Engineering Commons^™

A Finite Element Model Of The Synthesis, Degradation, And Spatial Spread Of Camp, R C. Salter, K J. Webb, A V. Phan, T C. Rich

Early Career Technical Journal (ECTJ)

Section 5: Numerical Methods; pp. 115-120

Implementation And Validation Of The Rht Concrete Model, Gerald Pekmezi, David Littlefield, Bradley Martin

Early Career Technical Journal (ECTJ)

Section 5: Numerical Methods; pp. 126-133

Computational Fluid Dynamics Anslysis Of Typical Lower Lung Bifurcations Under Mechanical Ventilation And Normal Breathing, Raghu Arambakam, Ramana M. Pidaparti, Angela M. Reynolds, Rebecca L. Heise

Early Career Technical Journal (ECTJ)

Section 5: Numerical Methods; pp. 134-141

Prediction Of Natural Mode Shapes And Frequencies Of Lung Airways Using Finite Element Analysis, Dawn A. Dagen, Raghu Arambakam, Ramana M. Pidaparti

Early Career Technical Journal (ECTJ)

Section 5: Numerical Methods; pp. 142-149

Aerodynamics Of Intercity Bus And Its Impact On Co2 Reductions, Aniket Bhave, Hessam Taherian

Early Career Technical Journal (ECTJ)

Section 6: Fluids Engineering; pp. 165-172

Improving Compressors’ Efficiency Through Modernization, Haylie Ballard, Andrew Brenner, Kaleb Acree, Farshid Zabihian

Early Career Technical Journal (ECTJ)

Section 6: Fluids Engineering; pp. 173-178

Preliminary Commercial Design For Transporting Low Temperature Particles For Use In Particle Solar Receivers Using Lifting Skips, Kenzo Repole, Sheldon Jeter

Early Career Technical Journal (ECTJ)

Section 7: Design & Manufacturing; pp. 181-184

Preliminary Investigation Of Particle Flow Characteristics Within Particle Heating Recievers, Clayton Nguyen, Jonathan Roop, Ryan Knott, S I. Abdel-Khalik, Sheldon Jeter, Hany Al-Ansary

Early Career Technical Journal (ECTJ)

Section 6: Fluids Engineering; pp. 159-164

Propagator 2: A Planing Autonomous Surface Vehicle With Azimuth Rim-Driven Thrusters, Daniel Frank, Andrew Gray, Eric Schwartz

Early Career Technical Journal (ECTJ)

Section 7: Design & Manufacturing; pp. 185-190

Design Rationale For Subzero, Bennett R. Stedwell, Ada A. Odey, Kevin Mcfall

Early Career Technical Journal (ECTJ)

Section 7: Design & Manufacturing; pp. 191-195

Use Of Cfd For Ventilation And Thermal Comfort Of A Multi-Level Atrium Building (Barber Vintage Motor Sport Museum), Aniket Bhave, Hessam Taherian, Milad Majdi

Early Career Technical Journal (ECTJ)

Section 8: Heat Transfer; pp. 207-214

Development Of A Fluent Model For Particle Flow Through A Porous Particle-Heating Receiver, Jonathan Roop, Clayton Nguyen, Said Abdel-Khalik, Sheldon Jeter

Early Career Technical Journal (ECTJ)

Section 8: Heat Transfer; pp. 220-225

Influence Of Fluid Rheology On The Piston Cylinder Oil Film Development And Pressure Distribution Considering Medium Speed Effects In Initial Engine Start Up, Chaudhri Usman, Kendrick Aung

Early Career Technical Journal (ECTJ)

Section 9: Miscelleneous; pp. 229-235

Water Heating Options At Mcwane Science Center - Birmingham, Al, Justin Hill, Mary Clark Noble, Hessam Taherian

Early Career Technical Journal (ECTJ)

Section 8: Heat Transfer; pp. 215-219

Some Project Manegement Challenges When Planning To Conduct Vertical Transportation Study, Magdelena Krstanoski

Early Career Technical Journal (ECTJ)

Section 9: Miscelleneous; pp. 236-240

Design And Development Of Air Powered Engine, Shalin Shah, Nisarg Patel, Kirtan Khajanchi, Vimal Savsani

Early Career Technical Journal (ECTJ)

Section 9: Miscelleneous; pp. 241-248

Asme Early Career Technical Journal (End Matter), Asme Ectc Coordinating Committee

