The nominal directivity for uniformly spaced broadside parallel half-wave dipoles associated with a uniform excitation is evaluated. The amplitude distribution for an optimized directivity is then obtained for different numbers of elements with the separations between the dipoles as a variable. The optimum and nominal directivities are compared for different spacings of the elements. While thes...

This version is made available in accordance with publisher policies. Please cite only the published version using the reference above. Abstract The process by which adults develop competence in symbolic mathematics tasks is poorly understood. Non-human animals, human infants, and human adults all form non-verbal representations of the approximate numerosity of arrays of dots, and are capable o...

in this study, salmonella typhimurium bacteria removal from polluted water has been investigated using multiwall carbon nanotubes arrays. experimental results reveal that the contact time, the bacterial concentration and the weight of multiwall carbon nanotubes arrays have positive significant effects on the bacteria removal efficiency. increasing the contact time and the weight of multiwall ca...

II. THE SCIENTIFIC OBJECTIVES OF THE GLOBAL FLOAT ARRAY...........................................................4 A. THE GODAE/CLIVAR CONTEXT ................................................................................................................................... 4 B. COMBINING PROFILING FLOATS AND ALTIMETRY FOR DIAGNOSIS OF THE CLIMATE SYSTEM ................................. 5 C. ...

Reverse phase protein arrays (RPPA) measure the relative expression levels of a protein in many samples simultaneously. Observed signal from these arrays is a combination of true signal, additive background, and multiplicative spatial effects. Background subtraction alone is not sufficient to remove all nonbiological trends from the data. We developed a surface adjustment that uses information ...

Knowledge of the stage composition and the temporal dynamics of human cognitive operations is critical for building theories of higher mental activity. This information has been difficult to acquire, even with different combinations of techniques such as refined behavioral testing, electrical recording/interference, and metabolic imaging studies. Verbal object comprehension was studied herein i...

We taught manual signs to typically developing infants using a reversal design and caregiver-nominated stimuli. We delivered the stimuli on a time-based schedule during baseline. During the intervention, we used progressive prompting and reinforcement, described by Thompson et al. (2004, 2007), to establish mands. Following sign training, we conducted functional analyses and verified that the s...

of a dissertation Submi~tett in partial fulfilment of therequirements for the ttegreeor Doctor of Philosophy BOSTON UNIVERSITY GRADUATE SCHOOL