test is fed to a chopper. The steps may involve (a) creating a Simulink modelfor a pulse-width modulation control to run the dc motor at the desired speed, and (b)building the LabVIEW interface with controls for variables such as the reference speed ofthe motor (rpm), the reference frequency (Hz), numerical indicators to display thefrequency of the induction motor, the speed of the DC motor, and graphs for phasevoltage and phase current waveforms.The experimental setup is modeled after the one proposed by the University of Minnesota2, 3 . However, the setup along with the modification to the model with the dc motorassembly in the loop (HIL) is first correctly executed under the RT-LAB real-time systemsolution. This paper will give a brief
-based + +course. Train is moving South, slowing down - -The question involves two + 0common representations Train is stopped, about to move Northinstructors often use indescribing motion in one B. A cart travels in front of a motion sensor and slowsdimension: Positive and down. The acceleration graph for the motion isnegative signs to denote shown below.direction and graphs of thedifferent kinematics aquantities. In many texts,direction for 1-D motion isrepresented by positive and
briefly discuss it in small groups to make sure theyunderstood it. When they reached a gap, one of several different things might happen: (a) theinstructor might go through the solution at the board in traditional lecture format; (b) the studentsmight be given a short time (30 seconds–3 minutes) to try to fill in the gap; or (c) the instructormight skip the gap and tell the students to be sure they knew what went in it before they got tothe next exam. The class was told and periodically reminded that some of the questions andproblem segments in the handouts would show up on the exams, and they did. Activities weresometimes done by pairs or groups of three and sometimes by individuals, alternating among theformats for active learning outlined in
it based on various criteria, as shown in Figure 2-b. It can simulate the motion of alinkage, and display specific linkage analysis functions such as transmission angle, angularvelocity ratios, locations of instantaneous centers of rotation, and mechanical advantage (staticforces which can be compared to the dynamic force calculations). Once the kinematic model ofthe car suspension system has been built up in the FOURBAR program, the model is simulatedto determine the suspension kinematics and view the path of the instant center over some rangeof motion to provide a clear picture of the behavior of the coupler link. Also, the motionparameters can be easily changed to visualize such output motions as displacement, velocity andacceleration in
. Nordoes it give a statistical description of large populations.ConclusionInformal leaders on student teams have to manage the task and relationships. Successful informalleaders manage the task component by a) taking time to understand the task, b) being technicallycompetent, c) maintaining quality through questioning and informal assessment, d) keeping thegroup focused on the task.The observed informal leaders also managed team relationships, although they were lesseffective at it. At times other team members assisted in managing the relational component.Managing the relational aspect of teamwork involves a) creating and maintaining a collaborativeenvironment, b) exhibiting fairness and humility toward teammates, and c) using creativity
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program.Some plan to take one of the technical electives now being offered that include a travelcomponent. Still others are planning a full semester abroad. There were admittedly a number ofstudents that have chosen to satisfy the requirement with the coursework (Option B in Figure 1).It is too early in the implementation process to observe any definitive impacts of the requirementon educational outcomes and in fact, it may take several years before we can show specific Page 13.711.6“lessons learned.” When our paper is presented at the conference in June, we hope to be able toprovide further results regarding whether selection of the IE department by
design profile. 9. Compressive Strength: a) Understand the historical basis and the limitations of computing the required compressive strength. b) Compute the strength for a concrete mix with standard testing data considering modification of the standard deviation as appropriate. 10. Curing. a) Understand the process of curing and some of the critical factors influencing the resulting compressive strength including minimal w/c ratio, hydration, available moisture, and temperature. b) Understand the standard curing techniques of water curing and sealed curing. c) Recognize special
