Other Engineering Commons^™

Utilizing Economic And Environmental Data From The Desalination Industry As A Progressive Approach To Ocean Thermal Energy Conversion (Otec) Commercialization, Michael R. Eller

University of New Orleans Theses and Dissertations

Ocean Thermal Energy Conversion (OTEC) is a renewable energy technology that has to overcome several key challenges before achieving its ultimate goal of producing baseload power on a commercial scale. The economic challenge of deploying an OTEC plant remains the biggest barrier to implementation. Although small OTEC demonstration plants and recent advances in subsystem technologies have proven OTEC’s technical merits, the process still lacks the crucial operational data required to justify investments in large commercial OTEC plants on the order of 50-100 megawatts of net electrical power (MWe-net). A pre-commercial pilot plant on the order of 5-10 MWe-net is required …

A Wedge Impact Theory Used To Predict Bow Slamming Forces, Ashok Benjamin Basil Attumaly

University of New Orleans Theses and Dissertations

The pressures and impact forces acting on a hull while experiencing bow wave slamming is analyzed using Vorus' Impact Theory. The theory extends the hydrodynamic analysis of planing hulls from simple wedges to irregular shapes using a Boundary Element Method. A Fortran-based code developed by the Author is used to analyze hullforms. Linear strip theory is used to extend the analysis over a three dimensional hull. Post-processing of output data gives hull pressure distributions at different time steps and is visually presentable.

Impact pressure, Impact force, Planing, Wave slamming, Bow impact, Vorus' theory, Boundary Element Method, Linear strip theory

Design And Development Of Seed Hydration Analyzing Device And Its Utilization In Studying Cereal And Legume Hydration, Vinay Kumar Mannam

Doctoral Dissertations

Cereals and legumes are important sources of vegetable-based human nutrition. Together they account for 48.6 % of protein and 8.7 % carbohydrate consumption around the world. During preparation, majority of these agricultural staples are re-hydrated to aid in their digestibility, palatability and the bio-availability of the nutrients.

Study of hydration kinetics of cereals and legumes is an important and valuable necessity for industry and academia to understand and gain insights into seed hydration characteristics. An automatic seed hydration analyzing system is developed as a solution for lack of instruments with broad capabilities to study variety of seed properties. The device …

Evaluation Of Alternate Mouthpiece Material Types To Minimize Vibrations And Heat Loss - The Research And Execution Of Prototypes, Kristen Bobuk

Theses, Dissertations and Capstones

This paper is based on the idea of current horn mouthpieces being made solely out of brass with a limited market of stainless steel and titanium with plating being silver or gold. This is an opportunity to explore alternate materials; specifically steel, cast iron and aluminum for the base material and chrome, copper and nickel for plating materials. Readers will learn about metal properties such as hardness, thermal conductivity and specific heat and learn why certain materials are more beneficial than others.

A Simple Method For Estimation Of Queue Length, S. P. Anusha, Lelitha Devi Vanajakshi, Anuj Sharma

Department of Civil and Environmental Engineering: Faculty Publications

Urban arterials are characterized by frequent intersections. Queue length and delay are the two primary measures of performance of intersection. These measures play a primary role in determining the arterial performance. This article presents a methodology to determine the number of vehicles in queue at a signalized intersection for under saturated traffic conditions. The results obtained were validated using actual values that are manually extracted. The root-mean-square error is of the range 1.3 vehicles for estimation of number of vehicles in queue. The various aspects that have to be considered in accurate estimation of performance measures are also discussed.

Effects Of Time Varying Background Noise Conditions On Human Perception And Performance, Andrew H. Hathaway

Durham School of Architectural Engineering and Construction: Dissertations, Thesis, and Student Research

This thesis was designed to study the effects of changing noise conditions on human perception and performance. In two phases, participants were exposed to a number of noise conditions and their performance on an arithmetic task involving short-term memory was monitored and their subjective perception of noise conditions was collected via questionnaires.

