We study real-time routing policies in smart transit systems, where the platform has a combination of cars and high-capacity vehicles (e.g., buses or shuttles) seeks to serve set incoming trip requests. The can use its fleet as feeder connect passengers fleet, which operates on fixed routes. Our goal is find optimal (bus) routes corresponding frequencies maximize social welfare system given tim...

I. Three groups of sheep receiving 400,800 and 1200 g lucerne chaff/d in equal hourly meals were killed. The large intestines were removed and divided into segments 15 cm long to provide information on the amounts and dry-matter contents of digesta and on the rates of passage of digesta and absorption of water along the large intestine. z. With increasing intakes of food, increases were observe...

Transit services are currently facing several challenges in the United States and around the world. For many reasons, among which the fluctuations in gas prices and the state of the economy are the major ones, transit demand has noticed a considerable increase. The challenge that transit agencies are facing is to make these increases permanent by maintaining transit’s competitive edge over the ...

TO THE EDITOR: We read with great interest the review article entitled " How to interpret a functional or motility test: colon transit study " by Kim et al. 1 The authors reviewed colonic transit study using radio-opaque markers, scintigraphy and wireless mo-tility capsule in evaluation of colonic motility. 1 They described the method and criteria to differentiate between slow and normal transi...

BACKGROUND Constipation is a common problem in childhood, and various radiologic methods have been advocated for investigation. Colonic transit time (CTT) has been used in adults to investigate colonic motility, but few studies evaluate this method in children. Data on CTT in the normal paediatric population are scarce. METHODS The colonic transit time was measured in 22 healthy children (med...