acontinuous time filter component like a capacitor or inductor. For this low-pass filter the effectis seen in the step response. Given a step input value ws the steady state value for x can beapproximated by recognizing the familiar geometric power series. ∞ ws x s = ws ∑ K3n = = 16 ws (9) n =0 1 + K3Unlike floating point numbers where the details involving precision are handled by a processorin silent fashion, with fixed point numbers the designer is responsible. To assist in this regard,Figure 12 is the so-called plumbing diagram for the example first order low-pass
insertion into the flow can be determined. Figure 3. Basic Pitot-static probe construction.Assuming steady one-dimensional flow of an incompressible frictionless fluid, the followingresult for fluid velocity can be derived from Bernoulli’s equation 7, 2(p Total − p Static ) V= (1) ρ Fluidwhere, V= Fluid velocity in m/s pTotal = Total pressure in Pa pStatic = Static pressure in Pa ρFluid = Density of fluid being
135 120 107 98 100 # of responses 87 80 74 60 40 20 0 1, No Influence 2 3, Significant Influence 4 5, Greatest Influence Response categoryFigure 2. Response Frequency for Father’s Influence DiscussionThe construction industry employs about 5.2 percent of all workers in the United States and theneed for graduates in CM is growing each year (U. S. Department of Labor, 2004). The nationalneeds have
the ispPAC10’s analog circuitry isbased on continuous-time, as opposed to switched-capacitor technology, filters implementedwith the ispPAC10 are not subject to the sampling and aliasing problems often encountered whenusing switched capacitor filters. Due to the frequencies used in the proposed experiments, it isunderstood that the sampling/aliasing problems associated with switched capacitors are far frombeing noticed, although this issue describes one feature of the ispPAC device that might beimportant depending on the application being developed. The ability to program the internalcapacitor values of the ispPAC10 allows the designer to realize thousands of distinct analogcircuits and filter characteristics from a given circuit architecture
expenditure of the country has increased from Tk. 100 billion in the early1990’s to more than Tk. 200 billion in 2004. Figure 1 shows a projection of the country’sconstruction output as a percentage of GDP1. Most of the construction works are in thepublic sector. Funding for a high percentage of construction projects come frommultilateral development agencies (MDA) like the World Bank or Asian DevelopmentBank. For large MDA funded projects, the usual practice to go for internationalcompetitive bidding. Most public contracts are awarded on the basis of the lowestresponsive tenders submitted by contractors. Local contractors are given a margin ofpreference to secure public sector tenders under MDA funding. One of the areas onwhich most of the
nation) and expect rebates approaching 50% for systems up to Page 12.651.310kW in size. For example, in just the past few years the CORE rebate program5 was offered bythe NJBPU - Office of Clean Energy that enabled the state to move its way up the ladder tobecome the U.S.’s second most abundant generator of photovoltaic energy. This is quite animpressive story of success since the solar insolation resources from the Sun’s light are notnearly as abundant in New Jersey as in some of the other states in the nation. It was new statepolicy that overcame the lack of solar resources and created the potential for state to possessreliable and
involves a nominal amount of research to be completed and the use ofcomputational modeling tools – this segment addresses the RO segment of the learning cycle.Soon after the assignments are completed, the teams conduct laboratory experiments to verifytheir solutions and to examine the validity and limitations of the analytical model – this segmentaddresses the AE segment of the learning cycle. A discussion of the consequences andapplications of the findings brings a tentative closure to the inquiry process. This step leads intothe lesson theme for the next real world inspired inquiry process.Thus, each inquiry-based lesson module is designed to proceed through the ‘problemidentification s theoretical analysis s computer modeling s design solution
). This sensor vs. intuitor category is seen by mostresearchers to be the most important of the four categories in terms of implications foreducation8,15,28. Table 1: Overview of MBTI Manner in Which a Person Interacts With Others E Focuses outwardly. Gains energy from others. Focuses inwardly. Gains energy from cognition I EXTROVERSION INTROVERSION Manner in Which a Person Processes Information S Focus is on the five senses and experience. Focus is on possibilities, use, big picture. N SENSING
