Automobile exhaust emission are an important feature of urban environment contamination due to movement of high traffic density and are widely believed to have detrimental effects on plant growth. The effects of automobile exhaust emission on the germination and early seedling growth performance...

We consider a car-sharing problem in a company during business hours. The employees, located at one or several offices, have to travel to one or more appointments each with a fixed location and fixed start and end times and return to one of the offices afterwards. Each employee trip can be...