In this paper we propose a novel continuous time model based on state task network for the problem of scheduling m products in n continuous processing units with simultaneous arrival of liquid inputs and multiple intermediate upliftment dates. The units can process only one product line at a time and are buffered by fixed capacity storage tanks. An optimization model for the problem tries to ba...

In this contribution, a different pressure thermally coupled extractive distillation process has been applied on the separation of propylene and propane with aqueous acetonitrile (ACN) solution as entrainer. The novel distillation process integration is the combination of different pressure thermally coupled distillation (DPTCD) and extractive distillation (ED). Both the new process and the con...

due to shortage of precipitation and the spatial and periodical disparity of rainfalls, iran iscounted among the arid and semi-arid countries of the world, and therefore the water utilities have put thecontrol of consumption and efficient use of water high on their priorities. water consumption management isconsidered as a field of energy management, and the impacts of effective measure related...

This paper addresses the reliability analysis for a real-world apparel manufacturing system by using fuzzy mathematics. The studied apparel manufacturing system is a precise handicraft profession which involves a great amount of labor-intensive processes. To consider human performance, the apparel manufacturing system is constructed as a fuzzy multistate network, termed apparel manufacturing ne...

With increasing production costs and constraints, demand has increased for manufacturers to minimize maintenance cost and product transport time. We address some aspects of this problem by examining how to choose the optimal layout of stations (machines or buffers) in a production facility based on how the station layout affects the maintenance and product transport times. Specifically, we cons...

Reducing the cost of a product at the design stage is more effective than at the manufacturing stage. In this paper, an attempt is presented to quantify the manufacturing cost in feature-based design. Machining form features are classified as simple and complex. The machining cost of a part depends not only on the type of form features, but also on the relationship among the features. This cost...

Purpose The purpose of this paper is to empirically examine supplier selection among smalland medium-sized firms in the US textile and apparel industry. For smalland medium-sized firms, one powerful method of improving the firm’s competitiveness in the dynamic business environment is through strategic approach of supplier selection, which emphasizes supplier’s contributions to the total product...

Several industrial problems involve placing objects into a container without overlap, with the goal of minimizing a certain objective function. This problems arise in many industrial fields such as apparel manufacturing, sheet metal layout, shoe manufacturing, VLSI layout, furniture layout, etc., and are known by a variety of names: layout, packing, nesting, loading, placement, marker making, e...

The growing accessibility of internet service, especially in the Internet Plus era, supported mass customization in the apparel industry. As mass customization emphasize on providing individually-designed products and services to meet every customer requirement, the advanced Internet-based service systems help achieve high process flexibility and integration. In this paper, we studied the trian...

The use of effective software in Computer Aided Process Planning (CAPP) can contribute significantly towards cost reduction and improvement in production rate. The most important elements of CAPP are the ability to effectively evaluate various machining process sequences and the utilization of the most appropriate machining parameters including machines, tools and tool grades and tool angles, c...