objectives: the purpose of this study was to evaluate the concurrent validity of the farsi version of functional gait assessment (fga), timed up & go (tug), and gait speed tests in persian communitydwelling older adults. methods: subjects were 100 males in falling or no falling history group (50 subjects in each group). subjects were community-dwelling adults aged 60-90 years who were living in...

Due to increased complexity and extreme quality of service requirements, traditional means for performance evaluation of telecom networks do not always suffice. The most flexible approach has been, and still is, simulation, which is the main focus of this paper. However, severe problems regarding efficiency exist, e.g. evaluation of ATM cell loss rate in range of <10-9 which is very computer in...

1. The Physical Church-Turing Thesis. Physicists often interpret the Church-Turing Thesis as saying something about the scope and limitations of physical computing machines. Although this was not the intention of Church or Turing, the Physical Church Turing thesis is interesting in its own right. Consider, for example, Wolfram's formulation: One can expect in fact that universal computers are a...

This paper presents a formal framework for the automatic transformation of ineecient generate and test programs into equivalent programs by learning from the proofs of example queries. In the resulting program the search is guided by strategies based on abstracted proof traces obtained from the interpretation of example computations. Strategies are incre-mentally improved in an iterative proces...

The Markov Chain Monte Carlo method is at the heart of most fully-polynomial randomized approximation schemes for #P-complete problems such as estimating the permanent or the value of a polytope. It is therefore very natural and important to determine whether quantum computers can speed-up classical mixing processes based on Markov chains. To this end, we present a new quantum algorithm, making...