262 research outputs found
Using IR Cameras Beyond Outreach: Motivational Projects for Engineering Students
Affordable infrared (IR) cameras provide a unique opportunity to motivate and enhance the education of engineering students. We used both IR and visible images from a FLIR E60 camera as an instructional vehicle in a digital image processing course, where students came from several engineering majors. These IR and visible images were used as the basis for an open-ended final project in the course. Assessment via both pre- and post-project questionnaires showed the project was a positive experience for the students, and helped motivate them to learn the material. This paper discusses the course, the camera, the project, and how effective it was to add this project to the course
Second Year of Using the Sidekick Basic Kit for TI LaunchPad with Elementary School Students
This paper describes a second year, follow-on study in which 4th and 5th grade students were exposed to engineering-related topics using a microcontroller, input/output circuitry, sensors, and the associated software coding needed to achieve a desired functionality of the hardware. The first year study was described in a paper presented at the 2017 ASEE Annual Conference. This second year study took students to the ânext level,â and showed very promising results
Elementary School Use of the Sidekick Basic Kit for TI LaunchPadâą
Despite the fact that the Sidekick basic kit for TI LaunchPadâą is intended for a much more experienced group of students, engineers, and makers, we have successfully introduced it into four classes of 5th grade elementary school students. This system mapped well onto the existing science standards of learning established by the State of Virginia. Additionally, the assessment of this process clearly demonstrated that effective learning is occurring
Using Student Knowledge of Linear Systems Theory to Facilitate the Learning of Optical Engineering
For students learning a new topic, being able to use existing knowledge and mental models in the context of the new topic leads to faster learning and a deeper understanding of the new concepts. This paper describes how teaching a graduate-level course providing an introduction to optical engineering for students from multiple engineering majors can be facilitated by using existing concepts and knowledge of linear systems theory, which are common to them all
Using Veteransâ Technical Skills in an Engineering Laboratory
After years of dissatisfaction with student knowledge and ability to use electrical test and measurement equipment (T&ME), a veteran with significant expertise using this equipment was placed in a Circuit Analysis Lab. This paper reports on this trial and its assessment results. Based on the overwhelming success of this program, this one-semester trial was extended for a second semester
An Affordable Software Defined Radio
This paper discusses the utilization of a relatively inexpensive wideband radio receiver in combination with a digital downconverter (DDC) based data recorder to capture and record real world radio signals. The resulting in-phase (I) and quadrature (Q) data files are then imported intoMATLAB for processing. This batch processing of real world radio signals allows for a tremendous amount of classroom flexibility in the discussion of software defined radio topics
Search for supersymmetry with a dominant R-parity violating LQDbar couplings in e+e- collisions at centre-of-mass energies of 130GeV to 172 GeV
A search for pair-production of supersymmetric particles under the assumption
that R-parity is violated via a dominant LQDbar coupling has been performed
using the data collected by ALEPH at centre-of-mass energies of 130-172 GeV.
The observed candidate events in the data are in agreement with the Standard
Model expectation. This result is translated into lower limits on the masses of
charginos, neutralinos, sleptons, sneutrinos and squarks. For instance, for
m_0=500 GeV/c^2 and tan(beta)=sqrt(2) charginos with masses smaller than 81
GeV/c^2 and neutralinos with masses smaller than 29 GeV/c^2 are excluded at the
95% confidence level for any generation structure of the LQDbar coupling.Comment: 32 pages, 30 figure
The new ALEPH Silicon Vertex Detector
The ALEPH collaboration, in view of the importance of effective vertex detection for the Higgs boson search at LEP 2, decided to upgrade the previous vertex detector. Main changes were an increased length (±20 cm), a higher granularity for rÏ view (50 ”m), a new preamplifier (MX7 rad hard chip), a polymide (upilex) fan-out on z side to carry the signals from the strips to the front-end electronics outside the fiducial region reducing consequently the passive material in the central region by a factor of two. The detector, the running experience and its performance will be described
The new ALEPH Silicon Vertex Detector
The ALEPH collaboration, in view of the importance of effective vertex detection for the Higgs boson search at LEP 2, decided to upgrade the previous vertex detector. Main changes were an increased length (±20 cm), a higher granularity for rÏ view (50 ”m), a new preamplifier (MX7 rad hard chip), a polymide (upilex) fan-out on z side to carry the signals from the strips to the front-end electronics outside the fiducial region reducing consequently the passive material in the central region by a factor of two. The detector, the running experience and its performance will be described
Jet size dependence of single jet suppression in lead-lead collisions at sqrt(s(NN)) = 2.76 TeV with the ATLAS detector at the LHC
Measurements of inclusive jet suppression in heavy ion collisions at the LHC
provide direct sensitivity to the physics of jet quenching. In a sample of
lead-lead collisions at sqrt(s) = 2.76 TeV corresponding to an integrated
luminosity of approximately 7 inverse microbarns, ATLAS has measured jets with
a calorimeter over the pseudorapidity interval |eta| < 2.1 and over the
transverse momentum range 38 < pT < 210 GeV. Jets were reconstructed using the
anti-kt algorithm with values for the distance parameter that determines the
nominal jet radius of R = 0.2, 0.3, 0.4 and 0.5. The centrality dependence of
the jet yield is characterized by the jet "central-to-peripheral ratio," Rcp.
Jet production is found to be suppressed by approximately a factor of two in
the 10% most central collisions relative to peripheral collisions. Rcp varies
smoothly with centrality as characterized by the number of participating
nucleons. The observed suppression is only weakly dependent on jet radius and
transverse momentum. These results provide the first direct measurement of
inclusive jet suppression in heavy ion collisions and complement previous
measurements of dijet transverse energy imbalance at the LHC.Comment: 15 pages plus author list (30 pages total), 8 figures, 2 tables,
submitted to Physics Letters B. All figures including auxiliary figures are
available at
http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HION-2011-02
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