Richard M. Cyert, James G. March

F. C. Greenwood, W. M. Hunter, J. S. Glover

Finite systems of deterministic ordinary-nonlinear differential equations ~ay ?e desi~ed t? repr.ese~t forced dissipative hydrodynamic flow. Solutions o~ the~e .equations can be Id.en~lfied ~th traJecto;les.m phase space. For those systems with bounded...

The Index of ADL was developed to study results of treatment and prognosis in the elderly and chronically ill. Grades of the Index summarize over-all performance in bathing, dressing, going to toilet, transferring, continence, and feeding. More than 2,000...

An extended period numerical integration of a baroclinic primitive equation model has been made for the simulation and the study of the dynamics of the atmosphere's general circulation. The solution corresponding to external gravitational propagation...

The effects of the ionic strength and pH of the hemolyzing solution on the hemoglobin content of human erythrocyte ghosts were studied in phosphate buffers and found to have a pronounced influence upon hemoglobin binding in the ghosts. Buffer concentrations...

The Huckel theory, with an extended basis set consisting of 2s and 2pcarbon and 1s hydrogen orbitals, with inclusion of overlap and all interactions, yields a good qualitative solution of most hydrocarbon conformational problems. Calculations have been...

H. van Den Dool, P. Dec. Kratz

P. J. Randle, P. B. Garland, C. N. Hales, E. A. Newsholme

David D. Sabatini, Klaus G. Bensch, Russell J. Barrnett

Theoretically expected rates of release of solid drugs incorporated into solid matrices have been derived for several model systems. Mathematical relations have been obtained for cases (a) where the drug particles are dispersed in a homogeneous, uniform...

Joachim F. R. König, Renate A. Klippel

Gabriel A. Almond, Sidney Verba

Knowledge of ore grades and ore reserves as well as error estimation of these values, is fundamental for mining engineers and mining geologists. Until now no appropriate scientific approach to those estimation problems has existed: geostatistics, the...

Laboratory investigations show that rates of adsorption of persistent organic compounds on granular carbon are quite low. Intraparticle diffusion of solute appears to control the rate of uptake, thus the rate is partially a function of the pore size distribution...

A technique has been developed in which bromine pentafluoride is used as a reagent for quantitative liberation of oxygen from oxides and silicates. For all of the rocks and minerals analysed, the oxygen yields are 100 ± 2 per cent of the theoretical...

This paper describes the advantages of using a particular model of the relationships among securities for practical applications of the Markowitz portfolio analysis technique. A computer program has been developed to take full advantage of the model:...

This paper is concerned with various aspects of the characterization of randomly time-variant linear channels. At the outset it is demonstrated that time-varying linear channels (or filters) may be characterized in an interesting symmetrical manner in...

The title problem concerns two isotropic phases firmly bonded together to form a mixture with any concentrations. An elementary account of several theoretical methods of attack is given, among them the derivation of inequalities between various moduli....

A formula is derived for the electric tunnel effect through a potential barrier of arbitrary shape existing in a thin insulating film. The formula is applied to a rectangular barrier with and without image forces. In the image force problem, the true...

A published method for analyzing multiple 2×2 contingency tables arising in retrospective studies of disease is extended in application and form. Extensions of application include comparisons of age-adjusted death rates, life-table analyses, comparisons...

This paper gives an account of an experiment in the use of the so-called DELPHI method, which was devised in order to obtain the most reliable opinion consensus of a group of experts by subjecting them to a series of questionnaires in depth interspersed...

SINGLE-CELL RESPONSES IN STRIATE CORTEX OF KITTENS DEPRIVED OF VISION IN ONE EYE

Energy Storage and the Balance of Producers and Decomposers in Ecological Systems

J. W. Gerdemann, T. H. Nicolson

Carl Robert Morgan, Arnold Lazarow

With the subject exposed to an alternating magnetic field, eye position may be accurately recorded from the voltage generated in a coil of wire embedded in a scleral contact lens worn by the subject. Using two magnetic fields in quadrature phase and two...

The self‐consistent‐field function for atoms with 2 to 36 electrons are computed with a minimal basis set of Slater‐type orbitals. The orbital exponent of the atomic orbitals are optimized as to ensure the energy minimum. The analysis of the optimized...

The Sketchpad system makes it possible for a man and a computer to converse rapidly through the medium of line drawings. Heretofore, most interaction between man and computers has been slowed down by the need to reduce all communication to written statements...

Several procedures employing chloroform and phenol for extraction and deproteinization have been explored for the preparation of highly purified transforming DNA from Bacillus subtilis. The recovery, purity, transforming activity and the sedimentation...

A formalism has been developed, using Feynman’s space-time formulation of nonrelativistic quantum mechanics whereby the behavior of a system of interest, which is coupled to other external quantum systems, may be calculated in terms of its own variables...

The individual spins of the Ising model are assumed to interact with an external agency (e.g., a heat reservoir) which causes them to change their states randomly with time. Coupling between the spins is introduced through the assumption that the transition...

