IDEALS @ Illinois
https://www.ideals.illinois.edu:443
The DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material.Tue, 24 May 2016 18:53:47 GMT2016-05-24T18:53:47ZThe Life Cycles of Genres
http://hdl.handle.net/2142/90161
The Life Cycles of Genres
Underwood, Ted
Literary genres are social institutions constituted by particular traditions of production and reception. But the boundaries of those traditions are deeply contested; some scholars lump the Newgate novel and Agatha Christie as "crime fiction," others insist that genres change ceaselessly, or displace each other at regular generational intervals. This essay gathers groups of texts linked by particular sites of reception, but also models the textual similarities between those groups in order to test conflicting theories about the rhythms of change that organize the history of genre.
Note: this is a preprint version of an article to appear in Cultural Analytics. There will be a few minor differences from the published version, notably that author-date citation style is replaced by footnotes.
genre; distant reading; reception history; text classification; computational social science
Mon, 23 May 2016 00:00:00 GMThttp://hdl.handle.net/2142/901612016-05-23T00:00:00ZUnderwood, TedGeologic study of longwall sites in northern Illinois
http://hdl.handle.net/2142/90160
Geologic study of longwall sites in northern Illinois
Longwall mining - Illinois; Coal mine waste - Illinois; Reclamation of land - Illinois; Geology - Illinois
Sat, 01 Jan 1983 00:00:00 GMThttp://hdl.handle.net/2142/901601983-01-01T00:00:00ZEffect of raindrop impact and surface roughness on sheet flow
http://hdl.handle.net/2142/90159
Effect of raindrop impact and surface roughness on sheet flow
Wenzel, Harry, G., Jr.
An experimental and analytical study was conducted to investigate the mechanics of sheet flow as it is affected by rainfall. Water surface profile data were taken in a laboratory flume using artificially generated rainfall and a hydraulically smooth surface. The one-dimensional spatially varied flow equation as developed from the momentum approach was then used to compute the boundary shear stress and subsequently a Weisbach type friction factor. It was found that the results below a Reynolds number of approximately 1000 could be expressed as f = C/NR where C increases with increasing rainfall intensity and surface slope. Velocity profile studies show that velocity in the surface region is retarded by the rainfall. Turbulence intensity measurements indicate that turbulence is generated at the surface due to the rainfall and also at the boundary for flow which would normally be laminar without rainfall. Spectral analysis of the turbulent measurements indicates that the rainfall shifts the turbulent energy to higher frequencies than would be the case without rainfall. Analysis of flow over rough surfaces taken by the Corps of Engineers shows that rainfall has little effect on resistance beyond the transition region and the transition point may be lowered by the presence of rainfall. A separate study of a single drop striking a stagnant water layer shows that the velocity and pressure field can be computed using a SyntheticCell-Fluid scheme to solve the Navier-Stokes equations for this case. A dimensionless maximum impact pressure model was developed and the velocity field and free surface configuration were studied. It was found that surface tension is significant, the diameter of the region of disturbance was approximately one inch, and that locally high shear stress are generated. These stresses could easily cause soil erosion.
Water resources center; Water resources center--Illinois; Hydrology and hydraulics; Impact (rainfall); Numerical analysis; Raindrops; Resistance; Roughness (hydraulic); Shear stress; Sheet flow; Soil erosion; Transition flow; Turbulence
Tue, 01 Sep 1970 00:00:00 GMThttp://hdl.handle.net/2142/901591970-09-01T00:00:00ZWenzel, Harry, G., Jr.Transport processes of particles in dilute suspensions in turbulent water flow–phase I
http://hdl.handle.net/2142/90158
Transport processes of particles in dilute suspensions in turbulent water flow–phase I
Jones, Barclay G.; Beoletto, James A.; Meek, Charcles C.; Ostensen, Raymond J.; Robin, Ronald
Modifications to an existing experimental system have been made and have been demonstrated to provide the required resolution and variable parameterization necessary for a detailed study of dilute particle suspensions in a turbulent water flow. These modifications together with the reasons for their necessity are discussed. Linearization of non-Stokesian drag has been accomplished through the introduction of a diagonal tensor into the Stokes drag force equation. It was found that non-Stokesian effects tend to be of minor importance in the response of water borne particles.
