Engineering Commons^™

Santa Clara Magazine, Volume 43 Number 1, Summer 2001, Santa Clara University

Santa Clara Magazine

2 - 150TH ANNIVERSARY MEMORIES In honor of SCU's sesquicentennial year, alumni reflect on their Bronco experiences.

4 - "SHEN FU" LEARNED THE GRACE OF ANGER By Tennant Wright, S.J. A friend shares his memories of Philip Oliger, S.J., who taught him that "passion is the sign that we are alive."

14 - WINGING IT By Adam Breen. Professor Bill Stover is a volunteer pilot for The Flying Doctors, a humanitarian group that brings free basic health and dental care to underprivileged communities in Mexico.

18 - SAVING GRACE By Elizabeth Kelly Gillogly '93. Santa Clara University's 150 years come …

In-Situ Colloidal Mno2 Deposition And Ozonation Of 2,4-Dinitrotoluene, Kevin C. Bower, Kevin H. Gardner, Christopher M. Miller, Lingjun Kong

Civil & Environmental Engineering

Laboratory experiments are presented that demonstrate a novel in situ semipassive reactive barrier for the degradation of 2,4 dinitrotoluene created by coating aquifer surfaces by deposition of colloidal MnO2, which catalyzes ozone degradation and enhances contaminant oxidation. Ozone is added to the reactive barrier and is transported through the zone with the contaminants by existing hydraulic gradients. The communication presents the preliminary laboratory investigation demonstrating the viability of this method. Studies were conducted by coating Ottawa sand with colloidal MnO2. Results show that concentrations of MnO2 in the range of 0.2 mg/g can be deposited with no measurable change in …

Determining United States Construction Management Aspects To Be Introduced To Construction Management Education In China, Jun Liu

Master of Technology Management Plan II Graduate Projects

The following study describes the current status of China's Construction Industry, highlights its educational system, and identifies the main constraints that restrain the construction industry from assuming a more effective and efficient role in China's impressive economic development.

This study outlines the problems existing in China's construction educational system. Through analyzing United States construction management education, and comparing it with China's construction education, the advantages of the United States construction management education are determined, and recommendations are made to improve China's construction education.

Postgraduate And Undergraduate Mechatronics' Courses At The University Of Wollongong, C. Cook, Fazel Naghdy, F. De Boer

Faculty of Engineering - Papers (Archive)

This paper outlines the University's involvement with industry based manufacturing projects, and how this has lead to the recent establishment of postgraduate and undergraduate mechatronics degrees. The nature of the industrial projects is described with examples of specific problems, test equipment and experimental rigs given. This work can be used to explain the reasons for the design of the mechatronics courses at Wollongong. A new teaching methodology particularly suitable for mechatronic's education is also discussed.

Guide To Revenue Calculations: Local Option Highway User Tax, Jon D. Fricker

Indiana Local Technical Assistance Program (LTAP) Publications

This guide is provided to explain the output generated by the computer programs, and to suggest ways in which the results can be adapted to specific LOHUT proposals before a County Council. Indiana LTAP neither endorses nor opposes passage of a LOHUT. The revenue projections it provides are intended to be an aid to well-informed decision-making on the part of a county’s citizens and its County Council.

Lessons From Roman Cement And Concrete, Norbert J. Delatte

Civil and Environmental Engineering Faculty Publications

Although masonry and lime mortars had been used for centuries by earlier civilizations, the Romans were the first to extensively use naturally occurring volcanic earth to make hydraulic cement. The volcanic powder named “pulvis puteolanis,” found near the town of Puteoli near Naples (now Pozzouli), was used to build magnificent structures. The use of this hydraulic cement in masonry and concrete greatly expanded civil engineering possibilities. The Roman engineer Vitruvius, writing in The Ten Books on Architecture, described the careful materials selection, proportioning, and workmanship that was critical to the performance of Roman concrete. Masonry and coarse and fine …

Abnormal Cell Detection Using The Choquet Integral, R. Joe Stanley, James M. Keller, Charles William Caldwell, Paul D. Gader

Electrical and Computer Engineering Faculty Research & Creative Works

Automated Giemsa-banded chromosome image research has been largely restricted to classification schemes associated with isolated chromosomes within metaphase spreads. In normal human metaphase spreads, there are 46 chromosomes occurring in homologous pairs for the autosomal classes 1-22 and the X chromosome for females. Many genetic abnormalities are directly linked to structural and/or numerical aberrations of chromosomes within metaphase spreads. Cells with the Philadelphia chromosome contain an abnormal chromosome for class 9 and for class 22, leaving a single normal chromosome for each class. A data-driven homologue matching technique is applied to recognizing normal chromosomes from classes 9 and 22. Homologue …

