SIMULATING THE PERFORMANCE OF A MULTIPLE EXCHANGE MECHANISM MARKET

Industrial Organization,

THE VISUAL AND PERFORMING ARTS IN THE TECHNICAL COMMUNICATION CLASSROOM: REINFORCING THE UNIVERSITY\u27S INTERNAL COMMUNITY LITERACY VIA SERVICE-LEARNING

This report details a class taught that was an exploration into the value of STEAM or science, technology, engineering, arts, and mathematics within the confines of Technical Communication as it applies to the business and industry of theatre. It was an experiment in service learning as it could be tied into the Arts via differing technai, as described by John Wild in “Plato’s Theory of Texnh a Phenomenological Interpretation,” demonstrating a necessity for Arts as they pertain to STEM-centric universities. This report discusses a section of Technical and Professional Communication taught at Michigan technological University that consisted of twenty-five students investigating theatre as an industry and business and applying the theory and practice of Technical Communication, specifically in the context of Kelli Cargile Cook’s Layered Literacies to bridge STEM, the humanities, and the Arts. The theatre with which students collaborated worked closely with faculty and staff within various areas of that department. The students in the Technical Communication classroom were predominantly STEM majors. This offered a unique opportunity to demonstrate the potential for the Arts to cross academic disciplines at a STEM-focused university and emphasize the importance of interdisciplinarity through a better community literacy

EXEIS, Expert screening and optimal extraction/injection pumping systems for short-term plume immobilization

This report presents the EXEIS family of micro-computer based programs for achieving short-term contaminant plume containment. EXEIS is applicable if contaminated water cannot be extracted and water cannot be imported to or exported from the site. There are two main purposes and types of users. For persons relatively unfamiliar with groundwater remedial actions, an expert screening system gives guidance concerning whether extraction/injection (Eli) pumping, slurry wall or sheet piling are most appropriate. For personal more experienced in remedial actions, management models compute optimal E/I strategies for short-term containment. Via deterministic and stochastic multiobjective optimization models, uncertainty in both planning horizon and aquifer parameters is addressed

Introducing uncertainty of aquifer parameters into an optimization model

A stochastic analysis is made for a previously described groundwater contaminant management model {Peralta and Ward, 1988). The stochastic model is based on incorporating uncertainty of the aquifer parameters transmissivity and effective porosity into the model. This is accomplished by finding the partial derivative of drawdown with respect to each of these parameters using a Taylor series expansion approximation of the Theis equation. Input that is required for the stochastic version is the mean of the transmissivity and effective porosity, the coefficient of variation of the transmissivity and effective porosity, and a reliability level (0%-100%) . The reliability is a measure of the user\u27s required confidence in the model solution. The user wants to be confident, at some probability, that the actual changes in head at pumping wells do not exceed the values calculated by the model, while 1 at the same time, he wants to be confident that actual changes in head at observation wells are at least as great as the calculated values. Thus, equations that are affected by heads at the observation wells are treated differently than equations that are affected by heads at the pumping wells. Optimal strategies are presented to demonstrate sensitivity to changes in standard deviation of aquifer parameters and to changes in reliability level. Tests show that uncertainty of transmissivity affects the optimal pumping more and the final gradient and objective function less than uncertainty of effective porosity. In general, as uncertainty of aquifer parameters increases, optimal pumping values decrease, resulting in a poorer final hydraulic gradient. As the reliability level is increased optimal pumping decreases, again resulting in a poorer final gradient

Optimal piezometric surface management for groundwater contaminant control

A methodology is described for efficiently evaluating possible injection/extraction pumping schemes to most economically contain a groundwater contaminant plume. A multi-objective model is analyzed with a micro-computer. Simulation and optimization is performed by employing the response matrix method