+ + + + + 330 325 0 500 1000 1500 2000 2500 3000 3500 4000 Time (s) Figure 6. Temperature vs. Time Experimental Data (+) and Predicted by Equation 4 Multiplied by a Factor of 1.4 (hEXP = 8 W/m2K at TSURFACE = 352 K)Forced Convection Heat Transfer from an Upward Facing Horizontal PlateForced convection heat transfer occurs when the fluid surrounding a surface is set in motion byan external means such as a fan, pump or atmospheric disturbances. This study was concernedwith forced convection heat transfer from a
develops the course.Acknowledgement:This research is supported by National Science Foundation’s Science, Technology, Engineering,and Mathematics Talent Expansion Program under grant #0230425.The authors would like to extend their sincere thanks to the reviewers for their constructivecomments that have helped improve the presentation of the paper.Bibliography[1] Blackborad Inc, http://www.Blackboard.com[2] WebCT Inc, http://www.webct.com[3] S. Kuyath, “An Interactive Lecture for Web Based ET Classes”, ASEE Annual Conference, Boulder, CO, 2004.[4] R.G. Daniels, M. Crawford, and M. Mangum, “Web Based Interactive EE Lesson Development: A Modular Approach”, ASEE Annual Conference, Boulder, CO, 2004.[5] B. Butz, “IMITS
?” Journal ofEngineering Education, October 2001.2 Hodge, B. K. and W. G. Steele, “A Survey of Computational Paradigms in Undergraduate Mechanical Engineering Education,” Journal of Engineering Education, October 2002.3 Chapra, S. C. and R. C. Canale, Numerical Methods for Engineers, 5th ed., McGraw-Hill, 2006.4 Dietel, H. M. and P. J. Dietel, How to Program C++, 4th ed., Prentice-Hall, 2002.5 Estell, J. K., "The Faculty Course Assessment Report," Proceedings of the Best Assessment Practices VII Symposium, Rose-Hulman Institute of Technology, Terre Haute, IN, April 2005. Page 12.1367.7 Appendix
an ng S c o rk es n on st ru n n h ds r su nt se Sta ns
AC 2007-368: INDUCING STUDENTS TO CONTEMPLATECONCEPT-ELICITING QUESTIONS AND THE EFFECT ON PROBLEMSOLVING PERFORMANCEPaul Steif, Carnegie Mellon University PAUL S. STEIF Professor, Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, Pa Degrees: Sc. B. 1979, Brown University; M.S. 1980, Ph.D. 1982, Harvard University. Research area: engineering mechanics and education.Jamie LoBue, Carnegie Mellon University Undergraduate Student, Mechanical EngineeringAnne Fay, Carnegie Mellon University Director of Assessment, Eberly Center for Teaching Excellence, Carnegie Mellon University, Pittsburgh, PA Degrees: B.A. 1983, York University; Ph. D. 1990, University of California
AC 2007-195: TEACHING PSYCHROMETRY TO UNDERGRADUATESMichael Maixner, U.S. Air Force AcademyJames Baughn, University of California-Davis Michael Rex Maixner graduated with distinction from the U. S. Naval Academy, and served as a commissioned officer in the USN for 25 years; his first 12 years were spent as a shipboard officer, while his remaining service was spent strictly in engineering assignments. He received his Ocean Engineer and SMME degrees from MIT, and his Ph.D. in mechanical engineering from the Naval Postgraduate School. He served as an Instructor at the Naval Postgraduate School and as a Professor of Engineering at Maine Maritime Academy; he is currently a member of the
valve performed opened as expected with satisfactoryresults.Data Acquisition Board (DAQ):The NI USB-6211 DAQ was used with the LabVIEW™ software. This DAQ offers 16 analoginputs; 250 kS/s single-channel sampling rate; two analog outputs; four digital input lines; four Page 23.528.5digital output lines; four programmable input ranges (±0.2 to ±10 V) per channel; digitaltriggering; and two counter/timers10. Figure 4 shows a table of the connections. Figure 4. DAQ IntegrationWhen testing the DAQ with the ignition mechanism, the SignalExpress icon in LabVIEW™ wasemployed to automatically read the DAQ Board and
of the comments student submitted are provided below.“I really liked being able to see the video lectures. Sometimes I need to see things more thanonce.”“I have tried to make the video lecture work but thus far I feel it has been a hindrance to mylearning compared to what I get out of the normal (traditional) lectures on Wednesdays andFridays.”“The hybrid video lectures were in no way a substitute for live lectures.”The table below shows the mean average of each of the class assignments with equal weight aswell as the mean of the means. The final grade is based upon this score. In general, an A isassigned to averages in the 90’s, a B to 80’s, a C to 70’s, and a D to 60’s. Averages below 60receive an F and do not pass the course
