| LAMINAR, TRANSITIONAL AND TURBULENT FLOW WITH ADVERSE PRESSURE GRADIENT ON A CONE-FLARE AT MACH 10. |
DEC 1965 |
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| Authors:
Victor Zakkay; Alan Bos; Paul F. Jensen Jr.; NEW YORK UNIV N Y
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 | An experimental investigation of the boundary layer on a cone-flare body at Mach 10 is presented. Measurements of pressure, heat transfer and boundary layer thickness are made in regions of zero and adverse pressure gradient. Several noses are fitted to the cone to produce blunted cone-flares, which are used to study separation. The experimental results are compared to some recent analytical investigations. The results showed a small amount of blunting ... |
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| A HIGH MACH NUMBER HIGH REYNOLDS NUMBER HYPERSONIC FACILITY. |
OCT 1965 |
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| Authors:
Antonio Ferri; Victor Zakkay; Lawrence Carr; NEW YORK UNIV N Y
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| A high Mach number (M = 14) high Reynolds number (20,000,000/ft.) facility was designed and built. This facility is capable of operating under a stagnation pressure of 30,000 p.s.i. and a stagnation temperature of 2500R. A four second running time will be available with the present design; however, the possibility of obtaining higher running time may be accomplished by increasing the air storage system. The possibility of increasing the storage ... |
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| ON THE INITIAL CONDITIONS FOR BOUNDARY LAYER EQUATIONS, |
OCT 1965 |
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| Authors:
Lu Ting; NEW YORK UNIV N Y
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| A three dimensional boundary layer with two components of velocity, v, w, much smaller than the third component, u, which is along the inviscid stream line, the x-coordinate, is studied. It is shown that the boundary layer equations lead to a compatibility equation on the four initial data of the three velocity components and the density, while the enthalpy is related to density by the equation of state. When the ... |
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| AN APPROXIMATE SOLUTION OF THE CROCCO EQUATION, |
OCT 1965 |
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| Authors:
Charles J. Ruger; NEW YORK UNIV N Y
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| The Crocco equation for zero pressure gradient and a constant viscosity-density product is linearized and the results applied to boundary layer problems where the given initial profile is much different from Blasius profile. Three linearization assumptions are used, each of which leads to an eigenvalue problem having a discrete spectrum of eigenvalues. This allows the shear stress to be expressed as a series. Far downstream of the initial station the ... |
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| QUANTUM STATISTICAL DYNAMICS OF LASER AMPLIFIERS, |
08 JUN 1965 |
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| Authors:
A. E. Glassfold; D. Holliday; NEW YORK UNIV N Y
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| A quantum statistical procedure for analyzing radiation fields interacting with other systems has been developed and applied to a model laser operating as a linear amplifier. |
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| TOPICS IN THE THEORY OF TRAJECTORIES FOR A PARTICLE. |
JUN 1965 |
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| Authors:
James Biscardi Jr.; NEW YORK UNIV N Y
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| STATISTICAL CONFIDENCE INTERVALS, THEIR USES AND MISUSES IN RELIABILITY ENGINEERING, |
MAY 1965 |
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| Authors:
John H. K. Kao; NEW YORK UNIV N Y
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| THE RADIAL VARIATION OF THE EDDY VISCOSITY IN COMPRESSIBLE TURBULENT JET FLOWS. |
MAY 1965 |
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| Authors:
Victor Zakkay; Egon Krause; NEW YORK UNIV N Y
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| A FINITE DIFFERENCES SOLUTION FOR AN INITIAL VALUE PROBLEM IN A COMPRESSIBLE LAMINAR BOUNDARY LAYER. |
MAY 1965 |
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| Authors:
Gdalia Kleinstein; NEW YORK UNIV N Y
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| A finite differences solution utilizing an explicit scheme is presented for an initial value problem in an inhomogeneous compressible laminary boundary layer. The method is to be employed in the determination of velocity, temperature, and concentration profiles in the boundary layer; and heat transfer and shear distributions on the wall. The program (written for an IBM 7094 computer) is designed to accomodate either constant or variable transport properties. Diffusion coefficients ... |
