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Events for January 22, 2009
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Role Of The Technical Witness In Litigation - Jan.22-23, 2008
Thu, Jan 22, 2009
Aviation Safety and Security Program
Conferences, Lectures, & Seminars
TWW 09-2
For more information and to register for Aviation Safety and Security Program courses, please visit http://viterbi.usc.edu/aviation.Audiences: Registered Audiences Only
Contact: Viterbi Professional Programs
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Some Recent Progress in Spatial Information Applications in Beijing Key Laboratory
Thu, Jan 22, 2009 @ 10:30 AM - 12:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Location: Hedco Pertroleum and Chemical Engineering Building (HED) - -116
Audiences: Everyone Is Invited
Contact: Janice Thompson
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Unlocking Heavy Oil and Unconventional Resources with Heat
Thu, Jan 22, 2009 @ 12:45 PM
Mork Family Department of Chemical Engineering and Materials Science
Conferences, Lectures, & Seminars
Mork Family Department of Chemical Engineering and Materials Science Distinguished Lecture SeriesPresentsProfessor Anthony KovscekDepartment of Energy Resources Engineering, Stanford University, Stanford, California 94305Abstract : TBA
Location: Olin Hall of Engineering (OHE) - 122
Audiences: Everyone Is Invited
Contact: Petra Pearce Sapir
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Torsional Effects on the Inelastic Seismic Response of Structures
Thu, Jan 22, 2009 @ 01:00 PM - 04:00 PM
Sonny Astani Department of Civil and Environmental Engineering
Conferences, Lectures, & Seminars
Oral Defense by:Mehran Mansuri, Graduate Student, Civil and Environmental EngineeringAbstract:To evaluate inelastic torsional response of buildings due to different parameters such as unsymmetrical distribution of mass or lateral load resisting elements in the plan of the structure or yielding and inelastic behavior of resisting elements and loss of the resistance of such an element during an earthquake, a full three-dimensional nonlinear dynamic analysis is a powerful tool to evaluate such a nonlinear response.
The results of nonlinear dynamic analyses of two actual steel moment frame buildings that were damaged during the 1994 Northridge earthquake subjected to couple of different recorded ground motions from Northridge and Loma Prieta earthquakes are presented and the importance of different parameters such as discontinuity of lateral resisting elements, unsymmetrical distribution of mass or resistance in the plan of structure, intensity and frequency content of earthquake ground motions, accidental eccentricity as prescribed by code and the effect of geometric nonlinearity (P-Delta) on the inelastic lateral-torsional response of structures is discussed. Response parameters considered include lateral story displacement, Interstory drift index, plastic hinge rotation demand and torsional rotation of each floor.
The analysis procedures use three-dimensional nonlinear dynamic analytical models developed for the PERFORM 3-D computer program.
Study of the results for different models with different eccentricities clearly shows the effect of inelastic torsion in comparison with elastic torsion on the response of structures. The torsional rotation of floors considered as a main parameter of torsional response of the building has an average increase of 30 to 60 percent for material nonlinearity. By adding geometric nonlinearity (P-Delta), this increases 70 to 100 percent of elastic torsional rotation. This clearly shows the inelastic torsional response of structures may be significantly underestimated by a linear dynamic analysis, especially for large value of mass or stiffness eccentricity and intensity of the ground motion.
Location: Kaprielian Hall (KAP) - 209
Audiences: Everyone Is Invited
Contact: Evangeline Reyes
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The Laminar Flame to Turbulent Flame to Detonation Transition: Studies of Non-Kolmogorov Turbulence
Thu, Jan 22, 2009 @ 03:00 PM - 05:00 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Elaine S. Oran Senior Research Scientist
Naval Research Laboratory Lecture Abstract "The transition from a propagating subsonic Laminar flame to a high-speed Turbulent flame and then to supersonic Detonation wave (the LTD transition) involves a series of often dramatic events involving changes in the nature of the reaction wave. Some of the events develop continuously whereas others appear suddenly and with little apparent warning. The LTD transition occurs in highly exothermic energetic materials, for example in hydrogen-air mixtures resulting from gas leaks at hydrogen production and storage facilities as well as in carbon-oxygen mixtures in white-dwarf stars which, after ignition, become thermonuclear supernovae. This presentation describes the properties of the LTD transition using videos made from numerical solutions of the multidimensional, unsteady, chemically reacting, Navier-Stokes equations. The discussion focuses on selected features of the flow, including: formation of a turbulent flame and the nature of the turbulence, creation of hot spots as the origins of detonations, effects of stochastic processes on our ability to make predictions, and comparisons between simulations and experimental data." Professor Oran, Gas Dynamics Laboratories, designs numerical methods for simulating complex fluid dynamic processes, and then uses these methods to solve complex fluid dynamic processes and a wide variety of other scientific and engineering problems. Her recent research interests include combustion and propulsion, rarefied gases and microfluidics, fluid turbulance, materials engineering, high-proformance computing and parallel architectures, computational science and numerical analysis, biophysical fluid dynamics, wave equations, and astrophysical phenomena such as supernova explosions and jets. Oran has authored over 200 refereed journal articles as well as many conference papers and presentatoins. She is also the co-author of the book Numerical Simulation of Reactive Flow (2nd edition, Cambridge Press, 2001).Location: Davidson Conference Center -Club Room 2nd Floor
Audiences: Everyone Is Invited
Contact: April Mundy
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Geospatial Information Technology and Robotic Vision
Thu, Jan 22, 2009 @ 04:00 PM
Thomas Lord Department of Computer Science
Conferences, Lectures, & Seminars
Speaker: Dr. Bingcai Zhang, BAE Systems, Engineering Fellow
Host: Prof. Cyrus ShahabiAbstract:
Geospatial information technology or 3D mapping is the technology that extracts most 3D geospatial data such as elevations and vector maps from digital images. In the last two decades, BAE Systems has developed advanced computer algorithms to automate 3D geospatial data extraction from digital images. These algorithms may be applicable to navigate a robot in urban environment and complex terrain. There are significant similarities between robot vision and 3D mapping, between human vision process and 3D image matching process. In this talk, I will discuss the challenges of this technology for both 3D mapping and robot navigation.I will show some practical examples in 3D images. I will also talk about opportunities of this technology in a world of global recession and aging population. I will bring in 3D glasses such that everyone has a chance to experience 3D imaging.Biography:
Dr. Zhang is an engineering fellow at BAE Systems, the premier global defense and aerospace company. He joined BAE Systems in September 1995 right out of University of Wisconsin-Madison, where he earned his Ph.D. in engineering college and MS in computer science. His research interests are: (1)geospatial information technology and 3D mapping; (2)robot vision and unmanned systems; and (3)3D geoweb search. He has held positions as chief architect, chief photogrammetrist, R&D manager, and engineering fellow with BAE Systems.Location: Seaver Science Library (SSL) - 150
Audiences: Everyone Is Invited
Contact: CS Colloquia
