Joseph A. Schumpeter
Joseph A. Schumpeter
A Theory of Human Motivation
This article reported Luria and Delbruck's breakthrough study in which they established that viruses do not induce mutations in bacteria, but that virus-resisting mutations are spontaneous. Their "fluctuation test" theory demonstrated that bacteria...
C. S. Piper
The interaction of solvents with cross‐linked network structures, such as occur in vulcanized rubber, is subjected to a statistical mechanical treatment based on the model and procedure presented in the preceding paper. The activity of the solvent is...
The most probable distributions of molecular sizes are calculated for certain types of branched‐chain polymers. The results represent an extension of the previous work of Flory, who showed that very large polymeric molecules appear suddenly at a critical...
A model is proposed for the structure of a cross‐linked network, such as exists in a vulcanized rubber, which is amenable to statistical treatment. Expressions are derived for the structural entropy of the network, and for the entropy change on deformation....
A simple formula is suggested for describing the stress-strain curve in terms of three parameters; namely, Young's modulus and two secant yield strengths. Dimensionless charts are derived from this formula for determining the stress-strain curve, the...
Previous discussions of the kinetic theory of rubberelasticity have dealt with individual long chain molecules, but the theory of the structure of bulk rubber has been almost entirely undeveloped. The present paper goes beyond earlier ones both in the...
H. Davson, J. F. Danielli
P. N. Rosenstein-Rodan
Easter Ellen Cupp
Henry B. Mann, Abraham Wald
A table of energy level patterns for rigid asymmetric rotors is given, by means of which this approximation to the rotational energies of all molecules up to J = 10 may be readily evaluated. The symmetry classification of each level is determined and...
Individual goods and social goods compared, 27. — Quantitative measurement of social goods, 28. — Ideal output of social goods, 30. — Individual voting on outputs, 32. — Individual voting on increments to existing outputs, 40. — Alternatives...
Raymond B. Cattell
A molecular model in terms of which the elasticviscousproperties of rubber‐like substances can be interpreted is presented. Experiments on stress relaxation at constant extension, creep under constant load, extrusion, vibration, and breaking are discussed...
C. D. Haagensen, Arthur Purdy Stout
N. E. Edlefsen, Alfred B. C. Anderson
William James Durant
Gibson T, P. B. Medawar
Wilton R. Earle, Edward L. Schilling, Thomas H. Stark, Nancy P. Straus, Mary F. Brown, Emma Shelton
A. C. Chibnall, M. W. Rees, E. F. Williams
A. A. Harper, H. S. Raper
The ego in contemporary psychology.
P. F. Hahn, William F. Bale, J. F. Ross, W. M. Balfour, G. H. Whipple
Leslie A. White
Francis C. Wood, Charles C. Wolferth, George D. Geckeler
In this paper it is shown that a star must experience dynamical friction, i.e., it must suffer from a systematic tendency to be decelerated in the direction of its motion. 'This dynamical friction which stars experience is one of the direct consequences...
P. Eggleton, S. R. Elsden, Nancy Gough
Jacob Levine, G. Murphy
E. M. H. Lloyd
H. T. Dean
A diffusion method of investigating surface recombination of atoms by substances of low catalytic power is presented. By this method we have evaluated the coefficient of recombination γ for H and OH on Pyrex for a temperature range of over 500°C. For...
The theory of dielectric polarization of polar liquids is used to calculate the dielectric constants of water and some alcohols. Quasi‐rigid coordination models, based upon x‐ray structural investigations, are employed in the calculation of a function...
Raymond C. Moore, L. R. Laudon
George B. Wislocki, H. Stanley Bennett
C. E. Hall, E. M. Rowley
J. C. C. McKinsey
The clinical application of electroencephalography is complicated by the wide range of individual patterns encountered in the most carefully selected control groups and by the fact that almost all patterns which might be used for diagnosis can be found...