, Universal Learning Technologies, Boston, MA, 2007.7. Hannigan, T., Koenig, K., Austin, V., Okoro, E., “Shelving the Hardware: Developing Virtual LaboratoryExperiments,” Proceedings of the 2005 ASEE Annual Conference & Exposition, Portland, OR, June 2005.8. Hannigan, T., Koenig, K., Gassaway, B., Austin, V., “Revision and Translation of Existing Programs as a Toolfor Teaching Computer Data Acquisition and Control Systems Design and Implementation,” Proceedings of the2004 ASEE Annual Conference & Exposition, Salt Lake City, UT, June 2004.9. Hannigan, T., Koenig, K., Gassaway, B., Austin, V., “Design and Implementation of a Computer DataAcquisition and Control System for a Portable Wind Tunnel as a Benchmark Task in a Senior
AC 2008-548: FINITE ELEMENT LEARNING MODULES FORUNDERGRADUATE ENGINEERING TOPICS USING COMMERCIALSOFTWAREAshland Brown, University of the Pacific Ashland O. Brown is a professor of mechanical engineering at the University of the Pacific in Stockton, CA. He has held numerous administrative, management and research positions including Program Director, Engineering Directorate, National Science Foundation, Dean of Engineering at the University of the Pacific; Dean of Engineering Technology at South Carolina State University; Engineering Group Manager at General Motors Corporation: and Principal Engineering Supervisor, Ford Motor Company and Research Engineer Eastman Kodak Company. He
research, knowledge of subject, originality, …) (3) Presentation (poise, clarity, eye contact, platform manner, ...) (4) Visuals (slides ligible, tranparences to complicated, …) Scores are from A+ to F, on a scale of 100. 97.5-100 A+ 92.5-97.4 A 89.5-92.4 A- 87.5-89.4 B+ 82.5-87.4 B 79.5-82.4 B- 77.5-79.4 C+ 72.5-77.4 C 69.5-72.4 C- 59.5-69.4 D 0.0-59.4 F NOTE: Write your name and date in the provided space on the evalution sheet. In the evalution sheet mark right sign ( X ) in the ractangular box, which would evalute the skill of the presenter
necessary for a low speed open circuitwind tunnel. Finally, future studies relative to this particular model and problem will involvealternative cavity designs to alleviate the high pressure regions along with continuedinvestigation of the factors already part of this study. 1. Bell, J., & Mehta, R. (1988). Contraction design for small low speed wind tunnels (NASA CR 177488). Washington, DC: National Aeronautics and Space Administration. 2. Dejaegher, B., Smeyers-Verbeke, J., & Heyden, Y. V. (2005). The variance of screening and supersaturated design results as a measure for method robustness. Analytica Chimica Acta, 544(1-2), 268-279. 3. Fessler, H., et. al., (1995) Wind loading on articulated trailers during tipping. Proceedings of
starting point A outsidethe environment to a finishing point B inside the environment. This is to demonstrate that using aposition control strategy in this case may result in excessive contact force due to contact with theenvironment. In the second part of the experiment, a contact force controller shown in Fig. 13 isimplemented to control the contact force between the robot and the spring-damper environment.Fig. 14 illustrates the results obtained from one of the experiments where the use of the forcecontroller given in Fig. 13 allows for tracking of a desired force profile specified by the user. Page 13.881.12Fig. 12: Schematic of the
weight) 3 Engineering Sciences One fourth 4 Sequence of Engineering Analysis, Design, and One fourth Engineering Systems, Including the Necessary Technological Background 5 Options or Electives in (a) Humanistic and Social One tenth Sciences, (b) Basic Science, (c) Engineering Science, (d) Research or Thesis, (e) Engineering Analysis and Design, (f) ManagementHow responsive was the engineering curriculum and accreditation requirements to cultural andsocietal changes during this time period?During this time period there was
experience during the secondhalf, and the results of the second survey is to be used to improve the next offering of theinstrumentation project experience in spring-2008. Students are also assessed using directassessment tools for teamwork, oral presentation, final report, successful operation anddemonstration of the completed project, and design review meetings. Example rubrics used toassess teamwork and oral presentation are shown in Appendices A and B, respectively. Results Page 13.322.2of direct and indirect assessment instruments are archived for use as an input to the coursecontinuous improvement process and also as part of display materials
