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Project scheduling problem is to determine the schedule of allocating resources so as to balance the total cost and the completion time. This paper considers project scheduling problem with uncertain activity duration times and presents four new uncertain programming models for different management requirements. Moreover, taking advantage of some properties of uncertainty theory, these models c...

Mammals can reliably predict the time of occurrence of an expected event after a predictive stimulus. Climbing activity is a prominent profile of neural activity observed in prefrontal cortex and other brain areas that is related to the anticipation of forthcoming events. Climbing activity might span intervals from hundreds of milliseconds to tens of seconds and has a number of properties that ...

In the past decade the use of the internet has become a major part of most people’s daily lives. The large increase in internet activity has also sparked the growth of new industry, in particular, e-commerce. There are thousands of well-known e-commerce companies. Ebay is one of the most popular and well-known. Ebay is the world’s largest online auction house and plays a large part in the e-com...

A new study by He et al. in this issue of Neuron shows that large-scale arrhythmic (1/f) brain activity contains nested temporal structure in the form of crossfrequency coupling. This suggests temporal organization in neural mass activity beyond oscillations and draws attention to ubiquitous but often ignored arrhythmic patterns in neural activity.

the effects of different storage temperatures and times on germination rate, malondialdehyde (mda), superoxide dismutase (sod), peroxidase (pod) and catalase (cat) activities in jatropha curcas l. seed were investigated. the results showed that germination rates of seeds stored at room temperature and 4°c for 1 month was significantly higher than those stored for 3 months at -20 and -80°c. mda ...

PURPOSE To assess, through surface electromyography (sEMG), the activity of the risorius and zygomaticus muscles, during the production of voluntary smiles and to compare these data between two groups of individuals with different onset times of peripheral facial palsy (PFP). METHODS A total of 140 adults were divided into three groups: G1 (35 individuals with PFP onset time between 0 and 3 m...