Recent turmoil on global financial markets has led to a discussion on which policy measures should or could be taken to stabilize financial markets. One such a measure that resurfaced is the imposition of short-selling constraints. It is conjectured that these shortselling constraints reduce speculative trading and thereby have the potential to stabilize volatile financial markets. The purpose ...

background and objectives: operating room (or) scheduling is key to optimal operating room productivity. the significant uncertainty associated with surgery duration renders scheduling of surgical operation a challenging task. this paper proposes a novel computational stochastic model to optimize scheduling of surgeries with uncertain durations. the model considers various surgical operation co...

In opaque pricing certain characteristics of the product or service are hidden from the consumer until after purchase, transforming a differentiated good into somewhat of a commodity. Opaque pricing has become popular in service pricing as it allows firms to sell their differentiated products at higher prices to regular brand loyal customers while simultaneously selling to non loyal customers a...

Data envelopment analysis (DEA) is one of the most efficient tools for efficiency measurement which can be employed as a benchmarking method with multiple inputs and outputs. However, DEA does not provide any suggestions for improving efficient units, nor does it provide any benchmark or reference point for these efficient units. Impracticability of these benchmarks under environmental conditio...

We consider the dynamic portfolio choice problem in a jump-diffusion model, where an investor may face constraints on her portfolio weights: for instance, no-short-selling constraints. It is a daunting task to use standard numerical methods to solve a constrained portfolio choice problem, especially when there is a large number of state variables. By suitably embedding the constrained problem i...

THERE is a large literature on the design of selling mechanisms, which has led to a practical methodology for guiding sellers in the choice of selling methods (see note 1). This methodology is related to the theory of mechanism design in the same way that engineering is related to physics: the practical methodology includes not just theoretical insights, but also the results of experimental and...

Advance selling before the time of consumption is now possible for even very small service providers, given new technologies (specifically, web-based transactions, biometrics and smart card technology). Moreover, recent research has revealed that advance selling can substantially improve profits without traditional price discrimination. However, that research was limited to monopoly settings. T...

Abstract Global-scale quantum communication networks will require efficient long-distance distribution of signals. While optical fibre communications are range-limited due to exponential losses in the absence memories and repeaters, satellites enable intercontinental communications. However, design satellite key (SatQKD) systems has unique challenges over terrestrial networks. The typical appro...

In this paper, we apply the Markowitz portfolio optimization technique based on mean-variance and semi-variance as measures of risk stocks listed South Pacific Stock Exchange, Fiji. We document key market characteristics consider monthly returns data from SEP-2019 to FEB-2022 (T = 30) 17/19 companies stock exchange construct various portfolios like 1/N (naïve), maximum return, minimum-variance ...