Automated statistical methods for measuring the strength of block ciphers

A block cipher is one of the most common forms of algorithms used for data encryption. This paper describes an efficient set of statistical methods for analysing the security of these algorithms under the black-box approach. The procedures can be fully automated, which provides the designer or user of a block cipher with a useful set of tools for security analysis.     

北京市新材料产业发展状况调查与思考

新材料创新基地建设是北京市“二、四、八重大创新工程”的重要组成部分。其发展思路和布局对全国新材料产业整体的发展有很好的借鉴作用。通过对北京市新材料产业的情况调查 ,我们认为在新材料基地建设上应坚持“双高一大”原则 ,在政府宏观指导下以企业化的运作模式 ,走传统产业与高新技术产业结合的道路。     

Building Social Capability for Economic Catch-up: The Experience and Prospects of the Post-socialist Countries

The post-socialist countries are, by the standards of the EU, poor countries. The major developmental task facing these countries is, therefore, that of catching up with their more prosperous neighbours. The scope for catch-up is defined in terms of the levels of social capability exhibited by these societies and their capacity to establish technological congruence with the leading firms from the advanced industrial economies. S&T systems in the broadest sense are shown to be key factors in relation to both social capability and technological congruence. Detailed analysis of the transition countries indicates that the catch-up process is hampered across the board by specific gaps in social capability and elements of technological incongruence. These can in turn be traced to specific structural trends, in particular in relation to foreign investment, and to specific weaknesses of institutional development, cutting across the public/private dividing line, notably in relation to R&D systems and banking systems. Consideration of all these factors suggests that there can be no assumption that the transition countries will automatically catch up with western Europe, and that some disfavoured transition countries may, indeed, continue to fall behind.     

Convex rearrangements,generalized Lorenz curves,and correlated Gaussian data

We propose a statistical index for measuring the fluctuations of a stochastic process ξ$\xi$. This index is based on the generalized Lorenz curves and (modified) Gini indices of econometric theory.     

“How to wind the clock of the day?” Solo living phenomena and the various stabilities of home

The domestic home is usually theorized as negotiated and structured space-time and as an emotional attachment to people and places. However, the increasing number of people living on their own brings about the question of how home is experienced, embodied, and narrated by solo-living individuals, especially in terms of ordering and stability under the flexible and fluid nature of some other realms, such as paid work. Following the affordance approach in studies of home, our aim is to integrate research on practices, materialities, and narratives of domestic homes. Our main question concerns how home is perceived, experienced, and performed by childless solo-living people and how they understand the stability of their dwelling—one of the main characteristics of home in social theory. To broaden this “traditional” concept of home, we build upon the emphasis on stability with the notion of flow, as presented by Deleuze and Guattari, along with the concept of boundary work, to describe the processes of delineation between these two from the level of mundane “doings.” Through in-depth interviews conducted using the go-along technique, combined with walking through the dwellings and some of the neighborhoods, we explore the ambivalence of stability, permanence, and temporariness, and the interconnection between materialities and meanings. The appropriation of space and time enables solo-living people to dwell comfortably, while also materializing and stabilizing the sometimes unwanted state of singleness or living alone. In contrast, the unfinished nature of some homes indicates a provisional state of being, pointing out that the current situation is still not satisfactory, being more open to change; however, it might lead to permanent living in unpleasant or even un-homey homes.     

Two-dimensional Kolmogorov-type goodness-of-fit tests based on characterisations and their asymptotic efficiencies

In this paper, new two-dimensional goodness-of-fit tests are proposed. They are of supremum type and are based on two different types of characterisations. The first type are those that involve functional equations that the distribution function satisfies, while the second type uses independence of some statistics. The asymptotics of the statistics is studied and Bahadur efficiencies of the tests against some close alternatives are calculated. In the process, a theorem on large deviations of Kolmogorov-type statistics has been extended to the multidimensional case.     

The Quest for Government Accountability and Rule of Law: Conflicting Strategies of State and Civil Society in Cambodia and Serbia

This article deals with the social accountability activities of civil society organizations in Serbia and Cambodia. In both countries, they emerged with the conceptual and financial support of international development agencies; yet, the outputs were mediated by the social and political contexts. Still, these activities have some joint features: they (1) boost both understanding and awareness rather than solely mobilizing social interests; (2) target the interests of individual citizens rather than the interests of social-based groups or classes; (3) promote state cooperation instead of confrontation and (3) insist on the use of technical policy-related tools and mechanisms instead of political mobilization. The social accountability initiatives analyzed here have followed a policy-not-politics or depoliticized approach. As a consequence, they were ineffective in mobilizing citizens and social groups in a manner that would efficiently demand more accountability. On the other hand, governments contested civil society and appropriated its accountability discourses and strategies in an effort that can be read as an attempt to resist imposing government accountability and rule of law and pacifying present and future civic activism.