Studies of the surface damage caused by the sliding of clean metals on one another show that penetration and distortion occur to some depth beneath the surface. Micro‐examination shows that welding of the metals takes place quite readily even at low...
W. Trevor Cooke, Paul D. White
Measurements of the thixotropic breakdown of structure with time of agitation were performed at different rates of shear on a number of pigment suspensions and on various oils in a rotational viscometer. The product of rate of breakdown in thixotropic...
Philip H. Seefeld, Arnold J. Bargen
SummaryThis report is based on 1,339 birthday examinations of 200 Brush Foundation Regular Series girls from 7 to 17 years of age. The data used are menarcheal age; measurements of standing height and weight; skeletal age assessments made according to...
Frederick W. Stuewer
Carl O. Mohr
Rudolf R. Schäfer, Gardner Murphy
Joseph K. Folsom, Robert R. Sears
John A. Hawgood, Irvin L. Child
Bessie R. Callow
Charles B. Woodbury
A. G. Lochhead, F. E. Chase
Lothar B. Kalinowsky, Foster Kennedy
F. W. Fabian, Herbert Blum
J. H. Dible, John McMichael, Sheila Sherlock
John J. Sampson, Edmond C. Alberton, B. Kondo
F. M. Burket, Diana R. Bull
W. S. Ferguson, A. H. Lewis, S. J. Watson
L. G. Goodwin, J. E. Page
Karl Paul Link, Ralph S. Overman, William R. Sullivan, Charles F. Huebner, Lester D. Scheel
Carl B. Allendoerfer, André Weil
R. S. Phillips
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Hermann Becks, W.W. Wainwright
G. Carl Huber, Elizabeth Caroline Crosby
O. C. Magistad, A. D. Ayers, C. H. Wadleigh, Hugh G. Gauch
J. E. Weaver, F. W. Albertson
1. 1. Brief notes are given on 57 adults, with post-mortem examinations, who had simple, typical patency of the ductus arteriosus. A few data are presented on 10 adults with atyical patency of the ductus arteriosus.2. 2. Case reports are presented on...
A method employed recording in an anatomical order pelvic tissue damage due to parturition is presented with a preliminary report of figures showing damage to the various planes and regions. Hazards in accurately observing damage are recognized, particularly...
Analytic and Meromorphic Continuation by Means of Green's Formula
The several graphic devices available for use with studies of chemical weathering are analytically reviewed. The specific advantages and disadvantages of each are noted. A modification of existing methods, combining a number of their more desirable aspects,...
M. Macheboeuf, J. L. Delsal
F. C. Bartlett
Bernard J. Bamberger, Gershom Gerhard Scholem
A CRITIQUE OF INTRAVENOUS ANESTHESIA IN WAR SURGERY
John P. Peters, Evelyn B. Man
Bernard B. Brodie, Sidney Udenfriend
Lawrence Atkin, Alfred S. Schultz, William L. Williams, C. N. Fbey
Oliver H. Straus, Avram Goldstein
Paul S. Barker, Frank N. Wilson, Franklin D. Johnston
George E. Hudson
THIS paper describes a new method of calculating transmission losses within power systems. Reasonable accuracy is obtained with longhand calculation, although the same general scheme with the load-flow determinations carried out on a d-c calculating board...
Elizabeth Caroline Crosby, Russell T. Woodburne
SummaryThe difficulties encountered in dairy cow experiments when using the usual method of periodically adjusting feed intake to production have been discussed. It has been pointed out that the method introduces a bias into ration comparisons, and that...
David L. Fingerman, Frank C. Andrus
Louis Guttman, Jozef Cohen
Carl G. Hempel
INGESTION OF FLUORIDE AND DENTAL CARIES: QUANTITATIVE RELATIONS BASED ON FOOD AND WATER REQUIREMENTS OF CHILDREN ONE TO TWELVE YEARS OLD
Lester R. Dragstedt