This paper studies a production system where products are produced continuously and whose specification limits are specified for screening inspection. This paper considers different costs associated with a quality characteristic that falls below a lower screening limit, or above an upper screening limit. Due to these different costs, the expected total profit will greatly depend on the process ...

Huang [Mathematical Problems in Engineering, 2006, ID 79028, 1-5] studied the effect of service level constraint on the economic production quantity (EPQ) model with random defective rate. He offered an algebraic approach to replace his differential calculus skill to find the optimal solution under the expected annual cost minimized. In this article, we want to use an easy and simple arithmetic...

ABSTRACT This paper presents the O-T Diagram (Operations versus Time), an updated computerized-version of the classical Gantt chart in order to simulate the behavior of complex production systems. O-T diagrams are useful to understand the behavior of production systems, in terms of their real lead-time (time elapsed from the moment a production order starts being manufactured till the moment wh...

An EPQ model for the co-operative supply chain under the conditions of permissible delay in payments is developed in this work, in order to compare the co-operative supply chain with noncooperative supply chain; we also propose another EPQ model for the non-cooperative supply chain under the same conditions. In addition, we provide an efficient algorithm to obtain the optimal solution, and the ...

Email is emerging as an important channel for ISP customer care, and manual processing is labor intensive. A new system for automating the processing of large volumes of email received by an ISP customer care center is described. The system automatically determines the embedded email structure, extracts key email fields needed for aggregation and ticketing, performs keyword analysis, and invoke...

fruit waste extract was selected as the sole substrate for carotenoid production and the effect of parameters like ph, temperature and agitation have been studied. a two-step simple sequential strategy was employed for the optimization of carotenoid production by rhodotorula rubra. in the first step, one factor at a time was employed to evaluate the impact of ph on carotenoid production. the ou...

This paper presents a real case customized flexible furniture production optimization. Such a make-to-order production must be flexible to meet the customer’s needs, which are changing frequently. Hence, a frequent review of the production process is needed to ensure near-optimal production schedule to meet the minimal makespan constraint. In such a case we are confronted with a tradeoff betwee...

This paper explores the use of divide and conquer algorithms to solve production optimization problems. Exploitation of inherent structure facilitates efficient formulations and solutions to production optimization problems that frequently appear in the upstream oil and gas sector. We present the daily production optimization, which gives rise to network optimization problems, and also add some...

background: this study quantified the effect of four popular culture media in a biodiesel production study on the qualitative and quantitative lipid content, dry biomass, and lipid productivity of nannochloropsis oculata. methods: culture of microalgae was done separately in walne, f/2, sato, and tmrl media. in the logarithmic and stationary growth phases, biomass production and lipid accumulat...