Early Career Technical Journal (ECTJ)

Proceedings of the ASME Early Career Technical Conference, November 1-2, 2014. School of Engineering, University of Alabama at Birmingham, Birmingham, Alabama; pp. 249-250

Asme Early Career Technical Journal (Conference Program), Asme Ectc Coordinating Committee

Early Career Technical Journal (ECTJ)

Program of the ASME Early Career Technical Conference, November 1-2, 2014. School of Engineering, University of Alabama at Birmingham, Birmingham, Alabama

Concept Design Of A Labview-Mysql Data Warehouse For Digital Recording Of Ecg-Emg, Kristine R. Suratos, Rosula Sj Reyes

Electronics, Computer, and Communications Engineering Faculty Publications

To align with the recommendations set forth by the World Health Organization regarding eHealth, this study aims to develop a concept design of a suitable data warehouse for healthcare using electronic medical recording of ECG-EMG. This concept design once implemented aims to assist health care providers in improving patient’s healthcare data management. The system consists of three main layer: data source layer; software application layer; and data service database layer. The data source layer consists of patient profile, patient consultation, and patient test. Patient test was conducted using Olimex ECG-EMG shield and NI myDAQ module. The software application layer, developed …

Virtual Surface Temperature Sensor For Multi-Zone Commercial Buildings, Yuebin Yu, Denchai Woradechjumroen, Daihong Yu

Durham School of Architectural Engineering and Construction: Faculty Publications

Multi-zone structure is commonly used in small commercial office buildings, retail stores and supermarket. While there is no adjacent wall between the zones, the impact of a neighbor zone on the current zone can be approximated and analyzed through the application of virtual walls. It is critical to accurately estimate the virtual wall surface temperature in order to evaluate the model uncertainty and apply improved supervisory control on multiple rooftop air-conditioning units (RTUs). We propose an innovative virtual surface temperature sensor based on system-identification to solve this challenge. The validation of the virtual temperature model is processed by the three …

Shallow Flat Soffit Precast Concrete Floor System, George Morcous, Maher Tadros

Durham School of Architectural Engineering and Construction: Faculty Publications

A precast concrete floor system that eliminates the need for column corbels and beam ledges while being very shallow. The main advantages of the present system include a span to-depth ratio of 30, a flat soffit, economy, consistency with prevailing erection techniques, and fire and corrosion protection. The present system consists of continuous precast columns, prestressed rectangular beams, hollow-core planks, and cast-in-place composite topping. Testing results have indicated that a 12 inch deep flat soffit precast floor system has adequate capacity to carry gravity loads (including 100 psf live load) in a 30 ft x 30 ft bay size. Testing …

Dissolution Behavior Of Phosphate Glasses, Li Na Ma

Doctoral Dissertations

"The solubility of phosphate glasses in aqueous solutions can be tailored through compositional control to obtain a wide range of ion release rates required for a variety of applications. The principal objective of this dissertation is to advance the understanding of the dissolution behavior of phosphate glasses in aqueous environments.

Two families of glasses, sodium-iron phosphate (NFP) glasses and sodium-calcium phosphate (NCP) glasses, were evaluated. The dissolution behavior depends on the phosphate anions that constitute the glass structure and the associated metal (Me) cations. The phosphate glass structure, defined by the distribution and average size of phosphate anions and depending …

Sustainability Analysis In Integrated Inventory Control And Transportation Systems, Brian Joseph Schaefer

Doctoral Dissertations

"Due to the importance of costs as well as environmental effects of logistical activities throughout supply chains, such as inventory holding, freight transportation, and warehousing activities, this dissertation models and analyzes four integrated inventory control and transportation problems that account for economic and environmental aspects of a supply chain agents related decisions.

The first model presents an integrated inventory control and transportation problem in a single item deterministic demand setting. A supply chain agents inventory control and transportation mode selection problem is solved under carbon cap, carbon cap and trade, carbon cap and offset, and carbon tax regulations. The second …

Two New Families Of High-Gain Dc-Dc Power Electronic Converters For Dc-Microgrids, Venkata Anand Kishore Prabhala

Doctoral Dissertations

"Distributing the electric power in dc form is an appealing solution in many applications such as telecommunications, data centers, commercial buildings, and microgrids. A high gain dc-dc power electronic converter can be used to individually link low-voltage elements such as solar panels, fuel cells, and batteries to the dc voltage bus which is usually 400 volts. This way, it is not required to put such elements in a series string to build up their voltages. Consequently, each element can function at it optimal operating point regardless of the other elements in the system. In this dissertation, first a comparative study …

