Estimation and Extrapolation of Tumor Probabilities from a Mouse Bioassay with Survival/Sacrifice Components

A nonparametric estimator of the probability distribution of time-to-tumor is incorporated into an algorithm for calculating linearly extrapolated dosage limits from an animal carcino-genesis bioassay. The procedure is illustrated with tumor data from a mouse bioassay with 2-acetylaminofluorene. Extrapolated dosage limits for an excess risk of 10^-6 differ by only a factor of 2 across the six replicates of the experiment.     

Power: A Conceptual Framework*

Symbolic interactionism lacks a coherent conception of power. This paper defines power in a manner consistent with the interactionist perspective. Power is conceptualized as a collective transaction characterized by a division of labor, movement toward a common end, and flexible coordination between opponents. Power is distinguished from other types of collective transactions by asymmetrical interaction, a conflict of interests between opponents, and the intentional production of compliance. Some implications of considering power as a collective transaction are then examined.     

EXAMINATION OF REGRESSION RESIDUALS

This article briefly reviews current literature on techniques for the examination of residuals in linear and nonlinear (including Time Series) models. Concentration is on graphical techniques and statistical test procedures (references involving a "routine" examination, computational aspects and discussion of model adequacy having not been included).     

Price vs. revenue stabilization through a buffer stock: Which is more financially feasible for LDCs?

Optimal control theory is used to analyze the implications of the adoption of price and LDC export revenue stabilization objectives by an international buffer stock for cocoa. The results obtained for the period 1956–76 suggest that the stabilization of either price or revenue at systematic trend would reduce the instability of both variables from that during the sample period. Although the stabilization of revenues at systematic trend decreases their average level, the stabilization of price has the opposite effect. Because of this, it may be financially feasible for the LDCs to provide the necessary resources for a price-stabilizing buffer stock.     

Assessing Intimacy: The Pair Inventory*

PAIR, acronym for Personal Assessment of Intimacy in Relationships, was developed as a tool for educators, researchers and therapists. PAIR provides systematic information on five types of intimacy: emotional, social, sexual, intellectual and recreational. Individuals, married or unmarried, describe their relationship in terms of how they currently perceive it (perceived) and how they would like it to be (expected). PAIR can be used with couples in marital therapy and enrichment groups.     

G.H. Mead's Contact Theory of Reality: The Manipulatory Phase of the Act in the Constitution of Mundane,Scientific, Aesthetic,and Evaluative Objects*

Mead's identification of ultimate reality with the experience of physical contact is rooted in his studies of animal perception. Many of his writings on the nature of science, aesthetic experience, and values can be viewed profitably as an attempt to generalize his theory of the act from an analysis of action toward mundane objects to include these other classes of perceptual objects.