recommendation P.800. Agreat reading material for students to understand the procedures and requirements of the mostimportant subjective and objective speech quality measurements is the paper “speech qualityassessment” by Loizou [17].Speech intelligibility is best measured subjectively by a panel of listeners, who will try toidentify words, phrases or sentences. One of the traditional tests is the modified rhyme test(MRT). It is designed by linguistic specialists in 1960’s and still used by audio and speechresearchers today [18]. MRT asks listeners to listen and select one of six words, half of whichdiffering by the initial consonants, and another half differing by the final initial consonants. Theoverall averaged recognition rate, the total number of
. Figure 2 – Non-inverting Amplifier CircuitStudents accomplish a simple design and do the following: 1. Derive the input-output relation: Vo = f(Vg,Rs,Rf,Rg). 2. Use VCC = 15 V, Vg = 1 V and Rg = 1 kΩ. Design a non-inverting amplifier (choose values of R s and Rf) with an output voltage of V o = 3 V such that the power dissipated in R s and Rf is less than or equal to 0.003 W. Measure Vo and verify that the input-output relation is satisfied. Show all your calculations.DIFFERENTIATORFigure 3 shows a differentiator circuit. Students derive the input-output relation using Page 24.132.6Laplace transforms and explain why input noise is
, Math, and Engineering Majors,” Journal College Student Retention, Vol. 5, No. 1, 2003, pp. 37–52.5. S. Brainard, S. Laurich-Mcintyre, and L. Carlin. “Retaining female and undergraduate students in engineering and science: 1995 annual report to the Alfred P. Sloan Foundation,” Journal of Women and Minorities in Science and Engineering, Vol. 2, No. 4, 1995, pp. 255-267.6. D. Farver and C. Gattis. (2006). “Development and implementation of a peer mentoring program for women in engineering,” Proc. of ASEE Annual Conf. & Expo., June 2006.7. M. Cavalli, L. Stanlake, and S. Tolbert, “Investigation of retention and perceptions among freshman engineering student”, Proc. of the North Midwest American Society for
cart. It should be pointed out that the high current level golf cart drivesystem is still under implementation with proposed completion in June 2013. So the projectspresented in this paper are all implemented with the lab-size emulated golf-cart drive system asshown in Figure 2. Figure 4 offline simulation model in Simulink Table 2: System parameters Motor Parameter Value Electromotive constant k E 0.0772 V/rad/s Electromagnetic torque constant k T 0.067 Nm/A Armature resistance Ra 0.7454
suggests a mechanism design to achieve higher deflection. The paper will discuss thefirst two models. In conclusion, the paper points out how engineering education could benefitfrom exposure and participation in such a design process even though students were not involvedin this study originally.IntroductionThermoelectric generators convert heat to electricity. Current geometry and materials used indesigns shown in figures 1 and 2 result to rigid devices. The geometry ensures no moving partswhile the materials provide a high figure of merit (ZT). ZT=S2σ/k, where k is thermalconductivity, σ is the electrical conductivity, and S is the Seebeck coefficient. The figure ofmerit, ZT, is dimensionless and is formed by multiplying Z with the average
ofoperating conditions for the heater and temperature control experiments but also allows for aninteresting experimental study of the 1st and 2nd laws of thermodynamics for a flow system.Table 2 shows example data and results that demonstrate that energy is conserved and the 2nd lawis not violated in this novel device. H and S values were evaluated assuming ideal gas withtemperature dependent heat capacity. Page 23.126.8Figure 6. Example temperature readings with vortex tube in operation.Table 2. Example vortex tube data and results. Inlet Cold stream Warm stream Total Air flow mol/s 0.142
- Page 8.762.2networked teams ([13] to [15]).Proceedings of the 2003 American Society for Engineering Education Annual Conference & Exposition.Copyright © 2003, American Society for Engineering Education.Specifically, our methodology suggests the following activities, or processes withcontinuous quality and requirement feedback-loops:§ Research and analyze the manufacturing needs, for all key processes, and then§ Develop a comprehensive system model.§ Create a pilot system, a prototype that you can realistically implement, validate, refine, then§ Create the full system as specified by your customer(s)/ sponsor(s) and then§ Validate/ test, support, maintain and educate all parties involved.In more detail, the process by which you
