Auto-delivery is a subscription model widely employed in supply chains, whereby a supplier delivers products to a buyer (or multiple buyers) according to the buyer's choice of a constant shipping quantity to be delivered at prescheduled dates. The buyer enjoys a discount for the auto-delivery...

The recent trend of a surge in demand for cloud services has posed a challenging capacity expansion problem for the cloud providers: while the growths of demand for different capacity attributes (e.g., CPU and RAM) are time-varying and disproportionate, replenishments of these attributes are...

In recent years, there has been an increasing trend in supply chains to employ a “control tower” approach to improve supply chain performance. Such a strategy includes vendor- or supplier-managed-inventory (VMI or SMI) where the supplier takes over the control tower, and the other strategy...

This paper is concerned with a delayed fear-effect predator-prey system with diffusion under homogeneous Neumann boundary conditions. To analyze the impact of diffusion on the spatiotemporal dynamics, we first study the predator-prey system without time delay, in which the conditions for local...

When only short-term loans are available, innovative firms may become more reluctant to invest in long-term and highly risky investment projects (i.e., radical innovation). By exploiting the unique situation in China that patenting firms for the first time obtained patent-backed loans (PBLs),...

Solution processed fullerene (C60) films as the electron transport layers (ETLs) promise to substantially reduce the cost of the perovskite solar cells (PSCs). However, the self-aggregation nature of C60 when dissolved in a solvent with high solubility (e.g., o-dichlorobenzene, o-DCB) makes the...

Surface passivation is a promising technique to improve the power conversion efficiency (PCE) and stability of perovskite solar cells (PSCs). Upper surface passivation has been widely used to passivate surface traps which are responsible for interfacial recombination loss. The bottom surface (or...

Oxygen evolution reaction (OER) is one of the important anodic reactions in most of widely used electrochemical conversion devices . However, the four-electron transfer process in OER makes the reaction sluggish and reduces the efficiency accordingly. Although a lot of OER electrocatalysts have...

The paper explores options for a 2050 carbon free energy future for India. Onshore wind and solar sources are projected as the dominant primary contributions to this objective. The analysis envisages an important role for so-called green hydrogen produced by electrolysis fueled by these carbon...

In the literature on supply chain management (SCM), the multi-echelon stochastic inventory models with known demand distributions have played a fundamental role for developing firms’ collaborative strategies, including the optimal policy to maximize efficiency of the centralized supply chain...