Conference Session

Issues in Digital Signal Processing

Collection

2005 Annual Conference

Authors

Thad Welch; Robert Kubichek

, “Communications Measurement Laboratory.” This new course was designed to reinforce student knowledge of their course work in signals and systems, digital and analog communication systems, and digital signal processing. The primary course objectives were to familiarize students with vector signal analysis and develop a thorough understanding of I and Q-based demodulation techniques. This paper provides an overview of this course and describes student projects that utilize a vector signal analyzer (VSA) to detect, localize, and record decimated I and Q data as would be available at the output of an intermediate frequency (IF) analog-to-digital converter (ADC) stage of a software defined radio (SDR).1 IntroductionThe

Conference Session

Improving Mechanics of Materials

Collection

2005 Annual Conference

Authors

Ali Mohammadzadeh

difficulty to visualize and understand. The objective ofthis paper is to help students to understand and reinforce their comprehension of thesefundamental concepts of solid mechanics by introducing them to the 3 different approachesoutlined and discussed here.An L-shaped high strength aluminum beam, E = 10.4E6 psi, cantilevered at one end and subjectto a concentrated load P at the free end (Figure 1) is used to teach these 3 fundamental concepts. S Z Y α Q X Strain gage rosette L

Conference Session

Thermodynamics, Fluid Mechanics

Collection

2005 Annual Conference

Authors

B.K. Hodge

(1) γ 2g  D  gwith f the friction factor and K and CfT the minor losses [3]. Conservation of mass appears as Q = QA = QB (2)In Equation (1), expressions for the friction factor and fully-rough friction factor are needed. Inintroductory fluid mechanics courses, the Moody diagram [2] is often used to present thefunctional dependence of friction factor, f, on the Reynolds number, Re D = ρVD µ , and therelative roughness, ε D . However, the Moody diagram is unhandy for computer-basedsolutions, and a closed-form expression is desired. In the laminar regime, the usual expression[2] is

Conference Session

Assessment Issues in 1st-Yr Engineering

Collection

2005 Annual Conference

Authors

Eric Soulsby

Using ‘Advising Contours’ for placement in first-year quantitative courses Dr. Eric P. Soulsby University of Connecticut School of Engineering Storrs, CT 06269AbstractPrior to 2004, the University of Connecticut required all students to take mathematics placementtests prior to enrolling in any quantitative course. Two tests were required: a Q-course Readinesstest and a Calculus Readiness test. These tests were offered online as a pseudo-course within aWebCT environment and were taken by students prior to attending an orientation

Conference Session

Emerging Trends in Engineering Education Poster Session

Collection

2005 Annual Conference

Authors

Guoping Wang

') then ……. Figure 1. An Asynchronous RESET/SET D Flip-Flop VHDL Model if (CLK'event and CLK='1') then if (SET=‘1') then QQ:='1'; elsif (RESET=‘1') then QQ:='0'; else ……. Figure 2. A Synchronous RESET/SET VHDL Model A D flip-flop with two-register Q, Q-complement outputs is synthesized from VHDLmodel in Figure 3, while a D flip-flop with one register Q, Q-complement outputs is synthesizedfrom VHDL model in Figure 4. Notice that in

Conference Session

Computers in Education Poster Session

Collection

2005 Annual Conference

Authors

Schinnel Small; Alicia Davis; Solomon Alao; Craig Scott; Yacob Astatke; Pamela Leigh-Mack

illustrates a comparison of the Likert values for theoverall class (including tablet PC users, notebook users and conventional paper and pencil users). 100% 80% 60% Strongly Agree Agree Disagree 40% Strongly Disagree 20% 0% 1 2 3 4 5 6 7 8 Q 9 Q0 Q1 Q2 Q3 Q4 Q5 16

