in the literature hardly any attention is paid to solving a fuzzy fixed charge transportation problem. in this paper, we consider the fully fixed-charge transportation problem and try to find both the lower and upper bounds on the fuzzy optimal value of such a problem in which all of the parameters are triangular fuzzy numbers. to illustrate the proposed method, a numerical example is ‎presented.‎

the goal of this paper is to develop a decision support system (dss) as a journey planner in complex and large multimodal urban network called rahyar. rahyar attempts to identify the most desirable itinerary among all feasible alternatives. the desirability of an itinerary is measured by a disutility function, which is defined as a weighted sum of some criteria. the weights represent travelers’...

introduction: due to the importance of apical transportation during root canal preparation, the aim of the current study was to use cone-beam computed tomography (cbct) to assess the extent of apical transportation caused by protaper and mtwo files. methods and materials: forty extracted maxillary first molars with 19-22 mm length and 20-40 degrees of curvature were selected. the mesiobuccal ca...

Green transportation is a concept developed by utilizing vehicles that are environmentally friendly, low in emissions and do not produce pollution has negative impact on the environment. This study aims to analyze scientific publications green as main construct relevance sustainable be directed into novelty followed up future developments. Meta analysis was optimizing use of literature transpor...

introduction: we aimed to compare apical canal transportation of extracted teeth and two types of simulated resin blocks. materials and methods: mesiobuccal root of extracted maxillary molars, high hardness simulated resin blocks (knoop hardness=40) and low hardness simulated resin blocks (knoop hardness=22) were prepared with k-files using step-back technique (n=15 canals in each group). doubl...

strongly supports academic freedom and a researcher's right to publish; as an institution, however, the Laboratory does not endorse the viewpoint of a publication or guarantee its technical correctness. Abstract. For transportation planning applications , it is useful to not only model each individual traveler, but also the decision-making process leading to her travel demand. Simulation-based ...