This study examines IT professional certification’s role and prominence in the marketplace. IT professional certificates and arguments supporting and negating their role in the marketplace are viewed. Results of a content analysis of IT job ads are reported. The analysis, focusing on education, experience, and professional certification requirements, found that less than 20% of IT job ads menti...

Open, mixed and closed queueing networks with multiple job classes, reversible routing and rejection blocking are investigated in this paper. Jobs may change class membership and general service requirement distributions that depend on the job class are allowed. We prove that the equilibrium state probabilities have product form if at all stations either the scheduling discipline is symmetric o...

I use data from employers and longitudinal data from former/current recipients covering the period 1997 to early 2004 to analyze the relationship between job skills, job changes, and the evolution of wages. I analyze the effects of job skill requirements on starting wages, on-the-job training opportunities, wage growth prospects, and job turnover. The results show that jobs of different skill r...

Autonomous Decentralized Systems concurrently work on different types of jobs which consist of interdependent tasks ("steps"). Steps are characterized by their service requirements. It is the load balancing problem to increase the system throughput by reducing contention between steps accessing the same resources. In this paper, we propose a dynamic decentralized look-ahead scheduling algorithm...

Hadoop is the de-facto standard for big data analytics applications. Presently available schedulers for Hadoop clusters assign tasks to nodes without regard to the capability of the nodes. We propose ThroughputScheduler, which reduces the overall job completion time on a clusters of heterogeneous nodes by actively scheduling tasks on nodes based on optimally matching job requirements to node ca...

Abstract Older workers face problems in the labor market due to dominant beliefs about their abilities: they are perceived as reliable, trustworthy, and loyal, but also less adaptable, motivated, capable compared younger workers. The mixed older resonate with stereotype of people society according Stereotype Content Model (SCM) being warm competent reflected news corporate media. present study ...

In the performance of activities in an organization, communication plays a dominant role in that it allows people to coordinate their activities. They organize their activities by having conversations intending to initiate actions and report on them. The modeling of business communication is a central part in the communication-centered organizational modeling approach called dynamic essential m...

Grid computing is a high performance computing environment to solve larger scale computational applications. Grid computing contains resource management, job scheduling, security problems, information management and so on. Job scheduling is a fundamental and important issue in achieving high performance in grid computing systems. However, it is a big challenge to design an efficient scheduler a...