1,605 research outputs found
Test stand for Titan 34D SRM static firing
An existing liquid engine test stand at the AF Astronautics Laboratory was refurbished and extensively modified to accommodate the static firing of the Titan 34D solid rocket motor (SRM) in the vertical nozzle down orientation. The main load restraint structure was designed and built to secure the SRM from lifting off during the firing. In addition, the structure provided weather protection, temperature conditioning of the SRM, and positioning of the measurement and recording equipment. The structure was also used for stacking/de-stacking of SRM segments and other technological processes. The existing stand, its foundation and anchorage were thoroughly examined and reanalyzed. Necessary stand modifications were carried out to comply with the requirements of the Titan 34D SRM static firing
Stories of School : Perspectives of the Low Literate Adult
This thesis explores the school experiences of low literate adults through their perspective recognising that the \u27voice\u27 of the low literate adult is absent from the arena of adult literacy research. Stories are co-constructed by the participant and the researcher with particular emphasis on mai1uaining the voice of the research participant. Through this thesis I argue that the inclusion of the low literate adults perspective is an essential element in gaining a deeper understanding of themes and issues which impact on literacy attainment
The broadcast spawning Caribbean shipworm, <i>Teredothyra dominicensis</i> (Bivalvia, Teredinidae), has invaded and become established in the eastern Mediterranean Sea
Labor market responsiveness: Assessing seven dimensions of the West Virginia community and technical colleges
The purpose of this study was to determine the extent to which the presidents of the ten public community and technical colleges in the state of West Virginia perceive their institutions implementing the seven dimensions of college life in support of labor market responsiveness identified by the U.S. Department of Education.;The U.S. Department of Education studied labor market responsiveness at 30 community colleges nationwide. They identified seven characteristics of college life shared among labor market responsive community colleges which include (1) leadership and governance; (2) organizational structure and staffing; (3) organizational culture; (4) resources and funding; (5) information and data; (6) relationship building; and (7) partnerships.;This study attempted to determine whether the institutional factors of size, student FTE, number of counties in the institutional service area, and the annual state allocated budget were related to the presidents\u27 perceptions regarding the seven dimensions, and to determine if there was a relationship between the presidents\u27 demographics and the seven dimensions.;The ten presidents of each West Virginia public community and technical college completed an on-line survey resulting in a 100% response rate. The data were analyzed using descriptive statistics, Cronbach\u27s alpha coefficient, Spearman correlation coefficient, and Cohen\u27s d.;Data indicated that there were measurable relationships between the seven dimensions and the variables of institutional size, number of counties in the service area, and the institutions\u27 annual state allocated budget. There were measurable relationships regarding the demographics of the presidents and the seven dimensions. Implications of this study may include institutions\u27 emphasis on the following (1) alternative funding; (2) professional development regarding the seven dimensions; (3) recognition and rewards; (4) building positive partnerships; (5) improved access to and use of information and data.;Recommendations for further research included other populations distinct from the presidents such as faculty and staff, larger populations, and a mixed methods approach including interviews
Shared decision making implementation: A case study analysis to increase uptake in New South Wales
The Shimmering Dam
This piece is an attempt to understand physical structures intertextually and to map mental forms and biographical fragments onto architectural objects.It stands language games and postures of articulation next to one another to produce meaning through differentiation and creative negation
Bone Density and Muscle Development Problems in Female Lightweight Rowers Trying to Make-Weight
The purpose of this study was to determine whether high intensity exercise, combined with restriction of diet, is counter-productive to the normal health and development of the competitor. The study investigated the effects of high intensity exercise on body composition (fat, muscle and bone); bone density; and physical performance (aerobic capacity, rowing performance, quadricep strength, power and fatiguability) in twelve lightweight female rowers (age range 17- 25yrs), training for the State and National lightweight championships. Six of the rowers completed the testing, which consisted of test1 (pre-training) and test2 (post-training) after a 12 weeks training regime.
Skinfold measurements were lower and significantly different (p \u3c 0.05) from pre-training values. Bodyweight results were also significantly lower (p \u3c 0.05), however, the mean bodyweight was still above the regulation weight of 59kgs. Mean bone mineral density for female lightweight rowers (n=9, mean age 20.5 yrs) was significantly greater than (p \u3c 0.05) (independent t-Test) established norms for 19yr olds (n=20). Physical performance data (Max VO2, Muscular force, power and fatiguability) were not significantly different from pre-training values. However, normalised data for peak torque (right leg) at 120 and 180 deg/secs were significantly different (p \u3c 0.05). The dry (land based) performance test was significantly different (p \u3c 0.001), which indicated that all individual performance results were improving.
These data do not suggest that Lightweight rowers experience any health or development problems while involved in high intensity training whilst diet restricting. However, it is recommended that further study be continued until the National titles when the regulation weight limit of 59kgs will be achieved
Some aspects of the development of the girder bridge 1820-1890
The thesis explores very briefly the background history of bridge construction from Roman times, and the development of masonry arch bridges to suit the spreading network of roads, both in Britain and overseas. The need for the girder bridge made itself felt with the coming of the railways, and early examples in timber, mainly in America, soon gave way to iron.
The girder and beam were mostly used on their own as bridging solutions, but also gave an impetus to suspension bridge design in their application as stiffening trusses.
The bridge girders could not be effectively and safely used without appropriate calculation, and early efforts to solve this problem were devised by Louis Navier in France and Eaton Hodgkinson in England, on which some comment is made.
It was not long before various types of girder began to emerge, often named after their inventors, or patentees.
The thesis explores firstly the development of the girder bridge in Britain from 1820 to the 1860s, and then the corresponding development in America over the same period.
The suspension bridge, the arch bridge and the tied arch are not included, as they are not strictly speaking, girder bridges. The girder bridge is typically a structure with near parallel flanges in which the load is shared between each, and there are web members joining the flanges to resist the shear loads. There are some bridges which appear to deny classification, but a little careful assessment will usually allow a distinction to be made, as in the case of Brunel's bridge at Saltash.
The study continues up to the advent of cantilever bridges, and in particular the Forth Rail Bridge, completed in 1890. This bridge was described by its designers, not as a cantilever as it is commonly known nowadays; but as a "continuous girder bridge".
After 1890, design principles and methods of calculation were well developed. Further innovation did not take place until more recent times, and it has been chosen to end the study at that dat
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