open-sourcecomputational. Then we have implemented over thirty open source, 3D browserreadable, interactive multimedia, web-enabled library cases, covering a wide range ofengineering technology, design, manufacturing, IT, management, and biomedicalengineering topics.Each case in this library first looks at the real-world customer requirement, then expertsoffer one or more solution(s) by explaining real-world solutions, working with realmachines, or processes, or systems, and / or engineering management tasks, and thendiscuss further development, service, maintenance, integration, connectivity and manyother issues with several feedback loops, sound methods, and practical examples. Duringthe discussion, as well as at the end each 3D multimedia
weekly two hour meetings throughout the semester, the course's dual purpose was toprovide group processing time where TFs could discuss course issues and problems and well asaddressing issues related to the successful teaching of college freshmen. For example, topicssuch as learning styles, classroom climate issues (gender and race/ethnicity), and studentdevelopmental theories are among the original topics still included in the current seminar.With the advent of ABET's new EC 2000 directives for the satisfactory education ofundergraduate engineers, greater emphasis has been placed on the role of teamwork in theengineering classroom.14 In the early 1990's, ENES 100 was likely to be the only team basedcourse that many engineering students could
their attitudes and opinions regarding theirfirst semester experience in engineering. This survey was first piloted and addresses factors ofmotivation, time conflicts, family support, academic preparedness, and academic progress. Thedatabase contains responses from 1060 students’ responses from 2 colleges of engineering.Introduction Less than 50% of students beginning in engineering continue in engineering and half ofthose leave during the freshmen year (Besterfield-Sacre, 1997) 1. In engineering, the annualgraduation rate decreased by approximately 20 percent in the 1980’s. (Board of EngineeringEducation-National Research Council, 1992) 2 Astin (1993) 3 found that only 43% of thefirst–year engineering students in his population
Session 2433 Honors Thesis Work in Renewable Energy for an Undergraduate Student Robert S. Weissbach, Timothy S. Meyers Penn State Erie, The Behrend CollegeAbstractRenewable energy has become an important area of research and development for bothenvironmental as well as economic reasons. At the academic level, it is possible to introducestudents to issues related to renewable energy. This paper discusses the effort one student has putin, as part of a thesis, to develop an economically feasible, self-sufficient, renewable energysystem for a
industry-standard data acquisition boards availableincluding A/D, D/A, digital I/O, quadrature encoders, counters, mouse, joysticks, etc. Thecapability for serial communication support Simulink is especially useful.ExamplesRobotic Visual ServoingAn experimental testbed was designed to test the controller and demonstrate the flexibility ofuncalibrated visual servo control of an uncalibrated robotic manipulator. The system consists of acolor camera, a two-link reconfigurable robotic manipulator, and a desktop PC running MATLABwith Simulink. The controller (implemented in an S-function) is a Gauss-Newton optimizationtechnique that utilizes system estimation [7]. A CMUCam5 provides color-tracking data of amoving colored object. The CMUCam features on
) examination are allowed to take the admission test. The screeningprocess permits 8000 students to sit for the admission test from a pool of approximately 40000applicants. Only about 1000 students are allowed to get admission after the admission test.There is no requirement for verbal interview for the undergraduate applicants.There are 26 seats for the foreign students in undergraduate level. The pre-requisite qualificationfor admission is HSC (Higher Secondary Certificate) or GCE A level or equivalent with goodgrades in mathematics, physics, and chemistry4.North-South University (NSU) was the country‟s first government-approved private institutionof higher education established in 1992. The university where the language of introduction isEnglish
- 24, 2012.5. Strong, S., & Smith, R. (2001). Spatial visualization: Fundamentals and trends in engineering graphics. Journal of Industrial Technology, 18(1), 1-6.6. Adanez, G. P, & Velasco, A. D. (2002). Predicting academic success of engineering students in technical Page 25.548.11 drawing from visualization test scores. Journal for Geometry and Graphics, 6(1), 99-109.7. Leopold, C., Gorska, R. A., & Sorby, S. A. (2001). International experiences in developing the spatial visualization abilities of engineering students. Journal for Geometry and Graphics, 5(1), 81-91.8. Hsi, S., Linn, M. C