Elliott H. Lieb, Werner Liniger

The response to the second antigen of a sequence of two related antigens appears to consist of two qualitatively different antibody populations. Antibodies specific for the second antigen are of primary-response quality while the antibodies which cross-react...

The biological activity of many proteins is controlled by specific metabolites which do not interact directly with the substrates or products of the reactions. The effect of these regulatory agents appears to result exclusively from a con formational...

The stability of a plane current layer is analyzed in the hydromagnetic approximation, allowing for finite isotropic resistivity. The effect of a small layer curvature is simulated by a gravitational field. In an incompressible fluid, there can be three...

The kinetics of enzyme-catalyzed reactions with two or more substrates or products: I. Nomenclature and rate equations

The stability of the shape of a spherical particle undergoing diffusion‐controlled growth into an initially uniformly supersaturated matrix is studied by supposing an expansion, into spherical harmonics, of an infinitesimal deviation of the particle...

Josef Brožek, F. Grande, J. T. Anderson, Ancel Keys

Viktor Emil Frankl, Ilse Lasch, Gordon W. (Gordon Willard) Allport

The concentration of chlorophyll, principally chlorophyll a, and after acidification phaeophytin, is measured in 8590 acetone extracts using a sensitive fluorometer. The method is very sensitive in that 10 fluorescence units are equal to **0**.001...

Imanuel. Bergman, Roy Loxley

This chapter discusses semantical analysis of modal logic ii and non-normal modal propositional calculi. The proof of sufficiency, which is omitted by many, proceeds by constructing a normal characteristic matrix by Lindenbaum's method. The tableaux that...

for arbitrary operators in terms of products of the coherent state vectors. These expansions are discussed as a general method of representing the density operator for the field. A particular form is exhibited for the density operator which makes it possible...

This paper describes elements in the social behaviour of the laboratory rat, mouse, hamster and Guinea-pig. These elements are divided into postures, which are static, and acts, which involve movement. A total of 45 of these elements are mentioned, most...

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering, 1963.

This paper has two purposes: 1) to clarify the relationship between the quantum theory of radiation, where the electromagnetic field-expansion coefficients satisfy commutation relations, and the semiclassical theory, where the electromagnetic field is...

The Reuss-Voigt approximations are well known methods whereby the isotropic polycrystalline elastic constants can be calculated from the single crystal elastic constants. It is shown here that the Reuss and the Voigt approximations can be used to estimate,...

A nuclear magnetic double‐resonance method for the determination of chemical exchange rates has been developed. The method is applicable to systems in which a nuclear spin is reversibly transferred between two nonequivalent sites, A and B. The lifetime...

Joseph A. Schumpeter, B. Miranda Abaunza, Claire Selltiz, Marie Jahoda, Martin Deutsch, Stuart W. Cook, M.A. Granadino Urbina, G. Mansilla Lazarte, M. Casares Torres, J. Cevallos Murillo, Fano Rodríguez, H. Ramakrishna, B., B.H. Contreras Marín, O.E. Romero, C. Dunkerley, B. Glaeser, P.O. Girot, A. Tibaijuka, Shyamacharan Mukherji, M.A.S. da Fonseca, M. Matsunaga, F. de A. Ferreira, Abril Barros, M.A.S. Fonseca, Milton Santos, Hanumantha Rao, J.R. Navarro

Electron spin resonance methods have been used to observe alkyl radicals in liquid hydrocarbon systems during irradiation with 2.8‐MeV electrons. These investigations provide detailed structural, radiation chemical, and kinetic information about a large...

The infrared spectrum of the 1400 to 1700 cm -1 region has been determined for pyridine adsorbed on acedic solids. The spectrum of pyridine coordinately bonded to the surface is markedly different from that of the pyridinium ion. This permits the differentiation...

EFFECTS OF VISUAL DEPRIVATION ON MORPHOLOGY AND PHYSIOLOGY OF CELLS IN THE CAT'S LATERAL GENICULATE BODY

Extensive normal co-ordinate calculations on the extended n-paraffins C2H6 through n-C14H30 and polyethylene have been carried out using a perturbation method programmed for the IBM 7090 which adjusts force constants for any number of molecules simultaneously....

RECEPTIVE FIELDS OF CELLS IN STRIATE CORTEX OF VERY YOUNG, VISUALLY INEXPERIENCED KITTENS.

A method is given of finding a real function in a finite region of a plane given its line integrals along all straight lines intersecting the region. The solution found is applicable to three problems of interest for precise radiology and radiotherapy:...

A. J. Becker, McCulloch Ea, Till Je

J. W. Backus, Friedrich L. Bauer, J. Green, C. Katz, John McCarthy, Alan J. Perlis, Heinz Rutishauser, Klaus Samelson, B. Vauquois, J. H. Wegstein, A. van Wijngaarden, Michael Woodger, Peter Naur

Simple and exact expressions have been found for the compressibility and pressure equations of state predicted by the Percus—Yevick equation for hard spheres. The equations of state are in good agreement with the machine calculations of Wainwright and...

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