Conference Session

Undergraduate Aerospace Labs/Design II

Collection

2005 Annual Conference

Authors

Jean-Michel Dhainaut

the form h( z , t ) = b0 {φh1 ( z ) qh1 (t ) + φh 2 ( z ) qh 2 (t ) + φh 3 ( z ) qh 3 (t )} (1)where φh1 ( z ), φh 2 ( z ) , and φh 3 ( z ) are modes of deformation. A comparison of flutterspeed obtained by using different number of modes (n=1,2…) of deformation will givesome indication of the degree of accuracy achieved. In this paper, two-degree of freedom(bending, pitch) are selected because they provides a system, which is not only easilyevaluated in physical terms but also from the computational point of view. Finally, thetwo-degree of freedom equations of motion can be derived using the Lagrange’s principleyielding to, ⎡ M hh b0 M hα b0 ⎤ ⎧ q&&h ⎫ ⎢M b

Conference Session

New Trends in ECE Education

Collection

2005 Annual Conference

Authors

Thomas Goodman; Maurice Aburdene

0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 pFigure 2. The average number of transmissions required to send one packet across a singlenetwork link. 1 0.9 0.8 0.7 0.6 q(1,2) 0.5 0.4 0.3 0.2 0.1 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 pFigure 3. The probability that

Conference Session

Systems Approach to Teaching ET

Collection

2005 Annual Conference

Authors

Robert Adams; Ken Burbank; James Zhang

, at a bit rate of 512 kbps. Consideringthat most students do not have any experience in building RF boards, we chose to use thecomponents from Mini-Circuits R as our system building modules. Key Mini-Circuits modulesincorporated in our design are listed in Table 2. In addition, Mini-Circuits amplifiers and filtersare also used to complete our design. Block diagrams of transmitter and receiver RF portionsare shown in Figures 1 and 2, respectively. Table 2. Components Used from Mini-Circuits R Part Description Frequency Range (MHz) ZFMIQ - 10M I & Q Modulator 9 - 11 ZFMIQ - 10D I & Q Demodulator

Conference Session

Information Integration

Collection

2005 Annual Conference

Authors

George Moore; Jeffrey Richardson; Michelle Perry

the microcontroller. Figure 1 illustrates a 4-bit counter and theassociated timing diagrams that might be built and tested in a fundamental digital course. Torefresh a student’s memory, an instructor could add a diagram similar to the one illustrated andadd animated arrows in PowerPoint to demonstrate the operation of the circuit. VCC U1A VCC U1B VCC U2A VCC U2B 4 15 9 11 4 15 9 11 16 J Q 14 12 J Q 10 16 J Q 14 12 J Q 10 K Q K Q

Conference Session

NSF Grantees Poster Session

Collection

2005 Annual Conference

Authors

Nirmal Khandan

Figure 5. Test Problem, TP-A Page 10.330.9“Proceedings of the 2005 American Society for Engineering Education Annual Conference & Exposition Copyright @2005, American Society for Engineering Education” Problem Concepts Problem variations schematic Given Find D1 D2 Continuity equation V1, D1, D2 V2 Q D1/D2 V1/V2

Conference Session

Undergraduate Aerospace Labs/Design II

Collection

2005 Annual Conference

Authors

Francisco Aguiniga; Hector Estrada

tensorial transformation laws derived using Figure 1. Theresulting stress transformation is: σ x  C 2 S2 − 2SC  σ L     2 σ y  = S C 2 2SC  σ T  (2) τ xy   SC − SC C − S  τ LT   2 2  where, C = cos θ and S = sin θ. With this result, the constitutive relation in terms of laminate coordinates is2: σ x  Q 11 Q 12 Q 16   ε x

Conference Session

Emerging Trends in Engineering Education Poster Session

Collection

2005 Annual Conference

Authors

Robert Throne

state model, we define q1 = x1 , and q2 = x&1 , and obtain the following state equations  q&1   0 1   q1   0   q&  =  −ω 2 + −2ζωn   q2   K ωn2  F  2  nClearly all of the parameters in the state variable model can be obtained from the transferfunction for this system.Two Degree of Freedom System. The two degree of freedom system we utilize can be modeledas shown in Figure 5. For our equations there must be at least two springs present. The transferfunction

