جستجوی مقالات مرتبط با کلیدواژه "برنامه ریزی عدد صحیح آمیخته" در نشریات گروه "صنایع"

One of the issues facing urban communities is waste management. In this paper, we determine the location of landfills, the capacity of these sites, the location of transfer stations, their capacity, and the location of waste recycling centers in such a way that the total costs (including the costs of establishment and transportation of waste from production to refining sites, landfills and recycling centers) are minimized. We also control pollution levels by defining a maximum allowable pollution for each population center to comply with environmental constraints. In this study, the problem is formulated as a mixed integer programming model. Then, the capacity of the landfill and the capacity of the refining sites are considered as uncertain parameters and a robust optimization model is developed. Also, to validate the model, a problem instance is solved and the computational results are presented for different levels of conservatism. The decision maker can use the results to select the appropriate level of conservatism.

In recent decades, the theory of robust optimization has been introduced as a powerful tool for optimizing uncertain processes. Regarding the Uncertainty of the glycemic load of consumed food, the main purpose of this article is to provide an optimal Iranian diet using a robust optimization to adjust the glycemic load in patients with type 2 diabetes. Diabetes type 2 is a devastating disease, in addition to cardiovascular disease, infectious and kidney diseases, causes insulin resistance and cancer and drugs of cholesterol-lowering have an increased risk of cardiovascular complications and incidence of cancer. Indeed, adjustment of nutrition is important to prevent and control or reduce the complications of diabetes. In this paper, due to the uncertainty of the glycemic load of foods, with collecting necessary nutritional information, the Iranian diet model is determined and analyzed by robust optimization method. According to this, 75 cases of food (42 Iranian food, 10 Foodstuffs for breakfast, 20 types of fruits and Fruit juices and 3 types of dairy products) have been studied locally. The benefits of this model are the ability to adapt according to the person's tastes and opinion of the nutritionist with minimizing changes for the current diet of the individual.