Visit SIAM Blogs!

Posts Tagged ‘AN12video’

Finding answers in big data sets

 Philadelphia, PA—Whether you’ve watched an elaborate weather forecast, made an online purchase, or received personalized news stories in your inbox in recent years, you’ve likely seen “big data” in action.

Big data is everywhere these days, be it personalized ad targeting, weather and climate modeling, or flu trend analysis to mention just a few.

Ever-increasing amounts of data are now available thanks to many modern realities: e-commerce and transaction-based information that has been stored over the years,  data streaming in from growing social media activity and rising Web traffic, and sensor data from the increased use of digital sensors in industrial equipment, electrical meters, automobiles, and satellites, for example. With decreasing storage costs, archiving this data has also become easier than ever. Read the rest of this entry »

Why join SIAM?

At the SIAM Annual Meeting held in Minneapolis in July, SIAM members discussed the many reasons and benefits of being part of the SIAM community: from research collaborations and professional development to tackling global problems and engaging in scientific discussion. Find out why these members find their SIAM membership so valuable!

Elliptic Curve Cryptography and Applications

At the SIAM Annual Meeting held in Minneapolis in July, Dr. Kristin Lauter of Microsoft Research discussed Elliptic Curve Cryptography as a mainstream primitive for cryptographic protocols and applications. The talk surveyed elliptic curve cryptography and its applications, including applications of pairing-based cryptography which are built with elliptic curves. Lauter also discussed its applications to privacy of electronic medical records, and implications for secure and private cloud storage and cloud computing.

Watch a video overview of the talk and an interview:

Mathematics in Finance: Systemic Risk

At the SIAM Annual Meeting held in Minneapolis in July, Dr. George Papanicolaou of Stanford University surveyed a topic of great relevance today—models for systemic risk and the implications that can be drawn from them. Laying out the picture of an evolving system with a large number of interconnected components, he described Systemic Risk as the probability of overall failure of the system. Papanicolaou spoke about the effect of electronic trading and automated exchanges increase in increased liquidity and risk, illustrating the significance of systemic risk in current mathematical finance research.

Watch a brief video overview of his talk and interview:

Mathematics and the Ocean: Movement, Mixing and Climate Modeling

Emily Shuckburgh of the British Atlantic survey uses mathematical ideas from dynamical systems to study mixing in the Southern Ocean

Philadelphia, PA—Studying the dynamics of the ocean system can greatly improve our understanding of key processes of ocean circulations, which have implications for future climate. Can applying mathematics to the research help? Dr. Emily Shuckburgh of the British Antarctic Survey, speaking at the 2012 SIAM Annual Meeting, thinks the answer is an emphatic “yes.”

Dr. Shuckburgh described mathematical ideas from dynamical systems used by her group, along with numerical modeling and experimental observations, to analyze circulation in the Southern Ocean. The Southern Ocean is unique in that it connects three major ocean basins—the Pacific, the Atlantic and the Indian oceans—with a powerful current that circulates all the way around Antarctica. This circumpolar current travels from the North Atlantic, sinking down to the bottom of the ocean and coming up to the surface around Antarctica, thus connecting the deep ocean with the atmosphere above. When water from the deep ocean comes up to the surface, it can exchange heat and carbon dioxide from the atmosphere, thus making it highly significant for climate change. Read the rest of this entry »

Math, image processing and movie special effects

At the SIAM Annual Meeting held in Minneapolis in July, Tony Chan of the Hong Kong University of Science and Technology spoke about recent growth in the field of image processing due to the advent of inexpensive and integrated image capturing devices, which has led to massive data and novel applications. In a very interesting talk, he described how image processing has emerged not only as an application domain where computational mathematics provides ideas and solutions, but also in spurring new research directions. 2012 I.E. Block Lecturer Robert Bridson, in a very engaging lecture, demonstrated how a computer-generated effect, like a stormy ocean, is made to look real in movies by numerically solving physical equations describing the motion, bringing mathematics and scientific computing into the forefront of animation.

Watch a video recapping both talks and interviews with the speakers!

Watch an overview of the 2012 SIAM Annual Meeting

At the 2012 SIAM Annual Meeting held in July, over a thousand mathematicians and computational scientists gathered from all over the world in Minneapolis, Minnesota, to discuss the state of the art in a variety of disciplines in the mathematical sciences through invited presentation, prize lectures, minisymposia, and contributed papers and posters. Watch a brief recap:

SIAM Past President Doug Arnold on mathematical literature and scholarly publishing

At the SIAM Annual Meeting held in Minneapolis in July, SIAM Past President Douglas Arnold of the University of Minnesota addressed a very timely and relevant issue: problems facing scholarly publishing today, such as author misconduct and plagiarism, intentional manipulation of citation statistics, and the high price of journal subscriptions.

