The Study of Relief Map Construction and the Construction of a Relief Map of the Mt. Katahdin Area in Maine

The project of the construction of a relief map of the Mt. Katahdin area is a step toward the construction of a relief map of the State, by serving to create added interest in such a project and to solve some of the technical problems. The Mt. Katahdin area was chosen for this project because topographical data was available for building a relief map of Maine’s most prominent topographic feature and because of the familiarity of the writer with this section

The Church of England and her schools 1800-1977: a consideration of the role of the Church of England in the development of the state school system in England 1800-1977

This thesis covers the period 1800 to the present day and attempts to chart the role and influence of the Church of England on the development of a national system of schools in England. (Her role in the modern 'independent' sector is largely ignored, not because it is unimportant, but because it is in her dealings with the far larger number of Church schools within the State sector that matters of principle and practicality are more clearly revealed.) The chapters record in chronological order the history of the Church's role in schools except for chapter four, which examines some of the wide variety of ideas current amongst Victorian Churchmen on the matter of the nation's schooling. A peculiar characteristic of this subject is the manner in which it touches on many diverse points of principle, e. g. Church and State, the rights and freedom of the individual, the nature of education and of the Church and the powers of central and local government. The historical survey covers in detail the closely interconnected elements of national politics, practical problems, social developments, differing educational philosophies and movements within the Church. The history of the Church's 'rationale' concerning her schools (this phrase is preferred to the more neological 'theology of education') is considered at length in the final chapter. Behind any serious 'rationale' of denominational schools must lie a series of theological and educational presuppositions. That these presuppositions have varied widely between churchmen in this period is amply demonstrated by the long and difficult history of denominational schools recorded in earlier chapters. The thesis ends with a consideration of the present rationale for Church's schools and examines her position in the light of recent developments

Approximate operational calculus in chemical engineering

Approximations are suggested to extend the usefulness of operational calculus in solving boundary-value problems of interest to the chemical engineer. General approximations are outlined and specific ones illustrated. The use of computing machines with operational calculus is also considered.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/37293/1/690030229_ftp.pd

Bounded and patched solutions for boundary value problems

The technique of bounding, that is of constructing general solutions for all ranges of the variables and parameters from solutions for a few limiting and special cases, is outlined and illustrated for problems in conduction and convection. The technique of patching, that is of constructing approximate solutions for multiphase media by the combination of pseudo solutions for the different regions, is also outlined and illustrated for problems in conduction and freezing. The shortcomings and possible inaccuracies of these two techniques are indicated as well.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/37334/1/690110312_ftp.pd

Continually improving large scale long term visual navigation of a vehicle in dynamic urban environments

Abstract-This paper is about long term navigation in dynamic environments. In previous work we introduced a framework which stored distinct visual appearances of a workspace, known as experiences. These are used to improve localisation on future visits. In this work we introduce a new introspective process, executed between sorties, thats aims by careful discovery of the relationships between experiences, to further improve the performance of our system. We evaluate our new approach on 37km of stereo data captured over a three month period

Heat transfer by radiation through porous insulations

Radiant transfer through fibrous and foamed insulating materials was investigated theoretically and experimentally. Transmission measurements were made under isothermal conditions with a black-body source varying from 200° to 800°F. Bulk density and fiber and pore size were also varied. These data were interpreted successfully in terms of a simple theoretical model. The results provide design information and define the contributions of the several mechanisms of transfer.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/37305/1/690050413_ftp.pd

Confined jet mixing in the entrance of a tubular reactor

The equations for the conservation of momentum and mass were solved numerically for the region downstream from the exit of an axial jet into a confined annular stream of the same fluid. An implicit, alternating direction method was used. Numerical results were obtained for radius ratios of 0.281, 0.470, and 0.563 over a range of jet-to-annular velocities from 0.85 to 2.77. The values for the limiting case of the entrance region in pipe flow are in good agreement with the values of Christiansen and Lemmon and Ventras, Duda, and Bargeron. Solution of the equations for the conservation of chemical components produced results for component transfer in agreement with the experimental compositions obtained by Wood for jet mixing. Representative calculations were carried out for a chemical reaction. The results indicate the efficiency of the mixing process for this type of reactor. Experiments were carried out with water and dye to define the conditions under which the assumption of steady, laminar jet mixing is valid. The experiments also indicated the conditions and location of turbulent breakup of the jet.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/37362/1/690170338_ftp.pd

The thermal entrance region in fully developed turbulent flow

The temperature profile and the local rate of heat transfer from the wall were measured at 0.453, 1.13, 4.12, and 9.97 tube diameters downstream from a step increase in wall temperature for air in fully developed turbulent flow at Reynolds numbers of 15,000 and 65,000 in a 1.52-in. tube. The velocity profile and the pressure were also measured at these lengths. Radial and longitudinal temperature gradients, radial heat fluxes, and eddy diffusivities for heat and momentum transfer were computed from the measurements. The longitudinal temperature gradients at all radii were found to differ significantly from the mixed mean temperature gradient. Although the radial heat flux was a maximum at the wall, the radial heat-flux density, in terms of which the eddy diffusivity for heat transfer is usually defined, was found to go through a maximum near the wall and then to decrease almost linearly across the thermal boundary layer. The eddy diffusivity for heat transfer was found to be independent of length in the thermal entrance region and hence a function only of the fluid motion, as previously hypothesized.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/37310/1/690060220_ftp.pd

Heat transfer from acoustically resonating gas flames in a cylindrical burner

Heat transfer from premixed propane-air flames to the cooled wall of a 5-in. I.D. ramjet type of burner was studied with and without flame-generated, sonic oscillations. Frequency and amplitude measurements revealed that both transverse and longitudinal waves were resonant. The heat flux to the wall was increased significantly by the oscillations, but the gas temperature profile was changed very little. The local heat transfer coefficient was found to be a linear function of the sound pressure amplitude and independent of the mode and frequency of the resonant oscillations.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/37318/1/690070412_ftp.pd