In the first phase, participants were tested while being subjected to RC-29(H) and RC-47(RV) conditions created by broadband noise fluctuating on different time intervals, resembling the changing noise conditions potentially found in modern HVAC systems. These intervals varied from two minutes to ten minutes. Results show a significant …

La Yeguada Volcanic Vomplex In The Republic Of Panama: An Assessment Of The Geologic Hazards Using 40ar/39ar Geochronology, Karinne L. Knutsen, William I. Rose, Brian Jicha

Department of Geological and Mining Engineering and Sciences Publications

La Yeguada volcanic complex is one of three Quaternary volcanic centers in Panama. To assess potential geologic hazards, new samples were analyzed using argon analysis (⁴⁰Ar/³⁹Ar), and obtained the following: the most recent eruption occurred approximately 32,000 years ago at the Media Luna cinder cone; the youngest dated eruption from the main dome complex occurred 357 ± 19 ka, producing the Castillo dome unit; Cerro Picacho, a separate dacite dome 1.5 km east of the main complex is 4.47 ± 0.23 Ma; and the El Satro Pyroclastic Flow unit surrounds the northern portion of the volcanic …

Nuts & Bolts, Volume 1, Issue 4

Friends of the Larsen Tractor Museum

Splinter Gallery Construction

Restoration Club

Museum OLLI Program

Free Webinar: Ethanol in Legacy Engines

Diseño Mecánico De Una Máquina Para Dosificación De Bombones De Chocolate, Julián Alberto Forero Martín

Ingeniería en Automatización

No abstract provided.

Why American Engineers Aren't Unionized - A Comparative Perspective, Peter F. Meiksins, Chris Smith

Peter Meiksins

This article presents a comparative perspective on why U.S. engineers are not unionized. The decline of organized labor in the U.S. has stimulated a new interest in comparative research. Explanations of the prolonged stagnation and contraction of the U.S. labor movement that focus on the U.S. alone run the risk of assuming that the U.S. case is normal, and that the decline of organized labor is a structural inevitability of advanced capitalism. By broadening their scope to include other industrialized countries with similar political economies and different labor histories, students of the labor movement will be better able to identify …

A Model For Transforming Engineering Education Through Group Learning, Shannon Chance, Gavin Duffy, Brian Bowe, Mike Murphy, Tony Duggan

Conference papers

Electrical engineering educators at Technological University Dublin (DIT) have successfully implemented pedagogical change. They now use group-based, student-centered and inquiry-driven approaches to teach emerging engineers. The objective of this was to foster students’ personal as well as professional skills (i.e., teamwork, communication, self-directed learning, etc.). This paper explores how such change was achieved and provides graphic models that draw from prior phenomenological studies and incorporates aspects of Rogers’ (1962) product adoption curve and Lowe’s (2012) interpretations of it.

Scaling Reversible Adhesion In Synthetic And Biological Systems, Michael David Bartlett

Open Access Dissertations

Geckos and other insects have fascinated scientists and casual observers with their ability to effortlessly climb up walls and across ceilings. This capability has inspired high capacity, easy release synthetic adhesives, which have focused on mimicking the fibrillar features found on the foot pads of these climbing organisms. However, without a fundamental framework that connects biological and synthetic adhesives from nanoscopic to macroscopic features, synthetic mimics have failed to perform favorably at large contact areas. In this thesis, we present a scaling approach which leads to an understanding of reversible adhesion in both synthetic and biological systems over multiple length …

Examples Where The Conjunctive And Dempster’S Rules Are Insensitive, Florentin Smarandache, Jean Dezert, Valeri Kroumov

Branch Mathematics and Statistics Faculty and Staff Publications

In this paper we present several counter-examples to the Conjunctive rule and to Dempster rule of combinations in information fusion.

Study On The Selection Mechanism Of Opening Targeted Ship-Borne Containers Carrying Dangerous Goods, Yuheng Lu

Maritime Safety & Environment Management Dissertations (Dalian)

No abstract provided.

Study On The Influencing Factors Of Loading And Discharging Efficiency In Tianjin Port Container Terminal, Xiaoqi Kang

Maritime Safety & Environment Management Dissertations (Dalian)

No abstract provided.

Navigation Safety Management On Hangzhou Bay Sea-Crossing Bridge, Yueming Yin

Maritime Safety & Environment Management Dissertations (Dalian)

No abstract provided.