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| THE ANODIC REACTION MECHANISM IN FUSED SILVER NITRATE. |
16 FEB 1965 |
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| Authors:
Nirmal Gupta; Benson R. Sundheim; NEW YORK UNIV N Y
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| The oxidation of the nitrate ion at a Pt anode in molten AgNO3 was studied by steady state and fast sweep voltammetry. Two mechanisms are found, both leading to NO2 + 1/2O2. The first is susceptible to transport control and has an N-alpha value of 1.17 at 238C. It is postulated that this mechanism involves the preliminary dissociation of the nitrate ion to form NO2(+) + O2(=), the latter (possibly ... |
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| AN INTRODUCTION TO ERROR CONTROL TECHNIQUES, |
JAN 1965 |
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| Authors:
Jack Keil Wolf; NEW YORK UNIV N Y
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| The objective of this report is to formulate a common structure in which may be imbedded various techniques for the control of errors in communication systems. The relationship between digital error-correction and errordetection coding techniques and modulation systems is examined. A brief exposition is presented on the more promising techniques which have been proposed for digital coding. The report concludes with recommendations for future investigations. (Author) |
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| ENCODING IN THE PERCEPTUAL (VISUAL) SERIAL POSITION EFFECT, |
DEC 1964 |
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| Authors:
Murray Glanzer; NEW YORK UNIV N Y
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| On the basis of the verbal loop hypothesis, specific changes in the shape of the perceptual serial position curve were predicted as a function of encoding, or verbalization, length of the stimulus, and stimulus exposure time. It was also decided to explore the effects of post-stimulus delay, both with and without an interpolated task. Using eight-place binary numbers, a group of twelve subjects was tested to evaluate the effect of ... |
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| CRITERIA AND TRANSFER OF TRAINING. |
NOV 1964 |
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| Authors:
Joseph Weitz; NEW YORK UNIV N Y
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| It was hypothesized that task approach might be the more salient feature of transfer of training early in an easy task, whereas with a more difficult task, the task content is a greater determiner of the early course of the learning in the transfer situation. Here the effectiveness of the task approach does not become apparent until somewhat later. In order to investigate these hypotheses further, it was thought advisable ... |
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| EXTRAPOLATION OF CROSS-SECTION DATA TO ZERO ENERGY FOR LONG-RANGE EFFECTIVE POTENTIALS. |
25 SEP 1964 |
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| Authors:
R. Oppenheim Berger ; Thomas F. O'Malley ; Larry Spruch; NEW YORK UNIV N Y
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| The effective one-body potential representing a particlecompound-system interaction usually has a very complicated short-range behavior, but a relatively simple, and more or less known, long-range tail U which can be nonlocal and energy-dependent. With U present, the usual effective-range-theory (ERT) expansion for a singlechannel scattering phase shift eta is inapplicable. Recent extensions of ERT include the effects of long-range potentials, but since eta then becomes very energydependent, one would need ... |
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| CODING AND USE OF INFORMATION IN PROBLEM SOLVING. |
31 MAY 1964 |
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| Authors:
Murray Glanzer; NEW YORK UNIV N Y
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| This report describes work completed and in progress on the encoding and storage mechanisms used by human subjects. Experiments are described in the areas of encoding of perceptual information and the storage of verbal materials. The work on the encoding of perceptual information was concerned with extending the application of the verbal loop hypothesis. It consisted of experimental reexamination of sets of stimuli previously analyzed with information-theoretic measures and experimental ... |
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| THE ANCHOR FOR THE SERIAL POSITION CURVE, |
22 MAY 1964 |
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| Authors:
Murray Glanzer; Richard Dolinsky; NEW YORK UNIV N Y
