Vehicle Routing Problem with Backhauls is an extension of vehicle routing problem. In this problem, customers are divided into two sets as linehaul and backhaul customers. All goods are delivered to linehaul customers before goods are brought from backhaul customers. In this study, a heuristic based on integer programming is proposed. Firstly linehaul and backhaul customers are clustered to veh...

In the past few years physiological experiments have brought us a little closer to an understanding of some forms of developmental amblyopia-deficits of visual acuity of central, not retinal, origin, which are not correctable by optical means. While amblyopia has become a catch-all term that covers the symptoms of a multitude of disorders, there are certain stereotyped experimental procedures t...

In recent years the Internet has brought to the forefront an entirely new form of products: virtual goods. In a narrow sense these are digital items such as clothing for avatars. Unlike traditional digital goods (like musicfiles etc.) these objects live exclusively online in synthetic worlds such as Second Life or World of Warcraft and therefore may be consumed only on the internet. This articl...

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Infertility and perinatal loss are common, and associated with lower quality of life, marital discord, complicated grief, major depressive disorder, anxiety disorders, and post-traumatic stress disorder. Young women, who lack social supports, have experienced recurrent pregnancy loss or a history of trauma and / or preexisting psychiatric illness are at a higher risk of experiencing psychiatric...

With an increasing trend towards deep water production, the susceptibility of offshore structures to dynamic response has become an important issue. Indeed, this has been bough to the forefront by a new response phenomenon, commonly referred to as ‘ringing’, which is thought to be associated with steep near-braking waves. At present, neither the occurrence of ‘ringing’ or the mechanisms which p...