Abstract The connection between production scheduling and transportation is getting closer in smart manufacturing system, both of those problems are summarized as NP-hard problems. However, only a few studies have considered them simultaneously. This paper solves the integrated problem (IPTSP) hybrid flow shops, which an extension shop (HFSP). In addition to on machines, process automated guide...

A study on the prevalence and levels of Campylobacter, Salmonella and E. coli on broiler chicken carcasses, wash and rinse water from pluck shops/ cottage poultry processors (CPP) in county Nariva Mayaro Trinidad was done. There are 21 pluck shops/ cottage poultry processors in the county, 14 pluck shops were randomly selected for the study. Samples consisted of 28 broiler carcasses, 14 wash wa...

background and purpose: most traditional tea shop owners use a bowl to wash tea cups in sari city (north of iran). there are more than 140 traditional tea shops in the city. unfortunately most people drinking at these shops as well as health authorities do not pay attention to the health criteria of the shop. the objective of this study was to examin the tea cups washing water of traditional te...

this paper investigates the problem of just-in-time permutation flow shop scheduling with limited buffers and linear job deterioration in an uncertain environment. the fuzzy set theory is applied to describe this situation. a novel mixed-integer nonlinear program is presented to minimize the weighted sum of fuzzy earliness and tardiness penalties. due to the computational complexities, the prop...

We consider a wireless network where each flow (instead of each link) runs its own CSMA (Carrier Sense Multiple Access) algorithm. Specifically, each flow attempts to access the radio channel after some random time and transmits a packet if the channel is sensed idle. We prove that, unlike the standard CSMA algorithm, this simple distributed access scheme is optimal in the sense that the networ...

Hybrid algorithm based on Particle Swarm Optimization (PSO) and Simulated annealing (SA) is proposed, to solve Flexible Job Shop Scheduling with five objectives to be minimized simultaneously: makespan, maximal machine workload, total workload, machine idle time & total tardiness. Rescheduling strategy used to shuffle workload once the machine breakdown takes place in proposed algorithm. The hy...

This paper presents a hybrid scavenger grid as an underlying hardware architecture for search services within digital libraries. The hybrid scavenger grid consists of both dedicated servers and dynamic resources in the form of idle workstations to handle mediumto large-scale search engine workloads. The dedicated resources are expected to have reliable and predictable behaviour. The dynamic res...

Hot ring rolling is a highly nonlinear, unsteady-state and asymmetry process which is affected by many parameters. The friction coefficient between the ring ,the driver roll and the idle roll is one of the problems, which has significant effect on the quality of final product. In this study, the effect of these two parameters on hot ring rolling was investigated based on a 3D coupled-thermo mec...

As the minimum dimensions of CMOS transistors shrink down to 90 nm and below, some physical obstacles have been observed which prevent rigidly this miniaturization. For example, high transistor leakage currents lead to an important increase of the 'idle' power consumption of CMOS memory arrays (e.g. SRAM). This limits a number of applications, especially for FPGA circuit as its configuration da...