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You searched for +publisher:"Texas A&M University" +contributor:("Morgan, James R."). Showing records 1 – 3 of 3 total matches.

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Texas A&M University

1. Esser, Paul R. Measurements versus Predictions for a Hybrid (Hydrostatic plus Hydrodynamic Thrust Bearing for a Range of Orifice Diameters.

Degree: 2011, Texas A&M University

A fixed geometry hybrid thrust bearing is investigated with three different supply orifice diameters. The test rig uses a face-to-face thrust bearing design, with the test bearing acting as the rotor loading mechanism. A hydraulic shaker applies the static axial load, which is reacted by a second thrust bearing. The rotor is supported radially by two water-lubricated fluid film journal bearings and is attached to a 30,600 rpm motor via a high speed coupling with very low axial stiffness. Thrust bearings with three different orifice diameters (1.63, 1.80, and 1.93 mm) are tested for a range of supply pressures, fluid film thicknesses, and rotational speeds. The water-lubricated test bearings have eight pockets, with feed orifices located centrally in each pocket. Experimental results are comparted to predictions found using bulk flow model HYDROTHRUST. Analysis of the data reveals generally good agreements between predictions and measurements. Thrust-bearing inlet supply and inner radius flow rates all decreased with decreasing orifice diameters and bearing axial clearances. In most cases, the bearings with larger orifice diameters exhibit higher recess pressure ratios, operating clearances, and flow rates. The largest orifice diameter configuration does not display higher recess pressure ratios or operating clearances at high speeds for some supply pressures, but it does continue to require additional lubricant flow rate compared to the smaller orifice bearings. In these cases, the results are not reflected in predictions, which otherwise correlate very well with experimental measurements. Estimations of static loading axial stiffness are obtained using experimental results. An optimum hybrid thrust bearing orifice diameter will depend on the conditions of individual applications. Larger orifices generally provide larger operating clearances and higher stiffnesses, but also require higher flow rates. For most applications, a compromise of bearing performance parameters will be desired. The test results and comparisons presented will aid in sizing orifice diameters for future hybrid thrust bearing designs. Advisors/Committee Members: Childs, Dara W. (advisor), Morrison, Gerald (committee member), Morgan, James R. (committee member).

Subjects/Keywords: Thrust Bearings; Hybrid Thrust Bearing; Orifice Diameter

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Esser, P. R. (2011). Measurements versus Predictions for a Hybrid (Hydrostatic plus Hydrodynamic Thrust Bearing for a Range of Orifice Diameters. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-8002

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Esser, Paul R. “Measurements versus Predictions for a Hybrid (Hydrostatic plus Hydrodynamic Thrust Bearing for a Range of Orifice Diameters.” 2011. Thesis, Texas A&M University. Accessed June 25, 2019. http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-8002.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Esser, Paul R. “Measurements versus Predictions for a Hybrid (Hydrostatic plus Hydrodynamic Thrust Bearing for a Range of Orifice Diameters.” 2011. Web. 25 Jun 2019.

Vancouver:

Esser PR. Measurements versus Predictions for a Hybrid (Hydrostatic plus Hydrodynamic Thrust Bearing for a Range of Orifice Diameters. [Internet] [Thesis]. Texas A&M University; 2011. [cited 2019 Jun 25]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-8002.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Esser PR. Measurements versus Predictions for a Hybrid (Hydrostatic plus Hydrodynamic Thrust Bearing for a Range of Orifice Diameters. [Thesis]. Texas A&M University; 2011. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-8002

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


Texas A&M University

2. Huggins, Kristin Shawn. Professional Learning Communities as a Leadership-Initiated Reform Strategy for Math and Science Teaching in Urban High Schools.

Degree: 2011, Texas A&M University

Due to the urgency of not losing more urban high school students to academic failure and dropping out, the most promising reform efforts must be investigated. One of the most promising ways of creating successful high school reform that has been advocated is through restructuring schools into community-like organizations, often called professional learning communities. Yet, limited empirical research has been conducted concerning professional learning communities, especially in urban high schools. Thus, this research sought to understand how two urban high schools, one comprehensive high school in a large urban center and one small career academy high school in a medium-sized urban center, implemented professional learning communities as a leadership-initiated reform strategy for math and science teaching. Year-long interactions with each high school including in-depth observations and eighteen interviews, nine personnel from each site, revealed that certain organizational structures (e.g. social and human resources, structural conditions) must be in place for professional learning communities to have the potential to be a successful reform effort. Specifically, the way in which leadership supports professional learning communities through structure, pressure, and support was important. Both studies show that school context and leadership significantly affect the quality of professional learning communities and their ability to reform their instructional practices in order to increase student achievement. Advisors/Committee Members: Scheurich, James J. (advisor), Skrla, Linda E. (committee member), McKenzie, Kathryn B. (committee member), Morgan, James R. (committee member).