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| Two experiments were carried out to determine the cue used by Ss to anchor the serial position curve in rote learning. Experiment I was designed to evaluate the role of starting position and facilitated (pretrained) syllable in lists that contained no other cues as to beginning or end (closed cycle lists). The results show that the Ss anchor the curve on the starting position. These findings contradict both facilitation and ... |
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| ORIENTATION AND REACTIVITY IN FREE RADICAL AROMATIC SUBSTITUTION. |
17 APR 1964 |
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| Authors:
Robert T. Morrison; NEW YORK UNIV N Y
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| It was shown that data from product analysis give valid rate factors for free radical aromatic substitution, not only removing current doubts but putting these rate factors on firmer footing than ever before. A method of analysis of biaryl mixtures was worked out that gives rate factors about ten times as accurate as previous methods have given; and a method was devised for collecting reference samples of biaryls that elimates ... |
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| CHRONOPOTENTIOMETRIC STUDY OF ANIONIC DIFFUSION IN THE POTASSIUM-LIQUID AMMONIA SYSTEM. |
JAN 1964 |
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| Authors:
Roger P. Gordon; NEW YORK UNIV N Y
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| A chronopotentiometric study was made of anion diffusion in solutions of potassium in liquid ammonia ranging in concentration from 0.1M in the presence of excess KI. Diffusion coefficients for the electron of the order of 5 x 10 to the -5th power sq cm/sec were obtained. Measurements were also made in the absence of supporting electrolyte and led to apparent integral diffusion coefficients of the order of 5 x 10 ... |
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| THE INTERPRETATION OF WAVE SPECTRA IN TERMS OF THE WIND PROFILE INSTEAD OF THE WIND MEASURED AT A CONSTANT HEIGHT, |
DEC 1963 |
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| Authors:
Willard J. Pierson Jr.; NEW YORK UNIV N Y
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| The efect of the variation of the mean wind with height (as a function of the variously proposed drag coefficients) on the interpretation of wave spectra for fully developed seas is analyzed. It is found that this effect brings the results of Neumann, Wilson, and Moskowitz and Pierson into closer agreement. Further improvement in wave theory will depend on the solution of problems in turbulence and on more precise measurements ... |
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| DECAY OF ISOTROPIC TURBULENCE IN THE DIRECTINTERACTION APPROXIMATION, |
NOV 1963 |
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| Authors:
ROBERT H. KRAICHNAN; NEW YORK UNIV N Y
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| The direct-interaction equations for the decay of isotropic turbulence are integrated numerically with initial spectra of several shapes and initial Reynolds values of R less than or in the vicinity of 40. Results are presented for the evolution with time of total energy, dissipation, energy transfer, skewness factor, and other integral quantities, together with the associated wavenumber spectra. Similarity and self-preservation features of the evolving spectra are exhibited. The results ... |
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| A REPORT ON THE CONVERSION OF U. S. ARMY T-BOAT 427 TO AN OCEANOGRAPHIC RESEARCH VESSEL, |
NOV 1963 |
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| Authors:
James Gibbons; NEW YORK UNIV N Y
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| The basic work consisted of the following tasks: (1) cleaning and painting of hull, superstructure and interior spaces; reconditioning of machinery and equipment, addition of electronic aids to navigation, addition of a 20 KW AC generating plant and associated distribution system, addition of 5 tons of iron ballast, and a complete renovation of the existing cargo hold for laboratory use; (2) providing living accomodations and the installation of scientific equipment; ... |
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| RESEARCH IN FUNDAMENTAL PARTICLE PHYSICS. |
OCT 1963 |
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| Authors:
Malvin A. Ruderman; NEW YORK UNIV N Y
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| MOLECULAR FREQUENCY STANDARD PROJECT. |
24 SEP 1963 |
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| Authors:
Leon Esterowitz; NEW YORK UNIV N Y
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| Work is reported on:(1) molecular frequency standards, (2) microwave spectrometers, (3) hyperfine structure of the rotational spectrum of HDO, (4) rotational spectrum of formaldahyde, (5) S-band spectrum of nitrogen dioxide, and (6) the dipole moment N15O2. (Author) |
