.1 This conclusion is applied to the actions, counter-actions and subsequent growth of both antifeminism and...
Show moreAs a reaction to the demand for women’s suffrage and equal rights in the late-1800s, American antifeminism emerged. In the article by Janet Saltzman Chafetz and Anthony Gary Dworkin, “In the Face of Threat: Organized Antifeminism in Comparative Perspective,” the authors concluded that the growth of a countermovement is contingent upon the success and size of the movement it opposes.1 This conclusion is applied to the actions, counter-actions and subsequent growth of both antifeminism and feminism. However, as feminism succeeds with small advancements in equality, antifeminism escalates its oppositional strength by creating accusations against women, using labels based on gender stereotypes and initiatives that incite divisive discourse in the pursuit of equal rights for all human beings. Graphic design is a catalyst for both antifeminism and feminism visual language. To find inspiration for my exhibition, I examined one-hundred years of design used by both movements. Based by my research, the exhibition, “5th Wave: The Fault of Women,” navigates through the growth and history of antifeminism and visually examines antifeminist labels and initiatives and the culmination of these techniques used during the fifth wave of antifeminism. The exhibition, “5th Wave: The Fault of Women,” exposes and challenges the efforts of the fifth wave of antifeminism in an effort to evoke an understanding of the importance of feminism’s fight for equality and the betterment of all human beings. Using research and design to expose antifeminism’s growing labels and initiative, feminism can combat the techniques used to punish those who challenge patriarchy and heteronormativity.
Show less - Date Issued
- 2020
- PURL
- http://purl.flvc.org/fau/fd/FA00013596
- Subject Headings
- Graphic design, Anti-feminism
- Format
- Document (PDF)
- Title
- A 16 BIT TTL MINICOMPUTER FOR TELEPROCESSING.
- Creator
- APPEL, WILLIAM DALE., Florida Atlantic University, Marcovitz, Alan B.
- Abstract/Description
-
A 16 bit non-bussed minicomputer design exhibits significant performance advantages over the popular 8080 microcomputer. The design and operation of this device is discussed. Microcoding is employed only where it is a direct replacement for a needed combinatorial function and microcode formats are kept as simple as possible. Since it is anticipated that non-direct addressing will be used extensively in the eventual application of teleprocessing, special hardware is committed to this task. The...
Show moreA 16 bit non-bussed minicomputer design exhibits significant performance advantages over the popular 8080 microcomputer. The design and operation of this device is discussed. Microcoding is employed only where it is a direct replacement for a needed combinatorial function and microcode formats are kept as simple as possible. Since it is anticipated that non-direct addressing will be used extensively in the eventual application of teleprocessing, special hardware is committed to this task. The result is a significant speed advantage over typical address calculating schemes. Additional circuitry is provided to allow rapid subroutine entry, exit, and parameter fetching.
Show less - Date Issued
- 1978
- PURL
- http://purl.flvc.org/fcla/dt/13926
- Subject Headings
- Minicomputers--Design and construction
- Format
- Document (PDF)
- Title
- Design of optimal control surfaces for underwater vehicles.
- Creator
- Jenkin, Alan Paul., Florida Atlantic University, Merry, Stephanie L.
- Abstract/Description
-
This thesis presents a method for determining the optimal size and position of stabilizing fins and control surfaces for underwater vehicles. An interactive computer program predicts performance characteristics from calculated vehicle hydrodynamic coefficients. This program merges with a dynamic simulation that utilizes the characteristic coefficients of the design vehicle configuration. Example designs illustrate the procedure and general guidelines for the design of control surfaces....
Show moreThis thesis presents a method for determining the optimal size and position of stabilizing fins and control surfaces for underwater vehicles. An interactive computer program predicts performance characteristics from calculated vehicle hydrodynamic coefficients. This program merges with a dynamic simulation that utilizes the characteristic coefficients of the design vehicle configuration. Example designs illustrate the procedure and general guidelines for the design of control surfaces. Simulated steady state maneuvers illustrate the performance criteria and confirm the application of the design and simulation software package.
Show less - Date Issued
- 1989
- PURL
- http://purl.flvc.org/fcla/dt/14533
- Subject Headings
- Submersibles--Design and construction
- Format
- Document (PDF)
- Title
- Electronic control system for an electro-hydraulic winch.
- Creator
- Vulih, S., Clayton, David L., Harbor Branch Oceanographic Institute
- Date Issued
- 1981
- PURL
- http://purl.flvc.org/FCLA/DT/3183667
- Subject Headings
- Electronic control, Submersibles--Design and construction
- Format
- Document (PDF)
- Title
- Developing a high efficiency ring thruster for underwater vehicles.
- Creator
- Holt, John K., Harbor Branch Oceanographic Institute
- Date Issued
- 1995
- PURL
- http://purl.flvc.org/FCLA/DT/3338516
- Subject Headings
- Underwater vehicles, Submersibles--Design and construction
- Format
- Document (PDF)
- Title
- Low cost operation and system design for a submersible tender.
- Creator
- Atwell, J. T., Heil, O. F., Harbor Branch Oceanographic Institute
- Date Issued
- 1974
- PURL
- http://purl.flvc.org/FCLA/DT/3338490
- Subject Headings
- Submersibles, Submersibles--Design and construction
- Format
- Document (PDF)
- Title
- Design and construction of an aluminum A-frame for submersible launch and recovery.