Water resources center; Water resources center--Illinois; Hydrology and hydraulics; Turbulent particulate transport; Dilute suspension; Water pollution; Non-Stokesian; Flow measurements; Dispersion; Turbulent flow
Mon, 01 Mar 1971 00:00:00 GMThttp://hdl.handle.net/2142/901581971-03-01T00:00:00ZJones, Barclay G.Beoletto, James A.Meek, Charcles C.Ostensen, Raymond J.Robin, RonaldBase-flow recession in Illinois
http://hdl.handle.net/2142/90157
Base-flow recession in Illinois
Farvolden, Robert N.
Base-flow recession curves of nineteen Illinois streams were analyzed to determine the most significant factors which affected the base-flow recession rate. The eight most significant factors were (in order): number of days since the last major storm, average minimum daily temperature, average daily temperature, average maximum daily temperature, discharge at beginning of recession, average daily evaporation for one to five days preceding the beginning of the recession, average daily evaporation for the duration of the recession and total runoff. A regression equation for these variables was derived. The relationship between base-flow and the water depth in various wells was studied. Significant correlations were obtained for dry weather flow for some wells but the relationships were found to be invalid during periods of storm runoff. Tritium analyses of eight water samples from two different watersheds were made. The results indicated that a normal gravity flow system exists with shallow groundwater moving toward the streams rather than leaking to underlying aquifers.
Water resources center; Water resources center--Illinois; Hydrology and hydraulics; Base-flow; Groundwater movement; Hydrograph analysis; Recession curves; Surface runoff; Wells
Sun, 01 Aug 1971 00:00:00 GMThttp://hdl.handle.net/2142/901571971-08-01T00:00:00ZFarvolden, Robert N.Methodology for synthesis and optimization of diffusion patterns in flow systems
http://hdl.handle.net/2142/90156
Methodology for synthesis and optimization of diffusion patterns in flow systems
Maxwell, W. Hall C.; Chang, Kuo-Cheng
This analytic study used a generalization of Reichardt's hypothesis by Alexander, Baron & Comings to develop a unified treatment for the synthesis of diffusion patterns for mass, heat and momentum. The technique was applied for co-planar and co-axial flows, to a study of the effects of initial flux distribution and outlet shape on diffusion patterns; and to shallow submerged outlets. Four simple approximations to the P-function, involving only exponential and error functions, were found to represent flux distributions downstream from a circular jet of finite size at all points between the nozzle and infinity. The results may be applied in the study and design of discharge outlets, syphon spillways, hydraulic breakwaters and diffusion of tracers in streams and penstocks.
Water resources center; Water resources center--Illinois; Hydrology and hydraulics; Boundaries (surfaces); Diffusion; Flow characteristic; Flow profiles; Fluid flow; Free surfaces; Free turbulence; Heat flux; Hydraulics; Jets; Mass flux; Momentum flux; Similarities; Temperature; Tracers
Thu, 01 Jul 1971 00:00:00 GMThttp://hdl.handle.net/2142/901561971-07-01T00:00:00ZMaxwell, W. Hall C.Chang, Kuo-ChengSpatially varied open-channel flow equations
http://hdl.handle.net/2142/90155
Spatially varied open-channel flow equations
Yen, Ben Chie
Recent development and improvement in numerical techniques and computer capability enables more accurate numerical solutions of spatially varied flow problems such as various phases of urban storm runoffs. Consequently, it is desirable to re-examine fundamentally the compatibility of the flow equations used in solving unsteady spatially varied flow problems. To achieve this goal, the continuity, momentum, and energy equations for unsteady nonuniform flow of an incompressible viscous nonhomogeneous fluid with lateral flow into or leaving a channel of arbitrary geometry in cross section and alignment are formulated in integral form for a cross section by using the Leibnitz rule. The resulted equations are then transformed into one-dimensional form by introducing the necessary correction factors and these equations can be regarded as the unified open-channel flow equations for incompressib1.e fluids. The flow represented by these equations can be turbulent or laminar, rotational or irrotational, steady or unsteady, uniform or nonuniform, gradually or rapidly varied, subcritical or supercritical, with or without spatially and temporally variable lateral discharge. Flow equations for certain special cases are deduced from the derived general equations for the convenience of possible practical uses. Conventionally used various equations for open-channel flows are shown to be simplifications and approximations of special cases of the general equations. The inherent difference between the flow equations derived based on the energy and momentum concepts is discussed. Particular emphasis is given to the differences among the energy dissipation coefficient, the frictional resistance coefficient, and the total-head loss coefficient. Common hydraulic practice of using the Chezy, Manning, or Weisbach formulas to evaluate the dissipated energy gradient or the friction slope is only an approximation.
