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Research on the diffusion of innovation has postulated three empirical regularities-the S-curve for diffusion in a temporal context, the neighborhood effect for diffusion in a spatial context, arid the hierarchy or short circuit effect for diffusion in the context of a central place system. This paper reviews the evidence for each regularity, considers the consistency of each, and presents an explanation for these regularities taken together that appears more useful for future research than previously posited explanations. Our paradigm focuses upon 1) the distinction between innovation diffusion agencies and adopters themselves, 2) the relationship between the marketing surface viewed by diffusion agencies and the resistance surface offered by potential adopters, and 3) the sequence of communication systems associated with different stages of the diffusion process. By focusing upon behavioral aspects of diffusion rather than upon rigidly defined structural aspects, the consistency of each regularity with others, and deviations from a given regularity for a particular situation, may be reconciled with theory. The empirical regularities are but one possible outcome of behavioral events associated with diffusion of innovation, and in future diffusion research more attention should be given to behavioral events and their characteristics. [ABSTRACT FROM AUTHOR]

This review of but a small amount of the empirical and theoretical research should suffice to indicate the areas of focus and concern in relating family and home environment with juvenile delinquency. It is evident that significance is attached to family cohesion, affection and adjustment both between the parents and between parent and child. Many authors (Udry, 1966; Blood and Wolfe, 1960) maintain that communication is a basle ingredient for a successful marriage. The open communication between spouses facilitates an understanding of expectations, interests, and frustrations. A marriage void of communication may lead to inhibited and ritualistic discussions, inner frustrations, and an absence of expectations and desires. If one accepts this position concerning communication between spouses, then there is reason to believe that based on the above-cited works, facilitation of the channels of communication within the family may influence the delinquency of the children. It appears plausible that a child who perceives the channels of communication within his family to be dosed may feel alienated from the family as a primary group. Without communication, the child may feel that the parents are not interested in his ideas and behavior, that the parents underestimate his desires and expectations, and that the parents reject him. Without communication the parents may not, indeed, be aware of the child's desires, values, and actions and may not succeed in transmitting their own values to the child. Although the parents would not condone delinquent behavior, as a result of their lack of communication with the child the parents may, by remaining silent, be sanctioning behavior of which the child feels the parents are aware. That is, if the child engages in delinquent behavior and feels that the parents are aware of that behavior, then he expects some negative sanctioning by his parents; due to the lack of communication, the parents may not be aware of the behavior, they do not sanction the child, and thereby reinforce his delinquent behavior. A lack of communication of this nature indicates a misunderstanding between parents and child concerning acceptable behavior and values. With the assumptions set forth above, it is of value to investigate the relationship between communication within the family and the delinquency of the child. It is the intention of this paper to ascertain: (1) the degree of communication that exists between the parents and the child concerning the child's participation in various forms of delinquent behavior; (2) the degree of communication that exists between the parents and the child concerning the punishment to be meted out for such behaviors; and (3) the effect of this communication on the child's participation in delinquent forms of behavior. [ABSTRACT FROM AUTHOR]

When the scheme of morphological subdivision propounded is applied to Western Europe, the Central Massif of France appears as a physiographic province with a unity of major relief type and structural evolution. The geographical regions within this province have two other important features in common: they have a similar history and the majority are characterized by a "mountainous centrality" with regard to the rest of France. It is the purpose of this paper to examine the emergence of the general patterns of road and rail communications in these regions.