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| DIRECT-INTERACTION APPROXIMATION FOR SHEAR AND THERMALLY-DRIVEN TURBULENCE, |
SEP 1963 |
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| Authors:
ROBERT H. KRAICHNAN; NEW YORK UNIV N Y
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| The direct-interaction approximation for turbulence is extended to shear flows and Boussinesq convection contained in regions of arbitrary size and shape. It is pointed out that the approximation provides a consistent generalization of mixing-length concepts which continues to be applicable when the scale of inhomogeneity is comparable to the effective mixing length. The degree of faithfulness to be expected of the approximation is discussed on the basis of inferences from ... |
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| APPROXIMATIONS FOR STEADY-STATE ISOTROPIC TURBULENCE, |
SEP 1963 |
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| Authors:
ROBERT H. KRAICHNAN; NEW YORK UNIV N Y
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| The direct-interaction approximation for turbulence maintained by stationary, isotropic, random stirring forces is formulated in the wavenumberfrequency domain. Further, simplifying approximations are made. The final equations involve the wavenumber energy-spectrum, a characteristic correlation frequency for each wavenumber, and a characteristic response frequency for each wavenumber. A relation is exhibited between the simplified equations and a Fokker-Planck type approximation recently proposed by S. F. Edwards. (Author) |
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| ON THE SYNTHESIS OF THRESHOLD DEVICES, |
SEP 1963 |
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| Authors:
Philip Kaszerman; NEW YORK UNIV N Y
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| A Boolean function of n variables may be defined as a mapping from the vertices of an n-dimensional hypercube to (TRUE, FALSE). A threshold function is defined as a Boolean function whose TRUE vertices are separable from the FALSE vertices by a hyperplane. It is shown that the vertices of the above hypercube lie on the surface of a hypersphere and are distributed uniformly over the surface of this hypersphere. ... |
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| MATERIALS FOR THERMOELECTRIC GENERATORS. |
MAY 1963 |
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| Authors:
A. Machonis; J. Rivera; I. Cadoff; NEW YORK UNIV N Y
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| The electronic properties of single crystals of alloys of PbTe and SnTe in various ratios between the two limits are being studied. PbTe and SnTe are isomorphous and form a continuous series of solid solutions. The related electronic properties: electrical resistivity, thermoelectric power, and thermal conductivity follow patterns related to the observed change in carrier concentrations. The investigation of ZnSb was hampered by difficulties encountered in producing single-phase single-crystals. The ... |
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| RESEARCH RANDOMIZATION PROCEDURES AND FACTORIAL EXPERIMENTS. |
1963 |
2 pages |
| Authors:
NEW YORK UNIV N Y
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| SCATTERING, WEAK DECAYS, AND FINAL-STATE INTERACTIONS IN MODEL THEORIES IN A DRESSEDPARTICLE PICTURE, |
17 JUL 1962 |
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| Authors:
Kurt Haller; NEW YORK UNIV N Y
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| Elastic and inelastic collisions in the Lee model are treated in a dressed-particle picture. The procedure by which the renormalization constant Z disappears from the integral equations for the transition matrix is studied in detail. A new procedure is given for obtaining the exact transition matrix for N - theta scattering. A hypothetical fermion B is introduced and the decays B to N + theta B to V + theta, ... |
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| THERMOELECTRIC PROPERTIES OF THE SILVER NITRATE/SODIUM NITRATE SYSTEM |
19 JUN 1961 |
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| Authors:
RALPH SCHNEEBAUM; BENSON ROSS SUNDHEIM; NEW YORK UNIV N Y
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| The determination of the initial thermal emf at 310 C in the system Ag(T sub 1)/AgNO3, NaNO3/Ag(T sub 2) is described for the complete composition range. The thermoelectric power of pure AgNO3 (319 v/degree C) falls off slightly as the mole fraction of AgNO3 decreases and then rises sharply in dilute solutions. Extrapolation towards zero mole fraction of AgNO3 gives a value of 797 v/degree C. The phenomenological equations are ... |
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| RESPONSE MODE, PACING, AND MOTIVATIONAL EFFECTS IN TEACHING MACHINES |
16 JUN 1961 |
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| Authors:
