Engineering Commons^™

Modeling Of Commercial Maritime Port Recoverability From Security Disruptions: Work-In-Progress, C. Ariel Pinto, Wayne K. Talley

Engineering Management & Systems Engineering Faculty Publications

This article describes active research in commercial maritime port's recovery from security disruptions which explores the synergy of economic and simulation models in investigating the recoverability of ports after security incidents. Previous study has identified decision variables and throughput simulation models of port operation. However, none of these models have been utilized to investigate port's recovery from a security disruption and in evaluating recoverability investments. The method of research includes analysis of recorded disruptions, identification of impediments to recovery and investment criteria for recoverability. This article provides managers insight into including security and continuity of operation in managing various types …

Lessons Learned And Best Practices For Using An Analytic Strategy Approach For The Creation Of Virtual Laboratories For Distance Learning In Engineering Technology, Anthony W. Dean, Carol L. Considine, Gary R. Crossman

Engineering Technology Faculty Publications

This paper describes the use of an Analytic Strategy Approach used in the development of a Virtual Automation and Controls Lab in the Mechanical Engineering Technology Program of the Engineering Technology Department at Old Dominion University. This paper looks at the three phases, as applied to the development of a virtual lab using an analytic strategy design:

(1) Formulation of the quantitative and qualitative approach to assist in decision process,

(2) Quantitative and qualitative analysis of the decision alternatives - within the decision context,

(3) Interpretation of the analysis results and implications for decision.

A Template Functional-Gage Design Using Parameter-File Table In Autodesk Inventor, Cheng Lin, Moustafa Moustafa

Engineering Technology Faculty Publications

A systematic approach using Autodesk Inventor to design the functional gages of Geometric Dimensioning & Tolerancing (GD&T) is presented. The gages can be used to check straightness, angularity, perpendicularity, parallelism, and position tolerances of a part when geometric tolerances are specified with Maximum Material Condition (MMC). Four steps are proposed to accomplish the task: (1) creation of two-dimensional (2-D) initial template files, (2) generation of hierarchical folders for the template files, (3) creation a 3-D gage model from a specific template file, and (4) dimensioning and generation of the gage drawing. Results show that, by following this approach, students can …

The Administration Of Senior Design Projects In A Distance Learning Environment, Isaac L. Flory Iv, John R. Hackworth

Engineering Technology Faculty Publications

A method for administering a senior level capstone design course in Electrical Engineering Technology in a distance learning environment is described. Several avenues are explored that help the students successfully conceive, develop, and present their design projects from off- campus locations that are consistent with the requirements placed upon their on-campus peers. Several problems that are unique to offering a senior project course in a distance learning environment are explored and solutions are described.

Inkjet Printing Of Viable Mammalian Cells, Tao Xu, Joyce Jin, Cassie Gregory, Jay Hickman, Thomas Boland

Thomas Boland

The purpose of this study was to explore the use of a commercial thermal printer to deposit Chinese Hamster Ovary (CHO) and embryonic motoneuron cells into pre-defined patterns. These experiments were undertaken to verify the biocompatibility of thermal inkjet printing of mammalian cells and the ability to assemble them into viable constructs. Using a modified Hewlett Packard (HP) 550C computer printer and an HP 51626a ink cartridge, CHO cells and rat embryonic motoneurons were suspended separately in a concentrated phosphate buffered saline solution (3 x). The cells were subsequently printed as a kind of "ink" onto several "bio-papers" made from …

Cluster Treatment Of Characteristic Roots, Ctcr, A Unique Methodology For The Complete Robustness Analysis Of Linear Time Invariant Multiple Time Delay Systems Against Delay Uncertainties, Rifat Sipahi

Rifat Sipahi

Today, many high-tech applications such as simultaneous metal machining, neural networks, internet data congestion, population dynamics, chemical processes, formation flight problems, etc., appear in the form of multiple time delay systems (MTDS ). Due to the presence of delays, the stability of the dynamics is under question and needs to be addressed. In the last four decades, the stability analysis of the general class, Linear Time Invariant MTDS (LTI-MTDS), has been one of the challenging problems of the systems and control community, which originates from the complex stability analysis due to their infinite dimensionality. For tackling this, a unique procedure …

Constraint Programming, John Hooker

John Hooker

No abstract provided.