or server.In the survey students commented that they could replay particular sections of the video to clarify pointsthey might have missed in the first hearing. Many students were not fluent in English and often do notunderstand certain points made in an oral lecture. The recorded videos help to alleviate this problem.During the first course offering in spring 2007, all the students passed with the majority of the gradesbeing B or B+. During the second offering in spring 2007, again all students passed. The majority ofgrades were A and the class average of 87%.In the fall of 2007 the author had the opportunity to teach 18 of the same students from the spring 2007class in a conventional lecture course. The course title was "Artificial
Page 13.550.9The third null hypothesis was: There are no strong relationships between students’ self-regulativebehaviors (the total time spent and the level of Math skills mastered while using ALEKS) and thedegree of improved knowledge in Precalculus. To test the hypothesis, we analyzed the total time(measured in hours) students spent with ALEKS and the level of Math skills they mastered inALEKS obtained from the experimental group (section 1 and section 2). See Table 6.Table 6. Descriptive Statistics for Total Time Spent and Mastery Level Achieved in ALEKS. Total Time Spent b Math Skills MasteredSection 1 M 115.69 88.07(N = 41)a
to be generous and help students learn to deal with this type of evaluation. MBO is an unfamiliar rating system to most students, although some of them will have experienced it during summer internships. • Students who meet their objectives should receive a good grade. Meeting all of the objectives results in a score of 90%, which is the line between an “A” and a “B” at Grove City College. • Students are required to do excellent work and exceed their objectives if they want to achieve an “A”. • Students are likely to miss an objective or two, especially if the objectives are aggressive.Required Objectives Score= [(a x 100)+(b x 90)+(c x 75)+(d x 40)]/4 where: a = #Exceeded b
rise of the creative class. New York: Basic Books. 13. Spalter-Roth, R., N. Fortenberry, & Lovitts, B. (2007). The acceptance and diffusion of innovation: A cross-disciplinary approach to instructional and curricular change in engineering. Washington, DC: American Sociological Association. 14. iFoundry (2007). Whitepaper for an Illinois foundry for tech vision and leadership (Technical Report). iFoundry, University of Illinois at Urbana-Champaign, Urbana, IL. Page 13.684.8
value is not the goal, so they needto think of some means besides an equation to reach this goal. And in the latter case thestudent may simply think they can use the heuristic of process of elimination to rank thechoices on the basis of one of the parameters given.Ranking tasks can also be used to help students better understand equations as models—representations—of physical systems and how common sense ideas they have affect howthey try to apply equations. For example, the ranking task shown in Figure 4 was givenas a homework task in a general physics course enrolling engineering technology majorsafter Newton’s second law had been introduced. Two thirds of the students (19/29)produced a ranking of E first, A and D tied for second, C fourth, B
scans. Its main advantage over the comparably priced scanners Page 13.991.5 (NextEngine and Roland) is that the accuracy is better and there is no set object size limitation that can be scanned, though 8” to 10” in length may be ideal. Educational price for the E-Scan with SLIM software is $ 5000.b) Reverse Engineering Software: i) Rhinoceros10 This software connects with digitizers for capturing existing model geometry. Editing and aligning imported data is possible though most users choose a different program to do so. Manual interface is required for these operations. Third party vendor plug-in is
rack and hob cutter), can be conveniently mass produced because of their cutting surfaces are straight and therefore easy to sharpen.As their name suggests, involute gears have the active flanks of their teeth shaped as involutecurves of a common circle, called base circle. The involute of a circle is obtained by attaching ataut, inextensible string to this given circle, and tracing its free end as it is wound or unwoundonto the base circle18. Fig. 1 illustrates this concept, where BC represents the string, while theinvolute curve is the locus generated by the end point C of the string. y B
Assessment. http://www.abet.org2. Bloom, B, et al. Taxonomy of Educational Objectives. New York: Longmans Green, 1956.3. Carliner, S. E-Portfolios. ASTD, May 2006. 71 – 74.4. Carlson, P. Teaching a Course in the Ethics of Human Communication. 29th ASEE/IEEE Frontiers in Education,1999. 12d6 – 18.5. Cohn, E., and Hibbits, B. Beyond the Electronic Portfolio. Educause Quarterly, 4, 2004. 7 – 10.6. Hansen, E. Technological Expertise in Liberal Education. 36th ASEE/IEEE Frontiers in Education, 2006. S1H-17- 227. Heywood, J. Think…About How Others Think: Liberal Education and Engineering. 37th ASEE/IEEE Frontiers inEducation, 2007. T3C-20 -24.8. Jablokow, K. Engineers as Problem Solving Leaders: Embracing the Humanities. IEEE Technology and Society,Winter
