In this study, the problem of navigation in dynamic and unknown environment is investigated and a navigation method based on force field approach is suggested. It is assumed that the robot performs navigation in...

[1] corresponding author e-mail: [email protected]   [1] corresponding author e-mail: [email protected]   lot-sizing problems (lsps) belong to the class of production planning problems in which the availability quantities of the production plan are always considered as a decision variable. this paper aims at developing a new mathematical model for the multi-level capacitated lsp w...

bahram beizayi can be regarded as one of the few contemporary iranian writers with a specific style since 1960s. he is a person mostly recalled to be a director and playwright. however, a remarkable part of his activities which has not received the attention is his method of screen writing. it can be claimed that his screen plays have not yet been studied as well as his plays. the current resea...

researches have always been seeking those factors that deserve to be studied to reduce the risk involved in the process of enterprise resource planning implementation and increase the opportunity of achieving the implementation objective. in addition, by knowing the priority of the factors, they could carry out the resources allocation in a goal-directed way. by seeking the opinions of the seni...