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Development of a DTPA Soil Test for Zinc, Iron, Manganese, and Copper
Abstract A DTPA soil test was developed to identify near‐neutral and calcareous soils with insufficient available Zn, Fe, Mn, or Cu for maximum yields of crops. The extractant c...
Social Structure and Competition in Interfirm Networks: The Paradox of Embeddedness
This chapter aims to develop one of perhaps multiple specifications of embeddedness, a concept that has been used to refer broadly to the contingent nature of economic action wi...
Orienting of Attention
Bartlett viewed thinking as a high level skill exhibiting ballistic properties that he called its “point of no return”. This paper explores one aspect of cognition through the u...
Power analysis and determination of sample size for covariance structure modeling.
A framework for hypothesis testing and power analysis in the assessment of fit of covariance structure models is presented. We emphasize the value of confidence intervals for fi...
Machine learning: a probabilistic perspective
Today's Web-enabled deluge of electronic data calls for automated methods of data analysis. Machine learning provides these, developing methods that can automatically detect pat...
Interrater reliability: the kappa statistic.
The kappa statistic is frequently used to test interrater reliability. The importance of rater reliability lies in the fact that it represents the extent to which the data colle...
Organizational Information Requirements, Media Richness and Structural Design
This paper answers the question, “Why do organizations process information?” Uncertainty and equivocality are defined as two forces that influence information processing in orga...
A Stochastic Approximation Method
Let $M(x)$ denote the expected value at level $x$ of the response to a certain experiment. $M(x)$ is assumed to be a monotone function of $x$ but is unknown to the experimenter,...
The Psychophysics Toolbox.
The Psychophysics Toolbox is a software package that supports visual psychophysics. Its routines provide an interface between a high-level interpreted language (MATLAB on the Ma...
The Content Analysis Guidebook
List of Boxes List of Tables and Figures Foreword Acknowledgments 1. Defining Content Analysis Is Content Analysis Easy? Is It Something That Anyone Can Do? A Six-Part Definitio...
Communication Theory of Secrecy Systems*
THE problems of cryptography and secrecy systems furnish an interesting application of communication theory. <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="htt...