Faith is my Fortune: A Life Story of George Pepperdine

This memoir, dictated to the authors by George Pepperdine, is subtitled “actual experiences, business success and reverses, stewardship and philanthropy, which have proved that strong religious faith is a greater fortune, more to be desired than riches, or any other assets.” This is the story of George Pepperdine (1886-1962), founder of Western Auto Supply and, later, Pepperdine University in Southern California. Pepperdine was a noted businessman, philanthropist, and a lifelong member of Churches of Christ.https://digitalcommons.pepperdine.edu/heritage_center/1002/thumbnail.jp

Wearing Surface Testing and Screening: Yukon River Bridge

There is a demand and a need for cheaper and alternative surface coverings in environments with high temperature fluctuations. Our design for an alternative surface covering involves a basic twopart component epoxy with the addition of a solvent. The purpose of the solvent is to disrupt the reaction that forms the ordered chains to form a more disordered crystalline structure. The solvent in the finished product is 3% by volume of isopropyl alcohol. This mixture of epoxy and solvent has higher impact strength than epoxy alone, as well as a much lower brittle transition temperature of 27°C compared with 10°C for epoxy. An environmental chamber, tensile tester, Charpy impact tester, and 4- point bending test were used to determine these conclusions. The final product can be tailored with different aggregates to fit a specific need, such as decking surface material to coat the wooden planks on the Yukon River Bridge.Table of Contents Table of Figures ............................................................................................................................................. ii List of Tables ................................................................................................................................................ iii Abstract ........................................................................................................................................................ iv Executive Summary ....................................................................................................................................... v 1. Introduction .............................................................................................................................................. 1 1.1 Yukon River Bridge Project 2006 ......................................................................................................... 1 1.2 Yukon River Bridge 2011 ..................................................................................................................... 3 2. Scope of Work ........................................................................................................................................... 3 Part 1 ......................................................................................................................................................... 3 Part 2 ......................................................................................................................................................... 3 3. Test Results and Data ................................................................................................................................ 4 Part I .............................................................................................................................................................. 4 3.1 Project Basis ........................................................................................................................................ 4 3.2 Methodology ....................................................................................................................................... 6 3.3 Results/Future Work ........................................................................................................................... 6 3.3.1 Charpy impact tests ..................................................................................................................... 6 3.3.2 Tensile tests ................................................................................................................................. 9 3.4 Chemical Theory ............................................................................................................................... 11 3.5 Facilities............................................................................................................................................. 14 3.6 Materials Tested ............................................................................................................................... 16 Part II: .......................................................................................................................................................... 18 3.7 Collecting Data .................................................................................................................................. 18 3.7.1 Determining percent isopropyl alcohol (Figure 19) ................................................................... 18 3.7.2 Determining the number of seal coatings (Figures 21–25) ....................................................... 19 3.7.3 Wear testing ............................................................................................................................... 24 3.7.4 Application process on test planks ............................................................................................ 25 3.7.5 Conclusion of information gathered from collecting data......................................................... 30 3.8 Modification Made to the Planks ...................................................................................................... 30 4 What Went Wrong in the Experiment ..................................................................................................... 30 5 What Could Be Changed, Future Modifications....................................................................................... 31 References .................................................................................................................................................. 32 Table of Figures Figure 1: Yukon River Bridge. ........................................................................................................................ 1 Figure 2: ASTM standards. ............................................................................................................................ 5 Figure 3: Epoxy samples – temperature rise vs. impact strength. ................................................................ 7 Figure 4: Epoxy with kerosene samples – temperature rise vs. impact strength. ........................................ 8 Figure 5: Epoxy with isopropyl alcohol samples – temperature rise vs. impact strength. ........................... 8 Figure 6: Epoxy with isopropyl alcohol and sand samples – temperature rise vs. impact strength. ........... 9 Figure 7: Epoxy samples – extension vs. load. ............................................................................................ 10 Figure 8: Epoxy with isopropyl alcohol samples – extension vs. load. ....................................................... 10 Figure 9: Epoxy with acetone samples – extension vs. load. ...................................................................... 11 Figure 10: Basic structures in epoxy. .......................................................................................................... 11 Figure 11: First step of polymerization. ...................................................................................................... 12 Figure 12: Long chain epoxy molecule ........................................................................................................ 12 Figure 13: Epoxy mixed with acetone solvent ............................................................................................ 12 Figure 14: Alcohol and ketone reaction. ..................................................................................................... 13 Figure 15: Epoxy hydrogen bonding with isopropyl alcohol. ...................................................................... 13 Figure 16: Environmental chamber used to freeze the samples. ............................................................... 14 Figure 17: Instron tensile test apparatus. ................................................................................................... 15 Figure 18: Charpy ........................................................................................................................................ 15 Figure 19: Test samples 3–5%, 10%, 20% isopropyl alcohol. ...................................................................... 18 Figure 20: Resistance to moisture migration. ............................................................................................. 19 Figure 21: Test samples: no sealing, 1 sealing, 2 sealings, and 3 sealings submerged in water. ............... 21 Figure 22: (Weight/dry weight) vs. days boards soaked............................................................................. 22 Figure 23: (Weight/dry weight) vs. days boards soaked............................................................................. 22 Figure 24: Percent increase in weight vs. number of seal coatings. ........................................................... 23 Figure 25: Percent increase in weight vs. number of seal coatings. ........................................................... 24 Figure 26: Traction and wear test equipment. ........................................................................................... 25 Figure 27: Epoxy sample after the wear test. ............................................................................................. 25 Figure 28: Laying out bolt pattern. ............................................................................................................. 26 Figure 29: Drilling countersunk holes. ........................................................................................................ 24 Figure 30: Completed board though application process. ......................................................................... 26 Figure 31: Bur on PVC pipe ......................................................................................................................... 27 Figure 33: Planks drying after sealing ......................................................................................................... 27 Figure 34. Plank preparation before aggregate application. ...................................................................... 28 Figure 35: Planks drying. ............................................................................................................................. 29 Figure 36: Removing tape and cotton balls. ............................................................................................... 29 Figure 37: Chip in plank ............................................................................................................................... 29 Figure 38: Chip patched .............................................................................................................................. 29 Figure 39: Additional chip patched ............................................................................................................. 3