- Creator
- Clark, A. M., Harbor Branch Oceanographic Institute
- Date Issued
- 1986
- PURL
- http://purl.flvc.org/fau/fd/FA00007490
- Subject Headings
- Submersibles, Submersibles--Design and construction
- Format
- Document (PDF)
- Title
- Development of a six degree of freedom buoy design and analysis program with validating data.
- Creator
- Venezia, William A., Clark, A. M., Schmitt, K. F., Harbor Branch Oceanographic Institute
- Date Issued
- 1993
- PURL
- http://purl.flvc.org/FCLA/DT/3351957
- Subject Headings
- Buoys, Buoys--Design and construction, Analysis
- Format
- Document (PDF)
- Title
- Human powered submarine propulsion.
- Creator
- Nunes, Christopher, An, Edgar
- Date Issued
- 2013-04-05
- PURL
- http://purl.flvc.org/fcla/dt/3361161
- Subject Headings
- Submersibles, Submarines--Design and construction, Propellers
- Format
- Document (PDF)
- Title
- Anisotropic physical properties of SC-15 epoxy reinforced with magnetic nanofillers under uniform magnetic field.
- Creator
- Malkina, Olga, Charles E. Schmidt College of Science, Department of Physics
- Abstract/Description
-
SC-15 epoxy is used in many industrial applications and it is well known that the mechanical and viscoelastic properties of epoxy can be signicantly enhanced when reinforced with nanofillers. In this work, SC-15 epoxy is reinforced by loading with magnetically-active nanofillers and cured in a modest magnetic field. Because of the signicant magnetic response of the nanofillers, this is a low cost and relatively easy technique for imposing a strong magnetic anisotropy to the system without the...
Show moreSC-15 epoxy is used in many industrial applications and it is well known that the mechanical and viscoelastic properties of epoxy can be signicantly enhanced when reinforced with nanofillers. In this work, SC-15 epoxy is reinforced by loading with magnetically-active nanofillers and cured in a modest magnetic field. Because of the signicant magnetic response of the nanofillers, this is a low cost and relatively easy technique for imposing a strong magnetic anisotropy to the system without the need of a superconducting magnet. It is also found that this method is an effective way of enhancing the mechanical properties of epoxy. Three systems were prepared and studied. The first is a dilute system of various concentrations of Fe2O3 nanoparticles in SC-15 epoxy. The second system is a combination of Fe2O3 nanoparticles and chemically-functionalized single-walled carbon nanotubes (SWCNT(COOH)s) in SC-15 epoxy. The third is a dilute system of SWCNT(COOH)s decorated with Fe3O4 particles t hrough a sonochemical oxidation process in SC-15 epoxy. Samples have an initial cure of 6 hrs in a magnetic led of 10 kOe followed by an additional 24 hours of post curing at room temperature. These are compared to the control samples that do not have initial field curing. Tensile and compressive stress-strain analysis of the prepared systems shows that mechanical properties such as tensile strength, tensile modulus and compressive strength are enhanced with the inclusion of these nanofillers. It is also found that there is an anisotropic enhancement of these properties with respect to the imposed curing field. An interesting phenomenon is observed with the increase in modulus of toughness and fracture strain with nanotube inclusion., These parameters are drastically enhanced after curing the systems in a magnetic field. While there is a modest shift in glass transition temperature during viscoelastic analysis, the thermal stability of the created systems is not compromised. Results of these mechanical enhancements will be compared with other nanoloading techniques from literature.
Show less - Date Issued
- 2011
- PURL
- http://purl.flvc.org/FAU/3332722
- Subject Headings
- Nanostructured materials, Epoxy resins, Composite materials, Design
- Format
- Document (PDF)
- Title
- A comparison of non-traditional instersection designs using microscopic simulation.
- Creator
- Chery, Steve, College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
- Abstract/Description
-
In light of the growing traffic demand and the futility of the conventional solutions, many states have been considering alternative intersection designs. Researchers have demonstrated the benefits of several unconventional intersection designs and their implementation at different sites throughout the United States and abroad have delivered significant improvement in traffic compared to the conventional intersections. A signalized and un-signalized roundabout, a Continuous Flow Intersection,...
Show moreIn light of the growing traffic demand and the futility of the conventional solutions, many states have been considering alternative intersection designs. Researchers have demonstrated the benefits of several unconventional intersection designs and their implementation at different sites throughout the United States and abroad have delivered significant improvement in traffic compared to the conventional intersections. A signalized and un-signalized roundabout, a Continuous Flow Intersection, and a Parallel Flow Intersection have been evaluated and compared in this research as viable alternatives to the traditional single intersection. Using micro-simulation platforms, AIMSUN 6.0 and VISSIM 5.10, models of each intersection are evaluated for low, medium, and high entrance volumes. The analysis revealed that the Roundabout performs better at low entering volumes while the Continuous flow yields better results at high volumes.
Show less - Date Issued
- 2010
- PURL
- http://purl.flvc.org/FAU/1927863
- Subject Headings
- Traffic engineering, Streets, Design, City planning
- Format
- Document (PDF)
