Tests of scaling of the proton electromagnetic structure functions

Deep-inelastic structure functions W₁ and W₂ have been extracted from electron-proton scattering cross sections that were measured in recent experiments at SLAC. The structure functions display deviations from scaling in the variable ω in the kinetic range 1.5 ? ω ? 3.0 and 2 ? Q² ? 15 GeV².     

A computer language for reducing activation analysis data

A program, written in FORTRAN, is described that defines a language for reducing activation analysis data. Communications are effected through commands, and these can be given in almost any order. Consistency checks are done and diagnostic messages are printed automatically to guard against the incorrect use of the commands. Default options on the commands allow instructions to be expressed concisely while providing a capability to specify details for the data reduction process. The program has been implemented on a UNIVAC 1108 computer.     

Effects of age and sequence presentation rate on temporal order recognition

The experiments examined the ability of younger and older listeners to identify the temporal order of sounds presented in tonal sequences. The stimuli were three-tone sequences that spanned two-octave frequency range, and listeners identified random permutations of tone order using labels of relative pitch. Some of the sequences featured uniform timing characteristics, and the sequence duty cycle was varied across conditions to examine the relative influence of tonal durations and intertone interval on recognition performance across a range of sequence presentation rates. Other stimulus sequences featured nonuniform timing with unequal tone durations and intertone intervals. The listeners were groups of younger and older persons with or without hearing loss. Results indicated that temporal order recognition was influenced primarily by sequence presentation rate, independent of tonal duration, tonal interval spacing, or sequence timing characteristics. The performance of older listeners was poorer than younger listeners, but the age-related recognition differences were independent of sequence presentation rate. There were no consistent effects of hearing loss on temporal ordering performance.     

The tree property at the double successor of a singular cardinal with a larger gap

Starting from a Laver-indestructible supercompact κ and a weakly compact λ above κ, we show there is a forcing extension where κ is a strong limit singular cardinal with cofinality ω, $2^{\kappa }={\kappa }^{+3}={\lambda }^{+}$, and the tree property holds at ${\kappa }^{++}=\lambda$. Next we generalize this result to an arbitrary cardinal μ such that $\kappa <\mathrm{cf}(\mu )$ and ${\lambda }^{+}\le \mu$. This result provides more information about possible relationships between the tree property and the continuum function.