Conference Session

Integrating Mathematics and Engineering

Collection

2005 Annual Conference

Authors

Ranjith Munasinghe

coefficients.Project ProblemsFirst five exercises are fairly straightforward. The purpose of exercise 1 will be apparent after theexercise 5.Exercise 1. Consider the linear differential equation y"+py '+qy = 0 with constant coefficients pand q. Let c1 , c 2 , c3 and c 4 be arbitrary real constants with c1c4 − c2 c3 ≠ 0. Show that u(x), theratio of independent solutions of the equation, takes one of the following three forms. c + c 2 tan(ax)Case I: If p2 - 4q < 0, then u(x) = 1 where a is a constant. c3 + c 4 tan(ax) c1 + c 2 e bxCase II: If p2 - 4q > 0, then u(x) = where b is a constant

Conference Session

Mathematics Curriculum in Transition

Collection

2005 Annual Conference

Authors

John Kaplan; Kathleen Kaplan

; Exposition Copyright ©2005, American Society for Engineering Education” N p j (t + 1) = ∑ p i (t ) ⋅ q ij (t ), for j = 1,2, K , N i =1 N p (t + 1) = 1j4243 ∑ i =1 pi (t ) ⋅ 12 3 qij (t

Conference Session

Engineering Education Research and Assessment II

Collection

2005 Annual Conference

Authors

Mary Frances Stewart; Malgorzata Zywno

abstractformulations? There were 14 “Visual” questions versus 18 “Verbal” ones and 19 “Sensing”questions versus 13 “Intuitive” ones. The analysis is shown in Table 7 and Table 8. Table 7: Frequencies for Pre-Post Scores for Visual and Verbal Type of Questions Visual Q.: Pre-test Visual Q.: Post-test Verbal Q.: Pre-test Verbal Q.: Post-test N 15 15 15 15 Mean 6.53 8.93 9.13 12.60 Median 6.00 9.00 8.00 12.00 Std. Deviation 2.61 2.87

Conference Session

Course and Curriculum Innovations in ECE

Collection

2005 Annual Conference

Authors

James Everly

on the quartz element, the connecting lead wires, together with stray capacitance to the surrounding case. Q = Overall energy loss in the crystal when it is being driven by an external source. It is equivalent to the Q of a capacitor or inductor.Figure 2 represents the electrical schematic of a quartz crystal with the various parametersidentified. Notice that the basic structure is a series resistance, inductance, capacitance (RLC)circuit comprised of Rs, Lm, and Cm. The crystal holder capacitance, C0, forms a parallelnetwork with the series RLC elements. Figure 2. Electrical Circuit Model of a Quartz CrystalThe sections that follow concentrate on the experimental setup with special emphasis on

Conference Session

Mechanics, Machine Design & Mechanisms

Collection

2005 Annual Conference

Authors

Kenneth Sawyers

considers the effect of a fixed load on the limit load.Here the propped cantilever supports a constant load Q and variable load P. P Q PU Q L/3 L/3 L/3The result, PU = 15MP / L - Q / 2, shows the effect of the fixed load is to reduce PU.The notes conclude with an example of a simply supported beam subject to a distributed load anda concentrated load. P q A L/3 B L/3 C L/3 DThe location of the plastic hinge is at C for P large relative to qL/3, and under the distributedload for the reverse case.Typical

Conference Session

Design Experiences in Energy Education

Collection

2005 Annual Conference

Authors

Robert Harder

for experimental andanalytical temperatures, where: Tx − T10 −q 1  q θx = and: Tx =   + + T3 T3 − T10 kπ  (.001083 − .002381x )  kπ (.001083)Procedure: 1.) Connect water entrance tube to faucet and water exit tube to drain, and then turn on cold water (may need to adjust water valves in order to insure flow rate is the same). Turn on ice point and connect thermocouple connection to voltmeter. Connect cartridge heater to power supply and apply no more than 70 watts and 120 volts 2.) Take mV readings at locations 3-10 and

