In the current “e-commerce” boom, much attention has been paid to how the Internet is transforming product markets. At the same time, the Internet also is transforming labor markets, altering the way workers look for jobs, and the way firms recruit workers. More than 2,000 Internet job search sites now exist, yet little is known of their effects on labor markets. What percentages of unemployed ...

This paper presents a theory — built on job search, firm specific human capital, and disreputable contracting — to provide a unified explanation for a host of widely documented findings on wage and turnover dynamics. In particular, the theory reconciles two seemingly inconsistent facts: evidence that past wage growth on a job reduces turnover; and yet, using the same data, evidence that there i...

Job-search and migration behavior differ across educational groups. In this paper, I explore several differences between the migration and search behavior of workers with different levels of education, both theoretically and empirically. I start with two stylized facts. First, the propensity to migrate increases with education. Second, conditional on migration, the probability that a worker mov...

In December 1998, 15 percent of unemployed jobseekers, and 7 percent of employed persons used the internet to look for a new job. Conditioning on internet access from home, internet job search rates rise to 50 percent of unemployed jobseekers and 15 percent of the employed. Only 9 percent of black, and 7 percent of Hispanic unemployed jobseekers conduct on-line job search, compared to 16 percen...

job shop scheduling problem has significant importance in many researchingfields such as production management and programming and also combinedoptimizing. job shop scheduling problem includes two sub-problems: machineassignment and sequence operation performing. in this paper combination ofparticle swarm optimization algorithm (pso) and gravitational search algorithm(gsa) have been presented f...