Benzene Toxicity And Removal In Laboratory Phytoremediation Studies, Joel Gerard Burken, Carla Ross, Lisa M. Harrison, Adrian Marsh, Lars Zetterstrom, Juel S. Gibbons

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Hybrid Poplar Cuttings Were Shown to Impact the Fate and Transport of Subsurface Benzene, While Toxicity to the Poplars Was Not Observed. Laboratory Experiments Investigated the Toxicity Response of Poplar Cuttings to Benzene Exposure, Contaminant Distribution in Plant Tissues, Contaminant Degradation in the Soil Profile, and Contaminant Volatilization from the Soil and Plant Tissues. Two Separate Studies Were Conducted to Evaluate These Parameters. the First Study Examined the Toxicity of Benzene to Hybrid Poplar Cuttings in Batch Reactors. Poplar Cuttings Were Exposed to Various Concentrations of Benzene Contaminated Water in Two Different Types of Soil. Transpiration Rates Were Measured as …

Near-Field Microwave Non-Invasive Determination Of Nacl In Mortar, Karl Joseph Bois, Aaron D. Benally, R. Zoughi

Electrical and Computer Engineering Faculty Research & Creative Works

In recent years near-field microwave nondestructive testing and evaluation techniques have shown great promise for evaluating different properties of cement-based structures. An important issue regarding the inspection of these structures is the ability to determine the presence and evaluate the content of chloride in them. Chlorides can be introduced in these structures in many different ways including when salts are present in their mixing water. Consequently, for this investigation, two sets of 8" × 8" × 8" (203mm) cubic mortar specimens were prepared each with a water-to-cement (w/c) ratio of 0.5 and 0.6, respectively, and both sets with sand-to-cement ratios …

The Conference Proceedings Of The 2001 Air Transport Research Society (Atrs) Of The Wctr Society, Volume 3, Yeong-Heok Lee, Brent D. Bowen, Scott E. Tarry, Uno Aviation Institute

Faculty Books and Monographs

UNOAI Report 01-8

The Conference Proceedings Of The 2001 Air Transport Research Society (Atrs) Of The Wctr Society, Volume 2, Yeong-Heok Lee, Brent D. Bowen, Scott E. Tarry, Uno Aviation Institute

Faculty Books and Monographs

UNOAI Report 01-7

Kentucky Highway User Survey 2000, Ronald E. Langley

Kentucky Transportation Center Research Report

The purpose of this study was to continue the efforts begun in 1997 to monitor Kentucky public opinion regarding the quality of the highway system and also includes a portion to measure satisfaction with the current drivers’ license and registration renewal processes. Kentucky’s 2000 public opinion is compared to data collected since 1997 to gauge Kentucky’s progress over the past years, and is compared to the NQI 2000 Survey done on the national level to show how Kentuckians’ opinions compare to those nationwide.

Low Frequency Noise In Gan Metal Semiconductor And Metal Oxide Semiconductor Field Effect Transistors, S. L. Rumyantsev, N. Pala, M. S. Shur, R. Gaska, M. E. Levinshtein, M. Asif Khan, Grigory Simin, X. Hu, J. Yang

Faculty Publications

The low frequency noise in GaNfield effect transistors has been studied as function of drain and gate biases. The noise dependence on the gate bias points out to the bulk origin of the low frequency noise. The Hooge parameter is found to be around 2×10⁻³ to 3×10⁻³.Temperature dependence of the noise reveals a weak contribution of generation–recombination noise at elevated temperatures.

Fuel-Saving Strategies For Dual Spacecraft Interferometry Missions, Christopher A. Bailey, Timothy W. Mclain, Randal W. Beard

Faculty Publications

Separated spacecraft interferometry missions will require that spacecraft move in a coordinated fashion to ensure minimal and balanced consumption of fuel. This paper develops strategies for determining interferometry mission plans that result in significant fuel savings over standard approaches. Simulation results demonstrate that valuable reductions in fuel consumption can be realized by combining the retargeting and imaging maneuvers required to image multiple stellar sources. Fuel-optimal imaging strategies have been developed for two-spacecraft interferometry missions similar to the proposed StarLight mission using chained local optimization methods. Based on these strategies, sampling-pattern guidelines for space-borne interferometry missions have been developed.

State Road Fund Revenue Collection Processes: Differences And Opportunities Of Improved Efficiency, Robert J. Eger Iii, Merl M. Hackbart

Kentucky Transportation Center Research Report

Research regarding the administration and collection of road fund revenues has focused on gaining an understanding of the motivations for tax evasion, methods of evasion, and estimates of the magnitude of evasion for individual states. To our knowledge, little attention has been focused on the impact road fund collection, assessment, audit, and enforcement processes have on tax evasion. The purpose of this study is to review the current road fund assessment, collection, audit, and enforcement processes and procedures and to develop recommendations to improve the efficiency and effectiveness of the process.

