[Todos] Recordatorio: Seminario del Instituto de Cálculo, mañana jueves a las 13 hs.

Mie Ago 15 18:07:30 ART 2012

>
> Seminario de Matemática Aplicada e Industrial del Instituto de Cálculo
>
> Jueves 16 de Agosto de 2012 – 13hs.
>
> Lugar: Instituto de Cálculo, Segundo Piso, Pabellón II, Ciudad
> Universitaria
>
> De 13:00 a 15:00, 2 charlas, a cargo de Gabriel Wainer (Profesor de
> Carleton University, Ottawa, Canadá y Profesor visitante del DC de la
> FCEN-UBA) y Kenneth Chelst (Profesor de Wayne State University, Detroit,
> USA)
>
> 13:00 hs: Gabriel Wainer, “Discrete-Event Modeling and Simulation with
> DEVS and Cell-DEVS” (en español)
>
> En esta charla se presentará  un método formal de modelización a eventos
> discretos, y su aplicación a diversos campos: problemas de la biología,
> del medio ambiente, de la física e informáticos (redes de computadoras,
> robótica, etc).
>
> 13:45 hs: Break (con sándwiches y bebidas)
>
> 14:00 hs: Kenneth Chelst, “A Value-Added Process for One-Time Decisions”
> (en inglés)
>
> En esta charla se mostrará la importancia de la utilización de
> herramientas analíticas en la toma de decisiones en diferentes ámbitos,
> donde están involucrados objetivos múltiples e incertidumbre.
>
> Resumen de la charla del Prof. Wainer:
>
> Recent advances in computer technology have influenced simulation
> techniques to become an effective approach to understand physical systems.
> In recent years, grid-shaped cellular models have gained popularity in
> this sense. In particular, Cellular Automata (CA) have been widely used
> with these purposes. CA have received much attention but CA can require
> large amounts of compute time, mainly due to its synchronous nature. The
> use of a discrete time base also constrains the precision of the model.
> Besides this, CA do not describe adequately most of existing physical
> systems whose nature is asynchronous.
>
> The Cell-DEVS formalism was defined in order to attack these problems.
> Cellular automata are defined using discrete variables for time, space and
> system states. Instead, Cell-DEVS is based on the DEVS formalism, a
> continuous time technique. The goal of Cell-DEVS is to build
> discrete-event cell spaces, improving their definition by making the
> timing specification more expressive. DEVS models are described using a
> hierarchical and modular specification, and different modeling formalisms
> were successfully mapped as DEVS (Petri Nets, Queuing Networks, Finite
> State Machines, etc.). Therefore, we can now build cellular models that
> can interact with others described using different modeling techniques.
> DEVS and Cell-DEVS formalisms were implemented in a modeling and
> simulation tool (CD++), which was successfully used to develop different
> types of systems: biological (ecological models, heart tissue, ant
> foraging systems, fire spread, etc.), physical (diffusion, binary
> solidification, excitable media, surface tension, etc.), artificial (robot
> trajectories, traffic problems, heat seeking devices, etc.), and others.
> The independence of M&S tasks made possible to run DEVS models on
> different environments (personal computers, parallel computers, real-time
> equipment, and distributed simulators) and middleware (CORBA, MPI, HLA,
> RT-CORBA, RT-Linux, and a wide variety of Operating Systems and
> programming languages).
>
> In this talk, we will introduce the main characteristics of the DEVS and
> Cell-DEVS formalisms, and will show how to model complex cell spaces in an
> asynchronous parallel environment. We will focus in showing how the
> application of these techniques can improve model definition, reducing the
> development times of software applications developed to study this kind of
> systems. We will also focus in describing how to create models that can be
> executed automatically in a parallel environment without any modifications
> to the original models, or user intervention. We will present different
> examples of application, and discuss open research issues in this area. We
> will then show some examples of the current use of DEVS, including
> applications in different fields (biology, physics, defense, industry, and
> embedded systems development). We will finally discuss current open topics
> in the area, which include advanced methods for centralized, parallel or
> distributed simulation.
>
>
> Resumen de la charla del Prof. Chelst:
>
> One survey reported that 45 percent of executives use intuition more than
> analysis to run their businesses. This talk begins with a review of case
> against intuition as a primary decision process for decisions involving
> significant uncertainty and multiple objectives. Examples of the types of
> decisions we are interested are: Which supplier to use to design and
> manufacture a major automotive subsystem? Which kitchen contractor to hire
> to remodel your kitchen? Which country to locate a computer screen
> manufacturer? Where to buy a house? When to upgrade technology? Typically
> these decisions occur infrequently and involve both hard data and
> subjective expert judgment.