The Size Range Of Bubbles That Produce Ash During Explosive Volcanic Eruptions, Kimberly Genareau, Gopal K. Mulukutla, Alexander A. Proussevitch, Adam J. Durant, William I. Rose, Dork L. Sahagian

Department of Geological and Mining Engineering and Sciences Publications

Volcanic eruptions can produce ash particles with a range of sizes and morphologies. Here we morphologically distinguish two textural types: Simple (generally smaller) ash particles, where the observable surface displays a single measureable bubble because there is at most one vesicle imprint preserved on each facet of the particle; and complex ash particles, which display multiple vesicle imprints on their surfaces for measurement and may contain complete, unfragmented vesicles in their interiors. Digital elevation models from stereo-scanning electron microscopic images of complex ash particles from the 14 October 1974 sub-Plinian eruption of Volcán Fuego, Guatemala and the 18 May 1980 …

Applicability Of A Picosecond Laser For Micro-Polishing Of Metallic Surfaces, Abdullah Mohammad Khalid Hafiz

Electronic Thesis and Dissertation Repository

An increasing number of recent technological advancements is linked to the adoptions of ultra-short pulsed picosecond (ps) lasers in various material processing applications. The superior capability of this laser is associated with precise control of laser-material interaction resulted from extremely short interaction time. In this context, the present study explored the applicability of a ps laser in laser micro-polishing (LµP) of Inconel 718 (IN718) and AISI H13 tool steel. The melting regime ‒ a mandatory phase for LµP ‒ was determined experimentally by the variation of focal offset to attain desired laser fluence. The finite element formulation of heat transfer …

Aqueous Turbulence Structure Immediately Adjacent To The Air - Water Interface And Interfacial Gas Exchange, Binbin Wang

Theses and Dissertations

Air-sea interaction and the interfacial exchange of gas across the air-water interface are of great importance in coupled atmospheric-oceanic environmental systems. Aqueous turbulence structure immediately adjacent to the air-water interface is the combined result of wind, surface waves, currents and other environmental forces and plays a key role in energy budgets, gas fluxes and hence the global climate system. However, the quantification of turbulence structure sufficiently close to the air-water interface is extremely difficult. The physical relationship between interfacial gas exchange and near surface turbulence remains insufficiently investigated. This dissertation aims to measure turbulence in situ in a complex environmental …

Investigation Of Sound Transmission Through An Open Window Into A Room, Caleb F. Sieck

Durham School of Architectural Engineering and Construction: Dissertations, Thesis, and Student Research

In recent decades, noise levels in cities and the associated annoyance and health consequences have become regular topics of discussion. As a result, the assessment of environmental noise transmitting into buildings has received much attention. Current models of sound transmission through open windows have either neglected their thickness or the presence of a room behind on one side. The objectives of the present work were to (1) develop an accurate analytical model of sound transmission through an open window of finite thickness into a room, (2) verify the analytical model using a finite element model and experimental measurements, and (3) …

Making Sense Of Software Development And Personality Types, Luiz Fernando Capretz, Faheem Ahmed Dr.

Luiz Fernando Capretz

No abstract provided.

The Role Of Personality And Team-Based Product Dissection On Fixation Effects, Christine A. Toh, Scarlett R. Miller, Gül E. Okudan Kremer

Interdisciplinary Informatics Faculty Publications

D esign fixation has been found to be complex in its definition and expression, but it plays an important role in design idea generation. Identifying the factors that influence fixation is crucial in understanding how to enhance the design process and reduce the negative effects of fixation. One way to potentially mitigate fixation is through product dissection activities since this activity has been shown to increase creativity and design space exploration in engineering design. However, product dissection has not been studied in the context of design fixation, so it is unclear if, or how, this type of activity influences fixation. …

A Meaningful Housing Policy Would Deal With Defautling Landlords And At-Risk Tenants, Lorcan Sirr, Tom Dunne

Media

No abstract provided.

