A Precision Pointing System for Shuttle Experiment Pay loads

This paper describes the Annular Suspension and Pointing System (ASPS) being developed to support NASA Shuttle payloads in the 1980s. The ASPS employs a unique magnetic suspension system to isolate Shuttle payloads from Orbiter disturbances and provide vernier control of the payload\u27s attitude, thereby allowing extremely accurate and stable pointing. A description of the system design, configurations, and performance goals is given. Component and system development testing of the full-size ASPS Engineering Development Model is described, and hardware photographs and test configurations are presented

The Effect of Penalty upon Frequency of Stuttering Spasms

One of the features with which the psychologist must constantly deal when investigating stuttering is the great amount of variation in the frequency of stuttering blocks or spasms. Steer 1 has shown that frequency of stuttering spasms is, at least to a certain degree, a function of the type of speech situation. Van Riper and Hull2 showed a progressive decrease in frequency of spasms as the stutterer adapted to any given speech situation. However, little knowledge was gained from these experiments as to what factors in the situations were responsible for the variations in frequency

A Study of Handedness

Simultaneous writing of both hands on a variable angle board showed large differences in performance between thoroughly right and left handed groups, the non-dominant hand producing mirror-script or mirror-patterning. A measure of amount of laterality by means of the angle at which mirroring occurred was shown. A recheck of Jasper\u27s work on the phi-phenomenon as a measure of laterality gave corroborative results. The use of the Japanese Illusion as an indication of laterality was shown to be invalid. Failure of the non-dominant hand to reverse at a sound signal when both were describing opposite circles was demonstrated

If There Wasn’t Farming, Somebody Wouldn’t Eat: Small Scale Agriculture, Community Autonomy, And Food Sovereignty In Mississippi

This thesis examines the historical context of small scale farming and grassroots social movements in Mississippi’s history, and investigates the ways small farmers and community advocates are drawing upon their land-based heritage and local knowledge systems to create community-controlled food systems in dialogue with broader national and global conversations about sustainable agriculture and food sovereignty. Employing a multi-scalar method of analysis, the research studies issues from the perspective of individuals, communities, institutions, as well as national and transnational systems. The work draws from previous scholarship in environmental studies, agroecology, critical race studies, rural sociology, critical historiography, agrifood studies, and regional studies to further a person-centered critique of industrial agriculture. It uses the scalar model to connect Mississippi’s history of small scale farming, black land loss, and grassroots social movements to global human rights struggles and the food sovereignty movement. The original research suggests that individuals with strong senses of place and commitments to community are integral to sustainability in local food systems. It forwards the conclusion that these individuals can be powerful agents of change on a global scale when they join together in solidarity and resistance to global institutional policies which systematically undermine local environments, local people, and local knowledge practices

The Use of Sheep Wool in Nest Construction by Hawaiian Birds

Reports were scanned in black and white at a resolution of 600 dots per inch and were converted to text using Adobe Paper Capture Plug-in.The utilization of sheep wool as a nesting material was examined from 1969 through 1975 on the island of Hawaii. Of the 10 bird species studied, six incorporated wool into their nests. Both introduced and endemic birds use wool, with a significantly greater usage by endemic birds. Use of wool in nest construction appears correlated with the intricacy of the nest that a species builds, with a significant difference between degree of usage in complex and simple nests. Roughly built nests, like those of the Cardinal (Cardinalis cardinalis), contained no wool whereas the complex nest of the Elepaio (Chasiempis sandwichensis) had a great deal of wool. Wool is apparently used by the birds because it is a readily available material in certain areas, and because of its binding quality. The wool is gathered from tufts that snag on branches as the sheep pass or from dried skins on the ground. The amount of wool utilized in each nest varies both interspecifically and intraspecifically, but in all nests only the body of the nest contained wool, the lining always being of other materials. A separate study was conducted to determine if wool is used only when available nearby or is a sought-after material. Only the Elepaio was found to consistently travel distances to procure wool, whereas the other species studied used it only when available within their territories.This work was supported by the Frank M. Chapman Memorial Fund, the International Council for Bird Preservation, NSF grant GB 23230, and The World Wildlife Fund