This paper proposes a framework based on Defeasible Logic (DL) to reason about normative modifications. We show how to express them in DL and how the logic deals with conflicts between temporalised normative modifications. Some comments will be given with regard to the phenomenon of retroactivity.

Health gap measures, such as the DALY, are a quantification of the gap between the current health status in a population and a stated goal for population health. This goal can be understood as an ideal situation in which everyone in a population lives into old age free of disease. Health gaps are the addition of time lost due to premature mortality, as measured against the normative survivorshi...

This paper empirically investigates the impact of normative social influence on group homogeneity in media preferences and group meeting outcomes in a setting where 58 student groups voluntarily used various communication media over a three-month software development project period. Group homogeneity in media preferences was argued to mediate the impact of normative social influence on group me...

Although asset policies and programs are seldom linked to wider theoretical debates in social welfare, this paper contends that an understanding of these debates contextualizes asset interventions and clarifies underlying values and ideological beliefs. Contrasting different normative perspectives in contemporary social welfare theory, the paper suggests that developmentalism offers a congenial...

As more and more companies provide their services over the Internet, the need to better understand and manage the normative context of composite services (including rights and responsibilities of all parties involved) becomes evident. Unfortunately the normative perspective of both individual and composite services seems to be left out from current e-service research and practice. Yet, this per...

global health research is essentially a normative undertaking: we use it to propose policies that ought to be implemented. to arrive at a normative conclusion in a logical way requires at least one normative premise, one that cannot be derived from empirical evidence alone. but there is no widely accepted normative premise for global health, and the actors with the power to set policies may use...

the present study aimed to investigate and identify factors affecting the intention to buy of islamic azad university students to foreign brands of clothing among the students of this university in tehran has been carried out. in which the impact of individual characteristics (unique needs and brand attitude) and normative characteristics of students (normative influence and brand awareness) on...