Fire Protection Analysis Of A Fresno Elementary School, Garen Lencioni

Fire Protection Engineering: Culminating Experience Project Reports

This report details the fire and life safety analysis of a Fresno Elementary School. Both prescriptive and performance based analysis were used to determine compliance with the building codes and fire codes which the building was constructed under. The prescriptive analyses included evaluation of the egress system, structural fire protection requirements, fire detection and alarm system and fire suppression systems. The prescriptive analyses were done to show the code requirements and how the building complies with them. The performance analyses were done to analyze the performance of the building in the event of a fire scenario. Three fire scenarios were …

Culminating Project- U.S. Federal Courthouse, Joshua W. Elvove

Fire Protection Engineering: Culminating Experience Project Reports

The purpose of this report is to select and evaluate a building for compliance with prescriptive and performance based requirements, that apply the concepts learned from previous courses taken as part of the master’s fire protection engineering degree curriculum at Cal Poly, San Luis Obisbo. The report discusses applicable code requirements for building construction, egress, fire alarm initiation and notification, and fire suppression and evaluates the building’s performance, including occupant movement, when subjected to two assumed fires. Fire Dynamics Simulator (FDS) was used to generate data used during the performance analysis. The performance analysis reveals that meeting prescriptive requirements doesn’t …

Fire And Life Safety Evaluation Of The Providence Pavilion, Oscar J. Zuniga

Fire Protection Engineering: Culminating Experience Project Reports

The fire and life safety systems of the Providence Pavilion, a four-story addition to the Providence Medford Medical Center in Medford, Oregon, are examined for compliance with applicable design and construction codes and standards and are found to comply with codes and conform to standards. The prescriptive requirements for occupancy classification, construction type, structural fire protection, egress systems, fire alarms, and fire protection are reviewed. Three different fire scenarios are developed and are then employed to study the fire and life safety systems’ performance using fire and egress modeling tools and simulations. Using this performance-based approach, the fire and life …

Life Safety Report Xyz Office Building Denver Colorado, Keith Dix

Fire Protection Engineering: Culminating Experience Project Reports

This report is a Life Safety Analysis of the XYZ building in Colorado. It is a government contract facility and as such prefers that its real name and location not be utilized for this report. The building was assessed prescriptively using the 2009 International Building Code (IBC) and was found to be predominantly compliant with the code and the relevant referenced standards. The building was then assessed using a Performance Based Design in accordance with methodologies found and addressed in common fire protection literature. The Design Criteria chosen to determine tenability for the Required Safe Egress Time (RSET) were Carbon …

Fire Protection Analysis Of The ‘Center For The Arts’ Building', Steven W. Carman

Fire Protection Engineering: Culminating Experience Project Reports

In partial fulfillment of the requirements for the Degree of Masters of Science in Fire Protection Engineering, a prescriptive and performance-based analysis was performed on a building housing the Center for the Arts. The building was constructed in 1947 in California as an automobile dealership and repair shop under the provisions of the then-controlling Uniform Building Code. It subsequently underwent several occupancy changes and has since served as a beauty school, gymnastics center, and currently as a performing and visual arts center. Prescriptive analyses were conducted based primarily upon the provisions of the 2010 California Building and Fire Codes, and …

Fire Protection Analysis Of Campus Building, Mackenzie Hill

Fire Protection Engineering: Culminating Experience Project Reports

A prescriptive and performance based analysis has been conducted on a College Campus Building in Southern California. This building is still in the approvals process and has been designed to meet the design standards in the 2010 California Building Code (CBC) and relevant NFPA codes. The building is proposed to be the center of operations as well as having administration facilities for the College. It will house an administrative office, production and support facilities. The project is three stories and includes a balcony that does not qualify as a story. The top floor is greater than 30 feet from grade …

Fire And Life Safety Analysis- Center For Science And Mathematics Building #52, Laura Radle

Fire Protection Engineering: Culminating Experience Project Reports

The purpose of this fire and life safety analysis is to determine whether Cal Poly’s Center for Science and Mathematics (CSM) meets fire safety goals. The primary fire safety goal is to provide building occupants with an environment that is reasonably safe from fire. This goal can be achieved by protecting the occupants not intimate with the initial fire development and improving survivability of those occupants intimate with the initial fire development, (NFPA 101, 2006). A prescriptive-based design approach and a performance-based design approach are used to evaluate building safety. The prescriptive-based approach is used to evaluate the building’s structural …