GAVNet Collaborative Curation

The virus flourishes by undermining the body's chemical defense system

The researchers investigated food consumption of the Huaca Prieta and Paredones peoples, two neighboring groups who lived less than half a mile apart. Participating were Tiffiny Tung, associate professor of anthropology, Larisa DeSantis, associate professor of biological sciences and earth and environmental sciences and Tom Dillehay, senior research professor and University Distinguished Professor of anthropology and religion and culture emeritus and Rebeca Webb Wilson University Chair Emeritus.

"Climate change and its enormous human migrations will transform agriculture and remake the world order - and no country stands to gain more than Russia."

Charles Darwin was very likely the first person to have understood nature in terms of a game played across deep time. I have wondered how much further the Chess-playing naturalist might have taken this metaphor if, like Kawabata, he had studied Go. Unlike Chess, where the objective is to expose and capture the King by eliminating pieces, in Go the objective is to capture territory by surrounding enemy pieces, called stones, and by protecting unclaimed area.

Optimization is a key tool in machine learning, where the goal is to achieve the best possible objective function value in a minimum amount of time. Obtaining any form of global guarantees can usually be done with convex objective functions, or with special cases such as risk minimization with one-hidden over-parameterized layer neural networks (see the June post). In this post, I will consider low-dimensional problems (imagine 10 or 20), with no constraint on running time (thus get ready for some running-times that are exponential in dimension!).

One way to harness solar energy is by using solar electricity to split water molecules into oxygen and hydrogen. The hydrogen produced by the process is stored as fuel, in a form that can be transferred from one place to another and used to generate power upon demand. To split water molecules into their component parts, a catalyst is necessary, but the catalytic materials currently used in the process, also known as the oxygen evolution reaction, are not efficient enough to make the process practical.

A strange thing has happened to men over the past few decades: We've become increasingly infertile, so much so that within a generation we may lose the ability to reproduce entirely. What's causing this mysterious drop in sperm counts-and is there any way to reverse it before it's too late?

In the chaos of 1960s Detroit, a fledgling police union laid the groundwork for a system that, to this day, constrains discipline for officers accused of misconduct.

Red ink isn't a problem as long as the country is spending on the right things.

Family incomes are not down much from Covid-19, and there is a risk of overheating the economy.