We theoretically investigate the thermopower of silicene systems in an external electric field perpendicular to the silicene sheet. In the absence of the field, we estimate that the thermopower of pure silicene is of order ∼80 μV/K. When a finite field is applied, a comparatively big band gap...

We theoretically investigate electron tunneling through a dual-gated graphene heterostructure, in which a thin barrier layer is sandwiched between two graphene layers. We show that the perfect tunneling of electrons presented in a single layer of graphene (also known as Klein tunneling) could be...

In this paper, we propose a novel method for sparse logistic regression with non-convex regularization Lp (p 1). Based on smooth approximation, we develop several fast algorithms for learning the classifier that is applicable to high dimensional dataset such as gene expression. To the best of...

In this dissertation, we consider an inventory sharing and rationing problem in continuous-review, infinite-horizon, distribution networks. Unlike previous literature on inventory sharing, we model inventory sharing as a multiple demand classes problem in which each dealer faces two classes of...

In this dissertation, two research topics are investigated: the demand information asymmetry in a decentralized inventory sharing supply chain and the quality-based supplier selection. For the first research topic, previous literature on inventory sharing has assumed that retailers' demand...

Inventory sharing among decentralized retailers has been widely used in practice to improve profitability and reduce risks at the same time. We study the coordination of a decentralized inventory sharing system with n (n 2) retailers who non-cooperatively determine their order quantities but...

An empirical likelihood (EL) approach to inference on mean functionals with nonignorably missing response data is developed. The nonignorably missing mechanism is specified by an exponential tilting model. Several maximum EL estimators (MELEs) for the response mean functional are proposed under...

Nonparametric comparison for panel count data is discussed. For the situation, most available approaches require that all subjects have the same observation process. However, such an assumption may not hold in reality. To address this, a new class of test procedures are proposed that allow...