On most modern energy markets, electricity is traded in advance and a power producer has to commit to deliver a certain amount of electricity some time before the actual delivery. This is especially difficult for power producers with renewable energy sources that are stochastic (like wind and...

The identification of bias in election results due to partisan gerrymandering and redistricting manipulation is important to preserve functioning democracy. Many methods have been proposed but none have been proven superior. After an overview of existing methods, the paper looks at the...

Front Distribution Centre (FDC) is a new terminal warehouse which is closer to customer, and its location selection is crucial for e-commerce and customer time satisfaction. We introduce in this paper a joint distribution function of demand based on time and space and design a staged clustering...

A dynamic pre-positioning problem is proposed to efficiently respond to victims’ needs for relief supplies under uncertain and dynamic demand in humanitarian relief. The problem is formulated as a multi-stage stochastic programming model that considers pre-positioning with multi-stage...

This paper investigates a dyadic supply chain consisting of one downstream enterprise with mature emission reduction technology and one upstream enterprise with immature emission reduction technology, in which the downstream enterprise makes emission reduction efficiency improvement equity...

A not-for-profit organization's reported ratio of expenditures on program services to total expenditures is a key performance metric for many donors, which may lead the manager of a not-for-profit organization to manipulate this ratio. This paper presents a theoretical model to examine when and...

The Markowitz model is still the cornerstone of modern portfolio theory. In particular, when focusing on the minimum-variance portfolio, the covariance matrix or better its inverse, the so-called precision matrix, is the only input required. So far, most scholars worked on improving the...

We consider financial networks where agents are linked to each other with financial contracts. A centralized clearing mechanism collects the initial endowments, the liabilities and the division rules of the agents and determines the payments to be made. A division rule specifies how the assets...

This paper develops a finite approximation approach to find the solution $F(x)$ of integral equations in the form $F(x) = \xi(x)+\int_\mathbb{R} \kappa(x,u) dF(u),\forall x\in\mathbb{R}$, where the unknown distributional solution $F(x)$ defines the measure associated with the integration, and...

This paper addresses a new electricity-charging station location problem for congested intercity or regional networks, in which electric vehicles with a limited driving range require recharges for their long-distance trips. When the distribution of charging stations does not sufficiently cover...