Digital Commons Network^™

Sensors To Monitor Cfrp/Concrete Bond In Beams Using Electrochemical Impedance Spectroscopy, Sangdo Hong, Ronald S. Harichandran

Civil Engineering Faculty Publications

The use of inexpensive electrochemical impedance spectroscopy based sensor technology for nondestructive evaluation (NDE) of bond degradation between external carbon fiber-reinforced polymer (CFRP) reinforcement and concrete is examined. Copper tape on the surface of the CFRP sheet, stainless steel wire embedded in the concrete, and reinforcing bars were used as the sensing elements. Laboratory experiments were designed to test the capability of the sensors to detect the debonding of the CFRP from the concrete and to study the effect of short-term (humidity and temperature fluctuations) and long-term (freeze-thaw and wet-dry exposure and rebar corrosion) environmental conditions on the measurements. The …

Construct Ireland - Lime-Hemp - A Potential Solution To A Concrete Problem, Joseph Little

Articles

This article is intended to act as an exploration and provocation. Why do we build the way we do, what effect does that have? Could we for instance, design and specify buildings that actually benefit the Environment rather than burden and pollute it as currently. Is it possible that the construction of a house could absorb CO₂ thereby transforming new housing estates or apartment buildings into giant absorbers of carbon dioxide? Imagine Ireland being able to count commercial constructions or new housing among its ‘carbon sinks’, in place of Siberian forests or the carbon credits that the Government will …

Power System Fault Detection Using Conductor Dynamics, Jeff Dicharry

University of New Orleans Theses and Dissertations

Power system fault detection is conventionally achieved using current and potential measurements. An alternate and unconventional form of protective relaying is feasible using rigid bus conductor motion as the means of detection. The research presented focuses on the detection of power system faults using visual displacement of conductor spans. Substation rigid bus conductor motion is modeled using dual spring-mass systems for accurate representation of conductor response to electromagnetic forces generated during system faults. Bundled rigid conductors have advantages including detection independent of system load currents and improved ability to detect polyphase and single phase faults. The dynamic motion of the …

The Application Of Advanced Solid Modelling Techniques To The Design Of Precision Air Handling Units For Manufacture, Senan Moynihan

Masters

This thesis investigates the application of ActiveX technology to customise mid range solid modelling software, with a view to exploring the benefits small to medium sized manufacturing companies can experience from its successful implementation. A custom application intended to automate solid modelling software was developed that optimises the product design process and also generates the necessary manufacturing information, including working drawings, for precision air handling units. This was successfully accomplished through research and by integrating Computer Aided Design (CAD) with a custom application using ActiveX technology. A variety of CAD products and associated technologies i.e. solid modelling kernels, were researched …

Inst7150 - Advanced Topics In Learning Object Design And Reuse, Fall 2005, David Wiley

Instructional Technology & Learning Sciences - OCW

This course is designed to help you understand and apply advanced topics in the design, creation, and reuse of learning objects. The course is structured around a practical, hands-on project using learning objects, intermingled with readings and discussion on a variety of topics.

The Impact Of Cultural And Religious Values On Television And Newspaper Advertising Content And Appeal: A Cross-Cultural Study Of The United States And The Arab World, Morris A. Kalliny

Theses and Dissertations - UTB/UTPA

Standardization versus adaptation of advertising has been a subject of great controversy that has been debated for more than 50 years. Scholars have pointed out the increasing demand for more cross-cultural research on advertising content that can contribute to the standardization versus adaptation debate. Scholars have also pointed out that although the Arab world offers great opportunities for multinational corporations, the Arab world has been severely neglected in academic research. To comply with this demand, this study investigates the similarities and differences of the manifestation of cultural and religious values in the U.S. and the Arab world (Egypt, Lebanon, Kuwait, …

Bearing Capacity Analysis And Design Of Highway Base Materials Reinforced With Geofabrics, Tommy C. Hopkins, Liecheng Sun, Mikhail E. Slepak

Kentucky Transportation Center Research Report

The primary objective of this study was to develop and implement mathematical bearing capacity models originally proposed by Hopkins (1988, 1991) and Slepak and Hopkins (1993; 1995). These advanced models, which are based on limit equilibrium and are operated together, can be used to analyze the bearing capacity, or stability, of early construction of loads on a single layer of material, two-layered problems involving a layer of base aggregate and subgrade, and a foundation involving multiple layers of different materials, such as a flexible asphalt pavement. A Prandlt-type shear surface is used in the model analyses of layered foundations. In …

Libeskind: Memory Foundations, Noel Brady

Articles

Review of Daniel Libeskind's lecture in Cork, 2005.