Conference Session

Thermodynamics, Fluid Mechanics

Collection

2005 Annual Conference

Authors

Ali Mohammadzadeh

intensive properties at state 3 (v3 and P3) other properties at state 3 are lookedup from superheated R-134a table. Application of the First Law for the condenser gives .the heat loss from condenser to the surroundings ( Q H = −1.63kW ). The cyclecoefficient of performance is evaluated then as: kJ 1 min & 0.4ton × 212 × QC min 60s = 6.46 β cycle = = | W& comp

Conference Session

Innovative Teaching and Outreach

Collection

2005 Annual Conference

Authors

Sheldon Jeter

theunambiguous symbol CHX will be used. In principle the conductance is calculated by Q& ave C HX = (6) FG ⋅ LMTDAny heat transfer textbook will recite this formula where Q& ave is the average heat transfer rate, FG is the geometrical correction factor, and LMTD is the log mean temperature difference.The preceding measurement function is deceptively simple in appearance. In fact asshown below, both the heat rate and the LMTD are rather complicated. The best estimate of the heat rate is the average between the rate that heat isadsorbed by

Conference Session

Thermodynamics, Fluid Mechanics

Collection

2005 Annual Conference

Authors

Stephen McClain

combustor. kJ q in := h 3 − h 2a q in = 616.02 kg The First Law efficiency is then the specific net work over the specific heat input. wnet η 1 := η 1 = 35.847% q in An ideal-gas Brayton cycle with a pressure ratio of 12, a compressor efficiency of 85%, a turbine efficiency of 92%, an entrance air temperature of 300 K, and a maximum cycle temperature of 1200 K will produce a specific net work of

Conference Session

ABET Issues and Capstone Design

Collection

2005 Annual Conference

Authors

Cathy Qian; Ruben Rojas-Oviedo; Zhengtao Deng

accreditationcriteria 3(a-k) requirements, the Mechanical Engineering (ME) program at Alabama A&MUniversity (AAMU) was designed to meet additional requirements by the American Society ofMechanical Engineers, such as (l) an ability to apply advanced mathematics throughmultivariable calculus, and differential equations; (m) a familiarity with statics, linear algebraand reliability; (n) an ability to work professionally in both thermal and mechanical systemsareas including the design and analysis of such systems; (o) a knowledge of contemporaryanalytical, computational, and experimental practices; (p) a competence in experimental design,data collection, and data analysis; (q) a competence in the use of computational tools; (r) aknowledge of chemistry; and (s

Conference Session

Mathematics Potpourri

Collection

2005 Annual Conference

Authors

John Schmeelk, Virginia Commonwealth University Qatar Branch

againembeds it into the tempered distribution setting. The paper concludes with a very briefoverview on filtering frequency techniques.II. The Test Space SWe adopt the following notation conventions. For positive integers, qi, (1 ≤ i ≤ n ) , the nlength of q=(q1, q2,…, qn) is defined as q = ∑ q i . The absolute values in the paper also i =1use the same notation. The context of the notation will indicate the appropriate meaning. nThe Euclidean distance for x ∈ R will be denoted as a norm, x = n

Conference Session

Teaching Outside the Box in Civil Engineering

Collection

2005 Annual Conference

Authors

Zhiyong Zhao; Joe Hagerty; J. P. Mohsen

cases. Some presenters were given high scores for educational quality but somewhat lowerscores for quality of presentation. Apparently, not everyone has mastered all of the audiovisuals arts. Overall scoresdo not reflect an average of scores in the other aspects, in most cases. Totals of scores were compiled for eachaspect column for each case, as shown. Average ratings have been tabulated in the results at the bottoms of theaspect columns, and ranks have been established for the cases, as shown.Case L of I True to f Educ Q Qaul P overall Case L of I True to f Educ Q Qaul P overall1 10 10 10 9 10 2 6 8 7 8 8

