The tolerances of a storage ring to its magnet imperfections largely depend upon the magnitude of the resulting tune shifts. A large tune shift would imply the potential danger of resonances and. hence. poor tolerances. When the errors are in field gradients or in random sextupole displacement. the cal cul ati ons of the RMS tune shi fts are strai ght forward. On the contra ry. when we cons i d...

One of the most important and valuable goal of software development life cycle is software cost estimation or SCE. During the recent years, SCE has attracted the attention of researchers due to huge amount of software project requests. There have been proposed so many models using heuristic and meta-heuristic algorithms to do machine learning process for SCE. COCOMO81 is one of the most popular...

The number of trees T in the random forest (RF) algorithm for supervised learning has to be set by the user. It is controversial whether T should simply be set to the largest computationally manageable value or whether a smaller T may in some cases be better. While the principle underlying bagging is that"more trees are better", in practice the classification error rate sometimes reaches a mini...

The Intense Pulse Neutron Source (IPNS) Rapid Cycling Synchrotron (RCS) accelerates 50 MeV protons to 450 MeV 30 times per second for spallation neutron production. Average current from the RCS has recently exceeded 16 μA with peak instantaneous current approaching 15 A. The RCS makes efficient use of 21 kV of RF accelerating voltage and uses phase-modulation between the two rf cavities to damp...

OBJECTIVES To examine age-related differences in listening to speech in music. DESIGN In the first experiment, the effect of music familiarity on word identification was compared with a standard measure of word identification in multitalker babble. The average level of the backgrounds was matched and two speech-to-background ratios were tested. In the second experiment, recognition recall was...