In this research, an accurate optimization model, based on the Six Sigma methodology was used in order to assists marine container terminal operators to minimize trucks congestions. to smooth gate activity and to shorten trucks turn-around times. The main purpose of this paper is to report findings of implementing the Six Sigma in the landside of marine container terminals to reduce the average...

cross docking is a logistic strategy that plays the role of a middle knot in distribution network in the provision process. in logistic part, inventory holding is considered as an important matter in managing costs. not only cross docking reduces the inventory holding cost, but it also reduces the cost of collecting received orders, transportation and duration of sending. the products, which ar...

In a supply chain, cross-docking is one of the most innovative systems for ameliorating the operational performance at distribution centers. Cross-docking is a logistics strategy in which freight is unloaded from inbound trucks and (almost) directly loaded into outbound trucks, with little or no storage in between, thus no inventory remains at the distribution center. In this study, we consider...

background while cyclists and pedestrians are known to be at significant risk for severe injuries when exposed to road traffic accidents (rta) involving trucks, little is known about rta injury risk for truck drivers. objectives the aim of this study was to analyze the injury severity in truck drivers following rtas. patients and methods our local accident research unit prospectively documented...

This paper focuses on the scheduling of trucks at a transshipment terminal with a single gate. Trucks deliver or pick up a single type of items at the gate and, therefore, increase or decrease, respectively, the inventory level. Naturally, pick up trucks can be served only if the required amount of items is available in the inventory. We consider the problem to find a schedule for trucks such t...

The low-cost and abundant supply of shale gas in the United States has increased the interest in using natural gas for transportation. We compare the life cycle greenhouse gas (GHG) emissions from different natural gas pathways for medium and heavy-duty vehicles (MHDVs). For Class 8 tractor-trailers and refuse trucks, none of the natural gas pathways provide emissions reductions per unit of fre...

Since the premium prices of yard trucks and significantly daily volatility of containers serving demand, it is an uneconomic method to keep a full team of fleet to cover the entire service. Some of the transportation services are outsourced to other external companies. The strategy of outsourcing yard trucks is a decision making problem that container terminals are currently facing. Yard truck ...

Exposure to whole-body vibration (WBV) and the postural requirements of the job have been identified as important risk factors in the development of musculoskeletal disorders of the back among workers exposed to a vibratory environment. This paper focuses on preliminary results of WBV data collected for two groups of haulage trucks – four older trucks from manufacturer A (MFR-A) and two newer t...

In this paper, a green transportation location problem is considered with uncertain demand parameter. Increasing robustness influences the number of trucks for sending goods and products, caused consequently, increase the air pollution. In this paper, two green approaches are introduced which demand is the main uncertain parameter in both. These approaches are addressed to provide a trade-off b...

in a supply chain, cross-docking is one of the most innovative systems for ameliorating the operational performance at distribution centers. cross-docking is a logistics strategy in which freight is unloaded from inbound trucks and (almost) directly loaded into outbound trucks, with little or no storage in between, thus no inventory remains at the distribution center. in this paper, we consider...