Robert E. Silverman; MILLICENT ALTER; NEW YORK UNIV N Y
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| Three experiments were performed to study the effects of response mode; one experiment was done to study pacing and one experiment dealt with the motivational effects of teaching machines. The first three experiments indicated that requiring the student to make an overt response does not facilitate programmed learning, nor is the constructing of a response, whether it be overt or covert, necessarily advantageous. The fourth experiment indicated that pacing will ... |
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| INVESTIGATION OF CREEP BUCKLING OF COLUMNS AND PLATES. PART III: CREEP BUCKLING EXPERIMENTS WITH COLUMNS OF 2024-0 ALUMINUM ALLOY |
JUN 1961 |
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| Authors:
Ralph Papirno; George Gerard; NEW YORK UNIV N Y
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| Experimental data for short tim nd creep buckling of Al alloy 2024-0 columns at 500 F were collected. Two slenderness ratios, 40 and 60, were tested each with simulated pinned and fixed ends. Compressive short time and compressive creep data for the Al alloy were collected. A technique, whereby end shortening and central deflection data are autographically recorded both during the period when the creep load was being applied ... |
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| INVESTIGATION OF CREEP BUCKLING OF COLUMNS AND PLATES. PART IV. COLUMN CREEP BUCKLING THEORY AND CORRELATION WITH EXPERIMENTS. |
1961 |
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| Authors:
G. Gerard; R. Papirno; NEW YORK UNIV N Y
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| DIFFRACTION BY COMBINATIONS OF OBSTACLES, IN THE MCGILL SYMPOSIUM ON MICROWAVE OPTICS, PART II DIFFRACTION AND SCATTERING, P196-201 |
APR 1959 |
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| Authors:
S. Karp; NEW YORK UNIV N Y
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| THE GEOMETRIC OPTICS THEORY OF DIFFRACTION, IN THE MCGILL SYMPOSIUM ON MICROWAVE OPTICS, PART II DIFFRACTION AND SCATTERING, P207-210 |
APR 1959 |
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| Authors:
J.B. KELLER; NEW YORK UNIV N Y
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| ASYMPTOTIC SOLUTION OF LINEAR PARTIAL DIFFERENTIAL EQUATIONS AND THE WKB METHOD, IN THE MCGILL SYMPOSIUM ON MICROWAVE OPTICS, PART II, DIFFRACTION AND SCATTERING, P213-214 |
APR 1959 |
|
| Authors:
M. KLINE; NEW YORK UNIV N Y
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| CONFERENCE ON THE PHYSICS OF ELECTRONIC AND ATOMIC COLLISIONS, JANUARY 27 AND 28, 1958. |
1958 |
|
| Authors:
NEW YORK UNIV N Y
|
| Abstracts are included of papers dealing with elastic and inelastic electron-atom scattering, atom-atom and atom-ion collisions, photon-atom impacts, charge exchange, and special topics. |
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| EXPERIMENTAL ANALYSIS OF PROBLEM SOLVING BEHAVIOR |
01 FEB 1957 |
|
| Authors:
Howard H. Kendler; NEW YORK UNIV N Y
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| BUCKLING OF SANDWICH CYLINDERS UNDER COMBINED COMPRESSION, TORSION, AND BENDING LOADS |
MAY 1953 |
1 pages |
| Authors:
Chi-Teh Wang; ROBERT J. VACCARO; DANIEL F. DESANTO; NEW YORK UNIV N Y
|
 | Buckling loads are calculated by using Galerkin's method to sol ve Donnell's equation modified to include the effects of transverse shear for sandwich curved plates and shells. These loads are plotted in the form of interaction curves. In the limiting cases of bending alone, axial compression alone, torsion alone, and combined bending and axial compression, the results agree with those previously obtained. |
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| A RATE OF TURN DEVICE FOR USE WITH THE 15-J-4-Q MOVING RADAR TARGET GENERATOR: ITS DESIGN AND EVALUATION. |
11 MAR 1953 |
|
| Authors:
D. J. Capuano; G. J. Fox; S. Veniar; NEW YORK UNIV N Y
|
| The report describes the development, design and evaluation of a rate-of-turn device for use with a radar target generator. To demonstrate the relative effectiveness of this device in air-intercept problems, a laboratory comparison with another model (15-J-4-s) is included. Although the two devices differ somewhat in their design features, there is sufficient overlap in their functions to warrant this comparison and thus, arrive at recommendations for future models based on ... |
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| PRELIMINARY LAYOUT OF CONTROLS AND DISPLAYS ON THE APA-56 PRODUCTION CONSOLE. |
APR 1952 |
20 pages |
| Authors:
William Smorczewski; NEW YORK UNIV N Y
|
