Suggested here is a simple graphical method for studying the goodness of fit in Cox's regression model for survival data. The method is easy to use, as it does not require the estimation of ...

This article gives a reformulation of the simplex method for quadratic programming having the advantage of generating tableaux with certain symmetry properties. It is proved that this method gives the ...

Let's take a first look at OpenAI's new o4 model and the codex CLI programming tool. Let's compare it to other AI programming tools like GitHub Copilot, Claude Code, and Firebase Studio... Leavitt ...

Forecasters have been keeping an eye on an area of disturbed weather to the south, now named Invest 93W, according to a National Weather Service notice issued Wednesday afternoon. Officials say they ...

Ultra-processed foods (UPFs) have become public enemy number one in nutrition debates. From dementia to obesity and an epidemic of "food addiction," these factory-made products, including crisps, ...

James Chen, CMT is an expert trader, investment adviser, and global market strategist. Thomas J. Brock is a CFA and CPA with more than 20 years of experience in various areas including investing, ...

With nearly two decades of retail management and project management experience, Brett Day can simplify complex traditional and Agile project management philosophies and methodologies and can explain ...

Vikki Velasquez is a researcher and writer who has managed, coordinated, and directed various community and nonprofit organizations. She has conducted in-depth research on social and economic issues ...