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This study examines a computational framework for segregation of duties (SoD) in the design as well as implementation of accounting systems. The framework consists of a model of workflows in accounting systems based on workflow graphs, a partial order model of roles performed by the actors in the accounting system, and a specification of SoD rules. We develop a set of algorithms for four SoD rules that can be used in the enforcement of SoD. For the SoD rule that precludes task type conflicts, our results show that while compliance verification can be carried out efficiently, finding an SoD compliant assignment of tasks is computationally intractable. For those situations, we present an integer linear programming (ILP) formulation for finding compliant assignments using public domain ILP solvers. For the remaining three SoD rules, we demonstrate efficient ways of testing compliance for a given assignment as well as finding compliant assignments. 相似文献
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In the presence of foreign-owned factors of production in the economy, the effect of trade policy changes on national welfare needs to take into account the possible redistributive effect between foreign-owned and domestic factors. Therefore, an otherwise welfare-improving trade liberalization may paradoxically worsen national welfare. This paper analyzes this important, new area of trade theory and establishes the condition under which this paradox of immiserizing trade liberalization arises. The analysis is also applicable to analyzing the effects of external tariff variation in customs unions, with full internal factor mobility, on member countries' welfare. 相似文献
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Jagdish N. Sheth Nirmal K. Sethia Shanthi Srinivas 《Journal of the Academy of Marketing Science》2011,39(1):21-39
How effectively business deals with the challenges of sustainability will define its success for decades to come. Current
sustainability strategies have three major deficiencies: they do not directly focus on the customer, they do not recognize
the looming threats from rising global over-consumption, and they do not take a holistic approach. We present a framework
for a customer-centric approach to sustainability. This approach recasts the sustainability metric to emphasize the outcomes
of business actions measured holistically in term of environmental, personal and economic well-being of the consumer. We introduce
the concept of mindful consumption (MC) as the guiding principle in this approach. MC is premised on a consumer mindset of
caring for self, for community, and for nature, that translates behaviorally into tempering the self-defeating excesses associated
with acquisitive, repetitive and aspirational consumption. We also make the business case for fostering mindful consumption,
and illustrate how the marketing function can be harnessed to successfully implement the customer-centric approach to sustainability. 相似文献
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In this paper we examine currency substitution in Canadian money demand ls-a-vis the currencies of seven industrialized countries. A multicurrency variant of the money demand function is estimated to test for the presence and extent of this substitution. The results (except for the British pound) conform to expectations and show complementarity between currencies. It is also found that the degree of currency substitution under flexible rates exceeds that under fixed rates. We also question the validity of the tests for the presence of currency substitution which do not distinguish between exchange rate regimes. [430] 相似文献
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