Conference Session

ERM Potpourri

Collection

2005 Annual Conference

Authors

Erastus Njage; Alicia Davis; Solomon Alao; Craig Scott; Yacob Astatke; Bert Davy; Pamela Leigh-Mack; Masud Salimian

½ persons.The average daily water usage is estimated at 70 gallons per person. Assume that all water used is discharged to thesewer. The amount of water, Q, in ft3/sec, that a pipe flowing full can accommodate is given by Q = 0.432CD2.63S0.54 where C is a coefficient that depends on the roughness of the inside of the pipe, S depends on the slope of the pipeand D is the inside diameter of the pipe, measured in feet.. For this project concrete-lined pipe is to be used so that C= 120, and for the street S = 0.15ft/ft. a. Write Q as a function of D. b. If the pipe is only available in size of 2” to 24” in inside diameter in increments of 2”, plot Q as a

Conference Session

Improving Mechanics of Materials

Collection

2005 Annual Conference

Authors

Ing-Chang Jong

) A1where · denotes a dot product, and dr is the differential displacement of the body moving alongthe path C during the action of F on the body. If the force F is constant and the displacementvector of the body during the action is q, then the work done on the body is given by U1→ 2 = F ⋅ q = Fq& (2)where F is the magnitude of F and q& is the scalar component of q parallel to F. If we let the an-gle between the positive directions of F and q be φ and assume that both F and q are not zero,then the values of both q& and U1→ 2 are negative if and only if 90° < φ ≤ 180°. Work of a momentThe work U1→ 2 done by a moment M (or a couple of moment M) on a

Conference Session

New Approaches & Techniques in Engineering II

Collection

2005 Annual Conference

Authors

Bahman Motlagh; Walter Buchanan; Alireza Rahrooh

) is represented by the following z-transform: Page 10.128.7 “Proceedings of the 2005 American Society for Engineering Education Annual Conference &Exposition Copyright©2005, American Society for Engineering Education” so z 2 + s1 z + s2Hc( z ) = (21) ( z − 1)( z + r1 )After conversion, the transfer equation for the controller and plant is: Y ( z) Q( z − 0.362)( so z 2 + s1 z + s2 ) = (22

Conference Session

Energy Program and Software Tools

Collection

2005 Annual Conference

Authors

Michael R. Sexton; Mehmet Sozen

problemis shown in Fig. 1. Both of the mathematical models use the first law of thermodynamics forsteady flow case together with chemical equilibrium for the products of combustion, whichfollows from the second law of thermodynamics. The second law, which is the minimization ofGibbs free energy, was implemented in different but equivalent ways by the two authors. In whatfollows, we present the mathematical models used in these two approaches. Q& cv x lb-mole/s H 2 combustion chamber combustion

Conference Session

Innovative Topics in ChE Curriculum

Collection

2005 Annual Conference

Authors

Ann Marie Flynn

crude, Q = ρ ⋅ F ⋅ c p (Ti − To ) ; Q = 1.953x106 W Q L= U ⋅ 2πr2 ⋅ LMTD L = 1.172x105 m = 117.2 km at insulation thickness, t = 3 inches Find the length of pipe, L, traveled by crude before temperature drops from 70°C to 40°C when insulation thickness, t = 0 (i.e, r2=r1): L = 16.7km at t = 0 inches Additional results: L = 65.1km at t = 1 inch L = 96.4km at t = 2 inchesb.) Environmental hazards associated with rainforest deforestation: - Rainforests once covered 14% of the earth’s land surface; now they cover only 6% and experts estimate that the last remaining rainforests could be consumed within 40 years. - Nearly half of the world’s species of plants, animals and microorganisms will be