Liking or marking an object, event, or resource as a favorite is one of the most pervasive actions in social media. This particular action plays an important role in platforms in which a lot of content is shared. In this paper we take a large sample of users in Flickr and analyze logs of their favorite actions considering factors such as time period, type of connection with the owner of the pho...

valine, leucine, or isoleucine, have never been reported in the in vivo proton MR spectra from human brain tumors (2). The apparent weakness of the technique is the ubiquity of lactate, by virtue of its production during glycolysis, and the lack of correlation between measurable lactate levels and histologic grading of cystic tumors. More specific biochemical profiles are possible, though, with...

I stumbled into the crystal structure of Ire1 a few years ago when my lab had just solved the structures of several helical signaling oligomers formed by death domains. I was curious if others had observed similar structures in their systems andwhether these higher-order oligomers might tell us something new about molecular mechanisms in signal transduction. Ire1 is a receptor critical for the ...

Pink is for girls and blue is for boys, so says the traditional adage. But what about the boy who likes pink, or the girl who likes blue? This study aimed to assess the effect of color stereotypes on children’s memory and judgment. Children from two preschools were told the favorite colors of stimulus children, then asked to distribute colored toys to these children, and to verbally recall thei...

In 2003 Vladimir Nikiforov [7] began a line of research whose aim was to build an extremal theory of graphs based on spectral theory. We will discuss some of his results and in particular we will focus on a result of Babai and Guiduli [1] that gives a Kövari-Sós-Turán type upper bound on the largest eigenvalue of the adjacency matrix of a Ks,t-free graph. This spectral approach sheds new light ...