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Objectives Work stress is a threat to the well-being of nurses in China and also globally, and many studies have been conducted on the risk factors for stress symptoms. However, research on the ...

The NBA season is more than a quarter of the way done, and it's becoming clearer which teams are likely to land lottery spots ...

For more than a decade, cloud infrastructure sat comfortably in the domain of engineering. It was framed as a technical enabler, both elastic and scalable. Finance signed the invoices, engineering ...

Abstract: Minimum variance beamformers are usually complemented with diagonal loading techniques in order to provide robustness against several impairments such as imprecise knowledge of the steering ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Somer G. Anderson is CPA, doctor of ...

A common experience all poker players have is swings between highs (winning) and lows (losing). This is known as variance, a mathematical term that signifies the deviation in a players’ bankroll in ...

ABSTRACT: The purpose of this study is to analyse the effects of financial subsidies on the productivity of public enterprises in Sub-Saharan Africa. Based on theories of public enterprise management ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Abstract: Cross-variance is a variance concept between two samples, where it is defined by using the second sample average to compute the first sample variance and reversely. In this paper we ...

A new data selection strategy guided by the Variance Promotion Score (VPS). VAS combines outcome variance and trajectory diversity to promote reward variance, stabilize policy optimization, and ...