Martyr's Square & The Grand Axis Of Beirut, Greg Boudrero

Undergraduate Honors Capstone Projects

From Beirut to Mostar, from London to the center of Berlin, from Warsaw to Jerusalem, from the cities in Europe to the cities of Africa, from Vietnam to Cambodia, everywhere, after the ravages of war comes the necessity for reconstruction. Such is the present case of Beirut, Lebanon. As the city recovers from years of civil war it strives to create a new identity, re-establishing the city's presence in the region.

A Study Of Social Carrying Capacity In Motorized Recreation Settings, Rachel Lyn Turk

Undergraduate Honors Capstone Projects

In the summer of 2004, I served as a recreation planning intern with the Bureau of Land Management (BLM), at the Ely Nevada Field Office. I was responsible for the preparation of the "Recreation Project Plan for the Chief Mountain Motorized Trailheads" (Appendix 1), which was a tremendous learning opportunity for me, since I had little experience with planning and designing for motorized use. The project piqued my interest into learning more about motorized recreation on public lands, which in turn led to this thesis on social carrying capacity of motorized users. This is a new area of research that …

The Great American Menu: Work Closely With Your Designer And Printer To Create Your Best Seller, Dave Pavesic

Hospitality Faculty Publications

No abstract provided.

Analysis And Design Of Switched Capacitor Converters, Jonathan W. Kimball, Philip T. Krein

Electrical and Computer Engineering Faculty Research & Creative Works

Switched capacitor converters have become more common in recent years. Crucial to understanding the maximum power throughput and efficiency is a model of the converter's equivalent resistance. A new form for equivalent resistance is derived and discussed in a design context. Quasi-resonant operation is also explored and compared to non-resonant operation. Several capacitor technologies are evaluated and compared.

Design Principles: Attractive Bias Written Report, Peter Dee

Articles

A written report to analyse two objects in relation to the principle of attractiveness bias; one of which supports this design principle and one which does not.

Design Principles: Continue With Critiquing: Written Report, Peter Dee

Articles

A written report about an object which is considered to be an example of good design focusing on two principles of design; aesthetic usability effect and affordance.

Steven Holl: The Open Thought, Noel Brady

Articles

Review of book on the work of Steven Holl Architect.

Performance Of Concrete Bridge Deck Joints, Lik Hang Yuen

Theses and Dissertations

The purpose of this research was to identify the types of joints available for use on concrete bridge decks and to investigate the performance characteristics of each type, including primary functions and movement ranges. Eleven reports on joint performance published by state departments of transportation and universities nationwide were analyzed in order to obtain information on joint performance problems typically encountered by state transportation agencies. In addition, test methods and specifications provided by the American Society for Testing and Materials (ASTM) were reviewed for application by bridge engineers to ensure the adequacy of deck joints.

The research indicates that compression …

Las Vegas Community Design Center, Kenneth Thayne Levesque

UNLV Retrospective Theses & Dissertations

The thesis focuses on a certain organization that aids cities and their citizens in the growth of communities, the Community Design Center (CDC). This paper seeks to understand the qualities of a CDC. The first chapter discusses concepts of community and design. A history discussion identifies when CDCs developed in contemporary form and investigates the types of goals CDCs strive to accomplish. The next four chapters consist of three case studies and analysis of selected contemporary CDCs: the Los Angeles Community Design Center; Environmental Works; and Pratt Institute Center for Community and Environmental Development. This paper is intended to provide …