Water resources center; Water resources center--Illinois; Hydrology and hydraulics; Energy equation; Flow resistance; Fluid mechanics; Homogeneous fluid; Hydraulics; Momentum equation; Nonhomogeneous fluid; Nonuniform flow; Open-channel flow; Spatially varied flow; Unsteady flow; Water flow
Wed, 01 Dec 1971 00:00:00 GMThttp://hdl.handle.net/2142/901551971-12-01T00:00:00ZYen, Ben ChieGreat Lakes hydrology by months, 1946-1946
http://hdl.handle.net/2142/90154
Great Lakes hydrology by months, 1946-1946
Jones, Douglas M.A.; Meredith, Dale D.
Monthly estimates of precipitation on each lake, evaporation from each lake surface, and runoff into each lake from surrounding land areas are developed for the Great Lakes for calendar years 1946 through 1965. Overlake precipitation is estimated by extrapolation of the land isohyetal patterns multiplied by lake-land ratios as established from island-shore stations. Evaporation by months is calculated using the mass transfer method. An isopleth mapping technique is used to estimate the runoff. The net basin supply for a lake is equal to the total runoff plus the precipitation on the lake surface minus the evaporation from the lake surface. The monthly and annual net basin supplies for each lake are determined from the estimated values of runoff, precipitation, and evaporation and are compared with the monthly and annual net basin supplies as reported by the U.S. Army Corps of Engineers. The estimated 20 year mean annual net basin supply for all lakes is about 6 per cent less than the value reported by the U.S. Army Corps of Engineers.
Water resources center; Water resources center--Illinois; Hydrology and hydraulics; Great Lakes; Hydrologic budget; Precipitation; Evaporation; Runoff
Sat, 01 Apr 1972 00:00:00 GMThttp://hdl.handle.net/2142/901541972-04-01T00:00:00ZJones, Douglas M.A.Meredith, Dale D.Hydraulic geometry and low streamflow regimen
http://hdl.handle.net/2142/90153
Hydraulic geometry and low streamflow regimen
Stall, John B.; Yang, Chih Ted
Unit stream power defined as the time rate of potential energy expenditure per unit weight of water of a natural stream has been studied intensively in this report. It is shown that the distribution and variation of unit stream power have a determinate effect on the behavior of a natural stream. The unit stream power can be regulated by a stream through the combined process of meandering, forming pools and riffles, and carving a concave longitudinal stream bed profile. A study of the Kaskaskia River basin shows that sinuosity increases in the downstream direction by meandering. Field measurements made along the Middle Fork Vermilion River indicate that unit stream power can be minimized by the formation of pools and riffles. The hydraulic geometry--unit stream power equations developed for 9 river basins in the United States show that un-it stream power in a river basin decreases with increasing frequency of flow and drainage area. These results are evidence of different levels of self adjustment made by a natural stream to minimize its unit stream power in accordance with the law of least time rate of energy expenditure. The calculated dimensionless dispersion coefficients--at 11 gaging stations in the Kaskaskia River Basin show that the coefficients increase with increasing width-depth ratio.
Water resources center; Water resources center--Illinois; Hydrology and hydraulics; Channels; Dispersion; Energy; Hydraulic geometry; Meanders; Pools; Riffles; Stream systems; Unit stream power
Sat, 01 Jul 1972 00:00:00 GMThttp://hdl.handle.net/2142/901531972-07-01T00:00:00ZStall, John B.Yang, Chih TedAnnotated bibliography on Great Lakes hydrology
http://hdl.handle.net/2142/90152
Annotated bibliography on Great Lakes hydrology
Buetikofer,Larry B.; Meredith, Dale D.
This bibliography contains 233 literature references on Great Lakes hydrology. The references are listed alphabetically by author for the following topics: precipitation; evaporation; runoff; lake levels and flows; hydrologic budget; currents, winds, and water temperature; and general.
Water resources center; Water resources center--Illinois; Hydrology and hydraulics; Great Lakes; Precipitation; Evaporation; Runoff; Lake levels; Hydrologic budget; Water temperature
Fri, 01 Sep 1972 00:00:00 GMThttp://hdl.handle.net/2142/901521972-09-01T00:00:00ZBuetikofer,Larry B.Meredith, Dale D.