8,019 research outputs found
Road Map to Successful Chicago Schools
Based on stories from 10 Chicago schools, this report shows how some urban public schools have improved teaching and learning, upgraded the school environment and connect the school with the community
Ongoing magnetic monopole searches with IceCube
The IceCube collaboration has instrumented a cubic kilometer of ice with
photo-multipliers. While mainly developed to detect Cherenkov light, any
visible light can be used to detect particles within the ice. Magnetic
monopoles are hypothetical particles predicted by many theories that extend the
Standard model of Particle Physics. They are carriers of a single elementary
magnetic charge. For this particle, different light production mechanisms
dominate from direct Cherenkov light at highly relativistic velocities
, indirect Cherenkov light at mildly relativistic
velocities , luminescence
light at low relativistic velocities , as well as catalysis of proton decay at non relativistic
velocities . For each of this speed ranges,
searches for magnetic monopoles at the IceCube experiment are either in
progress or they have already set the world's best limits on the flux of
magnetic monopoles. A summary of these searches will be presented, outlining
already existing results as well as methods used by the currently conducted
searches.Comment: Conference proceedings from 6th International Conference on New
Frontiers in Physics (ICNFP 2017) from August 17th to 29th of 2017 at the
Conference Center of the Orthodox Academy of Creta (OAC) in Kolymbari
(Crete), Greece, 8 pages, 8 figure
Issues related to line-oriented flight training
The use of a training simulator along with carefully structured, detailed, line trip scenarios was envisioned by NASA as a means of providing a controllable, repeatable way to observe line crews in a highly realistic simulation of their working environment and obtain better understanding operationally significant human factors problems and issues. Relevant research done by the agency and the results of full-mission simulation scenarios revealed potential implications for flight training. Aspects to be considered in creating training programs closely related to the actual line environment with a total crew application in real world incident experiences include: (1) operational, environmental, equipment, and crew problems in scenario design; (2) real time line oriented flight training operation; (3) performance assessment and debriefing; (4) instructor qualification and training; and (5) other issues such as ub un initial, transition, and upgrade training; procedures developent and evaluation, and equipment evaluation
Nonlinear Energetic Particle Transport in the Presence of Multiple Alfvenic Waves in ITER
This work presents the results of a multi mode ITER study on Toroidal Alfven
Eigenmodes, using the nonlinear hybrid HAGIS-LIGKA model. It is found that main
conclusions from earlier studies of ASDEX Upgrade discharges can be transferred
to the ITER scenario: global, nonlinear effects are crucial for the evolution
of the multi mode scenario. This work focuses on the ITER 15 MA baseline
scenario with with a safety factor at the magnetic axis of 0.986. The
least damped eigenmodes of the system are identified with the gyrokinetic,
non-perturbative LIGKA solver, concerning mode structure, frequency and
damping. Taking into account all weakly damped modes that can be identified
linearly, nonlinear simulations with HAGIS reveal strong multi mode behavior:
while in some parameter range, quasi-linear estimates turn out to be reasonable
approximations for the nonlinearly relaxed energetic particle profile, under
certain conditions low-n TAE branches can be excited. As a consequence, not
only grow amplitudes of all modes to (up to orders of magnitude) higher values
compared to the single mode cases but also, strong redistribution is triggered
in the outer radial area between 0.6 and 0.85, far above
quasi-linear estimates.Comment: 14 pages, 20 figures; To be published as special issue in PPCF
12/2015 for EPS Lisbon invited tal
Guidelines for line-oriented flight training, volume 2
Current approaches to line-oriented flight training used by six American airlines are described. This recurrent training methodology makes use of a full-crew and full-mission simulation to teach and assess resource management skills, but does not necessarily fulfill requirements for the training and manipulation of all skills
Guidelines for Line-Oriented Flight Training, Volume 1
Line-Oriented Flight Training (LOFT) is a developing training technology which synthesizes high-fidelity aircraft simulation and high-fidelity line-operations simulation to provide realistic, dynamic pilot training in a simulated line environment. LOFT is an augmentation of existing pilot training which concentrates upon command, leadership, and resource management skills. This report, based on an NASA/Industry workshop held in January, 1981, is designed to serve as a handbook for LOFT users. In addition to providing background information, guidelines are presented for designing LOFT scenarios, conducting real-time LOFT operations, pilot debriefing, and instructor qualification and training. The final chapter addressed other uses of LOFT and line-operations (or full-mission) simulation
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