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    A New Mathematical Model for Assembly Line Worker Assignment and Balancing
    (2019) Yılmaz, Hamid; Demir, Yunus
    Aim of assembly line balancing is to assign the product parts to the workstations that constitute the assembly line. Worker assignment problem is a new problem variety in assembly lines that typically is met in different situations in which the workforce is not homogeneous. This problem is different from the well-known simple assembly line balancing problem from the view point of task execution times of nonhomogeneous workers. In this paper, we introduce a new mathematical formulation with objective function to minimize the cycle time for the assembly line worker assignment and balancing problem (ALWABP). GUROBI solver is used for the problem solution. The mathematical model is examined by using a standard test problem set. As a result of the experiments, it is observed that the proposed mathematical model is more effective in terms of solution quality and CPU time than the current mathematical method.
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    A Problem-Solving Environment to Teach Students Assembly Line Balancing Techniques
    (2019) Yılmaz, Hamid; Demir, Yunus
    Assembly line balancing is a production planning strategy that has been widely used in industrial applications.Most line balancing problems are known as nondeterministic polynomial time (NP-hard) problem, and theyhave different structures and solution methodology approaches. In this study, newly developed productionplanning software which is called Visual Assembly Line Balancing Software (VALBS) is introduced foreducational purposes. The aim of the software is to support teaching activity for assembly line balancingtechniques; facilitate understanding characteristics of different assembly lines and solution approaches, andenable to compare the results of them. The proposed VALBS is easy to use in various manufacturingenvironments, and suitable to support teaching line balancing procedures in undergraduate students. Thesoftware was used in classes of industrial and mechanical engineering students and feedbacks of studentsmeasured by Likert Scale survey. The results show that proposed visual software is an effective method to teachline balancing procedures.