Differentiation of ballpoint pen inks by thermodesorption and gas chromatography-mass spectrometry

Differentiation and classification of ink entries with dated samples of a reference collection are important aspects in the examination of questioned documents. Classification of writing inks is presently achieved by analysis of dyes and colorants contained in the ink. This technique has its limitations in newly developed ink formulations with identical dye composition but differing in their solvents and binder resins. This paper introduces a method for the determination of solvents and binder resins of an ink sample directly from paper without sample preparation. This aim is accomplished by thermodesorption of the sample followed by gas chromatography/mass spectroscopy. The method was tested on numerous samples of ballpoint pen inks, which were subsequently grouped into several solvent and resin subgroups. A case study shows the applicability of the newly developed method.     

Imperatives Without Imperator

Schmitt’s theologisation of sovereignty has been subjected, 50 years later, to a ‘quarter turn’ by Foucault’s move from issues of domination to issues of government. After a further 30 years, radicalising Foucault, Agamben’s archaeology of economy adds another ‘quarter turn’: the structure that emerges once the old European conjugality of facticity and validity, of praxis and being, emptied of all bonds, links, and loops, gives way to the bare opposition ‘bipolarity’. The new constellation provides the old legal-theoretical (kelsenian) problem of rules unsuspended from a ruler who would authorise them, with a new, unexpected, political content and with a change of epistemic paradigm.     

制定一部德意志统一民法典之必要性

在不久前发表的一篇评论文章(<海德堡年鉴>1814年卷,第1-32页)中,本人曾就制定德意志统一民法典之必要性附带发表了一些拙见.这让一些值得尊敬的人士敦促我专文对这一重要问题予以更细致的阐述.     

Neo‐patrimonialism and Corruption: Evidence from 8,436 Firms in 17 Countries in Sub‐Saharan Africa

This article introduces four innovations to the literature on administrative corruption. First, it employs a neo‐patrimonialism framework by addressing measurement, identification, and endogeneity issues that beset the literature. Second, unlike cross‐country studies, it uses firms as the unit of analysis. Third, unlike the conventional literature, the article uses large‐n (n = 8,436) panel survey data of key informants in 17 countries in sub‐Saharan Africa. Finally, unlike the conventional literature, the article focuses on a particular type of corruption: the supply and demand for bribery. The authors find that the uncertainty associated with neo‐patrimonialism has a strong, positive, and significant effect on the propensity of civil servants to demand bribes in exchange for services and for firms to supply bribes in exchange for winning government contracts. The results are robust to controls on the characteristics of firms and their regulatory environments. The article concludes with implications for research and practice.