/29/2006 at http://www.inspiration.com/productinfo/inspiration/index.cfm.[7] Jonassen, D., 1996, “Computers in the Classroom: Mindtools for Critical Thinking,” Merrill, Englewood Cliffs, NJ.[8] Marshall, B., Zhang, Y., Chen, H., Lally, A., Shen, R., Fox, E., and Cassel,L. N., "Convergence of Knowledge Management and E-Learning: The GetSmart Experience," jcdl, p. 135, 2003 Joint Conference on Digital Libraries (JCDL'03), Houston 2003.[9] MindManager by Mindjet Mindjet, last accessed 11/29/2006 at http://www.mindjet.com.[10] Novak, J. D. & A. J. Cañas, The Theory Underlying Concept Maps and How to Construct Them, Technical Report IHMC CmapTools 2006-01, Florida Institute for Human and Machine Cognition, 2006, available
), (4)where K1 and K2 are constant coefficients indicating linear relationships between voltageand motor shaft rotational speed and between current and motor torque. If the appliedcurrent and voltage are assumed constant over a finite interval, say ∆t, and equations (1)and (2) are discretized over k steps where t = k · ∆t we have va (k) = Ra ia (k) + K1 ω(k), (5) B cr (k) ia (k) = ω(t) + . (6) K2 K2Combining these two equations yields
a theme (for example: Computing & Creativity) which will be presented to the facultyfellows at the beginning of the session, followed by the faculty working on their individualcourse projects. In preparation for the pilot, each faculty member was asked to pose a researchquestion with regard to computing in their course and they will use the iterative processassociated with action research to test out potential strategies. According to Kemmis as cited byHopkins: Action research is a form of self-reflective enquiry undertaken by participants in social(including educational) situations in order to improve the rationality and justice of (a) their ownsocial or educational practices, (b) their understanding of these practices, and (c) the
, in May 2008, and published in the Transactions ofthe American Foundry Society8. Several coordination activities with the foreign counterpart arealready under way, including the planning of casting configurations, selection of molds andmaterials, and reservation of laboratory facilities.Figure 1 shows schematics of the gating configurations being considered. Figs. 1(a) and 1(b) arebottom-filled configurations, where the casting is filled by a horizontal runner bar from belowwith two and four ingates, respectively. A surge tank is present at the end of the runner bar,which is intended to prevent jetting through the gates and promotes a quiescent entry into thebottom of the plate casting. (a) (b
) (b)Figure 2. Representative images of the developed micromixer. (a) Results showing the simulation andexperimental cross-section images of the microchannel indicating fluid and particle mixing downstream, (b)scanning electron micrograph of the fabricated micromixer. Page 13.1042.5The first few weeks of the spring quarter were spent fabricating the designed micromixer inPDMS polymer. Although the undergraduate senior students working on this project wereprepared and trained them for working in a clean room environment, most of the fabricationprocess for this project was carried out by the graduate student working. This approach wastaken
specific courses focusing on energy were found listed on the website; this may bedue to the newness of the program.Energy Related Programs at the University of Colorado at BoulderAt the University of Colorado at Boulder (CU-B), there is no single curriculum with a strongemphasis on energy. The University of Colorado has a task force to study energy, with aRenewable and Sustainable Energy Initiative started in 2006 (http://www.colorado.edu/insidecu/editions/2006/2-28/chancellor.html; http://engineering.colorado.edu/industry/Energy.htm). Avariety of activities at the University that are related to energy are described briefly below.The Joint Center for Energy Management (JCEM) in the Department of Civil, Environmental, &Architectural Engineering
analog/digital, dynamic reconfiguration for implementing new functionality and obtaining better performance.In terms of ABET’s (a)-(k) criteria4, the following are the primary outcomes set for the course:(a) Ability to apply knowledge of mathematics, science and engineering.(b) Ability to design and conduct experiments, as well as, analyze and interpret data.(c) Ability to design a system, component, or process, to meet desired needs within realisticconstraints such as economic, environmental, social, political, ethical, health, and safetymanufacturability, and sustainability.(d) Ability to function on multidisciplinary teams.(e) Ability to identify, formulate and solve engineering problems.(g) Ability to communicate effectively.(k