Purpose The development of e-grocery allows people to purchase food online and benefit from home delivery service. Nevertheless, a high rate of failed deliveries due to the customer’s absence causes significant loss of logistics efficiency, especially for perishable food. The purpose of this...

Heavily Er3+-doped TeO2–BaF2–La2O3–LaF3 (TBLL) glasses with low hydroxyl absorption (αOH−≈0.025cm−1 ) and high glass transition temperatures (Tg437℃) were prepared. The Raman spectra and differential scanning calorimetry (DSC) curves were measured to characterize the structural...

Modeling, Analysis, and Optimization for Mathematical Finance, Economics, and Risks is a critical domain that integrates mathematical theory with practical applications to address the complexities of modern financial and economic systems. This special issue focuses on recent studies that are...

This paper demonstrates how adding nominal wage rigidity to a standard sticky price model can create a mechanism by which increases in government spending cause increases in consumption. The increase in output arising from government purchases puts upward pressure on the price level. At a fixed...

This paper decomposes the causal effect of government defense spending into: (i) a local (or direct) effect, and (ii) a spillover (or indirect) effect. Using state-level defense spending data, we show that a negative cross-state spillover effect explains the existing simultaneous findings of a...