This paper investigates when trade could cause the selection effect. Since the increased average real wage induced by trade triggers the selection effect in Melitz (2003), the main issue is the labor market conditions under which trade raises the average real wage. To identify the labor market conditions for the selection effect, this paper employs worker heterogeneity with respect to abilities...

Considered the commercialization and the virtualization characteristics of cloud computing, the paper proposed for the first time an algorithm of job scheduling based on Berger model. In the job scheduling process, the algorithm establishes dual fairness constraint. The first constraint is to classify user tasks by QoS preferences, and establish the general expectation function in accordance wi...

Scheduling on distributed systems is an NP hard problem and grid being a wide heterogeneous expandable system makes scheduling even a tougher job. Genetic algorithm, based on natural selection and evolution has gained popularity in recent times because of its effectiveness in handling optimization problems. In this article, a job-scheduling model for a computational grid with the objective of m...

In today’s grid deployments, resource selection is based on the prior knowledge of the performance characteristics of the application on a particular resource and on real-time monitoring status of the resource such as load on the system, network bandwidth, etc. Any lag between a resource selection decision and the time the job appears in the system’s monitoring facility will cause subsequent de...

In three experiments we investigated the locus of the frequency effect in lexical access and the mechanism of gender feature selection. In Experiment 1, participants were asked to produce gender-marked verb plus pronominal clitic utterances in Italian (e.g., ‘‘portalo’’ (bring it [masculine]) in response to a written verb and pictured object. We found that pronominal clitic production is sensit...

This paper jointly analyses the consequences of adverse selection and signalling on entry wages of skilled employees. It uses German linked employer employee panel data (LIAB) and introduces a measure for relative productivity of skilled job applicants based on apprenticeship wages. It shows that post-apprenticeship employer changers are a negative selection from the training firms’ point of vi...