Runoff Production In The Upper Rio Chagres Watershed, Panama, Fred Ogden

Fred L. Ogden

Runoff production in tropical watersheds is governed by a wide variety of potential sources and there have been few rigorous studies to date. The 414 km2 upper Río Chagres basin offers a unique opportunity to better understand the runoff production mechanisms in tropical watersheds through data analysis and modeling with rainfall and runoff data. Flow data and tipping bucket rain gage data are available at both the basin outlet (Chico gage) and for an 80.6 km2 internal basin location (Piedras gage). Modeling is performed using the Sacramento Soil Moisture Accounting Model (SAC-SMA), calibrated using data from 2000 and verified using …

Convex Programming Methods For Global Optimization, John Hooker

John Hooker

No abstract provided.

Study On Improving The Opacity Of Paper Using Adjunct Filler Pigments, Pankaj Chowdhury, Puskar Gupta, Manoj Kumar, Pramod Bajpai, Raghavan Varadhan

PC

No abstract provided.

Platform Thinking In Embedded Systems, Robert Iannucci

Robert A Iannucci

No abstract provided.

Advances In Tissue Engineering: Cell Printing, David Varghese, Malay Deshpande, Priya Kesari, S Ohri, Thomas Boland

Thomas Boland

No abstract provided.

Development Of A Service Learning Geohazards Class In Ecuador, Raúl Ordóñez

Raúl Ordóñez

Co-PI, UD, $8,500.

Modular Teaching And Product Design Projects In Capstone Design, Yasar Demirel

YASAR DEMIREL

Some latest employment surveys show that chemical engineers are working in more and more diverse industries. For example, some of them design and manufacture specialty products, and need to understand property-structure relationships using chemistry, biology, and physics. Therefore, modular teaching with specialty product design projects would be useful, and should be integrated into the capstone design. Modular teaching can provide a means of responding to diverse and fast changing course contents and learning/teaching objectives. Product design projects come in various categories, such as separations, heat and mass transfer, kinetics, thermodynamics, or biotechnology, and incorporate DMAIC (Define, Measure, Analyze, Improve, Control) …

Stability Of Transport And Rate Processes, Yasar Demirel

YASAR DEMIREL

About fifty years ago, the Turing instability demonstrated that even simple reaction-diffusion systems might lead to spatial order and differentiation, while the Rayleigh-Bénard instability showed that the maintenance of nonequilibrium might be the source of order in fluids subjected to a thermodynamic force above a critical value. Therefore, distance from global equilibrium in the form of magnitude of a thermodynamic force emerges as another constraint of stability; some systems may enhance perturbations, and evolve to highly organized states called the dissipative structures after a critical distance on the thermodynamic branch. Although the kinetics and transport coefficients represent short-range interactions, chemical …

Advances In High Resolution Imaging From Underwater Vehicles, Hanumant Singh, Christopher Roman, Oscar Pizarro, Ryan Eustice

Christopher N. Roman

Large area mapping at high resolution underwater continues to be constrained by the mismatch between available navigation as compared to sensor accuracy. In this paper we present advances that exploit consistency and redundancy within local sensor measurements to build high resolution optical and acoustic maps that are a consistent representation of the environment.

We present our work in the context of real world data acquired using Autonomous Underwater Vehicles (AUVs) and Remotely Operated Vehicles (ROVs) working in diverse applications including shallow water coral reef surveys with the Seabed AUV, a forensic survey of the RMS Titanic in the North Atlantic …

Synthetic Gecko Foot-Hairs From Multiwalled Carbon Nanotubes, Betul Yurdumakan, Nachiket R. Raravikar, Pulickel M. Ajayan, Ali Dhinojwala

Ali Dhinojwala

We report a fabrication process for constructing polymer surfaces with multiwalled carbon nanotube hairs, with strong nanometer-level adhesion forces that are 200 times higher than those observed for gecko foot-hairs.

Analysis Of Welding Fumes: A Short Notice On The Comaprison Between Two Sampling Techniques, João F. Gomes

João F Gomes

No abstract provided.

