Is At Least One Vitamin Helping Our Vasculature?

Is at least one vitamin helping our vasculature? Evidence for an important role of the endothelial vitamin d receptor in regulating endothelial function and blood pressure.

C ardiovascular risk factors such as diabetes mellitus, arterial hypertension, chronic smoking, and hypercholesterolemia are cardiovascular risk factors known to be associated with endothelial dysfunction, a condition that may predict long-term progression of atherosclerosis as well as cardiovascular event rates (for review, see Münzel et al 1) Although the mechanisms underlying this phenomenon...

“At least one” caching

We consider a variant of the caching problem, where each request is a set of pages of a fixed size, instead of a single page. In order to serve such a request, we require at least one of those pages to be present in the cache. Each page is assumed to have unit size and unit cost for getting loaded into the cache. We prove lower bounds on the competitive ratio for this problem in both the determ...

One Picture Is Worth at Least a Million Neurons

How many neurons participate in the representation of a single visual image? Answering this question is critical for constraining biologically inspired models of object recognition, which vary greatly in their assumptions from few "grandmother cells" to numerous neurons in widely distributed networks. Functional imaging techniques, such as fMRI, provide an opportunity to explore this issue, sin...

Clinical uncertainty: helping our learners.

Educate is one of our missions