K. A. Gilles, J. K. Hamilton, Fred H. Smith

K. A. Gilles, J. K. Hamilton, Fred H. Smith

First, the span of absolute judgment and the span of immediate memory impose severe limitations on the amount of information that we are able to receive, process, and remember. By organizing the stimulus input simultaneously into several dimensions and...

I. Introduction, 65. — II. A model of long-run growth, 66. — III. Possible growth patterns, 68. — IV. Examples, 73. — V. Behavior of interest and wage rates, 78. — VI. Extensions, 85. — VII. Qualifications, 91.

A mechanism for electron transferreactions is described, in which there is very little spatial overlap of the electronic orbitals of the two reacting molecules in the activated complex. Assuming such a mechanism, a quantitative theory of the rates of...

A theory is developed for the propagation of stress waves in a porous elastic solid containing compressible viscous fluid. The emphasis of the present treatment is on materials where fluid and solid are of comparable densities as for instance in the case...

We investigate several conceptions of linguistic structure to determine whether or not they can provide simple and "revealing" grammars that generate all of the sentences of English and only these. We find that no finite-state Markov process that produces...

The theory of propagation of stress waves in a porous elastic solid developed in Part I for the low‐frequency range is extended to higher frequencies. The breakdown of Poiseuille flow beyond the critical frequency is discussed for pores of flat and...

H. Enger Rosvold, Allan F. Mirsky, Irwin Sarason, Jr. Bransome Edwin D., Lloyd Henry Beck

A simple theory of traffic flow is developed by replacing individual vehicles with a continuous “fluid” density and applying an empirical relation between speed and density. Characteristic features of the resulting theory are a simple “graph-shearing”...

Theories of convection from maintained and instantaneous sources of buoyancy are developed, using methods which are applicable to stratified body fluids with any variation of density with height; detailed solutions have been presented for the case of...

The problem of the motions of a chain molecule diffusing in a viscous fluid under the influence of external forces or currents is considered for a particular model. This model is a chain of beads connected by ideal springs. Hydrodynamic interaction between...

In an earlier paper it was suggested that a knowledge ofthe elastic-stress variation in the neighborhood of anangular corner of an infinite plate would perhaps be ofvalue in analyzing the stress distribution at the base of aV-notch. As a part of a more...

Sir Geoffrey Taylor has recently discussed the dispersion of a solute under the simultaneous action of molecular diffusion and variation of the velocity of the solvent. A new basis for his analysis is presented here which removes the restrictions imposed...

A quantitative theory of damping and modulus changes due to dislocations is developed. It is found that the model used by Koehler of a pinned dislocation loop oscillating under the influence of an applied stress leads to two kinds of loss, one frequency...

In recent years increasing need has been felt for a body of systematic theoretical constructs which will discuss the general relationships of the empirical world. This is the quest of General Systems Theory. It does not seek, of course, to establish a...

J. J. van Deemter, F.J. Zuiderweg, A. Klinkenberg

A unified treatment is presented of thermoelasticity by application and further developments of the methods of irreversible thermodynamics. The concept of generalized free energy introduced in a previous publication plays the role of a ``thermoelastic...

The mean-velocity profile in the turbulentboundary layer is representedby a linear combination of two universalfunctions. One is the well-establishedlaw of the wall. The other, calledthe law of the wake, is interpreted interms of the large-scale structure...

Spectra of heavy water have been obtained under high resolution between 1.25—4.1μ (2400—8000 cm—1). Approximately 4500 lines have been measured, and the majority of them analyzed into ten bands of D2O and nine bands of HDO. The analysis is described...

The earlier experiments with potassium ferrioxalate have been extended and a detailed study has been made of the photolysis of the acidified solutions previously recommended for chemical actinometry (Parker 1953). Accurate values of quantum efficiency...

A. Dubois, Stella Y. Botelho, H Julius Comroe

Arthur B. DuBois, Stella Y. Botelho, George N. Bedell, Robert J. Marshall, H Julius Comroe

Mathematical methods are presented for calculating rate constants of processes which narrow nuclear magnetic resonance absorption lines having discrete components. High resolution proton spectra show that the R1CO‐NR2R3 skeletons of N,N‐dimethylformamide...

Nicholas V. Carroll, Robert W. Longley, Joseph H. Roe

Full textFull text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (2.7M), or click on a page image below to browse page by page. 379380381382383384385386387388389390391392393

The chapter presents a discussion on the continuum theory of lattice defects. The continuum analog of a crystal containing imperfections is an elastic body in a state of stress not produced by surface and body forces. The appropriate tool for handling...

1. The prehensile movements of the hand as a whole are analysed from both an anatomical anda functional viewpoint.2. It is shown that movements of the hand consist of two basic patterns of movements which are termed precision grip and power grip.3. In...

The zero error capacity C_o of a noisy channel is defined as the least upper bound of rates at which it is possible to transmit information with zero probability of error. Various properties of C_o are studied; upper and lower bounds and methods of evaluation...