| The purpose of the report is to present the results of a study to determine the optimal layout of the controls and displays of the AN/APA-56 console to conform as much as possible with human engineering principles. The APA-56 consoles are the main components of the airborne Combat Information Center in the WV-2. The air control officer (ACO) using the console obtains the radar information which permits him to carry ... |
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| EXPERIMENTAL METHODS OF EVALUATING A SYSTEM: THE AIRBORNE C.I.C. |
JUL 1951 |
|
| Authors:
Robert L. Chapman; NEW YORK UNIV N Y
|
| The report concerns the evaluation, from the human engineering point of view, of an airborne Combat Information Center (Cadillac III). The purpose of the report is to describe the nature of the research problem by listing the variables which possibly influence the system's performance, to state some principles for systems research which have been evolved, and to report certain tentative results. (Author) |
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| FUNCTIONAL RELATIONSHIP OF TIME DENSITY TO THE DETECTION OF DISCRETE RADAR TARGET EVENTS. |
APR 1951 |
|
| Authors:
H. Wallace Sinaiko; Arthur Lefford; Robert E. Taubman; NEW YORK UNIV N Y
|
| The purpose of the laboratory study was twofold: (a) To explore the functional relations between time density and the probability that a radar operator would detect several different kinds of scope events, and (b) To develop a 'difficulty index' for these different scope events which could be used in controlling input stimuli for further experimental study on the Cadillac III Combat Information Center system. (Time density is defined as the ... |
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| LAYOUT OF THE COMBAT INFORMATION CENTER IN THE PO-2W AIRCRAFT. |
APR 1951 |
|
| Authors:
Joseph G. Adiletta; NEW YORK UNIV N Y
|
| The report represents the results of a study conducted to find the optimal layout of electronic equipment for the airborne Combat Information Center for the PO-2W aircraft. It was found that, in arranging equipment in an airborne CIC, there were four levels of importance into which the various considerations fell: (1) Availability of central displays; (2) Observation of the activities of certain personnel by the CIC Officer, Ability of the ... |
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| SUPPLEMENT TO MODIFICATION OF THE CONTROLS OF THE IP-48/APA-56 RANGE-AZIMUTH INDICATOR. |
JAN 1951 |
|
| Authors:
Joseph G. Adiletta; Robert L. Chapman; NEW YORK UNIV N Y
|
| The report discusses the acceptance of certain compromises in the APA-56 recommendations. |
|
| PRELIMINARY STUDIES OF DETECTION TIME AND OTHER FACTORS INVOLVED IN AEW PERFORMANCE. |
AUG 1950 |
|
| Authors:
Arthur Lefford; NEW YORK UNIV N Y
|
| The experiment deals with the effect of increasing the work load on the output of a single operator and PPI console. Work load was increased by increasing the number of targets on the scope face. The information obtained in the study is a necessary preliminary to the evaluation of the Cadillac III CIC system. A rationale for the evaluation of this system is presented. It was found that detection time ... |
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| SYMPOSIUM ON PROJECT CADILLAC. |
AUG 1950 |
|
| Authors:
NEW YORK UNIV N Y
|
| The activities of the New York University Human Engineering Project was reviewed. The laboratory facilities and gear were demonstrated during the two-day conference. A number of organizational and technical talks were presented by New York University personnel and by personnel of other Navy organizations. Abstracts of the principal talks are presented. |
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| MODIFICATION OF THE CONTROLS OF THE IP-48/APA-56 RANGE-AZIMUTH INDICATOR. |
JUL 1950 |
|
| Authors:
Joseph G. Adiletta; A. Harold Abrams; NEW YORK UNIV N Y
|
| The report presents the results of a study to determine how well the controls of the IP-48/APA-56 Range Azimuth Indicator Console conformed to accepted human engineering principles. |
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| TABULATION OF FAILURE REPORTS OF THE AN/APA-56 INSTALLATION FOR PROJECT CADILLAC. |
JUL 1950 |
|
| Authors:
David M. Goodman; NEW YORK UNIV N Y
|
| The report summarizes the equipment failures of the AN/APA-56 installation at the New York University Human Engineering Project at the Special Devices Center. Subject equipment has been in operation since 24 January 1950 and has accumulated some 500 hours of service since that time. A close check was maintained on the failures in this equipment. These failures are tabulated according to the date of their occurrence and the number of ... |
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| YIELD STRENGTH, MICROSTRUCTURE AND FRACTURE TOUGHNESS |
|
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| Authors:
H. Margolin; M. A. Greenfield; I. Greenhut; NEW YORK UNIV N Y
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Reports by Corporate Author
