Researchers have developed a novel set of equations for heat propagation that explain why and how heat propagation can become fluid-like, rather than diffusive. These 'viscous heat equations' show how heat conduction is not only governed by thermal conductivity, but also by thermal viscosity. The theory is in striking agreement with pioneering experimental results in graphite published last year and may pave the way for the design of more efficient electronic devices.
Researchers of Peter the Great St. Petersburg Polytechnic University (SPbPU) in collaboration with colleagues from the Physikalisch Technische Bundesanstalt (PTB) and a number of German scientific organizations, calculated previously unexplored effects in atoms. The results were published in the PHYSICAL REVIEW A, highlighted as an Editor's Choice article.
News aggregators help to simplify consumers' search for news stories by gathering content based on viewing history or other factors. Commonly used aggregators include Google News, Yahoo! News, and others. They offer links to news stories published by news outlets and save consumers considerable time and effort in finding news.
Researchers from Dartmouth and the Massachusetts Institute of Technology (MIT) have developed an original approach to flight scheduling that, if implemented, could result in a significant increase in profits for airlines and more flights that align with passengers' preferences. The approach is presented in a paper, 'Airline Timetable Development and Fleet Assignment Incorporating Passenger Choice,' recently published in Transportation Science, the leading journal in the field of transportation analysis.
How long has it been since you logged onto a Web site and you were prompted to decide whether to opt out of 'cookies' that the site told you will enhance your online experience? Minutes? Hours?
Antonie J. Jetter, associate professor of Engineering and Technology Management at Portland State University, studied the wisdom of crowds theory. Jetter found diverse crowds of local natural resource stakeholders can collectively produce complex environmental models very similar to those of trained experts. "I am excited about the possibilities for other complex systems," Jetter said.
Eating out, ordering in or carrying out? Most Americans indulge in some form of restaurant eating. Consumers believe that cleanliness at these establishments is a key factor in determining where they satisfy their cravings.
A team of scientists, led by scholars from the Max Planck Institute for the Science of Human History, has published a new version of the Database of Cross-Linguistic Colexifications (CLICS), covering lexical associations in more than 3,100 languages varieties. The new version of the database offers lexical data on an unprecedented scale and provides a detailed, reproducible workflow for data aggregation, allowing scholars from all over the world to contribute to future versions.
Harvard scientists have observed a massive, wave-shaped gaseous structure made up of stellar nurseries, forming one of the largest coherent structures ever observed in our Galaxy. Dubbed the 'Radcliffe Wave,' the tremendous structure is surprisingly close to the sun, given that this is the first time it has been observed. The findings were made possible by a new 3D map of our neighborhood in the Milky Way, enabled by open data gathered by European and American space and ground observatories.
The popularity of bike-share systems has grown in popularity thanks to the younger, more environmentally conscious generation. While they have garnered considerable attention in cities from Paris to Washington, D.C., their promise of urban transformation is far from being fully realized.