Four heuristic algorithms are developed for solving the generalized version of tardiness flow shop problems. We consider the generalized tardiness flow shop model with minimization of the total tardiness as its performance measure. We modify the concept of cost over time (COVERT) for the generalized version of the flow shop tardiness model and employ this concept for developing four algorithms....

The estimation of production rate (or throughput) is important in manufacturing system design. Herein, we consider the an automotive body shop which two types car are produced, and one (engine car) substituted by other (electric gradually. In this shop, different underbody lines installed because structures cars differ completely; however, side line main shared cars. Furthermore, assume that re...

Bones are vital and strong, but not invincible—they can be broken. Normally, bones repair themselves. However, sometimes broken must supported using what is called an implant. An implant a man-made device used to replace or support missing part of the human body. In case bone, aims at helping bone regain its natural function. inserting foreign object into body has several possible complications...

flow shop sequencing problem is included in np-hard problems and a number of heuristic methods have been developed to solve it. most of these methods are offered for the crisp processing time. however fuzzy algorithm is appropriate for the problems with fuzzy processing time. this paper presents a method in which an algorithm is used to minimize make span of flow shop with fuzzy processing time...

In this innovative technique case report, we describe off-label use of an iliac branch endoprosthesis (IBE) and a main body EVAR component for total endovascular repair thoraco-abdominal aortic aneurysm in patient unsuitable open repair. paper, planning measurement techniques type repair, as well post-operative considerations. Take-home lessons include the importance advanced overall feasibilit...

This paper deals with multi-operation models, which are different from the flow shop and job shop models. In the flow shop or job shop models, the routes of all jobs are known in advance. In practice, the route of the job is often immaterial and up to the scheduler to decide. When the routes of the jobs are open, the model is referred to as an open shop. This paper describes the development of ...

The proposed hybrid stage shop scheduling (HSSS) model, inspired from a real case in the high-fashion industry, aims to fully exploit the potential of parallel resources, splitting and overlapping concurrent operations among teams of multifunctional machines and operators on the same job. The HSSS formally extends mixed shop scheduling (a combination of flowshop and open shop), which is able to...

One-opeator two-machine open shop and ow shop problems are NP-hard in the ordinary sense even if all the weights are the same. We discuss two di erent pseudo polynomial dynamic programming recursions for each of the open shop and ow shop case. Some of the running times are better than those of the best known algorithms in the literature.