Development And Proposed Implementation Of A Field Permeability Test For Asphalt Concrete, David L. Allen, David B. Schultz Jr., L. John Fleckenstein

Kentucky Transportation Center Research Report

Pavement drainage contributes greatly to long-term pavement performance. Pavements undergo surface, as well as subsurface, drainage during prolonged rain events. It is this subsurface drainage that is of concern in this study. In the advanced asphalt pavements of today, where a drainage layer may be incorporated to facilitate the movement of water out of the above overlying pavement layers, water can be a problem in areas with variable permeability. High permeability may also cause other problems related to drainage such as frost heave, stripping, asphalt emulsification, and water coming out of the pavement surface from deeper layers in the pavement …

Public Involvement In Highway Improvement: A Comparison Of Three Different Visualization Modes For A Case Study In Central Kentucky, Joel Brumm, Keiron Bailey, Ted H. Grossardt

Kentucky Transportation Center Faculty and Researcher Publications

Public involvement in highway improvement presents a set of complex problems involving many stakeholders.Since visualizations are increasingly regarded as essential tools in this process, a clearer understanding of the specific merits of advanced visualization techniques and their potential contributions must be developed.As a step towards integrating visualizations into an improved public planning paradigm termed Structured Public Involvement (SPI), this paper investigates the utility and performance of three visualization modes, termed 2D, 3D and VR (Virtual Reality), for a case study highway in Central Kentucky.

Visualization scenarios were designed and engineered according to the principle of elemental decomposition.Using a combination …

Optimal Aeroelastic Vehicle Sensor Placement For Root Migration Flight Control Applications, Abdul Ghafoor Al-Shenhabi

Mechanical & Aerospace Engineering Theses & Dissertations

An important step in control design for elastic systems is the determination of the number and location of control system components, namely sensors. The number and placement of sensors can be critical to the robust functioning of active control systems, especially when the system of interest is a large high-speed aeroelastic vehicle. The position of the sensors affects not only system stability, but also the performance of the closed-loop system. In this dissertation, a new approach for sensor placement in the integrated rigid and vibrational control of flexible aircraft structures is developed. Traditional rigid-body augmentation objectives are addressed indirectly through …

Simulation Optimization Studies Of Routing And Process Flow Problems, Satish Ravichandran

Electrical & Computer Engineering Theses & Dissertations

Computer aided simulation is emerging as a powerful tool for numerical analysis and in conducting performance evaluations of complex systems that depend on a multitude of variables. The primary objective in such simulation studies is to gauge the performance of the system under a various constraints and operating conditions. The effects of changing the operating parameter space can thus be analyzed without having to implement costly changes. Simulations are also carried out for the baseline scenarios to verity and validate the basic underlying system model. In this thesis research, two practical problems were studied through numerical modeling, and optimized solutions …

Hitos En La Historia De La Metalurgia, Fathi Habashi

Fathi Habashi

Dobór Systemu Oczyszczania Gazów Odlotowych Ze Spalania Odpadów Niebezpiecznych, Robert Oleniacz

Robert Oleniacz

The flue gas cleaning system is usually one of the most costly elements of the installation to the incineration of hazardous waste. Adapting the system to the actual needs could therefore bring obvious economic benefits.

The paper presents the method of the preselection of the configuration of the cleaning system based on knowledge of the level of concentration of selected components of the raw exhaust gas (sulfur dioxide, hydrogen chloride, hydrogen fluoride, total dust, mercury, cadmium and thallium, and other heavy metals). Twelve examples of flue-gas cleaning systems were proposed and extreme concentration values of the substances in the raw …

Niezorganizowana Emisja Zanieczyszczeń Powietrza Z Hal Ciągłego Odlewania Stali, Marian Mazur, Marek Bogacki, Robert Oleniacz, Agnieszka Łopata

Robert Oleniacz

Air pollutant emissions occurring in an uncontrolled way do not be subject to the regular verification just like it takes place in case of the controlled sources, for which the routine measurements are carried out. In the paper a methodology and the results of some research were presented. The research consisted in determination the quantity of dust and gaseous pollutants emitted from the halls in which technological processes connected with the steel continuous casting were being run. Stocktaking of all the uncontrolled emission sources were carried out and the technological operations predominating in the level of the particle matter and …

Highway Rock Slope Management Program, Tommy C. Hopkins, Tony L. Beckham, Liecheng Sun, Bixian Ni, Barry Butcher

Kentucky Transportation Center Research Report

Development of a comprehensive geotechnical database for risk management of highway rock slope problems is described. Computer software selected to program the client/server application in windows’ environment, components and structure of the geotechnical database, and some of the primary factors considered in constructing the database are discussed. In the establishment of a large database that will be used widely, it is extremely important to select development software that will allow simultaneous use of the database by numerous users. Major integrated components of the database include rock slope, landslide, and soil and rock engineering data. This report mainly focuses on the …

