Learn why correlation—not allocation—is the key to diversification, and how ETFs can help build portfolios with assets that truly move differently.

A **spike train** is the sequence of times at which a neuron fires an action potential. We represent it as a binary vector: `1` at each firing time, `0` otherwise. Below we simulate a simple **Poisson ...

The rooster thinks he summons the sun because the sunrise always follows his crow. Correlation, at its worst, is a very confident rooster. For decades, our data economy has run on the same illusion: ...

When it comes to constructing an investment portfolio, “negative correlation” is something of a holy grail. Diversification, investors are told, is about combining assets that behave differently. You ...

Will Arnett and Laura Dern add emotional heft to Bradley Cooper’s intimate comedy about a separated spouse who finds solace in stand-up. By Jeannette Catsoulis When you purchase a ticket for an ...

ABSTRACT: Pyrethrum (Chrysanthemum cinerariaefolium L.) is an industrial crop with complex morphology and diverse physico-mechanical properties that jeopardize the optimal design of precision ...

ABSTRACT: Survivors of Child Sexual Abuse (CSA) can develop Post-Traumatic Stress Disorder (PTSD), alterations in the prefrontal cortex, changes in electroencephalographic (EEG) activity, and lower ...

The Trump administration's take on Tylenol and autism has led to confusion. It has put doctors who treat people who are pregnant or families with young children on the front lines of helping patients ...

The semiconductor industry is entering an era defined by heterogeneous integration and complex packaging technologies. Innovations such as wafer-on-wafer bonding, chiplets, multi-stacked die (2.5D/3D) ...

Correlation coefficients range from -1 to +1, indicating the strength of relationships between variables. Investors use correlation coefficients for portfolio diversification to reduce risk.

Olivera Ciraj Bjelac, IAEA Department of Nuclear Sciences and Applications To support hospitals and specialists around the world in meeting their safety standards requirements, the IAEA has produced a ...