“Math literature is enduring,” he said, noting that citations in mathematical journals often go back decades, and emphasizing the need for mathematicians to take a stance on this important issue. “Refereeing is super-important in math because we believe in the truth.” He explained a few cases of plagiarism that should be very worrisome to the community, reinforcing the importance of tools like CrossCheck employed by SIAM Journals. He then turned his focus on impact factors and their skewed nature due to self-citations and self-references. Illustrating how impact factors can be greatly influenced by self-citations with a series of convincing graphs, he cautioned the audience to be more guarded about the authenticity of bibliometrics.

The final part of Dr. Arnold’s talk focused on his personal views on the influence of large commercial publishers and one in particular–Elsevier–which, in his opinion is affecting the publishing world with its non-competitive prices, journal bundling, and huge profit margins, all the while relying on unpaid volunteer labor. Lastly, he mentioned the need to redefine copyright laws in general, transferring more rights to authors and less to publishers. In a very engaging lecture, Dr. Arnold inspired a lot of food for thought about the future of mathematical publishing.

Watch a video recapping Dr. Arnold’s talk:

SIAM John von Neumann Lecture awarded to John Ball

The Society for Industrial and Applied Mathematics (SIAM) awarded the 2012 John von Neumann Lecture to Sir John Ball of the University of Oxford in recognition of his deep contributions to our understanding of the mechanics of materials via the calculus of variations and other branches of mathematical analysis.

The citation especially notes his pioneering work on existence theorems and constitutive models for nonlinear elasticity, cavitation in solids, irregular minimizers and material microstructure, and, more recently, defects in liquid crystals.

The John von Neumann Lecture is awarded each year by SIAM to a mathematician or scientist for outstanding contributions to the field of applied mathematical sciences and their effective communication to the community. Established in 1959, SIAM’s flagship lecture is given in honor of the Hungarian-American mathematician after whom it is named, and whose pioneering research encompassed the fields of mathematics, physics, economics, computer science, and statistics.

Professor Ball accepted the prestigious award from SIAM President Nick Trefethen at the Prizes and Awards Luncheon, following which, he delivered The John von Neumann Lecture, Liquid Crystals for Mathematicians, on Tuesday, July 10, at the SIAM Annual Meeting in Minneapolis, Minnesota.

An important and versatile interface for electronic visual displays in a wide range of equipment from calculators to television screens, liquid crystals are the working substance behind a multi-billion dollar industry. Representing a class of soft matter systems that exhibit properties intermediate to solid crystals and isotropic fluids, they present an intriguing subject for mathematical analysis. In a very engaging lecture, Dr. Ball described various branches of mathematics, including partial differential equations, the calculus of variations, multiscale analysis, scientific computation, dynamical systems, algebra and topology, that can explain the math behind liquid crystals. Watch a brief video recapping his prize lecture:

Read the rest of this entry »

Barbara Keyfitz receives awards for research and service in applied mathematics

The Society for Industrial and Applied Mathematics (SIAM) awards the SIAM Prize for Distinguished Service to the Profession to an applied mathematician who has made noteworthy contributions to the furtherance of applied mathematics on the national level. The 2012 award goes to Barbara Lee Keyfitz of The Ohio State University.

Professor Keyfitz is a fitting recipient of the prize, as evidenced by her long-term and pervasive advocacy of applied mathematics in a career spanning several leadership roles. As the Director of the Fields Institute in Toronto (2004-2008), Keyfitz revitalized applied mathematics programming with initiatives such as the successful Fields-MITACS Industrial Problem-Solving workshops. An innovative graduate industrial research internship program was created for students all over Canada during her term on the Board of Directors of MITACS-NCE (Network of Centres of Excellence), a program that has since expanded to cover all disciplines.  Closer links between SIAM’s US and Mexican communities are owed in part to Keyfitz’s efforts in organizing numerous SIAM-SMM (Mexican Mathematical Society) conferences.  She has served as President of the Association for Women in Mathematics (2005-2006), as SIAM Vice President for Programs (1998-2003), and is currently the President of ICIAM.

If her contributions to the field need any reinforcing, Professor Keyfitz also received this year’s AWM-SIAM Sonia Kovalevsky Lecture for her pioneering and seminal contributions to the field of hyperbolic conservation laws.  In collaboration with Herbert Kranzer, she introduced the novel and important notion of singular shocks and made the original study of their properties.  Her research group also spearheaded the revival of the rigorous treatment of transonic gas flow, now a very active research area.  Important applications of her work include aerodynamics and multiphase flow models in porous media. The AWM-SIAM Sonia Kovalevsky Lecture is awarded annually at the SIAM Annual Meeting to highlight significant contributions of women to applied or computational mathematics.

The Dr. Charles Saltzer Professor of Mathematics at the Ohio State University, Dr. Keyfitz was recognized for her contributions at the SIAM Annual Meeting held in Minneapolis, Minnesota from July 9-13. Dr. Keyfitz delivered the AWM-SIAM Sonia Kovalevsky Lecture, The Role of Characteristics in Conservation Laws, on Monday afternoon and accepted her awards the following day at the Prizes and Awards Luncheon. Watch a brief video recapping her prize lecture:

Read the rest of this entry »