4,245 research outputs found
Women as Managers: Myths and Realities
The negative myths about women in management are dying. The new reality is that women can and do manage men and women exceedingly well. Because of this, women clearly have the opportunity to attain economic power and security. But another new reality is raising its ugly head: women who refuse to work for other women or, worse yet, undermine their female managers. Mentors, training, and commitment on the part of institutions to employ them as managers will assure women the fair chance to succeed as managers
Wavefront Analysis of Adaptive Telescope
The motivation for this work came from a NASA Headquarters interest in investigating design concepts for a large space telescope employing active optics technology. Current and foreseeable launch vehicles will be limited to carrying around 4-5 meter diameter objects. Thus, if a large, filled-aperture telescope (6-20 meters in diameter) is to be placed in space, it will be required to have a deployable primary mirror. Such a mirror may be an inflatable membrane or a segmented mirror consisting of many smaller pieces. In any case, it is expected that the deployed primary will not be of sufficient quality to achieve diffraction-limited performance for its aperture size. Thus, an active optics system will be needed to correct for initial as well as environmentally-produced primary figure errors. Marshall Space Flight Center has developed considerable expertise in the area of active optics with the PAMELA test-bed. The combination of this experience along with the Marshall optical shop's work in mirror fabrication made MSFC the logical choice to lead NASA's effort to develop active optics technology for large, space-based, astronomical telescopes. Furthermore, UAH's support of MSFC in the areas of optical design, fabrication, and testing of space-based optical systems placed us in a key position to play a major role in the development of this future-generation telescope. A careful study of the active optics components had to be carried out in order to determine control segment size, segment quality, and segment controllability required to achieve diffraction-limited resolution with a given primary mirror. With this in mind, UAH undertook the following effort to provide NASA/MSFC with optical design and analysis support for the large telescope study. All of the work performed under this contract has already been reported, as a team member with MSFC, to NASA Headquarters in a series of presentations given between May and December of 1995. As specified on the delivery order, this report simply summarizes the material with the various UAH-written presentation packages attached as appendices
Wavefront Analysis of Adaptive Telescope
The motivation for this work came from a NASA Headquarters interest in investigating design concepts for a large space telescope employing active optics technology. The development of telescope optical requirements and potential optical design configurations is reported
Electrochemical characterization of a novel salen type modified electrode
The nickel(II) complex with H2saltMe, a N2O2 Schiff base ligand derived from salicylaldehyde, was oxidatively electropolymerized on Pt electrodes in CH3CN/0.1 mol dm-3 tetraethylammonium perchlorate (TEAP) to generate polymer films that exhibit reversible oxidative electrochemical behavior in a wide potential range (0.0-1.3 V), high conductivity, and stability/durability
Attributional style of African-American adolescents
This study ascertains how positive and negative life events are viewed by stigmatized youngsters. The causal attributions of a sample of 139 at -risk AfricanAmerican adolescents are analyzed in a doubly multivariate repeated measures design. These students were participants in either the federally funded Summer Training and Education Program or the Student Academic and Leadership Enhancement Program funded by the Detroit Compact. Previous research on these students indicated that they have higher than norm global self-concepts and their locus of control is more external than would be expected for their age. The findings of the current study suggest that the attributions these youngsters ascribed to positive events were significantly more internal, stable, and global than the attributions for negative events. An ancillary outcome of this study is to report psychometric information regarding the use of The Attributional Style Questionnaire
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