Engineering Commons^™

Minimum Distance Classification In Remote Sensing, A. G. Wacker, D. A. Landgrebe

LARS Technical Reports

The utilization of minimum distance classification methods in remote sensing problems, such as crop species identification, is considered. Minimum distance classifiers belong to a family of classifiers referred to as sample classifiers. In such classifiers the items that are classified are groups of measurement vectors (e.g. all measurement vectors from an agricultural field), rather than individual vectors as in more conventional vector classifiers.

Specifically in minimum distance classification a sample (i.e. group of vectors) is classified into the class whose known or estimated distribution most closely resembles the estimated distribution of the sample to be classified. The measure of resemblance …

Factors Influencing Dehardening And Rehardening Of Forsythia X Intermedia Stems : Progress Report No. 4, David Foster Hamilton

JTRP Technical Reports

No abstract provided.

Evaluation Of Transition Curves On Two-Lane Rural Highways, Robert Walter Lyford

JTRP Technical Reports

No abstract provided.

Procedure Manual For Determining Traffic Patterns For A Simplified Planning Procedure For Major Thoroughfare Planning In Small Urban Areas : Interim Report, Andrew Delaney Jones, William Louise Grecco

JTRP Technical Reports

No abstract provided.

Improvement Of Kentucky Bluegrass Through Selection And Breeding, William Hugh Daniel

JTRP Technical Reports

No abstract provided.

Treatment Of Sanitary Wastes At Interstate Highway Rest Areas, Phase I, James E. Etzel, David W. Hawkins, Kwang Myeung Cho

JTRP Technical Reports

No abstract provided.

Computerized Slope Stability: A Sliding Block Model, Aditya Mohan

JTRP Technical Reports

No abstract provided.

A Simplified Procedure For Major Thoroughfare Planning In Small Urban Areas, Andrew Delaney Jones, William Louise Grecco

JTRP Technical Reports

No abstract provided.

Factors Influencing Dehardening And Rehardening Of Forsythia X Intermedia Stems : Technical Paper, David Foster Hamilton

JTRP Technical Reports

No abstract provided.

Promotion Of Rooting In Root Cutting Propagation : Technical Paper, Robert E. Mcniel

JTRP Technical Reports

No abstract provided.

Thermally Insulated Test Road: State Road 26 Final Performance And Temperature Prediction Studies, James A. Horton

JTRP Technical Reports

No abstract provided.

The Nature Of The Past-Aggregate Interface : Interim Report, David Watson Hadley

JTRP Technical Reports

No abstract provided.

Current Mechanical Fastener Specifications And Test Procedure, John Fraczek

American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present)

No abstract provided.

Pavement Roughness Measurement And Evaluation, Rolands L. Rizenbergs, James L. Burchett, Larry E. Davis

Kentucky Transportation Center Research Report

Vertical accelerations of a passenger in an automobile are automatically summed while traveling a section of road at 51.5 mph. A roughness index is obtained by summing the accelerations and dividing by the time elapsed during the test. The index is subjectively related to the riding quality of pavements. Continuity in measurements since 1957 has been preserved through correlations among successive vehicles involved and reference pavements.

In general, bituminous construction has yielded smoother-riding surfaces than concrete construction. No major improvements in construction were noted on bituminous pavements since 1962. The ride quality of concrete pavements, however, has improved on those …

Kentucky Pavement (Bituminous) Performance Evaluations And Design Studies, James H. Havens

Kentucky Transportation Center Research Report

No abstract provided.

Thermal Expansion Of Tungsten At Low Temperatures, Jayant S. Shah, Martin E. Straumanis

Materials Science and Engineering Faculty Research & Creative Works

Lattice parameters, thermal expansion coefficients, and Grüneisen parameters of tungsten are determined by an x-ray method in the temperature range of 180-40 K without the use of liquid gases. Lattice parameters are expressed as a function of temperature. Thermal-expansion coefficients decrease with temperature and show no anomaly in contrast to a hypothesis proposed by Featherston and Neighbours. Grüneisen parameters γ are decreasing with temperature in accordance with the theoretical predictions. © 1971 The American Institute of Physics.

Field Identification Of Soils And Aggregates For County Roads, D. G. Shurig, Jean E. Hittle

Indiana Local Technical Assistance Program (LTAP) Publications

The primary purpose of this bulletin is to provide instruction to Indiana county road personnel on rating the quality of soils and pit-run materials used in the construction and maintenance of county roads. A system of soil classification is presented which provides the county highway engineer, road supervisor and inspector alike, with a common language for identifying soil types, properties and problems.

The Lure Of Home, Tim Brady

Publications

This article recounts an aircraft accident that could have been avoided. The pilot ignored flight manual warnings to not fly in icing conditions. The pilot disregarded all advice to stay on the ground but he was anxious to get home and celebrate an occasion with his family. All lives lost on the flight.

The Pennsylvania State University

ACUTA: Other Publications

Attached is a draft of the charter membership 'letter we discussed at the meeting in Chicago last week. PLEASE. I have no special "pride of authorship" in this type of thing, so I implore you to be ruthless in your criticism, additions, deletions, etc. We want to entice a good membership drive, not put laurels on my head. So, if you'll go over this, make comments and return to me just as soon as possible, I compile the comments, prepare the final copy and have it printed.

Durability Of Traffic Paint On Portland Cement Concrete Pavements, Assaf S. Rahal

Kentucky Transportation Center Research Report

Performance of a series of transverse lines applied to a relatively new concrete pavement, utilizing primes and pretreatments, is reported. The report includes descriptions of the location of test lines and types of paint and pretreatments, performance histories, and analysis of results. Chlorinated rubber, epoxy, and urethane paints were the most durable. Neither pretreatment nor the use of primes significantly increased durability.

