Giuseppe Castaldi, Vincenzo Galdi, Andrea Alù and Nader Engheta
The work is aimed at studying the electromagnetic interaction between a homogeneous, isotropic single-negative (SNG) slab and an inhomogeneous, anisotropic double-positive (DPS…
Abstract
Purpose
The work is aimed at studying the electromagnetic interaction between a homogeneous, isotropic single-negative (SNG) slab and an inhomogeneous, anisotropic double-positive (DPS) slab.
Design/methodology/approach
The approach is based on the transformation optics framework, which allows systematic design and modelling of anisotropic, inhomogeneous metamaterials with inherent field-manipulation capabilities.
Findings
The paper finds that a transformation-optics-based DPS slab can compensate the inherent opaqueness to the electromagnetic radiation of a SNG slab. Here, “compensation” means that the resulting bi-layer may give rise to zero-reflection for a normally-incident plane wave at a given frequency. Such phenomenon is inherently accompanied by (de)funneling effects for collimated-beam illumination, and it turns out to be quite robust to material losses as well as geometrical and constitutive-parameter truncation.
Originality/value
The results provide further evidence and insight in how SNG-like responses may be emulated (within narrow parametric ranges) by suitably-engineered spatial inhomogeneity and anisotropy in DPS media. Moreover, they also show that resonant transmission phenomena through SNG materials may be engineered via the powerful framework of transformation optics.
Details
Keywords
Tiziana Di Cimbrini, Warwick Funnell, Michele Bigoni, Stefania Migliori and Augusta Consorti
The purpose of this paper is to examine the role of accounting in the enactment of the Napoleonic imperial project in Tuscany and the Kingdom of Naples in the early nineteenth…
Abstract
Purpose
The purpose of this paper is to examine the role of accounting in the enactment of the Napoleonic imperial project in Tuscany and the Kingdom of Naples in the early nineteenth century.
Design/methodology/approach
The study adopts the Foucauldian theoretical framework of governmentality and a comparative approach to highlight similarities and differences between the two regions.
Findings
The presence of different cultural understandings and structures of power meant that in Tuscany accounting mirrored and reinforced the existing power structure, whereas in the Kingdom of Naples accounting practices were constitutive of power relations and acted as a compensatory mechanism. In the Kingdom of Naples, where local elites had been traditionally involved in ruling municipalities, control of accounting information and the use of resources “re-adjusted” the balance of power in favour of the French whilst letting local population believe that Napoleon was respectful of local customs.
Research limitations/implications
The ability of accounting technologies to act as compensatory mechanisms within governmentality systems paves the way to further investigations about the relationships between accounting and other governmentality technologies as well as the adjustment mechanisms leading to accounting resilience in different contexts.
Social implications
By identifying accounting as an adaptive instrument supporting less obvious practices of domination the study helps unmask a hidden mechanism underlying attempts to know, govern and control populations which still characterises modern forms of imperialism.
Originality/value
The comparative perspective leads to a new specification of the multifaceted roles that accounting plays in different cultural and political contexts in the achievement of the same set of imperial goals and enhances understanding of the translation of politics, rhetoric and power into a set of administrative tasks and calculative practices.