INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY On Two Stage Open Shop Scheduling in Which Processing Time, Set Up Time Associated with Probabilities Including Job Block Criteria Deepak Gupta, Manjeet Kaur *1,2 Department of Mathematics, Maharishi Markandeshwar University, Mullana, Ambala, India [email protected] Abstract The present paper is an attempt through heu...

The paper deals with the open-shop problems with unit-time operations and nonde-creasing symmetric objective functions depending on job completion times. We construct two schedules, one of them is optimal for any symmetric convex function, the other is optimal for any symmetric concave function. Each of these two schedules is given by an analytically deened function which assigns to each operat...

The paper concerns the application of a non-classical performance measure, a late work criterion (Y, Yw), to scheduling problems. It estimates the quality of the obtained solution with regard to the duration of the late parts of tasks not taking into account the quantity of this delay. The paper provides the formal definition of the late work parameter, especially in the shop environment, toget...

This paper addresses a multiprocessor generalization of the preemptive open-shop scheduling problem. The set of processors is partitioned into two groups and the operations of the jobs may require either single processors in either group or simultaneously all processors from the same group. We consider two variants depending on whether preemptions are allowed at any fractional time point or onl...

In the United States, right‐to‐work (RTW) laws impose open shop on labour unions. I test whether RTW affects frequency and outcomes of union representation petitions. Quasi‐experimental tests reveal no association between law volume certification petitions filed that fewer are withdrawn under RTW. Thus, unions do not appear to retreat from new member organizing law. Moreover, correlates with a ...