Princeton hack

The bubbles from breaking waves play a significant role in transferring oxygen and other gases between the ocean and the atmosphere, which influences local weather patterns, regulates the global carbon cycle, and supports marine life.

Yet, global climate models do not capture all the physics that influence bubble-mediated gas transfer. Ruth will create an experimental setup through which he can control variables such as bubble size, the intensity of the turbulence, and the composition of the water to measure the oxygen content of water under conditions similar to those of breaking waves in the ocean.

Schneider will study the effectiveness of colloidal particles in providing a simpler and more efficient method for removing oily contaminants from groundwater aquifers. Sub-micron sized particles, commonly referred to as colloids, have been shown to bind to and remove oil from porous rocks, but the pathways to removal remain largely unknown.

As a result, scientists have little control over optimizing these processes in the field. Schneider will test two types of colloids: surface active colloids — which collect on the surface where oil and water meet — and non-surface active colloids, which do not. Zhao will examine how amorphous calcium carbonate ACC transforms into crystalline calcium carbonate CaCO3 , which is the main component of marine sediment.

Scientists rely on the composition and isotopic ratio of sediments to reconstruct the ancient climate. Because ACC transformation affects the final composition of calcium carbonate, a thorough understanding of how ACC evolves is necessary to modeling the paleoclimate. Hack graduated summa cum laude from Princeton and received his M.

In addition to serving on the boards of directors of several corporations, he has been a trustee of the Princeton Medical Center and Princeton Day School, and currently serves as a trustee of The Quebec-Labrador Foundation. The Hacks live in Princeton. The Otto A. Hack '03 Professorship in Finance will support the work of a distinguished scholar in Princeton's Bendheim Center for Finance.

Established in as an international resource for teaching, scholarship and innovation, the Bendheim Center brings together outstanding scholars in the field of finance and creates a venue where financial experts from academia, government and the private sector can meet regularly to exchange views and information.

Felten said he and his colleagues felt it necessary to publish the paper as quickly as possible because of the possible implications for the November midterm elections. About 80 percent of American voters are expected to use some form of electronic voting in the upcoming election, in which the makeup of the U. House will be decided, as well as 33 Senate seats and 36 governorships. While Felten wasn't able to test the new machine, he said he thought much of what he found would still apply.

The machine Felten tested, obtained in May from an undisclosed source, was the same type used across Maryland in its primary election Tuesday, according to Ross Goldstein, a deputy administrator with the state's Board of Elections. Goldstein said he couldn't comment on the report until he read it. Previous studies have claimed hacking vulnerabilities with the machines.

But Felten claims his study is the first time that an independent research group has obtained an actual machine and tested it extensively.