Resilient Modulus Of Kentucky Soils, Tommy C. Hopkins, Tony L. Beckham, Charlie Sun, Bixian Ni

Kentucky Transportation Center Research Report

In recent years, the American Association of State Highway Transportation Officials (AASHTO) has recommended the use of resilient modulus for characterizing highway materials for pavement design. This recommendation evolved as of a result of a trend in pavement design of using mechanistic models, which are based on the theory of elasticity (layered elastic analysis) or linear and non-linear, finite elements (and finite difference methods), or a combination of both of those theoretical approaches. Although much progress has been made in recent years in developing mathematical, mechanistic pavement design models, results obtained from those models are only as good as the …

Identification Of Shapes Using A Nonlinear Dynamic System, Shaheen Hoque, Sanza Kazadi, Angel Li, Will Chen, Elvio Sadun

Sanza Kazadi

Retention Of Female Faculty Members, Susan L. Murray, Mariesa Crow, Suzanna M. Rose

Engineering Management and Systems Engineering Faculty Research & Creative Works

The recruitment and the retention of female undergraduate and graduate students into engineering courses is discussed. A similar challenge lies in recruiting female faculty member from the limited pool of candidates in several fields at most universities. It is found that about half the females who were hired did not stay at the university. It is suggested that programs should be introduced to encourage mentoring and career development as such improvements would benefit all faculty members both female and male.

Apparatus And Method For Two Stage Hybrid Space-Time Adaptive Processing In Radar And Communication Systems, Todd B. Hale, Michael C. Wicks, Raviraj S. Adve

AFIT Patents

A Two-Stage Hybrid algorithm offers significant improvement in the false alarm rate and detection performance of Space-Time Adaptive Processing in non-homogeneous environments for both radar and digital communications. The first stage analyzes data from a range cell of interest by direct data domain processing, suppressing discrete interferers within the range cell of interest. The second stage implements a purely statistical STAP algorithm, preferably an enhanced version of the Joint-Domain Localized ("JDL") statistical algorithm. For radar this second stage estimates the interference within the range cell of interest from the surrounding range cells. For a communications system, the second stage estimates …

Dislocation-Controlled Perforated Layer Phase In A Peo-B-Ps Diblock Copolymer, Lei Zhu, Ping Huang, Stephen Z. D. Cheng, Qing Ge, Roderic P. Quirk, Edwin L. Thomas, Bernard Lotz, Jean-Claude Wittmann, Benjamin S. Hsiao, Fengji Yeh, Lizhi Liu

College of Polymer Science and Polymer Engineering

Small angle x-ray analyses show that the shear-induced hexagonal perforated layer phase in a poly(ethylene oxide)-b-polystyrene diblock copolymer consists of trigonal (R3(overbar)m) twins and a hexagonal (P6(3)/mmc) structure, with trigonal twins being majority components. Transmission electron microscopy reveals that the hexagonal structure is generated through sequential intrinsic stacking faults on the second layer from a previous edge dislocation line, while the trigonal twins are formed by successive intrinsic stacking faults on neighboring layers due to the plastic deformation under mechanical shear.

Resonant Tunneling And Bistability In A Double Barrier Structure Under An Intense Terahertz Laser, C. Zhang

Faculty of Engineering - Papers (Archive)

By using exact wave functions of an electron in a terahertz laser field, we calculated the electron resonant tunneling through a double barrier structure. It is found that the laser field has two effects on the current voltage characteristics. First, it introduces additional tunneling states through the structure due to multiple photon processes (emission, absorption, scattering). Second, it reduces the width of the bistable region. At high field strength and low frequencies, the bistability can be completely removed. This can provide a method by which to tune the bistable region in a double barrier structure.

Ingaasnsb/Gaas Quantum Wells For 1.55 Μm Lasers Grown By Molecular-Beam Epitaxy, Xiaodong Yang, J. B. Heroux, L. F. Mei, W. I. Wang

Mechanical and Aerospace Engineering Faculty Research & Creative Works

InGaAsNSb/GaAs quantum wells (QWs) were grown by solid-source molecular-beam epitaxy using a N₂ radio frequency plasma source. The effect of adding Sb during growth of InGaAsN/GaAs QWs was studied. X-ray diffraction, reflection high-energy electron diffraction and transmission electron microscopy studies indicate that Sb suppresses the three-dimensional growth and improves the interface of the QWs. X-ray diffraction and secondary ion mass spectroscopy analysis show that Sb gets incorporated into the quantum well, which becomes a quinternary compound that was previously unexplored. The introduction of Sb during growth of InGaAsN/GaAs QWs significantly enhances the optical properties of the QWs. 1.53 /spl …