A previously given theory of the electronic spectra and structure of complex unsaturated molecules is further elucidated by listing specific formulas for the charge density, bond order, transition moment, and configuration interaction matrix elements....

The type of pustule developed on a host variety following inoculation with a race of rust is the criterion both of the reaction of that variety to the race and of the pathogenicity of that race to the variety. Races of rust—genes for pathogenicity—are...

To analyze the development of erosional topography the writer studied geomorphic processes and landforms in a small badlands area at Perth Amboy, New Jersey. The badlands developed on a clay-sand fill and were morphologically similar to badlands and areas...

Noboru Mataga, Yozo Kaifu, Masao Koizumi

SUMMARY: A theoretical treatment of continuous culture is given, which allows quantitative prediction of the steady-state concentrations of bacteria and substrate in the culture, and how these may be expected to vary with change of medium, concentration...

J. Chauveau, Moulé Y, Ch. Rouiller

In differential thermal analysis, the temperature at which the maximum deflection is observed varies with heating rate for certain types of reactions. An expression can be derived relating this variation with the kinetics of the reaction. By making a...

Benjamin Lee Whorf, John D. Carroll

This chapter discusses the simple case of the turbulent boundary layer in a constant pressure field and considers the complex problem of the effects of pressure gradients, and variable wall roughness. The concepts of boundary layer phenomena, in general,...

If the input symbols to a communication channel represent the outcomes of a chance event on which bets are available at odds consistent with their probabilities (i.e., “fair” odds), a gambler can use the knowledge given him by the received symbols...

THE purpose of this communication is to report 3 cases of an acute neurologic illness characterized among other features by total external ophthalmoplegia, severe ataxia and loss of the tendon reflexes. The clinical picture in all 3 cases was so similar...

Part I. The results of previous experiments (Bagnold 1954) on the stresses set up in a uniform gravity-free dispersion of solid grains when uniformly sheared in a fluid are applied to the non-uniform case of grain flow over a gravity bed, assuming the...

I. Introduction: widespread use of community indifference curves, 1. — II. Attempts to justify the use of community indifference curves, 3. — III. Proof of the nonexistence of community indifference contours, 4. — IV. Nature of Scitovsky's community...

Various processes such as electron transferreactions,redox reactions at electrodes, and electronic excitation of dissolved ions may proceed by way of intermediate states whose electrical polarization is not in equilibrium with the field arising from the...

This paper is in continuation of previous investigations (Gutenberg and Richter, Paper I, 1942; Paper I I , 1956). The earthquake magnitude has statistical and other uses independent of the relation between magnitude and energy. Indeed, it is possible...

The theory of the photovoltaiceffect is used to predict the characteristics of a semiconductor which would operate with an optimum efficiency as a photovoltaicsolar energy converter. The existence of such an optimum material results from the interaction...

R. Steele, Joseph S. Wall, R. C. De Bodo, Norman Altszuler, S. P. Kiang, C. Bjerknes

From the assumption that the microscopic behavior of the liquid in an unsaturated porous medium is controlled by the physical laws of surface tension and viscousflow,differential equations governing the macroscopic flow in such a medium are deduced. No...

Samuel Clarke, Leibniz, Gottfried Wilhelm, Freiherr von, H. G. Alexander

It is shown that an electron spin polarization associated with an odd electron in a π‐molecular orbital in an aromatic free radical can, through an atomic exchange coupling mechanism, produce an appreciable resultant electron spin polarization in s‐atomic...

Jim Douglas, H.H. Rachford

An arrangement of three non-coaxial helical chains linked to one another by hydrogen bonds approximately perpendicular to the length of the chains was suggested as the basis of the structure of collagen two years ago. This structure explained the occurrence...

In a continuation of a previous paper, it is shown here how the gross bulk and shear moduli of a composite material consisting of a suspension of grains or a compact of grains may be deduced. The grains are assumed to be perfectly bonded to the suspending...

N. E. Morton, James F. Crow, H. J. Muller

It is suggested that much of the subject matter now lumped under the heading of "circuit theory" might better be called "system theory," which in turn may be separated into three subdivisions-that which deals with the representation of the physical elements;...

Solomon A. Berson, Rosalyn S. Yalow, Arthur Bauman, Marcus A. Rothschild, Katharina Newerly

Let us consider a sequence of processes $\xi _n (t)$ such that the multivariate distribution of $\xi _n (t_1 ),\xi _n (t_2 ), \cdots ,\xi _n (t_k )$ tends to the multivariate distribution of $\xi _0 (t_1 ),\xi _0 (t_2 ), \cdots ,\xi _0 (t_k )$ for all...

In this monograph I have attempted to set out, in as elementary a form as possible, the basic mathematics of the theories of elasticity, plasticity, viscosity, and rheology, together with a discussion of the properties of the materials involved and the...

This paper studies the statistical distribution of the maximum values of a random function which is the sum of an infinite number of sine waves in random phase. The results are applied to sea waves and to the pitching and rolling motion of a ship.

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