The hypothesis that consumers use a two-stage procedure to maximize a utility function in which food items are strongly separable from non-food items is combined with prior information about food ...

In educational testing problems, some natural restriction on the coefficients may arise in maximizing the correlation or variance of linear combinations of sets of variables. In this article, two ...

Researchers have applied a recently developed technique to directly measure for the first time the polarization states of light. Their work both overcomes some important challenges of Heisenberg's ...

I previously talked about measurements (some) when I looked at the uncertainty in the distance to the Sun. One of the simple ways of determining the uncertainty of a calculated quantity is to use the ...

Flow cytometry has come a long way since it was first conceived by Wolfgang Göhde at the University of Münster in 1968. Originally known as Impulscytophotometrie, it became better known after a name ...

Value-at-risk and expected shortfall (ES) are ubiquitous in finance. They are used by banks and asset managers to estimate the risk of portfolios. Regulators use them to set capital requirements. To ...

Messenger ribonucleic acid (mRNA) is a single-stranded molecule of RNA that carries the instructions from DNA to create specific proteins. The main applications for mRNA include immunotherapy, protein ...

Tips for Selecting Structure, Process and Outcome Variables, and Measurement Tools Before selecting a measurement tool, it is helpful to identify the stage of APN role development (ie, which step of ...