Inorganic Biodegradable Devices For Temporary Implants, Kassan Unda

Masters Theses

"Implantable electronic devices have great potential to benefit many health care technologies. They comprise of two different categories. The first is permanent prosthetic devices like cardiac pacemakers or nerve stimulants. The other category includes temporary devices for interventional medical monitoring and control scenarios, which lose functionality and become unnecessary after their intended operational lifetime. This can cause serious electromagnetic and biomechanical safety concerns if not removed from the body by an additional surgical operation.

This thesis focuses on exploring the feasibility of implantable inorganic bioresorbable thin film resistive devices utilizing bioactive glass as the core structural material. This device will …

Mechanistic Identification Of Specific Force Coefficients In Endmilling Inconel 718 Under Four Cooling Strategies, Mahmood Shaman Ameen

Masters Theses

“This thesis presents the results of experimental investigations of the mechanistic identification of specific force coefficients for uncoated bull-nose and uncoated wavy-edge/bull-nose helical endmilling of Inconel 718 under emulsion, minimum quantity lubrication (MQL), cryogenic (LN₂), and combined (MQL + LN₂) cooling. Several slot milling tests were conducted on Inconel 718 workpiece block with depth of cut 1.25 mm. The cutting parameters were varied as: spindle speed, n = 250 and 750 rev/min, feedrate, f = 25–75 mm/min by using uncoated carbide bull-nose helical endmill. Also 24 peripheral milling tests were conducted on Inconel 718 workpiece block …

Machinability Improvement During High-Speed End-Milling Of Inconel 718 Alloy, Chukwujekwu Nnadi

Masters Theses

“This thesis presents the results of the experimental investigation of the effects of machining parameters (spindle speed and feedrate) and cooling strategies [Minimum Quantity Lubrication (MQL), Cryogenic Liquid Nitrogen (LN₂), and combined (MQL+LN₂)] on cutting force components, cutting temperature, tool wear and surface roughness during high-speed slot end-milling of Inconel 718 alloy. In addition, a comparative evaluation of the three cooling strategies was conducted for cutting force components, surface roughness and residual stresses. All end-milling experiments were conducted on a Cincinnati Milacron Vertical Machining center (VMC), using a 0.5 inch (12.7 mm) diameter, 0.03 inch (0.762 …

Software-Based Instrumentation For Analysis Of Electrostatic Discharge Effects, Antonio James Sabatini

Masters Theses

”Failures caused by electrostatic discharge (ESD) compromise the reliability of embedded systems. Peripherals such as the universal serial bus (USB) are particularly vulnerable, as isolating them to avoid electromagnetic interference would defy their purpose - facilitating communication with and/or by the embedded system. Better understanding the propagation of failures that result from ESD can facilitate defensive development of hardware and software for embedded systems, but is hampered by the lack of non-invasive and lightweight instrumentation techniques.

The original contribution of this thesis is the design and development of software-based instrumentation for monitoring the reaction of the USB peripheral of an …

Workplace Sleepiness: Causes, Consequences And Countermeasures, Neda Khalafi

Masters Theses

"Sleep deprivation is an epidemic problem in our society that adversely affects the quality and safety of our daily lives. At home and on the job, inadequate sleep is associated with considerable social, financial, and health-related costs, due to instability of waking functions. Research has shown that, sleep deprivation among workers, whether from sleep disorders, lifestyle or shift work, can hinder the proper performance, and in extreme cases may pose hazard to the workers themselves and their environment. Deficits in daytime performance can have profound effects in the processing industry where workers are often required to perform monotonous tasks that …

Data Classification And Forecasting Using The Mahalanobis-Taguchi Method, Adebolaji A. Jobi-Taiwo

Masters Theses

"Classification and forecasting are useful concepts in the field of condition monitoring. Condition monitoring refers to the analysis and monitoring of system characteristics to understand and identify deviations from normal operating conditions. This can be performed for prediction, diagnosis, or prognosis or a combination of any these purposes. Fault identification and diagnosis are usually achieved through data classification, while forecasting methods are usually used to accomplish the prediction objective. Data gathered from monitoring systems often consists of multiple multivariate time series and is fed into a model for data analysis using various techniques. One of the data analysis techniques used …