Virtual Design And Modeling Of Various Manufacturing Processes For Remote Fabrication Of Transmuter Fuel, Jamil Mohamad Renno

UNLV Retrospective Theses & Dissertations

As currently envisioned, over 70,000 tons of high-level nuclear waste would be stored inside the planned Yucca Mountain repository. After emplacement, the site must be maintained and guarded for over 10,000 years; The reprocessing of spent nuclear fuel is a possible alternative to geological storage. Here, depleted Uranium would be separated from Plutonium and Minor Actinides. While Plutonium can be 'burned' in commercial nuclear reactors, the minor actinides would be transmuted into other elements. The large-scale deployment of remote fabrication and refabrication processes (approx. 100 tons of Minor Actinides (MA) annually) will be required. Process automation has the potential to …

The Design And Testing Of A Hydrogen Fueled Internal Combustion Engine, Evangeline Bulla

UNLV Retrospective Theses & Dissertations

A conventional single cylinder 425 cc four stroke internal combustion Polaris engine has been modified to run on hydrogen gas. For such an effort, both port injection as well as direct injection of hydrogen were attempted on the engine in order to evaluate its performance. The emphasis was placed on using direct injection of hydrogen over port injection, thereby utilizing the benefits of having high potential with regard to power, efficiency and also the minimization of NOx emissions. The engine was tested at Kell's automotive using a specially designed dynamometer for this purpose. Various performance parameters like power, torque, emissions, …

Use Of Advanced Synthesis Tools In Teaching Vlsi Design, Kevin Berwick, Dominic Nardone

Articles

No abstract provided.

Design Of A Simulation Of Multiple Perspectives In Road Safety Education, Gregg S. Rowland, Robert J. Wright, Barry M. Harper, Stephen Gray

Faculty of Education - Papers (Archive)

The possibilities afforded by new multimedia technology, combined with contemporary ideas about learning, have opened up new design opportunities for educational simulations. In particular, the use of sophisticated multimedia environments have made the design of experiential simulations, in which the learner plays an authentic role carrying out complex tasks, a much more tractable design task This paper describes the use of an educational simulation paradigm to represent multiple perspectives in a road safety context and the evaluative strategies that were undertaken to ensure the teaching resource will lead learners to a stronger understanding of the various factors that interact and …

A Cost Effective Sensor Design For Granular Flow Visualization, Anton Fuchs, Peter W. Wypych, David B. Hastie, Ian Frew, David M. Cook, B. Bradstatter

Faculty of Engineering - Papers (Archive)

This paper presents a cost-effective sensor design based on an arrangement of light dependent resistors (LDRs) to determine the particle flow velocity and the particle concentration of granular material flow. The sensor is designed for both dense phase and dilute phase flow and can be applied wherever a transparent sightglass is used in material conveying. The measurement setup and its applicability for industrial conveying processes are discussed and measurement results utilising plastic pellets are presented.

Design Of Monolimb Using Finite Element Modelling And Statistics-Based Taguchi Method, Winson Lee, Ming Zhang

Faculty of Engineering and Information Sciences - Papers: Part A

Background. Monolimb is a transtibial prosthesis having the socket and shank molded into one piece of thermoplastic material. If properly designed, the shank of a monolimb can have a controlled deflection during walking which simulates the ankle joint motions to some extent. However, there is no clear guidance for the design of monolimb considering the dilemma between shank flexibility and structural integrity. Methods. Finite element analysis was used to simulate structural tests based on ISO10328 on monolimbs of different configurations. Statistics-based Taguchi method was employed to identify the significance of each design factor in controlling the deformation and stress within …

Dimension-Based Versus Relation-Based Brand Name Design: A Test Of Different Psycholinguistic Theories, Tobias Langner, Franz-Rudolf Esch, John R. Rossiter

Faculty of Commerce - Papers (Archive)

Conveying distinctive and coherent brand associations is a key concern of modem brand management. Brands with a concise, consumer-relevant, and unique brand image are preferred by consumers. This study considers the contribution brand names can provide to building customer based brand equity. Recent cognitive theories of conceptual combination fonn the theoretical basis for analyzing consumer reactions toward brand names. Following these theories, three techniques to integrate brand name and product are developed. Reaction time measurements and association tests show that the techniques presented are an effective and efficient means to convey a brand's image.

