continuous improvement in performance is essential for the success of the paperboard industry. strength improvement has always been an important consideration for papermakers. strength increasers are critical components for manufacturing of paperboard. these materials provide not only the required strength quality to paper products but also can improve the machine productivity and process effic...

this paper considers identical parallel machines scheduling problem with past-sequence-dependent setup times, deteriorating jobs and learning effects, in which the actual processing time of a job on each machine is given as a function of the processing times of the jobs already processed and its scheduled position on the corresponding machine. in addition, the setup time of a job on each machin...

scheduling is an important subject of production and operations management area. in flow-shop scheduling, the objective is to obtain a sequence of jobs which when processed in a fixed order of machines, will optimize some well defined criteria. the concept of transportation time is very important in scheduling. transportation can be done by robots. in situations that robots are used to transpor...

in this work some quantitative structure activity relationship models were developed for prediction of three bioenvironmental parameters of 28 volatile organic compounds, which are used in assessing the behavior of pollutants in soil. these parameters are; half-life, non dimensional effective degradation rate constant and effective péclet number in two type of soil. the most effective descripto...

farmers are now more interested in application of weed control methods and tools with less environmental side effects. flame weeding using propane gas is an approach with almost no any chemical residue on the soil and plant surfaces or underground water. in this research, a flame weeding machine with the ability of uniform and also discrete flaming was developed and evaluated in laboratory and ...

Forecasting in the energy sector is of great importance for suppliers and consumers. Optimum power consumption depends on many factors. Due to natural or any other external conditions, accidents are possible. In order minimize emergency consequences, it necessary be prepared possible outages advance reduce time their elimination decision-making. This article considers problem forecasting at sub...

Solving real-world multi-objective optimization problems using Multi-Objective Optimization Algorithms becomes difficult when the number of objectives is high since types algorithms generally used to solve these are based on concept non-dominance, which ceases work as grows. This problem known curse dimensionality. Simultaneously, existence many objectives, a characteristic practical problems, ...