Stochastic volatility is the unpredictable nature of asset price volatility over time. It's a flexible alternative to the Black Scholes' constant volatility assumption.

Introduction After the WHO prequalified the first vaccine against mpox, we aimed to identify the influence of vaccine ...

Background The National Heart Failure Audit gathers data on patients coded at discharge (or death) as having heart failure as ...

Objectives In patients with chronic obstructive pulmonary disease (COPD), severe exacerbations (ECOPDs) impose significant morbidity and mortality. Current guidelines emphasise using ECOPD history to ...

Florida wildlife officials say the state's first black bear hunt in a decade killed 52 bears. The count was announced Tuesday. The hunt began Dec. 6 and ended Sunday. It ...

The economy defied concerns about a sluggish labor market and strained shoppers. The U.S. economy expanded more than economists expected over a recent three-month period, recording robust growth ...

Risk-neutral pricing walks the narrow line between arbitrage and incompleteness. The further markets stray from this line, the less effective the equivalence of price and expectation becomes as a ...

Markets largely price in a December Fed cut as inflation cools while equities and risk assets hold near recent highs. Debate now centers on the 2026 median fed funds rate and a divided FOMC, with ...

Eeny, meeny, miny, mo, catch a tiger by the toe – so the rhyme goes. But even children know that counting-out rhymes like this are no help at making a truly random choice. Perhaps you remember when ...

These policies let you invest your cash value directly in mutual fund-like accounts, but they also carry risks if the investments lose money Written By Written by Insurance Staff Writer, WSJ | Buy ...

Businesses must lead transformation, not just react to evolving consumer expectations and demands. Proactive leadership means anticipating future needs, innovating solutions, and leveraging technology ...

1 School of Marxism, Hangzhou Normal University, Hangzhou, Zhejiang, China 2 School of Public Administration, Hangzhou Normal University, Hangzhou, Zhejiang, China Introduction: Teacher expectations ...