JPEG steganography detection with Benford's Law

In this paper we present a novel approach to the problem of steganography detection in JPEG images by applying a statistical attack. The method is based on the empirical Benford's Law and, more specifically, on its generalized form. We prove and extend the validity of the logarithmic rule in colour images and introduce a blind steganographic method which can flag a file as a suspicious stego-carrier. The proposed method achieves very high accuracy and speed and is based on the distributions of the first digits of the quantized Discrete Cosine Transform coefficients present in JPEGs. In order to validate and evaluate our algorithm, we developed steganographic tools which are able to analyse image files and we subsequently applied them on the popular Uncompressed Colour Image Database. Furthermore, we demonstrate that not only can our method detect steganography but, if certain criteria are met, it can also reveal which steganographic algorithm was used to embed data in a JPEG file.     

“David Byrne really does love PowerPoint”: art as research on semiotics and semiotic technology

This article presents a reading of David Byrne's Envisioning Emotional Epistemological Information, an art work created with MicroSoft's presentation software PowerPoint, as an instance of creative research on semiotics and semiotic technology. It reveals commonalities and differences between Byrne's ideas about PowerPoint and related ideas from linguistics and semiotics, and is intended as a contribution to research on PowerPoint, and on semiotic technologies generally, as well as to efforts aimed at developing criteria for evaluating art as research on semiotics.     

The Genesis of the Austrian Model of Constitutional Review of Legislation

Abstract The European model of the constitutional review of legislation, characterized by the concentration of the constitutional review power in a single constitutional court, had its origin in the Austrian Federal Constitution of 1920. This is all the more remarkable when one considers that this Constitution established at the same time a parliamentary system of government in a fairly radical form. As the author explains, this “invention” of a constitutional court is attributable to two factors. One factor is the federal aspect. The Court was conceived by the framers of the Austrian Federal Constitution of 1920 as an umpire between federal legislation and the legislation of the states or Länder. In this respect it was meant as a substitute for the principle of the priority of federal law over state or Land law. This is manifest in the initial draft of the Constitution, where actions on questions of the constitutionality of legislation could only be brought by the Federal government (against the legislation of one or another of the states or Länder) and by the State or Land governments (against federal legislation). Right from the beginning, however, the Court could examine a parliamentary act ex officio when it had to apply such an act in another proceeding. It was this power of the Court that triggered the development of constitutional review. Its exercise gradually transformed the Court into a guardian of the Constitution as a whole, in particular, the fundamental rights of citizens. The author traces this development in the context of the concept of state and law that prevailed in the late nineteenth and early twentieth century. This concept included specific restrictions on constitutional review. On the basis of a different understanding of the functions of a constitution, the Court gave up these restrictions and followed the examples of the European Court of Human Rights, the German Constitutional Court and—indirectly—the American Supreme Court.     

Bureaucracy Versus Markets in Hospital Care: The Dutch Case

In this paper we analyze the bureaucratic negotiation processthat is implied by the budgeting system applied in Dutchhospital care. This system is based on centralized pricesetting while simultaneously allowing for decentralizednegotiations on volumes. We apply a variant of the bureaucracytheory, according to which the bureaucratic agency (in ourcase the joint hospitals) are not allowed to pricediscriminate, but will receive a flat price per unit ofoutput. We find that central price setting, where the insurercannot exploit its information on hospital costs, leads to asuboptimal supply of hospital care.     

Cross-ethnic generalizability of the three-factor model of psychopathy: the Youth Psychopathic Traits Inventory in an incarcerated sample of native Dutch and Moroccan immigrant boys

Background

Previous research provides support for the existence of the psychopathy construct in youths. However, studies regarding the psychometric properties of psychopathy measures with ethnic minority youths are lacking.

Methods

In the present study, the three-factor structure of the Youth Psychopathic Traits Inventory (YPI) was examined for both native Dutch youth (N = 158) and an ethnic minority group, Moroccans (N = 141), in an incarcerated adolescent population in the Netherlands.

Results

Our results showed that the three-factor structure of the YPI is comparable across an ethnic majority and an ethnic minority group in an incarcerated sample in the Netherlands. Moreover, associations between psychopathic traits and mental health problems were similar for both ethnic groups.

Conclusion

The results support the cross-ethnic generalizability of the three-factor model of psychopathy as measured through the Youth Psychopathic Traits Inventory.     

Victims and the restorative justice ambition: a London case study of potentials,assumptions and realities

Restorative justice is coming out of the shadows and in Europe this interest grows alongside a stronger victims’ movement with a domino effect on EU member states’ laws. In the UK, legislation now allows restorative justice at all stages of the criminal justice system, and as part of these developments, new restorative justice services that will be ‘victim-led’ are being funded. This paper questions this ‘kind’ of restorative justice, using unpublished findings from a research project that was conducted in 2017 in London. The project involved a survey with 66 victims and 44 offenders, followed by 11 in-depth victim interviews and a focus groups with 7 victims and practitioners. The data point out a number of assumptions and caveats, which must be addressed in order to ensure that further investment in restorative justice will yield benefits to all those whose lives are blighted by crime. The conclusions are relevant to anyone practising restorative justice internationally including policy makers and funders.     

Regulating farmworkers: The state and the agricultural labor supply in California

Conclusion The state in a society dominated by the capitalist mode of production is compelled to seek resolution of contradictions within the forms of social relationships compatible with the continuity of a dominant capitalist form and to insure capital accumulation. The resolution should also be able to submerge at least temporarily the inherent conflicts within that situation. Thus, the state may attempt to restrict the possible activities of a militant organization while at the same time helping maintain its existence. The ability of the state decisively to limit and restrict organizations like the United Farm Workers is not, however, guaranteed. The struggle for transitional reforms is thus crucial not only in consolidating gains but also in providing a basis for future actions. From all indications the United Farm Workers seem to recognize the situation. The future of the United Farm Workers as a militant, democratically organized, grassroots organization of agricultural workers capable of mobilizing widespread public support may be influenced more by their ability to stay free of constraining state regulation than by a struggle with a particular segment of agricultural growers. This suggests that if the UFW becomes established on a more permanent basis, its most significant struggles in the future may be with elements of the state which ironically are trying to guarantee its existence. It is this aspect of agricultural labor relations within California as well as the United States in general which may be the most significant during the next decade.