Subjects/Keywords: professional learning communities; leadership; school reform; urban high schools

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Huggins, K. S. (2011). Professional Learning Communities as a Leadership-Initiated Reform Strategy for Math and Science Teaching in Urban High Schools. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8391

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Huggins, Kristin Shawn. “Professional Learning Communities as a Leadership-Initiated Reform Strategy for Math and Science Teaching in Urban High Schools.” 2011. Thesis, Texas A&M University. Accessed June 25, 2019. http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8391.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Huggins, Kristin Shawn. “Professional Learning Communities as a Leadership-Initiated Reform Strategy for Math and Science Teaching in Urban High Schools.” 2011. Web. 25 Jun 2019.

Vancouver:

Huggins KS. Professional Learning Communities as a Leadership-Initiated Reform Strategy for Math and Science Teaching in Urban High Schools. [Internet] [Thesis]. Texas A&M University; 2011. [cited 2019 Jun 25]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8391.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Huggins KS. Professional Learning Communities as a Leadership-Initiated Reform Strategy for Math and Science Teaching in Urban High Schools. [Thesis]. Texas A&M University; 2011. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8391

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

3. Reynolds, Richard. The Importance of a Small Rural School District to the Community.

Degree: 2013, Texas A&M University

Hallsburg ISD is a small, rural, K-6 school district struggling to sustain its operations due to reduced funding from the state, decreased enrollment, and a decrease in the local tax base. This Problem in Practice Record of Study examines the sustainability issues associated with this school district and its importance to the community. Key stakeholders in the community and school district were interviewed to help develop a thick description of this district?s position in the community. Surveys were also sent to randomly selected, registered voters living in the district, to provide more in-depth data in the development of a thick description. District documents were also studied to provide more information in the plight of the district and provide for the triangulation of data. The interviews showed a very strong relationship between the participants and the school district. The key stakeholder participants included community leaders as well as parents of current and past students who represent the district demographics. The majority of this group supported raising their taxes to improve the school district and prevent it from consolidating with a neighboring district. While the surveys strongly supported the notion of how important the school was to the community, the results were not as favorable toward raising taxes. Only half of the survey respondents favored raising their taxes to keep the local school open and keeping local control of the district. The other half favored consolidating with a neighboring school district over raising their taxes. The overall results were very favorable toward the importance of the school district to the community. The challenging economic conditions place a very strong dilemma on many residents, as they would vote to lose their district over raising taxes. One recommendation to the district is to educate the community of the local tax situation. If Hallsburg ISD were to consolidate with any of the neighboring districts, the tax rate would immediately increase. This increase would be higher than the tax rate needed to sustain the district and keep Hallsburg School open. Advisors/Committee Members: Scheurich, Jim (advisor), Torres, Mario (committee member), Webb-Hasan, Gwendolyn (committee member), Morgan, James R (committee member).

Subjects/Keywords: community effect of consolidation; rural school district; consolidation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Reynolds, R. (2013). The Importance of a Small Rural School District to the Community. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/149236

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Reynolds, Richard. “The Importance of a Small Rural School District to the Community.” 2013. Thesis, Texas A&M University. Accessed June 25, 2019. http://hdl.handle.net/1969.1/149236.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Reynolds, Richard. “The Importance of a Small Rural School District to the Community.” 2013. Web. 25 Jun 2019.

Vancouver:

Reynolds R. The Importance of a Small Rural School District to the Community. [Internet] [Thesis]. Texas A&M University; 2013. [cited 2019 Jun 25]. Available from: http://hdl.handle.net/1969.1/149236.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Reynolds R. The Importance of a Small Rural School District to the Community. [Thesis]. Texas A&M University; 2013. Available from: http://hdl.handle.net/1969.1/149236

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.