Architecture of the Short External Rotator Muscles of the Hip.

BackgroundMuscle architecture, or the arrangement of sarcomeres and fibers within muscles, defines functional capacity. There are limited data that provide an understanding of hip short external rotator muscle architecture. The purpose of this study was thus to characterize the architecture of these small hip muscles.MethodsEight muscles from 10 independent human cadaver hips were used in this study (n = 80 muscles). Architectural measurements were made on pectineus, piriformis, gemelli, obturators, quadratus femoris, and gluteus minimus. Muscle mass, fiber length, sarcomere length, and pennation angle were used to calculate the normalized muscle fiber length, which defines excursion, and physiological cross-sectional area (PCSA), which defines force-producing capacity.ResultsGluteus minimus had the largest PCSA (8.29 cm2) followed by obturator externus (4.54 cm2), whereas superior gemellus had the smallest PCSA (0.68 cm2). Fiber lengths clustered into long (pectineus - 10.38 cm and gluteus minimus - 10.30 cm), moderate (obturator internus - 8.77 cm and externus - 8.04 cm), or short (inferior gemellus - 5.64 and superior gemellus - 4.85). There were no significant differences among muscles in pennation angle which were all nearly zero. When the gemelli and obturators were considered as a single functional unit, their collective PCSA (10.00 cm2) exceeded that of gluteus minimus as a substantial force-producing group.ConclusionsThe key findings are that these muscles have relatively small individual PCSAs, short fiber lengths, and low pennation angles. The large collective PCSA and short fiber lengths of the gemelli and obturators suggest that they primarily play a stabilizing role rather than a joint rotating role