> The talk will include a brief review of the standard analytic tools,
> Decision Trees and Multi-Attribute Utility theory. However, it will focus
> on the soft issues involved in utilizing these tools. These include,
> framing the decision, incorporating multiple perspectives, and obtaining
> multiple perspective buy-in. It will highlight concerns of forecasting
> bias and decision making bias.  We conclude with a discussion and
> illustration of the concept of value added decision making. A value-added
> decision process is capable of generating alternatives that are better
> than the original set of decision alternatives.  It is this last point
> that we believe is the strongest reason for replacing gut feel with a
> structured decision process.
>
> CV resumido del Prof Wainer:
>
> GABRIEL A. WAINER, SMSCS, SMIEEE, received the M.Sc. (1993) at the
> University of Buenos Aires, Argentina, and the Ph.D. (1998, with highest
> honors) at the University of Buenos Aires, Argentina, and Université
> d’Aix-Marseille III, France. After being Assistant Professor at the
> Computer Science Department of UBA, in July 2000 he joined the Department
> of Systems and Computer Engineering at Carleton University (Ottawa, ON,
> Canada), where he is now Full Professor. He has held visiting positions at
> the University of Arizona, LSIS (CNRS), University Paul Cezanne,
> University of Nice, INRIA Sophia-Antipolis (France), UCM (Spain) and
> others. He is the author of three books and over 260 research articles; he
> edited four other books, and helped organizing over 120 conferences,
> including being one of the founders of SIMUTools and SimAUD. He was PI of
> different research projects (funded by NSERC, CFI, GRAND, MITACS, Autodesk
> Research, IBM, Intel, INRIA, CANARIE, Precarn, Usenix, CONICET, ANPCYT).
> Prof. Wainer is the Vice-President Conferences, and was a Vice-President
> Publications and a member of the Board of Directors of SCS. He is Special
> Issues Editor of SIMULATION, member of the Editorial Board of IEEE
> Computing in Science and Engineering, Wireless Networks (Elsevier),
> Journal of Defense Modeling and Simulation (SCS), and International
> Journal of Simulation and Process Modelling (Inderscience). He is the head
> of the Advanced Real-Time Simulation lab, located at Carleton University's
> Centre for advanced Simulation and Visualization (V-Sim). He is also the
> Director of the Ottawa Center of The McLeod Institute of Simulation
> Sciences and chair of the Ottawa M&SNet. He has been the recipient of
> various awards, including the IBM Eclipse Innovation Award, SCS Leadership
> Award, and various Best Paper awards. He has been awarded Carleton
> University's Research Achievement Award (2005-2006), the First Bernard P.
> Zeigler DEVS Modeling and Simulation Award, and the SCS Outstanding
> Professional Award (2011). His current research interests are related with
> modelling methodologies and tools, parallel/distributed simulation and
> real-time systems. His e-mail and web addresses are
> <gwainer en sce.carleton.ca> and <www.sce.carleton.ca/faculty/wainer>.
>
>
> CV resumido del Prof Chelst:
>
> Kenneth Chelst is professor of operations research and Director of
> Engineering Management in the Department of Industrial and Systems
> Engineering at Wayne State University in Detroit, Michigan. He received
> the Ph.D. degree in operations research from M.I.T. In 2011 Professor
> Chelst was honored with the INFORMS Presidents’ Award for his work in high
> school mathematics and for the application of OR to public safety
> management. He is co-PI on Project MINDSET, a five-year $3 million NSF
> project to develop and implement a high school mathematics course that is
> driven by real-world scenarios and utilizes OR concepts that can be taught
> to a wide range of high school students who have completed the algebra
> curriculum. He is co-author Does this line ever move? Everyday
> Applications of Operations Research which has been translated into
> Spanish, Avanzara Esta Fila Alguna Vez?: Aplicaiones de la Investigacion
> de Operaciones. As Director of Engineering Management, he oversees a
> master’s degree program for Ford Motor Company engineers on a career path
> to technical leadership. Every year, he guides working engineers in the
> program as they address two or three strategic issues at Ford. One of
> these team projects facilitated a projected savings of $250 million and
> led to an Edelman Prize Finalist Award in 2000.  Dr. Chelst is co-author
> of the recently published, Value Added Decision Making for Managers.
>
>
>
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