On-Chip Implementation Of Cascaded Integrated Comb Filters (Cic) For Dsp Application, Rozita Teymourzadeh, Masuri Othman

Dr. Rozita Teymourzadeh, CEng.

Production Of Liquid Alkanes By Aqueous-Phase Processing Of Biomass-Derived Carbohydrates, George W. Huber, J. Chheda, C. B. Barrett, J. A. Dumesic

George W. Huber

Liquid alkanes with the number of carbon atoms ranging from C7 to C15 were selectively produced from biomass-derived carbohydrates by acid-catalyzed dehydration, which was followed by aldol condensation over solid base catalysts to form large organic compounds. These molecules were then converted into alkanes by dehydration/hydrogenation over bifunctional catalysts that contained acid and metal sites in a four-phase reactor, in which the aqueous organic reactant becomes more hydrophobic and a hexadecane alkane stream removes hydrophobic species from the catalyst before they go on further to form coke. These liquid alkanes are of the appropriate molecular weight to be used as …

Grams: A Grid Resource Analysis And Monitoring System, Hong-Ning Dai, Minglu Li, Linpeng Huang, Yi Wang, Feng Hong

Hong-Ning Dai

In this paper we propose GRAMS which is a resource monitoring and analysis system in Grid environment. GRAMS provides an infrastructure for conducting online monitoring and performance analysis of a variety of Grid resources including computational and network devices. Based on analysis on real-time event data as well as historical performance data, steering strategies are given for users or resource scheduler to control the resources. Besides, GRAMS also provides a set of management tools as well as services portals for user not only accessing performance data but also handling these resources. Moreover, a preliminary system prototype is presented.

Multistakeholder Evaluation Of Condominial Sewer Services, Earthea Nance

Earthea Nance, PhD (Stanford University, 2004)

No abstract provided.

10 Inventions On Keyboard Attachments: A Triz Based Analysis, Umakant Mishra

Umakant Mishra

Although the primary objective of the keyboard to input data into the computer, the advanced keyboards keep various other things in mind, such as, how to use the same keyboard for various other purposes, or how to use the same keyboard efficiently by using various other attachments to the keyboard. This objective led to various inventions on keyboard attachments, some of which are illustrated below in this article. This article illustrates 10 inventions on various keyboard attachments from US patent database. Each different attachment improves the usability of the keyboard in some way or other. Some attachments illustrated are template …

Small Scale Incinerator For Biomass, With A Bubbling Fluidized Bed. I. Combustion Of Sewage Sludge, Jerzy Baron, Sylwia Chrupek, Stanislaw Kandefer, Malgorzata Olek, Malgorzata Pilawska, Jan Porzuczek, Jan Wrona, Witold Zukowski

Witold Zukowski

Results are presented, obtained when sewage sludge was burned in a purpose-designed industrial installation, comprising a 1.5 MW bubbling fluidised bed combustor. Dried sewage sludge was used in the tests. The combustion process was stable, and since the moisture content of the dried sludge was low, no auxiliary fuel was required. Analysis of the flue gases has shown that the concentrations of SO2 and NOx are somewhat elevated, on account of rather high combined S and N content in the sludge. The results have confirmed that the technological solutions used were correct and that they can be used for economically …

Bioproduction Of 1,3-Propanediol Dehydrogenase – A Preliminary Overview, Chuen-Tat Kang

Kang Chuen Tat (江俊达)

Overall rate of bioproduction in 1,3-propanediol dehydrogenase, an enzyme that catalyse the synthesis of the precursor of aromatic high quality plastic, could be affected by preliminary product 3-hydroxypropionaldehyde (HPA) where many structural properties have been summarily analysed via nuclear magnetic resonance (NMR), Fourier Transformed Infrared Spectroscopy (FTIR), High Performance Liquid Chromatography (HPLC), Gas Phase Chromatography (GPC), Scanning Electron Microscopy (SEM). Although the chemical instrumental analysis of the 3-hydroxypropionaldehyde (HPA) may not produce desired result but the data obtained could be useful for future similar analysis that are rare in bulk production. The microbial consumption of various media especially those with …