Holidays From Danger, Tim Brady

Publications

A reminder to be safe during holidays to prevent fires, avoid personal injury, and stay off the roads after drinking.

Front Matter, University Of Missouri--Rolla

Symposia on Turbulence in Liquids

No abstract provided.

Turbulent Interface Detector Using A Multiple Array Of Single Hot Wires, W. H. Schwarz

Symposia on Turbulence in Liquids

Intermittency circuits can be used to experimentally determine some of the properties of the turbulent interface that occur in turbulent shear flows. The signal I(x,t) is unity if turbulence is present at x and zero otherwise. Using the signals obtained from detectors at one or more points, certain statistical measures of the interface position Y(x,t) can be determined. Also using a linear array of conventional single hot-wire probes, the position of the interface can be detected continuously to within some small error. The intent of this h-detector is similar to the wave-height detector used in studies of sea surfaces. The …

Experiments In Magneto-Fluid-Mechanic Natural And Forced Heat Transfer From Horizontal Hot-Film Probes, P. F. Dunn, P. S. Lykoudis

Symposia on Turbulence in Liquids

Experiments investigating magneto-fluid-mechanic effects on the heat transfer of quartz-coated hot-film probes are described. A standard heat transfer-velocity calibration curve is obtained by traversing a probe, whose axis is aligned horizontally, in the presence of a magnetic field parallel to the probe's axis. The working medium is mercury. Results indicate a significant reduction of the probe1s heat transfer in both the free and forced convection regimes.

Turbulence Measurements With The Split-Film Anemometer Probe, B. W. Spencer, B. G. Jones

Symposia on Turbulence in Liquids

The newly developed split-film anemometer probe, manufactured by Thermo- Systems, Inc. of St. Paul, Minnesota, has been applied to the measurement of two-dimensional turbulence characteristics, including turbulent shear stress, in mixing layer and boundary layer shear flows. Probes of both 6-mil and 2- mil diameters were used which had the same physical dimensions as ordinary hot-film anemometer probes. The film on this sensor is split into two 170° elements resulting in two independent sensors. This enables the probe to detect vertical as well as axial components of the instantaneous velocity vector. It therefore serves the same purpose as an x-probe, …

The Unpolarized Electrode In A Pulsating Poiseuille Pipe Flow, B. M. Bergmann, T. H. Hodgson

Symposia on Turbulence in Liquids

In recent years three workers have described methods of measurement of unsteady flow quantities in water using unpolarized electrodes. Both Binder and Chuang have attempted measurements of turbulent velocity fluctuations, whereas Dumargue described a method of fluctuating pressure measurement.

In this paper, analysis and experiment were used to critically compare the previous workers' experiments. From measurements in an oscillating Poiseuille pipe flow it is concluded that an electrode positioned in the wall detects a signal with a phase angle of π/4 ahead of the fluctuating velocity as measured by a hot-film probe in the pipe center. This is exactly the …

Current Investigations Of Turbulent Shear, S. J. Kline, G. R. Offen, W. C. Reynolds

Symposia on Turbulence in Liquids

The paper covers first a short review of the history of research on turbulent shear and second a description of current experiments which may lead to further understanding.

The first portion categorizes the kinds of data which have been taken and discusses what can be learned from each. It then summarizes what is firmly established concerning the nature of turbulent shear, mostly from work of the past decade. A description of the several interpretations of these data under theoretic study by current leading researchers is then given.

The second portion of the paper discusses the extraordinarily difficult problem of identifying …

Interpretation Of Hot-Film Anemometer Response In A Non-Isothermal Field, W. E. Burchill, B. G. Jones

Symposia on Turbulence in Liquids

A new technique for interpretation of hot-film anemometer sensor response is described. This technique has been applied to simultaneous measurement of profiles of mean velocity, the three components of velocity vector fluctuation, and temperature fluctuation in non-isothermal pipe flow of water using multiple sensors. Sensors operated in the constant temperature mode (CTA) respond to both mean and fluctuating velocity and temperature. The influence of mean temperature gradient on CTA sensor response was eliminated by appropriate adjustment of the sensors' operating resistances as the temperature gradient was traversed. The adjustments were derived from analysis of linearized CTA sensor response. A sensor …

On Velocity Measurements In Non-Isothermal Turbulent Flows, R. Chevray, N. K. Tutu

Symposia on Turbulence in Liquids

Turbulent velocity measurements in non-isothermal flows are conventionally performed by constant current hot-wire anemometry. The procedure involved however is cumbersome, the output signals are nonlinear and more critically a continuous signal of velocity fluctuations is not provided. The method described here utilizes two orthogonal wires situated a fraction of a millimeter apart. The upstream wire is operated in a low overheat, constant-current compensated mode thus providing a signal proportional to temperature while the down-stream wire, practically unaffected by the thermal wake of the first wire is operated in the constant temperature mode. Compensation for the effects of local temperature on …

Near Wall Visual Measurements In Drag Reducing Flow, H. C. Hershey

Symposia on Turbulence in Liquids

A review of several explanations for the mechanisms of drag reduction is presented. Visual studies of ordinary liquids are reviewed briefly, and visual studies in drag reducing flow are discussed. Finally, current work at Ohio State University is described where high speed motion pictures will be taken of drag reducing flow using the technique of Brodkey and Corino.