This study measures the performance of U.S. firms initiating same-sex domestic partnership benefit (SSDPB) policies. The results show that holding these firms upon their SSDPB initiation in a calendar portfolio earns a four-factor annualized excess return (alpha) of approximately 10% over the...

Variable selection plays an important role in the high dimensionality data analysis, the Dantzig selector performs variable selection and model fitting for linear and generalized linear models. In this paper we focus on variable selection and parametric estimation for partially linear models via...

Usually there are multi-lane on the main road of the on-ramp system. The drivers may decelerate for more safety when they are near the on-ramp. In addition, the car velocity may be restricted according to the traffic regulation. In this paper, we study phenomenon using the cellular automata...

In this paper, we investigate the on-ramp system on the highway using cellular automaton traffic model. Different from previous work, we introduce traffic signal to control the vehicle flows on the main road and the on-ramp. A method of signal controlling is presented, and the update rule in...

A multiple activities principal-agent model regarding CEO compensation in cooperatives is presented, capturing that cooperatives are not publicly listed and that they have to bring the enterprise to value as well as to serve member interests. A cooperative dominates a publicly listed firm in...

Based on micro-level student data from one Chinese academic institution, we study the validity of the national college entrance exam from the perspective of student performance in college and employment prospects after graduation. We find that the current college entrance exam could reflect the...

In this paper, train scheduling problem (TSCP) is discussed for the case of single-track railway corridor, in which variable sensitivity on train delay are discussed in detailed for different types of trains. The mathematical model is a complicated nonlinear mixed-integer programming. The object...

Although benchmarking technique has been widely used in various aspects of organisations and businesses, there is no clear framework on how the technique can be applied for Web evaluation. This article presents a framework for evaluating the usability and content usefulness of Web sites by using...

This paper presents a new business model based on skill brokerage, aiming to facilitate business start-ups and enhance their chance of survival in the context of the networked economy. The model is based on the concept of an entrepreneur sharing the venture's returns or even ownership with a...