Building Vulnerability Design Against Terrorist Attacks, Alexander Remennikov, D. Carolan

Faculty of Engineering - Papers (Archive)

Some of the concepts that can help structural engineers and building owners mitigate the threat of hazards associated with terrorist attacks on new and existing buildings are discussed. The state-of-the-art methods to enhance protection of the building by incorporating low-cost measures at the early stages of building design are highlighted.

Development And Model Formulation Of Scalable Carbon Nanotube Processes: Hipco And Comocat Process Models, Adedeji Ebenezer Agboola

LSU Master's Theses

Carbon nanotubes are seamless cylindrical tubes, consisting of carbon atoms arranged in a regular hexagonal structure. It is considered as the ultimate engineering material because of its unique and distinct electronic, mechanical and material characteristics. The discovery of these materials pioneered the nanotechnology revolution, which encompasses a broad and multidisciplinary spectrum, including nanomaterials, nanobiotechnology, and nanoelectronics. Hundreds of published articles of laboratory scale and pilot plant processes were reviewed that describe potential synthesis and post–synthesis purification methods for large scale production of carbon nanotubes. The main production technologies include electric arc discharge, laser vaporization, and catalytic chemical vapor deposition. These …

Multidisciplinary Design In Virtual Worlds, M A. Rosenman, G Smith, L Ding, D Marchant, M L. Maher

Faculty of Engineering - Papers (Archive)

Large design projects, such as those in the AEC domain, involve collaboration among a number of design disciplines, often in separate locations. With the increase in CAD usage in design offices, there has been an increase in the interest in collaboration using the electronic medium, both synchronously and asynchronously. The use of a single shared database representing a single model of a building has been widely put forward but this paper argues that this does not take into account the different representations required by each discipline. This paper puts forward an environment which provides real-time multi-user collaboration in a 3D …

Gene Network Analysis And Design, Matthew J. Berryman, Andrew Allison, Derek Abbott

Faculty of Engineering - Papers (Archive)

Gene networks are composed of many different interacting genes and gene products (RNAs and proteins). They can be thought of as switching regions in n-dimensional space or as mass-balanced signaling networks. Both approaches allow for describing gene networks with the limited quantitative or even qualitative data available. We show how these approaches can be used in modeling the apoptosis gene network that has a vital role in tumor development. The open question is whether engineering changes to this network could be used as a possible cancer treatment.

I Need Another Animated Gif! : Instructional Design Trends Of Ict Teaching Resources Created By Pre-Service Science Teachers, Doug Reid, Vaille M. Dawson, Patricia A. Forster

Faculty of Education - Papers (Archive)

In this paper, we present an examination of ICT resources created by pre-service science teachers. After a great deal of modelling, use and discussion regarding ICT materials, twenty-seven pre-service science teachers created ICT resources for use in lower secondary science classrooms. These resources were submitted in a number of formats and were designed with a variety of beliefs about instruction and interaction. Trends in the designs of the resources are reported in this paper and we point out possibilities for future study.

Operationalizing Nine Design Elements Of Authentic Learning Environments In A Classroom-Based On-Line Simulation, Brian Ferry, Lisa K. Kervin, John Hedberg, Janice B. Turbill, Brian L. Cambourne, David H. Jonassen

Faculty of Education - Papers (Archive)

Herrington, Oliver and Reeves (2003) assert that many researchers and teachers now accept that well designed multimedia environments provide an alternative to real-life settings without sacrificing the authentic context. Further, researchers report that recent educational software advances have demonstrated that it is feasible to create a motivational simulation that supports pre-service teachers by providing them with tools that allow them to view the effects of their decisions within a virtual classroom context (Aldrich, 2004) However, limited research has been reported on the use of authentic simulations in pre-service teacher education.

This paper describes the on-line simulation that we developed to …