Dear SIAM members,
June is kicking off in high gear! This month we’re preparing for the launch of the new and improved SIAM News Online website, which consolidates all of our online news channels (SIAM News, Connect, Blogs) into one place. Plus, the Annual Meeting (AN16) countdown has begun! Find out more about these and other SIAM happenings in this month’s issue!
Quantitative radiography is an imaging technique that uses electromagnetic radiation, such as X-rays, to gather quantitative data about the interior of nontransparent objects that vary in density and composition. For example, radiography is particularly helpful when reconstructing objects composed of multiple materials, such as different types of metal. In order to generate these images, most high-energy technologies pulse X-rays through the “scene” in question; objects in the scene absorb some of the rays, while a scintillator – which measures the strength of the passing X-rays – collects the rest and fluoresces (emits visible light) in response to the collected rays. Possible scenes include parts of the human body, thermal explosions, nuclear testing sites, and other applications of national security. The resulting images directly measure the intensity of visible light, yielding information about the objects’ internal structure.
Planktonic ecosystems make up the bottom nutritive levels of aquatic food webs, providing a vital source of food to many large marine organisms. Researchers build nutrient-phytoplankton-zooplankton (NPZ) mathematical models in order to describe the bottom trophic levels of aquatic ecosystems, aiding future research of phytoplankton.
Good news! A mobile app for the SIAM Conference on Mathematical Aspects of Materials Science (MS16), happening May 8-12 in Philadelphia, and SIAM Conference on Imaging Science (IS16), happening May 23- 26 in Albuquerque, is now available for download. Here’s how to get it:
Plug www.tripbuildermedia.com/apps/siam2016events into your mobile browser or computer. The link will automatically detect the type of device and take you to the right place to download the app. It can also be viewed in HTML5 if you connect using your computer. Read the rest of this entry »
The May issue of SIAM News is now officially available online! Learn more about mathematical models for fighting Zika Virus, mathematical matchmaking, the new national Guidelines for Assessment and Instruction in Mathematical Modeling Education (GAIMME), a new method for emotional interpretation based on nonlinear time series analysis and many other interesting topics: https://sinews.siam.org/
According to the Vision Council of America, roughly 75% of adults in the United States require some form of vision correction. Yet only 10% of Americans wear contact lenses. Studies estimate that one in four initial contact-users finds the lenses uncomfortable and stops wearing them. Thus, increasing the comfort level of contact lenses and expanding the market is a continual objective in the vision industry.
In order to understand the factors that contribute to lens comfort, it is important to study the solid and fluid mechanics of a lens’ interaction with an eye. In an article publishing this week in the SIAM Journal on Applied Mathematics, authors David Ross, Kara Maki, and Emily Holz design an equilibrium model to demonstrate the elastic stresses and suction pressure distribution between a soft hydrogel contact lens and an eye. Read the rest of this entry »