We analyze the evolution and extent of income tax evasion under alternative governmental policies in an agent-based model with heterogeneous agents. A novel aspect of our modeling is the use of an exponential utility function, which allows us to assume rather realistic audit probabilities and to yield more realistic results with respect to the extent of tax evasion. Further, the introduction of...

The Scandinavian countries – Denmark, Norway, Sweden and Finland – have developed a particular model of welfare, employment and economic governance. It is based on universal access to taxfinanced social services and social insurance, full employment secured by expansive macro-economic policies and active labour market policies, highly organized labour markets, corporatist interest mediation, an...

The increasing interest in telecommunication systems and the wide spreading of computer networks within commercial and scientific field, are going in the direction of a deep integration of phone and data systems into a single network infrastructure. We are particular interested in security issues that arise in such context, thinking, for example, about authentication and billing problems. The a...

Combinations of C++ features, like inheritance, templates, and class nesting, allow for the expression of powerful component patterns. In particular, research has demonstrated that, using C++ mixin classes, one can express layered component-based designs concisely with efficient implementations. In this paper, we discuss pragmatic issues related to component-based programming using C++ mixins. ...

From a software design perspective, access control policies are requirements that must be addressed in a design. For example, access control policies are constraints that determine the type of access authorized users have on information resources. In this paper, we show how one can formulate access control policies as a policy model, formulate an access control aspect model that enforces polici...

A major key to success for case-based reasoning systems widely recognized are the definition of suitable case base maintenance policies. The aim of this paper is two fold: (1) to analyse global versus local case base maintenance policies and (2) to develop a unified technique between local and global policies. All the case base maintenance techniques studied in this paper share a common foundat...

The paper focuses on transaction context propagation in component-based software architectures, where every component is deployed into a container and client requests may be performed in the scope of a container-interposed transaction. In the existing commercial architectures such as EJB and COM+, the “single attribute approach” is used to specify the transaction context propagation. Being diff...

ZHENGQI PAN: Global Value Chains and Production Networks: State-Business Relations and Complexity in Economic Crises (Under the direction of Thomas Oatley) The proliferation of global value chains and production networks (GVCs/GPNs) has significantly altered the complexion and complexity of international trade. Much research fervor has been generated to examine the economic organization and spa...

In this chapter we consider the effects of exogenous energy shocks on an agentbased macroeconomic system and study the out-of-equilibrium dynamics. We introduce automatic stabilizers that allow the artificial economy to absorbe the shocks. Two types of macroeconomic stabilization policies are implemented: a consumer subsidy scheme that compensates households for their loss in purchasing power, ...

Role-based access control (RBAC) has been acknowledged as an effective mechanism for specifying and enforcing access control policies. However, it is not always clear how an RBAC policy can be systematically integrated into the system design so as to preserve the desired security requirements. In this paper we propose a representation and a process that supports systematic integration of an acc...